CN109179834A - A kind of dangerous waste landfill percolate treatment process and its dedicated unit - Google Patents
A kind of dangerous waste landfill percolate treatment process and its dedicated unit Download PDFInfo
- Publication number
- CN109179834A CN109179834A CN201811087847.2A CN201811087847A CN109179834A CN 109179834 A CN109179834 A CN 109179834A CN 201811087847 A CN201811087847 A CN 201811087847A CN 109179834 A CN109179834 A CN 109179834A
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- Prior art keywords
- dangerous waste
- waste landfill
- dosing
- intake pump
- percolate
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 239000002699 waste material Substances 0.000 title claims abstract description 26
- 238000011282 treatment Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 150000003839 salts Chemical class 0.000 claims abstract description 18
- 238000002425 crystallisation Methods 0.000 claims abstract description 17
- 230000008025 crystallization Effects 0.000 claims abstract description 17
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 11
- 238000007254 oxidation reaction Methods 0.000 claims description 21
- 238000001704 evaporation Methods 0.000 claims description 18
- 230000008020 evaporation Effects 0.000 claims description 18
- 239000010802 sludge Substances 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 239000000356 contaminant Substances 0.000 claims description 13
- 239000013078 crystal Substances 0.000 claims description 13
- 230000003647 oxidation Effects 0.000 claims description 13
- 238000001556 precipitation Methods 0.000 claims description 13
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 11
- 238000009833 condensation Methods 0.000 claims description 7
- 230000005494 condensation Effects 0.000 claims description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 239000003344 environmental pollutant Substances 0.000 claims description 5
- 229910052755 nonmetal Inorganic materials 0.000 claims description 5
- 239000005416 organic matter Substances 0.000 claims description 5
- 239000002957 persistent organic pollutant Substances 0.000 claims description 5
- 231100000719 pollutant Toxicity 0.000 claims description 5
- 239000004571 lime Substances 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 239000007800 oxidant agent Substances 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 150000002843 nonmetals Chemical class 0.000 claims 1
- 238000005115 demineralization Methods 0.000 abstract 1
- 230000002328 demineralizing effect Effects 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 description 3
- 230000001376 precipitating effect Effects 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002920 hazardous waste Substances 0.000 description 2
- 239000012452 mother liquor Substances 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 206010016326 Feeling cold Diseases 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 235000012204 lemonade/lime carbonate Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- 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
Landscapes
- 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)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention discloses a kind of dangerous waste landfill percolate treatment process and its dedicated units, dangerous waste landfill percolate is pre-processed, is aoxidized, the treatment processes such as evaporative crystallization, the purpose of realization goes removing heavy metals, water demineralization, high concentration salt resource utilization, condensed water to meet reuse requirement, water resource has not only been saved, more inexpensive dangerous waste landfill percolate processing is realized.
Description
Technical field
The present invention relates to industrial waste water treatments, are specifically exactly that one kind is related to the processing of dangerous waste landfill percolate
Technique and its dedicated unit.
Background technique
Hazardous waste is mainly derived from the poisonous and harmful substance of industrial enterprise, and carrying out the landfill stage into landfill yard can generate
Percolate, this percolate are a kind of toxic high-concentration waste waters of complicated component, and variation water quality is big, contains a large amount of salts, nothing
Machine pollutant (such as heavy metal contaminants, non-heavy metal pollutant), ammonia nitrogen, volatile organic solvent are harmful if dealing with improperly
Ingredient easily causes secondary pollution to surface water, underground water and soil.Therefore, the low cost of dangerous waste landfill percolate how is realized
Processing is the important link for solving dangerous waste landfill yard pollution environment.
Since leachate quality is complicated and changeable, salt content is high, there is no very perfect treatment process in industry.Currently, with
Mainly there are physical-chemical process, reverse osmosis treatment method, land law, evaporation knot in the more mature method of processing dangerous waste landfill percolate
Crystallization etc. or the above method combine.But landfill yard investment is big, operational and administrative expenses is high, and landfill yard is caused to be unable to reach expected processing
Target and environmentally friendly purpose, it is therefore desirable to develop dangerous waste landfill percolate processing technique with low investment, that effect is good.
About the processing method of dangerous waste landfill percolate, Chinese patent CN105130075A discloses a kind of processing side
Method, using alkali tune, flocculation sedimentation, mud-water separation, ammonia-nitrogen desorption, evaporation and concentration and solidification landfill step.In this method, ammonia nitrogen is blown
De- process energy consumption is big, and processing cost is higher, and the by-product ammonium sulfate that ammonia-nitrogen desorption technique generates, and disposition is asked
Topic does not solve;Secondly, lacking organic matter removal step in front-end process, cause to contain largely not in the mother liquor of evaporative crystallization
Labile organic matter, needs subsequent cure to handle, and increases processing difficulty and cost.Meanwhile by the method treated steam
For lime set of feeling cold because containing a large amount of volatile organic solvents, not up to discharge water standard limitation does not also embody method of disposal.
Chinese patent CN206173158U discloses a kind of hazardous waste landfill garbage percolation liquid treating system, including
Preprocessing subsystem and evaporation and concentration subsystem.But the method that the patent illustrates is similar with above-mentioned patent, precipitable in pretreatment
The pollutants such as heavy metal, but lack organic matter removal technique, exist such as etch evaporator, fouling in subsequent evaporation process
Problem.Equally, though evaporation condensed water water quality is stablized, there are low-boiling-point organic compounds, and water quality is not up to standard, and there is still a need for lifes for subsequent technique
The processing of change method.Last concentrate solution is intended to carry out burning disposal, increases atmosphere pollution risk after solid phase separates.
Summary of the invention
The present invention is directed to above-mentioned technological deficiency existing in the prior art, provides a kind of dangerous waste landfill percolate processing work
Skill and its dedicated unit, process provides a kind of inexpensive, innoxious, minimizing processing methods, can both realize landfill yard
The removal of complicated ingredient in percolate, such as high concentration salt, heavy metal contaminants, organic pollutant, ammonia nitrogen, while can also obtain
To recycling condensing water up to standard, the pollution to environment is reduced, water resource has been saved, has reduced dangerous waste landfill percolate and be processed into
This, has significant economic benefit and social benefit.
Technical solution
To achieve the goals above, the present invention provides a kind of dangerous waste landfill percolate treatment process, which is characterized in that it
Including the following steps:
(1) dangerous waste landfill percolate is subjected to pH value and adjusts pretreatment, remove the heavy metal contaminants in percolate
And non-metal contaminants, the water outlet after obtaining sludge and softening;
(2) water outlet in step (1) is subjected to oxidation reaction, removes inorganic and insoluble organic pollutant and ammonia in water removal
Nitrogen;
(3) water outlet in step (2) is evaporated crystallization, dope is dried to obtain crystal salt, recycling condensing water.
Further, by the way that lime or piece alkali and sodium carbonate regulating solution pH value is added in step (1) preprocessing process
Between 9~12, heavy metal contaminants and non-metal contaminants are removed, obtained sludge is handled, the water outlet after softening
Carry out the oxidation reaction processing of next step.
Further, in the step (2) in oxidation reaction process by adding oxidant, by step (1) water outlet in have
Machine object, ammonia nitrogen removal guarantee the water quality reaching standard of subsequent evaporation crystallization process.
A kind of dedicated unit of dangerous waste landfill percolate treatment process, it is characterised in that: it includes precipitation reaction pond, oxygen
Change reactor, evaporation and crystallization system, crystal salt recyclable device, sludge treating system, percolate former pond, intermediate water tank, condensation
Water tank, dosing A unit, dosing unit B, the first intake pump, the second intake pump, third intake pump, the 4th intake pump, the first dosing
Pump and the second dosing pump;
The percolate former pond is connect with precipitation reaction pond, and the first intake pump is housed on connecting line, and the precipitating is anti-
The sludge output end of Ying Chi is connect with sludge treating system;The dosing A unit is connect with precipitation reaction pond, is filled on connecting line
There is the first dosing pump;Precipitation reaction pond output end is connect with oxidation reactor, and the second intake pump is housed on connecting line;Institute
It states dosing unit B to connect with oxidation reactor, the second dosing pump is housed on connecting line;The output end of the oxidation reactor with
Intermediate water tank connects, and third intake pump is housed in connecting line;The output end of the intermediate water tank is connect with evaporation and crystallization system,
4th intake pump is housed on connecting line;The crystal salt output end of the evaporation and crystallization system is connect with crystal salt recyclable device,
Condensed water output end connects condensation water tank.
