CN104291440A - Method for promoting hydrolytic acidification process in anaerobic tank - Google Patents
Method for promoting hydrolytic acidification process in anaerobic tank Download PDFInfo
- Publication number
- CN104291440A CN104291440A CN201410529765.4A CN201410529765A CN104291440A CN 104291440 A CN104291440 A CN 104291440A CN 201410529765 A CN201410529765 A CN 201410529765A CN 104291440 A CN104291440 A CN 104291440A
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- digester
- anaerobic
- sewage
- digestion tank
- anaerobic pond
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/006—Regulation methods for biological treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Engineering & Computer Science (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Molecular Biology (AREA)
- Health & Medical Sciences (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a hydrolytic acidification method in an anaerobic tank. The hydrolytic acidification method comprises the following specific steps: adjusting the environment in a digestion tank in advance until a moderate pH value is achieved by adding an alkali; adding sodium thiosulfate into the digestion tank, and stirring with a stirrer while adding sodium thiosulfate so that the digestion tank is controlled to be in absolutely anaerobic state and the electrode potential is controlled to be at -75ev to -15ev; standing the digestion tank for 3-5 days and then adding ethanol into the digestion tank and continuously fermenting for 3-5 days; and finally introducing sewage into the digestion tank while controlling the digestion tank to be in absolutely anaerobic state, adjusting the pH value of the digestion tank to be 7.2-7.8 by virtue of continuously adding sodium hydroxide, heating the digestion tank to 50-55 DEG C in a gradient manner and carrying out high-temperature treatment on sewage in the digestion tank at the high temperature.
Description
Technical field
The present invention relates to a kind of method of anaerobic pond acidication, belong to water treatment field.
Background technology
Along with expanding economy, the utilization of water and process have been more and more crucial in life.Water is renewable resources, but for a long time by artificial severe contamination, the self-purification capacity of water declines, and regeneration and the recycling efficiency of water reduce.Water treatment becomes the requisite production phase.Wherein, sewage disposal, relate to the most extensively with common in water treatment field, nowadays in water treatment technological process, anaerobic pond is disposed of sewage comparatively effective.Anaerobic pond is key structures in sewage disposal, is dispose of sewage under the condition not having oxygen, is generally divided into anaerobic reaction four-stage: hydrolysis stage, souring stage, produces the acetic acid stage, the methane phase stage.But Hydrolysis Acidification, in the sewage disposal stage in the past, perfect not, make at product acetic acid and in the methane phase stage, the untreated composition of hydrolysis treatment technical process residual sewage is more, causes whole processing technological flow to be compared the processing efficiency of sewage too low, and clean water quality degree is lower.At present, the method improving processing efficiency has: improve reaction conditions temperature, regulate the pH etc. of internal-response condition.But comprehensive not, processing efficiency can not significantly improve.So, be necessary to design a kind of method to improve defect and the deficiency of above-mentioned treatment process.
Summary of the invention
The present invention is directed in traditional anaerobic hydrolysis-acidification process, the problems such as processing speed is slow, purification of water quality rate is low provide that a kind of acidication speed is fast, process promotes modification method thoroughly.
For achieving the above object, the invention provides a kind of method of facilitation of hydrolysis acidization, being specially:
(1), in advance digester environment is regulated, be adjusted to suitability potential of hydrogen;
(2), again in digester, add Sulfothiorine, and stir, control at absolute anaerobic state, electrode electromotive force controls at-75ev--15ev;
(3), subsequently in digester add ethanol, continue fermentation;
(4), Xiang Chizhong introduces sewage, control absolute anaerobic state, and Xiang Chizhong adds sodium hydroxide, regulates pH, in order to gradient increased temperature, and pyroprocessing.
In described promotion anaerobic pond, the method for acidication is divided into four steps, the first step adds that alkali regulates, second step adds Sulfothiorine, and stirring and adjusting digester, keep anaerobism, the 3rd step be add ethanol fermentation, the 4th step introduces sewage to carry out, and add sodium hydroxide, regulate pH, and hot conditions process.
Described first step passes into anaerobic sludge in digester, and adds alkali, regulates digester pH at 7.2-7.8.
