CN102557373A - Treatment method of excess sludge - Google Patents

Treatment method of excess sludge Download PDF

Info

Publication number
CN102557373A
CN102557373A CN2011102178575A CN201110217857A CN102557373A CN 102557373 A CN102557373 A CN 102557373A CN 2011102178575 A CN2011102178575 A CN 2011102178575A CN 201110217857 A CN201110217857 A CN 201110217857A CN 102557373 A CN102557373 A CN 102557373A
Authority
CN
China
Prior art keywords
excess sludge
food waste
treatment
changing food
treatment process
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.)
Pending
Application number
CN2011102178575A
Other languages
Chinese (zh)
Inventor
刘伟
苏锡波
叶挺进
郭五珍
黄剑明
梁咏梅
周亚梁
李益洪
程毅
雷明
陈金灿
夏海波
罗旺兴
黄禹坤
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.)
GUANGZHOU ZHIRUI ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
FOSHAN WATER GROUP Co Ltd
Sun Yat Sen University
Original Assignee
GUANGZHOU ZHIRUI ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
FOSHAN WATER GROUP Co Ltd
Sun Yat Sen 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 GUANGZHOU ZHIRUI ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd, FOSHAN WATER GROUP Co Ltd, Sun Yat Sen University filed Critical GUANGZHOU ZHIRUI ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
Priority to CN2011102178575A priority Critical patent/CN102557373A/en
Publication of CN102557373A publication Critical patent/CN102557373A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Treatment Of Sludge (AREA)

Abstract

The invention relates to the field of sludge treatment, in particular to a treatment method of excess sludge, which is used for treatment the excess sludge with low content of organic matters in a sewage treatment plant. The treatment method comprises the following steps of: performing ultrasonic pretreatment on the excess sludge; mixing the excess sludge after pretreatment with kitchen waste; and performing two-phase anaerobic process treatment on a mixture of the excess sludge and the kitchen waste. According to the treatment method of the excess sludge, disclosed by the invention, the ultrasonic pretreatment is firstly performed on the excess sludge with the low content of the organic matters for breaking microbial cell wall membranes and improving the mass concentration of dissolved COD (chemical oxygen demand) in the sludge; the excess sludge after the pretreatment is mixed with the kitchen waste according to a certain proportion, so that the characteristics of high content of the organic matters and abundant nutrition of the kitchen waste are fully utilized, the content of the organic matters and the carbon-nitrogen ratio in the sludge are improved, the biodegradability of the sludge is further improved, the operation is simple, the management is convenient, and the treatment method is suitable for the sludge treatment of large, medium and small-sized sewage treatment plants; and simultaneously, the treatment and the disposal of the kitchen waste can realize resource utilization.

Description

A kind of treatment process of excess sludge
Technical field
The present invention relates to field of sludge treatment, relate to a kind of excess sludge treatment process that sewage work handles low organic excess sludge that is used for especially.
Background technology
Since the nineties in 20th century, we develop rapidly the municipal sewage treatment cause.Along with the raising of wastewater treatment rate, the generation of sewage plant sludge also constantly increases.The problem of environmental pollution that mud produces becomes increasingly conspicuous, and how science, economic treatment and disposal mud as an environmental problem that needs to be resolved hurrily, more and more receive people's attention.
With Guangdong Province is example; By in by the end of September, 2010, the whole province's mud day output reaches 8000 tons (water ratio 80%), and 88% mud arrives water ratio about 80% through mechanical dehydration; Outward transport then; Do ultimate disposal with landfill, stacking mode, generally without innoxious and stabilization treatment, the degree of resource utilization is then lower.But the problem of wastewater treatment in China factory mud landfill is outstanding at present: the one, consume a large amount of land resourcess, and many cities are difficult to find new landfill yard; The 2nd, because than high yield, giving birth to, moisture percentage in sewage sludge oozes drop liquid and landfill gas in a large number, increase the risk of secondary pollution, and had potential safety hazard.Perfect along with the increasingly serious of mud environmental problem and China's relevant policies rules, existing sludge treatment disposal options will be eliminated.Anaerobic sludge digestion as energy-saving and emission-reduction, eco-friendly method, will be widelyd popularize and used in future.
Yet along with increasing substantially of town dweller's standard of living; Per day water consumption increases gradually; Add municipal sewage pipe network and build problems such as imperfection; By the trend that gradually reduces is arranged, cause the water inlet COD concentration of Sewage Plant on the low side even ultralow from the COD mass concentration of household effluent sewerage, this phenomenon is particularly general at China's southern area.Both influenced the normal operation of Sewage Plant; Make that again the excess sludge organic content that produces in the biochemical treatment process is very low; Simultaneously a lot of Sewage Plant (having built with newly-built) do not have preliminary sedimentation tank; And the C/N ratio in the excess sludge very low (4-5:1), organic content is low, so the shale of this kind mud does not far reach the optimum range (C/N=10-20:1) of anaerobic digestion; And the main ingredient of mud is a large amount of mikrobes, and the required organic substrate of anaerobically fermenting is included in the microbial cell film, and the rigid structure of cell envelope hinders and shielded the hydrolysis that is prone to degradation materials in the born of the same parents, has influenced the biodegradable of mud.Above-mentioned reason has hindered the application of sludge anaerobic fermentation on low organic excess sludge.
Summary of the invention
The invention provides a kind of excess sludge treatment process, can improve the organic content in the excess sludge, thereby improve the biodegradable of mud.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is:
A kind of treatment process of excess sludge may further comprise the steps: the ultrasonic pretreatment excess sludge; Pretreated excess sludge is mixed with changing food waste; The mixture of excess sludge and changing food waste is carried out the diphasic anaerobic technique processing.
Mixed fermentation measure through low organic excess sludge of ultrasonic pretreatment and changing food waste; Improve the organic content in the mixing sludge; Improve the biodegradable of mud greatly; Solve the bottleneck of low organic excess sludge anaerobically fermenting targetedly, improved the operation stability and the processing efficiency of total system.
Technical scheme of the present invention helps giving full play to the advantage of TPAD technology to the raising of improvement of mud argillaceous and organic content, and realization two is the division of labor, strain separating mutually.The acidication effect of producing mixing sludge in the acid mutually improves greatly, and the total organic volatile acid in the mud extraction can reach 2000-4000mgC 2H 40 2/ L, be total organic volatile acid concentration in this low independent hydrolysis acid-producing of organic excess sludge 3-8 doubly, and the pH in the reactor drum can be stabilized between the 4.75-5.50, do not have tangible acid accumulation, and follow-up product methane reaction is also had no influence; The activity of anaerobic sludge is very high in the methane-producing reactor, high specific produce methane speed can stable maintenance at 0.40LCH 4More than/g the VSSd, the general volatile organic acid in the mud extraction is less than 150mg C 2H 40 2/ L.
In addition; In the excess sludge treatment process of the present invention; TPAD technology can be stabilized in more than 40% organic clearance, can be stabilized in more than 80% the clearance that dissolves COD, and organism in the mud extraction and solvability COD content are low; On average between 12-13g/L and 1000-2000mg/L, be convenient to subsequent disposal.And the organic factor of created gase of system decomposition unit is high, can stablize to reach more than the 0.8L/gVSS, and biogas output is stable, helps the normal operation of follow-up marsh gas power generation equipment, in sludge reduction, realizes its recycling, reduces running cost.
Alternatively, excess sludge and changing food waste are according to organic mass ratio (1-3) wherein: 1 mixes, and corresponding volume ratio is (4-17): 1.Wherein, excess sludge is 1.5:1 with changing food waste blended The Best Mixed ratio for organism quality ratio.
