CN1431159A - Technique of two steps of anaerobic digestion for handling city garbage - Google Patents

Technique of two steps of anaerobic digestion for handling city garbage Download PDF

Info

Publication number
CN1431159A
CN1431159A CN03118038A CN03118038A CN1431159A CN 1431159 A CN1431159 A CN 1431159A CN 03118038 A CN03118038 A CN 03118038A CN 03118038 A CN03118038 A CN 03118038A CN 1431159 A CN1431159 A CN 1431159A
Authority
CN
China
Prior art keywords
jar
fermentation jar
acid
anaerobic digestion
methane
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.)
Granted
Application number
CN03118038A
Other languages
Chinese (zh)
Other versions
CN1220559C (en
Inventor
乔玮
曾光明
黄国和
袁兴中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan University
Original Assignee
Hunan University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hunan University filed Critical Hunan University
Priority to CNB031180388A priority Critical patent/CN1220559C/en
Publication of CN1431159A publication Critical patent/CN1431159A/en
Application granted granted Critical
Publication of CN1220559C publication Critical patent/CN1220559C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel

Landscapes

  • Treatment Of Sludge (AREA)
  • Processing Of Solid Wastes (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Abstract

A two-step anaerobic digestion process for treating city garbage includes screening, acidic fermenting for hydrolyzing and acidifying, regulating pH value, and methane fermenting for decomposing the macromoleculae into methane, CO2 and short-chain fatty acid, so generating marsh gas. Its advantages are high reaction efficiency, treating capacity and content of methane, and short fermenting time.

