CN104944699B - A kind of minimizing technology of grease factory waste water foul odour material - Google Patents
A kind of minimizing technology of grease factory waste water foul odour material Download PDFInfo
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- CN104944699B CN104944699B CN201510324670.3A CN201510324670A CN104944699B CN 104944699 B CN104944699 B CN 104944699B CN 201510324670 A CN201510324670 A CN 201510324670A CN 104944699 B CN104944699 B CN 104944699B
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- bioreactor
- waste water
- sedimentation basin
- water
- inlet pipe
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- 239000002351 wastewater Substances 0.000 title claims abstract description 121
- 239000000463 material Substances 0.000 title claims abstract description 33
- 239000004519 grease Substances 0.000 title claims abstract description 27
- 238000004062 sedimentation Methods 0.000 claims abstract description 83
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 239000010802 sludge Substances 0.000 claims abstract description 37
- 229910002651 NO3 Inorganic materials 0.000 claims abstract description 20
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims abstract description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000001301 oxygen Substances 0.000 claims abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 7
- 238000001556 precipitation Methods 0.000 claims abstract description 6
- 238000010992 reflux Methods 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 3
- 239000000126 substance Substances 0.000 claims description 23
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical group [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 8
- 239000003814 drug Substances 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 235000010333 potassium nitrate Nutrition 0.000 claims description 4
- 239000004323 potassium nitrate Substances 0.000 claims description 4
- 239000002244 precipitate Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 14
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 15
- 235000019198 oils Nutrition 0.000 description 15
- 241000196324 Embryophyta Species 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 241000931143 Gleditsia sinensis Species 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000003694 hair properties Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Activated Sludge Processes (AREA)
Abstract
A kind of minimizing technology of grease factory waste water foul odour material, belongs to environmental protection technical field.Including：It is equipped with the equipment for removing oil wastewater foul odour material；Grease factory waste water is entered into bioreactor by closed conduit from bioreactor bottom, waste water launches nitrate into waste water while entering bioreactor, and start mixer in bioreactor and stir, carry out biological respinse processing, control below dissolved oxygen 0.2mg/L in bioreactor, bioreactor uses sludge reflux, and it is 2000 6000mg/L to control sludge concentration in bioreactor, and return sludge ratio is 50 150%；Water after processing is discharged into vertical sedimentation basin precipitation from bioreactor top, and the water of sedimentation basin is discharged into follow-up treatment facility using overflow-type and continued with.Waste water after processing is degraded containing rance material in processing procedure, is almost escaped in the waste water after processing without rancidity, protects atmospheric environment.
Description
Technical field
The present invention relates to the removal technology of sewage foul odour material, more particularly to a kind of grease factory waste water foul odour
The minimizing technology of material, belongs to environmental protection technical field.
Background technology
Waste water caused by grease factory before processing rinse water, grease washes, the cleaning of job shop machine and
Ground flushing water etc..Such waste component is complicated, mainly contains the materials such as gleditsia sinensis, phosphatide, protein, oil, pigment, has organic
The features such as pollutant concentration is high, oil content is big, impurity is more, larger to environmental hazard, intractability is higher.In addition, such waste water
Due to the volatile organic compound matter containing high concentration, there is strong pungent rancidity, severe shadow is caused to atmospheric environment
Ring.The foul odour of grease factory waste water mainly by the oxidation of grease, becoming sour causes, the species of foul odour material is mainly small point
The oxide such as sub- aldehyde, ketone and carboxylic acid, alcohols, peroxide.
The handling process of grease factory waste water is compared with frequently with " air supporting+anaerobic process+aerobic method " at present, and such process is useless
The control aspect of water water quality has been achieved for good effect, but ignores foul odour problem caused by grease factory waste water.
Oil wastewater has a strong rancidity, and it is volatile, adhesiveness is larger.Air supporting and aerobic method can make waving in oil wastewater
Hair property organic substance is spilt into air, and lasting baneful influence is caused to atmospheric environment.As requirement of the people to environment is got over
Come higher, how to control and handle the stink of vegetable oil mill waste water, caused the great attention of people.
The content of the invention
The purpose of the present invention is exactly to solve the technical problem that grease factory waste water foul odour material removes, there is provided a kind of oil
The minimizing technology of fat factory waste water foul odour material, while grease factory's wastewater treatment water quality is well kept, it can control useless
Harm of the volatile malodorous odoring substance to atmospheric environment in water.
