CN103553183A - Desalting device with high recovery rate - Google Patents
Desalting device with high recovery rate Download PDFInfo
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- CN103553183A CN103553183A CN201310565857.3A CN201310565857A CN103553183A CN 103553183 A CN103553183 A CN 103553183A CN 201310565857 A CN201310565857 A CN 201310565857A CN 103553183 A CN103553183 A CN 103553183A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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Abstract
The invention provides a desalting device with high recovery rate. The desalting device comprises a high pressure pump, a high pressure pump one-way valve, a combined valve terminal device, two rear concentrated water discharge valves, a flushing/cleaning valve, an anti-scaling pipe, a pressure container and a water producing and collecting pipeline, wherein the combined valve terminal device comprises a front concentrated water discharge valve, a circulating pump one-way valve and a circulating/cleaning pump; an RO/NF membrane element is arranged in the front of the interior of the pressure container, a pressure container anti-scaling area is arranged at the back of the interior of the pressure container, and each component is connected through pipelines. Compared with a conventional desalting device, the desalting device provided by the invention has the advantage that the recovery rate is greatly improved, namely the water production proportion is increased. As the discharge amount of the concentrated water is small, the pressure loss of the concentrated water of the desalting device provided by the invention is also small, thus the energy consumption is reduced by 30% to 50% compared with the traditional NF/RO desalting device; and the desalting device has an energy-saving effect, and is more obvious in energy-saving advantage when high concentration salt water is treated.
Description
Technical field
The invention belongs to water treatment field, particularly a kind of desalting plant.
Background technology
Traditional RO/NF (reverse osmosis/nanofiltration) system generally adopts two-section type (referring to accompanying drawing 1), inorganic salt are concentrated gradually in system, around inorganic salt cycles of concentration is the highest for two sections of latter end membrane elements, organism and inorganic salt easily deposit fouling on film surface, make the rate of recovery reduce, cause a large amount of concentrated water discharges.
In order to prevent that this deposition fouling from occurring, general way is in the water of source, to add a kind of dirt dispersion agent, suppresses the generation of dirty class.Restricted due to Scale inhibitors state of the art, the rate of recovery is unsatisfactory, and the rate of recovery of different quality generally can only reach 60%～80%.If reach the higher rate of recovery, entering RO/NF equipment increases the techniques such as lime is softening, resin is softening before, otherwise a large amount of inorganic salt are deposited on film surface, and film is caused to damage.
Summary of the invention
In order to solve above-mentioned practical problems, the invention provides a kind of desalting plant, pollution and the fouling of film not only can be slowed down, and not increasing softening pretreatment technology, the desalting plant rate of recovery can be increased substantially.
It is as follows that the present invention solves the problems of the technologies described above adopted technical scheme:
A kind of high-recovery desalting plant, comprise high-pressure pump, high-pressure pump non-return valve, Combined valve island device, two rearmounted concentrated water discharge valves, flush/clear valve, scale inhibition pipe, pressurized vessel, product water collection pipe road, wherein Combined valve island device comprises preposition concentrated water discharge valve, recycle pump check valve, circulation/scavenging pump; The inner front portion of pressurized vessel arranges RO/NF membrane element, pressurized vessel interior rear wall arranges pressurized vessel scale inhibition district, between described each parts, by pipeline, connects;
Mode of connection is: high-pressure pump, high-pressure pump non-return valve, Combined valve island device, pressurized vessel connect successively, pressure vessel outlet is connected with product water collection pipe road and two rearmounted concentrated water discharge valves respectively, and pressure vessel outlet and Combined valve island device are connected to form closed loop; Circulation/scavenging pump entrance in the device of described Combined valve island is connected with flush/clear valve respectively; Described recycle pump check valve outlet is connected with preposition concentrated water discharge valve, pressure container inlet respectively after being connected with high-pressure pump non-return valve outlet; Scale inhibition pipe quantity is a plurality of, and scale inhibition pipe is arranged on scale inhibition district in pressurized vessel or in circulation loop or be arranged on above-mentioned two positions simultaneously.
Preposition concentrated water discharge valve action in the device of aforesaid combination Shi Fa island is to strengthen quantity discharged, the concentrated water discharge valve that install two rearmounted concentrated water discharge valve middle and upper parts that are connected with pressure vessel outlet is flush valve, can open moment, the concentrated water discharge valve that install bottom is provided with scale, capable of regulating flow quantity.
According to treatment scale, above-mentioned pressurized vessel is a plurality of, adopts parallel way, and each pressurized vessel is installed 3-7 RO/NF membrane element.
