CN1059645C - Iron method for preptreatment for marsh gas fermentation of molasses containing waste water - Google Patents
Iron method for preptreatment for marsh gas fermentation of molasses containing waste water Download PDFInfo
- Publication number
- CN1059645C CN1059645C CN93110816A CN93110816A CN1059645C CN 1059645 C CN1059645 C CN 1059645C CN 93110816 A CN93110816 A CN 93110816A CN 93110816 A CN93110816 A CN 93110816A CN 1059645 C CN1059645 C CN 1059645C
- Authority
- CN
- China
- Prior art keywords
- waste water
- wastewater
- biogas fermentation
- fermentation
- molasses
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The present invention discloses a treatment method which can overcome the toxic hazard of high concentration SO4<->to biogas fermentation and the biogas desulphurization difficulty caused by high H2S content, and is suitable for the pretreatment of molasses(sulfitation process) wastewater(such as molasses alcohol wastewater, molasses yeast wastewater, molasses monosodium glutamate wastewater, etc.) and other high SO4<->organic wastewater biogas fermentation. In the present invention, Fe<++> is added to overcome the toxic hazard of SO4<-> to biogas fermentation. A pool filled with iron shavings is arranged in front of a biogas fermentation device, the flow quantity of wastewater is controlled so that first, the iron shavings contact air, and are oxidized to generate Fe<++>; then the Fe<++> is dissolved in the wastewater to satisfy the requirement of biogas fermentation.
Description
The present invention relates to a kind of marsh gas fermentation of molasses containing waste water pretreatment process of (also claiming anaerobic digestion).
Molasses containing waste water contains the vitriol of high density, and in marsh gas fermentation processes, vitriol is produced a large amount of H by the sulphate reducing bacteria reduction
2S poisons biogas fermentation, and causes the heavy corrosion of equipment, increases the desulfurization expense of biogas.Overcoming the method that marsh gas fermentation of molasses containing waste water vitriol poisons has: remove SO in the waste water in advance with physico-chemical process 1.
4 2-2. add the sulfate reduction bacteria inhibitor; 3. adopt H
2S-CH
4Two phase process technology; 4. add ferrous salt technology.All there is the working cost height in above technology, is difficult to the problem of practical application.Wherein adding ferrous salt technology also will bring into to the disadvantageous material of biogas fermentation, as Cl
-Or SO
4 2-Deng.
The Fe that adds that the purpose of this invention is to provide a kind of marsh gas fermentation of molasses containing waste water
2+Pretreatment process is poisoned with the sulphur that overcomes biogas fermentation, does not bring into again the deleterious material of biogas fermentation.
In order to achieve the above object, the solution that the present invention adopts is: be provided with one and fill the pretreatment pool that iron plane is spent, its volume is:
Utilize the acid of waste water itself and be aided with the air catalytic oxidation and corrode the iron plane flower,, increase or reduce the Fe that dissolves in waste water by increasing or reducing the time that iron plane is spent ingress of air
2+Amount makes it to contain SO with waste water
4 2-The amount equivalent is equal substantially, enters fermentation unit again, and the iron plane flower that operation consumes should in time replenish.
The present invention compares with adding molysite technology, and iron plane Pittosporum refuse is cheap, is adding equal amts Fe
2+Situation under, can reduce the running cost of biogas fermentation significantly, and not bring other into the deleterious material of biogas fermentation, can improve the quality of biogas fermentation operation.
The concrete enforcement of invention is as follows:
1. the design requirements of pretreatment pool:
(1) according to the requirement of biogas fermentation, adds the Fe in the waste water
2+Should with SO in the waste water
4 2-Equivalent equal substantially.
(2) after tested, unit weight is 300kg/m
3Iron plane flower, in pretreatment pool, contact per hour oxidable generation Fe with air
2+0.3kg/m
3
(3) waste water soaks just was enough to the Fe that the oxidation of dissolved iron wood shavings produces in 1 hour
2+, prolong soak time, waste water Fe
2+Concentration does not have obvious increase.
(4) iron plane is spent the residence time of time+waste water in pretreatment pool of ingress of air oxidation after pre-processing period=waste water emptying.
(5) contain SO according to waste water
4 2-Concentration, can calculate pre-processing period:
(6) volume=pre-processing period of pretreatment pool (d) * wastewater flow (m
3/ d)
(7) shape of pretreatment pool is not limit.But require water inlet to fill, water outlet can emptying.
