CN112209577A - Kitchen wastewater treatment method - Google Patents
Kitchen wastewater treatment method Download PDFInfo
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- CN112209577A CN112209577A CN202011189417.9A CN202011189417A CN112209577A CN 112209577 A CN112209577 A CN 112209577A CN 202011189417 A CN202011189417 A CN 202011189417A CN 112209577 A CN112209577 A CN 112209577A
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- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 19
- 239000010802 sludge Substances 0.000 claims abstract description 72
- 239000007788 liquid Substances 0.000 claims abstract description 39
- 239000010812 mixed waste Substances 0.000 claims abstract description 37
- 239000008394 flocculating agent Substances 0.000 claims abstract description 19
- 239000002351 wastewater Substances 0.000 claims abstract description 15
- 238000000926 separation method Methods 0.000 claims abstract description 13
- 230000018044 dehydration Effects 0.000 claims abstract description 5
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 5
- 239000012528 membrane Substances 0.000 claims description 15
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 claims description 15
- 238000000108 ultra-filtration Methods 0.000 claims description 14
- 239000010813 municipal solid waste Substances 0.000 claims description 12
- 238000004062 sedimentation Methods 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 230000001112 coagulating effect Effects 0.000 claims description 9
- 239000010806 kitchen waste Substances 0.000 claims description 8
- 238000005345 coagulation Methods 0.000 claims description 3
- 230000015271 coagulation Effects 0.000 claims description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 6
- 239000003344 environmental pollutant Substances 0.000 abstract description 6
- 231100000719 pollutant Toxicity 0.000 abstract description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 239000001301 oxygen Substances 0.000 abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 238000005189 flocculation Methods 0.000 abstract description 3
- 230000016615 flocculation Effects 0.000 abstract description 3
- 238000001556 precipitation Methods 0.000 abstract description 3
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
-
- 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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/147—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2846—Anaerobic digestion processes using upflow anaerobic sludge blanket [UASB] reactors
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Activated Sludge Processes (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kitchen wastewater treatment method, which comprises the following steps: s1, adding the kitchen wastewater into a sludge concentration tank, and mixing the kitchen wastewater with the activated sludge in the sludge concentration tank to form first mixed sludge; s2, adding a flocculating agent into the sludge concentration tank, and mixing the flocculating agent with the first mixed sludge to form second mixed sludge; s3, conveying the second mixed sludge to a centrifugal dehydrator, and performing centrifugal dehydration to form a first mixed waste liquid; s4, conveying the first mixed waste liquid to an oil separation tank for treatment; and S5, after oil separation treatment, carrying out air floatation treatment on the first mixed waste liquid, and conveying the first mixed waste liquid subjected to air floatation treatment to a grating tank. According to the kitchen wastewater treatment method, in the sludge concentration tank, the mixed liquid is subjected to flocculation and precipitation by adding the flocculating agent, and the chemical oxygen demand, the total nitrogen and suspended matters are reduced by utilizing the sludge activity and the flocculating agent, so that the pollutant concentration can be reduced, and the centrifugal dehydrator is shared, so that the investment and the cost are reduced.
Description
Technical Field
The invention belongs to the technical field of kitchen waste treatment, and particularly relates to a kitchen waste water treatment method.
Background
Kitchen garbage waste water is the sewage that forms after handling kitchen garbage, contains a large amount of organic matters and grease in the kitchen garbage waste water, and current kitchen waste water treatment system need set up a plurality of centrifugal dehydrator, and equipment investment is more, and the treatment effect is not very good moreover, can not effectively reduce pollutant concentrations such as Chemical Oxygen Demand (COD), Total Nitrogen (TN), Suspended Solid (SS), leads to secondary pollution easily.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a kitchen wastewater treatment method, and aims to reduce the concentration of pollutants.
In order to achieve the purpose, the invention adopts the technical scheme that: the kitchen wastewater treatment method comprises the following steps:
s1, adding the kitchen wastewater to be treated into a sludge concentration tank, and mixing the kitchen wastewater with activated sludge in the sludge concentration tank to form first mixed sludge;
s2, adding a flocculating agent into the sludge concentration tank, and mixing the flocculating agent with the first mixed sludge to form second mixed sludge;
s3, conveying the second mixed sludge to a centrifugal dehydrator, and performing centrifugal dehydration to form a first mixed waste liquid;
s4, conveying the first mixed waste liquid to an oil separation tank for treatment;
s5, after oil removal treatment, carrying out air floatation treatment on the first mixed waste liquid, and conveying the first mixed waste liquid subjected to air floatation treatment to a grating tank;
s6, adding the household garbage leachate into the grid pool, and mixing the household garbage leachate with the first mixed waste liquid to form a second mixed waste liquid.
