CN102874977A - Waste water treatment method - Google Patents

Waste water treatment method Download PDF

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Publication number
CN102874977A
CN102874977A CN2012103361892A CN201210336189A CN102874977A CN 102874977 A CN102874977 A CN 102874977A CN 2012103361892 A CN2012103361892 A CN 2012103361892A CN 201210336189 A CN201210336189 A CN 201210336189A CN 102874977 A CN102874977 A CN 102874977A
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CN
China
Prior art keywords
stage
waste water
treatment
film
acidication
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Pending
Application number
CN2012103361892A
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Chinese (zh)
Inventor
陈明
蒋益民
邹颖
杨颖�
杨涛
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HANGZHOU FUMING ENVIRONMENT TECHNOLOGY Co Ltd
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HANGZHOU FUMING ENVIRONMENT TECHNOLOGY Co Ltd
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Priority to CN2012103361892A priority Critical patent/CN102874977A/en
Publication of CN102874977A publication Critical patent/CN102874977A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a waste water treatment method. The method comprises the steps of: performing hydrolytic acidification, namely performing hydrolytic acidification on waste water in an anaerobic pool; oxidizing, namely oxidizing the waste water subjected to hydrolytic acidification in an aerobic pool; precipitating, namely precipitating the oxidized waste water in a precipitating pool; and performing membrane treatment, namely performing membrane treatment on the precipitated waste water in a membrane treatment pool. By the method, the cleaning period of a membrane can be prolonged, and the maintenance work of working personnel is reduced.

