CN103496800A - Method for deeply treating high-concentration nitrogen-containing chemical wastewater - Google Patents
Method for deeply treating high-concentration nitrogen-containing chemical wastewater Download PDFInfo
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- CN103496800A CN103496800A CN201310467691.1A CN201310467691A CN103496800A CN 103496800 A CN103496800 A CN 103496800A CN 201310467691 A CN201310467691 A CN 201310467691A CN 103496800 A CN103496800 A CN 103496800A
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Abstract
The invention discloses a method for deeply treating high-concentration nitrogen-containing chemical wastewater. At the front stage of the method, normal biochemical treatment is adopted, so that wastewater flows through a polyfluoride material filter membrane with aperture of 0.01 mu m-15 mu m, a high polymer material ultra-filtration membrane filter equipment with aperture of 0.0001 mu m-0.01 mu m and reverse osmosis filter membrane filter equipment with aperture not greater than 0.0001 mu m in sequence after the normal biochemical treatment, and then is discharged. According to the method for deeply processing high-concentration nitrogen-containing chemical wastewater, membrane-integrated treatment equipment is adopted, and the three membranes are combined, so that water quality of treated outlet water is far better than water quality standard of recycling water as supplemental water of a circulating cooling system in the national standard, water production rate is improved by 5%-10% in comparison with the normal treatment process, reuse rate of practical maximum operating ultra-filtration water is over 95% and recovery rate of reverse osmosis equipment device is not less than 70%. Meanwhile, outlet water recovery rate of the system is improved, reuse index requirements are satisfied for final cyclic utilization, wastewater utilization rate is improved, and a purpose of changing waste into things of value is achieved.
Description
Technical field
The invention belongs to the biochemical technology field, particularly relate to the method for the nitrogenous wastewater from chemical industry of a kind of advanced treatment high density.
Background technology
Traditional sewerage advanced treatment process increases as subsequent treatment process such as filtration, absorption, coagulating sedimentation and sterilizations and forms after biochemical treatment, and its process combination form can be summarized as several as follows: secondary effluent-sand filtration-sterilization; Secondary effluent-coagulation-precipitation-filtration-sterilization; Secondary effluent-coagulation-precipitation-filtration-charcoal absorption-sterilization (ultraviolet, chlorine, ozone or dioxide peroxide) etc.
Traditional sewerage advanced treatment process, obviously exist that efficiency is lower, cost is higher, cause secondary pollution problems.In view of current membrane separation technique has, processing efficiency is high, technical process is short, easy to control, use is flexible, membrane sepn water factory floor space is few, produce the characteristics such as practicable automatization, can obtain in the past that conventional processes is that never reach, reliable and stable clean water quality, become gradually the main flow in current advanced treatment of wastewater, regeneration market.
Summary of the invention
The method that the purpose of this invention is to provide the nitrogenous wastewater from chemical industry of a kind of advanced treatment high density, thus solve efficiency that traditional technology exists than low, cost than high, floor space large, cause secondary pollution problems.
Adopt following technical scheme: the method for the nitrogenous wastewater from chemical industry of a kind of advanced treatment high density for this reason, its leading portion adopts routine biochemistry to process, it is characterized in that: waste water is after routine biochemistry is processed, flow through aperture successively in the poly-fluorine material filter membrane of 0.01 μ m ~ 15 μ m, the macromolecular material ultrafiltration membrance filter equipment of aperture 0.0001 μ m ~ 0.01 μ m and the reverse osmosis filter membrane filter plant of aperture≤0.0001 μ m, then water outlet.
The present invention adopts the integrated treatment facility of film, combination by three kinds of films, make effluent quality after processing be far superior in GB reuse water as circulating cooling system supplementary feed water quality standard, producing water ratio also on year-on-year basis conventional treatment process improved 5% ~ 10%, the highest operation ultrafiltration of reality reusing rate reaches more than 95%, the reverse osmosis equipment water rate of recovery >=70%.Improve the water outlet rate of recovery of system simultaneously, meet the reuse index request, final recycle, improve the water reuse rate, reaches the target turned waste into wealth.
The accompanying drawing explanation
Fig. 1 is case process schema of the present invention.
Embodiment
Below implementing is the test run(s) that the present invention does in certain waste water treatment engineering, and this test is blocking test, and nonspecific crowd can not contact, understand process of the test.