In the sludge concentration tank, the proportion of activated sludge to kitchen wastewater is 3: 1-10: 1.
in the step S2, the ratio of the first mixed sludge to the flocculant is 5: 1.
the kitchen wastewater treatment method further comprises the following steps:
s7, conveying the second mixed waste liquid to a coagulating sedimentation tank for treatment;
s8, enabling the effluent of the coagulation sedimentation tank to enter an adjusting tank;
s9, enabling the effluent of the regulating tank to enter a UASB reactor;
s9, enabling effluent of the UASB reactor to enter a denitrification tank;
s10, enabling effluent of the denitrification tank to enter a nitrification tank;
s11, introducing the effluent of the nitrification tank into an ultrafiltration membrane tank;
s12, the effluent of the ultrafiltration membrane tank enters a leachate advanced treatment system.
According to the kitchen wastewater treatment method, in the sludge concentration tank, the mixed liquid is subjected to flocculation and precipitation by adding the flocculating agent, and the chemical oxygen demand, the total nitrogen and suspended matters are reduced by utilizing the sludge activity and the flocculating agent, so that the pollutant concentration can be reduced, and the centrifugal dehydrator is shared, so that the investment and the cost are reduced.
Drawings
The description includes the following figures, the contents shown are respectively:
FIG. 1 is a flow chart of the kitchen wastewater treatment method of the invention.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for a purpose of helping those skilled in the art to more fully, accurately and deeply understand the concept and technical solution of the present invention and to facilitate its implementation.
It should be noted that, in the following embodiments, the "first" and "second" do not represent an absolute distinction relationship in structure and/or function, nor represent a sequential execution order, but merely for convenience of description.
As shown in fig. 1, the invention provides a kitchen wastewater treatment method, which adopts a kitchen wastewater treatment system and comprises the following steps:
s1, adding the kitchen wastewater to be treated into a sludge concentration tank, and mixing the kitchen wastewater with activated sludge in the sludge concentration tank to form first mixed sludge;
s2, adding a flocculating agent into the sludge concentration tank, and mixing the flocculating agent with the first mixed sludge to form second mixed sludge;
s3, conveying the second mixed sludge to a centrifugal dehydrator, and performing centrifugal dehydration to form a first mixed waste liquid;
s4, conveying the first mixed waste liquid to an oil separation tank for treatment;
s5, after oil removal treatment, carrying out air floatation treatment on the first mixed waste liquid, and conveying the first mixed waste liquid subjected to air floatation treatment to a grating tank;
s6, adding the domestic garbage leachate into a grid pool, and mixing the domestic garbage leachate with the first mixed waste liquid to form second mixed waste liquid;
s7, conveying the second mixed waste liquid to a coagulating sedimentation tank for treatment;
s8, enabling the effluent of the coagulation sedimentation tank to enter an adjusting tank;
s9, enabling the effluent of the regulating tank to enter a UASB reactor;
s9, enabling effluent of the UASB reactor to enter a denitrification tank;
s10, enabling effluent of the denitrification tank to enter a nitrification tank;
s11, introducing the effluent of the nitrification tank into an ultrafiltration membrane tank;
s12, the effluent of the ultrafiltration membrane tank enters a leachate advanced treatment system.
Specifically, the kitchen waste water treatment system comprises an oil separation tank, a grid tank, a coagulating sedimentation tank, an adjusting tank, a UASB reaction tank, a denitrification tank, a nitrification tank, an ultrafiltration membrane tank, a sludge concentration tank and a centrifugal dehydrator, wherein the centrifugal dehydrator is connected with the sludge concentration tank and the oil separation tank, the sludge concentration tank is constructed to be used for receiving kitchen waste water and a flocculating agent, the kitchen waste water and the flocculating agent are mixed with active sludge in the sludge concentration tank and then are conveyed to the centrifugal dehydrator, and first mixed waste liquid generated by the centrifugal dehydrator flows into the oil separation tank.