Description

A kind of method of wastewater treatment
Technical field
The present invention relates to field of waste water treatment, particularly relate to a kind of method of wastewater treatment.
Background technology
Along with China to the improving constantly of environmental requirement, also more and more higher to the discharging water quality requirement of waste water, this will must process factory effluent before the discharging factory effluent.
In existing wastewater processing technology, usually the treatment process of waste water is divided into following several stages: anaerobic reaction stage, contact oxidation stage, wherein, in the anaerobic reaction stage, utilize the anaerobic bacterium in the anaerobic pond that the larger molecular organics in the waste water is resolved into small organic molecule, the water outlet in process anaerobic reaction stage is primary treatment water; In the contact oxidation stage, utilize the aerobic bacteria in the Aerobic Pond that the small organic molecule in the primary treatment water is further decomposed, active mud is dammed by the membrane separation plant that arranges in the aerobic reaction stage simultaneously.Through after these several steps, draining has reached national emission standard, can discharge.
In order to guarantee that the small organic molecule in the primary treatment water is fully decomposed, just require the content of the active sludge in the Aerobic Pond high, high with the content of guaranteeing aerobic bacteria, but the active sludge of high-content can be opposite to the film of the membrane separation apparatus in the oxidation pond and pollute, in order to guarantee the water quality of Aerobic Pond water outlet, just need to clean film.Because the content of active mud is high, frequently film is cleaned with regard to needs, increased the weight of staff's maintenance service.
Therefore, how to design a kind of method of wastewater treatment, can prolong the membrane washing cycle, the maintenance service that alleviates the staff is the problem that those skilled in the art need to solve.
Summary of the invention
The purpose of this invention is to provide a kind of method of wastewater treatment, can prolong the membrane washing cycle, alleviate staff's maintenance service.
A kind of method of wastewater treatment provided by the present invention comprises:
The acidication stage, the waste water acidification reaction that in anaerobic pond, is hydrolyzed;
In the oxide treatment stage, in Aerobic Pond, carry out oxidizing reaction via the waste water in described acidication stage;
In the precipitation process stage, precipitate in settling tank via the waste water in described oxide treatment stage;
The treatment stage of film, in the film treating pond, carry out film via the waste water of described precipitation process and process.
Preferably, also comprise the sediment discharge treatment process, discharge throw out in the described settling tank by the sludge pump that is arranged at described settling tank, described sediment discharge technique and described precipitation process stage carry out simultaneously.
Preferably, also comprise the throw out reflux technique, be back to acidication stage or oxide treatment stage via the throw out of described sediment discharge treatment process, described throw out reflux technique and described sediment discharge treatment process carry out simultaneously.
Preferably, the treatment stage that described acidication step of reaction also comprising charcoal absorption, the treatment stage of described charcoal absorption and described acidication step of reaction carry out simultaneously.
Preferably, described gac is powdered active carbon.
A kind of method of wastewater treatment provided by the present invention is included in anaerobic pond and is hydrolyzed acidication stage of acidification reaction; In Aerobic Pond, carry out the oxide treatment stage of oxide treatment via the waste water after the acidication reaction treatment; The precipitation process stage of in settling tank, precipitating via the waste water of oxide treatment; Via the waste water of precipitation process treatment stage that the film treating pond carries out film that film processes.So arrange, the waste water acidification that in anaerobic pond, is hydrolyzed, the anaerobic bacterium in the anaerobic pond can be decomposed the organism in the waste water, makes it to change into labile small organic molecule; Treated waste water can enter Aerobic Pond and carry out oxidizing reaction, the small organic molecule of the aerobic bacteria in the Aerobic Pond in can Decomposition Wastewater; The waste water that the process Aerobic Pond is processed enters settling tank and precipitates, and in settling tank, the suspended substance in the waste water is precipitated; The treatment stage that the waste water of processing via settling tank entering film, in the film treating pond, carry out film and process, waste water is further purified.After the film processing, can make waste water reach emission standard, water up to standard can be discharged.
Compared with prior art, the oxide treatment stage separated with film the treatment stage carry out, but also be provided with the precipitation process stage before the treatment stage of film, so arrange, make the waste water via the oxide treatment stage carry out precipitation process after the stage, the treatment stage of entering film again.In the precipitation process stage, precipitable thing in the waste water can precipitate in settling tank, can reduce so the precipitable thing in the waste water the treatment stage of entering film, throw out in the film treating pond reduces, therefore can reduce the pollution that throw out causes film, and then can prolong the cleaning cycle of film, alleviate staff's maintenance service.
A kind of preferred embodiment in, also comprise the sediment discharge treatment process, the throw out in the settling tank discharges via sludge pump, sediment discharge treatment process and precipitation process stage carry out simultaneously.The sediment discharge treatment process can periodically carry out according to practical situation, and when throw out was discharged, the precipitation process stage was continuous service.Process by sediment discharge, throw out in the settling tank is discharged, can avoid because the too much available space minimizing of piling up and causing settling tank of throw out in the pond also can prevent simultaneously because the throw out amount is too much, cause sedimentation effect to reduce, make the effluent quality variation of settling tank.
In another preferred embodiment, also comprise the throw out reflux technique, will be back to via the throw out of sediment discharge treatment process acidication stage or oxide treatment stage, throw out reflux technique and sediment discharge treatment process carry out simultaneously.By to sedimentary reflow treatment, the throw out of settling tank discharging can be sent into anaerobic pond, make organism in the throw out proceed the acidication reaction or throw out sent into to make organism proceed oxidizing reaction in the Aerobic Pond, so can make organism in the throw out decomposing again in anaerobic pond or Aerobic Pond, thereby can improve the biochemical effect of anaerobic pond or Aerobic Pond.Active mud in the throw out contains microorganism simultaneously, and therefore sedimentary backflow can also remedy the active mud loss of anaerobic pond or Aerobic Pond, increases the microbe population of anaerobic pond or Aerobic Pond.
In the preferred scheme of another kind, the treatment stage that the acidication step of reaction also comprising charcoal absorption, the treatment stage of charcoal absorption and the acidication step of reaction carry out simultaneously.In the acidication step of reaction, utilize the adsorption of gac, the organism in the absorption anaerobic pond waste water is convenient to organism and is contacted with anaerobic bacterium, is conducive to organic decomposition.Adsorption through gac can reduce organic content in the water, and the organism of charcoal absorption can be by bacterial degradation.The treatment stage of adsorbing simultaneously organic gac and can enter oxide treatment stage, precipitation process stage and film along with waste water.In the oxide treatment stage, because the adsorption of gac is convenient to aerobic bacteria and is contacted with small organic molecule, so that small organic molecule is fully decomposed; In the precipitation process stage, because the use of gac, microorganism, gac and throw out form particle, can accelerate sedimentation speed, improve the deposition efficiency of settling tank; The treatment stage of film, film can be held back gac, utilizes the adsorption of gac, can remove the color of waste water, improves the water quality of draining.Undecomposed by the organism of charcoal absorption after settling tank precipitation, again enter into anaerobic pond or Aerobic Pond through the throw out reflux technique, the organism of charcoal absorption is further decomposed.