Description

Two step of municipal wastes Anaerobic Digestion technology
Technical field: the present invention relates to a kind of treatment process of municipal wastes anaerobic digestion, relate in particular to a kind of two step of municipal wastes Anaerobic Digestion technology.
Background technology: the organic content in the municipal wastes is higher, adopts Anaerobic Digestion that organic pollutant is converted into methane, can realize the recycling of municipal wastes.It is to utilize anaerobion that organism is converted into methane, carbonic acid gas and simple organism that municipal wastes is carried out Anaerobic Digestion.Wherein play a major role is acid-producing bacteria and methanogen two big floras.And acid-producing bacteria is different to environmental requirement with methanogen.Acid-producing bacteria is a facultative anaerobe to the subject range broad of environment, is suitable for surviving under sour environment, and is very fast to organism acidifying speed.And methanogen is strict anerobe, and is comparatively harsh to the acid-basicity requirement of environment, requires the environment of neutral meta-alkalescence, and product methane speed is slower, is the restriction stage of digestive process speed.Adopt traditional rubbish to make compost producing methane, produce acid and methanogen are finished anaerobic digestion in the homogeneous reaction device whole process, rubbish acid process formation lot of organic acids very easily suppresses the growth of methanogen.Acid-producing bacteria and methanogen are not in best envrionment conditions.Thereby having influenced the efficient of reactor, treatment effect is undesirable.Drawbacks limit such as its fermentation time is long, methane content is low, fluctuation of service the application of anaerobic digestion techniques in treatment of urban garbage.
Summary of the invention: technical problem to be solved by this invention is at problems of the prior art, a kind of two step of municipal wastes Anaerobic Digestion technology is provided, to satisfy acidication and of the different requirements of product methane phase anaerobion in the anaerobic digestion of refuse process to environment, by its required separately top condition is provided, make microorganism in the whole process of refuse treatment, bring into play maximum activity, improve the processing efficiency of reactor and the methane content of the biogas that produces.
Two step of municipal wastes Anaerobic Digestion technology of the present invention, be characterized in: will send into the acid-fermentation jar through the rubbish of screening, be hydrolyzed and acidifying, then the acidizing fluid after acidifying is sent into adjusting acid-basicity and rate of load condensate in the conciliation jar, to be transported to the methane fermentation jar through the acidizing fluid of reconciling again, in the methane fermentation jar, organism further decomposes generation biogas.
The concrete steps of two step of municipal wastes Anaerobic Digestion technology of the present invention are as follows:
(a) municipal wastes is carried out the sorting fragmentation, remove the material of wherein inorganics, impurity and biological degradability difference, being crushed to particle diameter is 5-15mm, and control C/N ratio is 25: 1-35: 1, the rubbish that fragmentation is good is sent into the acid-fermentation jar, reconciles solid content at 10-15%.
(b) in the acid-fermentation jar, start stirring system and heating unit, controlled temperature keeps constant temperature, sealing at 30-60 ℃, collects the gas that produces.
(c) acidizing fluid that rubbish is produced at acid-fermentation jar acidication pumps into and reconciles jar, and the pH value of reconciling acidizing fluid in reconciling jar is 6.5-7.5, COD CrBe 3000-7000mg/L.
(d) with pump the liquid in the regulating tank is pumped into the methane fermentation jar, keeps the interior temperature of methane fermentation jar at 30-60 ℃ of constant temperature, the gas that produces is collected in sealing.
As a further improvement on the present invention, the water outlet in the described methane fermentation jar can be transported to the acid-fermentation jar or reconcile jar, to reconcile the water ratio and the load of rubbish; The described rubbish that enters in the acid-fermentation jar is the organic waste through sorting, and organic content is more than 60%; Described methane fermentation jar is upflow anaerobic sludge blanket process (UASB); The interior reservation of described acid-fermentation jar becomes 20% amount as inoculum size with fresh feed.
Two step of municipal wastes provided by the invention Anaerobic Digestion is compared with traditional anaerobic digestion process, is characterized in that acidication with the anaerobic digestion of refuse whole process separated in different reactors with product two stages of methane to carry out.The reactor that separates has separately guaranteed that acid-producing bacteria and methanogen are in best envrionment conditions, the activity that performance is maximum.Acid process has improved the biodegradability of rubbish, and larger molecular organics is broken down into methane, carbonic acid gas and short chain fatty acid etc., and acidizing fluid provides suitable matrix mutually for methane.Avoided owing to forming the growth that a large amount of organic acids suppress methanogen at the product acid phase.Rate of load condensate by suitable controlling reactor can make the sour phase reactor of product and produce the mutual co-ordination of methane phase reactor.In this technology, system's operation is more stable, and the efficient of reactor is higher, and processing power is bigger, and methane content is higher, and fermentation time is shorter.
Description of drawings: Fig. 1 is a process route chart of the present invention.
Fig. 2 is a technical process simplified schematic diagram of the present invention.
1 is the acid-fermentation jar among Fig. 2, and 3 is regulating tank, and 5 is the methane fermentation jar, and 7 is gas holder, and 2,4,6 is liquid delivery pump.
Embodiment:
1,2 further specify embodiments of the present invention in conjunction with the accompanying drawings.
Embodiment 1
(a) gather new refuse and carry out sorting, remove inorganics wherein, component of refuse comprises food waste (55%), market rubbish (30%) and leaf weeds (10%) and other foreign material, organic content is 70%, the C/N ratio is 25: 1, and it is 10mm that wherein organism 20Kg is crushed to particle diameter, regulates solid content 15%; (b) rubbish is transported in the acid-fermentation jar 1 ferments, temperature is controlled at 35 ℃, constant temperature, and the collection and confinement of gases of generation is in gas holder 7; (c) acidizing fluid that produces is pumped into conciliation jar 3 through pump 2, use Na 2CO 3Reconcile to pH value 7.2, COD reconciling a jar interior acidizing fluid Cr5000mg/L; (d) will be transported to methane fermentation jar 5 through pump 4 through the acidizing fluid of reconciling, the methane fermentation jar adopts upflow anaerobic sludge blanket process (UASB), 35 ℃ of temperature controls, and constant temperature, the collection and confinement of gases of generation is in gas holder 7; (e) water outlet of methane fermentation jar is back to the acid-fermentation jar in order to regulate solid content and load (as shown in Figure 2) via pump 6, reaches 75%, methane content 70% through measuring organic removal rate.
Embodiment 2
(a) gather new refuse and carry out sorting, remove inorganics wherein, component of refuse comprises food waste (60%), market rubbish (20%) and leaf weeds (10%) and other foreign material, organic content is 75%, the C/N ratio is 30: 1, and it is 10mm that wherein organism 20Kg is crushed to particle diameter, regulates solid content 20%; (b) rubbish is transported in the acid-fermentation jar 1 ferments, temperature is controlled at 35 ℃, constant temperature, and the collection and confinement of gases of generation is in gas holder 7; (c) acidizing fluid that produces is pumped into conciliation jar 3 through pump 2, uses Na 2CO 3Reconcile to pH value 7, COD reconciling a jar interior acidizing fluid Cr5500mg/L; (d) will be transported to methane fermentation jar 5 through pump 4 through the acidizing fluid of reconciling then, the methane fermentation jar adopts upflow anaerobic sludge blanket process (UASB), and temperature is controlled at 35 ℃, constant temperature, and the collection and confinement of gases of generation is in gas holder 7; (e) water outlet of methane fermentation jar is back to the acid-fermentation jar in order to regulate solid content and load (as shown in Figure 2) via pump 6, reaches 70%, methane content 72% through measuring organic clearance.