Above-mentioned pressurized vessel diameter can be 4 inches or 8 inches or 16 inches, and length depends on RO/NF membrane element and scale inhibition length of tube sum; The setting corresponding to pressurized vessel diameter of described RO/NF membrane element diameter;
Above-mentioned scale inhibition inside pipe wall, pressurized vessel inwall or circulation line inwall can be inlayed rare earth material magnetic stripe, when great deal running water passes through, produce electromotive force, make the refinement of inorganic salt lattice, needle-like crystal is converted into Powdered crystal, crystal particle diameter diminishes, thereby makes inorganic salt be not easy to be deposited on film surface, and regularly with concentrated water drainage, walks;
In above-mentioned desalting plant, membrane element can be selected rolling RO and rolling NF membrane element.Diaphragm in membrane element requires to bear pressure more than 60BAR.Common rolled film element width of flow path is 0.7～0.8mm, and after improving, membrane element width of flow path expands to 1.5～2mm, has expanded 2～3 times, can adapt to the dense water graticule mesh of big cycle volume and scantling.
Above-mentioned RO/NF membrane element comprises diaphragm and dense water graticule mesh, and this dense water graticule mesh is not traditional grid structure, but fine and close, in graticule mesh, every 3-10mm distance, there is very high projection, play the effect of strengthening graticule mesh intensity; These projections are divided into some regions by inlet conduit, make inlet distribution even, and turbulence effects is good.Graticule mesh adopts matrix material, and projection be PE neutral, and sunk part employing PAN (polyacrylonitrile) or PVDF(gather inclined to one side fluorine divinyl) or CA(cellulose acetate fibre) or PS(polystyrene) or PSF(polysulfones) etc. the positively charged material of modification.By the corresponding improvement to membrane element structure and diaphragm physicochemical property, the electronegative formation Weak magentic-field of the hollow zone positive charge in graticule mesh and diaphragm, produces lattice distortion to inorganic salt fouling, weakens the scaling tendency of inorganic salt.
Described high-recovery desalting plant also comprises monitoring equipment: enter film pressure table, concentrated water discharge tensimeter, produce water pressure table, water producing pipe road under meter, concentrated water discharge pipeline flowmeter, circulation line under meter, source water conductivity meter, dense water conductivity meter, product water conductivity meter.
The principle of work of above-mentioned desalting plant is as follows:
Water pressure after high-pressure pump in source gets a promotion, through high-pressure pump non-return valve, enter Combined valve island device, desalting treatment is carried out in the RO/NF membrane element inside that enters again pressurized vessel, after RO/NF membrane element is processed, moisture becomes two portions, a part is for removing the water of salinity, be called product water, via producing water collection pipe road, discharge and collect; Another part is the water that salinity increases, and is called dense water, in the pressurized vessel of flowing through, after scale inhibition pipe, by rearmounted concentrated water discharge valve, is directly discharged.Dense water also can enter RO/NF membrane element in pressurized vessel after by circulation/scavenging pump, recycle pump check valve by the outside closed circulation system of membrane element and carry out desalting treatment; When RO/NF membrane element generation severe contamination or fouling, start flush/clear valve and import clean-out system, RO/NF membrane element is carried out to matting.The effect of preposition concentrated water discharge valve is the dense water of system quick drain.During normal operation, flush/clear valve is in closing condition.
Above-mentioned desalting plant has following three kinds of mode of operation:
The first mode of operation: cyclic duty.When lower concentration saltiness source, water enters system, and ON cycle pump produces water simultaneously, arranges the dense water of salt concentration rising simultaneously; Utilize the instrument such as conductivity meter or under meter to monitor, during high-recovery that surpass to set, strengthen concentrated water drainage high-volume, recycle pump quits work; Lower concentration saltiness source water enters system, and the average saltiness of system reduces; Increasing concentrated water discharge through certain hour, reopens recycle pump, reduces concentrated water drainage high-volume, enters the next cycle of operation.In this mode of operation, film system works pressure, water production rate, concentrated water discharge flow fluctuate within the specific limits, and system total inflow remains constant.A cycle of operation of which, because water quality is different, at 5min～5h, wherein strengthen the time of concentrated water discharge at 5s～5min cycle time.
