CN102040298A - Water treatment method for reducing chlorpyrifos pollution - Google Patents
Water treatment method for reducing chlorpyrifos pollution Download PDFInfo
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- CN102040298A CN102040298A CN 201010547955 CN201010547955A CN102040298A CN 102040298 A CN102040298 A CN 102040298A CN 201010547955 CN201010547955 CN 201010547955 CN 201010547955 A CN201010547955 A CN 201010547955A CN 102040298 A CN102040298 A CN 102040298A
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Abstract
The invention discloses a water treatment method for reducing chlorpyrifos pollution, relates to the water treatment method, and solves the problems of blockage of a filter tank and low removal efficiency which are caused by an oxidation method or a filter process for removing chlorpyrifos in water by using powdered activated carbon. The method comprises the following steps of: 1, adding wood powdered activated carbon emulsion into a water intake of water to be treated to keep the wood powdered activated carbon content in the water at 10 to 60mg/L; 2, adding a polyaluminium chloride coagulant after the water treated in the step 1 passes through a stable pressure well and before the water passes through a reaction tank; and 3, sterilizing the water which is treated in the step 2 and passes through the reaction tank, a sedimentation tank and a sand filter tank to obtain outlet water. By the method, the chlorpyrifos in the water (the removal rate of the chlorpyrifos in the water is more than 89 percent) can be effectively removed; meanwhile, the problems of blockage of the filter tank and floating residues in the water which are caused by the adsorbed powdered activated carbon in the filter process are solved, and the quality of the outlet water is improved.
Description
Technical field
The present invention relates to a kind of water treatment method.
Background technology
Chlorpyrifos 94 is a kind of being extensive use of and the organophosphorus pesticide of alternative acephatemet, the contour malicious agricultural chemicals of thiophos, and is exactly whether the agricultural chemicals of this high-efficiency low-toxicity produces long-time effect to human body, particularly to children's influence, just is being subjected to common concern both domestic and external at present.In its a large amount of use, because the potentially dangerous that has the excessive use of agricultural chemicals and cause agricultural chemicals to reveal because of shipping accident, Chlorpyrifos 94 has become one of important risk pollution substance of urban water sources burst water pollution.In recent years, along with increasing the weight of that source water pollutes, many water factories have increased pre-treatment or advanced treatment link, strengthened processing power, but these water factories are generally by reply persistence, source quality situation design conventional, little pollution, but not the polluted water of paroxysmal, special unmanageable, high density.The burst Chlorpyrifos 94 pollutes characteristics such as having difficult, short period of time high density, and in general existing water factory process facility is difficult to tackle.At present, the major measure of taking is polluted in the burst of reply organism Powdered Activated Carbon absorption and high-level oxidation technology.Adopt the method for advanced oxidation, with strong oxidizer under the condition that catalyzer exists with the Chlorpyrifos 94 oxidation, but, therefore adopt the method for advanced oxidation or catalyzed oxidation limited to the removal effect of Chlorpyrifos 94 because it is stronger to contain the resistance of oxidation of substituent phenyl ring; Adopt Powdered Activated Carbon to remove the dead tick of water intoxication and easily cause the obstruction in filter tank in filtration process, and that Powdered Activated Carbon has in water is floating, can not be fully effectively contact with Chlorpyrifos 94 in the water, removal efficient is low.
Summary of the invention
The objective of the invention is for the method that solves oxidation or adopt Powdered Activated Carbon remove the dead tick of water intoxication in filtration process, cause the filter tank obstruction, remove inefficient problem, a kind of water treatment method that Chlorpyrifos 94 pollutes that reduces is provided.
The water treatment method step that the present invention reduces the Chlorpyrifos 94 pollution is as follows: the suspension wooden powder gac emulsion of one, wooden powder's gac water being made homogeneous, add wooden powder's gac emulsion to pending water intake place then, the content that makes wooden powder's gac in the water is 10mg/L～60mg/L, wooden powder's gac emulsion is mixed with water and is imported in the hydraulic pipe-line with flow, and wooden powder's gac and water mobile duration of contact is 2h; Two, the water of step 1 processing passes through pressure stabilizing well and reaction tank respectively, is adding the polymerize aluminum chloride coagulating agent through the dosage according to 30mg/L before the reaction tank; Three, the water that will handle through step 2 promptly gets water outlet after reaction tank, settling tank, sand filter and sterilization; The granularity of the gac of wooden powder described in the step 1 is 150 orders～250 orders.
The present invention can remove the Chlorpyrifos 94 (clearance of the dead tick of water intoxication is more than 89%) in the water effectively, the filter tank of having avoided the Powdered Activated Carbon after the absorption to cause in filtration process is simultaneously stopped up or is penetrated and has floating residual in water outlet, thereby guarantee the qualified of effluent water quality index, have the incomparable superiority of existing technology; (the Chlorpyrifos 94 content of water outlet is 14.12～18.67 μ g/L in that higher guarantee has been arranged aspect the water supply quality security than existing pre-throwing chlorine technology to adopt the water technology of throwing PAC in advance, be lower than national drinking water standard), strengthened in the water permanganate index simultaneously to the removal effect of aromatics, natural organic matter (NOM), made the water quality of water outlet be more suitable for the people and drink.
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: the water treatment method step that reduces the Chlorpyrifos 94 pollution in the present embodiment is as follows: the suspension wooden powder gac emulsion of one, wooden powder's gac water being made homogeneous, add wooden powder's gac emulsion to pending water intake place then, the content that makes wooden powder's gac in the water is 10mg/L～60mg/L, wooden powder's gac emulsion is mixed with water and is imported in the hydraulic pipe-line with flow, and wooden powder's gac and water mobile duration of contact is 2h; Two, the water of step 1 processing passes through pressure stabilizing well and reaction tank respectively, is adding the polymerize aluminum chloride coagulating agent through the dosage according to 30mg/L before the reaction tank; Three, the water that will handle through step 2 promptly gets water outlet (Chlorpyrifos 94 content is 14.12 μ g/L～18.67 μ g/L) after reaction tank, settling tank, sand filter and sterilization.
Wooden powder's gac described in the present embodiment is commercial dry type PAC, adopt the wet type dosing method at the pending water intake of waterhead area place, utilize the pending water intake of waterhead area place to the time of delivery of water purification plant finish PAC in water with thorough mixing and the absorption of Chlorpyrifos 94, after the water that adds PAC and coagulating agent enters reaction tank, PAC can be used as the skeleton of coagulation flco again, be beneficial to the formation of flco, pass through water outlet behind follow-up precipitation (wooden powder's gac through precipitation remove), filtration and the sterilizing part again.
Embodiment two: the water treatment method that reduces the Chlorpyrifos 94 pollution in the present embodiment is as follows: one, wooden powder's gac water is made wooden powder's gac emulsion, add wooden powder's gac emulsion to pending water intake place then, the content that makes wooden powder's gac in the water is 10mg/L, wooden powder's gac emulsion is mixed with water and is imported in the hydraulic pipe-line with flow, wooden powder's gac and water duration of contact of flowing is 2h; Two, the water of step 1 processing passes through pressure stabilizing well and reaction tank respectively, adds the polymerize aluminum chloride coagulating agent through the dosage according to 30mg/L before the reaction tank; Three, the water that will handle through step 2 promptly gets water outlet (Chlorpyrifos 94 content is 17.42 μ g/L) after reaction tank, settling tank, sand filter and sterilization; The dead tick content of water intoxication described in the step 1 is 150 μ g/L (the dead tick content of water intoxication exceeds 5 times of the national drinking water standard value upper limit 30 μ g/L).
Embodiment three: the water treatment method that reduces the Chlorpyrifos 94 pollution in the present embodiment is as follows: one, wooden powder's gac water is made wooden powder's gac emulsion, add wooden powder's gac emulsion to pending water intake place then, the content that makes wooden powder's gac in the water is 20mg/L., wooden powder's gac emulsion is mixed with water and is imported in the hydraulic pipe-line with flow, wooden powder's gac and water duration of contact of flowing is 2h; Two, the water of step 1 processing passes through pressure stabilizing well and reaction tank respectively, adds the polymerize aluminum chloride coagulating agent through the dosage according to 30mg/L before the reaction tank; Three, the water that will handle through step 2 promptly gets water outlet (Chlorpyrifos 94 content is 15.68 μ g/L) after reaction tank, settling tank, sand filter and sterilization; The dead tick content of water intoxication described in the step 1 is 300 μ g/L (the dead tick content of water intoxication exceeds 10 times of the national drinking water standard value upper limit 30 μ g/L).
Embodiment four: the water treatment method that reduces the Chlorpyrifos 94 pollution in the present embodiment is as follows: one, wooden powder's gac water is made wooden powder's gac emulsion, add wooden powder's gac emulsion to pending water intake place then, the content that makes wooden powder's gac in the water is 30mg/L, wooden powder's gac emulsion is mixed with water and is imported in the hydraulic pipe-line with flow, and wooden powder's gac and water mobile duration of contact is 2h; Two, the water of step 1 processing passes through pressure stabilizing well and reaction tank respectively, adds the polymerize aluminum chloride coagulating agent through the dosage according to 30mg/L before the reaction tank; Three, the water that will handle through step 2 promptly gets water outlet (Chlorpyrifos 94 content is 14.12 μ g/L) after reaction tank, settling tank, sand filter and sterilization; The dead tick content of water intoxication described in the step 1 is 600 μ g/L (the dead tick content of water intoxication exceeds 20 times of the national drinking water standard value upper limit 30 μ g/L).
Embodiment five: the water treatment method that reduces the Chlorpyrifos 94 pollution in the present embodiment is as follows: one, wooden powder's gac water is made wooden powder's gac emulsion, add wooden powder's gac emulsion to pending water intake place then, the content that makes wooden powder's gac in the water is 40mg/L, wooden powder's gac emulsion is mixed with water and is imported in the hydraulic pipe-line with flow, and wooden powder's gac and water mobile duration of contact is 2h; Two, the water of step 1 processing passes through pressure stabilizing well and reaction tank respectively, adds the polymerize aluminum chloride coagulating agent through the dosage according to 30mg/L before the reaction tank; Three, the water that will handle through step 2 promptly gets water outlet (Chlorpyrifos 94 content is 14.75 μ g/L) after reaction tank, settling tank, sand filter and sterilization; The dead tick content of water intoxication described in the step 1 is 900 μ g/L (the dead tick content of water intoxication exceeds 30 times of the national drinking water standard value upper limit 30 μ g/L).
Embodiment six: the water treatment method that reduces the Chlorpyrifos 94 pollution in the present embodiment is as follows: one, wooden powder's gac water is made wooden powder's gac emulsion, add wooden powder's gac emulsion to pending water intake place then, the content that makes wooden powder's gac in the water is 40mg/L, wooden powder's gac emulsion is mixed with water and is imported in the hydraulic pipe-line with flow, and wooden powder's gac and water mobile duration of contact is 2h; Two, the water of step 1 processing passes through pressure stabilizing well and reaction tank respectively, adds the polymerize aluminum chloride coagulating agent through the dosage according to 30mg/L before the reaction tank; Three, the water that will handle through step 2 promptly gets water outlet (Chlorpyrifos 94 content is 17.47 μ g/L) after reaction tank, settling tank, sand filter and sterilization; The dead tick content of water intoxication described in the step 1 is 1200 μ g/L (the dead tick content of water intoxication exceeds 40 times of the national drinking water standard value upper limit 30 μ g/L).
Embodiment seven: the water treatment method that reduces the Chlorpyrifos 94 pollution in the present embodiment is as follows: one, wooden powder's gac water is made wooden powder's gac emulsion, add wooden powder's gac emulsion to pending water intake place then, the content that makes wooden powder's gac in the water is 60mg/L, wooden powder's gac emulsion is mixed with water and is imported in the hydraulic pipe-line with flow, and wooden powder's gac and water mobile duration of contact is 2h; Two, the water of step 1 processing passes through pressure stabilizing well and reaction tank respectively, adds the polymerize aluminum chloride coagulating agent through the dosage according to 30mg/L before the reaction tank; Three, the water that will handle through step 2 promptly gets water outlet (Chlorpyrifos 94 content is 18.67 μ g/L) after reaction tank, settling tank, sand filter and sterilization; The dead tick content of water intoxication described in the step 1 is 1500 μ g/L (the dead tick content of water intoxication exceeds 50 times of the national drinking water standard value upper limit 30 μ g/L).
