CN108285255A - A kind of processing method of the ice cream dregs of fat - Google Patents
A kind of processing method of the ice cream dregs of fat Download PDFInfo
- Publication number
- CN108285255A CN108285255A CN201710015499.7A CN201710015499A CN108285255A CN 108285255 A CN108285255 A CN 108285255A CN 201710015499 A CN201710015499 A CN 201710015499A CN 108285255 A CN108285255 A CN 108285255A
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- Prior art keywords
- dregs
- fat
- biogas
- methane production
- ice cream
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P5/00—Preparation of hydrocarbons or halogenated hydrocarbons
- C12P5/02—Preparation of hydrocarbons or halogenated hydrocarbons acyclic
- C12P5/023—Methane
-
- 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)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Zoology (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Wood Science & Technology (AREA)
- General Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Biochemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Microbiology (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Biotechnology (AREA)
- Molecular Biology (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)
- Treatment Of Sludge (AREA)
Abstract
The present invention provides a kind of processing method of the dregs of fat generated in ice cream wastewater treatment process, ice cream dregs of fat biogas heater is heated, enter acidification pool after heating, the organic matter of macromolecular long-chain in the dregs of fat is first converted into volatile fatty acid by the anaerobic reaction that acidification flora generates, using the decomposition in acidification flora, volatile fatty acid is converted into the organic matter that easily decomposes or can directly be utilized by methanogen, anaerobic methane production tank is entered later, organic matter is converted into biogas by the methanogen floras in methane tank, solid and liquid are separated in sedimentation basin, produced biogas returns to biogas heater for heating the dregs of fat.The present invention is simple, efficient, environmentally friendly, and application prospect is good.
Description
Technical field
Process field the invention belongs to the waste oil residue generated in sewage disposal process, especially a kind of ice cream
The processing method of the dregs of fat generated in wastewater treatment process.
Background technology
In ice cream wastewater treatment process, oil removal or air-float technology unit will produce a large amount of dregs of fat, typically transport outward
Landfill disposal increases transportation cost and processing cost, and maximum problem is post-processing problem, and landfill leachate increases, place
It is big to manage difficulty.
Invention content
In view of the above problems, the purpose of the present invention is to provide a kind of processing method of the ice cream dregs of fat, the ice cream dregs of fat
It is COD by this method treated product（COD）Water less than 500 and biogas.This method is simple, efficiently, ring
It protects, application prospect is good.
The technical solution adopted by the present invention is：A kind of processing method of the ice cream dregs of fat, it is characterised in that it is main include with
Lower specific steps：
（1）The dregs of fat that the oil removal of ice cream waste water or air-float technology unit generate are poured into oil storage pool, are dived under water with being arranged in oil storage pool
Blender is stirred the dregs of fat, avoids luming.
（2）The dregs of fat are delivered to biogas heater with screw pump, the dregs of fat enter from the side lower part of biogas heater, biogas from
Biogas heater base, which enters in burner, burns.Rise from the upper lateral part of biogas heater after heating and flows into next list
Member.After dregs of fat temperature increases, to subsequent anaerobic bacteria flora, a good temperature environment is provided；
（3）The dregs of fat heated by biogas heater enter acidification pool, and acidification flora is placed in acidification pool, are to prevent in acidification pool
Dregs of fat caking setting submersible agitating, stirring can be such that bottom sludge and water solution acidification flora comes into full contact with, improve the efficiency of flora, be acidified
The organic matter of macromolecular long-chain in the dregs of fat is first converted into volatile fatty acid by the anaerobic reaction that flora generates, using acidification bacterium
Volatile fatty acid, is converted into acetic acid, ethyl alcohol, carbonic acid, hydrogen, formic acid and first by the decomposition of the hydrogen-producing acetogens in group
The organic matter that alcohol etc. is easily decomposed or can directly be utilized by methanogen.Anaerobism is entered after the cave of debouchure in centre position
Methane phase tank A；
（4）It is placed with methanogen floras in anaerobic methane production tank A, it can be acetic acid, ethyl alcohol, carbonic acid, hydrogen, formic acid and methanol etc.
It is converted into biogas, anaerobic methane production tank B is entered after the cave of debouchure in centre position；
（5）Methanogen floras in anaerobic methane production tank B can further decompose organic matter.By top water outlet overflow
To sedimentation basin；
（6）Solid and liquid are separated in sedimentation basin, granule sludge of the solid based on anaerobic bacteria flora, proportion is larger, is deposited to
Pool bottom, liquid are CODs（COD）Lower sewage, is directly discharged into the regulating reservoir of sewage disposal.Sedimentation basin
Receipts bucket is arranged at bottom, is compressed to sludge, and setting screw pump is the sludge reflux of compression to anaerobic methane production tank（A）It is interior；
（7）Biogas is generated in acidification pool, anaerobic methane production tank A and anaerobic methane production tank B, by the pipeline at the top of pond body
It collects, it is most of to remove torch burning to the heating dregs of fat, remainder in biogas heater after first passing through water sealed tank.
Step（1）Described in the dregs of fat are heated with biogas, 20-35 DEG C of heating temperature；Step（3）Described in oil
Slag is 120h in the acidification pool residence time；Step（4）Described in the dregs of fat the anaerobic methane production tank A residence times be 240h；Step
Suddenly（5）Described in the dregs of fat the anaerobic methane production pond B residence times be 240h, so the flora of acidification pool is with hydrolysis acidification flora
Based on, relatively low practical measure of PH reaches 4-6.5.
The present invention has following advantages and extremely long-pending effect：Simply, efficiently, environmental protection, application prospect is good.
Description of the drawings
Attached drawing 1 is a kind of process flow figure of the ice cream dregs of fat.
Specific implementation mode
The present invention is described further for the embodiment provided below in conjunction with the accompanying drawings.1 is oil storage pool in figure, and 2 be biogas
Heater, 3 be acidification pool, and 4 be anaerobic methane production pond A, and 5 be anaerobic methane production pond B, and 6 be sedimentation basin, and 7 be water sealed tank.
The air supporting dregs of fat pond dregs of fat enter oil storage pool 1, and water quality is COD（COD）=284500mg/L, by oil storage
1 stirring action of pond is transported to biogas heater 2 by screw pump.The dregs of fat are for 24 hours in the residence time of oil storage pool 1.Pass through natural pond
After hot-air heater 2, biogas heater 2 is vertical normal-pressure water-heating boiler, and dregs of fat temperature rises to 28 DEG C by 10 DEG C, COD
（COD）Do not change, the dregs of fat flow into acidification pool 3 certainly.The bacterial classification in acidified pond 3 and processing, COD（COD）
It is substantially reduced as 64800mg/L, the dregs of fat enter anaerobic methane production tank A4 after the cave of debouchure in centre position.The dregs of fat are in acid
Change 3 residence time of pond is 120h.By 4 inside bacterial classifications of anaerobic methane production tank A and processing, COD（COD）Drop
Low is 42590mg/L, and the dregs of fat enter anaerobic methane production pond B 5 after the cave of debouchure in centre position.The dregs of fat are produced in anaerobism
4 residence times of methane tank A are 240h.By bacterial classification inside the B5 of anaerobic methane production pond and processing, COD（COD）
It is reduced to 11815mg/L, the dregs of fat enter sedimentation basin 6 after the effluent weir on top.The dregs of fat stop in anaerobic methane production pond B5
It is 240h to stay the time.The dregs of fat are separated by solid-liquid separation in sedimentation basin 6, and solid is deposited to pool bottom, the water outlet that liquid passes through top
Mouth enters the regulating reservoir of sewerage.It arrives here, dregs of fat COD（COD）Become 370.2 mg/L, has been changed to dirt
Water, by follow-up Aerobic biological process, you can reach discharge standard.Sludge under precipitation will pass through the receipts bucket of sludge mud bottom
Sludge is compressed, 4 anaerobic methane production tank A are then flowed back by screw pump conveying, to supplement 4 anaerobic methane production tank A's
Sludge loses.The surface loading of 6 sedimentation basins is 0.8m/h.3 anaerobic methane production pond A 4 of acidification pool and 5 ponds anaerobic methane production pond B
Body is sealing, and water sealed tank 7 can be transported to by the biogas pipeline at the top of pond body by generating biogas, and the effect of water sealed tank 7 is to prevent
It is tempered during biogas combustion, causes explosion or other danger.By the biogas almost all of water sealed tank to biogas heater 2
For heating the dregs of fat, biogas output is higher after system stable operation, can have remaining biogas, go torch burning or reuse.
Claims (5)
1. a kind of processing method of the ice cream dregs of fat, it is characterised in that carry out according to the following steps：
（1）The dregs of fat that the oil removal of ice cream waste water or air-float technology unit generate are poured into oil storage pool 1, it is latent with setting in oil storage pool 1
Water mixer is stirred the dregs of fat, avoids luming；（2）The dregs of fat are delivered to biogas heater 2 with screw pump, the dregs of fat are from biogas
The side lower part of heater 2 enters, and biogas, which is entered from 2 bottom of biogas heater in burner, to burn；After heating rise from
The upper lateral part of biogas heater flows into next unit；After dregs of fat temperature increases, to subsequent anaerobic bacteria flora, one is provided very well
Temperature environment；（3）The dregs of fat heated by biogas heater enter acidification pool 3, and acidification flora is placed in acidification pool 3, are acidified
To prevent dregs of fat caking that submersible agitating is arranged in pond 3, stirring can be such that bottom sludge and water solution acidification flora comes into full contact with, improve flora
Efficiency, the organic matter of macromolecular long-chain in the dregs of fat is first converted into volatile fatty acid by the anaerobic reaction that acidification flora generates,
Using acidification flora in hydrogen-producing acetogens decomposition, volatile fatty acid be converted into acetic acid, ethyl alcohol, carbonic acid,
The organic matter that hydrogen, formic acid and methanol etc. are easily decomposed or can directly be utilized by methanogen, by the cave of debouchure in centre position
Anaerobic methane production tank A 4 is entered later；（4）It is placed with methanogen floras in anaerobic methane production tank A 4, it can be acetic acid, second
Alcohol, carbonic acid, hydrogen, formic acid and methanol etc. are converted into biogas, and anaerobic methane production is entered after the cave of debouchure in centre position
Tank B 5；（5）Methanogen floras in anaerobic methane production tank B 5 can further decompose organic matter, by top water outlet
Overflow to sedimentation basin 6；（6）Solid and liquid are separated in sedimentation basin 6, granule sludge of the solid based on anaerobic bacteria flora, proportion
It is larger, it is deposited to pool bottom, liquid is COD（COD）Lower sewage is directly discharged into the adjusting of sewage disposal
In pond, receipts bucket is arranged at sedimentation basin bottom, is compressed to sludge, and setting screw pump is the sludge reflux of compression to anaerobic methane production
In tank A 4；（7）Biogas is generated in acidification pool 3, anaerobic methane production tank A 4 and anaerobic methane production tank B 5, by being located at pond body top
The pipeline in portion is collected, most of to go torch to fire to the heating dregs of fat, remainder in biogas heater 2 after first passing through water sealed tank 7
It burns.
2. according to the processing method of the ice cream dregs of fat described in claim 1, it is characterised in that step（1）Described in use natural pond
Gas heats the dregs of fat, 20-35 DEG C of heating temperature.
3. according to the processing method of the ice cream dregs of fat described in claim 1, it is characterised in that step（3）Described in the dregs of fat
It is 80-120h in 3 residence time of acidification pool.
4. according to the processing method of the ice cream dregs of fat described in claim 1, it is characterised in that step（4）Described in the dregs of fat
It is 160-240h in 4 residence times of anaerobic methane production tank A.
5. according to the processing method of the ice cream dregs of fat described in claim 1, it is characterised in that step（5）Described in the dregs of fat
In anaerobic methane production pond, 5 residence times of B are 160-240h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710015499.7A CN108285255A (en) | 2017-01-10 | 2017-01-10 | A kind of processing method of the ice cream dregs of fat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710015499.7A CN108285255A (en) | 2017-01-10 | 2017-01-10 | A kind of processing method of the ice cream dregs of fat |
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| Publication Number | Publication Date |
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| CN108285255A true CN108285255A (en) | 2018-07-17 |
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| CN201710015499.7A Pending CN108285255A (en) | 2017-01-10 | 2017-01-10 | A kind of processing method of the ice cream dregs of fat |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101622211A (en) * | 2007-02-27 | 2010-01-06 | 国立大学法人静冈大学 | The manufacture method of the fertilizer in cake treatment apparatus, dregs of fat treatment process and dregs of fat source |
| CN104310714A (en) * | 2014-11-03 | 2015-01-28 | 广西龙道环保工程有限责任公司 | System for processing breeding and slaughtering sewage and technology for system |
| CN105080931A (en) * | 2015-07-29 | 2015-11-25 | 北京建研环保设备有限公司 | Treatment method for oil residue generated during sewage treatment process for dairy products |
| CN106145549A (en) * | 2016-08-25 | 2016-11-23 | 江苏环球环境工程集团有限公司 | A kind of processing means of oily waste water |
-
2017
- 2017-01-10 CN CN201710015499.7A patent/CN108285255A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101622211A (en) * | 2007-02-27 | 2010-01-06 | 国立大学法人静冈大学 | The manufacture method of the fertilizer in cake treatment apparatus, dregs of fat treatment process and dregs of fat source |
| CN104310714A (en) * | 2014-11-03 | 2015-01-28 | 广西龙道环保工程有限责任公司 | System for processing breeding and slaughtering sewage and technology for system |
| CN105080931A (en) * | 2015-07-29 | 2015-11-25 | 北京建研环保设备有限公司 | Treatment method for oil residue generated during sewage treatment process for dairy products |
| CN106145549A (en) * | 2016-08-25 | 2016-11-23 | 江苏环球环境工程集团有限公司 | A kind of processing means of oily waste water |
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Application publication date: 20180717 |
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