The second mode of operation: cyclic duty.When lower concentration saltiness source, water enters system, and ON cycle pump only has the dense water that produces water, do not arrange salt concentration rising; Utilize the instrument such as conductivity meter or under meter to monitor, during high-recovery that surpass to set, open concentrated water discharge valve, recycle pump quits work; Lower concentration saltiness source water enters system, and the average saltiness of system reduces; Concentrated water discharge through certain hour, reopens recycle pump, closes concentrated water discharge valve, enters the next cycle of operation.In this mode of operation, film system works pressure, water production rate, concentrated water discharge flow fluctuate within the specific limits, and system total inflow remains constant.A cycle of operation of which, because water quality is different, at 5min～5h, wherein open the time of concentrated water discharge at 5s～5min cycle time.
The third mode of operation: fixed mode of operation.When lower concentration saltiness source, water enters system, and ON cycle pump produces water simultaneously, arranges the dense water of salt concentration rising simultaneously; Set the constant rate of recovery, utilize electricity to lead or the instrument such as under meter is monitored.In this mode of operation, film system works pressure, water production rate, concentrated water discharge flow remain constant, and system total inflow remains constant.
During the operation of system cycle formula, preposition concentrated water discharge valve is opened together with rearmounted concentrated water discharge valve, the dense water of quick drain; During the fixed operation of system, only open the concentrated water discharge valve that has scale to regulate in rearmounted dense water valve.
Desalting plant provided by the invention is applicable to process tap water, well water, surface water, the trade effluent of the dense water of RO, seawater, low COD; If combined with other high-level oxidation technologies, can also process the high salt industrial waste water of high COD, rubbish transudate etc.
Advantage and positively effect that the present invention has are:
(1) the invention discloses a kind of high-recovery pure water desalting plant that adopts the short flow scheme design of unistage type, a plurality of pressurized vessels adopt parallel way to connect, and each pressurized vessel is installed 3-7 RO/NF membrane element.The short flow scheme design of unistage type is compared with the design of traditional two-section type (every section 6 membrane elements being installed), and the working load of every film of the short flow scheme design of unistage type is average, is beneficial to the work-ing life that extends film.This desalting plant is except normally supplementing the water of lower concentration saltiness source by high-pressure pump, in film system outside, be also provided with a loop line, carry out large flow circulation, to guarantee that every membrane element has very large flooding velocity and very high flow velocity, makes organism and inorganic salt be not easy to be deposited on film surface.Meanwhile, the actual recovered rate of film reduces, and has also slowed down organism and inorganic salt in the deposition on film surface.
(2) desalting plant provided by the invention is compared with traditional RO/NF equipment, has increased recycle pump check valve, circulation/scavenging pump, concentrated water discharge valve, has realized functions such as strengthening concentrated water discharge, the pollution that slows down film and fouling.Transformation for traditional RO/NF system, do not changing under the prerequisite of main equipment/automatic control, consider will above these functional pipelines valve install concentratedly in a region, i.e. Combined valve island device, be arranged on high-pressure pump water outlet and enter between film, being convenient to produce and equipment is managed.
(3) in desalting plant provided by the invention, by the corresponding improvement to membrane element structure and diaphragm physicochemical property, the electronegative formation Weak magentic-field of hollow zone positive charge in graticule mesh and diaphragm, produces lattice distortion to inorganic salt fouling, weakens the scaling tendency of inorganic salt.
(4) in desalting plant provided by the invention, than traditional RO/NF equipment, also increased scale inhibition pipe, scale inhibition pipe, pressurized vessel inwall and circulation line inwall are inlaid with rare earth material magnetic stripe, when great deal running water passes through, produce electromotive force, make the refinement of inorganic salt lattice, needle-like crystal is converted into Powdered crystal, crystal particle diameter diminishes, thereby makes inorganic salt be not easy to be deposited on film surface, and regularly with concentrated water drainage, walks; Meanwhile, there is abated effect in the magnetic field that scale inhibition pipe produces to the trend of dense water inorganic salt fouling.Scale inhibition pipe both can be arranged in pressurized vessel scale inhibition district, also can be arranged in circulation line, more can install, strengthen the effect that stops inorganic salt fouling. simultaneously
(5) desalting plant provided by the invention is compared with traditional desalting plant, has increased substantially the rate of recovery, produces water ratio and improves.Because concentrated water drainage is high-volume little, the dense water pressure loss of desalting plant provided by the invention also seldom, thereby the traditional NF/RO desalting plant reduction by 30%～50% of its energy loss-rate, there is energy-saving effect, particularly for example, when processing high density salt solution (seawater), power savings advantages is more obvious.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of traditional RO/NF (reverse osmosis/nanofiltration) system.
Fig. 2 is desalting plant schematic diagram of the present invention.
Wherein, the rearmounted concentrated water discharge valve of the preposition concentrated water discharge valve of 1-high-pressure pump 2-high-pressure pump non-return valve 3-combination island valvegear 4a-4b-5-recycle pump check valve 6-circulation/scavenging pump 7-flush/clear valve 8-scale inhibition pipe 9-pressurized vessel 10-RO/NF membrane element 11-scale inhibition district 12-produces the dense water C-of A-source, water collection pipe road water B-and produces water
Embodiment
By the following examples, technical scheme of the present invention is described in further detail.
As shown in Figure 2, a kind of high-recovery desalting plant, comprise high-pressure pump 1, high-pressure pump non-return valve 2, Combined valve island device 3, two rearmounted concentrated water discharge valve 4b, flush/clear valve 7, scale inhibition pipe 8, pressurized vessel 9, between described each parts, by pipeline, connect, mode of connection is: high-pressure pump 1, high pressure check valve 2, Combined valve island device 3, pressurized vessel 9 connects successively, pressurized vessel 9 outlets are connected with product water collection pipe road 12 and two rearmounted concentrated water discharge valve 4b respectively, pressurized vessel 9 outlet also successively with scale inhibition pipe 8, Combined valve island device 3 connects, pressurized vessel 9 and scale inhibition pipe 8, Combined valve island device 3 forms closed loop.Described pressurized vessel 9 is 3 parallel connections, before and after it is inner, RO/NF membrane element 10, scale inhibition district 11 is set; The interior installation scale inhibition pipe 8 in described scale inhibition district 11, described scale inhibition pipe 8 is connected with RO/NF membrane element 10 by pipeline; Described scale inhibition pipe 8 quantity are 4, and three are arranged on 11, one, the interior scale inhibition of pressurized vessel 9 district and are connected in circulation loop; Device 3 inside, described Combined valve island arrange preposition concentrated water discharge valve 4a, recycle pump check valve 5, circulation/scavenging pump 6; Described circulation/scavenging pump 6 entrances are connected with scale inhibition pipe 8 in flush/clear valve 7, circulation loop respectively; Described circulation/scavenging pump 6 outlets are connected with recycle pump check valve 5 entrances; Described recycle pump check valve 5 outlets are connected with preposition concentrated water discharge valve 4a, pressurized vessel 9 entrances respectively after being connected with high-pressure pump non-return valve 2 outlets;
Described pressurized vessel 9 diameters can be 4 inches or 8 inches or 16 inches, and length depends on RO/NF membrane element 10 and scale inhibition pipe 8 length sums; Described RO/NF membrane element 10 diameters and the corresponding setting of pressurized vessel 9 diameter;
Described RO/NF membrane element 10 width of flow paths are between 1.5-2mm; Described diaphragm can bear pressure more than 60BAR; Described RO/NF membrane element 11 comprises diaphragm and dense water graticule mesh; Between described diaphragm and dense water graticule mesh, there is small electric magnetic field; Described dense water graticule mesh is fine and close, there is at a certain distance very high projection, adopt matrix material, projection is PE neutral, and sunk part adopts PAN (polyacrylonitrile) or the poly-inclined to one side fluorine divinyl of PVDF() or CA(cellulose acetate fibre) or PS(polystyrene) or PSF(polysulfones) the positively charged material of modification.
Described high-recovery desalting plant also comprises monitoring equipment (not demonstrating in Fig. 2): enter film pressure table, concentrated water discharge tensimeter, produce water pressure table, water producing pipe road under meter, concentrated water discharge pipeline flowmeter, circulation line under meter, source water conductivity meter, dense water conductivity meter, product water conductivity meter;
Principle of work: water A pressure after high-pressure pump 1 in source gets a promotion, enter into RO/NF membrane element 10 inside by high-pressure pump non-return valve 2 again carries out desalting treatment, after RO/NF membrane element 10 is processed, moisture becomes two portions, a part is for removing the water of salinity, be called and produce water C, via producing water collection pipe road 12, discharge and collect; Another part is the water that salinity increases, and is called dense water B, after the interior scale inhibition pipe 8 of the pressurized vessel 9 of flowing through, by rearmounted concentrated water discharge valve 4b, is directly discharged.Dense water also can carry out desalting treatment by again entering the interior RO/NF membrane element 10 of pressurized vessel 9 after circulation/scavenging pump 6, recycle pump check valve 5, when there is severe contamination or fouling in RO/NF membrane element 10, start flush/clear valve 7 and import clean-out system, RO/NF membrane element 10 is carried out to matting.During the operation of system cycle formula, preposition concentrated water discharge valve 4a opens together with rearmounted concentrated water discharge valve 4b, the dense water of quick drain; During the fixed operation of system, only open the concentrated water discharge valve that has scale to regulate in rearmounted dense water valve 4b.
