CN103102043A - Treatment method of kitchen garbage biogas liquid - Google Patents
Treatment method of kitchen garbage biogas liquid Download PDFInfo
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- CN103102043A CN103102043A CN2012105323537A CN201210532353A CN103102043A CN 103102043 A CN103102043 A CN 103102043A CN 2012105323537 A CN2012105323537 A CN 2012105323537A CN 201210532353 A CN201210532353 A CN 201210532353A CN 103102043 A CN103102043 A CN 103102043A
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Abstract
The invention discloses a treatment method of a kitchen garbage biogas liquid. The treatment method comprises the following steps of: coagulating and depositing the kitchen garbage biogas liquid in a sedimentation basin; allowing the coagulated and deposited biogas liquid to enter an A/O (anoxic/oxic) tank, wherein the A/O (anoxic/oxic) tank comprises an anoxic tank and an oxic tank which are sequentially communicated; denitrifying the coagulated and deposited biogas liquid in the anoxic tank and then allowing the biogas liquid to automatically flow into the oxic tank for nitration; and allowing the biogas liquid treated in the oxic tank to enter an MBR (Membrane Biological Reactor) for separating mud from water, thereby obtaining treated water. The treatment method is low in energy consumption, an aerating system with low energy consumption is adopted and simultaneously a hollow negative-pressure immersed ultrafiltration system is matched for lowering the energy consumption; the automatic degree is high, fully-automatic operation is realized, the manpower resource is saved and no harm is caused to human bodies; environmental pollution is less, a cover plate is arranged and a smelly gas collecting system is matched for controlling the smelly gas; and simultaneously a fan shock absorption system and a sound insulation system are matched for controlling the noise.
Description
Technical field
The present invention relates to the treatment process of a kind of rubbish from cooking natural pond liquid, belong to the sewage treatment area of solid waste in processing.
Background technology
Rubbish from cooking is the important component part of domestic refuse, is a kind of solid waste that the resident forms in the personal consumption process.It has that water ratio is high, organic content is high, saltiness is high and the characteristics such as easy corruption, is having a strong impact on people's healthy and environmental health.
The rubbish from cooking treatment technology mainly contains the related-art process such as burning, landfill, anaerobic digestion, compost.For the rubbish from cooking of high organic content, high-moisture percentage, anaerobic digestion can effectively realize garbage as resource, produces clean energy-biogas.But can produce COD, natural pond liquid that ammonia nitrogen is higher after anaerobic digestion, the composition of this natural pond liquid and general waste water composition are different, general wastewater processing technology is difficult to reach its processing requirements, so must formulate thorough stabilization that a kind of perfect pointed natural pond liquor treating process technology realizes rubbish from cooking natural pond liquid part, innoxious.
Methods involving and the equipment processed of natural pond liquid after domestic not rubbish from cooking anaerobic digestion now, the existing just natural pond liquid treatment facility of aquaculture animal waste water, or be used for natural pond liquid breeding technique, or carry out natural pond liquid with anaerobism and process.Concrete water quality parameter contrast is as shown in table 1.
Table 1 anaerobism natural pond fluidity can contrast table
| Classification | COD（mg/L) | Ammonia nitrogen (mg/L) | Hardly degraded organic substance | Solid content | Specific conductivity |
| The percolate anaerobic effluent | 8000 | 640 | High | 0.3% | 10502 |
| Plant's natural pond liquid | 10000 | 700 | Low | 0.4% | 8000 |
| Remaining anaerobism natural pond, kitchen liquid | 12000 | 900 | Higher | 1% | 12000 |
Data from table 1 can find out, after the rubbish from cooking anaerobic digestion, the COD of natural pond liquid, ammonia nitrogen, specific conductivity are all higher than percolate anaerobic effluent and plant's natural pond liquid, but that its hardly degraded organic substance content belongs to the percolate anaerobic effluent is the highest.Rubbish from cooking natural pond liquid solid content is high, complicated component, and existing natural pond liquid processing method has been difficult to reach its qualified discharge effect.
Summary of the invention
The treatment process that the purpose of this invention is to provide a kind of rubbish from cooking natural pond liquid, this treatment process can realize the innoxious and qualified discharge of rubbish from cooking natural pond liquid.
The treatment process of a kind of rubbish from cooking provided by the present invention natural pond liquid comprises the steps:
Rubbish from cooking natural pond liquid carries out coagulating sedimentation in settling tank; Natural pond liquid after coagulating sedimentation enters the A/O pond, and described A/O pond comprises anoxic pond and the Aerobic Pond that is communicated with successively, and described natural pond liquid after coagulating sedimentation carries out anti-nitration reaction in described anoxic pond, then carries out nitration reaction in described Aerobic Pond from flowing into; The natural pond liquid of processing through described Aerobic Pond enters and carries out mud-water separation in the MBR membrane bioreactor and namely obtain treated water.
In above-mentioned treatment process, described coagulating sedimentation carries out under the condition that medicament exists, and described medicament can be polyacrylamide (PAM) or polymerize aluminum chloride (PAC).
In above-mentioned treatment process, the temperature of described coagulating sedimentation can be 25 ℃ ~ 35 ℃, specifically can be 25 ℃ or 35 ℃, and the time can be 0.5 ~ 1 day, specifically can be 0.5 day or 1 day.
In above-mentioned treatment process, the temperature of described anti-nitration reaction can be 25 ℃ ~ 35 ℃, specifically can be 25 ℃ or 35 ℃, and the time can be 1 ~ 1.5 day, specifically can be 1 day or 1.5 days.
In above-mentioned treatment process, the temperature of described nitration reaction can be 25 ℃ ~ 35 ℃, specifically can be 25 ℃ or 35 ℃, and the time can be 3 ~ 3.5 days, specifically can be 3 days.
In above-mentioned treatment process, the aerating apparatus in described Aerobic Pond is elevated microporous aeration device.
In above-mentioned treatment process, described MBR membrane bioreactor can be external immersion MBR film water case.
In method provided by the invention, in described anoxic pond, by the denitrifying bacterium effect, the nitric nitrogen in waste water is converted into N
2, reach the purpose of removing ammonia nitrogen and total nitrogen; In described Aerobic Pond, nitrifier is nitre attitude and nitrite nitrogen with mineralized nitrogen under aerobic condition; In anoxic pond and Aerobic Pond, the microorganism growth breeding utilizes organism in waste water simultaneously, and the organism in sewage further is removed again.Described MBR membrane bioreactor can effectively be realized the mud-water separation in biochemistry pool, and can prevent the loss of nitration denitrification thalline.The water outlet of MBR film can directly enter city planting ductwork, or enters the NF film processing system, further removes the macromolecular particle thing in waste water.
Advantage of the present invention is:
(1) develop rubbish from cooking natural pond liquid New Process for Treatment, natural pond liquid is stabilization, innoxious thoroughly, the water outlet qualified discharge;
(2) energy consumption is low, adopts the less energy-consumption aerating system, and supporting hollow negative pressure immersion ultrafiltration system reduces energy consumption simultaneously;
(3) level of automation is high, and fully automatic operation is saved manpower, endangers without human body;
(4) secondary environmental pollution is few, cover plate is set and supporting foul smell collection processing system implementing carries out ozone Control, and draught fan matching damping simultaneously and sound insulation system carry out noise control.
Description of drawings
Fig. 1 is the schema of the treatment process of rubbish from cooking of the present invention natural pond liquid.
Embodiment
The experimental technique that uses in following embodiment is ordinary method if no special instructions.
In following embodiment, material used, reagent etc., if no special instructions, all can obtain from commercial channels.
The processing of embodiment 1, rubbish from cooking natural pond liquid
According to flow process shown in Figure 1 to being in and natural pond liquid is processed.
Rubbish from cooking natural pond liquid flows into settling tank certainly, and adds PAM, and natural pond liquid carries out coagulating sedimentation under the effect of medicament in settling tank, and the temperature of controlling coagulating sedimentation is 25 ℃, and the time is 0.5 day; Then enter in the A/O pond, this A/O pond comprises anoxic pond and the Aerobic Pond that is communicated with successively, and wherein the main anti-nitration reaction that occurs in anoxic pond, be converted into N by the denitrifying bacterium effect with the nitric nitrogen in waste water
2, reaching the purpose of removing ammonia nitrogen and total nitrogen, the temperature of controlling anti-nitration reaction is 35 ℃, the time is 1 day, without aeration; Anoxic pond water outlet gravity flow enters Aerobic Pond, utilize elevated aerating system to carry out micro-pore aeration, the main nitration reaction that occurs in Aerobic Pond, nitrifier is nitre attitude and nitrite nitrogen with mineralized nitrogen under aerobic condition, the temperature of controlling nitration reaction is 35 ℃, and the time is 3 days.In anoxic and Aerobic Pond, the microorganism growth breeding utilizes organism in waste water simultaneously, and the organism in sewage further is removed again.Aerobic Pond water outlet gravity flow enters external immersion MBR film water case, refluxed by MBR film water case and enter the denitrification pond, control of reflux ratio is 300%, but the clear water qualified discharge standard of being aspirated out by the low-voltage vacuum pump, its water outlet reaches the grade III Standard in " integrated wastewater discharge standard ", the MBR ultra-filtration membrane can effectively be realized the mud-water separation in biochemistry pool, and can prevent the loss of nitration denitrification thalline.Wherein the index of the water outlet of MBR membrane bioreactor is the grade III Standard in " integrated wastewater discharge standard ", and it can directly enter city planting ductwork, also can further enter the NF film processing system, further removes the macromolecular particle thing in waste water.
The processing of embodiment 2, rubbish from cooking natural pond liquid
According to flow process shown in Figure 1 to being in and natural pond liquid is processed.
Rubbish from cooking natural pond liquid flows into settling tank certainly, and adds PAM, and natural pond liquid carries out coagulating sedimentation under the effect of medicament in settling tank, and the temperature of controlling coagulating sedimentation is 35 ℃, and the time is 1 day; Then enter in the A/O pond, this A/O pond comprises anoxic pond and the Aerobic Pond that is communicated with successively, and wherein the main anti-nitration reaction that occurs in anoxic pond, be converted into N by the denitrifying bacterium effect with the nitric nitrogen in waste water
2, reaching the purpose of removing ammonia nitrogen and total nitrogen, the temperature of controlling anti-nitration reaction is 35 ℃, the time is 1.5 days, without aeration; Anoxic pond water outlet gravity flow enters Aerobic Pond, utilize elevated aerating system to carry out micro-pore aeration, the main nitration reaction that occurs in Aerobic Pond, nitrifier is nitre attitude and nitrite nitrogen with mineralized nitrogen under aerobic condition, the temperature of controlling nitration reaction is 35 ℃, and the time is 3 days.In anoxic and Aerobic Pond, the microorganism growth breeding utilizes organism in waste water simultaneously, and the organism in sewage further is removed again.Aerobic Pond water outlet gravity flow enters external immersion MBR film water case, refluxed by MBR film water case and enter the denitrification pond, control of reflux ratio 800%, but the clear water qualified discharge standard of being aspirated out by the low-voltage vacuum pump, its water outlet reaches the grade III Standard in " integrated wastewater discharge standard ", the MBR ultra-filtration membrane can effectively be realized the mud-water separation in biochemistry pool, and can prevent the loss of nitration denitrification thalline.Wherein the index of the water outlet of MBR membrane bioreactor is the grade III Standard in " integrated wastewater discharge standard ", and it can directly enter city planting ductwork, also can further enter the NF film processing system, further removes the macromolecular particle thing in waste water.
Claims (7)
1. the treatment process of a rubbish from cooking natural pond liquid, comprise the steps:
Rubbish from cooking natural pond liquid carries out coagulating sedimentation in settling tank; Natural pond liquid after coagulating sedimentation enters the A/O pond, and described A/O pond comprises anoxic pond and the Aerobic Pond that is communicated with successively, and described natural pond liquid after coagulating sedimentation carries out anti-nitration reaction in described anoxic pond, then carries out nitration reaction in described Aerobic Pond from flowing into; The natural pond liquid of processing through described Aerobic Pond enters and carries out mud-water separation in the MBR membrane bioreactor and namely obtain treated water.
