CN207418444U - A kind of wastewater treatment equipment for contaminated site in-situ immobilization engineering - Google Patents
A kind of wastewater treatment equipment for contaminated site in-situ immobilization engineering Download PDFInfo
- Publication number
- CN207418444U CN207418444U CN201721238378.0U CN201721238378U CN207418444U CN 207418444 U CN207418444 U CN 207418444U CN 201721238378 U CN201721238378 U CN 201721238378U CN 207418444 U CN207418444 U CN 207418444U
- Authority
- CN
- China
- Prior art keywords
- wastewater treatment
- treatment equipment
- contaminated site
- situ immobilization
- equipment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The utility model discloses a kind of wastewater treatment equipment for contaminated site in-situ immobilization engineering, which includes the regulating reservoir set gradually, combination pond, sand filtration apparatus, carbon filtration equipment and discharge bay;Combination pond is cell structure, and the lattice equipped with several series connection, each lattice are set to coagulation area, precipitation-air-flotation area, chemical oxidation area successively.Regulating reservoir is by the gravity oil removal sedimentary adjustive pool of each ingredient precipitated and separated in sewage by gravity, is respectively equipped with water outlet at the liquid level being respectively layered formed in heterogeneity, thief hatch is further respectively had in each water outlet.Sand filtration apparatus is quartz filter.Carbon filtration equipment is active carbon filter.Discharge bay be equipped with water quality detection equipment, treated effluent storage detected in discharge bay it is up to standard after receive pipe discharge.Wastewater treatment equipment provided by the utility model for contaminated site in-situ immobilization engineering, operation operation is flexible, can effectively handle waste water, solves existing issue.
Description
Technical field
The utility model is related to a kind of wastewater treatment equipments, and in particular, to one kind is used for contaminated site in-situ immobilization work
The wastewater treatment equipment of journey.
Background technology
It is organic that thermal desorption (Thermal Desorption) technology is widely portable to volatile organic matter, half volatile
Object, the original position of petroleum hydrocarbon or mercury pollution place or showering.The technology is by way of directly or indirectly heating, by dirt
Dye soil and/or underground water are heated to the boiling point close to even more than target contaminant, are held by control system temperature and high temperature
The continuous time selectively promotes target contaminant to desorb, gasify, volatilize, decompose or increase its mobility, makes target contaminant
It separates, remove with soil media, so as to fulfill the purpose of contaminated site reparation.
Thermal desorption recovery technique in situ can in situ be implemented in contaminated site, without carrying out the work such as excavating to contaminated soil
Industry is mainly made of place In Situ Heating unit, pollutant extracting with recovery unit and waste water/emission-control equipment etc..
At present, thermal desorption recovery technique in situ at home contaminated site repair in engineer application it is still relatively limited, limit
The main reason for making its popularization and application includes the complicated various problems such as more intractable of wastewater property.
Utility model content
The purpose of this utility model is to provide a kind of wastewater treatment equipment, for handling contaminated site in-situ immobilization engineering
The waste water of the generation of concentrated combustion formula thermal desorption reparation, solves existing difficulty.
In order to achieve the above object, the utility model is provided at a kind of waste water for contaminated site in-situ immobilization engineering
Manage device, wherein, the wastewater treatment equipment include set gradually regulating reservoir, combination pond, sand filtration apparatus, carbon filtration equipment with
And discharge bay;Above each processing equipment is connected by pipeline, and several valves are respectively equipped on pipeline;The combination pond is lattice
Structure, the lattice equipped with several series connection, each lattice are set to coagulation area, precipitation-air-flotation area, chemical oxidation area etc. successively.
The above-mentioned wastewater treatment equipment for contaminated site in-situ immobilization engineering, wherein, the regulating reservoir is to pass through
Gravity is by the gravity oil removal sedimentary adjustive pool of each ingredient precipitated and separated in sewage.The regulating reservoir is preferably vertical cylinder
Shape structure.