The oil separation tank, the grid tank, the coagulating sedimentation tank, the regulating tank, the UASB reaction tank, the denitrification tank, the nitrification tank, the ultrafiltration membrane tank and the sludge concentration tank are sequentially arranged and sequentially communicated. The oil separation tank is communicated with the grating tank, the grating tank is communicated with the coagulating sedimentation tank, the coagulating sedimentation tank is communicated with the regulating tank, the regulating tank is communicated with the UASB reaction tank, the UASB reaction tank is communicated with the denitrification tank, the denitrification tank is communicated with the nitrification tank, the nitrification tank is communicated with the ultrafiltration membrane tank, the ultrafiltration membrane tank is communicated with the sludge concentration tank, the sludge concentration tank is communicated with the centrifugal dehydrator, and the centrifugal dehydrator is communicated with the oil separation tank. The kitchen waste water is directly sent to a sludge concentration tank of a leachate treatment system, mixed with activated sludge and a flocculating agent and then enters a centrifugal dehydrator of the leachate treatment system, and a first mixed waste liquid formed after centrifugal dehydration enters an oil separation tank at the front end, so that the investment is reduced. And the flocculating agent is added into the sludge concentration tank for flocculation and precipitation, so that the sludge activity and the flocculating agent can be utilized to reduce the concentration of pollutants such as Chemical Oxygen Demand (COD), Total Nitrogen (TN), suspended matters (SS) and the like. The sludge is condensed and enters a centrifugal dehydrator to be dehydrated to form a sludge cake, and the sludge cake is sent to an incinerator to be incinerated.
In step S1, in the sludge concentration tank, the ratio of the activated sludge to the kitchen wastewater is 3: 1-10: 1, preferably 5: 1.
the activated sludge in the sludge concentration tank is formed by treating the domestic garbage percolate. In the kitchen wastewater treatment process, firstly, kitchen wastewater to be treated is added into a sludge concentration tank, and the kitchen wastewater is mixed with activated sludge in the sludge concentration tank to form first mixed sludge. In the step S2, a flocculant is further added to the sludge concentration tank, the flocculant is mixed with the first mixed sludge to form a second mixed sludge, and the ratio of the first mixed sludge to the flocculant is 5: 1, the mass concentration of the flocculating agent is 1 per mill, and the flocculating agent is PAM. The second mixed sludge is conveyed to a centrifugal dehydrator, and is centrifugally dehydrated to form a first mixed waste liquid, and in the step S3, the first mixed waste liquid is conveyed to an oil separation tank for treatment; after the first mixed waste liquid is subjected to oil removal treatment, air floatation treatment is carried out; in the step S4, the first mixed waste liquid after air flotation treatment is conveyed to a grid pond, then the domestic garbage leachate is added into the grid pond, the domestic garbage leachate is mixed with the first mixed waste liquid to form a second mixed waste liquid, and larger floating objects in the second mixed waste liquid are removed through the grid pond; in step S5, the second mixed waste liquid from which the large floating objects have been removed is sent to a coagulating sedimentation tank for treatment; in the step S6, the effluent of the coagulating sedimentation tank enters a regulating tank; in the step S7, the effluent of the regulating reservoir enters a UASB reactor; in the step S8, the effluent of the UASB reactor enters a denitrification tank; in the above step S9; in the step S10, the effluent of the denitrification tank enters a nitrification tank; in the step S11, the effluent of the nitrification tank enters an ultrafiltration membrane tank, and is filtered by a membrane to remove pollutants; in the step S12, a part of the effluent of the ultrafiltration membrane tank enters a leachate advanced treatment system (the system mainly comprises a NF subsystem, an RO subsystem and a DTRO subsystem) to form a concentrated solution which can be incinerated in a furnace and a clear solution which reaches the discharge standard, and the other part of the effluent of the ultrafiltration membrane tank is delivered to a sludge concentration tank to form activated sludge.
In the treatment process, the water quantity and the water quality of the mixed waste liquid are regulated by the regulating tank so as to be beneficial to the stable operation of the subsequent treatment process, and the water outlet of the regulating tank is communicated with the UASB reaction tank. Removing most organic matters in the mixed waste liquid under the action of anaerobic microorganisms in a UASB reactor, and simultaneously converting organic nitrogen into ammonia nitrogen for subsequent nitrification and denitrification reactions; the water outlet of the UASB reactor is connected with a denitrification tank, the water outlet of the denitrification tank is connected with a nitrification tank, and the water outlet of the nitrification tank is connected with an ultrafiltration membrane tank.
The invention is described above with reference to the accompanying drawings. It is to be understood that the specific implementations of the invention are not limited in this respect. Various insubstantial improvements are made by adopting the method conception and the technical scheme of the invention; the present invention is not limited to the above embodiments, and can be modified in various ways.
Claims (4)
1. The kitchen wastewater treatment method is characterized by comprising the following steps:
s1, adding the kitchen wastewater to be treated into a sludge concentration tank, and mixing the kitchen wastewater with activated sludge in the sludge concentration tank to form first mixed sludge;
s2, adding a flocculating agent into the sludge concentration tank, and mixing the flocculating agent with the first mixed sludge to form second mixed sludge;
s3, conveying the second mixed sludge to a centrifugal dehydrator, and performing centrifugal dehydration to form a first mixed waste liquid;
s4, conveying the first mixed waste liquid to an oil separation tank for treatment;
s5, after oil removal treatment, carrying out air floatation treatment on the first mixed waste liquid, and conveying the first mixed waste liquid subjected to air floatation treatment to a grating tank;
s6, adding the household garbage leachate into the grid pool, and mixing the household garbage leachate with the first mixed waste liquid to form a second mixed waste liquid.
2. The kitchen wastewater treatment method according to claim 1, wherein in the sludge concentration tank, the ratio of activated sludge to kitchen wastewater is 3: 1-10: 1.
3. the kitchen wastewater treatment method according to claim 1 or 2, wherein in the step S2, the ratio of the first mixed sludge to the flocculant is 5: 1.
4. the kitchen waste water treatment method according to any one of claims 1 to 3, characterized by further comprising the steps of:
s7, conveying the second mixed waste liquid to a coagulating sedimentation tank for treatment;
s8, enabling the effluent of the coagulation sedimentation tank to enter an adjusting tank;
s9, enabling the effluent of the regulating tank to enter a UASB reactor;
s9, enabling effluent of the UASB reactor to enter a denitrification tank;
s10, enabling effluent of the denitrification tank to enter a nitrification tank;
s11, introducing the effluent of the nitrification tank into an ultrafiltration membrane tank;
s12, the effluent of the ultrafiltration membrane tank enters a leachate advanced treatment system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011189417.9A CN112209577A (en) | 2020-10-30 | 2020-10-30 | Kitchen wastewater treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011189417.9A CN112209577A (en) | 2020-10-30 | 2020-10-30 | Kitchen wastewater treatment method |
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| Publication Number | Publication Date |
|---|---|
| CN112209577A true CN112209577A (en) | 2021-01-12 |
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| CN202011189417.9A Pending CN112209577A (en) | 2020-10-30 | 2020-10-30 | Kitchen wastewater treatment method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458125A (en) * | 2021-07-26 | 2021-10-01 | 中国环境保护集团有限公司 | Kitchen waste treatment system and method |
| CN113458124A (en) * | 2021-07-26 | 2021-10-01 | 中国环境保护集团有限公司 | Kitchen waste treatment system and method |
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| JP2006297307A (en) * | 2005-04-21 | 2006-11-02 | Hitachi Zosen Corp | Method for treating raw sewage based waste water |
| CN204874210U (en) * | 2015-08-24 | 2015-12-16 | 华南农业大学 | Device of meal kitchen waste water is handled to flocculation air supporting - biological filter |
| CN107857437A (en) * | 2017-11-30 | 2018-03-30 | 重庆三峰环境产业集团有限公司 | A kind of method and system for handling mixing percolate |
| CN110526518A (en) * | 2019-09-20 | 2019-12-03 | 重庆杰润科技有限公司 | A kind of non-membrane treating method of anaerobic digestion of kitchen wastes waste water |
-
2020
- 2020-10-30 CN CN202011189417.9A patent/CN112209577A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006297307A (en) * | 2005-04-21 | 2006-11-02 | Hitachi Zosen Corp | Method for treating raw sewage based waste water |
| CN204874210U (en) * | 2015-08-24 | 2015-12-16 | 华南农业大学 | Device of meal kitchen waste water is handled to flocculation air supporting - biological filter |
| CN107857437A (en) * | 2017-11-30 | 2018-03-30 | 重庆三峰环境产业集团有限公司 | A kind of method and system for handling mixing percolate |
| CN110526518A (en) * | 2019-09-20 | 2019-12-03 | 重庆杰润科技有限公司 | A kind of non-membrane treating method of anaerobic digestion of kitchen wastes waste water |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458125A (en) * | 2021-07-26 | 2021-10-01 | 中国环境保护集团有限公司 | Kitchen waste treatment system and method |
| CN113458124A (en) * | 2021-07-26 | 2021-10-01 | 中国环境保护集团有限公司 | Kitchen waste treatment system and method |
| CN113458125B (en) * | 2021-07-26 | 2024-05-28 | 中国环境保护集团有限公司 | Kitchen waste treatment system and method |
| CN113458124B (en) * | 2021-07-26 | 2024-05-28 | 中国环境保护集团有限公司 | Kitchen waste treatment system and method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 241000 Room 202, building 1, No. 9, Wanjiang Avenue, Jiangbei industrial cluster, Wuhu City, Anhui Province Applicant after: Anhui Haichuang Green Energy Environmental Protection Group Co.,Ltd. Address before: 241000 Room 202, building 1, No. 9, Wanjiang Avenue, Jiangbei industrial cluster, Wuhu City, Anhui Province Applicant before: Wuhu conch Investment Co.,Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210112 |