CN1412131A - Method for treating organic waste liquor by using methane bacterium fermentation - Google Patents
Method for treating organic waste liquor by using methane bacterium fermentation Download PDFInfo
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- CN1412131A CN1412131A CN01128953A CN01128953A CN1412131A CN 1412131 A CN1412131 A CN 1412131A CN 01128953 A CN01128953 A CN 01128953A CN 01128953 A CN01128953 A CN 01128953A CN 1412131 A CN1412131 A CN 1412131A
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- methanobacteria
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The method for treating organic waste liquid by using methane bacteria includes the following steps: respectively placing the methane bacteria resisting high temp., resisting middle temp. and resisting low temp. into culture medium liquor prepared with nutrient elements of nitrogen, phosphorus, potassium and sulfur to make culture and naturalization; using obtained composite methane bacterium liquor to mix with organic waste liquor, and feeding them into reactor to implement fermentation treatment; in reactor increasing material-feeding points and water-distributing points to make the bacterial liquor fully contact with sludge microbe and prevent the production of fermentation dead zone and acidification-returning phenomenon. The adaptive range of the reactor is extensive, the activity of methane flora can be raised, the fermentation is more complete.
Description
Technical field
The present invention relates to a kind of technology of fermentative processing organic liquid waste, be particularly suitable for fields such as Alcohol Production, chemical industry, breed and adopt.
Background technology
Along with development of industry and agriculture,, become a social problem to the processing of various organic liquid wastes.Handle badly, not only will cause environmental pollution, also cause the waste of resource; if and handle well, not only will have remarkable social benefit, also will make the more enterprise of all kinds of organic liquid wastes save cost; bring considerable economic, help environment protection again.Have now and utilize the methanobacteria fermentation method that organic liquid waste is handled, produce biogas, the technology that is used has had history for many years.Since methanobacteria all can only be in the little alkali environment of neutrality survival and reproduction, and according to the difference of adaptive temperature, the strict differentiation, what have can only adapt to high temperature, what have can only adapt to low temperature, have can only adapt in the temperature, all be to be used alone adaptive methanobacteria in practice.Handling different waste liquids generally all is at the waste liquid characteristic and specialized designs anaerobic reaction device and the corresponding zymotechnique of employing, conventional Alcohol Production waste dregs liquid is because its concentration is big, temperature is high, reactor at this characteristics design is the highly effective reaction device, adopts high-heat fermentation process; And plant's fecaluria wastewater characteristics complexity, wastewater temperature is near normal temperature, and handling such waste water will be at the characteristic of this waste water reactor design and select normal temperature fermentation technology for use again.Reflecting device is difficult to exchange use, different waste water are difficult to exchange to be handled, and reactor adaptability is limited, again because reactor volume is bigger, internal temperature is unbalanced, and be easy to generate temperature fluctuation, when making thermally sensitive methanobacteria and when enlivening and suppressing make fermentation not thorough, the technology fluctuation of service, gas production rate is subjected to very big influence, and effluent quality is bad, causes secondary pollution after the discharging.Not only processing efficiency is low, and the quality of output object is undesirable, biogas and organic waste residues are as the primary product of handling organic liquid waste, the biogas that existing facture produces, the content of methane not high 65%, the content of the nitrogen in the waste residue, phosphorus, potassium is low and unbalanced, and the as fertilizer sources result of use is not good now.In addition, the fermentation equipment of organic liquid waste mainly is the anaerobism producer now, be fermentor tank, the wayward feed time randomness that causes of charging is bigger, and pre-existing reactors cloth water spot is single, and the cloth water spot is more, also is to adopt the manual operation charging, causes charging not only inhomogeneous but also increase energy consumption.Easily form channel and dead angle when feed liquor passes through mud, ferment effect is poor, and submerged fermentation is not thorough, thereby part is returned acid, is difficult to reliable and stable operation to methanobacteria being suppressed and death, producing, and then influence the total system fermentation, and limited the increase of reactor load amount.When generally handling high concentrated organic waste liquid, in order to reach steady running, reactor could keep underload to handle with the charging waste liquid in must refluxing with fluid, reach higher day output, then must carry out the preset pH value, thereby increase the working cost of engineering with lime or liquid caustic soda.
Goal of the invention
The objective of the invention is to be intended to overcome the deficiency of above-mentioned prior art, provide a kind of fermentation fully, low, the adaptable method and apparatus of cost.
The object of the present invention is achieved like this: by nitrogen, phosphorus, potassium, sulphur is main nutrient elements, preparation complex medium liquid, with the methanobacteria of high temperature resistant, middle temperature, normal temperature respectively methanobacteria based on temperature in anti-, mixed, put into complex medium liquid, make microbial strains obtain domestication, generate compound methanobacteria liquid, it is imported the anaerobic reactor fermentation with mixed organic liquid waste in the material pond after mixing, form methane and waste residue.
Increase reactor feed point and cloth water spot, feed liquor can closely fully be contacted with sludge microbe, adopt the charging of microcomputer automatic control pulse interval, in the biogas cabinet, establish mash-back.
The present invention has realized fully contacting between mud and feed liquor, charging is even, form the phenomenon at channel and dead angle when having overcome the traditional reactor feed liquor by mud, the appearance of avoid fermenting dead band and acid returning phenomenon has improved the activity of methane flora, make fermentation more abundant thoroughly, improve processing efficiency, saved processing cost, and improved nitrogen, phosphorus, potassium content in biogas output and quality and the waste residue, can be used as the raw material of fertilizer, the content of methane reaches more than 70% in the biogas.Realized that reactor diameter reduces, highly increases, broken domestic and international height for reactor and can not surpass 20 meters forbidden zone, thereby reduced floor space, enlarged volume.Because composite bacteria liquid adaptive temperature scope strengthens, the variation range of the temperature of the feed liquor that reactor can be admitted and reactor self-temperature all obviously strengthens, and controls cost thereby saved, and has simplified technology, has strengthened the adaptability of reactor.