The above-mentioned wastewater treatment equipment for contaminated site in-situ immobilization engineering, wherein, the regulating reservoir is in difference
Water outlet is respectively equipped at the liquid level being respectively layered that ingredient is formed, the regulating reservoir is respectively equipped in each water outlet and adopts
Sample mouth.The water outlet of each water outlet collects is passed through combination pond again in the duct.Water quality is carried out in the form of oil removal sedimentary adjustive pool
Runoff investigation and gravity oil removal precipitation, are equipped with water outlet and thief hatch, according to possible light oil in waste water in different liquid levels
The solid particulate matters delaminations such as class, heavy oils and silt select suitable water exit position.
The above-mentioned wastewater treatment equipment for contaminated site in-situ immobilization engineering, wherein, the sand filtration apparatus is stone
Sand filter.Quartz filter, scientific name shallow media filter (English:Shallow medium filter), it is profit
By the use of quartz sand as filter medium, under pressure, the higher water of turbidity is passed through certain thickness granular or non-grain
Quartz sand filtration, effective retention remove suspended matter, organic matter, colloidal particles, microorganism, chlorine, odor and part weight in water
Metal ion etc., being finally reached reduces water turbidity, a kind of High-cfficiency Filtration equipment for the effect that purifies water.
The above-mentioned wastewater treatment equipment for contaminated site in-situ immobilization engineering, wherein, the carbon filtration equipment is work
Property carbon filter.Active carbon filter is a kind of more common water treatment facilities, is a kind of filtering instrument of tank body, and shell is general
For stainless steel or fiberglass, filling activated carbon in inside was used for educt in drainage, microorganism, part heavy metal ion,
And it can effectively reduce the colourity of water.
The above-mentioned wastewater treatment equipment for contaminated site in-situ immobilization engineering, wherein, the coagulation area, which is equipped with, throws
Add the medicine machine of coagulant, blender is additionally provided in the coagulation area.
The above-mentioned wastewater treatment equipment for contaminated site in-situ immobilization engineering, wherein, in the precipitation-air-flotation area
Equipped with tube settler and air floatation machine.The tube settler includes intake chamber and processing pond, the top of intake chamber be equipped with into
The mouth of a river, the water inlet are connected with the water outlet in coagulation area.Preferably, in the connecting pipe of the water inlet and the water outlet in coagulation area
Equipped with force (forcing) pump.The bottom of intake chamber is connected with the bottom of processing pond, is installed in processing pond above body refuse superposed layer several flat
Capable inclined tube, the inclination angle of the inclined tube is 60 °.The bottom of processing pond is equipped with sludge hopper and sludge pipe.The top of processing pond
Equipped with catch basin, the end of catch basin is equipped with water outlet, which is located at the opposite of the processing pond side wall adjacent with intake chamber
The top of side wall.The water inlet of the water outlet and air floatation machine connects.The water outlet in coagulation area is by the water inlet of intake chamber into tiltedly
Pipe settling vessel, then enter processing pond from water inlet trench bottom, from lower to upper through several inclined tubes, particle leads to water (flow) direction in processing pond
It crosses inclined tube tube wall to be precipitated, and sinks to the bottom of processing pond, discharge is collected by sludge hopper and sludge pipe, liquid is in inclined tube
It is flowed out by catch basin from water outlet top.
The above-mentioned wastewater treatment equipment for contaminated site in-situ immobilization engineering, wherein, the chemical oxidation area is set
There is the medicine machine for adding oxidant, blender is additionally provided in the chemical oxidation area.Using reaction combination pond form into
Row coagulation, precipitation/air supporting and Advanced oxidation technologies combine design of the pond by multiple lattices, realize dosing coagulation, precipitation/gas
The floating, different running method of chemical oxidation.
The above-mentioned wastewater treatment equipment for contaminated site in-situ immobilization engineering, wherein, the discharge bay is equipped with water
Quality inspection measurement equipment, treated waste water are stored temporarily in discharge bay, and pipe of being received after detection is up to standard discharges.
The above-mentioned wastewater treatment equipment for contaminated site in-situ immobilization engineering, wherein, the wastewater treatment equipment,
Each processing equipments such as its regulating reservoir, combination pond, sand filtration apparatus, carbon filtration equipment and discharge bay are respectively provided with bypass and surmount pipeline, just
It is adjusted flexibly in operation operation.
