CN100500599C - Treatment method and device of rice lees wastewater - Google Patents
Treatment method and device of rice lees wastewater Download PDFInfo
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- CN100500599C CN100500599C CNB2007100269893A CN200710026989A CN100500599C CN 100500599 C CN100500599 C CN 100500599C CN B2007100269893 A CNB2007100269893 A CN B2007100269893A CN 200710026989 A CN200710026989 A CN 200710026989A CN 100500599 C CN100500599 C CN 100500599C
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Abstract
The invention discloses a disposal method and a disposal apparatus of a rice wine lees waste water in order to provide a disposal technique of rice wine lees waste water with a small floor space, less sludge mass, low fixture costs, low energy consumption, low operation fees. The key points of the technical proposal is that: improving the conventional technics of disposing the lees waste water by anaerobic and aerobic method aiming at the characteristic that the waste water generated by the rice wine lees is relatively less, and the organic matter content is high; firstly four-stage anaerobic treatment and then SBR disposal technics and a disposal method of combining with biomembrane to reduce the waste water disposal floor space to about 50%, and the sludge mass to about 70%. The average value of CODcr of disposed waste water is 180.9mg/L; average value of BOD is 63mg/L; average value of SS is 130mg/L; pH valve is 7-8. Thus, the waste water meets the secondary discharge requirement of national GB 8978-1996 alcohol industry.
Description
Technical field
The present invention relates to a kind of wastewater processing technology, refer in particular to the treatment process of rice lees wastewater, the invention still further relates to the treatment unit of realizing aforesaid method.
Background technology
What at present, generally adopted the home and abroad is that traditional anaerobic-aerobic method is handled distillery waste water.In the anaerobic-aerobic treatment process, the anaerobic treatment of distillery waste water, have than significant environmental benefit (the chemical oxygen demand cod clearance reaches more than 85%) with than remarkable economic efficiency (handle the recyclable biogas of distillery waste water, the mud of handling the back remainder is good fertilizer).Waste water after the anaerobic treatment, COD value are still very high, and about 1000～2000mg/L, after aerobic treatment, the COD value can be reduced to about 200mg/L, can reach national alcohol industry discharge of wastewater secondary standard.But anaerobic-aerobic method floor space is big, and sludge quantity is many, and working cost is also perplexing many breweries than problems such as height always, basic reason that a lot of so far breweries handle its distillery waste water not yet that Here it is.
Summary of the invention
The technical problem to be solved in the present invention provides the novel process that a kind of anaerobic-aerobic method is handled rice lees wastewater, makes the processing floor space of rice lees wastewater little, sludge quantity is few, equipment manufacturing cost is low, energy consumption is low, working cost is few.
Another technical problem that the present invention will solve provides a kind of wastewater treatment equipment of implementing aforesaid method.
Last technical scheme of the present invention is such: a kind of treatment process of rice lees wastewater is characterized in that comprising the steps: that (1) carry out solid-liquid separation with rice lees wastewater; (2) isolating waste water is handled through the placed in-line anaerobic pond of level Four, the anaerobic bacteria culture in this level Four anaerobic pond adopts first classification to cultivate, and the cultured method of connecting is again turned out the anerobe that is fit to different COD concentration; (3) handle after sand filter discharges after filtering in the sequence batch (batch process pond through hanging filtrate again through the waste water that the level Four anaerobic pond is handled, hang the treatment process that adopts activated sludge process to combine in the sequence batch (batch process pond of filtrate with biomembrance process.
The residence time of rice lees wastewater described in the treatment process of above-mentioned rice lees wastewater in the level Four anaerobic pond is 12d, and organic loading is 4.23～4.51kg/m
3.d, the pH value is 6.5～7.5.
Hydraulic detention time in the sequence batch (batch process pond of the filtrate of extension described in the treatment process of above-mentioned rice lees wastewater is 7h, and organic loading is 1.1～0.98kg/m
3.d, dissolved oxygen is 3～4mg/l, and the pH value is 7～8.
The waste water pre-exposure 2h of elder generation strengthens the bubbling air amount again when handling in the sequence batch (batch process pond of the filtrate of extension described in the treatment process of above-mentioned rice lees wastewater, and aeration 4h precipitates 0.5h then, draining 0.5h, and remaining is idle mixing time.