Description of drawings
Below in conjunction with accompanying drawing, the present invention is described in detail.
Fig. 1 is the process flow sheet that alcohol waste lees solution and plant's liquid dung mixed fermentation are handled.
Fig. 2 is the structure of reactor synoptic diagram.
Fig. 3 is Fig. 2 reactor bottom feed liquor and cloth water spot synoptic diagram.
Fig. 4 is the gas holder structural representation.
Specific embodiments
With reference to Fig. 1, by nitrogen, phosphorus, potassium, sulphur is main nutrient elements, wherein nitrogen content is 20% to 80%, phosphorus content is 5% to 30%, potassium content is 5% to 25%, sulphur content is 5% to 25%, and preparation complex medium liquid will be high temperature resistant respectively, middle temperature, the methanobacteria of normal temperature is based on the methanobacteria of temperature in anti-, mixed, put into complex medium liquid, make microbial strains obtain domestication, generate compound methanobacteria liquid, alcohol waste lees solution mixed with the plant fecaluria put into dosing chamber, pour compound methanobacteria liquid into dosing chamber according to 1: 100 to 1: 100000 ratio, make mixed solution import the reactor anaerobically fermenting, form methane and waste residue by power.
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, fermentation reactor is made up of reactor tank body 1 and gas holder 2, and tank body 1 can increase to more than two.Tank body 1 fixes on the ground, inside is full of waste liquid, and the bottom is mainly mud, is provided with bacterial classification dirt settling 3 around the tank body of middle and upper part, around tank body 1 bottom, be provided with a plurality of opening for feeds, liquid feeding sub-tube 4 is told from feed liquor house steward 5, stretches into the bottom of tank body 1 by opening for feed, forms the cloth water spot 6 of discrete distribution, waste liquid enters after the tank body 1, fully contact fermentation by a plurality of cloth water spots 4 and mud with wherein methanobacteria, produce biogas and slowly rise to tank body 1 top, enter gas holder 2 by delivery pipe 7.Valve 8 on the liquid feeding sub-tube is carried out control automatically by microcomputer and is realized intermittently evenly charging.
Gas holder 2 is made up of tank 9, gas storage holder cover 10 and mash-back 11, gas holder 2 fixes on the ground, the delivery pipe 7 of drawing from tank body 1 top is directly introduced mash-back 11, make the waste liquid that flows into further finish fermentation therein, tank 9 and gas storage holder cover 10 pass through water seal, between the water surface and gas storage holder cover 10, be full of biogas, can draw utilization.
Claims (7)
1, a kind of method of utilizing methanobacteria to handle organic liquid waste, it is characterized in that: will high temperature resistant respectively, middle temperature, cryogenic methanobacteria puts into by the liquid medium of nitrogen, phosphorus, potassium, the preparation of sulphur nutritive element and cultivate domestication, mixes importing reactor fermentative processing with organic liquid waste with the compound methanobacteria liquid that obtains.
2, the method for utilizing methanobacteria to handle organic liquid waste according to claim 1, it is characterized in that: the blended organic liquid waste is alcohol waste lees solution and plant's fecaluria.
3, the method for utilizing methanobacteria to handle organic liquid waste according to claim 1 and 2, it is characterized in that: nitrogen content is 20%-80% in the liquid medium, and phosphorus content is 5%-25%, and potassium content is 5%-25%, and sulphur content is 5%-25%.
4, the method for utilizing methanobacteria to handle organic liquid waste according to claim 1 and 2 is characterized in that: when high temperature resistant, the middle temperature of difference, the mixing of cryogenic methanobacteria, the amount proportion of the methanobacteria of wherein anti-middle temperature is not less than 30%.
5, the method for utilizing methanobacteria to handle organic liquid waste according to claim 1 and 2, it is characterized in that: the blending ratio of compound methanobacteria liquid and organic liquid waste is 1: 50 to 1: 100000.
6, a kind of fermentation reactor, comprise cylindrical tank and gas holder, it is characterized in that: around the tank body bottom, have a plurality of opening for feeds, a plurality of liquid feeding sub-tubes that valve is housed are told from the feed liquor house steward, pass through opening for feed, stretch into tank base respectively, form the cloth water spot of a plurality of dispersed placement, be provided with mash-back in the gas holder in tank base.
7, fermentation reactor according to claim 6 is characterized in that: the valve on the liquid feeding sub-tube is by microcomputer automatic control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01128953A CN1412131A (en) | 2001-10-15 | 2001-10-15 | Method for treating organic waste liquor by using methane bacterium fermentation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01128953A CN1412131A (en) | 2001-10-15 | 2001-10-15 | Method for treating organic waste liquor by using methane bacterium fermentation |
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| CN1412131A true CN1412131A (en) | 2003-04-23 |
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| CN01128953A Pending CN1412131A (en) | 2001-10-15 | 2001-10-15 | Method for treating organic waste liquor by using methane bacterium fermentation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109749952A (en) * | 2017-11-06 | 2019-05-14 | 高节义 | The method and device thereof of culture enrichment methane backeria |
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2001
- 2001-10-15 CN CN01128953A patent/CN1412131A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109749952A (en) * | 2017-11-06 | 2019-05-14 | 高节义 | The method and device thereof of culture enrichment methane backeria |
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