Described second step adds Sulfothiorine, and stirs mud with agitator, controls absolute anaerobic state.
Described third step adds ethanol in digester, and digester ferments.
Sewage passes in pond by the 4th described step, controls absolute anaerobic state, and adds sodium hydroxide, regulates pH, then carries out hot conditions process in order to gradient increased temperature.
Principle of work of the present invention: regulate envrionment conditions in digester in advance, subsequently anaerobic sludge is passed in pond, add sodium carbonate, conditioning of mud digester, then add Sulfothiorine in pond, and stir, controlling reaction conditions in digester is anaerobic state; Digester leaves standstill three days, after add ethanol, then continue fermentation three days, finally can lead to sewage and enter pond, control absolute anaerobic state, and constantly add sodium hydroxide, regulate pH, and accompany by gradient increased temperature, carry out pyroprocessing.
Application method of the present invention: first anaerobic sludge is passed in pond, add alkali, pH in equalizing tank, then add Sulfothiorine, add ethanol pit entry fermentation more subsequently, introduce sewage subsequently to process, accompany by and add sodium hydroxide, regulate pH, simultaneously with gradient increased temperature, carry out high temperature sewage disposal, speed is faster.
The significant advantage that the present invention has is: 1, add alkali and enter anaerobic sludge digester, control pH, makes stable reaction in pond efficient, then add Sulfothiorine in pond, accompany by stirring, keep absolute anaerobic environment; 2, ethanol fermentation is added, make sludge activity in pond higher, after introducing sewage, constantly add sodium hydroxide, and with gradient increased temperature, under hot conditions, pH ambient stable, sludge activity is high, speed of reaction is fast, for sewage, the process more quick used time is shorter, more thorough to the anaerobic hydrolysis-acidification process of sewage.
Specific embodiments
A method for facilitation of hydrolysis acidization, method is:
1, in advance digester environment is regulated, add alkali, be adjusted to suitability potential of hydrogen;
2, in digester, add Sulfothiorine again, and stir with agitator, accompany by and add Sulfothiorine, control at absolute anaerobic state, electrode electromotive force controls at-75ev--15ev;
3, digester leaves standstill 3-5 days, adds ethanol subsequently in digester, continues fermentation 3-5 days;
4, finally can introduce sewage by Xiang Chizhong, control absolute anaerobic state, and constantly in pond, add sodium hydroxide, regulate pH to 7.2-7.8, in order to gradient increased temperature to 50-55 DEG C, under digester hot conditions, height process be carried out to sewage.
A certain waterhead area sewage is accessed the anaerobic pond of common anaerobic pond and the present invention's improvement by example 1 respectively simultaneously, and sewage SS is 205g/L.After common anaerobic pond process, sewage SS is 30g/L, and the treatment time is 12h, and after improving, after anaerobic pond process, sewage SS is 13g/L, and the treatment time is 10h.Relatively find, the anaerobic pond digestion non-solubility polymer conversion after invention improves improves, and speed increases.
A certain waterhead area sewage is accessed the anaerobic pond of common anaerobic pond and the present invention's improvement by example 2 respectively simultaneously, and sewage SS is 346g/L.After common anaerobic pond process, sewage SS is 51g/L, and the treatment time is 16h, and after improving, after anaerobic pond process, sewage SS is 16g/L, and the treatment time is 13h.Relatively find, the anaerobic pond digestion non-solubility polymer conversion after invention improves improves, and speed increases.
A certain waterhead area sewage is accessed the anaerobic pond of common anaerobic pond and the present invention's improvement by example 3 respectively simultaneously, and sewage SS is 430gL.After common anaerobic pond process, sewage SS is 56g/L, and the treatment time is 19h, and after improving, after anaerobic pond process, sewage SS is 26g/L.Treatment time is 14h, compares discovery, and the anaerobic pond digestion non-solubility polymer conversion after invention improves improves, and speed increases.
Claims (7)
1. one kind promotes the method for acidication process in anaerobic pond, it is characterized in that: first by pipeline, anaerobic sludge is introduced in digester, add alkali, conditioning of mud pH, Sulfothiorine is added again in mud, under the effect that agitator stirs, control the absolute anaerobic state of mud, mud is made to react 3-5 days in digester, add ethanol again, continue fermentation 3-5 days, pass through water-in subsequently, sewage enters in digester, control sewage carbon source concentration, absolute anaerobic state is kept in digester, and add sodium hydroxide, regulate pH, and regulate temperature with 5 DEG C/d gradient increased temperature to 50 DEG C-55 DEG C.