Back of the present invention one technical scheme is such: a kind of treatment unit of rice lees wastewater, comprise the anaerobic treatment pond, the aerobic treatment pond, wherein said anaerobic treatment pond is by first step anaerobic pond, second stage anaerobic pond, third stage anaerobic pond and the series connection of fourth stage anaerobic pond constitute, be provided with fluid inlet on first step anaerobic pond top, the bottom of described first step anaerobic pond is communicated with the top of second stage anaerobic pond, the bottom of second stage anaerobic pond is communicated with the top of third stage anaerobic pond, the bottom of third stage anaerobic pond is communicated with the top of fourth stage anaerobic pond, the top of fourth stage anaerobic pond is provided with first liquid outlet, first liquid outlet is communicated with bottom, aerobic treatment pond, be provided with a plurality of biological lamina membranaceas with active sludge in the aerobic treatment pond, top, aerobic treatment pond is provided with second liquid outlet.
The present invention compared with prior art, has following advantage: at the characteristics that waste water is less relatively, organic content is high that rice distiller grain produced, traditional anaerobic-aerobic method being handled the technology of distillery waste water improves, adopt first level Four anaerobism, re-use the treatment process that SBR treatment process and biomembrance process combine, make the wastewater treatment floor space can reduce about 50%, sludge quantity can reduce about 70%, have equipment manufacturing cost and reduce, energy consumption reduces, characteristics such as working cost reduction; Waste water chemical oxygen demand cod after it is handled
CrMean value is 180.9mg/L; Biological oxygen demand (BOD) BOD mean value is 63mg/L; SS mean value is 130mg/L; The pH value is 7～8; Reached national GB 8978-1996 alcohol industry sewage second-level emission standard (COD
Cr＜300mg/L; BOD＜100mg/L; SS＜200mg/L; The pH value is 6～9).
Description of drawings
Below in conjunction with drawings and Examples the present invention is described in further detail, but does not constitute any limitation of the invention.
Fig. 1 is a treatment unit structural representation of the present invention.
Among the figure: anaerobic treatment pond 1, first step anaerobic pond 1a, second stage anaerobic pond 1b, third stage anaerobic pond 1c, fourth stage anaerobic pond 1d, aerobic treatment pond 2, biological lamina membranacea 2a, fluid inlet 3, first liquid outlet 4, second liquid outlet 5, sand filter 6, water outlet 7, mud discharging mouth 8, water return pipeline 9.
Embodiment
Consult shown in Figure 1, the treatment unit of rice lees wastewater of the present invention, comprise anaerobic treatment pond 1, aerobic treatment pond 2, this anaerobic treatment pond 1 is by first step anaerobic pond 1a, second stage anaerobic pond 1b, third stage anaerobic pond 1c and fourth stage anaerobic pond 1d series connection constitute, be provided with fluid inlet 3 on first step anaerobic pond 1a top, the bottom of described first step anaerobic pond 1a is communicated with the top of second stage anaerobic pond 1b, the bottom of second stage anaerobic pond 1b is communicated with the top of third stage anaerobic pond 1c, the bottom of third stage anaerobic pond 1c is communicated with the top of fourth stage anaerobic pond 1d, the top of fourth stage anaerobic pond 1d is provided with first liquid outlet 4, such series system can make the waste liquid in every grade of anaerobic pond obtain automatically stirring; First liquid outlet 4 is communicated with 2 bottoms, aerobic treatment pond, in aerobic treatment pond 2, be provided with a plurality of biological lamina membranacea 2a with active sludge, 2 tops, aerobic treatment pond are provided with second liquid outlet 5, second liquid outlet 5 is connected to sand filter 6 by pipeline, sand filter 6 is provided with water outlet 7 and mud discharging mouth 8, and water outlet 7 is provided with water return pipeline 9 and is connected with aerobic treatment pond 2.
When the present invention specifically uses, consult the technical process shown in Fig. 1, earlier rice lees wastewater is carried out solid-liquid separation, the solid vinasse can be used as feed and use, after waste water enters anaerobic treatment pond 1,2 processing of aerobic treatment pond, and discharging after sand filter 6 filters; Anaerobic treatment pond 1 among the present invention is provided with the placed in-line anaerobic pond of level Four, sewage enters from first step anaerobic pond 1a, through second stage anaerobic pond 1b, third stage anaerobic pond 1c, arrives fourth stage anaerobic pond 1d at last, in the drainage flow process, the waste liquid in every grade of anaerobic pond obtains stirring automatically; The cultivation of anerobe in the level Four anaerobic pond, adopt first classification to cultivate, the cultural method of connecting again can shorten domestication time of active sludge, and in anaerobic ponds at different levels, turned out the anerobe of suitable different COD concentration respectively, make every grade of anaerobic treatment all obtain effect preferably.The biogas that the first step anaerobic pond 1a in anaerobic treatment pond 1, second stage anaerobic pond 1b are produced when wastewater treatment among the present invention can be used as fuel and uses.
