CN215924500U - Formaldehyde wastewater treatment parameter allocation system based on Fenton catalytic oxidation method - Google Patents
Formaldehyde wastewater treatment parameter allocation system based on Fenton catalytic oxidation method Download PDFInfo
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Abstract
The utility model belongs to the field of environmental protection, and particularly relates to a formaldehyde wastewater treatment parameter allocation system based on a Fenton catalytic oxidation method. The system provided by the utility model comprises: the system comprises a hydrogen peroxide solution medicament tank, a ferrous sulfate solution medicament tank, a formaldehyde waste water tank, a first temperature control liquid tank, a second temperature control liquid tank, a Fenton reactor, a temperature control device, a flow control device, a formaldehyde concentration online monitoring device and a pH value online monitoring device. In the utility model, by adjusting the parameter conditions during the operation of the system, the real-time influence of the parameter conditions such as hydrogen peroxide concentration, ferrous sulfate solution concentration, reaction pH value, reaction time, reaction temperature and the like on the formaldehyde removal efficiency in the dynamic reaction process of treating the formaldehyde wastewater by the Fenton catalytic oxidation method can be researched, so that the optimum parameter conditions for treating the formaldehyde wastewater by the Fenton catalytic oxidation method can be rapidly and accurately obtained, and technical guidance is provided for the practical engineering application of the Fenton catalytic oxidation technology.
Description
Technical Field
The utility model belongs to the field of environmental protection, and particularly relates to a formaldehyde wastewater treatment parameter allocation system based on a Fenton catalytic oxidation method.
Background
Formaldehyde is a colorless, strongly irritating odor gas, readily soluble in water, capable of coagulating proteins, highly toxic to humans and warm-blooded animals, affecting the immune function of humans, and has been identified by the world health organization as a carcinogenic and teratogenic substance. The formaldehyde wastewater often contains substances such as alcohol, benzene, phenols and the like, and can inhibit the growth and propagation of microorganisms when the concentration of formaldehyde is low, and can denature proteins and make the microorganisms difficult to survive when the concentration of formaldehyde is high, so that the formaldehyde wastewater is difficult to degrade by the microorganisms. At present, the treatment method of formaldehyde wastewater is mainly a chemical method, including a condensation method, a coagulation method, an oxidation method, a blow-off method, a lime method and the like, wherein the oxidation method includes Fenton (Fenton) reagent oxidation, chlorine dioxide oxidation, wet oxidation and the like. In the aspects of degradation rate and harmlessness, the Fenton catalytic oxidation method is an effective method for removing formaldehyde wastewater, in particular to high-concentration formaldehyde waste liquid.
The Fenton reagent is prepared from H2O2And Fe2+The formed strong oxidant mainly utilizes high-activity OH free radicals to oxidize and degrade organic matters in wastewater, and realizes complete degradation of the organic matters in a short time, but a reaction system of the Fenton reagent is very complicated, and the final decomposition product is H2O、O2And Fe3+A large amount of particles are continuously settled before and after the reaction, the transparency of the solution is not high, and H2O2Concentration, FeSO4The concentration, pH value, reaction time, reaction temperature and the like all influence the removal efficiency of the Fenton catalytic oxidation method.
The literatures Fenton oxidation method for deeply treating formaldehyde wastewater and Fenton oxidation-biological contact oxidation process for treating formaldehyde and urotropine wastewater adopt manual methods, a water sample and a Fenton reagent are directly added into a temporarily built beaker or a conical flask for reaction, after the reaction is finished, a supernatant is statically placed, the supernatant is treated, and the reagent is added, and then the content of formaldehyde in the water sample is measured by a spectrophotometry method. However, the traditional method has the following problems in the aspect of systematically exploring the matching and the selection of the formaldehyde wastewater treatment medicament:
1) failure to accurately study H2O2And FeSO4The influence of concentration, pH value, reaction temperature and reaction time on the removal efficiency. The chemical reaction is a dynamic process inReagents are added into a beaker or a conical flask at one time, and the concentration, the pH value and the temperature of each reagent are changed in real time along with the reaction, so that the removal efficiency corresponding to the concentration, the pH value and the temperature of a certain reagent cannot be accurately known. In actual engineering, the dosage of the reagent directly influences the operation cost; the pH value and the temperature in the reaction process have decisive influence on the removal efficiency; the reaction time directly affects the investment cost and the operation cost of the project, and if the influence of each influence factor on the efficiency cannot be accurately known, the application of the actual engineering cannot be effectively guided.
2) The method has the advantages of large error, large artificial interference, low automation degree, low efficiency and influence on the accuracy and the applicability of research. The conventional research method is to manually perform experiments, including manually adding reagents, manually terminating the experiments, manually sampling and testing the content of formaldehyde, and the like, and the artificial influence factors are large, so that the repeatability of the experiments is poor.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model aims to provide a formaldehyde wastewater treatment parameter allocation system based on a Fenton catalytic oxidation method, which can be used for researching the real-time influence of the parameter conditions such as hydrogen peroxide concentration, ferrous sulfate solution concentration, reaction pH value, reaction time, reaction temperature and the like on formaldehyde removal efficiency in the dynamic reaction process of treating formaldehyde wastewater by a Fenton catalytic oxidation method, so as to screen out the most appropriate formaldehyde wastewater treatment parameters; the system has the advantages of high automation degree, convenience, rapidness, good stability and accuracy.
The utility model provides a formaldehyde wastewater treatment parameter allocation system based on a Fenton catalytic oxidation method, which comprises the following steps:
a hydrogen peroxide agent tank, a ferrous sulfate solution agent tank and a formaldehyde wastewater tank;
the first temperature control liquid tank is connected with the liquid outlet of the hydrogen peroxide solution tank, and a liquid outlet metering pump of the hydrogen peroxide solution tank is arranged on a connecting pipeline of the first temperature control liquid tank;
a second temperature control liquid tank connected with the liquid outlet of the ferrous sulfate solution medicament tank and the liquid outlet of the formaldehyde waste water tank respectively, wherein a ferrous sulfate solution medicament tank liquid outlet metering pump is arranged on a connecting pipeline between the liquid outlet of the ferrous sulfate solution medicament tank and the second temperature control liquid tank, and a formaldehyde waste water tank liquid outlet metering pump is arranged on a connecting pipeline between the liquid outlet of the formaldehyde waste water tank and the second temperature control liquid tank;
the Fenton reactor is respectively connected with the liquid outlet of the first temperature control liquid tank and the liquid outlet of the second temperature control liquid tank, a first temperature control liquid tank liquid outlet metering pump is arranged on a connecting pipeline between the liquid outlet of the first temperature control liquid tank and the Fenton reactor, and a second temperature control liquid tank liquid outlet metering pump is arranged on a connecting pipeline between the liquid outlet of the second temperature control liquid tank and the Fenton reactor;
the temperature control device is used for regulating and controlling the temperatures of the first temperature control liquid tank, the second temperature control liquid tank and the Fenton reactor;
the flow control device is used for regulating and controlling the flow of the hydrogen peroxide agent tank liquid outlet metering pump, the ferrous sulfate solution agent tank liquid outlet metering pump, the formaldehyde wastewater tank liquid outlet metering pump, the first temperature control liquid tank liquid outlet metering pump and the second temperature control liquid tank liquid outlet metering pump;
the formaldehyde concentration on-line monitoring device is used for monitoring the formaldehyde concentration at the liquid outlet of the formaldehyde wastewater tank and the liquid outlet of the Fenton reactor;
and the pH value on-line monitoring device is used for monitoring the pH values of the liquid outlet of the formaldehyde wastewater tank and the liquid outlet of the Fenton reactor.
Preferably, the fenton reactor is provided with a plurality of liquid outlets along the height direction thereof, and each liquid outlet is provided with a valve.
Preferably, the plurality of liquid outlets are spirally arranged along the height direction of the Fenton reactor.
Preferably, still include the waste liquid holding vessel, the inlet of waste liquid holding vessel with the liquid outlet of fenton's reactor is connected.
Preferably, a stirring device is arranged in the fenton reactor.
Preferably, the fenton reactor is provided with a scale along the height direction thereof.
Preferably, a stirring device is arranged in the first temperature control liquid tank; and a stirring device is arranged in the second temperature control liquid tank.
Preferably, the first temperature control liquid tank is provided with a graduated scale along the height direction; and the second temperature control liquid tank is provided with a graduated scale along the height direction.
Preferably, the hydrogen peroxide agent tank is provided with a graduated scale along the height direction; the ferrous sulfate solution medicament tank is provided with a graduated scale along the height direction; the formaldehyde wastewater tank is provided with a graduated scale along the height direction.