As shown in Figure 1, take certain water treatment scene, coke-oven plant is example, and the design flooding velocity is 30m
3/ h, its water quality situation is as follows: pH 6～9, COD
cr≤ 400mg/L, NH
3-N≤15mg/L, oil≤8.0mg/L, total hardness is (with CaCO
3meter)≤600mg/L, total alkalinity is (with CaCO
3meter)≤500mg/L, specific conductivity≤8000 us/cm, volatile phenol≤0.5mg/L total cyanide≤0.5mg/L, TN≤60mg/L, SS≤70mg/L.
Flow through aperture successively in the poly-fluorine material filter membrane of 0.01 μ m ~ 15 μ m, the macromolecular material ultrafiltration membrance filter equipment of aperture 0.0001 μ m ~ 0.01 μ m and the reverse osmosis filter membrane filter plant of aperture≤0.0001 μ m, then water outlet
Sewage is flowed through in proper order and is gathered fluorine material filter membrane (PM film) equipment pond, intermediate pool, the former pond of macromolecular material ultrafiltration (UF), cartridge filter, macromolecular material ultrafiltration apparatus, macromolecular material ultrafiltration product pond, cartridge filter, reverse osmosis filter membrane (RO film) filter plant, then clear water enters reverse osmosis filter and produces pond and use for production cycle, concentrated water drainage enters reverse osmosis and filters dense pond, enters appointed place and processes.
Wherein, poly-fluorine material filter membrane arranges mainly for the suspended substance such as the COD in water, colourity and macrobead, organic impurity, thereby has guaranteed that its effluent quality meets the requirement of rear end ultrafiltration and reverse osmosis membrane.Through the comprehensive treating process of this technology, make wastewater effluent water quality as follows: pH 6～9, COD
cr≤ 60mg/L, NH
3-N≤0.5mg/L, oil≤0.5mg/L, total hardness is (with CaCO
3meter)≤400mg/L, total alkalinity is (with CaCO
3meter)≤500mg/L, specific conductivity≤6500 us/cm, volatile phenol≤0.5mg/L total cyanide≤0.5mg/L, TN≤40mg/L, SS≤10mg/L.
Through the high efficiency filter effect of poly-fluorine material filter membrane, COD
cr, SS and colourity reaches the water inlet requirement of advanced treatment unit, enters the macromolecular material ultrafiltration apparatus.This equipment consists of the former pond of macromolecular material ultrafiltration, macromolecular material ultrafiltration body apparatus, macromolecular material ultrafiltration product pond, macromolecular material hyperfiltration reverse-rinsing and cleaning system, macromolecular material hyperfiltration reverse-rinsing medicine system, several large parts of macromolecular material ultrafiltration working shaft, can be under certain pressure, larger molecular organics, colloid and the microorganisms such as the suspended substance in trap water, albumen, reach the purpose of purification separation.
The poly-fluorine material filter membrane water outlet ultrafiltration apparatus of making a gift to someone, the ultrafiltration membrane elements adopted in the ultrafiltration body apparatus, be to adopt international advanced membrane process exploitation to form, the termination sealing adopts the PU resin material that can not ftracture, can not leak.Film influent side pressure in service is 0.2Mpa.Its effluent quality is: SDI :≤3, and turbidity≤0.1NTU, residual chlorine≤0.1mg/L, pH 6-9, total iron≤0.1mg/L, system is produced the tax rate >=90%.The ultrafiltration apparatus water outlet enters reverse osmosis equipment, the task that it has been born main desalination and has removed COD, the principle of utilizing reverse osmosis membrane can hold back dissolve inorganic salts in the small organic molecule such as carbohydrate in waste water, albumen, microorganism secretion thing and waste water etc. reaches produces the water target, and it produces the tax rate >=70%.Final outflow water water quality is as follows: pH 6.5～8.5, COD
cr≤ 30mg/L, NH
3-N≤0.5mg/L, oil is about 0, and total hardness is (with CaCO
3meter)≤250mg/L, total alkalinity is (with CaCO
3meter)≤110mg/L, specific conductivity≤600 us/cm, volatile phenol and total cyanide are about 0, TN≤40mg/L, SS≤5mg/L, turbidity≤2NTU.This technological design water outlet is better than or meets in GB50335-2002 reuse water as the water quality standard requirement of recirculated cooling water supplementary feed.
