CN103172224B - Surface treatment waste water reuse treatment process - Google Patents
Surface treatment waste water reuse treatment process Download PDFInfo
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- CN103172224B CN103172224B CN201310126115.0A CN201310126115A CN103172224B CN 103172224 B CN103172224 B CN 103172224B CN 201310126115 A CN201310126115 A CN 201310126115A CN 103172224 B CN103172224 B CN 103172224B
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Abstract
The invention discloses a kind of surface treatment waste water reuse treatment process, in the coagulation basin of rapid stirring, add sodium hydroxide is adjusted to pH value between 7-8, and add coagulant polymeric aluminium chloride, flocculation agent polyacrylamide is added again in the flocculation basin of low rate mixing, waste water in flocculation basin flows in settling tank and precipitates, settling tank water outlet flows directly in biochemistry pool carries out biochemical treatment, biochemistry pool is divided into the oxygen compatibility pool of leading portion and the Aerobic Pond of back segment, Aerobic Pond water outlet flows in MBR membrane cisterna, by the filteration of MBR film, the water handled well is separated and flows in reuse pool, microorganism and pollution substance are then stayed in MBR membrane cisterna, dope in MBR membrane cisterna is returned Aerobic Pond inlet end by recycling reflux pump, after process of the present invention, water outlet can reach Treated sewage reusing standard, solve surface treatment waste water Treatment for Reuse costly, the problem of reuse difficulty up to standard.
Description
Technical field
The invention belongs to the technical field of waste water processing of environmental engineering, be specifically related to a kind of reuse treatment process of surface treatment waste water.
Background technology
Along with industrial expansion and lake eutrophication problem are more and more serious, Taihu Lake basin requires more and more stricter to discharge of wastewater, for new project of building, will there be the waste water recycling amount of about 40-80 in each enterprise of common demands.Conventional surface process wastewater recycling treatment process flow process as shown in Figure 1, be made up of equalizing tank, the first coagulation basin, the first flocculation basin, settling tank, oxygen compatibility pool, Aerobic Pond, the second coagulation basin, the second flocculation basin, second pond, intermediate pool, sand tower and reuse pool successively according to treatment scheme, conventional surface process wastewater recycling treatment process flow process has following several distinct disadvantage: 1. technical process is long, and facility investment is high; 2. system chemical feeding quantity is large; 3. floor space is large, and civil engineering cost is high; 4. service life of equipment is short, and working cost is high.
Therefore, the recycling processing technique developed a kind of concise in technology, reduce running cost, improve the surface treatment waste water of effluent quality is still needed.
Summary of the invention
In order to overcome above-mentioned defect, the invention provides a kind of surface treatment waste water reuse treatment process, this surface treatment waste water reuse treatment process mainly carrys out treat surface process waste water and reuse with " coagulation+precipitation+biochemistry+MBR film " combination process, it is a kind of surface treatment waste water reuse treatment process reaching Treated sewage reusing standard, solve surface treatment waste water Treatment for Reuse costly, the problem of reuse difficulty up to standard.
The present invention in order to the technical scheme solving its technical problem and adopt is:
A kind of surface treatment waste water reuse treatment process, carries out in the steps below:
A, in the coagulation basin of rapid stirring, add sodium hydroxide pH value is adjusted between 7-8, and add coagulant polymeric aluminium chloride (PAC), the pollution substance in waste water and polymerize aluminum chloride (PAC) are reacted and generates throw out; In the flocculation basin of low rate mixing, add flocculation agent polyacrylamide (PAM) again, the organic contamination suspended particle in waste water and colloid are changed into macroscopic macrobead suspended substance;
B, the waste water after processing of step A flow in settling tank and precipitates, make solid-liquid separation;
C, settling tank water outlet flow directly in biochemistry pool and carry out biochemical treatment, and biochemistry pool is divided into the oxygen compatibility pool of leading portion and the Aerobic Pond of back segment;
D, Aerobic Pond water outlet flow in MBR membrane cisterna, by the filteration of MBR film, separated by the water handled well and flow in reuse pool, microorganism and pollution substance are then stayed in MBR membrane cisterna, and the dope in MBR membrane cisterna is returned Aerobic Pond inlet end by recycling reflux pump.
The present invention in order to the further technical scheme solving its technical problem and adopt is:
Aerobic Pond adopts contact oxidation method process.
The invention has the beneficial effects as follows: surface treatment waste water reuse treatment process of the present invention mainly carrys out treat surface process waste water and reuse with " coagulation+precipitation+biochemistry+MBR film " combination process, has following advantage:
1, anti-shock loading is improved, reduce surplus sludge volume, but also stability and the effluent quality of water outlet can be improved, produce water can without the pre-treatment such as sand filtration, carbon filter just can direct reuse on surface-treatment line, shorten treatment of process streams line length, decrease facility investment;
2, decrease system chemical feeding quantity, do not need after biochemistry to add PAC and PAM;
3, MBR film device integrated level is high, greatly reduces floor space, saves civil engineering cost;
4, service life of equipment is long, and working cost is low.
Accompanying drawing explanation
Fig. 1 is conventional surface process wastewater recycling treatment process schema;
Fig. 2 is present invention process schema.
Embodiment
Below by way of specific specific examples, the specific embodiment of the present invention is described, those of ordinary skill in the art understand advantage of the present invention and effect easily by content disclosed in the present specification.
Embodiment: a kind of surface treatment waste water reuse treatment process, carry out in the steps below:
A, in the coagulation basin of rapid stirring, add sodium hydroxide pH value is adjusted between 7-8, and add coagulant polymeric aluminium chloride (PAC), pollution substance in waste water and PAC are reacted and generates throw out, in the flocculation basin of low rate mixing, add flocculation agent polyacrylamide (PAM) again, the organic contamination suspended particles such as the acrylic resin in waste water and colloid are changed into macroscopic macrobead suspended substance.
B, waste water after processing of step A flow in settling tank again, utilize the decline sedimentation speed of suspended substance to be greater than current lift velocity, and suspended substance to sink at the bottom of pond thus carries out solid-liquid separation.
C, settling tank water outlet flow directly in biochemistry pool and carry out biochemical treatment, and biochemistry pool is divided into the oxygen compatibility pool of leading portion and the Aerobic Pond of back segment, and oxygen compatibility pool is the first two stage utilizing anaerobic treatment: hydrolysis and souring stage.Hydrolysis stage is that the larger molecular organics of complexity is hydrolyzed to micromolecular dissolved organic matter by extracellular enzyme.Souring stage is that deliquescent organism is converted into organic acid, alcohol, aldehyde and CO
2deng.Facultative biochemistry processing section (oxygen compatibility pool) impact load to the water yield, water quality has certain adaptive faculty, and is interrupted by the long-chain organism of the tensio-active agent in waste water, for follow-up aerobic section creates favorable conditions.Aerobic Pond adopts contact oxidation method process, and this treatment process is being widely used in recent years, especially at middle and high concentration, trade effluent that change of water quality is larger.Most of organism in waste water is carried out decomposition digestion by the microorganism of Aerobic Pond, thus removes the COD in waste water.
D, Aerobic Pond water outlet flow in MBR membrane cisterna again, by the filteration of MBR film, separated by the waste water handled well and flow in reuse pool, the pollution substance such as microorganism and organism is then stayed in MBR membrane cisterna, and the dope in MBR membrane cisterna is returned Aerobic Pond inlet end by recycling reflux pump.To greatly improve the concentration of microorganism in biochemistry pool like this, thus improve biochemical efficiency, produce water to reuse pool, return on production line with working shaft and recycle.
The surface treatment waste water reuse treatment process of the present embodiment is tried out in the Industrial Wastewater Treatment engineering of Kunshan bike production company, and carry out water quality detection to the waste water before and after process, measuring result is as following table 1.
Table 1:
By above-mentioned technological design, in actual motion application, the various process datas such as water-in and water-out water quality are tested, detect and are studied, following Several Research conclusion can be drawn:
1, this technique meet producer require surface treatment class waste water 50% be back to use on production line after treatment, other 50% qualified discharge;
2, MBR film instead of traditional coagulation reaction tank, settling tank, Sand Filtration System and carbon filter system, serves the Effect of Pretreatment of coagulation, separation;
3, MBR membranous system comprises: MBR membrane module, Membrane cleaning system, film sludge recirculation system and sludge treating system composition (can as required);
4, waste water flows in biochemistry pool and carries out biochemical treatment after coagulating sedimentation pre-treatment, organism in biochemistry pool in waste water as microorganism food and be removed, so the concentration of microorganism is the important indicator of water treatment effect, use MBR film that the microorganism concn in biochemistry pool can be made to improve several times, thus improve Biochemical Treatment greatly, and effluent quality can reach quality of reused water requirement;
5, along with the increase of working time, there will be the situation of MBR flux depression, at this moment just need the cleaning carrying out MBR film, cleaning system forms by cleaning pond, flushing water pump, cleaning medicine-chest and driving etc.
Claims (2)
1. a surface treatment waste water reuse treatment process, is characterized in that: carry out in the steps below:
A, in the coagulation basin of rapid stirring, add sodium hydroxide pH value is adjusted between 7-8, and add coagulant polymeric aluminium chloride, make the pollution substance in waste water and polymeric aluminium reaction generate throw out; In the flocculation basin of low rate mixing, add flocculation agent polyacrylamide again, the organic contamination suspended particle in waste water and colloid are changed into macroscopic macrobead suspended substance;
B, the waste water after processing of step A flow in settling tank and precipitates, make solid-liquid separation;
C, settling tank water outlet flow directly in biochemistry pool and carry out biochemical treatment, and biochemistry pool is divided into the oxygen compatibility pool of leading portion and the Aerobic Pond of back segment;
D, Aerobic Pond water outlet flow in MBR membrane cisterna, by the filteration of MBR film, separated by the water handled well and flow in reuse pool, microorganism and pollution substance are then stayed in MBR membrane cisterna, and the dope in MBR membrane cisterna is returned Aerobic Pond inlet end by recycling reflux pump.
2. surface treatment waste water reuse treatment process as claimed in claim 1, is characterized in that: Aerobic Pond adopts contact oxidation method process.
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| CN201310126115.0A CN103172224B (en) | 2013-04-11 | 2013-04-11 | Surface treatment waste water reuse treatment process |
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| CN201310126115.0A CN103172224B (en) | 2013-04-11 | 2013-04-11 | Surface treatment waste water reuse treatment process |
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| CN104086028A (en) * | 2014-07-18 | 2014-10-08 | 无锡进帆环保科技有限公司 | Device for recovering and treating surface treatment wastewater |
| CN109179880A (en) * | 2018-09-28 | 2019-01-11 | 山东揵大环保技术有限公司 | A kind of purification method for treating micro-polluted drinking water |
| CN117303675A (en) * | 2023-11-28 | 2023-12-29 | 山东中侨启迪环保装备有限公司 | Sewage treatment system and sewage treatment method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101717162A (en) * | 2009-12-02 | 2010-06-02 | 厦门世达膜科技有限公司 | Method for treating and recycling wastewater generated by processing surface of aluminum profile |
| CN102531274A (en) * | 2010-12-31 | 2012-07-04 | 上海轻工业研究所有限公司 | Treatment method for ammonia nitrogen and COD (Chemical Oxygen Demand) in surface treatment waste water |
| CN102616979A (en) * | 2011-12-26 | 2012-08-01 | 上海集惠环保科技发展有限公司 | Treatment method for surface treatment liquid wastewater of metal processing |
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| JP3793937B2 (en) * | 1998-03-25 | 2006-07-05 | オルガノ株式会社 | Silicon wafer polishing wastewater treatment method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101717162A (en) * | 2009-12-02 | 2010-06-02 | 厦门世达膜科技有限公司 | Method for treating and recycling wastewater generated by processing surface of aluminum profile |
| CN102531274A (en) * | 2010-12-31 | 2012-07-04 | 上海轻工业研究所有限公司 | Treatment method for ammonia nitrogen and COD (Chemical Oxygen Demand) in surface treatment waste water |
| CN102616979A (en) * | 2011-12-26 | 2012-08-01 | 上海集惠环保科技发展有限公司 | Treatment method for surface treatment liquid wastewater of metal processing |
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