Wastewater treatment equipment provided by the utility model for contaminated site in-situ immobilization engineering has the following advantages:
The device is received in the concentrated combustion formula thermal desorption renovation technique from processing contaminated site in-situ immobilization engineering
The polluted underground water, cold that Polluted area extracts before well-points dewatering generates between two layers of cement-soil-stirred pile waste water, system heating
Qualified discharge after collection liquid that demister generates before condensate liquid and vacuum pump that solidifying separating technology generates etc. is handled.Consider
The waste water quality that entire hot repair process generates has complexity and diversity and repairs different phase waste water water quantity and quality
Variability, waste water treatment process needs to use more flexible design form, therefore employs water quality and quantity adjusting-gravity oil removal
The technological design of precipitation-dosing coagulation-precipitation/air supporting-Advanced oxidation technologies-sand filtration-activated carbon filtering.Water quality and quantity adjust and
Gravity oil removal depositing technology uses the form of oil removal sedimentary adjustive pool, and pond body is equipped with water outlet and thief hatch in different liquid levels,
Water level is suitably gone out according to the solid particulate matters delamination such as possible lightweight oils, heavy oils and silt selection in waste water
It puts.Using the form in reaction combination pond, combination pond passes through multiple lattices for coagulation, precipitation/air supporting and Advanced oxidation technologies technique
Dosing coagulation, precipitation/air supporting, the different running method of chemical oxidation are realized in design.Reaction combination sets sand filtration and activity behind pond
Charcoal filter device further improves the treatment effeciency of pollutant by advanced treating.Treated waste water is discharged into discharge bay and faces
When store, detection it is up to standard after receive pipe discharge.Processing equipments at different levels are respectively provided with bypass and surmount pipeline in wastewater treatment equipment, convenient for fortune
Row operation is adjusted flexibly.
Description of the drawings
Fig. 1 is the structure diagram of the wastewater treatment equipment for contaminated site in-situ immobilization engineering of the utility model.
Fig. 2 is that the combination pool structure of the wastewater treatment equipment for contaminated site in-situ immobilization engineering of the utility model shows
It is intended to.
Specific embodiment
Specific embodiment of the present utility model is further described below in conjunction with attached drawing.
As shown in Figure 1, the wastewater treatment equipment provided by the utility model for contaminated site in-situ immobilization engineering, comprising
Regulating reservoir 1, combination pond 2, sand filtration apparatus, carbon filtration equipment and the discharge bay 3 set gradually;Above each processing equipment passes through pipeline
It connects, several valves 4 is respectively equipped on pipeline.
Regulating reservoir 1 is by the gravity oil removal sedimentary adjustive pool of each ingredient precipitated and separated in sewage by gravity.It adjusts
Water outlet 5 is respectively equipped at the liquid level being respectively layered that section pond 1 is formed in heterogeneity, regulating reservoir 1 is punished in each water outlet
It She You not thief hatch 6.The water outlet of each water outlet 5 collects is passed through combination pond 2 again in the duct.Using the shape of oil removal sedimentary adjustive pool
Formula carries out water quality and quantity adjusting and gravity oil removal precipitation, water outlet 5 and thief hatch 6 is equipped in different liquid levels, according in waste water
The solid particulate matters delaminations such as possible lightweight oils, heavy oils and silt select suitable water exit position.
Combination pond 2 be cell structure, the lattice equipped with several series connection, each lattice be set to successively coagulation area 7, precipitation-air-flotation area 8,
Chemical oxidation area 9 etc..
Coagulation area 7 is equipped with the medicine machine 10 of dosing coagulant, and blender 11 is additionally provided in coagulation area 7.Precipitation-air-flotation area 8
It is interior to be equipped with tube settler 12 and air floatation machine 13.Chemical oxidation area 9 is equipped with the medicine machine 10 for adding oxidant, chemical oxidation area
Blender 11 is additionally provided in 9.Coagulation, precipitation/air supporting and Advanced oxidation technologies are carried out in the form of pond is combined in reaction, combine pond
By the design of multiple lattices, dosing coagulation, precipitation/air supporting, the different running method of chemical oxidation are realized.