In another preferred embodiment, gac is powdered active carbon.With compare with the other forms of gac of volume, adopt powdered active carbon, can enlarge and organic contact area, be convenient to organic absorption is conducive to the microorganism decomposing organic matter.
Description of drawings
Fig. 1 is the schematic diagram of a kind of method of wastewater treatment in the specific embodiment provided by the present invention.
Embodiment
Core of the present invention provides a kind of method of wastewater treatment, can prolong the membrane washing cycle, alleviates staff's maintenance service.
In order to make those skilled in the art person understand better the solution of the present invention, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 1, Fig. 1 is the schematic diagram of a kind of method of wastewater treatment in the specific embodiment provided by the present invention.
The treatment stage that method of wastewater treatment comprising acidication stage 1, oxide treatment stage 2, precipitation process stage 3, film in this specific embodiment 4, wherein:
In the acidication stage 1, the waste water acidification reaction that is hydrolyzed in anaerobic pond utilizes the anaerobic bacterium in the anaerobic pond that the larger molecular organics in the waste water is resolved into small organic molecule.
In the oxide treatment stage 2, the waste water of processing via the acidication stage 1 carries out oxidizing reaction in Aerobic Pond.In Aerobic Pond, utilize aerobic bacterial degradation small organic molecule.
In the precipitation process stage 3, the waste water of processing via the oxide treatment stage 2 precipitates in settling tank.In settling tank, can will precipitate via the precipitable thing in the waste water in oxide treatment stage 2.
The treatment stage of film 4, enter the film treating pond via the waste water in precipitation process stage 3, in the film treating pond, carry out film and process, waste water further is purified.The treatment stage of via film 4, can make waste water reach emission standard, water up to standard can discharge.
Compared with prior art, the oxide treatment stage 24 is separated and carries out with film the treatment stage, but also the treatment stage of film, be provided with the precipitation process stage 3 before 4, so arrange, waste water via the oxide treatment stage 2 is carried out after the precipitation process, the treatment stage of entering film again 4.In the precipitation process stage 3, the precipitable things such as the active mud in the waste water can be precipitated in this stage, can reduce like this treatment stage of entering film the precipitable thing in 4 the waste water, throw out in the film treating pond reduces, therefore can reduce the pollution that throw out causes film, and then the cleaning cycle of film is prolonged, alleviate staff's maintenance service.
In order to guarantee the available space of settling tank, also comprise sediment discharge treatment process 5 in this specific embodiment, the throw out in the settling tank discharges via sludge pump.Process by sediment discharge, throw out in the settling tank is discharged, can avoid because throw out is too much piled up and caused the available space of settling tank to reduce in the pond, also can prevent simultaneously since the throw out amount too much after, cause sedimentation effect to reduce, make the effluent quality variation of settling tank.
Need to prove, sediment discharge treatment process 5 periodically carries out, and can carry out per month primary sedimentation discharge process technique 5 according to practical situation, and when throw out discharged, the precipitation process stage 3 continued to carry out.Certainly, also can be according to practical situation, prolong or shorten the cycle of sediment discharge treatment process, carry out once such as per two months or every two weeks.
Also comprise throw out reflux technique 6 in this specific embodiment, will be back to via the throw out of sediment discharge treatment process 5 the acidication stage 1, throw out reflux technique 6 carries out simultaneously with sediment discharge treatment process 5.By to sedimentary reflow treatment, the throw out of settling tank discharging can be sent into anaerobic pond and proceed the acidication reaction, so can make organism in the throw out decomposing again in anaerobic pond, thereby can improve the Biochemical Treatment of anaerobic pond.Active mud in the throw out also contains microorganism simultaneously, and therefore sedimentary backflow can also remedy the active mud loss of anaerobic pond, increases the quantity of microorganism in the anaerobic pond.
Need to prove, in this specific embodiment, will be back to via the throw out of sediment discharge treatment process 5 the acidication stage 1, throw out can certainly be back to the oxide treatment stage 2, perhaps will be back to the acidication stage 1 via the throw out part of sediment discharge treatment process 5, the treatment stage of another part reflux oxidation 2, can make like this organism in the throw out re-start decomposition, improve the Biochemical Treatment of Aerobic Pond, anaerobic pond.
In this specific embodiment, the treatment stage that also comprising charcoal absorption, acidication step of reaction 1 (do not indicate among the figure), and (do not indicate among the figure) treatment stage of charcoal absorption and carry out simultaneously with acidication step of reaction 1.
In acidication step of reaction 1, utilize the adsorption of gac, the organism in the absorption anaerobic pond waste water is convenient to organism and is contacted with anaerobic bacterium, is conducive to organic decomposition.Adsorption through gac can reduce organic content in the water, and the organism of charcoal absorption can be decomposed by anaerobic bacterium.The treatment stage of adsorbing organic gac and can enter oxide treatment stage 2, precipitation process stage 3 and film along with waste water 4.
In the oxide treatment stage 2, because the adsorption of gac is convenient to aerobic bacteria and is contacted with small organic molecule, so that small organic molecule is fully decomposed; In the precipitation process stage 4, because the use of gac, microorganism, gac and throw out form particle, can accelerate sedimentation speed, improve the deposition efficiency of settling tank; The treatment stage of film 4, film can be held back gac, utilizes the adsorption of gac, can remove the color of waste water, improves the water quality of draining.Undecomposed by the organism of charcoal absorption after settling tank precipitation, again enter into anaerobic pond or Aerobic Pond through throw out reflux technique 6, the organism of charcoal absorption is further decomposed.
Need to prove, (indicating) what use among the figure charcoal absorption treatment stage in this specific embodiment is powdered active carbon.With compare with the other forms of gac of volume, adopt powdered active carbon, can enlarge and organic contact area, be convenient to organic absorption is conducive to the microorganism decomposing organic matter.
Also need to prove, what use in this specific embodiment is Powdered shell class gac, compare with Powdered coal mass active carbon, the foreign matter content of shell class gac is few, can avoid owing to impurity affects effluent quality, certainly, do not get rid of the gac that uses other materials, such as Powdered activated carbon from bamboo yet.
In addition, because 4 waste water of processing have reached emission standard treatment stage of via film, discharge water can utilize again, therefore can also comprise the draining storage process, 4 carry out the draining storage process after finishing the treatment stage of film, so just can will store draining, the draining of storage can be utilized again as utilizing draining that the film treating pond is carried out back flushing.
Above a kind of method of wastewater treatment provided by the present invention is described in detail.Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.

Claims (5)

1. a method of wastewater treatment is characterized in that, comprising:
The acidication stage, the waste water acidification reaction that in anaerobic pond, is hydrolyzed;
In the oxide treatment stage, in Aerobic Pond, carry out oxidizing reaction via the waste water in described acidication stage;
In the precipitation process stage, precipitate in settling tank via the waste water in described oxide treatment stage;
The treatment stage of film, in the film treating pond, carry out film via the waste water of described precipitation process and process.
2. waste water treatment technology according to claim 1, it is characterized in that, also comprise the sediment discharge treatment process, discharge throw out in the described settling tank by the sludge pump that is arranged at described settling tank, described sediment discharge technique and described precipitation process stage carry out simultaneously.
3. waste water treatment technology according to claim 2, it is characterized in that, also comprise the throw out reflux technique, throw out via described sediment discharge treatment process is back to acidication stage or oxide treatment stage, and described throw out reflux technique and described sediment discharge treatment process carry out simultaneously.
4. waste water treatment technology according to claim 3 is characterized in that, the treatment stage that described acidication step of reaction also comprising charcoal absorption, the treatment stage of described charcoal absorption and described acidication step of reaction carry out simultaneously.
5. waste water treatment technology according to claim 4 is characterized in that, described gac is powdered active carbon.
CN2012103361892A 2012-09-12 2012-09-12 Waste water treatment method Pending CN102874977A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105174665A (en) * 2015-10-30 2015-12-23 朱忠良 Treatment method for dyeing and printing effluent
CN106698814A (en) * 2016-12-01 2017-05-24 国佳环境科技湖北连锁有限公司 Treatment method and treatment device for wastewater
CN108975495A (en) * 2018-07-13 2018-12-11 北京工业大学 A kind of technique of strengthened denitrification and hardly degraded organic substance removal

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07171594A (en) * 1993-12-21 1995-07-11 Ngk Insulators Ltd Method and apparatus for denitrifying and dephosphorizing sewage
CN101327990A (en) * 2008-07-18 2008-12-24 台州盛世环境工程有限公司 Method for processing sewerage by A/O biological contact oxidation process
CN102295390A (en) * 2011-08-05 2011-12-28 北京城市排水集团有限责任公司 Device and method for controlling pollution of MBR membrane

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07171594A (en) * 1993-12-21 1995-07-11 Ngk Insulators Ltd Method and apparatus for denitrifying and dephosphorizing sewage
CN101327990A (en) * 2008-07-18 2008-12-24 台州盛世环境工程有限公司 Method for processing sewerage by A/O biological contact oxidation process
CN102295390A (en) * 2011-08-05 2011-12-28 北京城市排水集团有限责任公司 Device and method for controlling pollution of MBR membrane

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105174665A (en) * 2015-10-30 2015-12-23 朱忠良 Treatment method for dyeing and printing effluent
CN106698814A (en) * 2016-12-01 2017-05-24 国佳环境科技湖北连锁有限公司 Treatment method and treatment device for wastewater
CN108975495A (en) * 2018-07-13 2018-12-11 北京工业大学 A kind of technique of strengthened denitrification and hardly degraded organic substance removal
CN108975495B (en) * 2018-07-13 2021-04-23 北京工业大学 Process for enhanced denitrification and removal of refractory organic matters

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Application publication date: 20130116