CN104326621A - Method for producing biogas by using starch waste water - Google Patents
Method for producing biogas by using starch waste water Download PDFInfo
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- CN104326621A CN104326621A CN201410548287.1A CN201410548287A CN104326621A CN 104326621 A CN104326621 A CN 104326621A CN 201410548287 A CN201410548287 A CN 201410548287A CN 104326621 A CN104326621 A CN 104326621A
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- biogas
- sewage
- waste water
- 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
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
- C10L3/102—Removal of contaminants of acid contaminants
- C10L3/103—Sulfur containing contaminants
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
- C10L3/106—Removal of contaminants of water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F3/02—Aerobic processes
-
- 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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- 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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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a method for producing biogas by using starch waste water, the waste water passes through an equalizing tank, a heating backflow well and an anaerobic pond in order, biogas and sewage can be fermented and separated in the anaerobic pond, biogas enables temporary storage in a temporary storage pot, then is processed in a desulphurization and dehydration apparatus, the desulfurated and dehydrated biogas is introduced in a compressor for compressing to high pressure biogas, and is stored in a high pressure biogas pack, and then finally introduced in a boiler combustion system; sewage is flowed in a primary aerobic tank, a settling basin, a secondary aerobic tank and a final sedimentation tank for processing in order, finally water which reaches the standard is flowed out through a pipe on the final sedimentation tank, and the sewage in the desulphurization and dehydration apparatus flows into the primary aerobic tank, the settling basin, the secondary aerobic tank and the final sedimentation tank for processing. According to the invention, waste water COD discharge capacity is reduced, water environment is improved, adverse influence of direct discharge of biogas to environment can be reduced, environment is improved, energy is recovered, production cost is reduced, energy saving and emission reduction effect can be good, and sustainable development capability can be created.
Description
Technical field
The present invention relates to energy regeneration technical field, be specifically related to utilize starch wastewater to produce the system of biogas.
Background technology
According to the incomplete statistics of Chinese starch industry association, the total starch output in 2010 1973.66 ten thousand tons in Eleventh Five-Year Plan latter stage, deep processed product total amount 1118.09 ten thousand tons, all overfulfils Eleventh Five-Year Plan index.Output compared with " 15 " latter stage, total starch increase of production 78%; Deep processed product total amount increases by 134.5%, but wherein modified starch only completes 83% of planning.Energy consumption is compared with " 15 ", the water of various starch and deep processed product, electricity, vapour consumption all have reduction in various degree, as produced the W-Gum enterprise of more than 100,000 tons per year, 2010 compared with 2005, corn unit consumption have dropped 5.4%, and the consumption of water, electricity, vapour have dropped 5.2%, 3.3% and 23% respectively.Even so, compared with world level, the energy consumption of starch processing industry, water consume and pollutant emission index all also has a certain distance.
In the starch course of processing, produce a large amount of high-concentration acidic wastewater organic waste water, mainly deliquescent starch and a small amount of protein, generally do not have toxicity, but COD is very high, is generally 10000 ~ 25000mg/L, and SS is 3000 ~ 4000mg/L.Sewage disposal difficulty is large, puts into operation costly, if by direct discharging of waste water in environment water, not only cause serious harm to environment, also causes the waste of water resources.In sewage treatment anaerobic reaction process, will produce a large amount of biogas, directly discharging not only External Environment increases carbon emission, and biogas is as the energy, does not add the policy that utilization does not also meet national energy-saving reduction of discharging.
Summary of the invention
The object of this invention is to provide the system utilizing starch wastewater to produce biogas, both processed trade effluent and protected environment, and can the energy have been recycled again, reduce production cost.
In order to solve the problem existing for background technology, the present invention is by the following technical solutions: utilize starch wastewater to produce the system of biogas, according to the sequencing of wastewater treatment, described waste water is successively through equalizing tank, reflux well, anaerobic pond, in described anaerobic pond, biogas and sewage are isolated in fermentation, described biogas enters temporary storage tank and keeps in, enter desulfurization dewatering device further to process, described biogas after desulfurization dewatering enters compressor compresses again and becomes High-pressure Marsh Gas, be stored in high pressure methane gas bag, finally enter boiler combustion system; Described sewage flows into successively in one-level Aerobic Pond, settling bowl, secondary Aerobic Pond, final deposition pool and processes, water finally up to standard is flowed out by the adapter on described final deposition pool, and the sewage produced in described desulfurization dewatering device also flows in one-level Aerobic Pond, settling bowl, secondary Aerobic Pond, final deposition pool and processes.