Specific implementation method of the present invention is: get mud and add in the anaerobic ponds at different levels in anaerobic treatment pond 1, volume accounts for 1/3 of each anaerobic pond volume, it is 1/2,1/4,1/6 of original content that rice lees wastewater (former rice lees wastewater COD mean value is 53760mg/l) is diluted respectively, correspondence is added among second stage anaerobic pond 1b, third stage anaerobic pond 1c, the fourth stage anaerobic pond 1d successively, in first step anaerobic pond 1a, add the original content rice lees wastewater, regulate pH value to 7 in each stage reactor with yellow soda ash.Every three days, add waste liquid once, all the pH value of treatment solution in the reactor is transferred to 7 behind each new adding waste liquid by above-mentioned liquid feeding step; After 10 days, change into every other day, add waste liquid once; After 10 days, beginning only adds the original content distillery waste water every day in first step anaerobic pond 1a, and fourth stage anaerobic pond 1d gets rid of the water of isodose, and each flooding quantity and aquifer yield equate.After 10 days, in first step anaerobic pond 1a, increase by 1 times original content distillery waste water, stablize that to record water outlet COD value after 15 days be 1056 changing every day into.Through the level Four anaerobic treatment, the residence time of distillery waste water in anaerobic treatment pond 1 is 12d; The COD of distillery waste water reduces to 1090mg/L (mean value) from handling preceding 52490mg/L (mean value), and the COD clearance is up to 97.9%, and BOD reduces to 479mg/L (mean value).
Aerobic treatment of the present invention pond 2 is for hanging the sequence batch (batch process pond of filtrate, and the mode of using the SBR treatment process to combine with biomembrance process is handled, and adopts biomembrance process, can realize rice lees wastewater and mud synchronous processing; At first hang filtrate in sequence batch (batch process pond, be added in the aeration tank fetch the active sludge that comes from the purification of water quality plant aeration tank then, adopt intermittent water inflow domestication mode, get 10 times of dilutions of anaerobic biological treatment water outlet, aeration leads to oxygen; In ensuing 10 days, get anaerobic biological treatment water outlet dilution 5 every day and extraordinarily go into, also suitably add a small amount of nutritive salt (iron(ic) chloride, sal epsom, calcium chloride, monohydric phosphate, dihydrogen phosphate) and urea; Before each the feeding in raw material, leave standstill 0.5h, get rid of the supernatant liquid that equates with add-on; Since the 12nd day, increase by 1 times of anaerobic biological treatment water outlet (the waste water cumulative volume that adds dilution is constant) every day, until the anaerobic biological treatment water outlet of direct adding equal volume not diluted; Adopt intermittent oxygen supply, at the cultivation initial stage, oxygen supply is unsuitable too high, progressively forms biofilm on filtrate, strengthens the bubbling air amount; Safeguard at logical micro-air of idle stage, until next wastewater treatment.Tamed about 25 days, biofilm basically forms, and active sludge and microbial film have adapted to the environment in waste water, and the degradation rate of CODcr improves.Water outlet CODcr is basicly stable after 35 days.When handling waste water, in the biofilm SBR pond, adopt first pre-exposure 2h; Strengthen the bubbling air amount again, aeration 4h; Precipitate 0.5h then, draining 0.5h, remaining is idle mixing time.Its CODcr mean value of waste water after the processing is 180.9mg/L; BOD mean value is 63mg/L; SS mean value is 130mg/L; Measure water pH value and be 7～8. and reached national GB 8978-1996 alcohol industry sewage second-level emission standard (CODcr＜300mg/L; BOD＜100mg/L; SS＜200mg/L; The pH value is 6～8).
Claims (5)
1, plant the treatment process of rice lees wastewater, it is characterized in that comprising the steps: that (1) carry out solid-liquid separation with rice lees wastewater; (2) isolating waste water is handled through the placed in-line anaerobic pond of level Four, the anaerobic bacteria culture in this level Four anaerobic pond adopts first classification to cultivate, and the cultured method of connecting is again turned out the anerobe that is fit to different COD concentration; (3) handle after sand filter discharges after filtering in the sequence batch (batch process pond through hanging filtrate again through the waste water of level Four anaerobic treatment, hang the treatment process that adopts activated sludge process to combine in the sequence batch (batch process pond of filtrate with biomembrance process.
2, treatment process according to claim 1 is characterized in that the residence time of described rice lees wastewater in the level Four anaerobic pond is 12d, and organic loading is 4.23～4.51kg/m
3.d, the pH value is 6.5～7.5.
3, treatment process according to claim 1 is characterized in that the hydraulic detention time in the sequence batch (batch process pond of described extension filtrate is 7h, and organic loading is 1.1～0.98kg/m
3.d, dissolved oxygen is 3～4mg/L, and the pH value is 7～8.
4, treatment process according to claim 3, the pre-exposure 2h of waste water elder generation strengthens the bubbling air amount again when it is characterized in that handling in the sequence batch (batch process pond of described extension filtrate, and aeration 4h precipitates 0.5h then, draining 0.5h, remaining is idle mixing time.
5, realize the treatment unit of the treatment process of the described rice lees wastewater of claim 1, comprise anaerobic treatment pond (1), aerobic treatment pond (2), it is characterized in that described anaerobic treatment pond (1) is by first step anaerobic pond (1a), second stage anaerobic pond (1b), third stage anaerobic pond (1c) and fourth stage anaerobic pond (1d) series connection constitute, be provided with fluid inlet (3) on first step anaerobic pond (1a) top, the bottom of described first step anaerobic pond (1a) is communicated with the top of second stage anaerobic pond (1b), the bottom of second stage anaerobic pond (1b) is communicated with the top of third stage anaerobic pond (1c), the bottom of third stage anaerobic pond (1c) is communicated with the top of fourth stage anaerobic pond (1d), the top of fourth stage anaerobic pond (1d) is provided with first liquid outlet (4), first liquid outlet (4) is communicated with aerobic treatment (2) bottom, be provided with a plurality of biological lamina membranaceas (2a) with active sludge in aerobic treatment pond (2), top, aerobic treatment pond (2) is provided with second liquid outlet (5).
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| CNB2007100269893A CN100500599C (en) | 2007-02-25 | 2007-02-25 | Treatment method and device of rice lees wastewater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101580323B (en) * | 2008-05-14 | 2011-04-20 | 中国石油化工股份有限公司 | Treatment method of cellulose ethanol production wastewater |
| US7727395B2 (en) * | 2008-07-23 | 2010-06-01 | PurposeEnergy, Inc. | Method and apparatus for processing organic waste |
| CN102079606B (en) * | 2009-11-30 | 2012-05-23 | 中国科学院成都生物研究所 | Method for treating waste liquid of sweet potato fuel alcohol |
| CN102061233A (en) * | 2010-12-02 | 2011-05-18 | 湖北楚园春酒业有限公司 | Yellow wine rice milk reusing method |
| BR112014017308B1 (en) * | 2012-01-12 | 2020-03-17 | Blaygow Limited | PROCESS FOR ANAEROBIC DIGESTION OF A SUBSTANTIALLY WATER SOLUTION, PROCESS TO PRODUCE STRUVITE (NH4MGPO4? 6H2O) AND METHOD OF PROCESSING A LIQUID MATERIAL |
| CN115191410A (en) * | 2022-05-24 | 2022-10-18 | 株洲金饭碗米业有限公司 | Composite fishing bait nest material prepared from distillery waste lees water and processing technology thereof |
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Non-Patent Citations (2)
| Title |
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| 水解酸化-填料外SBR技术处理啤酒废水. 阎志谦，程艳坤.化工时刊，第2002。10期. 2002 |
| 水解酸化-填料外SBR技术处理啤酒废水. 阎志谦，程艳坤.化工时刊，第2002。10期. 2002 * |
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Effective date of registration: 20110825 Address after: 514631 Guangdong County of Pingyuan province Dong Shi Zhen Liang Ting Cun Patentee after: Meizhou Wuzhishi Technology Co., Ltd. Address before: 514015 Dean of education, Jiaying University, Guangdong, Meizhou Patentee before: Jiaying University |
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