CN106186195A - Improve reverse osmosis water disposal facility and the method for treating water of the reverse osmosis response rate - Google Patents
Improve reverse osmosis water disposal facility and the method for treating water of the reverse osmosis response rate Download PDFInfo
- Publication number
- CN106186195A CN106186195A CN201610761284.5A CN201610761284A CN106186195A CN 106186195 A CN106186195 A CN 106186195A CN 201610761284 A CN201610761284 A CN 201610761284A CN 106186195 A CN106186195 A CN 106186195A
- Authority
- CN
- China
- Prior art keywords
- water
- dense
- reverse osmosis
- dense water
- counter
- 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.)
- Pending
Links
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
- C02F1/44—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/08—Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/10—Accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/12—Controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
- B01D65/06—Membrane cleaning or sterilisation ; Membrane regeneration with special washing compositions
-
- 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
- C02F2301/04—Flow arrangements
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nanotechnology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to a kind of reverse osmosis water disposal facility improving the reverse osmosis response rate, including pickling system, counter-infiltration system, return-flow system；Pickling system includes water inlet end, water side, pickling medicament addition device；Counter-infiltration system includes that water inlet end, high-pressure pump, reverse osmosis unit, dense water water side, product water water side and dense water power move drain valve；Return-flow system includes dense water water inlet end, dense water-circulating pump, former backwash water valve, dense water water side；Utilizing the method for treating water of said apparatus, pending water is entered counter-infiltration system, produce Water circulation, arrange outside the dense water of part, the dense water of part is refluxed by concentrate recirculation system, and recirculation water is back to reverse osmosis unit and carries out reverse-osmosis treated；In the continuous reflux course of dense water, often run a period of time, carry out the least flushing and a pickling, effectively reduce the impact of concentration polarization, greatly reduce fouling and pollution so that system, in the case of raw water quality is more severe, still maintains the higher response rate.
Description
Technical field
The invention belongs to Waste Water Reuse technical field, particularly to a kind of reverse osmosis water improving the reverse osmosis response rate
Processing means and method for treating water.
Background technology
Water is as " blood " of industry, the industrial various aspects of wide participation.In petrochemical iy produced, mainly as heat
Medium, heat carrier and process water, participate in technique production, device drives and heat exchange, along with improving constantly of water-use efficiency,
The recycling rate of waterused of water raises, and causes the salt content being ultimately discharged into sewerage to present the situation concentrating accumulation；It addition, along with former
The raw material containing salt component such as oil and outsourcing acid, alkali etc. adds technique and produces, and the salt content the most all causing sewerage is liter
High trend.Follow-up carry out reusing sewage during, in order to meet the recycle-water user demand for control to every salt index,
Recycle-water is carried out desalting processing and becomes the process procedure that must take into.And reverse osmosis process is along with film product cost price
The feature such as efficient, stable constantly declining and being had, get a lot of applications in reusing sewage desalinating process.
But tradition two sections of reverse osmosis unit response rate of one-level typically can only achieve about 65%, as improved the response rate further
Must increase new dense water reclamation system, investment is big, and energy consumption is high, and operation controls complexity, and therefore, research and probe can improve tradition
The new technology of the reverse osmosis unit response rate and new technique, have higher current demand and advance.
Patent CN 104724842 A discloses a kind of reverse osmosis water treatment system and method for treating water, and the present invention is whole
In individual water treatment procedure, reverse osmosis treatment device runs more stable, and water outlet quality and efficiency all improve, and can realize
Classification desalination, reduce further the osmotic pressure of reverse osmosis treatment device, shortcoming be when in dense water indissoluble salinity time too high saturated
Precipitation causes fouling, blocks reverse osmosis treatment device, reduces the response rate of system.
Summary of the invention
The present invention solves that technical problem present in known technology provides a kind of water utilization rate that improves, economize on
Water cost, improves the reverse osmosis unit response rate and invests little, reduces operating cost, and operation controls the simple raising reverse osmosis response rate
Reverse osmosis water disposal facility and method for treating water.
The present invention solves that technical problem is adopted the technical scheme that present in known technology:
A kind of reverse osmosis water disposal facility improving the reverse osmosis response rate, it is characterised in that: water treatment facilities includes pickling
System, counter-infiltration system, return-flow system；Wherein pickling system includes water inlet end, water side, pickling medicament addition device；Reverse osmosis
Permeable system includes that water inlet end, high-pressure pump, reverse osmosis unit, dense water water side, product water water side and dense water power move drain valve；Return
Streaming system includes dense water water inlet end, dense water-circulating pump, former backwash water valve, dense water water side；
Pickling medicament addition device is connected to the water inlet end of counter-infiltration system, in counter-infiltration system, and high-pressure pump and reverse osmosis
The water inlet end of system is connected, and the water inlet end of counter-infiltration system connects reverse osmosis unit, reverse osmosis unit and dense water water side and
Producing water water side to connect, dense water power moves drain valve and is connected to the dense water water side of counter-infiltration system；Dense water in return-flow system enters
Water end (W.E.) is connected with the dense water water side of counter-infiltration system, and the dense water water side of return-flow system connects with the water inlet end of counter-infiltration system
Connect；Dense water-circulating pump is connected with dense water water side with the dense water water inlet end in return-flow system, and former backwash water valve is connected to backflow system
Dense water water side in system.
The present invention also provides for a kind of method for treating water improving the reverse osmosis response rate, it is characterised in that: comprise the steps:
1), installation and debugging reverse osmosis water disposal facility, described reverse osmosis water disposal facility uses described in the claims 1
Reverse osmosis water disposal facility；
2), pending water entrance counter-infiltration system is carried out reverse-osmosis treated, produce Water circulation, arrange outside the dense water of part；Part
Dense water enters return-flow system and refluxes, and recirculation water is back to counter-infiltration system and carries out reverse-osmosis treated；
3), being added up by constantly backflow, the electrical conductivity of feed water by reverse osmosis constantly raises, when being increased to 4500-6500ms/m
Rear dense water power moves drain valve and opens, and dense water all discharges, and dense water retention stops circulating reflux；When conductance of intaking recovers to former water, weight
Multiple above-mentioned running (2)；
4), in the continuous reflux course of dense water, often running 30-45min, dense water valve is fully open, carries out little flushing 3-
5min, this is a cycle, and little flushing refers to open all dense waterpipe valves, forms the situation that flow increases, enters in film
Row impact is rinsed；Running 28-43 cycle every day, every day carries out 1-5 pickling in running；Pickling uses impact
Acid adding carries out acid treatment, each pickling 5-15min with soaking the mode combined, and soaks 1-5min every time, rinses 1-every time
10min, prevents fouling from being dissolved by established dirt simultaneously.
The present invention has the advantage that with good effect: dense for reverse osmosis part water is returned to by the present invention by dense water-circulating pump
System front end, utilizes conductivity analyzer to control to discharge the electronic dense valve of dense water, when dense electrical conductivity of water reaches certain value,
Carry out pickling, effectively reduce the impact of concentration polarization, greatly reduce fouling and pollution so that system is at raw water quality
In the case of more severe, still maintain the higher response rate；
One section of reverse osmosis reflux of one-level, floor space is little, is refluxed by dense water section by return-flow system, add into
Discharge and flow velocity, form scouring capability, the trend having delayed pollutant to deposit in reverse osmosis membrane to reverse osmosis membrane, reduce
Pollution to reverse osmosis membrane, effectively extends the service life of reverse osmosis membrane；By the control of dense water electrodynamic valve, improve water
The utilization rate of resource.
Accompanying drawing explanation
Fig. 1 is the reverse osmosis water disposal facility structural representation of the present invention；
In figure: 100, pickling system；101, water inlet end；102, water side；103, pickling medicament addition device；200, reverse osmosis
Permeable system；201, water inlet end；202, high-pressure pump；203, reverse osmosis unit；204, dense water water side；205, is produced from water water side；
206, dense water power moves drain valve；300, return-flow system；301, dense water water inlet end；302, dense water-circulating pump；303, former backwash water valve；
304, dense water water side.