Alternatively, the organic content of said excess sludge is 55-61%, and organism quality concentration is 15-20g/L.Low here organic excess sludge is the second pond mud after gravity concentrates, and its mud organic substance content is 58.19-60.68% with respect to total solids level (being VS/TS), and corresponding organism quality concentration is 15-20g/L.
Alternatively, the frequency of said ultrasonic treatment unit is 40kHz, and acoustic density is 0.25w/mL, and ultrasonic time is 30-45min.
As further improvement; Changing food waste mixes with excess sludge after pre-treatment again, and wherein, the pre-treatment of changing food waste comprises: divide the organism that selects bigger inorganics of particle and difficult degradation; Pulverize after filtering oil slick, add organic concentration that water is regulated changing food waste.Changing food waste can be putrescibility rubbish and the discarded food oils that places such as food-processing unit, diet operating unit, enterprises and institutions dining room and city resident family produce.Wherein, In the preprocessing process of said changing food waste; Adopt the method for heating to filter oil slick; And changing food waste is crushed to particle diameter is below the 1mm, and said changing food waste is 80-99.5% through pretreated organic content with respect to total solids level (being VS/TS), and organism quality concentration is 70-85g/L.
In the excess sludge treatment process of the low organic excess sludge producing methane through anaerobic fermentation of this improvement; Diphasic anaerobic technique is for intermittently advancing mud, spoil disposal intermittently; Mixing sludge is before getting into acidogenic reactor; At first in equalizing tank, regulate organic concentration of mixing sludge according to the volume ratio of organic concentration of mud and changing food waste and setting, the equalizing tank here plays and mixes and the effect of temporarily stored, does not have the special operating conditions requirement.Wherein, acidogenic reactor pond body is square or cylindrical vessel, can be steel or concrete material; The methane-producing reactor shape can be multiple, but avette reactor drum is comparatively idealized, and the speed of reacting is played a driving role.The reactor drum that in addition, can reach same anaerobically fermenting effect also is desirable.
As further improvement, when the mixture of said excess sludge and changing food waste carries out the diphasic anaerobic technique processing, be equipped with whipping appts in the two-phase reactor.Stir the degree of uniformity that can guarantee mixing of materials in the whole reactor on the one hand, also impel the biogas that produces in the reaction process constantly to rise on the other hand, get into and collect pipeline.
As further improvement, be equipped with heating unit, attemperator and sludge gas collecting device in the said two-phase reactor.Temperature is bigger to the influence of mikrobe, and the enzymatic reaction of biology is played an important role.Being provided with of attemperator can make homo(io)thermism in some temperature or scope; Sludge gas collecting device is convenient to collect biogas and is generated electricity, burner exhaust heat reuse heating mud.
Wherein, the TR of anaerobism mesophilic digestion is generally at 30-38 ℃, and in the present technique scheme, the temperature in the two-phase reactor is controlled between 33-37 ℃.
Preferably, the temperature in the said two-phase reactor is 35 ℃.Here, 35 ℃ is the optimum temperuture of microbial reaction, helps the carrying out of acidogenic fermentation reaction.Which temperature mesophilic digestion no matter be controlled at, and temperature must be constant, and fluctuation can not be above 1 ℃ up and down.
Compared with prior art, the invention has the beneficial effects as follows:
The treatment process of excess sludge of the present invention with the low organic excess sludge of ultrasonic pretreatment, cracks the microorganism wall film earlier, improves the dissolving COD mass concentration in the mud; Pretreated excess sludge of process and changing food waste have made full use of high, the nutritious characteristics of changing food waste organic content according to certain mixed, have improved organic content and the C/N ratio in the mud, thereby have improved the biodegradability of mud.
The inventive method is simple to operate, convenient management, and also the start time of TPAD reactor drum is short, is not only applicable to the sludge treatment of large-scale wastewater treatment plant, also is applicable to middle or small sewage treatment; While has also been realized recycling to the treatment and disposal of changing food waste.
Description of drawings
Fig. 1 is the process flow sheet of the treatment process of excess sludge of the present invention.
Embodiment
Be illustrated in figure 1 as the embodiment of the treatment process of excess sludge of the present invention, may further comprise the steps:
(1) ultrasonic pretreatment excess sludge;
(2) pretreated excess sludge is mixed with changing food waste;
(3) mixture with excess sludge and changing food waste carries out the diphasic anaerobic technique processing.
With the low organic excess sludge of ultrasonic pretreatment, crack the microorganism wall film earlier, improve the dissolving COD mass concentration in the mud; Pretreated excess sludge of process and changing food waste have made full use of high, the nutritious characteristics of changing food waste organic content according to certain mixed, have improved organic content and the C/N ratio in the mud, thereby have improved the biodegradability of mud.
Wherein, changing food waste is the pre-treatment such as organic concentration that 1mm is following, add water adjusting changing food waste through dividing the organism select the bigger inorganics of particle and difficult degradation, adopting method such as heating to filter oil slick, be crushed to particle diameter; Mixed excess sludge successively gets into equalizing tank, acidogenic reactor, methane-producing reactor and reacts product biogas, and the biogas of collecting at last generates electricity.
Embodiment one
The concentrated excess sludge VS that certain A/O of sewage work technology produces is 15.91g/L; The VS/TS value is 58.19%; Rubbish from cooking mainly is made up of rice, meat and a small amount of vegetables, and the VS value is 82.75g/L, and VS/TS (organic content/total solids level) is 99.22%; With mud after cracking 45 minutes under frequency 40kHz, the acoustic density 0.25w/mL; With after mass ratio (ratio of organism total mass) 1:1, the general 5:1 of volume ratio of changing food waste mix, its VS value is 24.41g/L according to excess sludge, and VS/TS can reach 70.53%.
At organic volumetric loading is 1.220kgVS/m 3Carry out the anaeration in normal temperature fermentation under the d, the pH that produces sour phase maintains about 4.75, and the general volatile organic acid is at 3500mgC 2H 40 2/ L, aerogenesis phase pH maintains about 7.03, and the general volatile organic acid is at 130mgC 2H 40 2Below/the L.System is 48% to organic clearance MV, and organism in the mud extraction and solvability COD MV are respectively 12.65g/L and 1540mg/L, and decomposing the organic gas production rate of unit is 0.81g/L, and the high specific methanogenesis activity that produces methane phase mud is 4.48LCH 4/ gVSSd, and system is stable in the treating processes, the acid accumulation sign do not occur.Wherein, the TR of anaerobism mesophilic digestion is generally at 30-38 ℃, and in the present embodiment, the temperature in the two-phase reactor is controlled between 33-37 ℃, as preferably, homo(io)thermism at 35 ℃.Temperature must be constant here, and fluctuation can not be above 1 ℃ up and down.
Embodiment two
Certain A of sewage work 2The concentrated excess sludge VS that/O technology produces is 18.02g/L, and the VS/TS value is 59.68%, and rubbish from cooking mainly is made up of rice, meat and a small amount of vegetables; The VS value is 75.60g/L; VS/TS (organic content/total solids level content) is 90%, with mud at frequency 40kHz., crack 30 minutes under the acoustic density 0.25w/mL after; Mass ratio (ratio of organism total mass) 1.5:1 according to excess sludge and changing food waste; After the general 6.3:1 of volume ratio mixed, its VS value was 25.18g/L, and VS/TS can reach 68.77%.
At organic volumetric loading is 1.260kgVS/m 3Carry out the anaeration in normal temperature fermentation under the d, the pH that produces sour phase maintains about 4.83, and the general volatile organic acid is at 3260mgC 2H 40 2/ L, aerogenesis phase pH maintains about 7.10, and the general volatile organic acid is at 130mgC 2H 40 2Below/the L.System is 50% to organic clearance MV, and organism in the mud extraction and solvability COD MV are respectively 12.50g/L and 1390mg/L, and decomposing the organic gas production rate of unit is 0.86g/L, and the high specific methanogenesis activity that produces methane phase mud is 4.66LCH 4/ gVSSd, and system is stable in the treating processes, the acid accumulation sign do not occur.Wherein, the TR of anaerobism mesophilic digestion is generally at 30-38 ℃, and in the present embodiment, the temperature in the two-phase reactor is controlled between 33-37 ℃, as preferably, homo(io)thermism at 35 ℃.Temperature must be constant here, and fluctuation can not be above 1 ℃ up and down.
Embodiment three
Certain A of sewage work 2The concentrated excess sludge VS that/O technology produces is 19.85g/L, and the VS/TS value is 60.68%, and rubbish from cooking mainly is made up of rice, meat and a small amount of vegetables; The VS value is 80.05g/L; VS/TS (organic content/total solids level) is 96.61%, with mud at frequency 40kHz., crack 30 minutes under the acoustic density 0.25w/mL after; Mass ratio (ratio of organism total mass) 3:1 according to excess sludge and changing food waste; After the general 12.1:1 of volume ratio mixed, its VS value was 24.62g/L, and VS/TS can reach 68.13%.
At organic volumetric loading is 1.222kgVS/m 3Carry out the anaeration in normal temperature fermentation under the d, the pH that produces sour phase maintains about 5.71, and the general volatile organic acid is at 1890mg C 2H 40 2/ L, aerogenesis phase pH maintains about 7.15, and the general volatile organic acid is at 130mg C 2H 40 2Below/the L.System is 46% to organic clearance MV, and organism in the mud extraction and solvability COD MV are respectively 13.25g/L and 1630mg/L, and decomposing the organic gas production rate of unit is 0.83g/L, and the high specific methanogenesis activity that produces methane phase mud is 4.50LCH 4/ gVSSd, and system is stable in the treating processes, the acid accumulation sign do not occur.Wherein, the TR of anaerobism mesophilic digestion is generally at 30-38 ℃, and in the present embodiment, the temperature in the two-phase reactor is controlled between 33-37 ℃, as preferably, homo(io)thermism at 35 ℃.Temperature must be constant here, and fluctuation can not be above 1 ℃ up and down.
In the embodiments of the invention scheme, all can do further improvement, when the mixture of excess sludge and changing food waste carries out the diphasic anaerobic technique processing, be equipped with whipping appts in the two-phase reactor.Stir the degree of uniformity that can guarantee mixing of materials in the whole reactor on the one hand, also impel the biogas that produces in the reaction process constantly to rise on the other hand, get into and collect pipeline.
Improvement further is equipped with heating unit, attemperator and sludge gas collecting device in the two-phase reactor.Temperature is bigger to the influence of mikrobe, and the enzymatic reaction of biology is played an important role.Being provided with of attemperator can make homo(io)thermism in some temperature or scope; Sludge gas collecting device is convenient to collect biogas and is generated electricity, burner exhaust heat reuse heating mud.

Claims (12)

1. the treatment process of an excess sludge is characterized in that, may further comprise the steps:
The ultrasonic pretreatment excess sludge;
Pretreated excess sludge is mixed with changing food waste;
The mixture of excess sludge and changing food waste is carried out the diphasic anaerobic technique processing.
2. the treatment process of excess sludge according to claim 1 is characterized in that: organic mass ratio is (1-3) in excess sludge and the changing food waste: 1.
3. the treatment process of excess sludge according to claim 2, it is characterized in that: organic mass ratio is 1.5:1 in excess sludge and the changing food waste.
4. the treatment process of excess sludge according to claim 1, it is characterized in that: the VS/TS of said excess sludge is 55-61%, organic concentration is 15-20g/L.
5. the treatment process of excess sludge according to claim 1, it is characterized in that: the frequency of said ultrasonic treatment unit is 40kHz, and acoustic density is 0.25w/mL, and ultrasonic time is 30-45min.
6. the treatment process of excess sludge according to claim 1; It is characterized in that: changing food waste mixes with excess sludge after pre-treatment again; Wherein, The pre-treatment of changing food waste comprises: divide the organism that selects bigger inorganics of particle and difficult degradation, pulverize behind the filtration oil slick, add organic concentration that water is regulated changing food waste.
7. the treatment process of excess sludge according to claim 6 is characterized in that: in the preprocessing process of said changing food waste, adopt the method for heating to filter oil slick, and changing food waste is crushed to particle diameter is below the 1mm.
8. the treatment process of excess sludge according to claim 6, it is characterized in that: the pretreated VS/TS of said changing food waste is 80-99.5%, organic concentration is 70-85g/L.
9. according to the treatment process of the arbitrary described excess sludge of claim 1-8, it is characterized in that: when the mixture of said excess sludge and changing food waste carries out the diphasic anaerobic technique processing, be equipped with whipping appts in the two-phase reactor.
10. the treatment process of excess sludge according to claim 9 is characterized in that: be equipped with heating unit, attemperator and sludge gas collecting device in the said two-phase reactor.
11. the treatment process of excess sludge according to claim 10 is characterized in that: the temperature in the said two-phase reactor is 33-37 ℃.
12. the treatment process of excess sludge according to claim 11 is characterized in that: the temperature in the said two-phase reactor is 35 ℃.
CN2011102178575A 2011-08-01 2011-08-01 Treatment method of excess sludge Pending CN102557373A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011102178575A CN102557373A (en) 2011-08-01 2011-08-01 Treatment method of excess sludge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011102178575A CN102557373A (en) 2011-08-01 2011-08-01 Treatment method of excess sludge

Publications (1)

Publication Number Publication Date
CN102557373A true CN102557373A (en) 2012-07-11

Family

ID=46404192

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011102178575A Pending CN102557373A (en) 2011-08-01 2011-08-01 Treatment method of excess sludge

Country Status (1)

Country Link
CN (1) CN102557373A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104745640A (en) * 2015-03-25 2015-07-01 桂林电子科技大学 Ultrasonic-assisted wet process anaerobic fermentation processing method for household refuse organics
CN105967482A (en) * 2016-06-27 2016-09-28 中冶华天工程技术有限公司 Municipal sludge double-phase anaerobic digestion biogas production pilot-scale test equipment
CN106380058A (en) * 2016-11-30 2017-02-08 黑龙江省科学院科技孵化中心 High and cold area high-temperature anaerobic sludge fermentation device system and control method thereof
CN108558158A (en) * 2017-12-20 2018-09-21 同济大学 A kind of bioremediation improving anaerobic digestion product dehydration property
CN110295201A (en) * 2019-06-26 2019-10-01 山东省科学院能源研究所 The method that ligno-cellulose hydrolysate prepares biogas
JP2019177332A (en) * 2018-03-30 2019-10-17 Jfeエンジニアリング株式会社 Mixed methane fermentation method of sewage sludge and garbage
CN110699388A (en) * 2019-11-18 2020-01-17 天津城建大学 Method for producing 2, 3-butanediol by using carbohydrate waste
CN112390487A (en) * 2020-10-29 2021-02-23 辽宁大学 Method for strengthening kitchen waste and sludge cooperative anaerobic digestion through ultrasonic pretreatment
CN113060918A (en) * 2021-03-29 2021-07-02 重庆大学 Method for zero-valent iron reinforcement of synergistic anaerobic digestion of excess sludge and landfill leachate
CN114107406A (en) * 2021-11-08 2022-03-01 北京工业大学 Method for strengthening acid production by co-digestion of kitchen waste and activated sludge through ultrasonic/temperature pretreatment

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101012096A (en) * 2007-01-29 2007-08-08 清华大学 Supersonic wave reinforcement sludge anaerobic digestion gas production method
CN102030456A (en) * 2010-11-09 2011-04-27 同济大学 Method for enhancing dry-process fermentation stability of sludge by adding kitchen waste
CN102060423A (en) * 2010-11-26 2011-05-18 哈尔滨工业大学 Method for acquiring denitrified carbon source by fermenting surplus sludge

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101012096A (en) * 2007-01-29 2007-08-08 清华大学 Supersonic wave reinforcement sludge anaerobic digestion gas production method
CN102030456A (en) * 2010-11-09 2011-04-27 同济大学 Method for enhancing dry-process fermentation stability of sludge by adding kitchen waste
CN102060423A (en) * 2010-11-26 2011-05-18 哈尔滨工业大学 Method for acquiring denitrified carbon source by fermenting surplus sludge

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104745640A (en) * 2015-03-25 2015-07-01 桂林电子科技大学 Ultrasonic-assisted wet process anaerobic fermentation processing method for household refuse organics
CN105967482A (en) * 2016-06-27 2016-09-28 中冶华天工程技术有限公司 Municipal sludge double-phase anaerobic digestion biogas production pilot-scale test equipment
CN106380058A (en) * 2016-11-30 2017-02-08 黑龙江省科学院科技孵化中心 High and cold area high-temperature anaerobic sludge fermentation device system and control method thereof
CN108558158A (en) * 2017-12-20 2018-09-21 同济大学 A kind of bioremediation improving anaerobic digestion product dehydration property
JP2019177332A (en) * 2018-03-30 2019-10-17 Jfeエンジニアリング株式会社 Mixed methane fermentation method of sewage sludge and garbage
JP7103577B2 (en) 2018-03-30 2022-07-20 Jfeエンジニアリング株式会社 Mixed methane fermentation method of sewage sludge and swill
CN110295201A (en) * 2019-06-26 2019-10-01 山东省科学院能源研究所 The method that ligno-cellulose hydrolysate prepares biogas
CN110699388A (en) * 2019-11-18 2020-01-17 天津城建大学 Method for producing 2, 3-butanediol by using carbohydrate waste
CN112390487A (en) * 2020-10-29 2021-02-23 辽宁大学 Method for strengthening kitchen waste and sludge cooperative anaerobic digestion through ultrasonic pretreatment
CN113060918A (en) * 2021-03-29 2021-07-02 重庆大学 Method for zero-valent iron reinforcement of synergistic anaerobic digestion of excess sludge and landfill leachate
CN114107406A (en) * 2021-11-08 2022-03-01 北京工业大学 Method for strengthening acid production by co-digestion of kitchen waste and activated sludge through ultrasonic/temperature pretreatment

Similar Documents

Publication Publication Date Title
Náthia-Neves et al. Anaerobic digestion process: technological aspects and recent developments
CN102557373A (en) Treatment method of excess sludge
Zhang et al. Effect of fermentation liquid from food waste as a carbon source for enhancing denitrification in wastewater treatment
Li et al. Advances in energy-producing anaerobic biotechnologies for municipal wastewater treatment
Zhu et al. Recent developments and future perspectives of anaerobic baffled bioreactor for wastewater treatment and energy recovery
CN101274860B (en) Processing method for changing restaurant and kitchen garbage into resource without environmental pollution
CN103508643B (en) Sewage sludge and kitchen waste treatment device and treatment method
US9567611B2 (en) Two-stage anaerobic digestion systems wherein one of the stages comprises a two-phase system
López-López et al. Influence of alkalinity and VFAs on the performance of an UASB reactor with recirculation for the treatment of Tequila vinasses
CN103509829B (en) A kind of method of changing food waste associating excess sludge fermentation acetic acid and butyric acid
Kim et al. Enhancement of hydrogen production by recycling of methanogenic effluent in two-phase fermentation of food waste
CN202369479U (en) Anaerobic sludge digestion treatment equipment
CN105238822A (en) Combined pretreatment method for producing short-chain volatile fatty acids by enhancing anaerobic fermentation of sludge
CN106915883A (en) A kind of minimizing of endogenous FNA pretreating sludges and process for reclaiming
Radjaram et al. Start up study of UASB reactor treating press mud for biohydrogen production
CN102604996B (en) Method for mixed fermentation of sludge disintegrated by low-strength ultrasonic wave and crop straws pretreated by fermentation broth and application of method
CN109401947B (en) Sludge and kitchen waste co-digestion system and operation method thereof
CN104862346A (en) Method for increasing yield of short chain fatty acid produced with excess sludge through enzyme and alkali combined pretreatment
CN102796778B (en) Method for removing kitchen grease by using calcium stearate generated through phase-split anaerase hydrolysis
Wu et al. Continuous pro-hydrogen by anaerobic fermentation of municipal sludge
US20180282770A1 (en) Methods and systems for converting volatile fatty acids to lipids
Ahmad et al. Microbial granules on reactors performance during organic butyrate digestion: clean production
CN102643000B (en) Method for improving semi-dry fermentation stability of municipal sludge by adding cassava vinasse
JP2006255538A (en) Method and apparatus for treatment of food waste
Malakahmad et al. Biomethanation of kitchen waste and sewage sludge in anaerobic baffled reactor

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20120711