Claims (1)
1. the method for the nitrogenous wastewater from chemical industry of advanced treatment high density, its leading portion adopts routine biochemistry to process, it is characterized in that: waste water is after routine biochemistry is processed, flow through aperture successively in the poly-fluorine material filter membrane of 0.01 μ m ~ 15 μ m, the macromolecular material ultrafiltration membrance filter equipment of aperture 0.0001 μ m ~ 0.01 μ m and the reverse osmosis filter membrane filter plant of aperture≤0.0001 μ m, then water outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310467691.1A CN103496800A (en) | 2013-10-10 | 2013-10-10 | Method for deeply treating high-concentration nitrogen-containing chemical wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310467691.1A CN103496800A (en) | 2013-10-10 | 2013-10-10 | Method for deeply treating high-concentration nitrogen-containing chemical wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103496800A true CN103496800A (en) | 2014-01-08 |
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ID=49862093
Family Applications (1)
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| CN201310467691.1A Pending CN103496800A (en) | 2013-10-10 | 2013-10-10 | Method for deeply treating high-concentration nitrogen-containing chemical wastewater |
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| JPH03270800A (en) * | 1990-03-20 | 1991-12-02 | Ebara Infilco Co Ltd | Treatment of organic sewage |
| JPH0651199B2 (en) * | 1989-08-09 | 1994-07-06 | 荏原インフイルコ株式会社 | Organic wastewater treatment method |
| CN101186418A (en) * | 2007-12-13 | 2008-05-28 | 金东纸业(江苏)有限公司 | Method for reclaiming and utilizing paper-making industrial waste water |
| CN201240952Y (en) * | 2008-07-21 | 2009-05-20 | 张博 | Super-filtration reverse osmosis advanced treatment apparatus of coking waste water |
| CN101962246A (en) * | 2009-07-24 | 2011-02-02 | 中国石油化工股份有限公司 | Method for treating and recycling MTO process wastewater |
| CN102001786A (en) * | 2010-10-22 | 2011-04-06 | 中国瑞林工程技术有限公司 | New high-nitrogen organic sewage treatment biochemical denitrification process |
| CN102010112A (en) * | 2010-09-27 | 2011-04-13 | 南京宏博环保实业有限公司 | Method for treating livestock wastes |
| CN102295377A (en) * | 2010-06-28 | 2011-12-28 | 中国石油化工股份有限公司 | Advanced treatment and reuse method of wastewater in olefin polymerization catalyst production |
| CN103304049A (en) * | 2012-03-06 | 2013-09-18 | 上海宝钢化工有限公司 | Coking wastewater recycling treatment system and method |
-
2013
- 2013-10-10 CN CN201310467691.1A patent/CN103496800A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0651199B2 (en) * | 1989-08-09 | 1994-07-06 | 荏原インフイルコ株式会社 | Organic wastewater treatment method |
| JPH03270800A (en) * | 1990-03-20 | 1991-12-02 | Ebara Infilco Co Ltd | Treatment of organic sewage |
| CN101186418A (en) * | 2007-12-13 | 2008-05-28 | 金东纸业(江苏)有限公司 | Method for reclaiming and utilizing paper-making industrial waste water |
| CN201240952Y (en) * | 2008-07-21 | 2009-05-20 | 张博 | Super-filtration reverse osmosis advanced treatment apparatus of coking waste water |
| CN101962246A (en) * | 2009-07-24 | 2011-02-02 | 中国石油化工股份有限公司 | Method for treating and recycling MTO process wastewater |
| CN102295377A (en) * | 2010-06-28 | 2011-12-28 | 中国石油化工股份有限公司 | Advanced treatment and reuse method of wastewater in olefin polymerization catalyst production |
| CN102010112A (en) * | 2010-09-27 | 2011-04-13 | 南京宏博环保实业有限公司 | Method for treating livestock wastes |
| CN102001786A (en) * | 2010-10-22 | 2011-04-06 | 中国瑞林工程技术有限公司 | New high-nitrogen organic sewage treatment biochemical denitrification process |
| CN103304049A (en) * | 2012-03-06 | 2013-09-18 | 上海宝钢化工有限公司 | Coking wastewater recycling treatment system and method |
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Application publication date: 20140108 |