Detailed description of the invention
For the summary of the invention of the present invention, feature and effect can be further appreciated that, hereby enumerate following example, and coordinate accompanying drawing
Describe in detail as follows:
Referring to Fig. 1, a kind of reverse osmosis water disposal facility improving the reverse osmosis response rate, water treatment facilities includes pickling system
System 100, counter-infiltration system 200, return-flow system 300；Wherein pickling system includes water inlet end 101, water side 102, pickling medicament
Throwing device 103；Counter-infiltration system 200 include water inlet end 201, high-pressure pump 202, reverse osmosis unit 203, dense water water side 204,
Produce water water side 205 and dense water power moves drain valve 206；Return-flow system 300 includes dense water water inlet end 301, dense water-circulating pump
302, former backwash water valve 303, dense water water side 304；
Pickling medicament addition device 103 is connected to the water inlet end 101 of counter-infiltration system, in counter-infiltration system, high-pressure pump 202
Being connected with the water inlet end 101 of counter-infiltration system, the water inlet end 201 of counter-infiltration system 200 connects reverse osmosis unit 203, reverse osmosis
Device 203 is connected with dense water water side 204 and product water water side 205 thoroughly, and dense water power moves drain valve 206 and is connected to counter-infiltration system
Dense water water side 204；Dense water water inlet end 301 in return-flow system 300 connects with the dense water water side 204 of counter-infiltration system 200
Connecing, the dense water water side 304 of return-flow system 300 is connected with the water inlet end 201 of counter-infiltration system 200；Dense water-circulating pump 302 with return
Dense water water inlet end 301 in streaming system 300 is connected with dense water water side 304, and former backwash water valve 303 is connected in return-flow system
Dense water water side 304.
A kind of method for treating water improving the reverse osmosis response rate, comprises the steps:
1), installation and debugging reverse osmosis water disposal facility, described reverse osmosis water disposal facility uses described in the claims 1
Reverse osmosis water disposal facility；
2), pending water entrance counter-infiltration system is carried out reverse-osmosis treated, produce Water circulation, arrange outside the dense water of part；Part
Dense water enters return-flow system and refluxes, and recirculation water is back to counter-infiltration system and carries out reverse-osmosis treated；
3), being added up by constantly backflow, the electrical conductivity of feed water by reverse osmosis constantly raises, when being increased to 4500-6500ms/m
Rear dense water power moves drain valve and opens, and dense water all discharges, and dense water retention stops circulating reflux；When conductance of intaking recovers to former water, weight
Multiple above-mentioned running (2)；
4), in the continuous reflux course of dense water, often running 30-45min, dense water valve is fully open, carries out little flushing 3-
5min, this is a cycle, runs 28-43 cycle every day, and every day carries out 1-5 pickling in running；Pickling uses
Impact acid adding carries out acid treatment, each pickling 5-15min with soaking the mode combined, and soaks 1-5min every time, rinses every time
1-10min, prevents fouling from being dissolved by established dirt simultaneously.
Embodiment in detail below illustrates.
Embodiment 1, a kind of water treatment technology improving the reverse osmosis response rate, comprise the steps:
1), pending water being entered counter-infiltration system, produce Water circulation, arrange outside the dense water of part, the dense water of part is returned by dense water
Streaming system refluxes, and recirculation water is back to reverse osmosis unit and carries out reverse-osmosis treated；
2), in the continuous reflux course of dense water, often running 30min, dense water valve is fully open, carries out little flushing 3min, this
Being a cycle, run 43 cycles every day, every day carries out 1 pickling in running；Pickling use impact acid adding with
Soak the mode combined and carry out acid treatment, each pickling 10min, soak 3min every time, rinse 4min every time, prevent fouling simultaneously
Established dirt is dissolved.
Actual moving process, the accumulative response rate reaches 85%, the response rate effectively improves 20%, system stable operation
Cycle is 15 days.
Embodiment 2, a kind of water treatment technology improving the reverse osmosis response rate, comprise the steps:
1), pending water being entered counter-infiltration system, produce Water circulation, arrange outside the dense water of part, the dense water of part enters backflow system
System refluxes, and recirculation water is back to reverse osmosis unit and carries out reverse-osmosis treated；
2), in the continuous reflux course of dense water, often running 35min, dense water valve is fully open, carries out little flushing 4min, this
Being a cycle, run 36 cycles every day, every day carries out 1-2 pickling in running；Pickling uses impact acid adding
Carry out acid treatment, each pickling 12min with soaking the mode combined, soak 4min every time, rinse 5min every time, prevent fouling same
Time established dirt is dissolved.
Actual moving process, the accumulative response rate reaches 85%, the response rate effectively improves 20%, system stable operation
Cycle is 15 days.