Compared with the prior art, the utility model provides a formaldehyde wastewater treatment parameter allocation system based on a Fenton catalytic oxidation method. The system provided by the utility model comprises: a hydrogen peroxide agent tank, a ferrous sulfate solution agent tank and a formaldehyde wastewater tank; the first temperature control liquid tank is connected with the liquid outlet of the hydrogen peroxide solution tank, and a liquid outlet metering pump of the hydrogen peroxide solution tank is arranged on a connecting pipeline of the first temperature control liquid tank; a second temperature control liquid tank connected with the liquid outlet of the ferrous sulfate solution medicament tank and the liquid outlet of the formaldehyde waste water tank respectively, wherein a ferrous sulfate solution medicament tank liquid outlet metering pump is arranged on a connecting pipeline between the liquid outlet of the ferrous sulfate solution medicament tank and the second temperature control liquid tank, and a formaldehyde waste water tank liquid outlet metering pump is arranged on a connecting pipeline between the liquid outlet of the formaldehyde waste water tank and the second temperature control liquid tank; the Fenton reactor is respectively connected with the liquid outlet of the first temperature control liquid tank and the liquid outlet of the second temperature control liquid tank, a first temperature control liquid tank liquid outlet metering pump is arranged on a connecting pipeline between the liquid outlet of the first temperature control liquid tank and the Fenton reactor, and a second temperature control liquid tank liquid outlet metering pump is arranged on a connecting pipeline between the liquid outlet of the second temperature control liquid tank and the Fenton reactor; the temperature control device is used for regulating and controlling the temperatures of the first temperature control liquid tank, the second temperature control liquid tank and the Fenton reactor; the flow control device is used for regulating and controlling the flow of the hydrogen peroxide agent tank liquid outlet metering pump, the ferrous sulfate solution agent tank liquid outlet metering pump, the formaldehyde wastewater tank liquid outlet metering pump, the first temperature control liquid tank liquid outlet metering pump and the second temperature control liquid tank liquid outlet metering pump; the formaldehyde concentration on-line monitoring device is used for monitoring the formaldehyde concentration at the liquid outlet of the formaldehyde wastewater tank and the liquid outlet of the Fenton reactor; and the pH value on-line monitoring device is used for monitoring the pH values of the liquid outlet of the formaldehyde wastewater tank and the liquid outlet of the Fenton reactor. In the utility model, by adjusting the parameter conditions during the operation of the system, the real-time influence of the parameter conditions such as hydrogen peroxide concentration, ferrous sulfate solution concentration, reaction pH value, reaction time, reaction temperature and the like on the formaldehyde removal efficiency in the dynamic reaction process of treating the formaldehyde wastewater by the Fenton catalytic oxidation method can be researched, so that the optimum parameter conditions for treating the formaldehyde wastewater by the Fenton catalytic oxidation method can be rapidly and accurately obtained, and technical guidance is provided for the practical engineering application of the Fenton catalytic oxidation technology.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of a formaldehyde wastewater treatment parameter allocation system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides a formaldehyde wastewater treatment parameter allocation system based on a Fenton catalytic oxidation method, which comprises the following steps:
a hydrogen peroxide agent tank, a ferrous sulfate solution agent tank and a formaldehyde wastewater tank;
the first temperature control liquid tank is connected with the liquid outlet of the hydrogen peroxide solution tank, and a liquid outlet metering pump of the hydrogen peroxide solution tank is arranged on a connecting pipeline of the first temperature control liquid tank;
a second temperature control liquid tank connected with the liquid outlet of the ferrous sulfate solution medicament tank and the liquid outlet of the formaldehyde waste water tank respectively, wherein a ferrous sulfate solution medicament tank liquid outlet metering pump is arranged on a connecting pipeline between the liquid outlet of the ferrous sulfate solution medicament tank and the second temperature control liquid tank, and a formaldehyde waste water tank liquid outlet metering pump is arranged on a connecting pipeline between the liquid outlet of the formaldehyde waste water tank and the second temperature control liquid tank;
the Fenton reactor is respectively connected with the liquid outlet of the first temperature control liquid tank and the liquid outlet of the second temperature control liquid tank, a first temperature control liquid tank liquid outlet metering pump is arranged on a connecting pipeline between the liquid outlet of the first temperature control liquid tank and the Fenton reactor, and a second temperature control liquid tank liquid outlet metering pump is arranged on a connecting pipeline between the liquid outlet of the second temperature control liquid tank and the Fenton reactor;
the temperature control device is used for regulating and controlling the temperatures of the first temperature control liquid tank, the second temperature control liquid tank and the Fenton reactor;
the flow control device is used for regulating and controlling the flow of the hydrogen peroxide agent tank liquid outlet metering pump, the ferrous sulfate solution agent tank liquid outlet metering pump, the formaldehyde wastewater tank liquid outlet metering pump, the first temperature control liquid tank liquid outlet metering pump and the second temperature control liquid tank liquid outlet metering pump;
the formaldehyde concentration on-line monitoring device is used for monitoring the formaldehyde concentration at the liquid outlet of the formaldehyde wastewater tank and the liquid outlet of the Fenton reactor;
and the pH value on-line monitoring device is used for monitoring the pH values of the liquid outlet of the formaldehyde wastewater tank and the liquid outlet of the Fenton reactor.
