CN101519234A - Sewage dephosphorization method - Google Patents
Sewage dephosphorization method Download PDFInfo
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- CN101519234A CN101519234A CN200910130817A CN200910130817A CN101519234A CN 101519234 A CN101519234 A CN 101519234A CN 200910130817 A CN200910130817 A CN 200910130817A CN 200910130817 A CN200910130817 A CN 200910130817A CN 101519234 A CN101519234 A CN 101519234A
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- sewage dephosphorization
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Abstract
The invention discloses a sewage dephosphorization method which electrolyzes sewage by arranging an electrolysis unit in the sewage, and at least one electrode in a positive and negative electrode group of the electrolysis unit is an iron electrode. The dephosphorization method has the advantages of short flow path, small occupied area and low running expense, can be used by combining with the prior sewage processing technology, can satisfy the sewage discharge standard which becomes restrict increasingly and is suitable for dephosphorization of domestic sewage and industrial sewage.
Description
Technical field
The invention belongs to sewage water treatment method, be specifically related to a kind of sewage dephosphorization method.
Background technology
Along with the development of society, China faces increasingly serious ecological environmental pollution, and body eutrophication is serious day by day, and China is to the control of phosphorus discharging also increasingly stringent for this reason.In order to reduce the discharging of phosphorus, the main at present phosphorus removing method that adopts of the existing sewage work of China has biological phosphate-eliminating and chemical dephosphorization.
Biological phosphate-eliminating is to make polyP bacteria carry out enrichment to phosphorus to enter mud, by spoil disposal phosphorus is removed from sewage by building certain ecotope.Biological phosphate-eliminating is in order to build the growing environment of polyP bacteria, and the existence investment is big, flow process is complicated, operation stability is poor, often is difficult to the operating performance that reaches good during actual motion.
Chemical dephosphorization is to add chemical agent in sewage, reacts to generate to precipitate by chemical agent and phosphorus phosphorus is removed from sewage.Chemical method dephosphorization running cost height, the chemical sludge of generation need further to handle, otherwise may cause secondary pollution.
Summary of the invention
The objective of the invention is the problem that exists at existing phosphorus removing method, provide a kind of simple and easy effectively, sewage dephosphorization method that running cost is low.
Sewage dephosphorization method of the present invention is, (can in the equipment of various sewage processes such as anaerobic pond, anoxic pond, Aerobic Pond, trickling filter) be provided with electrolyzer sewage carried out electrolysis in sewage, and having an electrode in the positive and negative electrode group in the described electrolyzer at least is the ferroelectric utmost point.
An electrode is the ferroelectric utmost point in the described positive and negative electrode group, and another electrode can adopt noble electrode.
Described ferroelectric extremely can be iron plate, iron plane flower, iron filings.
Described noble electrode can adopt materials such as graphite, titanium.
Described positive and negative electrode group can be single group or many groups.
The power supply of described electrolyzer can adopt direct current or alternating-current, and power source voltage is 1-100 volts, and electric current is 0.01-10 amperes.
When described electrolyzer adopted direct current, positive electrode adopted the ferroelectric utmost point.
When described electrolyzer adopted alternating-current, positive electrode and negative potential all adopted the ferroelectric utmost point.
The leading-out end of the described ferroelectric utmost point can adopt inert material as graphite.
Principle of work of the present invention:
Adding under the weak electric field, making the ferroelectric utmost point that is immersed in the sewage produce disassociation, generating ferrous ion Fe
2 +, at Fe
2+Iron ion Fe with oxidized generation
3+Acting in conjunction under, combine insoluble materials such as generating the phosphoric acid molysite with phosphate anion in the sewage, finally generate precipitation and from sewage, remove.
Phosphorus removing method of the present invention has the advantage that flow process is short, floor space is little, working cost is low, can be used in combination with existing sewage treatment process, can satisfy the sewage drainage standard of increasingly stringent, is applicable to the dephosphorization of sanitary sewage and industrial sewage, PO
4 3-The clearance of-P is 60-95%.
Description of drawings
Accompanying drawing is the electrolyzer synoptic diagram that the inventive method is used.