2. a kind of method promoting lytic enzyme acidifying process in anaerobic pond according to claim 1, is characterized in that: described adds sodium carbonate in anaerobic sludge.Regulate pH to 7.2-7.8.
3. a kind of method promoting lytic enzyme acidifying process in anaerobic pond according to claim 1, is characterized in that: described to after stirring in digester, standing 1 day, and control absolute anaerobic state in digester, electrode electromotive force is-75ev--15ev.
4. a kind of method promoting lytic enzyme acidifying process in anaerobic pond according to claim 1, is characterized in that: describedly add Sulfothiorine to leaving standstill in the digester of a day, leaves standstill three days subsequently.
5. a kind of method promoting lytic enzyme acidifying process in anaerobic pond according to claim 1, is characterized in that: describedly add ethanol subsequently in digester, keeps digester inside fermentation three days.
6. a kind of method promoting lytic enzyme acidifying process in anaerobic pond according to claim 1, is characterized in that: described sewage passes in digester, controls sewage carbon source concentration and is increased to 8000mg/L from 1000mg/L with 100mg/Ld speed.
7. a kind of method promoting lytic enzyme acidifying process in anaerobic pond according to claim 1, is characterized in that: add sodium hydroxide in the most backward described sewage, and controls in digester with gradient increased temperature.
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| CN201410529765.4A CN104291440A (en) | 2014-10-09 | 2014-10-09 | Method for promoting hydrolytic acidification process in anaerobic tank |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410529765.4A CN104291440A (en) | 2014-10-09 | 2014-10-09 | Method for promoting hydrolytic acidification process in anaerobic tank |
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| CN104291440A true CN104291440A (en) | 2015-01-21 |
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| CN201410529765.4A Pending CN104291440A (en) | 2014-10-09 | 2014-10-09 | Method for promoting hydrolytic acidification process in anaerobic tank |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105268461A (en) * | 2015-11-04 | 2016-01-27 | 高大元 | Method for recovering lignin from straw pulp black liquid to prepare lignin carbon carrier catalyst |
| CN105417693A (en) * | 2015-11-10 | 2016-03-23 | 中国科学院生态环境研究中心 | Combined hydrolytic acidification water quality conditioning device |
| CN107382001A (en) * | 2017-08-04 | 2017-11-24 | 安吉晨源环保资源再生利用有限公司 | A kind of urban sludge treatment device and method |
Citations (2)
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| JP2013188727A (en) * | 2012-03-15 | 2013-09-26 | Kajima Corp | Method and system for controlling microbial reaction in water bottom soil |
| CN103952445A (en) * | 2014-04-14 | 2014-07-30 | 杭州电子科技大学 | Method for promoting production of fermentation acid from remaining sludge by utilizing redox mediator |
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2014
- 2014-10-09 CN CN201410529765.4A patent/CN104291440A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013188727A (en) * | 2012-03-15 | 2013-09-26 | Kajima Corp | Method and system for controlling microbial reaction in water bottom soil |
| CN103952445A (en) * | 2014-04-14 | 2014-07-30 | 杭州电子科技大学 | Method for promoting production of fermentation acid from remaining sludge by utilizing redox mediator |
Non-Patent Citations (1)
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| 欧阳二明等: "高温ASBR处理热水解污泥的梯度升温法启动试验", 《环境科学》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105268461A (en) * | 2015-11-04 | 2016-01-27 | 高大元 | Method for recovering lignin from straw pulp black liquid to prepare lignin carbon carrier catalyst |
| CN105417693A (en) * | 2015-11-10 | 2016-03-23 | 中国科学院生态环境研究中心 | Combined hydrolytic acidification water quality conditioning device |
| CN107382001A (en) * | 2017-08-04 | 2017-11-24 | 安吉晨源环保资源再生利用有限公司 | A kind of urban sludge treatment device and method |
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Application publication date: 20150121 |