Practical application of the present invention:
Practical application 1: adopt the technical process of source water-sand filtration-security personnel filter-high-recovery desalting plant to TDS(total dissolved solid) be that 500mg/L, temperature are that the underground water that 26.7 ℃, pH are 7.4 carries out desalting treatment, select 16 8 inches of RO films, processing 20t per hour.Take the second mode of operation, only have the water of producing, first do not discharge dense water, then periodic discharges the mode of operation of dense water, and a cycle of operation is 10 minutes, and wherein the concentrated water discharge time is 40 seconds.System works pressure is 7-10BAR, and energy consumption is 0.73kW/t, and ratio of desalinization is 98.5%, and the rate of recovery is 95%.
Practical application 2: adopt the technical process of source water-sand filtration-security personnel filter-high-recovery desalting plant to TDS(total dissolved solid) be that 300mg/L, temperature are that the low COD waste water that 22.7 ℃, pH are 7.6 carries out desalting treatment, select 54 8 inches of RO films, processing 64t per hour.Take the third mode of operation, the mode of operation of simultaneously produce water, simultaneously arranging dense water, with the mode of operation operation of fixing.System works pressure is 9.0BAR, and energy consumption is 1.10kW/t, and ratio of desalinization is 99.0%, and the rate of recovery is 85%.
The technical process of practical application 3: adopt source water-UF(ultrafiltration)-security personnel's filter-high-recovery desalting plant is to TDS(total dissolved solid) for 700mg/L, temperature be that the dense water of RO that 19.5 ℃, pH are 7.2 carries out desalting treatment, select 96 8 inches of RO films, processing 120t per hour.Take the first mode of operation, the mode of operation of simultaneously produce water, simultaneously arranging dense water (discharge capacity is 5% of water inlet total amount), the dense water of periodic increasing discharge, a cycle of operation is 20 minutes, wherein strengthening the concentrated water drainage time is high-volume 80 seconds.System works pressure is 9-12BAR, and energy consumption is 0.85kW/t, and ratio of desalinization is 99.2%, and the rate of recovery is 90%.
Above embodiments of the invention are had been described in detail, but described content is only preferred embodiment of the present invention, can not be considered to for limiting practical range of the present invention.All equalization variations of doing according to the present patent application scope and improvement etc., within all should still belonging to patent covering scope of the present invention.
Claims (10)
1. a high-recovery desalting plant, it is characterized in that: comprise high-pressure pump, high-pressure pump non-return valve, Combined valve island device, two rearmounted concentrated water discharge valves, flush/clear valve, scale inhibition pipe, pressurized vessel, product water collection pipe road, wherein Combined valve island device comprises preposition concentrated water discharge valve, recycle pump check valve, circulation/scavenging pump; The inner front portion of pressurized vessel arranges RO/NF membrane element, pressurized vessel interior rear wall arranges pressurized vessel scale inhibition district, between described each parts, by pipeline, connects;
Mode of connection is: high-pressure pump, high-pressure pump non-return valve, Combined valve island device, pressurized vessel connect successively, pressure vessel outlet is connected with product water collection pipe road and two rearmounted concentrated water discharge valves respectively, and pressure vessel outlet and Combined valve island device are connected to form closed loop; Circulation/scavenging pump entrance in the device of described Combined valve island is connected with flush/clear valve respectively; Described recycle pump check valve outlet is connected with preposition concentrated water discharge valve, pressure container inlet respectively after being connected with high-pressure pump non-return valve outlet; Scale inhibition pipe quantity is a plurality of, and scale inhibition pipe is arranged on scale inhibition district in pressurized vessel or in circulation loop or be arranged on above-mentioned two positions simultaneously.
2. a kind of high-recovery desalting plant according to claim 1, is characterized in that: described pressurized vessel is a plurality of, adopts parallel way to connect.
3. a kind of high-recovery desalting plant according to claim 2, is characterized in that: in described pressurized vessel, each pressurized vessel is installed 3-7 RO/NF membrane element.
4. a kind of high-recovery desalting plant according to claim 1, is characterized in that: described scale inhibition inside pipe wall, pressurized vessel inwall or pipeline inner wall are inlayed rare earth material magnetic stripe.
5. a kind of high-recovery desalting plant according to claim 1, is characterized in that: in described desalting plant, membrane element width of flow path is 1.5～2mm.
6. a kind of high-recovery desalting plant according to claim 5, is characterized in that: described membrane element comprises diaphragm and dense water graticule mesh, and this dense water graticule mesh is fine and close, in graticule mesh, every 3-10mm distance, is provided with projection.
7. according to a kind of high-recovery desalting plant described in claim 6 any one, it is characterized in that: the dense water graticule mesh of described membrane element adopts matrix material, projection is PE neutral, and sunk part adopts PAN or PVDF or CA or PS or the positively charged material of PSF modification.
8. a kind of high-recovery desalting plant according to claim 1, it is characterized in that: described desalting plant also comprises monitoring equipment: enter film pressure table, concentrated water discharge tensimeter, produce water pressure table, water producing pipe road under meter, concentrated water discharge pipeline flowmeter, circulation line under meter, source water conductivity meter, dense water conductivity meter, product water conductivity meter.
9. according to a kind of high-recovery desalting plant described in claim 1-8 any one, it is characterized in that: described desalting plant has following three kinds of mode of operation:
The first mode of operation is cyclic duty, produces water simultaneously, arranges dense water simultaneously, when surpassing while setting high-recovery, strengthens concentrated water drainage high-volume; The second mode of operation is cyclic duty, only has to produce water, do not arrange dense water, when surpassing, opens concentrated water discharge while setting high-recovery; The third mode of operation is fixed mode of operation, produces water simultaneously, arranges dense water simultaneously, and concentrated water discharge does not change;
Preferably, a cycle of operation in the first mode of operation and the second mode of operation, because water quality is different, cycle time, the time of wherein strengthening concentrated water discharge or opening concentrated water discharge was at 5s～5min at 5min～5h.
10. according to the application of a kind of high-recovery desalting plant described in claim 1-8 any one, it is characterized in that: described desalting plant is applicable to process tap water, well water, surface water the trade effluent of the dense water of RO, seawater, low COD, the high salt industrial waste water of high COD, rubbish transudate.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106186195A (en) * | 2016-08-29 | 2016-12-07 | 天津市尚拓环保科技有限公司 | Improve reverse osmosis water disposal facility and the method for treating water of the reverse osmosis response rate |
| CN107915279A (en) * | 2016-10-09 | 2018-04-17 | 上海漕泾热电有限责任公司 | Reverse osmosis concentrated water treatment facilities and processing method |
| CN109336306A (en) * | 2018-11-30 | 2019-02-15 | 佛山市云米电器科技有限公司 | A kind of circulating household water purifier in part and domestic water purifying machine |
| CN110078245A (en) * | 2019-06-06 | 2019-08-02 | 淄博博立特冷冻空调设备有限公司 | A kind of systemic circulation multiplying power concentrate recirculation embrane method Sewage treatment reclaiming system |
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| CN101708877A (en) * | 2009-12-21 | 2010-05-19 | 北京市可持续发展促进会 | Energy reclaimable reverse osmosis process and energy reclaiming device thereof |
| CN203173869U (en) * | 2013-04-17 | 2013-09-04 | 浙江晶泉水处理设备有限公司 | Low-pressure water-saving reverse osmosis system |
| CN203668170U (en) * | 2013-11-14 | 2014-06-25 | 戈亮 | Desalting device with high recovery rate |
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| JPH09276863A (en) * | 1996-04-11 | 1997-10-28 | Toray Ind Inc | Reverse osmosis separation apparatus and method therefor |
| CN101708877A (en) * | 2009-12-21 | 2010-05-19 | 北京市可持续发展促进会 | Energy reclaimable reverse osmosis process and energy reclaiming device thereof |
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| CN203668170U (en) * | 2013-11-14 | 2014-06-25 | 戈亮 | Desalting device with high recovery rate |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106186195A (en) * | 2016-08-29 | 2016-12-07 | 天津市尚拓环保科技有限公司 | Improve reverse osmosis water disposal facility and the method for treating water of the reverse osmosis response rate |
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| CN109336306A (en) * | 2018-11-30 | 2019-02-15 | 佛山市云米电器科技有限公司 | A kind of circulating household water purifier in part and domestic water purifying machine |
| CN110078245A (en) * | 2019-06-06 | 2019-08-02 | 淄博博立特冷冻空调设备有限公司 | A kind of systemic circulation multiplying power concentrate recirculation embrane method Sewage treatment reclaiming system |
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