Sand filtration apparatus is quartz filter 14.Carbon filtration equipment is active carbon filter 15.
Discharge bay 3 is equipped with water quality detection equipment 16, and treated waste water is stored temporarily in after detection is up to standard in discharge bay
Pipe of receiving discharges.
Each processing such as regulating reservoir 1, combination pond 2, sand filtration apparatus, carbon filtration equipment and the discharge bay 3 of wastewater treatment equipment are set
Surmount pipeline 17 for bypass is respectively provided with, be adjusted flexibly convenient for operation operation.
The wastewater treatment provided by the utility model for contaminated site in-situ immobilization engineering is filled with reference to embodiment
It puts and is further described.
Embodiment 1
A kind of wastewater treatment equipment for contaminated site in-situ immobilization engineering comprising the regulating reservoir 1 set gradually, combines
Pond 2, sand filtration apparatus, carbon filtration equipment and discharge bay 3;Above each processing equipment is connected by pipeline, and valve is respectively equipped on pipeline
Door 4.
Regulating reservoir 1 is by the gravity oil removal sedimentary adjustive pool of each ingredient precipitated and separated in sewage by gravity.It adjusts
Water outlet 5 is respectively equipped at the liquid level being respectively layered that section pond 1 is formed in heterogeneity, regulating reservoir is punished in each water outlet 5
It She You not thief hatch 6.The water outlet of each water outlet 5 collects is passed through combination pond 2 again in the duct.The regulating reservoir 1 is preferably vertical cylinder
Shape structure.
As shown in Fig. 2, combination pond 2 is cell structure, the lattice equipped with several series connection, each lattice are set to coagulation area 7, sink successively
Shallow lake air flotation zone 8, chemical oxidation area 9 etc..
Coagulation area 7 is equipped with the medicine machine 10 of dosing coagulant, and blender 11 is additionally provided in coagulation area 7.
Tube settler 12 and air floatation machine 13 are equipped in precipitation-air-flotation area 8.Tube settler 12 includes intake chamber 121 and place
Pond 122 is managed, the top of intake chamber 121 is equipped with water inlet 123, which is connected with the water outlet in coagulation area 7.Preferably,
The connecting pipe of the water inlet 123 and the water outlet in coagulation area 7 is equipped with force (forcing) pump 129.The bottom of intake chamber 121 and processing pond
122 bottom connection, processing pond 122 is interior to install several parallel inclined tubes 124, the inclination angle of inclined tube 124 above body refuse superposed layer
It is 60 °.The bottom of processing pond 122 is equipped with sludge hopper 125 and sludge pipe 126.The top of processing pond 122 is equipped with catch basin 127,
The end of catch basin 127 is equipped with water outlet 128, which is located at the side wall adjacent with intake chamber 121 of processing pond 122
The top of opposite side wall.The water outlet 128 is connected with the water inlet of air floatation machine 13.The water outlet in coagulation area 7 passes through intake chamber 121
Water inlet 123 enters tube settler 12, then enters processing pond 122 from 121 bottom of intake chamber, water (flow) direction in processing pond 122
From lower to upper through several inclined tubes 124, particle is precipitated by 124 tube wall of inclined tube, and sinks to the bottom of processing pond 122,
Discharge is collected by sludge hopper 125 and sludge pipe 126, liquid is flowed above inclined tube 124 by catch basin 127 from water outlet 128
Go out.
Chemical oxidation area 9 is equipped with the medicine machine 10 for adding oxidant, and blender 11 is additionally provided in chemical oxidation area 9.
Sand filtration apparatus is quartz filter 14.Quartz filter 14, scientific name shallow media filter (English:
Shallow medium filter), it be by the use of quartz sand as filter medium, it is under pressure, turbidity is higher
Water passes through the quartz sand filtration of certain thickness granular or non-grain, the effective suspended matter retained in removing water, organic matter, colloid
Particle, microorganism, chlorine, odor and part heavy metal ion etc., be finally reached reduce water turbidity, the effect that purifies water it is a kind of high
Imitate filter plant.