Claims (2)
1. reduce the water treatment method that Chlorpyrifos 94 pollutes, it is as follows to it is characterized in that reducing the water treatment method step that Chlorpyrifos 94 pollutes: the suspension wooden powder gac emulsion of one, wooden powder's gac water being made homogeneous, add wooden powder's gac emulsion to pending water intake place then, the content that makes wooden powder's gac in the water is 10mg/L～60mg/L, wooden powder's gac emulsion is mixed with water and is imported in the hydraulic pipe-line with flow, and wooden powder's gac and water mobile duration of contact is 2h; Two, the water of step 1 processing passes through pressure stabilizing well and reaction tank respectively, is adding the polymerize aluminum chloride coagulating agent through the dosage according to 30mg/L before the reaction tank; Three, the water that will handle through step 2 promptly gets water outlet after reaction tank, settling tank, sand filter and sterilization.
2. the water treatment method that minimizing Chlorpyrifos 94 according to claim 1 pollutes, the granularity that it is characterized in that the gac of wooden powder described in the step 1 is 150 orders～250 orders.
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| CN 201010547955 CN102040298A (en) | 2010-11-17 | 2010-11-17 | Water treatment method for reducing chlorpyrifos pollution |
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| CN 201010547955 CN102040298A (en) | 2010-11-17 | 2010-11-17 | Water treatment method for reducing chlorpyrifos pollution |
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| CN102040298A true CN102040298A (en) | 2011-05-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102603094A (en) * | 2011-12-14 | 2012-07-25 | 湖北犇星农化有限责任公司 | Method for treating waste water during production of chlorpyrifos |
| CN102701300A (en) * | 2012-06-21 | 2012-10-03 | 江苏省环境科学研究院 | Compound reagent for removing chlorpyrifos in paddy-field drainage |
| CN107176766A (en) * | 2017-07-18 | 2017-09-19 | 马鞍山中创环保科技有限公司 | A kind of method of the novel nano photocatalyst treatment waste water of chlopyrifos containing high phosphorus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1994927A (en) * | 2006-12-19 | 2007-07-11 | 哈尔滨工业大学 | Method for removing nitrobenzene from original water adopting powder active carbon and coagulant |
-
2010
- 2010-11-17 CN CN 201010547955 patent/CN102040298A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1994927A (en) * | 2006-12-19 | 2007-07-11 | 哈尔滨工业大学 | Method for removing nitrobenzene from original water adopting powder active carbon and coagulant |
Non-Patent Citations (1)
| Title |
|---|
| > 20100430 李鑫等 水厂突发毒死蜱污染的应急处理工艺研究 第4卷, 第2期 2 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102603094A (en) * | 2011-12-14 | 2012-07-25 | 湖北犇星农化有限责任公司 | Method for treating waste water during production of chlorpyrifos |
| CN102603094B (en) * | 2011-12-14 | 2013-06-19 | 湖北犇星农化有限责任公司 | Method for treating waste water during production of chlorpyrifos |
| CN102701300A (en) * | 2012-06-21 | 2012-10-03 | 江苏省环境科学研究院 | Compound reagent for removing chlorpyrifos in paddy-field drainage |
| CN102701300B (en) * | 2012-06-21 | 2014-01-01 | 江苏省环境科学研究院 | Compound reagent for removing chlorpyrifos in paddy-field drainage and usage method |
| CN107176766A (en) * | 2017-07-18 | 2017-09-19 | 马鞍山中创环保科技有限公司 | A kind of method of the novel nano photocatalyst treatment waste water of chlopyrifos containing high phosphorus |
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Application publication date: 20110504 |