Embodiment 3, a kind of water treatment technology improving the reverse osmosis response rate, comprise the steps:
1), pending water being entered counter-infiltration system, produce Water circulation, arrange outside the dense water of part, the dense water of part enters backflow system
System refluxes, and recirculation water is back to reverse osmosis unit and carries out reverse-osmosis treated；
2), in the continuous reflux course of dense water, often running 45min, dense water valve is fully open, carries out little flushing 5min, this
Being a cycle, run 28 cycles every day, every day carries out 3-4 pickling in running；Pickling uses impact acid adding
Carry out acid treatment, each pickling 15min with soaking the mode combined, soak 5min every time, rinse 6min every time, prevent fouling same
Time established dirt is dissolved.
Actual moving process, the accumulative response rate reaches 85%, the response rate effectively improves 20%, system stable operation
Cycle is 15 days.
The above is only to presently preferred embodiments of the present invention, and the present invention not makees any pro forma restriction,
Every technical spirit according to the present invention, to any simple modification made for any of the above embodiments, equivalent variations and modification, belongs to
In the range of technical solution of the present invention.
Claims (2)
1. the reverse osmosis water disposal facility improving the reverse osmosis response rate, it is characterised in that: water treatment facilities includes pickling system
System, counter-infiltration system, return-flow system；Wherein pickling system includes water inlet end, water side, pickling medicament addition device；Reverse osmosis
System includes that water inlet end, high-pressure pump, reverse osmosis unit, dense water water side, product water water side and dense water power move drain valve；Backflow
System includes dense water water inlet end, dense water-circulating pump, former backwash water valve, dense water water side；
Pickling medicament addition device is connected to the water inlet end of counter-infiltration system, in counter-infiltration system, and high-pressure pump and counter-infiltration system
Water inlet end be connected, the water inlet end of counter-infiltration system connects reverse osmosis unit, reverse osmosis unit and dense water water side and product water
Water side connects, and dense water power moves drain valve and is connected to the dense water water side of counter-infiltration system；Dense water water inlet end in return-flow system
Being connected with the dense water water side of counter-infiltration system, the dense water water side of return-flow system is connected with the water inlet end of counter-infiltration system；Dense
Water-circulating pump is connected with dense water water side with the dense water water inlet end in return-flow system, and former backwash water valve is connected in return-flow system
Dense water water side.
2. the method for treating water improving the reverse osmosis response rate, it is characterised in that: comprise the steps:
1), installation and debugging reverse osmosis water disposal facility, it is anti-that described reverse osmosis water disposal facility uses described in the claims 1
Infiltration water treatment facilities；
2), pending water entrance counter-infiltration system is carried out reverse-osmosis treated, produce Water circulation, arrange outside the dense water of part；The dense water of part
Entering return-flow system to reflux, recirculation water is back to counter-infiltration system and carries out reverse-osmosis treated；
3), being added up by constantly backflow, the electrical conductivity of feed water by reverse osmosis constantly raises, dense water power after being increased to 4500-6500
Dynamic drain valve is opened, and dense water all discharges, and dense water retention stops circulating reflux；When conductance of intaking recovers to former water, repeat above-mentioned fortune
Row process (2)；
4), in the continuous reflux course of dense water, often running 30-45min, dense water valve is fully open, is rinsed 3-5min, and this is
In one cycle, running 28-43 cycle every day, every day carries out 1-5 pickling in running；Pickling uses impact acid adding
Carry out acid treatment, each pickling 5-15min with soaking the mode combined, soak 1-5min every time, rinse 1-10min every time, anti-
Only established dirt is dissolved by fouling simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610761284.5A CN106186195A (en) | 2016-08-29 | 2016-08-29 | Improve reverse osmosis water disposal facility and the method for treating water of the reverse osmosis response rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610761284.5A CN106186195A (en) | 2016-08-29 | 2016-08-29 | Improve reverse osmosis water disposal facility and the method for treating water of the reverse osmosis response rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106186195A true CN106186195A (en) | 2016-12-07 |
Family
ID=58089115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610761284.5A Pending CN106186195A (en) | 2016-08-29 | 2016-08-29 | Improve reverse osmosis water disposal facility and the method for treating water of the reverse osmosis response rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106186195A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106745520A (en) * | 2016-12-21 | 2017-05-31 | 中国能源建设集团浙江省电力设计院有限公司 | A kind of device and method for keeping reverse osmosis concentrated water salt content stable |
| CN108380051A (en) * | 2018-03-13 | 2018-08-10 | 江苏中电创新环境科技有限公司 | A kind of stabilizing energy-saving type counter-infiltration system and its control method |
| CN113856469A (en) * | 2021-11-08 | 2021-12-31 | 莱特莱德(上海)技术有限公司 | Curve micro-force-conducting system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08252599A (en) * | 1995-03-17 | 1996-10-01 | Kurita Water Ind Ltd | Immersion type membrane separation device |
| CN102452704A (en) * | 2010-11-01 | 2012-05-16 | 中国石油化工股份有限公司 | Anti-pollution reverse osmosis device and use method thereof |
| CN103553183A (en) * | 2013-11-14 | 2014-02-05 | 戈亮 | Desalting device with high recovery rate |
-
2016
- 2016-08-29 CN CN201610761284.5A patent/CN106186195A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08252599A (en) * | 1995-03-17 | 1996-10-01 | Kurita Water Ind Ltd | Immersion type membrane separation device |
| CN102452704A (en) * | 2010-11-01 | 2012-05-16 | 中国石油化工股份有限公司 | Anti-pollution reverse osmosis device and use method thereof |
| CN103553183A (en) * | 2013-11-14 | 2014-02-05 | 戈亮 | Desalting device with high recovery rate |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106745520A (en) * | 2016-12-21 | 2017-05-31 | 中国能源建设集团浙江省电力设计院有限公司 | A kind of device and method for keeping reverse osmosis concentrated water salt content stable |
| CN108380051A (en) * | 2018-03-13 | 2018-08-10 | 江苏中电创新环境科技有限公司 | A kind of stabilizing energy-saving type counter-infiltration system and its control method |
| CN108380051B (en) * | 2018-03-13 | 2023-06-20 | 江苏中电创新环境科技有限公司 | Stable energy-saving reverse osmosis system and control method thereof |
| CN113856469A (en) * | 2021-11-08 | 2021-12-31 | 莱特莱德(上海)技术有限公司 | Curve micro-force-conducting system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103301753B (en) | Washing method for preventing reverse osmosis membrane or nano-filtration membrane from being polluted | |
| CN103663759B (en) | High-recovery-rate saline wastewater membrane combination and separation process and application | |
| CN102674590A (en) | Method for treating and recycling heavy metal wastewater by double-membrane process | |
| CN103073123A (en) | Metal plating wastewater recycle using and recycling technology process | |
| CN204454757U (en) | A kind of electroplating rinse water online recycling Zero discharging system | |
| CN106186195A (en) | Improve reverse osmosis water disposal facility and the method for treating water of the reverse osmosis response rate | |
| CN104944647A (en) | Capacitance type sewage and waste water treatment device and method based on action of direct current electric field | |
| CN106365274A (en) | Technological device and technological method for carrying out desalting treatment on underground water by using electrically-driven ionic membrane | |
| CN202208665U (en) | Circuit board cleaning wastewater recycling system | |
| CN202430070U (en) | Heavy metal wastewater treatment and recycling equipment using two-membrane process | |
| CN210528699U (en) | Landfill leachate treatment system with biochemical effluent softening function | |
| CN201942574U (en) | Water-saving membrane separate-quality water supply water purifier | |
| CN203602414U (en) | System for recovering silvering wastewater and silver | |
| CN105906084A (en) | Hair product industry dyeing liquid wastewater recycling and reuse treatment device and operation method thereof | |
| CN202808500U (en) | Circulating cooling water treatment system | |
| CN205925448U (en) | Modular membrane treatment equipment | |
| CN105214506A (en) | The high-efficiency washing method of milipore filter in the process of Metallurgical Waste Water advanced desalination | |
| CN111455444A (en) | Treatment device and method for fully recycling electroplating rinse water | |
| CN204454775U (en) | A kind of trivalent chromium passivation Wastewater zero-discharge treatment system | |
| CN104118949A (en) | A cold-rolling wastewater treating process | |
| CN204265554U (en) | A kind of wiring board Cleaning Wastewater cleansing and recycling system | |
| CN110395828A (en) | A kind of cold rolling wastewater desalting system and method | |
| CN110975633A (en) | Osmotic membrane cleaning system based on osmotic pressure difference | |
| CN201722222U (en) | Electroplating industry waste water treatment device by integrated film separation method | |
| CN210764774U (en) | Cold rolling waste water desalination system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161207 |
|
| RJ01 | Rejection of invention patent application after publication |