Carbon filtration equipment is active carbon filter 15.Active carbon filter 15 is a kind of more common water treatment facilities, is one
The filtering instrument of kind tank body, shell are generally stainless steel or fiberglass, and filling activated carbon in inside was used for free in drainage
Object, microorganism, part heavy metal ion, and can effectively reduce the colourity of water.
Discharge bay 3 is equipped with water quality detection equipment 16, and treated waste water is stored temporarily in after detection is up to standard in discharge bay 3
Pipe of receiving discharges.
Each processing such as regulating reservoir 1, combination pond 2, sand filtration apparatus, carbon filtration equipment and the discharge bay 3 of wastewater treatment equipment are set
Surmount pipeline 17 for bypass is respectively provided with.
Wastewater treatment equipment provided by the utility model for contaminated site in-situ immobilization engineering, front end set have compared with
The oil removal sedimentary adjustive pool of big buffer capacity, regulating reservoir are equipped with water outlet and thief hatch in different liquid levels, according to can in waste water
The solid particulate matters delaminations such as lightweight oils, heavy oils and the silt of energy select suitable water exit position, while can people
Work carries out the discharge of the solid particulate matters such as lightweight oils, heavy oils and silt.After regulating reservoir set coagulation, precipitation/air supporting,
The combination pond of chemical oxidation reaction, considers the complexity of generation waste water during site remediation, and combination pond passes through multiple lattices
Dosing coagulation, precipitation/air supporting, the different running method of chemical oxidation are realized in design.Reaction combination sets sand filtration and activity behind pond
Charcoal filter device further improves the treatment effeciency of pollutant by advanced treating.Treated waste water is discharged into discharge bay and faces
When store, detection it is up to standard after receive pipe discharge.Processing equipments at different levels are respectively provided with bypass and surmount pipeline in wastewater treatment equipment, convenient for fortune
Row operation is adjusted flexibly.
Although the content of the utility model is discussed in detail by above preferred embodiment, but it should be appreciated that on
The description stated is not considered as the limitation to the utility model.After those skilled in the art have read the above, for
A variety of modifications and substitutions of the utility model all will be apparent.Therefore, the scope of protection of the utility model should be by appended
Claim limit.
Claims (10)
- A kind of 1. wastewater treatment equipment for contaminated site in-situ immobilization engineering, which is characterized in that the wastewater treatment dress It puts comprising regulating reservoir, combination pond, sand filtration apparatus, carbon filtration equipment and the discharge bay set gradually;The combination pond is cell structure, and each lattice are set to coagulation area, precipitation-air-flotation area, chemical oxidation area successively.
- 2. the wastewater treatment equipment of contaminated site in-situ immobilization engineering to be used for as described in claim 1, which is characterized in that described Regulating reservoir be by the gravity oil removal sedimentary adjustive pool of each ingredient precipitated and separated in sewage by gravity.
- 3. the wastewater treatment equipment of contaminated site in-situ immobilization engineering to be used for as claimed in claim 2, which is characterized in that described The liquid level being respectively layered that is formed in heterogeneity of regulating reservoir at be respectively equipped with water outlet, the regulating reservoir is in each water outlet Thief hatch is respectively equipped at mouthful.
- 4. the wastewater treatment equipment of contaminated site in-situ immobilization engineering to be used for as described in claim 1, which is characterized in that described Sand filtration apparatus be quartz filter.
- 5. the wastewater treatment equipment of contaminated site in-situ immobilization engineering to be used for as described in claim 1, which is characterized in that described Carbon filtration equipment be active carbon filter.
- 6. the wastewater treatment equipment of contaminated site in-situ immobilization engineering to be used for as described in claim 1, which is characterized in that described Coagulation area be equipped with the medicine machine of dosing coagulant, be additionally provided with blender in the coagulation area.
- 7. the wastewater treatment equipment of contaminated site in-situ immobilization engineering to be used for as described in claim 1, which is characterized in that described Precipitation-air-flotation area in be equipped with tube settler and air floatation machine.
- 8. the wastewater treatment equipment of contaminated site in-situ immobilization engineering to be used for as described in claim 1, which is characterized in that described Chemical oxidation area be equipped with and add the medicine machine of oxidant, be additionally provided with blender in the chemical oxidation area.
