CN105621806B - A kind of biological coagulation oxidation technology of quick processing kitchen garbage, waste-water - Google Patents

A kind of biological coagulation oxidation technology of quick processing kitchen garbage, waste-water Download PDF

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CN105621806B
CN105621806B CN201610051056.9A CN201610051056A CN105621806B CN 105621806 B CN105621806 B CN 105621806B CN 201610051056 A CN201610051056 A CN 201610051056A CN 105621806 B CN105621806 B CN 105621806B
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water
biological
waste
pond
kitchen garbage
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CN105621806A (en
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周立祥
颜成
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Nanjing Agricultural University
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Nanjing Beikete Environmental Protection Technology Co ltd
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/34Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • C02F3/348Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the way or the form in which the microorganisms are added or dosed
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Microbiology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Treatment Of Sludge (AREA)

Abstract

The present invention provides a kind of method of quick processing kitchen garbage, waste-water, specially uses biological coagulation oxidation technology, including biological coagulation slag removing system and biological oxidation system.It is characterized in that using specific microorganism flora using kitchen garbage, waste-water is culture medium and adding a small amount of nutritional agents makes it generate a large amount of biological flocculants, it sweeps by effect polymerize with the SS in waste water and precipitates by adsorbing bridge linking effect, charge neutralization and volume, further separation of solid and liquid slagging-off is carried out using solid-liquid separating equipment, for the mud cake isolated by producing organic fertilizer after fermentation, the limpid waste water isolated realizes qualified discharge after further biological oxidation cell processing.

Description

A kind of biological coagulation oxidation technology of quick processing kitchen garbage, waste-water
One, technical field
The present invention relates to a kind of waste water treatment process, more particularly to a kind of quick processing kitchen garbage three phase separation waste water Technique belongs to field of environment engineering technology.
Two, background technology
Kitchen garbage is the sanitary waste that resident is formed during personal consumption, is easily rotted, and stench is distributed, and is passed Broadcast bacterium and virus.Kitchen garbage includes mainly rice, food remnants, vegetables, vegetable and animals oils, meat bone etc., and chemically ingredient is next Say there is starch, cellulose, protein, lipid and inorganic salts etc..Since kitchen garbage moisture content is high (70~90%) and organic Matter content is high, is suitble to be handled using bioanalysis.
The processing method of kitchen garbage is mainly using the method focused on after collecting at present, and majority is using anaerobic fermentation Form is handled.Its basic procedure is:(1) material feeding that the kitchen garbage come concentrates receipts to be transported to kitchen garbage treatment plant will be collected Hole;(2) rubbish is subjected to mechanical sorting, recycling removes the abitotic substances such as various plastic products, glass/metal tank;(3) it is crushed Slurrying, then 70-90 DEG C of thermophilic digestion;(4) above-mentioned slurries are divided by oil using three-phase separator (a kind of Horizontal helical type centrifuge) Fat part, wastewater fraction and kitchen slag.Oil fraction deep processing is prepared into biodiesel, kitchen slag then can deep processing at feed, Fertilizer or directly landfill are done after aerobic fermentation or are burned.Three phase separation wastewater fraction then enters methane-generating pit fermentation producing methane, natural pond Liquid qualified discharge or is discharged into pipe network and enters municipal sewage plant and be further processed using materialization and biochemical treatment.
However, the kitchen garbage, waste-water pH after three phase separation is in acid (pH < 4.5), suspended solids (SS) content is high (80000-100000mg/L), COD high (majority is in 90000-120000mg/L), in addition, also containing a large amount of ammonia nitrogens, remaining grease Deng being a kind of extremely intractable high concentrated organic wastewater.Therefore, cause the anaerobic fermentation time very long (usually at 25-30 days), natural pond Liquid processing is difficult, and the processing of later stage aerobic-anaerobic is still up to nearly 10 days, and it is difficult up to standard to be discharged still, shows coloration depth, COD Majority needs further the materializations measures such as coagulation air-float to be used to carry out advanced treating in 500mg/L or more.Due to processing time Long, water is again difficult up to standard, causes structures volume big, and investment is big, and operating cost is high.Therefore, above-mentioned kitchen garbage, waste-water is solved to exist The problems in biochemical treatment is particularly important.
Three, invention content
The present invention provides a kind of method of quick processing kitchen garbage, waste-water can be fast using biological coagulation oxidation technology SS, COD in speed removal kitchen garbage, waste-water can significantly shorten later stage anaerobism with the high advantage of processing time is short, removal rate Natural pond and biochemical treatment time are produced, the water quality of water outlet is greatly improved.
A kind of method of quick processing kitchen garbage, waste-water is using biological coagulation oxidation technology, and feature exists In using specific microorganism flora using kitchen garbage, waste-water is culture medium and adding a small amount of nutritional agents makes it generate a large amount of biology waddings Solidifying agent is swept by effect polymerize with the SS in waste water and is precipitated by adsorbing bridge linking effect, charge neutralization and volume, further Separation of solid and liquid slagging-off is carried out using solid-liquid separating equipment, for the mud cake isolated by producing organic fertilizer after fermentation, that isolates is clear Clear waste water realizes qualified discharge after the processing of further biological oxidation.
The specific microorganism flora is acidophil Acidiphilium sp.J6 (depositary institutions:China Microbiological bacterium Kind preservation administration committee common micro-organisms center, preservation address:Datun Road, Chaoyang District, Beijing City Chinese Academy of Sciences microorganism is ground Study carefully institute, preserves number:CGMCC No.11036, preservation time:On July 2nd, 2015, Classification And Nomenclature:Acidophil Acidiphilium sp.) and Klebsiella Klebsiella sp.F1 (depositary institutions:Chinese microorganism strain preservation management Committee's common micro-organisms center, preservation address:Datun Road, Chaoyang District, Beijing City Institute of Microorganism, Academia Sinica, when preservation Between:Preserve number on April 23rd, 2009:CGMCC No.3032, Classification And Nomenclature:Klebsiella Klebsiella sp.) group At compound bacteria, the ratio of the two is 1: 1.
A kind for the treatment of process of quick processing kitchen garbage, waste-water, including biological coagulation slag removing system and biological oxygen Change system.The biological coagulation slag removing system includes regulating reservoir, hydrolysis acidification pool, collection mud sump, microculture pond, life successively Object coagulation reaction tank is separated by solid-liquid separation facility.The biological oxidation system includes collecting-tank, anaerobic methane production pond, Aerobic-anaerobic life Change pond, secondary settling tank.
In above-mentioned biological treatment, waste water enters regulating reservoir and water is adjusted, and enters hydrolysis acidification pool afterwards, plays Cooled down to the kitchen garbage, waste-water of high temperature and automatically adjusts the effect of pH.Kitchen garbage, waste-water is when hydrolysis acidification pool stops Between be 2~3d, at this point, pH rises to 6 or so, COD removal rates 20% or so.Then, the underflow in hydrolysis acidification pool is given up Water is pumped into collection mud sump.
The underflow waste water for collecting mud sump is pumped into biological coagulation reaction tank, in the biology coagulation reaction tank, underflow waste water with Microbial inoculum is sufficiently mixed under the action of blender, and a small amount of microbial nutrition agent is added (mainly by N P and K calcium and magnesium The nutrients such as iron sulphur and a small amount of organic carbon source composition), providing Institute of Micro-biology using aerating system needs O2, make in microbial inoculum It is destroyed with mud granule internal junction Heshui in lower underflow waste water, physicochemical property is changed, and improves the dehydration property of underflow waste water Energy.The residence time, the volume ratio of underflow waste water and bacterium solution was 5 in 1.0~5.0h in biological coagulation reaction tank for underflow waste water: 1~20: 1.
The dewatering of underflow waste water after biological coagulation reaction tank is improved, into solid-liquid separating equipment, such as Diaphragm chamber-type press filter, is separated by solid-liquid separation, and all recycling becomes semi-oriented mud cake to SS.It, therefore, can because its moisture content is relatively low It is powdered to be directly broken into, because it contains the nutrients such as abundant organic matter and nitrogen phosphorus, the raw material of production organic fertilizer are can be used as, It is separated by solid-liquid separation the limpid waste water of gained and enters collecting-tank.At this point, limpid waste water SS contents reach close to 0, COD removal rates 85% or more.
Collecting-tank outlet is connect with anaerobic methane production pond, and methane-generating pit is designed as up-flow anaerobic sludge blanket (UASB), limpid useless Water residence time in methane-generating pit is 2~3d, after methane recovery purification, for power generation and heat supply.Biogas slurry enters subsequent biochemistry Unit.
Biochemical unit is made of a series of biochemistry pools, using A2/ O techniques are good by 1 anoxic pond, 1 anaerobic pond and 1 Oxygen pond forms, and setting diving mixer is mixed in the anoxic pond and anaerobic pond, and the aerobic tank uses Roots's wind Machine is supplied oxygen.Biochemical unit processing time 2d or so.
The dissolved oxygen in anoxic tank a concentration of < 0.4mg/L, the anaerobic pond dissolved oxygen < 0.2mg/L, it is described aerobic Pond dissolved oxygen concentration >=2.0mg/L.
The muddy water mixed solution that biochemistry pool comes out enters secondary settling tank, carries out mud-water separation, the water quality isolated can carry out up to standard It discharges, sludge part is back to aerobic tank after precipitation, remaining sludge is carried out into biological coagulation pond at dehydration after concentration Reason.
The beneficial effects of the invention are as follows:Biological flocculant is generated using specific microorganism flora, in the very short time of 1~5h It is interior to sweep effect and the SS generation coagulations in kitchen garbage underflow waste water by adsorbing bridge linking effect, charge neutralization and volume, change It is apt to its dehydration property, after machinery is separated by solid-liquid separation, almost 100% ground removes the pollutants such as SS and 85% or more COD in waste water, subsequently Biological oxidation (including the anaerobic methane production and biochemical treatment) processing less than 7d need to only be passed through, kitchen garbage, waste-water row up to standard can be made It puts.Processing time is only processed conventionally 1/5, therefore, can largely save processing investment and operating cost, have good economy Property.
Four, it illustrates
After the specific implementation mode for having read the present invention with reference to attached drawing, those skilled in the art will be more clearly Solve various aspects of the invention.Skilled person would appreciate that:These attached drawings are used only for cooperation specific embodiment party Formula illustrates technical scheme of the present invention, and is not intended to and is construed as limiting to protection scope of the present invention.Wherein,
Fig. 1 is a kind of biological coagulation oxidizing process process flow chart of quick processing kitchen garbage, waste-water of the present invention.
Fig. 2 is a kind of technique stream of one embodiment of quick processing kitchen garbage, waste-water biology coagulation oxidizing process of the present invention Cheng Tu.
Five, specific implementation mode
1 the present invention is described in further detail below in conjunction with the accompanying drawings.
A kind of biological coagulation oxidation technology of quick processing kitchen garbage, waste-water, including biological coagulation slag removing system and biology Oxidative system.Biological coagulation slag removing system is poly- including regulating reservoir, hydrolysis acidification pool, collection mud sump, microculture pond, biology successively Heavy reaction tank, the special slag remover of biological coagulation.The biological oxidation system includes collecting-tank, anaerobic methane production pond, Aerobic-anaerobic Biochemistry pool, secondary settling tank.
Each pollutant concentration of kitchen garbage, waste-water is as follows:COD 108000mg/L, SS 97500mg/L, ammonia nitrogen 300mg/L.
In above-mentioned biological treatment, kitchen garbage, waste-water 10m after three phase separation3Water quality water is adjusted into regulating reservoir Amount, subsequently into dischargeable capacity 30m3Hydrolysis acidification pool.Kitchen garbage, waste-water is 2.5d in the hydrolysis acidification pool residence time, is passed through After hydrolysis acidification, pH rises to 6.05, COD and is reduced to 81200mg/L, and temperature is reduced to room temperature (28 DEG C).Then, by hydrolysis acid The underflow waste water changed in pond is pumped into collection mud sump.
Collect 10m in mud sump3It is 15m that underflow waste water after hydrolysis acidification, which enters pool capacity,3Biological coagulation reaction tank, In the biology coagulation reaction tank, by underflow wastewater volume and bacterium solution volume than 10: 1 addition bacterium solution 1m3, underflow waste water and microorganism Bacterium solution is sufficiently mixed under the action of blender, be added account for underflow wastewater volume 0.5% microbial nutrition agent (mainly by The nutrients such as N P and K Ca, Mg and Fe sulphur and a small amount of organic carbon source composition) 50kg, providing Institute of Micro-biology using aerating system needs O2, Underflow waste particles object (i.e. sludge) internal junction Heshui is destroyed under microbial inoculum effect, and physicochemical property changes, and improves Dewatering, underflow waste water residence time in biological coagulation reaction tank is 3.0h.
Underflow waste water after biological coagulation reaction tank enters the special Chamber Type Diaphragm Filter Press of biological coagulation and carries out solid-liquid Separation, for solid therein by press filtration at semi-oriented mud cake, the moisture content of mud cake is 58%, after being directly crushed, can be used as production The raw material of organic fertilizer are separated by solid-liquid separation the limpid waste water of gained and enter collecting-tank.At this point, limpid waste water SS contents are close to 0, A concentration of 15600mg/L of COD, compared with raw water before processing, COD removal rates reach 85.6%.
Collecting-tank water outlet is connected with the water inlet of up-flow anaerobic sludge blanket (UASB), and limpid waste water is held in methane-generating pit It is 2d to stay the time, and after methane recovery purification, for power generation and heat supply, biogas slurry enters subsequent biochemical unit.At this point, biogas slurry COD Only 1820mg/L, ammonia nitrogen 216mg/L.
Biochemical unit is made of a series of biochemistry pools, using A2/ O techniques are 3m by 1 dischargeable capacity3Anoxic pond, 1 3m3Anaerobic pond and 1 15m3Aerobic tank composition.Aerobic tank mixed liquor is partly refluxed to anoxic pond, realizes that nitration denitrification is de- Nitrogen, waterpower residence time is total 2d in biochemical unit, and wherein the waterpower residence time of aerobic tank is 1.5d.Anoxic pond and anaerobism Diving mixer is arranged in pond to be mixed, aerobic tank is supplied oxygen using roots blower, ensures that dissolved oxygen concentration is not less than 2mg/L。
Aerobic tank muddy water mixed solution enters secondary settling tank and carries out precipitation water outlet, sedimentation time 4h.Supernatant is discharged through floss hole Liquid, in supernatant ammonia-nitrogen content be 4.7mg/L, SS 28mg/L, COD 58mg/L, total phosphorus 0.2mg/L.
Precipitating sludge is back to the processing that biological coagulation reaction tank carries out next group.

Claims (1)

1. the biological coagulation oxidation technology of a kind of biological coagulation oxidation technology of quick processing kitchen garbage, waste-water, use includes life Object coagulation slag removing system and biological oxidation system, it is characterised in that:The biology coagulation slag removing system includes regulating reservoir, water successively Solve acidification pool, collection mud sump, microculture pond, biological coagulation reaction tank, the special slag remover of biological coagulation;The biological oxidation System includes collecting-tank, anaerobic methane production pond, Aerobic-anaerobic biochemistry pool, secondary settling tank;Kitchen garbage, waste-water enters tune after three phase separation Water quality and quantity is adjusted in section pond, and each pollutant concentration of kitchen garbage, waste-water is as follows:COD108000mg/L, SS97500mg/L, ammonia nitrogen 300mg/L, subsequently into hydrolysis acidification pool, kitchen garbage, waste-water is in the hydrolysis acidification pool residence time 2.5d, after hydrolysis acidification, pH rises to 6.05, COD and is reduced to 81200mg/L, and temperature is reduced to room temperature, then, by water Underflow waste water in solution acidification pool is pumped into collection mud sump, and collecting the underflow waste water in mud sump after hydrolysis acidification, to enter biological coagulation anti- Ying Chi, in biological coagulation reaction tank, by underflow wastewater volume and bacterium solution volume than 10: 1 addition bacterium solutions, underflow waste water and micro- life Object bacterium solution is sufficiently mixed under the action of blender, and the microbial nutrition agent for accounting for underflow wastewater volume 0.5% is added, and is used Aerating system, which provides Institute of Micro-biology, needs O2, underflow waste particles object internal junction Heshui is destroyed under microbial inoculum effect, dense Pulp waste water residence time in biological coagulation reaction tank is 3.0h, and the underflow waste water after biological coagulation reaction tank carries out solid-liquid Separation, solid therein, at semi-oriented mud cake, are separated by solid-liquid separation the limpid waste water of gained and are entered collecting-tank by press filtration;Micro- life Object is the compound bacteria that acidophil Acidiphiliumsp.J6 and citric acid K1ebsiellasp.F1 are formed in 1: 1 ratio;Collection The water outlet in pond is connected with anaerobic methane production pond, and methane-generating pit is designed as up-flow anaerobic sludge blanket, and limpid waste water is in methane-generating pit Residence time is 2d, and after methane recovery purification, biogas slurry enters subsequent biochemical unit, and biochemical unit uses A2/O techniques, described Biochemical unit is aerobic-anaerobic biological pond, is made of 1 anoxic pond, 1 anaerobic pond and 1 aerobic tank, aerobic tank mixed liquor It is partly refluxed to anoxic pond, realizes nitration denitrification denitrogenation, waterpower residence time is total 2d, wherein aerobic tank in biochemical unit Waterpower residence time be 1.5d, setting diving mixer is mixed in anoxic pond and anaerobic pond, and aerobic tank uses Roots's wind Machine is supplied oxygen, and ensures that dissolved oxygen concentration is not less than 2mg/L;Aerobic tank muddy water mixed solution enters secondary settling tank and carries out precipitation water outlet, Sedimentation time is 4h, and supernatant is discharged through floss hole, and precipitating sludge is back to the place that biological coagulation reaction tank carries out next group Reason.
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CN108359611B (en) * 2018-02-12 2020-12-18 南京贝克特环保科技有限公司 Biotransformation method for rapidly transforming waste animals and tissues of large-scale farm
CN112718803A (en) * 2020-12-18 2021-04-30 天津市工业微生物研究所有限公司 On-site rapid kitchen waste treatment process
CN113716795A (en) * 2021-08-13 2021-11-30 深圳市利赛环保科技有限公司 Kitchen waste biogas slurry dehydration process
CN115572014A (en) * 2022-10-27 2023-01-06 大连爱德摩设备制造有限公司 On-line strengthening treatment method and system for microorganisms in refractory sewage

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CN1631820A (en) * 2005-01-14 2005-06-29 北京大学 Combined treatment method and system for landfill leachate
CN104839427A (en) * 2015-05-15 2015-08-19 吴伟浩 Method for preparing animal drinking water or feed mixing water from kitchen waste water

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DE69534296T2 (en) * 1994-07-29 2006-04-27 Chiron Corp. (N.D.Ges.D. Staates Delaware), Emeryville Secreted E1 / E2 complex of hepatitis C virus obtained from C-terminally truncated polypeptides E1 and E2

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Publication number Priority date Publication date Assignee Title
CN1631820A (en) * 2005-01-14 2005-06-29 北京大学 Combined treatment method and system for landfill leachate
CN104839427A (en) * 2015-05-15 2015-08-19 吴伟浩 Method for preparing animal drinking water or feed mixing water from kitchen waste water

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