CN105021785A - Detection method for combined residual chlorine in drinking water - Google Patents
Detection method for combined residual chlorine in drinking water Download PDFInfo
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- CN105021785A CN105021785A CN201510261017.7A CN201510261017A CN105021785A CN 105021785 A CN105021785 A CN 105021785A CN 201510261017 A CN201510261017 A CN 201510261017A CN 105021785 A CN105021785 A CN 105021785A
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Abstract
The invention relates to a detection method for combined residual chlorine in drinking water, which belongs to the technical field of chlorination and disinfection of drinking water. According to the method, a combined residual chlorine comparator is used as a main body; during detection, a probe is placed in drinking water for monitoring; monitoring results are converted into a micro signal which is transmitted to a sensor; then the sensor converts the micro signal and transmits the micro signal to an information processor; the information processor processes the micro signal so as to form a data signal; the data signal is transmitted into an information memory and the information memory carries out comparison and calculation on the data signal and original data in the information memory so as to form a working curve of the relationship between known current strength and unknown concentration of combined residual chlorine; and finally, the concentration of combined residual chlorine in drinking water is measured out. The method has the following beneficial effects: free residual chlorine and combined residual chlorine are separated and detect during detection, and separate detection of combined residual chlorine is realized; and the content of combined residual chlorine in water is rapidly and accurately monitored.
Description
Technical field
The invention discloses a kind of potable water chemical combination state chlorine residue detection method, belong to chlorination of drinking water disinfection technology field.
Background technology
Along with the development of society and the progressively raising of material life, food-safety problem have received general concern day by day; Combined residual chlorine mainly refers to the aminated compoundss such as time chloramines, dichlormaine, three chloramines, chloramines disinfection can reduce the secondary growing amount making product of sterilization, and more stable, can keep having more stable disinfectant residual effectively to control biomembranous growing power in Pipeline Water, but its oxidizing force is weak, and sterilization capability is poor.
Drinking Water is one of people's material of depending on for existence, China's Drinking Water water quality standard regulation, remaining chlorinity≤0.13mg/L in output water, remaining chlorinity≤0.105mg/L in Terminal tap water, this standard does not have the upper limit, and excessive chlorine residue not only can affect sleep to obtain mouthfeel and quality, have more harmfulness be the chlorine in water and the remaining organism in water occur chemistry side should, generate multiple halides, these halides have been proved has certain carcinogenic, mutagenesis.
The method of current detection chlorine residue mainly contains three kinds: be first portable DPD chlorine residual measurement instrument method, when not containing iodide ion in water sample, chemical combination effective chlorine produces redness with DPD reagent reacting immediately, add iodide ion and then play catalytic action, chlorine residue is also developed the color with reagent reacting, measures its absorbance respectively, obtain chlorine residue, but be greater than 250mg/L basicity or 150mg/L acidity when existing in water, all colours development or color will be faded immediately; Next is o-tolidine colorimetric method, and chlorine residue and o-tolidine react and generate yellow quinoid compound, carry out colorimetric assay with visual method, but is subject to measure containing during the interference of suspension material in water; Be finally online electrochemical analysis chlorine residue instrument, in primary element, can be detected the change of ion concentration by test electric current wherein, the electric current in bottle is changing into certain proportion with residual chlorine concentration, but the impact that electric current in primary element changes by pH value greatly; In order to solve the above problems, the invention provides a kind of detection method of footing residual chlorine, achieve free chlorine residual, footing residual chlorine separate detection, and be greater than 250mg/l basicity or 150mg/l acidity is unaffected when existing in water, monitor the content of the footing residual chlorine in water quickly and accurately.
Summary of the invention
The present invention can not by the problem of free chlorine residual, footing residual chlorine separate detection around current chlorine residue detection method, provide the detection method of chemical combination state chlorine residue in a kind of potable water, achieve the method that the chlorine residue of chemical combination state and free state chlorine residue detect respectively, monitor the concentration of the footing residual chlorine in water simultaneously quickly and accurately.
In order to achieve the above object, the technical solution adopted in the present invention is:
(1) return to zero: first with pure water to footing residual chlorine detector school zero, place for subsequent use;
(2) check: get damping fluid and be respectively the hydrochloric acid that concentration is 150mg/L, 250mg/L, 500mg/L, 1g/L, be dissolved in the chlorine residue water of 500-850mL and mix, use footing residual chlorine detector to detect immediately;
(3) playback: replace hydrochloride buffer with sodium hydrate buffer solution, repeat above operation.
Described footing residual chlorine detector is made up of pop one's head in (1), sensor (2), message handler (3), information-storing device (7), residual chlorine concentration three gear (6).
Described probe (1) directly can be deep in potable water and monitor footing residual chlorine, and changes into micro-signal, reaches sensor (2).
Described sensor (2) achieves and the micro-signal afferent message processor transmitted of popping one's head in is processed signal, and the development of evil in febrile disease becomes data-signal.
Described message handler (3) micro-signal imported into by sensor is transformed current signal and carries out comparing calculation with data in existing information-storing device (7) be processed into footing residual chlorine concentration in the potable water of probe monitors.
Relation between known footing residual chlorine concentration and current signal is stored in described information memory (7), be used to the working curve calculating relation between current known intensity and unknown footing residual chlorine concentration, the most always reach residual chlorine concentration three gear (6).
Described residual chlorine concentration three gear (6) specifically refers to: low-grade location is the chlorine residue≤100mg/L in water; Middle gear is the chlorine residue 100 ~ 250mg/L in water; High tap position is the chlorine residue alkali >=250mg/L in water.
The invention has the beneficial effects as follows: during detection, by free chlorine residual, footing residual chlorine separate detection, and being greater than 250mg/l basicity or 150mg/l acidity is unaffected when existing in water, monitoring the content of the footing residual chlorine in water quickly and accurately.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described:
Fig. 1 is front view of the present invention.
Fig. 2 is circuit diagram of the present invention.
In figure: 1, pop one's head in; 2, sensor; 3, message handler; 4, display screen; 5, switch; 6, residual chlorine concentration three gear; 7, information memory; 8, battery.
Embodiment
Detection mode
First with pure water to footing residual chlorine detector school zero, place for subsequent use; Get damping fluid again and be respectively the hydrochloric acid that concentration is 150mg/L, 250mg/L, 500mg/L, 1g/L, be dissolved in the chlorine residue water of 500-850mL and mix, use footing residual chlorine detector to detect immediately; Replace hydrochloride buffer with sodium hydrate buffer solution again, repeat above operation.
Application process
Monitor in probe placement potable water, and change into micro-signal and reach sensor, micro-signal afferent message processor is changed into again by sensor, data-signal is formed after signal is processed, afferent message storer again, and carry out comparing calculation with data in existing information-storing device, form the working curve of relation between current known intensity and unknown footing residual chlorine concentration, use footing residual chlorine detector to detect immediately.
Example 1
First with pure water to footing residual chlorine detector school zero, place for subsequent use; To get damping fluid be again concentration be 150mg/L, hydrochloric acid, be dissolved in the chlorine residue water of 850mL and mix, use footing residual chlorine detector to detect immediately; Replace hydrochloride buffer with sodium hydrate buffer solution again, concentration is 150mg/L NaOH, and be dissolved in the chlorine residue water of 850mL and mix, finally determining chemical combination state residual chlorine concentration in potable water is 1.09mg/L.
Example 2
First with pure water to footing residual chlorine detector school zero, place for subsequent use; To get damping fluid be again concentration be 250mg/L, hydrochloric acid, be dissolved in the chlorine residue water of 750mL and mix, use footing residual chlorine detector to detect immediately; Replace hydrochloride buffer with sodium hydrate buffer solution again, concentration is 250mg/L NaOH, and be dissolved in the chlorine residue water of 750mL and mix, finally determining chemical combination state residual chlorine concentration in potable water is 1.11mg/L.
Example 3
First with pure water to footing residual chlorine detector school zero, place for subsequent use; To get damping fluid be again concentration be 500mg/L, hydrochloric acid, be dissolved in the chlorine residue water of 500mL and mix, use footing residual chlorine detector to detect immediately; Replace hydrochloride buffer with sodium hydrate buffer solution again, concentration is 500mg/L NaOH, and be dissolved in the chlorine residue water of 500mL and mix, finally determining chemical combination state residual chlorine concentration in potable water is 1.24mg/L.
Claims (7)
1. a chemical combination state chlorine residue detection method in potable water, is characterized in that:
(1) return to zero: first with pure water to footing residual chlorine detector school zero, place for subsequent use;
(2) check: get damping fluid and be respectively the hydrochloric acid that concentration is 150mg/L, 250mg/L, 500mg/L, 1g/L, be dissolved in the chlorine residue water of 500-850mL and mix, use footing residual chlorine detector to detect immediately;
(3) playback: replace hydrochloride buffer with sodium hydrate buffer solution, repeat above operation.
2. chemical combination state chlorine residue detection method in a kind of potable water according to claim 1, is characterized in that: described footing residual chlorine detector is made up of pop one's head in (1), sensor (2), message handler (3), information-storing device (7), residual chlorine concentration three gear (6).
3. chemical combination state chlorine residue detection method in a kind of potable water according to claim 2, it is characterized in that: described probe (1) directly can be deep in potable water and monitor footing residual chlorine, and change into micro-signal, reach sensor (2).
4. chemical combination state chlorine residue detection method in a kind of potable water according to claim 2, is characterized in that: described sensor (2) achieves and the micro-signal afferent message processor transmitted of popping one's head in is processed signal, and the development of evil in febrile disease becomes data-signal.
5. chemical combination state chlorine residue detection method in a kind of potable water according to claim 2, is characterized in that: described message handler (3) micro-signal imported into by sensor is transformed current signal and carries out comparing calculation with data in existing information-storing device (7) be processed into footing residual chlorine concentration in the potable water of probe monitors.
6. chemical combination state chlorine residue detection method in a kind of potable water according to claim 2, it is characterized in that: in described information memory (7), store relation between known footing residual chlorine concentration and current signal, be used to the working curve calculating relation between current known intensity and unknown footing residual chlorine concentration, the most always reach residual chlorine concentration three gear (6).
7. chemical combination state chlorine residue detection method in a kind of potable water according to claim 2, is characterized in that: described residual chlorine concentration three gear (6) specifically refers to: low-grade location is the chlorine residue≤100mg/L in water; Middle gear is the chlorine residue 100 ~ 250mg/L in water; High tap position is the chlorine residue alkali >=250mg/L in water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510261017.7A CN105021785A (en) | 2015-05-20 | 2015-05-20 | Detection method for combined residual chlorine in drinking water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510261017.7A CN105021785A (en) | 2015-05-20 | 2015-05-20 | Detection method for combined residual chlorine in drinking water |
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| CN105021785A true CN105021785A (en) | 2015-11-04 |
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| CN201510261017.7A Pending CN105021785A (en) | 2015-05-20 | 2015-05-20 | Detection method for combined residual chlorine in drinking water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404506A (en) * | 2016-08-25 | 2017-02-15 | 深圳市有为环境科技有限公司 | Residual chlorine treating unit, and water quality biotoxicity detector |
| CN117524339A (en) * | 2024-01-04 | 2024-02-06 | 攀枝花市东区生态环境监测站 | Method and system for measuring residual chlorine |
Citations (6)
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| JP2000131276A (en) * | 1998-10-28 | 2000-05-12 | Masaaki Amano | Potable type residual chlorine meter |
| JP2000221165A (en) * | 1999-01-29 | 2000-08-11 | Toto Ltd | Apparatus for measuring concentration of residual chlorine |
| EP1526378A1 (en) * | 2003-10-22 | 2005-04-27 | Tanita Corporation | Residual chlorine meter |
| CN1940553A (en) * | 2005-09-29 | 2007-04-04 | 三浦工业株式会社 | Composition for measuring residual chlorine concentration |
| CN201495125U (en) * | 2009-07-31 | 2010-06-02 | 深圳市水务(集团)有限公司 | System for performing on-line monitoring on residual chlorine in fluid |
| CN203069546U (en) * | 2013-01-07 | 2013-07-17 | 北京农业智能装备技术研究中心 | Residual chlorine detection instrument and residual chlorine detection device |
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2015
- 2015-05-20 CN CN201510261017.7A patent/CN105021785A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000131276A (en) * | 1998-10-28 | 2000-05-12 | Masaaki Amano | Potable type residual chlorine meter |
| JP2000221165A (en) * | 1999-01-29 | 2000-08-11 | Toto Ltd | Apparatus for measuring concentration of residual chlorine |
| EP1526378A1 (en) * | 2003-10-22 | 2005-04-27 | Tanita Corporation | Residual chlorine meter |
| CN1940553A (en) * | 2005-09-29 | 2007-04-04 | 三浦工业株式会社 | Composition for measuring residual chlorine concentration |
| CN201495125U (en) * | 2009-07-31 | 2010-06-02 | 深圳市水务(集团)有限公司 | System for performing on-line monitoring on residual chlorine in fluid |
| CN203069546U (en) * | 2013-01-07 | 2013-07-17 | 北京农业智能装备技术研究中心 | Residual chlorine detection instrument and residual chlorine detection device |
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| 曾永权等: ""便携式余氯检测仪的研究"", 《国外电子测量技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404506A (en) * | 2016-08-25 | 2017-02-15 | 深圳市有为环境科技有限公司 | Residual chlorine treating unit, and water quality biotoxicity detector |
| CN117524339A (en) * | 2024-01-04 | 2024-02-06 | 攀枝花市东区生态环境监测站 | Method and system for measuring residual chlorine |
| CN117524339B (en) * | 2024-01-04 | 2024-03-19 | 攀枝花市东区生态环境监测站 | Method and system for measuring residual chlorine |
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