2. the operation of Wastewater Pretreatment:
After pretreatment pool was built up, filling the iron plane flower can put into operation, contains SO according to waste water
4 2-Concentration is calculated the Fe that biogas fermentation needs
2+Concentration, be dissolved in Fe in the waste water by detection
2+Concentration whether satisfy the needs of biogas fermentation, as Fe
2+Concentration is higher, under constant situation of processing cycle, by reducing the atmospheric oxidation time, prolongs soak time and reduces the Fe that adds waste water
2+Amount.As Fe
2+Concentration is on the low side, can be under the constant situation of pre-processing period by increasing oxidization time, shorten soak time (but the shortest can not be less than 1 hour), and increase the Fe that adds waste water
2+Amount.
The iron plane flower that operation consumes should in time replenish, in order to avoid pre-treatment adds Fe
2+The requirement that amount does not reach technology.
Claims (1)
1, a kind of pretreatment process that overcomes the murder by poisoning of marsh gas fermentation of molasses containing waste water sulphur is characterized in that establishing one and fills the pretreatment pool that iron plane is spent before the biogas fermentation transposition, its volume is:
Utilize the acid of waste water and be aided with ingress of air oxidation corrosion iron plane flower, with Fe
2+Be dissolved in the waste water, spend the time of ingress of air to increase or reduce the Fe that dissolves in waste water by increasing or reduce iron plane
2+Amount makes waste water add Fe
2+Amount and waste water SO
4 2-The content equivalent equal substantially, enter fermentation unit again and carry out biogas fermentation, the iron plane flower that operation consumes should in time replenish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93110816A CN1059645C (en) | 1993-01-11 | 1993-01-11 | Iron method for preptreatment for marsh gas fermentation of molasses containing waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93110816A CN1059645C (en) | 1993-01-11 | 1993-01-11 | Iron method for preptreatment for marsh gas fermentation of molasses containing waste water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1089579A CN1089579A (en) | 1994-07-20 |
| CN1059645C true CN1059645C (en) | 2000-12-20 |
Family
ID=4988639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93110816A Expired - Fee Related CN1059645C (en) | 1993-01-11 | 1993-01-11 | Iron method for preptreatment for marsh gas fermentation of molasses containing waste water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1059645C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705126B (en) * | 2009-07-28 | 2012-07-11 | 北京合百意可再生能源技术有限公司 | In-situ biogas coupling type long-acting desulfurizer |
| CN103102012B (en) * | 2011-11-10 | 2015-05-13 | 中国石油化工股份有限公司 | Anaerobic biochemistry treatment method for cellulose ethanol wastewater |
| CN103789351B (en) * | 2014-01-14 | 2016-04-20 | 中国科学院广州能源研究所 | A kind of method taking molasses as substrate and produce biological flue gas |
| CN105755051B (en) * | 2016-03-22 | 2019-10-29 | 李明阳 | The preparation method of biogas |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0041459A1 (en) * | 1980-06-02 | 1981-12-09 | Gouvernement Du Quebec | Process for the lixiviation of a niobium and/or tantalum ore containing calcium as main impurity |
| US4632759A (en) * | 1984-04-11 | 1986-12-30 | Purac Aktiebolag | Wastewater treatment method |
| CN1041744A (en) * | 1988-10-08 | 1990-05-02 | 崔健久 | The comprehensive utilization process of the poor liquid anaerobic treatment residuum of brewery |
| US5100553A (en) * | 1989-08-25 | 1992-03-31 | Ngk Insulators, Ltd. | Method for treating organic waste by methane fermentation |
-
1993
- 1993-01-11 CN CN93110816A patent/CN1059645C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0041459A1 (en) * | 1980-06-02 | 1981-12-09 | Gouvernement Du Quebec | Process for the lixiviation of a niobium and/or tantalum ore containing calcium as main impurity |
| US4632759A (en) * | 1984-04-11 | 1986-12-30 | Purac Aktiebolag | Wastewater treatment method |
| CN1041744A (en) * | 1988-10-08 | 1990-05-02 | 崔健久 | The comprehensive utilization process of the poor liquid anaerobic treatment residuum of brewery |
| US5100553A (en) * | 1989-08-25 | 1992-03-31 | Ngk Insulators, Ltd. | Method for treating organic waste by methane fermentation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1089579A (en) | 1994-07-20 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |