CN112960834A - Sewage treatment standard-reaching discharge process for kitchen waste leachate - Google Patents
Sewage treatment standard-reaching discharge process for kitchen waste leachate Download PDFInfo
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- CN112960834A CN112960834A CN202110177642.9A CN202110177642A CN112960834A CN 112960834 A CN112960834 A CN 112960834A CN 202110177642 A CN202110177642 A CN 202110177642A CN 112960834 A CN112960834 A CN 112960834A
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- 239000010865 sewage Substances 0.000 title claims abstract description 40
- 239000010806 kitchen waste Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000008569 process Effects 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 13
- 238000001704 evaporation Methods 0.000 claims abstract description 12
- 230000008020 evaporation Effects 0.000 claims abstract description 12
- 239000012530 fluid Substances 0.000 claims description 33
- 230000000149 penetrating effect Effects 0.000 claims description 30
- 239000000243 solution Substances 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 9
- 239000006104 solid solution Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000012153 distilled water Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 abstract 1
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 239000010794 food waste Substances 0.000 description 3
- 239000010791 domestic waste Substances 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 239000010775 animal oil Substances 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000019688 fish Nutrition 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 230000005541 medical transmission Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Classifications
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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
- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention relates to the technical field of garbage treatment, in particular to a sewage treatment standard-reaching discharge process of kitchen waste leachate, which comprises the kitchen waste leachate, a three-phase centrifuge, a leachate storage tank, a delivery pump, a filter, a pH adjusting tank and a primary DTRO (draw texturing extraction), and the discharge process comprises the following three working sections: a pretreatment working section: collecting sewage at the outlet of the three-phase centrifuge in a percolate storage tank, and conveying the sewage into a special filter by a conveying pump; DTRO treatment section: after passing through the pH adjusting tank, when the pH of the sewage is about 6.8, sending the sewage into primary DTRO for treatment; low-temperature evaporation water treatment section: the primary DTRO concentrated solution is sent into a low-temperature evaporator water treatment system by a delivery pump. This kitchen garbage leachate's sewage treatment modular combination that discharge to reach standard technology adopted selects corresponding water treatment module to different leachate treatment capacities, can satisfy different water treatment capacity's change demand.
Description
Technical Field
The invention relates to the technical field of garbage treatment, in particular to a standard-reaching discharge process for sewage treatment of kitchen garbage leachate.
Background
With the rapid development of economy in China, the living standard of Chinese residents is continuously improved, people have new requirements on the drinking standard, the scale and the quantity of the catering industry are rapidly increased, so that the treatment of kitchen waste on environmental problems is more and more important, the kitchen waste refers to food waste generated in the consumption process of families, hotels, offices, school canteens and the catering industry, is formed by the food waste and food debris, and comprises the following components of rice, flour, animal oil and vegetable oil, fish, meat, bones and food residues, chemical compositions comprise protein, cellulose, starch, inorganic salt, fat and the like, the kitchen waste is an important component of municipal domestic waste, accounts for 30-50% of the total quantity of the domestic waste, has the characteristics of dispersion, high moisture, difficult collection, storage, transportation, landfill, incineration and the like, and has high organic matter content, the components are complex and are very easy to acidify, so that the water quality fluctuation of the leachate is large, the content of toxic and harmful substances is high, the property is unstable, the leachate is influenced by various factors, different factors have different influences on the components and the properties of the kitchen waste leachate, if the leachate is not treated properly, the leachate is extremely easy to rot, smell and breed various bacteria, viruses and the like in a short time, roads, air, a water system and the surrounding urban environment are polluted to a great extent, the disease transmission is caused, the treatment is difficult, and the kitchen waste needs to be strictly treated, so that the standard-reaching discharge process for treating the sewage of the kitchen waste leachate is designed, and the process is urgently needed in the technical field of the current waste treatment.