Beneficial effect
A kind of dangerous waste landfill percolate treatment process provided by the invention and its dedicated unit, process provides one kind
Inexpensive, innoxious, minimizing processing method, can both realize the removal of complicated ingredient in landfill percolate, such as high concentration
Salt, heavy metal contaminants, organic pollutant, ammonia nitrogen etc., while recycling condensing water up to standard also can be obtained, reduce the dirt to environment
Dye, has saved water resource, has reduced dangerous waste landfill percolate processing cost, has significant economic benefit and social benefit.
Detailed description of the invention
Attached drawing 1 is the process flow chart of the embodiment of the present invention.
Attached drawing 2 is the equipment of the embodiment of the present invention connection relationship diagram.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention will be further described.
Embodiment
As shown in Fig. 2, the dedicated unit of dangerous waste landfill percolate treatment process, it is characterised in that: it includes precipitating
Reaction tank 1, oxidation reactor 2, evaporation and crystallization system 3, crystal salt recyclable device 4, sludge treating system 5, percolate former pond
6, intermediate water tank 7, condensation water tank 8, dosing A unit 9, dosing unit B 10, the first intake pump 11, the second intake pump 12, third into
Water pump 13, the 4th intake pump 14, the first dosing pump 15, the second dosing pump 16;
The percolate former pond 6 is connect with precipitation reaction pond 1, and the first intake pump 11 is housed on connecting line;Precipitating is anti-
The sludge output end in pond 1 is answered to connect with sludge treating system 5;Dosing A unit 9 is connect with precipitation reaction pond 1, is filled on connecting line
There is the first dosing pump 15;1 output end of precipitation reaction pond is connect with oxidation reactor 2, and the second intake pump 12 is housed on connecting line;
Dosing unit B 10 is connect with oxidation reactor 2, and the second dosing pump 16 is housed on connecting line;The output end of oxidation reactor 2 with
Intermediate water tank 7 connects, and third intake pump 13 is housed in connecting line;The output end and evaporation and crystallization system 3 of intermediate water tank 7 connect
It connects, the 4th intake pump 14 is housed on connecting line;The crystal salt output end and crystal salt recyclable device 4 of evaporation and crystallization system 3 connect
It connects, condensed water output end connects condensation water tank 8.
Dangerous waste landfill percolate treatment process is carried out using above-mentioned special equipment, it including the following steps:
The first step, dangerous waste landfill percolate are placed in precipitation reaction pond 1 by adjusting pH pretreatment, remove weight in percolate
Metal pollutant and non-metal contaminants, the water outlet after obtaining sludge and softening;During this, white lime and sodium carbonate tune is added
Water-saving pH value is to remove heavy metal contaminants and non-metal contaminants, obtained sludge is in Treatment of Sludge system between 9~12
It is handled in system, the water after softening, which enters, carries out oxidation reaction process in oxidation reactor.
Water outlet in the first step is entered and carries out oxidation reaction process in oxidation reactor 2 by second step, is gone inorganic in water removal
And insoluble organic pollutant and ammonia nitrogen;During this, by adding appropriate such as sodium hypochlorite oxidant, step (1) is discharged
Organic matter, ammonia nitrogen removal, guarantee to be evaporated the water quality reaching standard of crystallization process.
Water outlet in second step is entered evaporation and crystallization system 3 by third step, and dope is dried to obtain crystal salt, and condensed water returns
With;Evaporation condensate is free of low-boiling-point organic compound, and water quality reaches the three-level mark in " integrated wastewater discharge standard " GB8978-1996
Quasi- emission limit requirement;It is up to standard to evaporate post mother liquor, obtains crystal salt after dope is dry, is not required to additional curing processing.
Structure depicted in this specification institute accompanying drawings of the embodiment of the present invention, ratio, size, quantity etc., only to cooperate specification
Revealed content is not intended to limit the invention enforceable restriction item so that those skilled in the art understands and reads
Part, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing
Under the effect of present invention can be generated and the purpose that can reach, it should all still fall in disclosed technology contents and obtain and can contain
In the range of lid.Meanwhile it is cited such as "upper", "lower", "left", "right", " centre ", " clockwise ", " inverse time in this specification
The term of needle " etc. is merely convenient to being illustrated for narration, rather than to limit the scope of the invention, relativeness
It is altered or modified, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the present invention.
Claims (4)
1. a kind of dangerous waste landfill percolate treatment process, which is characterized in that it including the following steps:
(1) dangerous waste landfill percolate is subjected to pH value and adjusts pretreatment, remove the heavy metal contaminants and non-in percolate
Metal pollutant, the water outlet after obtaining sludge and softening;
(2) water outlet in step (1) is subjected to oxidation reaction, removes inorganic and insoluble organic pollutant and ammonia nitrogen in water removal;
(3) water outlet in step (2) is evaporated crystallization, dope is dried to obtain crystal salt, recycling condensing water.