The technical scheme is that a kind of minimizing technology of grease factory waste water foul odour material, comprises the following steps：
1）Being equipped with includes setting for the removal oil wastewater foul odour material that bioreactor and vertical sedimentation basin form
It is standby；
2）Grease factory waste water is entered into bioreactor by closed conduit from bioreactor bottom, waste water enters biology
Nitrate is launched while reactor into waste water, controls the COD/NO in waste water3- N=4.2-4.8, and start biological respinse
Mixer stirs in device, carries out biological respinse processing, controls below dissolved oxygen 0.2mg/L in bioreactor, bioreactor
Using sludge reflux, it is 2000-6000mg/L, return sludge ratio 50-150% to control sludge concentration in bioreactor；
3）By step 2）Water after processing is discharged into vertical sedimentation basin precipitation, the hydromining of sedimentation basin from bioreactor top
Follow-up treatment facility is discharged into overflow-type to continue with.
Step 1）The equipment for removing oil wastewater foul odour material includes bioreactor and vertical sedimentation basin,
Also include mud return line, biological respinse wall is provided with wastewater inlet pipe and overfall, and wastewater inlet pipe is arranged on biological anti-
The bottom of wall is answered, overfall is arranged on the top of biological respinse wall, and wastewater inlet pipe one end is stretched into bioreactor
Bottom, connection more equally distributed branch pipes of insertion are stretched on the wastewater inlet pipe in bioreactor, on every branch pipe
Provided with some apopores, the wastewater inlet pipe other end stretches out connects waste water source outside bioreactor, stretches out in bioreactor
Outer wastewater inlet pipe is provided with control gate valve, chemicals dosing plant, and chemicals dosing plant is provided with chemical feed pipe connection wastewater inlet pipe, biological respinse
Device top is provided with bioreactor water leg along inwall, and bioreactor water leg connection overfall, bioreactor is interior to be installed
There is mixer, sedimentation basin is that upper cylindrical and lower cone shape connect and compose vertical sedimentation basin, is set in sedimentation basin top wall
There are sedimentation basin water inlet pipe and delivery port, sedimentation basin bottom conical end is provided with sludge outlet, central tube, discharge pipeline are provided with sedimentation basin
With sedimentation basin water leg, central tube is arranged on the centre in sedimentation basin, and central tube connects biology by sedimentation basin water inlet pipe
The overfall of reactor, sedimentation basin water leg are arranged in sedimentation basin upper inside wall, discharge pipeline upper end connection sedimentation basin water leg,
Discharge pipeline lower end is disposed proximate at sludge outlet, and discharge pipeline is provided with three-way pipe, and discharge pipeline passes through three-way pipe and the sludge
Return duct connects the wastewater inlet pipe.
Step 2）It is 24 hours that the waste water, which enters bioreactor hydraulic detention time,.
Step 2）It is described that nitrate is launched into waste water, it is that nitrate, dosing dress are launched into waste water by chemicals dosing plant
Put and the bioreactor is connected by chemical feed pipe including medicament storage tank and measuring pump, medicament storage tank connection measuring pump, measuring pump
Wastewater inlet pipe carry out dispensing nitrate.
Step 2）COD/NO in the control waste water3-N=4.5。
Step 2）It is described that to control sludge concentration in bioreactor be 4000mg/L.
Step 2）The return sludge ratio is 100%.
Step 3）It is described to be discharged into the vertical sedimentation basin sedimentation time as 2 hours.
Present invention process method is advanced simple, the equipment using oil wastewater foul odour material is removed, grease factory waste water
Pass through closed conduit（Wastewater inlet pipe）Enter bioreactor from bottom, carry out biological respinse, mixer is installed in reactor
It is stirred.Water outlet is discharged into sedimentation basin from bioreactor top, and sedimentation basin water outlet can be discharged into follow-up treatment facility and continue
Processing.Process conditions are set：（1）Nitrate is added, controls the COD/NO in waste water3 —N=4.5 or so；（2）Control in anoxic pond
Below dissolved oxygen 0.2mg/L；（3）The sludge concentration for controlling bioreactor is 2000-6000mg/L, return sludge ratio 50-
150%.By above-mentioned processing method, waste water is degraded containing rance material in processing procedure, after the processing of the method useless
Almost escaped in water without rancidity, make the unit of waste water subsequent treatment（Such as aeration）Also rance material is no longer distributed.
Beneficial effect：1st, by the implementation of the inventive method, it is degraded in waste water containing rance material, ordorless material
Effusion；2nd, the subsequent processing units of waste water can use conventional treatment measure, ordorless gaseous matter effusion；3rd, process letter
It is single, it is easy in the waste water disposal facility transformation of grease factory；4th, inventive process avoids due to foul odour thing in oil wastewater
Atmosphere pollution caused by the volatilization of matter, protects atmospheric environment.
Brief description of the drawings
Fig. 1 is the equipment profile of the removal oil wastewater foul odour material of the present invention.
Fig. 2 is the equipment top view of the removal oil wastewater foul odour material of the present invention.
Fig. 3 is the equipment back with water inlet line layout drawing of the removal oil wastewater foul odour material of the present invention.
In figure：1 wastewater inlet pipe, 2 mixers, 3 sedimentation basin water inlet pipes, 4 central tubes, 5 reflecting plates, 6 bioreactor collection
Tank, 7 baffle plates, 8 discharge pipelines, 9 sedimentation basin water legs, 10 medicament storage tanks, 11 measuring pumps, 12 chemical feed pipes, 13 mud return lines, 14
Mixer, 15 sludge reflux pumps, 16 outlet pipes, 18 branch pipes, 19 apopores.
Embodiment
For a better understanding of the present invention, technical scheme is described in detail with instantiation below, but originally
Invention is not limited thereto.A kind of minimizing technology of grease factory waste water foul odour material,
Embodiment 1
1）It is equipped with the equipment for removing oil wastewater foul odour material, including bioreactor, vertical sedimentation basin, sludge
Return duct, biological respinse wall are provided with wastewater inlet pipe and overfall, and wastewater inlet pipe is arranged under biological respinse wall
Portion, overfall are arranged on the top of biological respinse wall, the bottom that wastewater inlet pipe one end is stretched into bioreactor, stretched into
More equally distributed branch pipes of connection insertion, every branch pipe are provided with some water outlets on wastewater inlet pipe in bioreactor
Hole, the wastewater inlet pipe other end stretches out connects waste water source outside bioreactor, the influent waste water stretched out outside bioreactor
Pipe is provided with control gate valve, chemicals dosing plant, and chemicals dosing plant is provided with chemical feed pipe connection wastewater inlet pipe, and bioreactor top is along inwall
Provided with bioreactor water leg, bioreactor water leg connects overfall, and mixer is provided with bioreactor, precipitates
Pond is that upper cylindrical and lower cone shape connect and compose vertical sedimentation basin, and sedimentation basin top wall is provided with sedimentation basin water inlet pipe
And delivery port, sedimentation basin bottom conical end are provided with sludge outlet, catchmented in sedimentation basin provided with central tube, discharge pipeline and sedimentation basin
Groove, central tube are arranged on the centre in sedimentation basin, and central tube connects the overflow of bioreactor by sedimentation basin water inlet pipe
Mouthful, sedimentation basin water leg is arranged in sedimentation basin upper inside wall, and discharge pipeline upper end connection sedimentation basin water leg, discharge pipeline lower end is set
Put close at sludge outlet, discharge pipeline is provided with three-way pipe, and discharge pipeline connects institute by three-way pipe with the mud return line
State wastewater inlet pipe.
2）Grease factory waste water is entered into bioreactor from bioreactor bottom by closed conduit, it is anti-to carry out biology
Should, waste water index is：COD=2500.00mg/L, NO3 —N=0.00mg/L, stirred using mixer is installed in bioreactor
Mix, add potassium nitrate as denitrification nitrogen source, make COD/NO3 —N=4.5:1.That is NO3 —N=555.56mg/L, added per 1L waste water
4.01gKNO3；Hydraulic detention time is 24h, controls below dissolved oxygen 0.2mg/L in anoxic pond, return sludge ratio 150%；Sludge
Concentration MLSS=5000mg/L.
3）It is small that water after bioreactor reaction treatment from bioreactor top is discharged into vertical sedimentation basin precipitation 2
When, the water of sedimentation basin is discharged into follow-up treatment facility using overflow-type and continued with.
Embodiment 2
1）It is equipped with the equipment for removing oil wastewater foul odour material, including bioreactor, vertical sedimentation basin, sludge
Return duct, biological respinse wall are provided with wastewater inlet pipe and overfall, and wastewater inlet pipe is arranged under biological respinse wall
Portion, overfall are arranged on the top of biological respinse wall, the bottom that wastewater inlet pipe one end is stretched into bioreactor, stretched into
More equally distributed branch pipes of connection insertion, every branch pipe are provided with some water outlets on wastewater inlet pipe in bioreactor
Hole, the wastewater inlet pipe other end stretches out connects waste water source outside bioreactor, the influent waste water stretched out outside bioreactor
Pipe is provided with control gate valve, chemicals dosing plant, and chemicals dosing plant is provided with chemical feed pipe connection wastewater inlet pipe, and bioreactor top is along inwall
Provided with bioreactor water leg, bioreactor water leg connects overfall, and mixer is provided with bioreactor, precipitates
Pond is that upper cylindrical and lower cone shape connect and compose vertical sedimentation basin, and sedimentation basin top wall is provided with sedimentation basin water inlet pipe
And delivery port, sedimentation basin bottom conical end are provided with sludge outlet, catchmented in sedimentation basin provided with central tube, discharge pipeline and sedimentation basin
Groove, central tube are arranged on the centre in sedimentation basin, and central tube connects the overflow of bioreactor by sedimentation basin water inlet pipe
Mouthful, sedimentation basin water leg is arranged in sedimentation basin upper inside wall, and discharge pipeline upper end connection sedimentation basin water leg, discharge pipeline lower end is set
Put close at sludge outlet, discharge pipeline is provided with three-way pipe, and discharge pipeline connects institute by three-way pipe with the mud return line
State wastewater inlet pipe.