2. treatment process according to claim 1 is characterized in that: described coagulating sedimentation carries out under the condition that medicament exists, and described medicament is polyacrylamide or polymerize aluminum chloride.
3. treatment process according to claim 1 and 2, it is characterized in that: the temperature of described coagulating sedimentation is 25 ℃ ~ 35 ℃, and the time is 0.5 ~ 1 day.
4. the described treatment process of any one according to claim 1-3, it is characterized in that: the temperature of described anti-nitration reaction is 25 ℃ ~ 35 ℃, and the time is 1 ~ 1.5 day.
5. the described treatment process of any one according to claim 1-4, it is characterized in that: the temperature of described nitration reaction is 25 ℃ ~ 35 ℃, and the time is 3 ~ 3.5 days.
6. the described treatment process of any one according to claim 1-5, it is characterized in that: the aerating apparatus in described Aerobic Pond is elevated microporous aeration device.
7. the described treatment process of any one according to claim 1-6, it is characterized in that: described MBR membrane bioreactor is external immersion MBR film water case.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103408190A (en) * | 2013-07-31 | 2013-11-27 | 惠州市兴牧畜牧发展有限公司 | Sewage treatment system |
| CN104662157A (en) * | 2013-07-17 | 2015-05-27 | 北京化工大学 | Method for implementing zero emission biogas slurry in pure straw anaerobic digestion |
| CN105271521A (en) * | 2015-10-22 | 2016-01-27 | 深圳能源资源综合开发有限公司 | Sewage treatment equipment based on MBR (membrane bioreactor) membrane application |
| CN105502831A (en) * | 2016-01-08 | 2016-04-20 | 广州绿日环保科技有限公司 | Waste water biochemical treatment device and technology |
| CN106630282A (en) * | 2016-12-26 | 2017-05-10 | 航天凯天环保科技股份有限公司 | Method for treating biogas slurry in USR (up-flow solid reactor) methane tank |
| CN109354339A (en) * | 2018-12-14 | 2019-02-19 | 湖南军信环保股份有限公司 | A kind of anaerobic sludge digestion liquid cooperates with the method and system of processing with high-concentration garbage percolate |
| CN110357350A (en) * | 2019-07-02 | 2019-10-22 | 广州鹏凯环境科技股份有限公司 | A kind for the treatment of process for landfill leachate |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104662157A (en) * | 2013-07-17 | 2015-05-27 | 北京化工大学 | Method for implementing zero emission biogas slurry in pure straw anaerobic digestion |
| CN103408190A (en) * | 2013-07-31 | 2013-11-27 | 惠州市兴牧畜牧发展有限公司 | Sewage treatment system |
| CN105271521A (en) * | 2015-10-22 | 2016-01-27 | 深圳能源资源综合开发有限公司 | Sewage treatment equipment based on MBR (membrane bioreactor) membrane application |
| CN105502831A (en) * | 2016-01-08 | 2016-04-20 | 广州绿日环保科技有限公司 | Waste water biochemical treatment device and technology |
| CN106630282A (en) * | 2016-12-26 | 2017-05-10 | 航天凯天环保科技股份有限公司 | Method for treating biogas slurry in USR (up-flow solid reactor) methane tank |
| CN109354339A (en) * | 2018-12-14 | 2019-02-19 | 湖南军信环保股份有限公司 | A kind of anaerobic sludge digestion liquid cooperates with the method and system of processing with high-concentration garbage percolate |
| CN109354339B (en) * | 2018-12-14 | 2023-11-14 | 湖南军信环保股份有限公司 | Method and system for cooperatively treating sludge anaerobic digestion solution and high-concentration landfill leachate |
| CN110357350A (en) * | 2019-07-02 | 2019-10-22 | 广州鹏凯环境科技股份有限公司 | A kind for the treatment of process for landfill leachate |
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Application publication date: 20130515 |