Referring to fig. 1, fig. 1 is a schematic view of a formaldehyde wastewater treatment parameter allocation system according to an embodiment of the present invention. Wherein, 1-1 is a hydrogen peroxide solution medicament tank, 1-2 is a ferrous sulfate solution medicament tank, 1-3 is a formaldehyde waste water tank, 2-1 is a first temperature control liquid tank, 2-2 is a second temperature control liquid tank, 3 is a Fenton reactor, 4 is a waste liquid storage tank, 5-1 is a hydrogen peroxide solution medicament tank liquid outlet metering pump, 5-2 is a ferrous sulfate solution medicament tank liquid outlet metering pump, 5-3 is a formaldehyde waste water tank liquid outlet metering pump, 5-4 is a first temperature control liquid tank liquid outlet metering pump, 5-5 is a second temperature control liquid tank liquid outlet metering pump, 6 is a temperature and flow control device, 7 is a formaldehyde concentration online monitoring device, 8 is a pH value online monitoring device, and 9 is a waste liquid discharge pipeline.
The utility model provides a formaldehyde wastewater treatment parameter allocation system, which comprises: the device comprises a hydrogen peroxide agent tank (1-1), a ferrous sulfate solution agent tank (1-2), a formaldehyde wastewater tank (1-3), a first temperature control liquid tank (2-1), a second temperature control liquid tank (2-2), a Fenton reactor (3), a temperature control device, a flow control device, a formaldehyde concentration online monitoring device (7) and a pH value online monitoring device (8).
In the formaldehyde wastewater treatment parameter allocation system provided by the utility model, a hydrogen peroxide agent tank (1-1) is used for containing hydrogen peroxide; the hydrogen peroxide agent tank (1-1) is preferably provided with a graduated scale along the height direction; the hydrogen peroxide agent tank (1-1) is preferably provided with a sealing cover to avoid the volatilization of the contents; the material of the hydrogen peroxide agent tank (1-1) is preferably acid-alkali-resistant and corrosion-resistant polytetrafluoroethylene.
In the formaldehyde wastewater treatment parameter allocation system provided by the utility model, a ferrous sulfate solution medicament tank (1-2) is used for containing a ferrous sulfate solution; the ferrous sulfate solution medicament tank (1-2) is preferably provided with a graduated scale along the height direction; the ferrous sulfate solution medicament tank (1-2) is preferably provided with a sealing cover to avoid volatilization of the contents; the ferrous sulfate solution medicament tank (1-2) is preferably made of acid-base-resistant and corrosion-resistant polytetrafluoroethylene.
In the formaldehyde wastewater treatment parameter allocation system provided by the utility model, a formaldehyde wastewater tank (1-3) is used for containing formaldehyde wastewater; the formaldehyde wastewater tank (1-3) is preferably provided with a graduated scale along the height direction; the formaldehyde wastewater tank (1-3) is preferably provided with a sealing cover to avoid the volatilization of the contents; the material of the formaldehyde wastewater tank (1-3) is preferably acid-alkali-resistant and corrosion-resistant polytetrafluoroethylene.