2）Grease factory waste water is entered into bioreactor from bioreactor bottom by closed conduit, it is anti-to carry out biology
Should, waste water index is：COD=2500.00mg/L, NO3 —N=0.00mg/L, stirred using mixer is installed in bioreactor
Mix, add potassium nitrate as denitrification nitrogen source, make COD/NO3 —N=4.2:1.That is NO3 —N=555.56mg/L, added per 1L waste water
4.01gKNO3；Hydraulic detention time is 24h, controls below dissolved oxygen 0.2mg/L in anoxic pond, return sludge ratio 100%；Sludge
Concentration MLSS=6000mg/L.
3）It is small that water after bioreactor reaction treatment from bioreactor top is discharged into vertical sedimentation basin precipitation 2
When, the water of sedimentation basin is discharged into follow-up treatment facility using overflow-type and continued with.
Embodiment 3
1）It is equipped with the equipment for removing oil wastewater foul odour material, including bioreactor, vertical sedimentation basin, sludge
Return duct, biological respinse wall are provided with wastewater inlet pipe and overfall, and wastewater inlet pipe is arranged under biological respinse wall
Portion, overfall are arranged on the top of biological respinse wall, the bottom that wastewater inlet pipe one end is stretched into bioreactor, stretched into
More equally distributed branch pipes of connection insertion, every branch pipe are provided with some water outlets on wastewater inlet pipe in bioreactor
Hole, the wastewater inlet pipe other end stretches out connects waste water source outside bioreactor, the influent waste water stretched out outside bioreactor
Pipe is provided with control gate valve, chemicals dosing plant, and chemicals dosing plant is provided with chemical feed pipe connection wastewater inlet pipe, and bioreactor top is along inwall
Provided with bioreactor water leg, bioreactor water leg connects overfall, and mixer is provided with bioreactor, precipitates
Pond is that upper cylindrical and lower cone shape connect and compose vertical sedimentation basin, and sedimentation basin top wall is provided with sedimentation basin water inlet pipe
And delivery port, sedimentation basin bottom conical end are provided with sludge outlet, catchmented in sedimentation basin provided with central tube, discharge pipeline and sedimentation basin
Groove, central tube are arranged on the centre in sedimentation basin, and central tube connects the overflow of bioreactor by sedimentation basin water inlet pipe
Mouthful, sedimentation basin water leg is arranged in sedimentation basin upper inside wall, and discharge pipeline upper end connection sedimentation basin water leg, discharge pipeline lower end is set
Put close at sludge outlet, discharge pipeline is provided with three-way pipe, and discharge pipeline connects institute by three-way pipe with the mud return line
State wastewater inlet pipe.
2）Grease factory waste water is entered into bioreactor from bioreactor bottom by closed conduit, it is anti-to carry out biology
Should, waste water index is：COD=2500.00mg/L, NO3 —N=0.00mg/L, stirred using mixer is installed in bioreactor
Mix, add potassium nitrate as denitrification nitrogen source, make COD/NO3 —N=4.8:1.That is NO3 —N=555.56mg/L, added per 1L waste water
4.01gKNO3；Hydraulic detention time is 24h, controls below dissolved oxygen 0.2mg/L in anoxic pond, return sludge ratio 50%；Sludge
Concentration MLSS=2000mg/L.
3）It is small that water after bioreactor reaction treatment from bioreactor top is discharged into vertical sedimentation basin precipitation 2
When, the water of sedimentation basin is discharged into follow-up treatment facility using overflow-type and continued with.
Claims (5)
1. a kind of minimizing technology of grease factory waste water foul odour material, it is characterized in that, comprise the following steps：
1）It is equipped with the equipment for the removal oil wastewater foul odour material for including bioreactor and vertical sedimentation basin composition；
2）Grease factory waste water is entered into bioreactor by closed conduit from bioreactor bottom, waste water enters biological respinse
Nitrate is launched while device into waste water, controls the COD/NO in waste water3- N=4.2-4.8, and start in bioreactor
Mixer stirs, and carries out biological respinse processing, controls below dissolved oxygen 0.2mg/L in bioreactor, and bioreactor uses
Sludge reflux, it is 2000-6000mg/L, return sludge ratio 50-150% to control sludge concentration in bioreactor；The waste water
It it is 24 hours into bioreactor hydraulic detention time；The nitrate is potassium nitrate, and input amount is that every 1 liter of waste water adds
4.01g；
3）By step 2）Water after processing is discharged into vertical sedimentation basin precipitation from bioreactor top, and the water of sedimentation basin is using excessive
Streaming is discharged into follow-up treatment facility and continued with；It is described to be discharged into the vertical sedimentation basin sedimentation time as 2 hours；
The equipment for removing oil wastewater foul odour material includes bioreactor and vertical sedimentation basin, in addition to sludge
Return duct, biological respinse wall are provided with wastewater inlet pipe and overfall, and wastewater inlet pipe is arranged under biological respinse wall
Portion, overfall are arranged on the top of biological respinse wall, the bottom that wastewater inlet pipe one end is stretched into bioreactor, stretched into
More equally distributed branch pipes of connection insertion, every branch pipe are provided with some water outlets on wastewater inlet pipe in bioreactor
Hole, the wastewater inlet pipe other end stretches out connects waste water source outside bioreactor, the influent waste water stretched out outside bioreactor
Pipe is provided with control gate valve, chemicals dosing plant, and chemicals dosing plant is provided with chemical feed pipe connection wastewater inlet pipe, and bioreactor top is along inwall
Provided with bioreactor water leg, bioreactor water leg connects overfall, and mixer is provided with bioreactor, precipitates
Pond is that upper cylindrical and lower cone shape connect and compose vertical sedimentation basin, and sedimentation basin top wall is provided with sedimentation basin water inlet pipe
And delivery port, sedimentation basin bottom conical end are provided with sludge outlet, catchmented in sedimentation basin provided with central tube, discharge pipeline and sedimentation basin
Groove, central tube are arranged on the centre in sedimentation basin, and central tube connects the overflow of bioreactor by sedimentation basin water inlet pipe
Mouthful, sedimentation basin water leg is arranged in sedimentation basin upper inside wall, and discharge pipeline upper end connection sedimentation basin water leg, discharge pipeline lower end is set
Put close at sludge outlet, discharge pipeline is provided with three-way pipe, and discharge pipeline connects institute by three-way pipe with the mud return line
State wastewater inlet pipe.
2. a kind of minimizing technology of grease factory waste water foul odour material according to claim 1, it is characterized in that, step 2）
It is described that nitrate is launched into waste water, it is that nitrate is launched into waste water by chemicals dosing plant, chemicals dosing plant includes medicament storage tank
And measuring pump, medicament storage tank connection measuring pump, the wastewater inlet pipe that measuring pump connects the bioreactor by chemical feed pipe enter
Row launches nitrate.
3. a kind of minimizing technology of grease factory waste water foul odour material according to claim 1, it is characterized in that, step 2）
COD/NO in the control waste water3-N=4.5。
4. a kind of minimizing technology of grease factory waste water foul odour material according to claim 1, it is characterized in that, step 2）
It is described that to control sludge concentration in bioreactor be 4000mg/L.
5. a kind of minimizing technology of grease factory waste water foul odour material according to claim 1, it is characterized in that, step 2）
The return sludge ratio is 100%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510324670.3A CN104944699B (en) | 2015-06-15 | 2015-06-15 | A kind of minimizing technology of grease factory waste water foul odour material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510324670.3A CN104944699B (en) | 2015-06-15 | 2015-06-15 | A kind of minimizing technology of grease factory waste water foul odour material |
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| CN104944699A CN104944699A (en) | 2015-09-30 |
| CN104944699B true CN104944699B (en) | 2018-01-23 |
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| CN101318741B (en) * | 2008-07-11 | 2011-01-05 | 北京城市排水集团有限责任公司 | Apparatus and method for synchronous denitrification and development of sewage sludge internal carbon source of urban sewage |
| AU2013397276B2 (en) * | 2013-06-24 | 2018-12-06 | Biofiltro Usa, Inc. | Treatment for domestic and industrial waste water |
| CN204111525U (en) * | 2014-08-21 | 2015-01-21 | 广州嘉康环保技术有限公司 | A kind of aquaculture Waste Water Treatment |
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