Further, in described equalizing tank, PH is adjusted to 7 ~ 10.
Further, the instrument in described anaerobic pond comprises BYSB-plus reactor and triphase separator.
Further, described BYSB-plus reactor can be divided into four functional zone from bottom to top, i.e. the water inlet distribution device of Chi Ding, the Sludge Bed of bottom, the reaction zone at middle part, the disengaging zone at top.
Further, described anaerobic pond leavening temperature is 30 ~ 65 DEG C; Fermentation time is 3 ~ 7 days.
Further, described boiler combustion system comprises boiler systems, soft water system processed, steam pockets, biogas pipeline, steam-pipe.
The present invention has following beneficial effect: reduce waste water COD quantity discharged, improve water surrounding; Reduce the in line detrimentally affect that environment is caused of biogas, environmental protect; Reclaim the energy, reduce production cost; Effects of energy saving and emission reduction is good, creates the ability of Sustainable Development of Enterprises.
Accompanying drawing explanation
Fig. 1 is workflow diagram of the present invention.
Embodiment
The present invention not only utilizes waste water to create biogas, and biogas combustion producing steam is back to production, also reduces sewage effluent COD concentration.Not only effectively make use of Methane Resources, eliminate the carbon emission that biogas increases environment; Save commodity purchased steam, indirectly reduce the coal-fired pollutent such as carbonic acid gas, sulfurous gas, oxynitride, flue dust to airborne release of heat power plant; In addition, due to through BYSB-plus reactor by organic matter degradation, waste disposal plant COD concentration is down to 45mg/L from original average 500mg/L.
Embodiment 1: reduce COD quantity discharged: sewage disposal effluent COD concentration is down to 45mg/L from original 500mg/L, by wastewater flow rate 144163 tons, by the present invention, reduces COD and discharges 144163 × (500-45) ÷ 1000000=66t/a.
Embodiment 2: reclaim biogas, save energy: the BYSB-plus reactor 1kg COD that often degrades can produce 700L biogas, and biogas generation is 0.7m
3/ kgCOD.The average COD concentration that this sink drainage enters waste water in BYSB-plus is 12000mg/L, clearance > 95%, then BYSB-plus effluent COD concentration < 600mg/L, by wastewater flow rate 481t/d, the COD maximum that then every day, BYSB-plus reactor was removed is (12000-600) × 481 ÷ 1000=5483kg COD/d, and biogas output is 5483 × 0.7=3838m
3/ d.
Embodiment 3: methane in sewage gas composition is 50%-70%, calculate by 60% herein, after the biogas combustion produced, producible calorific value is 3838 × 39.4 × 60%=90739MJ/d, by whole year production 350 days, the annual calorific value 90739 × 350=31759GJ produced because of combustion of methane, by boiler hot turnover ratio 92%, steam boiler adopts the 1.0MPa that steams, the saturation steam of 184 DEG C, its enthalpy is 2776kJ/kg, then the whole year can producing steam 31959GJ × 92% ÷ 2776kJ/kg=10525t.
Embodiment 4: electricity consumption of equipment rated output 122kW in the present invention, count 300 days working hours, 18 hours every days per year, rate of load condensate, by 0.7, increases current consumption 122 × 18 × 300 × 0.7=46.116 ten thousand kWh newly.
With the Production rate that flour charging capacity 19432 tons is produced, the energy-conservation comprehensive benefit feast-brand mark coal 10525 × 0.1286-46.116 × 3.3=1201tce/a of generation, amounts to and reduces to airborne release CO
22994 tons, SO
226.5 tons, NO
x50.83 tons, flue dust 4.73 tons.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, other amendments that those of ordinary skill in the art make technical scheme of the present invention or equivalently to replace, only otherwise depart from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of right of the present invention.
Claims (6)
1. utilize starch wastewater to produce the method for biogas, it is characterized in that, according to the sequencing of wastewater treatment, described waste water is successively through equalizing tank, reflux well, anaerobic pond, and in described anaerobic pond, biogas and sewage are isolated in fermentation, and described biogas enters temporary storage tank and keeps in, enter desulfurization dewatering device further to process, described biogas after desulfurization dewatering enters compressor compresses again and becomes High-pressure Marsh Gas, is stored in high pressure methane gas bag, finally enters boiler combustion method; Described sewage flows into successively in one-level Aerobic Pond, settling bowl, secondary Aerobic Pond, final deposition pool and processes, water finally up to standard is flowed out by the adapter on described final deposition pool, and the sewage produced in described desulfurization dewatering device also flows in one-level Aerobic Pond, settling bowl, secondary Aerobic Pond, final deposition pool and processes.
2. the method utilizing starch wastewater to produce biogas according to claim 1, it is characterized in that, in described equalizing tank, PH is adjusted to 7 ~ 10.
3. the method utilizing starch wastewater to produce biogas according to claim 1, it is characterized in that, the instrument in described anaerobic pond comprises BYSB-plus reactor and triphase separator.
4. the method utilizing starch wastewater to produce biogas according to claim 3, it is characterized in that, described BYSB-plus reactor can be divided into four functional zone from bottom to top, i.e. the water inlet distribution device of Chi Ding, the Sludge Bed of bottom, the reaction zone at middle part, the disengaging zone at top.
5. the starch wastewater that utilizes according to claim 1 or 3 produces the method for biogas, and it is characterized in that, described anaerobic pond leavening temperature is 30 ~ 65 DEG C; Fermentation time is 3 ~ 7 days.
6. the method utilizing starch wastewater to produce biogas according to claim 1, it is characterized in that, described boiler combustion method comprises boiler process, method for softening water processed, steam pockets, biogas pipeline, steam-pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410548287.1A CN104326621A (en) | 2014-10-17 | 2014-10-17 | Method for producing biogas by using starch waste water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410548287.1A CN104326621A (en) | 2014-10-17 | 2014-10-17 | Method for producing biogas by using starch waste water |
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| CN104326621A true CN104326621A (en) | 2015-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410548287.1A Pending CN104326621A (en) | 2014-10-17 | 2014-10-17 | Method for producing biogas by using starch waste water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108570480A (en) * | 2017-08-28 | 2018-09-25 | 东北师范大学 | A method of utilizing bean jelly powder processing waste water ferment preparation of sludge gas |
Citations (5)
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|---|---|---|---|---|
| JP3846131B2 (en) * | 1999-10-29 | 2006-11-15 | 栗田工業株式会社 | Anaerobic treatment method for starch production wastewater |
| CN102173508A (en) * | 2011-01-26 | 2011-09-07 | 广西必佳微生物工程有限责任公司 | Method for producing biogas for vehicles by utilizing high concentration organic wastewater and waste residues |
| CN202369470U (en) * | 2011-11-10 | 2012-08-08 | 复旦大学 | Starch wastewater biological treatment system |
| JP5151643B2 (en) * | 2008-04-16 | 2013-02-27 | 株式会社Ｉｈｉ | Starch manufacturing wastewater treatment facility and method |
| CN103011396A (en) * | 2011-09-20 | 2013-04-03 | 苏州必源环保工程有限公司 | Special anaerobic treatment reactor BYSB-plus for wheat starch and alcohol wastewater |
-
2014
- 2014-10-17 CN CN201410548287.1A patent/CN104326621A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3846131B2 (en) * | 1999-10-29 | 2006-11-15 | 栗田工業株式会社 | Anaerobic treatment method for starch production wastewater |
| JP5151643B2 (en) * | 2008-04-16 | 2013-02-27 | 株式会社Ｉｈｉ | Starch manufacturing wastewater treatment facility and method |
| CN102173508A (en) * | 2011-01-26 | 2011-09-07 | 广西必佳微生物工程有限责任公司 | Method for producing biogas for vehicles by utilizing high concentration organic wastewater and waste residues |
| CN103011396A (en) * | 2011-09-20 | 2013-04-03 | 苏州必源环保工程有限公司 | Special anaerobic treatment reactor BYSB-plus for wheat starch and alcohol wastewater |
| CN202369470U (en) * | 2011-11-10 | 2012-08-08 | 复旦大学 | Starch wastewater biological treatment system |
Non-Patent Citations (2)
| Title |
|---|
| 刘建广: "EGSB工艺处理淀粉废水及沼气高值利用", 《水处理技术》, vol. 37, no. 7, July 2011 (2011-07-01), pages 130 - 132 * |
| 李平: "厌氧(IC反应器)/好氧联用处理淀粉生产废水", 《中国给水排水》, vol. 25, no. 2, January 2009 (2009-01-01), pages 52 - 54 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108570480A (en) * | 2017-08-28 | 2018-09-25 | 东北师范大学 | A method of utilizing bean jelly powder processing waste water ferment preparation of sludge gas |
| CN108570480B (en) * | 2017-08-28 | 2021-12-03 | 东北师范大学 | Method for preparing biogas by fermenting bean jelly powder processing wastewater |
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Application publication date: 20150204 |