2. a kind of dangerous waste landfill percolate treatment process as described in claim 1, it is characterised in that: the step (1) is pre-
By lime or piece alkali being added and sodium carbonate regulating solution pH value is between 9~12 in treatment process, by heavy metal contaminants and
Non-metal contaminants remove, and obtained sludge is handled, and the water outlet after softening carries out the oxidation reaction processing of next step.
3. a kind of dangerous waste landfill percolate treatment process as described in claim 1, it is characterised in that: in the step (2)
By adding oxidant in oxidation reaction process, by organic matter, the ammonia nitrogen removal in step (1) water outlet, guarantee subsequent evaporation knot
The water quality reaching standard of brilliant process.
4. a kind of dangerous waste landfill percolate treatment process described in any one of the claims 1~3 claim is special
With device, it is characterised in that: it includes precipitation reaction pond (1), oxidation reactor (2), evaporation and crystallization system (3), crystal salt time
Receiving apparatus (4), sludge treating system (5), percolate former pond (6), intermediate water tank (7), condensation water tank (8), dosing A unit
(9), dosing unit B (10), the first intake pump (11), the second intake pump (12), third intake pump (13), the 4th intake pump
(14), the first dosing pump (15) and the second dosing pump (16);
The percolate former pond (6) connect with precipitation reaction pond (1), and the first intake pump (11) are housed on connecting line, described
The sludge output end in precipitation reaction pond (1) is connect with sludge treating system (5);The dosing A unit (9) and precipitation reaction pond
(1) it connects, the first dosing pump (15) is housed on connecting line;Precipitation reaction pond (1) output end and oxidation reactor (2) are even
It connects, the second intake pump (12) is housed on connecting line;The dosing unit B (10) connect with oxidation reactor (2), connecting line
It is upper that second dosing pump (16) are housed;The output end of the oxidation reactor (2) is connect with intermediate water tank (7), is filled in connecting line
There are third intake pump (13);The output end of the intermediate water tank (7) is connect with evaporation and crystallization system (3), is equipped on connecting line
4th intake pump (14);The crystal salt output end of the evaporation and crystallization system (3) is connect with crystal salt recyclable device (4), condensation
Water output end connects condensation water tank (8).
Priority Applications (1)
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CN201811087847.2A CN109179834A (en) | 2018-09-18 | 2018-09-18 | A kind of dangerous waste landfill percolate treatment process and its dedicated unit |
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CN201811087847.2A CN109179834A (en) | 2018-09-18 | 2018-09-18 | A kind of dangerous waste landfill percolate treatment process and its dedicated unit |
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Publication Number | Publication Date |
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CN109179834A true CN109179834A (en) | 2019-01-11 |
Family
ID=64911978
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CN201811087847.2A Pending CN109179834A (en) | 2018-09-18 | 2018-09-18 | A kind of dangerous waste landfill percolate treatment process and its dedicated unit |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111573985A (en) * | 2020-05-27 | 2020-08-25 | 四川省工业环境监测研究院 | Waste water treatment method for garbage penetrating fluid treatment |
Citations (2)
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---|---|---|---|---|
CN106315984A (en) * | 2016-09-30 | 2017-01-11 | 江西东江环保技术有限公司 | Treatment method of landfill leachate |
CN107827291A (en) * | 2017-09-26 | 2018-03-23 | 上海晶宇环境工程股份有限公司 | Percolate reverse osmosis concentration liquor treating process and special equipment |
-
2018
- 2018-09-18 CN CN201811087847.2A patent/CN109179834A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106315984A (en) * | 2016-09-30 | 2017-01-11 | 江西东江环保技术有限公司 | Treatment method of landfill leachate |
CN107827291A (en) * | 2017-09-26 | 2018-03-23 | 上海晶宇环境工程股份有限公司 | Percolate reverse osmosis concentration liquor treating process and special equipment |
Non-Patent Citations (1)
Title |
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全国勘察设计注册工程师环保专业管理委员会等: "注册环保工程师专业考试复习教材 第3分册 下", 中国环境科学出版社, pages: 134 - 300 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111573985A (en) * | 2020-05-27 | 2020-08-25 | 四川省工业环境监测研究院 | Waste water treatment method for garbage penetrating fluid treatment |
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