Embodiment
See accompanying drawing, contain PO at Yuan Shui
4 3--P concentration is in the sewage lagoon 1 of 9.2～10.5mg/l, the electrolyzer that setting is made of pair of electrodes 2,5 and direct supply 3, anode is for adopting the ferroelectric utmost point 5 of iron plane flower, the leading-out end 4 of the ferroelectric utmost point 5 adopts graphite, negative electrode is a Graphite Electrodes 2, electrode applies 3 volts of volts DSs, electric current 10mA, dwell time of sewage 30 minutes.Treatment effect: water outlet PO
4 3--P concentration is 0.36～0.52mg/l, PO
4 3-The clearance of-P is 60-90%.
Claims (9)
1, a kind of sewage dephosphorization method is characterized in that being provided with electrolyzer sewage is carried out electrolysis in sewage, having an electrode in the positive and negative electrode group in the described electrolyzer at least is the ferroelectric utmost point.
2, according to right 1 described sewage dephosphorization method, it is characterized in that an electrode is the ferroelectric utmost point in the described positive and negative electrode group, another electrode can adopt noble electrode.
3, according to right 2 described sewage dephosphorization methods, it is characterized in that described ferroelectric extremely can be iron plate, iron plane flower, iron filings.
4,, it is characterized in that described noble electrode adopts graphite, titanium material according to right 2 described sewage dephosphorization methods.
5,, it is characterized in that described positive and negative electrode group can be single group or many groups according to right 1 described sewage dephosphorization method.
6, according to right 1 described sewage dephosphorization method, it is characterized in that the power supply of described electrolyzer can adopt direct current or alternating-current, power source voltage is 1-100 volts, electric current is 0.01-10 amperes.
7, according to right 6 described sewage dephosphorization methods, when it is characterized in that described electrolyzer adopts direct current, positive electrode adopts the ferroelectric utmost point.
8, according to right 6 described sewage dephosphorization methods, when it is characterized in that described electrolyzer adopts alternating-current, positive electrode and negative potential all adopt the ferroelectric utmost point.
9,, it is characterized in that the leading-out end of the described ferroelectric utmost point adopts inert material according to right 1 described sewage dephosphorization method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910130817A CN101519234A (en) | 2009-04-16 | 2009-04-16 | Sewage dephosphorization method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910130817A CN101519234A (en) | 2009-04-16 | 2009-04-16 | Sewage dephosphorization method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101519234A true CN101519234A (en) | 2009-09-02 |
Family
ID=41080058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910130817A Pending CN101519234A (en) | 2009-04-16 | 2009-04-16 | Sewage dephosphorization method |
Country Status (1)
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| CN (1) | CN101519234A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102336471A (en) * | 2011-09-08 | 2012-02-01 | 大连理工大学 | Method for treating waste water containing salt through coupling of electrodes and anaerobic organisms |
| CN103332768A (en) * | 2013-06-27 | 2013-10-02 | 同济大学 | Method for synchronously removing arsenite and arsenate from water |
| CN109879522A (en) * | 2018-12-06 | 2019-06-14 | 南方创业（天津）科技发展有限公司 | It is a kind of for handling the integrated stabilization pond equipment and its treatment process of distributed sewage |
| CN113716659A (en) * | 2021-11-02 | 2021-11-30 | 深圳市环境科学研究院 | Method and system for recovering phosphorus from acidic chemical nickel plating waste liquid |
| CN114368825A (en) * | 2022-01-19 | 2022-04-19 | 重庆融极环保工程有限公司 | Sewage treatment device |
-
2009
- 2009-04-16 CN CN200910130817A patent/CN101519234A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102336471A (en) * | 2011-09-08 | 2012-02-01 | 大连理工大学 | Method for treating waste water containing salt through coupling of electrodes and anaerobic organisms |
| CN103332768A (en) * | 2013-06-27 | 2013-10-02 | 同济大学 | Method for synchronously removing arsenite and arsenate from water |
| CN109879522A (en) * | 2018-12-06 | 2019-06-14 | 南方创业（天津）科技发展有限公司 | It is a kind of for handling the integrated stabilization pond equipment and its treatment process of distributed sewage |
| CN113716659A (en) * | 2021-11-02 | 2021-11-30 | 深圳市环境科学研究院 | Method and system for recovering phosphorus from acidic chemical nickel plating waste liquid |
| CN114368825A (en) * | 2022-01-19 | 2022-04-19 | 重庆融极环保工程有限公司 | Sewage treatment device |
| CN114368825B (en) * | 2022-01-19 | 2024-10-29 | 重庆融极环保工程有限公司 | Sewage treatment device |
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Open date: 20090902 |