Claims (6)

1, a kind of two step of municipal wastes Anaerobic Digestion technology, it is characterized in that: will send into the acid-fermentation jar through the rubbish of screening, be hydrolyzed and acidifying, then the acidizing fluid after acidifying is sent into adjusting acid-basicity and rate of load condensate in the conciliation jar, to be transported to the methane fermentation jar through the acidizing fluid of reconciling again, organism further decomposes generation biogas in the methane fermentation jar;
2, two step of municipal wastes Anaerobic Digestion technology according to claim 1, the concrete steps of this technology are:
(a) municipal wastes is carried out the sorting fragmentation, remove the material of wherein inorganics, impurity and biological degradability difference, being crushed to particle diameter is 5-15mm, and control C/N ratio is 25: 1-35: 1, the rubbish that fragmentation is good is sent into the acid-fermentation jar, reconciles solids content at 10-15%;
(b) in the acid-fermentation jar, start stirring system and heating unit, controlled temperature keeps constant temperature, sealing at 30-60 ℃, collects the gas that produces.
(c) acidizing fluid that rubbish is produced at acid-fermentation jar acidication pumps into and reconciles jar, and the pH value of reconciling acidifying liquid in reconciling jar is 6.5-7.5 and COD CrBe 3000-7000mg/L;
(d) with pump the liquid in the regulating tank is pumped into the methane fermentation jar, keeps the interior temperature of methane fermentation jar at 30-60 ℃ of constant temperature, the gas that produces is collected in sealing;
3, two step of municipal wastes Anaerobic Digestion technology according to claim 2, it is characterized in that: the water outlet in the methane fermentation jar can be transported to the acid-fermentation jar or reconcile jar.
4, according to claim 2,3 described two step of municipal wastes Anaerobic Digestion technologies, it is characterized in that the described organic content of the rubbish in the acid-fermentation jar that enters is more than 60%.
5, two step of municipal wastes Anaerobic Digestion technology according to claim 4 is characterized in that described methane fermentation jar is upflow anaerobic sludge blanket process (UASB).
6, two step of municipal wastes according to claim 5 Anaerobic Digestion technology is characterized in that keeping in the described acid-fermentation jar and becomes 20% amount as inoculum size with fresh feed.
CNB031180388A 2003-01-23 2003-01-23 Technique of two steps of anaerobic digestion for handling city garbage Expired - Fee Related CN1220559C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB031180388A CN1220559C (en) 2003-01-23 2003-01-23 Technique of two steps of anaerobic digestion for handling city garbage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB031180388A CN1220559C (en) 2003-01-23 2003-01-23 Technique of two steps of anaerobic digestion for handling city garbage

Publications (2)

Publication Number Publication Date
CN1431159A true CN1431159A (en) 2003-07-23
CN1220559C CN1220559C (en) 2005-09-28

Family

ID=4790740

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB031180388A Expired - Fee Related CN1220559C (en) 2003-01-23 2003-01-23 Technique of two steps of anaerobic digestion for handling city garbage

Country Status (1)

Country Link
CN (1) CN1220559C (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007059688A1 (en) * 2005-11-26 2007-05-31 Liguo Ma A method and an apparatus to produce biogas
CN101973796A (en) * 2010-10-19 2011-02-16 北京元黄科技有限公司 Organic waste treatment device and method
CN101987796A (en) * 2010-11-15 2011-03-23 天津市庆烁环保工程有限公司 Two-stage dry anaerobic fermentation process of Chinese medicine residue
CN101549905B (en) * 2009-05-07 2011-04-20 上海康振环境科技有限公司 Organic waste water anaerobic treatment method
CN102492728A (en) * 2011-12-02 2012-06-13 同济大学 Rancidity-prone waste biogas utilization method based on in-subarea inoculation and quick start
WO2012075756A1 (en) * 2010-12-09 2012-06-14 潍坊金丝达实业有限公司 Resource utilizing method of refuses in urban and rural
US8329455B2 (en) 2011-07-08 2012-12-11 Aikan North America, Inc. Systems and methods for digestion of solid waste
CN104130942A (en) * 2014-07-21 2014-11-05 哈尔滨工业大学宜兴环保研究院 Agricultural organic waste anaerobic fermentation recovery biogas reaction apparatus and recovery method thereof
CN104372030A (en) * 2014-10-20 2015-02-25 天津大学 Method for coproducing hydrogen gas and methane by sludge-kitchen waste mixed fermentation
CN105062869A (en) * 2015-07-31 2015-11-18 符放中 Zero-residue biogas fermentation apparatus and application and biogas production method thereof
CN106282245A (en) * 2016-03-23 2017-01-04 香港生产力促进局 Novel organic waste resource reuse method and system
CN107629947A (en) * 2017-11-08 2018-01-26 中国农业大学 A kind of method and device of biomethanation and synchronized desulfuring
CN109401947A (en) * 2018-10-23 2019-03-01 上海市政工程设计研究总院(集团)有限公司 A kind of sludge and kitchen garbage are total to digestive system and its operation method
CN114289454A (en) * 2022-01-11 2022-04-08 浙江工商大学 Perishable garbage anaerobic fermentation device and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101314551B (en) * 2007-06-01 2011-12-14 中国科学院过程工程研究所 Apparatus and method for producing sludge gas with organic castoff

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007059688A1 (en) * 2005-11-26 2007-05-31 Liguo Ma A method and an apparatus to produce biogas
CN101549905B (en) * 2009-05-07 2011-04-20 上海康振环境科技有限公司 Organic waste water anaerobic treatment method
CN101973796A (en) * 2010-10-19 2011-02-16 北京元黄科技有限公司 Organic waste treatment device and method
CN101987796A (en) * 2010-11-15 2011-03-23 天津市庆烁环保工程有限公司 Two-stage dry anaerobic fermentation process of Chinese medicine residue
CN101987796B (en) * 2010-11-15 2013-01-30 天津市庆烁环保工程有限公司 Two-stage dry anaerobic fermentation process of Chinese medicine residue
WO2012075756A1 (en) * 2010-12-09 2012-06-14 潍坊金丝达实业有限公司 Resource utilizing method of refuses in urban and rural
US9776224B2 (en) 2010-12-09 2017-10-03 Weifang Jinsida Industrial Co. Ltd. Method of utilizing refuses in urban and rural
US9328323B2 (en) 2011-07-08 2016-05-03 Aikan North America, Inc. Systems and methods for digestion of solid waste
US8329455B2 (en) 2011-07-08 2012-12-11 Aikan North America, Inc. Systems and methods for digestion of solid waste
US8492134B2 (en) 2011-07-08 2013-07-23 Aikan North America, Inc. Systems and methods for digestion of solid waste
CN102492728A (en) * 2011-12-02 2012-06-13 同济大学 Rancidity-prone waste biogas utilization method based on in-subarea inoculation and quick start
CN102492728B (en) * 2011-12-02 2014-05-21 同济大学 Rancidity-prone waste biogas utilization method based on in-subarea inoculation and quick start
CN104130942A (en) * 2014-07-21 2014-11-05 哈尔滨工业大学宜兴环保研究院 Agricultural organic waste anaerobic fermentation recovery biogas reaction apparatus and recovery method thereof
CN104130942B (en) * 2014-07-21 2016-03-09 哈尔滨工业大学宜兴环保研究院 Agricultural organic waste anaerobically fermenting reclaims biogas reaction unit and recovery method
CN104372030A (en) * 2014-10-20 2015-02-25 天津大学 Method for coproducing hydrogen gas and methane by sludge-kitchen waste mixed fermentation
CN105062869A (en) * 2015-07-31 2015-11-18 符放中 Zero-residue biogas fermentation apparatus and application and biogas production method thereof
CN106282245A (en) * 2016-03-23 2017-01-04 香港生产力促进局 Novel organic waste resource reuse method and system
CN106282245B (en) * 2016-03-23 2023-06-02 香港生产力促进局 Novel organic garbage recycling method and system
CN107629947A (en) * 2017-11-08 2018-01-26 中国农业大学 A kind of method and device of biomethanation and synchronized desulfuring
CN107629947B (en) * 2017-11-08 2023-09-15 中国农业大学 Method and device for biological methane production and synchronous desulfurization
CN109401947A (en) * 2018-10-23 2019-03-01 上海市政工程设计研究总院(集团)有限公司 A kind of sludge and kitchen garbage are total to digestive system and its operation method
CN109401947B (en) * 2018-10-23 2023-10-20 上海市政工程设计研究总院(集团)有限公司 Sludge and kitchen waste co-digestion system and operation method thereof
CN114289454A (en) * 2022-01-11 2022-04-08 浙江工商大学 Perishable garbage anaerobic fermentation device and method

Also Published As

Publication number Publication date
CN1220559C (en) 2005-09-28

Similar Documents

Publication Publication Date Title
US11453607B2 (en) Process for enhanced anaerobic digestion of sludge by alcoholization of food waste
US4696746A (en) Two phase anaerobic digestion
CN1220559C (en) Technique of two steps of anaerobic digestion for handling city garbage
CN102321675B (en) Method and device for producing bio-gas by organic waste
CN100532531C (en) Device for co-producing hydrogen and methane by biomass and solid organic waste fermenting method
CN101830744A (en) Method for simultaneously producing electric fertilizer by mixing and continuous dry fermentation of raw materials with complementary characteristics
WO2011080766A2 (en) Combined dry and wet dual phase anaerobic process for biogas production
CN104099374A (en) Method for producing methane through mixed slaking of straw stalks subjected to alkali treatment and surplus sludge
CN1269747C (en) Process for treating excess sludge
CN102168109A (en) Method for producing hydrogen and methane through continuous solid state fermentation of kitchen garbage
CN102557373A (en) Treatment method of excess sludge
KR100352811B1 (en) Methods for rapid digestion of food wastes and for methane production using three-stage methane fermentaion system
CN112626139A (en) Method and device for producing carbon source by using kitchen garbage
Youn et al. Comparative performance between temperaturephased and conventional mesophilic two-phased processes in terms of anaerobically produced bioenergy from food waste
CN102500608A (en) Anaerobic treatment process for high-concentration kitchen waste
CN109401947B (en) Sludge and kitchen waste co-digestion system and operation method thereof
CN1858213A (en) Method for co-producing hydrogen and methane by biomass and solid organic waste fermenting method
CN106282245B (en) Novel organic garbage recycling method and system
CN109207345B (en) Device and process for coupling corn straw ethanol fermentation with municipal sludge anaerobic co-digestion
CN104862342A (en) Method for producing methane by using sludge to regulate fruit and vegetable wastes to reinforce single-phase fermentation
CN114535246B (en) Device and process for enhancing two-phase anaerobic digestion by using Fenton iron mud and iron-containing biochar
CN103243123A (en) Novel recycling technology for high-value conversion of tubers vinasse
CN104892039A (en) Method used for converting kitchen solid residue into biologic bacterium preparations
CN102618436B (en) Anaerobic fermentation treatment system and method of solid and liquid waste
CN111807637B (en) Reaction device and method for producing PHA (polyhydroxyalkanoate) by recycling organic matter mainstream of beer wastewater

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
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