In the formaldehyde wastewater treatment parameter allocation system provided by the utility model, a liquid inlet of a first temperature control liquid tank (2-1) is connected with a liquid outlet of a hydrogen peroxide agent tank (1-1), and a liquid outlet metering pump (5-1) of the hydrogen peroxide agent tank (1-1) is arranged on a connecting pipeline of the first temperature control liquid tank and the hydrogen peroxide agent tank. In the utility model, the first temperature control liquid tank (2-1) has heating and heat preservation functions and is used for preheating hydrogen peroxide, so that temperature fluctuation caused when the hydrogen peroxide subsequently enters the Fenton reactor (3) is reduced, and the influence of the reaction temperature on the formaldehyde removal efficiency is accurately researched. In the utility model, a stirring device is preferably arranged in the first temperature-control liquid tank (2-1); the material of the first temperature control liquid tank (2-1) is preferably acid-alkali-resistant and corrosion-resistant polytetrafluoroethylene.
In the formaldehyde wastewater treatment parameter allocation system provided by the utility model, a liquid inlet of the second temperature control liquid tank (2-2) is respectively connected with a liquid outlet of the ferrous sulfate solution medicament tank (1-2) and a liquid outlet of the formaldehyde wastewater tank (1-3), wherein a ferrous sulfate solution medicament tank liquid outlet metering pump (5-2) is arranged on a connecting pipeline of the second temperature control liquid tank (2-2) and the ferrous sulfate solution medicament tank (1-2), and a formaldehyde wastewater tank liquid outlet metering pump (5-3) is arranged on a connecting pipeline of the second temperature control liquid tank (2-2) and the formaldehyde wastewater tank (1-3). In the utility model, the second temperature control liquid tank (2-2) has heating and heat preservation functions and is used for premixing and preheating the ferrous sulfate solution and the formaldehyde wastewater, and the temperature fluctuation caused when the mixed solution of the ferrous sulfate solution and the formaldehyde wastewater subsequently enters the Fenton reactor (3) can be reduced through preheating, so that the influence of the reaction temperature on the formaldehyde removal efficiency can be accurately researched. In the utility model, a stirring device is preferably arranged in the second temperature control liquid tank (2-2); the material of the second temperature control liquid tank (2-2) is preferably acid-alkali-resistant and corrosion-resistant polytetrafluoroethylene material.
In the formaldehyde wastewater treatment parameter allocation system provided by the utility model, the Fenton reactor (3) is used as the formaldehyde wastewater and FeSO4And H2O2The reaction place has heating and heat preservation functions, the liquid inlet of the reaction place is respectively connected with the liquid outlet of the first temperature control liquid tank (2-1) and the liquid outlet of the second temperature control liquid tank (2-2), wherein a first temperature control liquid tank liquid outlet metering pump (5-4) is arranged on a connecting pipeline of the Fenton reactor (3) and the first temperature control liquid tank (2-1), and a second temperature control liquid tank liquid outlet metering pump (5-4) is arranged on a connecting pipeline of the Fenton reactor (3) and the second temperature control liquid tank (2-2)And the two temperature control liquid tanks discharge liquid metering pumps (5-5). In the utility model, the Fenton reactor (3) is preferably provided with a plurality of liquid outlets along the height direction, and each liquid outlet is provided with a valve; because the time required for the liquid level to reach the liquid outlets at different positions in the reaction process is different, namely the reaction time is different, the reaction time can be controlled by controlling the opening and closing of the valves of the liquid outlets at different positions, and the influence of different reaction times on the formaldehyde removal efficiency can be researched. In the utility model, the multiple liquid outlets on the Fenton reactor (3) are preferably arranged spirally along the height direction of the Fenton reactor (3); the design can avoid the relevant interference of all valves in the operation, is convenient to operate and is beneficial to timely discharging of liquid. In the present invention, the fenton reactor (3) is preferably provided with a stirring device; the material of the Fenton reactor (3) is preferably acid-base-resistant and corrosion-resistant polytetrafluoroethylene.
In the formaldehyde wastewater treatment parameter allocation system provided by the utility model, the temperature control device is used for regulating and controlling the temperatures of the first temperature control liquid tank (2-1), the second temperature control liquid tank (2-2) and the Fenton reactor (3). In the utility model, by using the temperature control device, the influence of different reaction temperatures on the formaldehyde removal efficiency can be researched.
In the formaldehyde wastewater treatment parameter allocation system provided by the utility model, the flow control device is used for regulating and controlling the flow of the hydrogen peroxide solution tank (1-1) liquid outlet metering pump (5-1), the ferrous sulfate solution tank (1-2) liquid outlet metering pump (5-2), the formaldehyde wastewater tank (1-3) liquid outlet metering pump (5-3), the first temperature control liquid tank (2-1) liquid outlet metering pump (5-4) and the second temperature control liquid tank (2-2) liquid outlet metering pump (5-5). In the utility model, by utilizing the flow control device, the influence of different medicament proportioning dosages on the formaldehyde removal efficiency can be researched.
In the formaldehyde wastewater treatment parameter allocation system provided by the utility model, the temperature control device and the flow control device are preferably integrated together, namely the temperature and flow control device (6) shown in fig. 1.
In the formaldehyde wastewater treatment parameter allocation system provided by the utility model, the formaldehyde concentration online monitoring device (7) is used for monitoring the formaldehyde concentrations of the liquid outlets of the formaldehyde wastewater tanks (1-3) and the Fenton reactor (3), so that the formaldehyde removal efficiency is calculated. In the utility model, the formaldehyde detection method adopted by the formaldehyde concentration online monitoring device (7) is preferably ultraviolet spectrophotometry.
In the formaldehyde wastewater treatment parameter allocation system provided by the utility model, the pH value online monitoring device (8) is used for monitoring the pH values of the liquid outlets of the formaldehyde wastewater tanks (1-3) and the liquid outlet of the Fenton reactor (3), so that the influence of different reaction pH values on formaldehyde removal efficiency is researched.
In the formaldehyde wastewater treatment parameter allocation system provided by the utility model, the system preferably further comprises a waste liquid storage tank (4), wherein a liquid inlet of the waste liquid storage tank (4) is connected with a liquid outlet of the Fenton reactor (3) and is used for containing liquid after the Fenton reaction, and then the liquid is treated and discharged in a unified manner, so that the environment pollution is avoided. In the utility model, a liquid outlet of the waste liquid storage tank (4) is preferably connected with a waste liquid discharge pipeline (9); in the utility model, the material of the waste liquid storage tank (4) is preferably acid-alkali-resistant and corrosion-resistant polytetrafluoroethylene.
In the formaldehyde wastewater treatment parameter allocation system provided by the utility model, the connecting pipelines among the devices are preferably acid-base-resistant and corrosion-resistant polytetrafluoroethylene pipes.
The utility model also provides a formaldehyde wastewater treatment parameter allocation method based on the Fenton catalytic oxidation method, which comprises the following steps:
the formaldehyde wastewater is treated in the formaldehyde wastewater treatment parameter allocation system in the technical scheme, and the parameter conditions during treatment are adjusted to obtain the formaldehyde removal efficiency under the corresponding parameter conditions.
The technical scheme provided by the utility model can study the real-time influence of the parameter conditions such as hydrogen peroxide concentration, ferrous sulfate solution concentration, reaction pH value, reaction time, reaction temperature and the like on formaldehyde removal efficiency in the dynamic reaction process of treating formaldehyde wastewater by the Fenton catalytic oxidation method, so that the optimum parameter conditions for treating formaldehyde wastewater by the Fenton catalytic oxidation method can be quickly and accurately obtained, and guidance is provided for the practical engineering application of the Fenton catalytic oxidation technology. More specifically, the technical scheme provided by the utility model has the following advantages:
1) the influence of different reagents on the formaldehyde removal efficiency can be researched by adjusting the concentration and the flow of the raw materials;
2) the influence of different temperatures on the formaldehyde removal efficiency can be researched by adjusting the temperatures of the liquid material tank and the reactor;
3) the influence of different reaction times on the formaldehyde removal efficiency can be studied by adjusting the residence time of the materials in the reactor.
4) The method has the advantages of high automation degree, convenience, rapidness, good repeatability and reliability, and can quickly determine the appropriate formaldehyde wastewater treatment parameter conditions.
For the sake of clarity, the following examples are given in detail.
Example 1
As shown in fig. 1, the present embodiment provides a formaldehyde wastewater treatment parameter allocation system, which includes: a hydrogen peroxide agent tank (1-1), a ferrous sulfate solution agent tank (1-2), a formaldehyde wastewater tank (1-3), a first temperature control liquid tank (2-1), a second temperature control liquid tank (2-2), a Fenton reactor (3), a waste liquid storage tank (4), a hydrogen peroxide agent tank effluent metering pump (5-1), a ferrous sulfate solution agent tank effluent metering pump (5-2), a formaldehyde wastewater tank effluent metering pump (5-3), a first temperature control liquid tank effluent metering pump (5-4), a second temperature control liquid tank effluent metering pump (5-5), a temperature and flow control device (6), a formaldehyde concentration online monitoring device (7), a pH value online monitoring device (8) and a waste liquid discharge pipeline (9), wherein the specific structure, material selection and connection relation of each device is introduced in the above, and will not be described in detail herein.
The system provided by the embodiment can be used for researching the H in the process of treating the formaldehyde wastewater by the Fenton catalytic oxidation method2O2And FeSO4The method comprises the following steps of determining the optimal parameter conditions according to the influence of factors such as the dosage, the pH value in the reaction process, the reaction time, the reaction temperature and the like on the formaldehyde removal efficiency, wherein the specific steps are as follows:
preparing H with a certain concentration2O2Solution and FeSO4The solutions are respectively filled into hydrogen peroxideIn the chemical tank (1-1) and the ferrous sulfate solution chemical tank (1-2), the formaldehyde wastewater to be treated is taken and filled into a formaldehyde wastewater tank (1-3); opening a liquid outlet valve of the Fenton reactor (3) with a certain height, and closing other liquid outlet valves on the Fenton reactor (3); setting the temperatures of a first temperature control liquid tank (2-1), a second temperature control liquid tank (2-2) and a Fenton reactor (3), and starting a temperature control unit of a temperature and flow control device (6); starting a formaldehyde concentration online monitoring device (7) and a pH value online monitoring device (8); starting a stirring device of the first temperature control liquid tank (2-1), the second temperature control liquid tank (2-2) and the Fenton reactor (3); setting the flow rates of the metering pumps (5-1) - (5-5) through the flow rate control units of the temperature and flow rate control device (6) respectively, and starting the Fenton reaction; during the reaction, certain flow of FeSO4The solution and the formaldehyde wastewater enter a second temperature control liquid tank (2-2), are uniformly stirred by a stirring device and then flow into a Fenton reactor (3); h in hydrogen peroxide agent tank (1-1)2O2The solution flows through the first temperature control liquid tank (2-1) at a certain flow rate and then enters the Fenton reactor (3) to react with FeSO in the Fenton reactor (3)4And CH2Performing O reaction, wherein after the reaction is carried out for a certain time, the liquid level in the Fenton reactor (3) reaches an overflow liquid level at a certain height, the reacted waste liquid overflows into a waste liquid storage tank (4) through a liquid outlet at a corresponding height, and simultaneously, the formaldehyde concentration of the liquid outlet of the formaldehyde waste water tank (1-3) and the formaldehyde concentration of the liquid outlet of the Fenton reactor (3) are monitored in real time through a formaldehyde concentration online monitoring device (7), and the formaldehyde removal efficiency is calculated;
in the above steps provided in this example, different concentrations of H were prepared2O2Solution, FeSO4Adjusting the liquid outlet flow of the hydrogen peroxide solution tank (1-1), the ferrous sulfate solution tank (1-2) and the formaldehyde waste water tank (1-3), and researching the influence of different reagent ratios on the formaldehyde waste water removal efficiency; the influence of different reaction temperatures on the formaldehyde waste liquid removal efficiency can be researched by adjusting the temperatures of the first temperature control liquid tank (2-1), the second temperature control liquid tank (2-2) and the Fenton reactor (3); the influence of different reaction times on the formaldehyde waste liquid removal efficiency can be researched by adjusting the height of the liquid outlet of the Fenton reactor (3); by monitoring the pH value in real time, the pH value can be monitoredDetermining the removal efficiency of the formaldehyde waste liquid at different pH values; by adjusting the parameters, the most suitable medicament ratio, pH value, reaction temperature and reaction time in the process of treating the formaldehyde wastewater by the Fenton catalytic oxidation method can be quickly and accurately obtained.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. The utility model provides a formaldehyde waste water treatment parameter allotment system based on fenton catalytic oxidation method which characterized in that includes:
a hydrogen peroxide agent tank, a ferrous sulfate solution agent tank and a formaldehyde wastewater tank;
the first temperature control liquid tank is connected with the liquid outlet of the hydrogen peroxide solution tank, and a liquid outlet metering pump of the hydrogen peroxide solution tank is arranged on a connecting pipeline of the first temperature control liquid tank;
a second temperature control liquid tank connected with the liquid outlet of the ferrous sulfate solution medicament tank and the liquid outlet of the formaldehyde waste water tank respectively, wherein a ferrous sulfate solution medicament tank liquid outlet metering pump is arranged on a connecting pipeline between the liquid outlet of the ferrous sulfate solution medicament tank and the second temperature control liquid tank, and a formaldehyde waste water tank liquid outlet metering pump is arranged on a connecting pipeline between the liquid outlet of the formaldehyde waste water tank and the second temperature control liquid tank;
the Fenton reactor is respectively connected with the liquid outlet of the first temperature control liquid tank and the liquid outlet of the second temperature control liquid tank, a first temperature control liquid tank liquid outlet metering pump is arranged on a connecting pipeline between the liquid outlet of the first temperature control liquid tank and the Fenton reactor, and a second temperature control liquid tank liquid outlet metering pump is arranged on a connecting pipeline between the liquid outlet of the second temperature control liquid tank and the Fenton reactor;
the temperature control device is used for regulating and controlling the temperatures of the first temperature control liquid tank, the second temperature control liquid tank and the Fenton reactor;
the flow control device is used for regulating and controlling the flow of the hydrogen peroxide agent tank liquid outlet metering pump, the ferrous sulfate solution agent tank liquid outlet metering pump, the formaldehyde wastewater tank liquid outlet metering pump, the first temperature control liquid tank liquid outlet metering pump and the second temperature control liquid tank liquid outlet metering pump;
the formaldehyde concentration on-line monitoring device is used for monitoring the formaldehyde concentration at the liquid outlet of the formaldehyde wastewater tank and the liquid outlet of the Fenton reactor;
and the pH value on-line monitoring device is used for monitoring the pH values of the liquid outlet of the formaldehyde wastewater tank and the liquid outlet of the Fenton reactor.
2. The formaldehyde wastewater treatment parameter adjusting system according to claim 1, wherein the Fenton reactor is provided with a plurality of liquid outlets along the height direction of the Fenton reactor, and each liquid outlet is provided with a valve.
3. The formaldehyde wastewater treatment parameter adjusting system according to claim 2, wherein the plurality of liquid outlets are arranged spirally along a height direction of the Fenton reactor.
4. The formaldehyde wastewater treatment parameter allocating system according to claim 1, further comprising a waste liquid storage tank, wherein a liquid inlet of the waste liquid storage tank is connected with a liquid outlet of the Fenton reactor.
5. The formaldehyde wastewater treatment parameter blending system according to claim 1, wherein a stirring device is disposed in the Fenton reactor.
6. The formaldehyde wastewater treatment parameter adjusting system according to claim 1, wherein the Fenton reactor is provided with a scale along a height direction thereof.
7. The formaldehyde wastewater treatment parameter blending system according to claim 1, wherein a stirring device is arranged in the first temperature-control liquid tank; and a stirring device is arranged in the second temperature control liquid tank.
8. The formaldehyde wastewater treatment parameter blending system according to claim 1, wherein the first temperature-control liquid tank is provided with a graduated scale along a height direction thereof; and the second temperature control liquid tank is provided with a graduated scale along the height direction.
9. The formaldehyde wastewater treatment parameter blending system according to claim 1, wherein the hydrogen peroxide agent tank is provided with a scale along the height direction thereof; the ferrous sulfate solution medicament tank is provided with a graduated scale along the height direction; the formaldehyde wastewater tank is provided with a graduated scale along the height direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121621291.8U CN215924500U (en) | 2021-07-16 | 2021-07-16 | Formaldehyde wastewater treatment parameter allocation system based on Fenton catalytic oxidation method |
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| CN113443696A (en) * | 2021-07-16 | 2021-09-28 | 福建国环环境检测有限公司 | Fenton catalytic oxidation method-based formaldehyde wastewater treatment parameter allocation system and application thereof |
| CN117142728A (en) * | 2023-10-27 | 2023-12-01 | 珙县华洁危险废物治理有限责任公司成都分公司 | Method for treating waste water after oil-based rock debris thermal desorption |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113443696A (en) * | 2021-07-16 | 2021-09-28 | 福建国环环境检测有限公司 | Fenton catalytic oxidation method-based formaldehyde wastewater treatment parameter allocation system and application thereof |
| CN117142728A (en) * | 2023-10-27 | 2023-12-01 | 珙县华洁危险废物治理有限责任公司成都分公司 | Method for treating waste water after oil-based rock debris thermal desorption |
| CN117142728B (en) * | 2023-10-27 | 2024-02-27 | 珙县华洁危险废物治理有限责任公司成都分公司 | Method for treating waste water after oil-based rock debris thermal desorption |
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