Disclosure of Invention
The invention provides a sewage treatment standard-reaching discharge process of kitchen waste leachate, and aims to solve the problems in the prior art.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
according to the embodiment of the invention, the sewage treatment standard-reaching discharge process of the kitchen waste leachate comprises the kitchen waste leachate, a three-phase centrifuge, a leachate storage tank, a delivery pump, a filter, a pH adjusting tank and a primary DTRO, and comprises the following three working sections:
a pretreatment working section: collecting sewage at the outlet of the three-phase centrifuge in a percolate storage tank, conveying the sewage into a special filter by a conveying pump, removing large-particle substances, then conveying the sewage into a first-stage special filter to remove more than 80% of solid solution, conveying the penetrating fluid into an intermediate filtering water storage tank, conveying the penetrating fluid into a second-stage special filter by the conveying pump to remove more than 99.9% of solid solution, and treating the second-stage penetrating fluid sewage by the second-stage special filter to obtain effluent SS which is less than or equal to 1000 mg/L; the concentrated solution of the first-stage special filter is sent to a low-temperature evaporation dryer to remove water and dry, organic matters with required water content are sent to a three-phase centrifuge and then an organic product collecting and transporting system, distilled water is sent to the pH adjusting storage tank, and the concentrated solution of the second-stage special filter is sent to a percolate storage tank for circulation treatment;
DTRO treatment section: after passing through a pH adjusting tank, when the pH of the sewage is about 6.8, sending the sewage into a primary DTRO for treatment, sending penetrating fluid after primary DTRO into a primary penetrating fluid storage tank, sending the penetrating fluid into a secondary DTRO for treatment by a primary penetrating fluid conveying pump, sending concentrated solution after the primary DTRO into a primary DTRO concentrated solution storage tank, sending the concentrated solution into a low-temperature evaporator system for treatment by a primary DTRO concentrated solution conveying pump, sending the primary DTRO penetrating fluid and condensed fluid generated by the low-temperature evaporator system into the secondary DTRO for treatment, sending the penetrating fluid into a product water storage tank, sending the penetrating fluid into a downstream receiving end after being detected to be qualified to meet the discharge standard required by the application environment, sending the concentrated solution after the secondary DTRO into a secondary DTRO concentrated solution storage tank, and sending the concentrated solution into a primary DT;
low-temperature evaporation water treatment section: and when the concentration liquid of the water treatment system of the low-temperature evaporator reaches 10-15 times of the preset value, the concentration liquid contains high salt and is sent to a low-temperature evaporation dryer for drying and then is sent out.
Further, the special filter in the pretreatment section is a nano-scale filter pore size.
Further, the discharge standard of the kitchen waste leachate after treatment is GB/T18920-2002.
The invention has the following advantages:
this kitchen garbage leachate's sewage treatment discharge to reach standard technology adopts's modularization combination, to different leachate treatment capacity, selects corresponding water treatment module, can satisfy different water treatment capacity's change demand, and this kitchen garbage leachate's sewage treatment discharge to reach standard technology supporting device area is little simultaneously, and the process flow is short, and the automatic level of process operation control is high, and the engineering investment is few, is suitable for the sewage treatment process of all kinds of kitchen garbage leachate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope of the present invention.
FIG. 1 is a schematic view of a process flow of a pretreatment working section of the kitchen waste leachate in the invention;
FIG. 2 is a schematic diagram of a two-stage DTRO water treatment process of the kitchen waste leachate in the present invention;
FIG. 3 is a schematic view of the process flow of the low-temperature evaporation treatment and concentrated solution drying of the kitchen waste leachate in the invention.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship may be made without substantial changes in the technical content.
The invention provides a technical scheme that:
the utility model provides a kitchen garbage filtration's sewage treatment discharge to reach standard technology, includes kitchen garbage filtration liquid, three-phase centrifuge, filtration liquid storage tank, delivery pump, filter, pH surge tank and one-level DTRO, and this discharge technology includes following three workshop section:
a pretreatment working section: collecting sewage at the outlet of the three-phase centrifuge in a percolate storage tank, conveying the sewage into a special filter by a conveying pump, removing large-particle substances, then conveying the sewage into a first-stage special filter to remove more than 80% of solid solution, conveying the penetrating fluid into an intermediate filtering water storage tank, conveying the penetrating fluid into a second-stage special filter by the conveying pump to remove more than 99.9% of solid solution, and treating the second-stage penetrating fluid sewage by the second-stage special filter to obtain effluent SS which is less than or equal to 1000 mg/L; the concentrated solution of the first-stage special filter is sent to a low-temperature evaporation dryer to remove water and dry, organic matters with required water content are sent to a three-phase centrifuge and then an organic product collecting and transporting system, distilled water is sent to the pH adjusting storage tank, and the concentrated solution of the second-stage special filter is sent to a percolate storage tank for circulation treatment;
DTRO treatment section: after passing through a pH adjusting tank, when the pH of the sewage is about 6.8, sending the sewage into a primary DTRO for treatment, sending penetrating fluid after primary DTRO into a primary penetrating fluid storage tank, sending the penetrating fluid into a secondary DTRO for treatment by a primary penetrating fluid conveying pump, sending concentrated solution after the primary DTRO into a primary DTRO concentrated solution storage tank, sending the concentrated solution into a low-temperature evaporator system for treatment by a primary DTRO concentrated solution conveying pump, sending the penetrating fluid of the primary DTRO and condensed fluid generated by the low-temperature evaporator system into the secondary DTRO for treatment, sending the penetrating fluid into a product water storage tank, sending the penetrating fluid into a user after being detected to be qualified to reach the discharge standard required by an owner, sending the concentrated solution after the secondary DTRO into a secondary DTRO concentrated solution storage tank, and sending the concentrated solution of the secondary DT;
low-temperature evaporation water treatment section: and when the concentration liquid of the water treatment system of the low-temperature evaporator reaches 10-15 times of the preset value, the concentration liquid contains high salt and is sent to a low-temperature evaporation dryer for drying and then is sent out.
In the invention: the special filter in the pretreatment working section is a nano-scale filter pore size, so that large-particle solid garbage in the kitchen garbage leachate can be effectively treated in one step, and preliminary screening is performed for subsequent treatment.
In the invention: the discharge standard after the kitchen waste leachate treatment is GB/T18920 plus 2002, sewage which meets the national urban sewage discharge standard is treated, the burden brought by the kitchen waste leachate in the city can be effectively relieved, and the DTRO process and the low-temperature evaporation process can be combined according to different requirements of users on the water treatment discharge standard of the kitchen waste leachate so as to meet different effluent standards, such as: the sewage is discharged into water quality standards such as urban sewer water quality standard GB/T31962-2015, urban waste water recycling urban miscellaneous water quality (GB/T18920-.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (3)
1. The utility model provides a kitchen garbage filtration liquid's sewage treatment discharge to reach standard technology, includes kitchen garbage filtration liquid, three-phase centrifuge, filtration liquid storage tank, delivery pump, filter, pH surge tank and one-level DTRO, its characterized in that: the discharge process comprises the following three sections:
a pretreatment working section: collecting sewage at the outlet of the three-phase centrifuge in a percolate storage tank, conveying the sewage into a special filter by a conveying pump, removing large-particle substances, then conveying the sewage into a first-stage special filter to remove more than 80% of solid solution, conveying the penetrating fluid into an intermediate filtering water storage tank, conveying the penetrating fluid into a second-stage special filter by the conveying pump to remove more than 99.9% of solid solution, and treating the second-stage penetrating fluid sewage by the second-stage special filter to obtain effluent SS which is less than or equal to 1000 mg/L; the concentrated solution of the first-stage special filter is sent to a low-temperature evaporation dryer to remove water and dry, organic matters with required water content are sent to a three-phase centrifuge and then an organic product collecting and transporting system, distilled water is sent to the pH adjusting storage tank, and the concentrated solution of the second-stage special filter is sent to a percolate storage tank for circulation treatment;
DTRO treatment section: after passing through a pH adjusting tank, when the pH of the sewage is about 6.8, sending the sewage into a primary DTRO for treatment, sending penetrating fluid after primary DTRO into a primary penetrating fluid storage tank, sending the penetrating fluid into a secondary DTRO for treatment by a primary penetrating fluid conveying pump, sending concentrated solution after the primary DTRO into a primary DTRO concentrated solution storage tank, sending the concentrated solution into a low-temperature evaporator system for treatment by a primary DTRO concentrated solution conveying pump, sending the penetrating fluid of the primary DTRO and condensed fluid generated by the low-temperature evaporator system into the secondary DTRO for treatment, sending the penetrating fluid into a product water storage tank, sending the penetrating fluid into a user after being detected to be qualified to reach the discharge standard required by an owner, sending the concentrated solution after the secondary DTRO into a secondary DTRO concentrated solution storage tank, and sending the concentrated solution of the secondary DT;
low-temperature evaporation water treatment section: and when the concentration liquid of the water treatment system of the low-temperature evaporator reaches 10-15 times of the preset value, the concentration liquid contains high salt and is sent to a low-temperature evaporation dryer for drying and then is sent out.
2. The sewage treatment standard-reaching discharge process of the kitchen waste leachate according to claim 1, characterized in that: the special filter in the pretreatment working section is a nano-scale filter pore size.
3. The sewage treatment standard-reaching discharge process of the kitchen waste leachate according to claim 1, characterized in that: the discharge standard of the kitchen waste leachate after treatment is GB/T18920-2002.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110177642.9A CN112960834A (en) | 2021-02-08 | 2021-02-08 | Sewage treatment standard-reaching discharge process for kitchen waste leachate |
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| CN202110177642.9A CN112960834A (en) | 2021-02-08 | 2021-02-08 | Sewage treatment standard-reaching discharge process for kitchen waste leachate |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006239578A (en) * | 2005-03-03 | 2006-09-14 | Kurita Water Ind Ltd | Apparatus and method for treating water containing ammoniacal nitrogen and soluble salts |
| CN105366748A (en) * | 2015-11-18 | 2016-03-02 | 天津壹帆水务有限公司 | Jet evaporation system for membrane filtration concentrated solution of landfill leachate |
| US20160251239A1 (en) * | 2014-01-09 | 2016-09-01 | Tsinghua University | Method and apparatus for processing radioactive wastewater |
| CN110240342A (en) * | 2019-06-26 | 2019-09-17 | 山东百川集大环境工程有限公司 | A kind of arid and cold region garbage leachate treatment device and method |
| CN210505923U (en) * | 2019-07-18 | 2020-05-12 | 烟台金正环保科技有限公司 | Assembly line for treating landfill leachate |
| CN111499062A (en) * | 2019-10-17 | 2020-08-07 | 昆明金泽实业有限公司 | Two-stage treatment process for landfill leachate based on DTRO and MVR |
-
2021
- 2021-02-08 CN CN202110177642.9A patent/CN112960834A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006239578A (en) * | 2005-03-03 | 2006-09-14 | Kurita Water Ind Ltd | Apparatus and method for treating water containing ammoniacal nitrogen and soluble salts |
| US20160251239A1 (en) * | 2014-01-09 | 2016-09-01 | Tsinghua University | Method and apparatus for processing radioactive wastewater |
| CN105366748A (en) * | 2015-11-18 | 2016-03-02 | 天津壹帆水务有限公司 | Jet evaporation system for membrane filtration concentrated solution of landfill leachate |
| CN110240342A (en) * | 2019-06-26 | 2019-09-17 | 山东百川集大环境工程有限公司 | A kind of arid and cold region garbage leachate treatment device and method |
| CN210505923U (en) * | 2019-07-18 | 2020-05-12 | 烟台金正环保科技有限公司 | Assembly line for treating landfill leachate |
| CN111499062A (en) * | 2019-10-17 | 2020-08-07 | 昆明金泽实业有限公司 | Two-stage treatment process for landfill leachate based on DTRO and MVR |
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Application publication date: 20210615 |