CN108203218A - A kind of harmless treatment process of oily sludge - Google Patents
A kind of harmless treatment process of oily sludge Download PDFInfo
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- CN108203218A CN108203218A CN201810012618.8A CN201810012618A CN108203218A CN 108203218 A CN108203218 A CN 108203218A CN 201810012618 A CN201810012618 A CN 201810012618A CN 108203218 A CN108203218 A CN 108203218A
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- treatment process
- harmless treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention relates to a kind of harmless treatment process containing sludge, which includes the following steps：First mixing step stirs evenly oily sludge and foamable polymer powder, obtains first polymer mud mixture；First polymer mud mixture is placed in squeezer by expression separation step, squeezes out liquid therein, obtains oil water mixture and squeezing mixture, and the oil water mixture separates fuel-displaced and water after standing；Three phase separation step, mud mixture is placed in container, adds in water, layering, upper strata is polymer powder clc layer, middle level is water layer, and lower floor is mud layer.
Description
Technical field
The present invention relates to a kind of harmless treatment process of oily sludge.
Background technology
Petrochemical Enterprises generate a large amount of oily sludge in petroleum refining and wastewater treatment process, they are essentially from oil removal
Pond, floation tank, residual active sludge, crude oil drain sump, oil storage tank and slop tank etc..These sludge components are complicated, belong to relatively steady
Fixed heterogeneous system, and mix fully, viscosity is larger, and solid phase is difficult to thoroughly settle, and disposal of oily sludge is difficult.At present, China
In petroleum chemical industry, 800,000 tons of oily sludges are about generated every year on average.With the continuous expansion of enterprise's process units scale, phase
The waste sludge discharge total amount and type answered also are increasing step by step so that rising is also presented in pollutant discharge of enterprise total amount and pollution abatement costs
Trend.In recent years, with the continuous improvement that national environmental protection statutory standard requires, law enforcement for environmental protection dynamics continues to increase, production process
Generated in solid waste contamination control and recycling, it has also become puzzlement oil and PETROLEUM PROCESSING industry problem.
Newly revise《Prevention and control of environmental pollution by solid wastes method》More strict requirements are proposed to solid waste prevention.The processing of solid waste
With utilizing the important process content for having been cited as construction economies society.
Development with national economy and the attention to environmental protection, more and more institutions conducts to oily sludge at
The research of reason.But most technologies are because processing cost is high, technological process is long, complicated for operation, treatment effect is undesirable or other are multi-party
The reason of face, the treatment technology of oily sludge, it is difficult to be widely applied to form industrialized production.At present, oily sludge is most
It is handled using air storage or land-fill method, the substances such as hydro carbons, benzene homologues, phenols and anthracene class is typically contained in these sludge, and
With stench and toxicity, if directly being contacted with natural environment, larger pollution can be caused to soil, water body and vegetation, also result in stone
The waste of oily resource.
CN1488591A proposes a kind of processing method of oily sludge, and oily sludge is carried out mechanical dehydration, Ran Houyu
Extractant is mixed and is preheated, and is carried out extraction heat-dehydration after mixing homogeneous, is then carried out separation of solid and liquid, liquid phase enters coking
Device, solid phase is as fuel.The technology needs to preheat material in extraction process, and preheating temperature is 50~100 DEG C, extraction
Operation temperature is 100~150 DEG C during taking, and energy expenditure is big；Moisture is too many in oily sludge, and extraction is not thorough, after extraction
After residue also needs to burning processing after desiccation, innoxious effect can be only achieved.
CN1526797A proposes a kind of oily sludge extracting process, and selection extractant is light tar（Boiling point under normal pressure
45~90 DEG C）, petroleum ether, light oil or C5, using solvent to the dissolution of fuel oil in oily sludge, in oily sludge
Water, oil and mud are detached.But the extractant condition of the technology be 45~55 DEG C of extraction temperature, energy in extraction process
Consumption is higher, and oily sludge does not carry out deep dehydration to oily sludge before extraction in the technology, and oily sludge is by extraction
Oil extraction afterwards is not easy thoroughly.
CN1765781A proposes a kind of processing method of oily sludge, is mixed using extractant with oily sludge, extracts steaming
Send out dehydration and separation of solid and liquid, it is characterised in that multiple-effect is multistage or single-action multitple extraction steams method system, and the multiple-effect is multistage
The operating condition of extracting, evaporating system is as follows：Its first order uses normal pressure, and temperature is 95~115 DEG C, and afterbody pressure is
0.01~0.60MPa, temperature are 125~175 DEG C.The technology skill does not carry out deep dehydration processing to oily sludge before extraction,
Moisture is too many in oily sludge in the process, and extraction is not thorough, high organic content in the solid phase after separation, and in extraction process
It needs to heat material, needs multitple extraction, technological process is long, and equipment is more, and equipment investment is big, and energy expenditure is big.
CN101633574A and CN101362979A proposes a kind of processing method of oily sludge, and oily sludge is adjusted
It mixes with coal after matter, press filtration and is used as fuel, fail to recycle the oil in oily sludge.
CN101343137A proposes a kind of processing method of oily sludge, by oily sludge is quenched, dehydration, the processing such as dry
After carry out burning disposal.High energy consumption in oily sludge drying process, and be easy to generate stench tail gas, generate new pollution.
CN103693833A proposes a kind of processing method of oily sludge, includes the following steps：Make oily sludge first
Mechanical dehydration is carried out, the moisture content of oily sludge is made to be down to 50%~90%, then by the oily sludge after mechanical dehydration with having
The grains of sand of 20~200 μm of grain sizes 1 ︰ in mass ratio (0.05~0.3) is mixed, and press apparatus is sent into after stirring evenly and is squeezed,
The mud cake generated after squeezing is mixed with extractant, is stirred evenly and is extracted, and mixed material is sent into solid-liquid point after extraction
From device, the liquid isolated directly carries out freshening, and the solid residue after separation can be used as solid waste to handle after drying.
In the prior art due to containing in sludge containing a large amount of water, need to carry out dehydration, so as to obtain preferably
Treatment effect, but dehydration needs to expend a large amount of energy.The complex treatment process of the prior art and it can not realize oil-containing
The harmless treatment of sludge.
Invention content
In order to solve the above technical problem, the present invention provides a kind of harmless treatment process for containing [1] sludge, packets
Include following steps：
First mixing step stirs evenly oily sludge and foamable polymer powder, obtains first polymer mud mixture；
First polymer mud mixture is placed in squeezer by expression separation step, squeezes out liquid therein, and separation is fuel-displaced
Water mixed liquid obtains squeezing mixture；
Obtained mixture is placed in container by three phase separation step, add in water, layering, upper strata for polymer powder clc layer,
Middle level is water layer, and lower floor is mud layer.
The moisture content of the oily sludge is 10-90%.
Mixing time in first mixing step is 10-40 minutes.
In first mixing step, the mass ratio of oily sludge and foamable polymer powder is 1：0.2-2.
The harmless treatment process further includes the second mixing step, and second mixing step is：In squeezing mixture
In add in foamable polymer powder again, be uniformly mixed, obtain second polymer mud mixture.
In second mixing step, the mass ratio of squeezing mixture and foamable polymer powder is 1：0.1-1.
In the three phase separation step, the mass ratio of second polymer mud mixture and water is 1：0.1-2.
Time of repose is 10-60 minutes in the three phase separation step.
The foamable polymer powder is selected from polyethylene foamed powder, expanded polypropylene powder, foamed styrene powder, hair
Steep one or more of ABS powder, polyurathamc powder, expanded polypropylene acid powder, blown rubber powder.
The grain size of the foamable polymer powder is 1-100 microns.
The harmless treatment process further includes adsorption step, and the adsorption step obtains for handling in three phase separation step
The water layer arrived.
The harmless treatment process further includes separating step, and the separating step is used to obtain in three phase separation step
Polymer powder clc layer in polymer powder and greasy dirt at a high speed drying separation.
Due to being adequately mixed containing oil, water and the silt in sludge and having formed uniform liquid, it is difficult to be divided
From.Gather by the present invention in that being squeezed after being sufficiently mixed with foamable polymer powder and oily sludge and being mixed into foaming again
Object powder is closed, using the adsorption capacity of foamable polymer powder, realizes efficiently separating for grease mud.The moisture isolated passes through
After adsorbing pulvis filtering, COD is less than 30mg/L.Organic matter mass content in mud after separation is less than 1%.Foamable polymer powder
End can be efficiently separated with greasy dirt, and recycling can be realized by simply drying separation.
The above-mentioned of the application and other features, aspect and advantage is more readily understood with reference to following detailed description.
Specific embodiment
Unless otherwise defined, all technologies used herein and scientific terminology have and the common skill of fields of the present invention
The normally understood identical meaning of art personnel.When there is a conflict, the definition in this specification shall prevail.
The present invention provides a kind of harmless treatment process containing sludge, include the following steps：
First mixing step stirs evenly oily sludge and foamable polymer powder, obtains first polymer mud mixture；
First polymer mud mixture is placed in squeezer by expression separation step, squeezes out liquid therein, and separation is fuel-displaced
Water mixed liquid obtains squeezing mixture；
Obtained mixture is placed in container by three phase separation step, add in water, layering, upper strata for polymer powder clc layer,
Middle level is water layer, and lower floor is mud layer.
As a preferred embodiment of the present invention, the moisture content of the oily sludge is 10-90%.
As a preferred embodiment of the present invention, the mixing time in first mixing step is 10-40 points
Clock.
As a preferred embodiment of the present invention, in first mixing step, oily sludge and foamed polymer
The mass ratio of object powder is 1：0.2-2.
As a preferred embodiment of the present invention, in second mixing step, squeezing mixture is poly- with foaming
The mass ratio for closing object powder is 1：0.1-1.
As a preferred embodiment of the present invention, harmless treatment process further includes the second mixing step, and second
Mixing step includes, and foamable polymer powder is added in again in mixture is squeezed, and is uniformly mixed, obtains second polymer sludge
Mixture.
As a preferred embodiment of the present invention, in the three phase separation step, the mixing of second polymer sludge
The mass ratio of object and water is 1：0.1-2.
As a preferred embodiment of the present invention, time of repose is 10-60 minutes in the three phase separation step.
As a preferred embodiment of the present invention, the foamable polymer powder be selected from polyethylene foamed powder,
Expanded polypropylene powder, foamed styrene powder, foaming ABS powder, polyurathamc powder, expanded polypropylene acid powder, hair
Steep one or more of rubber powder.
As a preferred embodiment of the present invention, the grain size of the foamable polymer powder is 1-100 microns.
As a preferred embodiment of the present invention, demulsifier is further included in the foamable polymer powder, it is described
The mass ratio that demulsifier is accounted in foamable polymer powder is 0.1%-5%.
As a preferred embodiment of the present invention, the harmless treatment process further includes adsorption step, described
Adsorption step is used to handle the water layer obtained in three phase separation step.
As a preferred embodiment of the present invention, the harmless treatment process further includes separating step, described
Separating step is used at a high speed get rid of the polymer powder in the polymer powder clc layer obtained in three phase separation step and greasy dirt
Dry separation.
Due to being adequately mixed containing oil, water and the silt in sludge and having formed uniform liquid, it is difficult to be divided
From.Gather by the present invention in that being squeezed after being sufficiently mixed with foamable polymer powder and oily sludge and being mixed into foaming again
Object powder is closed, using the adsorption capacity of foamable polymer powder, realizes efficiently separating for grease mud.The moisture isolated passes through
After adsorbing pulvis filtering, COD is less than 30mg/L.Organic matter mass content in mud after separation is less than 1%.Foamable polymer powder
End can be efficiently separated with greasy dirt, and recycling can be realized by simply drying separation.
Hereinafter, the present invention is explained in more detail by embodiment, it should be appreciated that these embodiments are only
Illustrate and not restrictive.It is if raw materials used to be all commercially available without other explanations.
The present invention is described in detail referring to several examples.
Embodiment 1
Greasy filth 300g (moisture content 69.4%, oil content 27.2%, solid content 3.4%) is taken to add in polyethylene foamed powder 130g stirrings equal
It is even（10min）, be positioned in squeezer, by grease squeeze out come, then by remainder be put into special separator carry out oil,
Three mud, water separation.Powder after separation can reuse after centrifuge dripping, and water phase, which can pass through, changes absorption pulvis mistake
Filter（COD is less than 30mg/L）, body refuse is innoxious.Recycling grease is stood into (30min）There is grease layering, recycle oil product
76.45g, body refuse organic matter mass content 1.94%.
Embodiment 2
Greasy filth 300g (moisture content 69.4%, oil content 27.2%, solid content 3.4%) is taken to add in polyethylene foamed powder 130g stirrings equal
It is even（10min）, it is positioned in squeezer, grease is squeezed out to come.Then by remainder be put into special separator carry out oil,
Three mud, water separation.Powder after separation can reuse after centrifuge dripping, and water phase, which can pass through, changes absorption pulvis mistake
Filter（COD is less than 30mg/L）, body refuse is innoxious.Recycling grease is stood into (30min）There is grease layering, recycle oil product
73.23g, body refuse organic matter mass content 2.11%.
Embodiment 3
Greasy filth 300g (moisture content 9.3%, oil content 87.7%, solid content 3%) is taken to add in polyethylene foamed powder 130g to stir evenly
（10min）, it is positioned in squeezer, grease is squeezed out to come；Then by remainder be put into special separator carry out oil, mud,
Three separation of water.Powder after separation can reuse after centrifuge dripping, and water phase, which can pass through, changes absorption pulvis filtering
（COD is less than 30mg/L）, body refuse is innoxious.Recycling grease is stood into (30min）There is grease layering, recycle oil product 221.66g,
Body refuse organic matter mass content 2.81%.
Embodiment 4
Greasy filth 300g (moisture content 69.4%, oil content 27.2%, solid content 3.4%) is taken to add in polyethylene foamed powder 130g stirrings equal
It is even（10min）, it is positioned in squeezer, grease is squeezed out to come, the sludge after squeezing de-oiling is secondary adds powder, adds 30g hairs
Polyethylene powder is steeped, is stirred（10min）, 15min is stood after stirring evenly, then put it into special separator carry out oil,
Three mud, water separation.Powder after separation can reuse after centrifuge dripping, and water phase, which can pass through, changes absorption pulvis mistake
Filter（COD is less than 30mg/L）, body refuse is innoxious.Recycling grease is stood into (30min）There is grease layering, recycle oil product
80.83g, body refuse organic matter mass content 1.13%.
Embodiment 5
Greasy filth 300g (moisture content 69.4%, oil content 27.2%, solid content 3.4%) is taken to add in polyethylene foamed powder 130g stirrings equal
It is even（10min）, it is positioned in squeezer, grease is squeezed out to come；Recycling grease is stood into (30min）There is grease layering.Pressure
Squeeze after de-oiling sludge is secondary plus powder, add 30g polyethylene foamed powder, be stirred（10min）, stood after stirring evenly
Then 15min puts it into special separator and carries out three oil, mud, water separation.Powder after separation, can after centrifuge dripping
With recycling, water phase, which can pass through, changes absorption pulvis filtering（COD is less than 30mg/L）, body refuse is innoxious.It is quiet grease will to be recycled
Put (30min）There is grease layering, recycle oil product 78.11g, body refuse organic matter mass content 1.45%.
Embodiment 6
Greasy filth 300g (moisture content 9.3%, oil content 87.7%, solid content 3%) is taken to add in polyethylene foamed powder 130g to stir evenly
（10min）, it is positioned in squeezer, grease is squeezed out to come；Recycling grease is stood into (30min）There is grease layering.Squeezing
Sludge after de-oiling is secondary plus powder, adds 30g polyethylene foamed powder, is stirred（10min）, stood after stirring evenly
Then 15min puts it into special separator and carries out three oil, mud, water separation.Powder after separation, can after centrifuge dripping
With recycling, water phase, which can pass through, changes absorption pulvis filtering（COD is less than 30mg/L）, body refuse is innoxious.It is quiet grease will to be recycled
Put (30min）There is grease layering, recycle oil product 241.20g, body refuse organic matter mass content 1.45%.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.Every basis
The equivalent changes and modifications that the content of present invention is done are encompassed by the scope of the claims of the present invention.
Claims (10)
1. a kind of harmless treatment process containing sludge, which is characterized in that include the following steps：
First mixing step stirs evenly oily sludge and foamable polymer powder, obtains first polymer mud mixture；
First polymer mud mixture is placed in squeezer by expression separation step, squeezes out liquid therein, and separation is fuel-displaced
Water mixed liquid obtains squeezing mixture；
Obtained mixture is placed in container by three phase separation step, add in water, layering, upper strata for polymer powder clc layer,
Middle level is water layer, and lower floor is mud layer.
A kind of 2. harmless treatment process containing sludge according to claim 1, which is characterized in that the oily sludge
Moisture content be 10-90%.
A kind of 3. harmless treatment process containing sludge according to claim 2, which is characterized in that first mixing
Mixing time in step is 10-40 minutes.
A kind of 4. harmless treatment process containing sludge according to claim 3, which is characterized in that first mixing
In step, the mass ratio of oily sludge and foamable polymer powder is 1：0.2-2.
A kind of 5. harmless treatment process containing sludge according to claim 4, which is characterized in that the innoxious place
Science and engineering skill further includes the second mixing step, and second mixing step is：Foamable polymer is added in again in mixture is squeezed
Powder is uniformly mixed, obtains second polymer mud mixture.
A kind of 6. harmless treatment process containing sludge according to claim 5, which is characterized in that second mixing
In step, the mass ratio of squeezing mixture and foamable polymer powder is 1：0.1-1.
A kind of 7. harmless treatment process containing sludge according to claim 6, which is characterized in that the three phase separation
In step, the mass ratio of second polymer mud mixture and water is 1：0.1-2.
A kind of 8. harmless treatment process containing sludge according to claim 7, which is characterized in that the three phase separation
Time of repose is 10-60 minutes in step.
A kind of 9. harmless treatment process containing sludge according to claim 8, which is characterized in that the innoxious place
Science and engineering skill further includes adsorption step, and the adsorption step is used to handle the water layer obtained in three phase separation step.
10. a kind of harmless treatment process containing sludge according to claim 9, which is characterized in that described innoxious
Treatment process further includes separating step, and the separating step is used for the polymer powder clc layer that will be obtained in three phase separation step
In polymer powder and greasy dirt at a high speed drying separation.
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| CN201810012618.8A CN108203218B (en) | 2018-01-05 | 2018-01-05 | Harmless treatment process for oily sludge |
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| CN201810012618.8A CN108203218B (en) | 2018-01-05 | 2018-01-05 | Harmless treatment process for oily sludge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110835267A (en) * | 2019-11-15 | 2020-02-25 | 天津杰臻环保技术有限公司 | Harmless treatment method for solid waste of offshore oil drilling platform |
| CN111186975A (en) * | 2020-03-11 | 2020-05-22 | 金碳环境科技（天津）有限公司 | Ultrasonic oil stain treatment process |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009113435A1 (en) * | 2008-03-14 | 2009-09-17 | Kaneko Tatsuo | Sugar derivative preparation |
| CN103693833A (en) * | 2012-09-28 | 2014-04-02 | 中国石油天然气股份有限公司 | Comprehensive treatment method for oily sludge |
| CN104119618A (en) * | 2014-07-21 | 2014-10-29 | 李林瑛 | Oil absorption material and preparation method and use thereof |
-
2018
- 2018-01-05 CN CN201810012618.8A patent/CN108203218B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009113435A1 (en) * | 2008-03-14 | 2009-09-17 | Kaneko Tatsuo | Sugar derivative preparation |
| CN103693833A (en) * | 2012-09-28 | 2014-04-02 | 中国石油天然气股份有限公司 | Comprehensive treatment method for oily sludge |
| CN104119618A (en) * | 2014-07-21 | 2014-10-29 | 李林瑛 | Oil absorption material and preparation method and use thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110835267A (en) * | 2019-11-15 | 2020-02-25 | 天津杰臻环保技术有限公司 | Harmless treatment method for solid waste of offshore oil drilling platform |
| CN111186975A (en) * | 2020-03-11 | 2020-05-22 | 金碳环境科技（天津）有限公司 | Ultrasonic oil stain treatment process |
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| CN108203218B (en) | 2020-09-01 |
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