- 9. the wastewater treatment equipment of contaminated site in-situ immobilization engineering to be used for as described in claim 1, which is characterized in that described Discharge bay be equipped with water quality detection equipment.
- 10. the wastewater treatment equipment for contaminated site in-situ immobilization engineering as described in any one in claim 1~9, It is characterized in that, the wastewater treatment equipment, regulating reservoir, combination pond, sand filtration apparatus, carbon filtration equipment and discharge bay are all provided with It puts bypass and surmounts pipeline.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201721238378.0U CN207418444U (en) | 2017-09-26 | 2017-09-26 | A kind of wastewater treatment equipment for contaminated site in-situ immobilization engineering |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201721238378.0U CN207418444U (en) | 2017-09-26 | 2017-09-26 | A kind of wastewater treatment equipment for contaminated site in-situ immobilization engineering |
Publications (1)
Publication Number | Publication Date |
---|---|
CN207418444U true CN207418444U (en) | 2018-05-29 |
Family
ID=62314072
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201721238378.0U Active CN207418444U (en) | 2017-09-26 | 2017-09-26 | A kind of wastewater treatment equipment for contaminated site in-situ immobilization engineering |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN207418444U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110668608A (en) * | 2019-11-06 | 2020-01-10 | 中科鼎实环境工程有限公司 | A processing system for polluting organic sewage of place restoration process |
CN111807561A (en) * | 2020-07-28 | 2020-10-23 | 四川华洁嘉业环保科技有限责任公司 | Reduction process for oil-containing and solid-containing wastewater |
-
2017
- 2017-09-26 CN CN201721238378.0U patent/CN207418444U/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110668608A (en) * | 2019-11-06 | 2020-01-10 | 中科鼎实环境工程有限公司 | A processing system for polluting organic sewage of place restoration process |
CN111807561A (en) * | 2020-07-28 | 2020-10-23 | 四川华洁嘉业环保科技有限责任公司 | Reduction process for oil-containing and solid-containing wastewater |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN201132782Y (en) | Purification device for oil-contaminated water and purification system with the device | |
CN102505728A (en) | Complete technology for resource utilization of rainwater | |
KR101815246B1 (en) | High efficiency composite wetland system | |
KR100891656B1 (en) | Water way type artificality marsh and building method thereof | |
CN204107978U (en) | A kind of refuse disposal system | |
CN206566598U (en) | Early-stage rainwater cuts dirty purifier | |
CN104289503A (en) | Garbage disposal system and method | |
CN102644302A (en) | Sludge processing system for watercourses and lakes and processing method thereof | |
CN101830577B (en) | Rainwater treatment device for rainwater and sewage runoff pollution treatment and method thereof | |
CN104355484B (en) | The disposal system of a kind of rubbish extrusion liquid and method | |
CN207418444U (en) | A kind of wastewater treatment equipment for contaminated site in-situ immobilization engineering | |
CN107381669A (en) | Injection-type permeable reactive barrier sewage disposal module and its processing unit | |
CN102874907B (en) | In-situ purification system for high-turbidity river water and river water treatment method | |
WO2019061869A1 (en) | Integrated rainwater treatment device | |
KR101549161B1 (en) | Non-point sources pollutants removal facility | |
CN103951136A (en) | Balcony wastewater and initial rainwater purifier and purification method used in rainwater pipe network | |
CN207608431U (en) | The siliceous water composite handling arrangement in oil field | |
Chen et al. | Hydraulic circulation technology remediates the contaminated groundwater with petroleum hydrocarbon: Evidence from laboratory and field tests | |
CN105000705A (en) | Boiler water purifying and recycling device | |
CN215855390U (en) | Rapid infiltration system integration sewage treatment device | |
CN213506361U (en) | Heavy metal pollution water body rapid treatment equipment for mining area slope cropland | |
KR100869158B1 (en) | Boiling point contaminant purification appratus and methode thereof for an early stage rain water | |
KR101532191B1 (en) | Filter backwash function blocks system for nonpoint pollution and construction method | |
KR200405662Y1 (en) | Purifying apparatus using soil microorganism for road drainage | |
CN108101274A (en) | A kind of oils high-COD waste water pretreating process and equipment |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |