CN201857317U - Reverse osmosis recovery system for concentrated water - Google Patents
Reverse osmosis recovery system for concentrated water Download PDFInfo
- Publication number
- CN201857317U CN201857317U CN201020589686XU CN201020589686U CN201857317U CN 201857317 U CN201857317 U CN 201857317U CN 201020589686X U CN201020589686X U CN 201020589686XU CN 201020589686 U CN201020589686 U CN 201020589686U CN 201857317 U CN201857317 U CN 201857317U
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- reverse osmosis
- water
- concentrated water
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- softening agent
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- Treatment Of Water By Ion Exchange (AREA)
Abstract
The utility model discloses a reverse osmosis recovery system for concentrated water, comprising a first reverse osmosis device, wherein the first reverse osmosis device is provided with a treated water outlet and a concentrated water outlet, and a temporary water storage tank is connected with the concentrated water outlet of the first reverse osmosis device; the temporary water storage tank is connected with a filtering apparatus through a first water pump, the filtering apparatus is connected with a second reverse osmosis device through a second water pump, and a softener is connected between the filtering apparatus and the second reverse osmosis device; and one end of a reverse osmosis concentrated water tank is connected with a concentrated water outlet of the second reverse osmosis device, the other end is connected with the softener in a communication manner through a third water pump, the softener is provided with a regenerated wastewater outlet, and the second reverse osmosis device is provided with a treated water outlet. The introduction of the softener not only prevents the reverse osmosis devices from easily suffering scale formation and saves the cost, but also greatly increases the wastewater recovery rate and reduces the wastewater discharge volume.
Description
Technical field
The utility model relates to the recovery system that a kind of plant effuent is handled, and relates in particular to a kind of reverse osmosis concentrated water reclamation system.
Background technology
The principle that reverse osmosis water is handled is: semi-permeable membranes separates solution and neat solvent, because exist concentration difference, neat solvent can be to the diffusion of solution one side, and this just cries infiltration.If in solution one side pressurization, make pressure surpass osmotic pressure, then the solvent of solution one side can be towards neat solvent one side flow, thereby realizes separating of solute and solvent that this just cries reverse osmosis.Reverse osmosis is for general under the situation that normal temperature do not undergo phase transition, and solute is separated with water, is applicable to the separation of heat-sensitive material and concentrates; Compare with the separation method that phase transformation is arranged, energy consumption is lower.Therefore in industrial sewage was handled, reverse osmosis unit was through being usually used in removing inorganic salts, organic impurities, bacterium, virus etc.
Existing plant effuent recovery and processing system is referring to shown in the accompanying drawing 1, the sewage that the needs that the various preparation process of factory produce reclaim enters into first reverse osmosis unit 1 through after the reverse-osmosis treated, water after the processing is discharged from water port and is reused, dense water after the processing enters into buffer memory water tank 2, lifting by lift pump 3 is sent in the strainer 4 and filters (generally adopting the double filtration of more medium filter 41 and charcoal filter 42) then, and then enter into second reverse osmosis unit 6 by lift pump 5 and carry out the reverse-osmosis treated second time, water after the processing is discharged from water port and is reused, and the dense water after the processing directly discharges.
The practical experience that existing plant effuent is handled shows, the existing waste water reclamation rate of twice reverse-osmosis treated that adopts is greatly about about 65%, think that in a large number the dense water that cannot handle is again directly emitted in addition, and in the operation practice, find all to be rich in heavy metal ion in the general plant effluent, the reverse osmosis membrane of reverse osmosis unit is very easy to fouling, thereby make the life-span of reverse osmosis membrane extremely short, often need to change, directly increased the cost of wastewater treatment.
Summary of the invention
Deficiency at existing sewage recovery and processing system, the purpose of this utility model provides a kind of new reverse osmosis concentrated water reclamation system, by introducing softening agent, not only make reverse osmosis unit be not easy to take place fouling, save cost, and the waste water reclamation rate is greatly improved, reduced wastewater discharge.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of reverse osmosis concentrated water reclamation system, comprise first reverse osmosis unit, described first reverse osmosis unit is provided with a treating water water port and concentrated water drainage outlet, the buffer memory water tank that connects described first reverse osmosis unit concentrated water drainage outlet, described buffer memory water tank is connected with a filtration unit by a lift pump, described filtration unit is connected with second reverse osmosis unit by a lift pump, between described filtration unit and described second reverse osmosis unit, be connected with a softening agent, one reverse osmosis concentrated water tank one end connects the concentrated water drainage outlet of described second reverse osmosis unit, the other end is connected with the softening agent conducting by a lift pump, described softening agent is provided with a regeneration waste outlet, and described second reverse osmosis unit is provided with a treating water water port.
Further, described filtration unit is the filtration unit that is provided with flat plate ultrafiltration membrane.
Further, described softening agent is a Na-ion exchanger.
The effect of this patent is:
The principle of work of softening agent is: because water hardness mainly is the positively charged ion by wherein: calcium (Ca2+), magnesium (Mg2+) ion constitute, when the former water that contains hardness ions passes through the Na-ion exchanger resin layer, sodium ion in calcium in the water, magnesium ion and the resin is replaced, resin absorption calcium, magnesium ion and sodium ion enters in the water, effusive water is exactly the softening water that has removed hardness ions in the interchanger like this.Along with constantly carrying out of exchange process, just lost function of exchange after Na+ is all put out in the resin, must use Nacl solution that resin is regenerated this moment, and Ca2+, the Mg2+ of resin absorption replaced, resin has adsorbed sodium ion again, could recover softening exchange capacity.
In the whole reverse osmosis concentrated water reclamation system of this patent, entering softening agent after the dense water process filtration unit filtration through a reverse-osmosis treated softens, calcium wherein, sodium ion in magnesium ion and the softening agent resin is replaced, effusive water is exactly to have removed hardness ions and the softening water that contains sodium ion in the softening agent, softening water is through reusing after the reverse-osmosis treated for the second time, dense water after the reverse-osmosis treated enters into softening agent once more, because the concentration through the sodium ion in the dense water after the reverse-osmosis treated is very big, when entering in the softening agent once more, just in time be equivalent to softening agent is regenerated, Ca2+ with resin absorption, Mg2+ replaces, resin adsorbs sodium ion again, recovered softening exchange capacity, and cement out contain Ca2+, the dense water of Mg2+ discharges as regenerative wastewater.Behind so softening process through softening agent, one to make the treating water that enters into second reverse osmosis unit be soft water, thereby avoided the fouling of reverse osmosis membrane to greatest extent, the rate of recovery obviously increased after the water after two processes are softening carried out reverse-osmosis treated, generally can reach 85%.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified;
Fig. 1 is a prior art reverse osmosis treatment system synoptic diagram;
Fig. 2 is the reverse osmosis concentrated water reclamation system synoptic diagram of the utility model;
The number in the figure explanation:
1,11. first reverse osmosis units, 2,21 buffer memory water tanks 3,31,5,51,9, lift pump
4,43, filtration unit 41, more medium filter 42, activated charcoal filter
6,61, second reverse osmosis unit 7, softening agent 8, reverse osmosis concentrated water tank
Embodiment
As Fig. 2 is the reverse osmosis concentrated water reclamation system synoptic diagram of the utility model; A kind of reverse osmosis concentrated water reclamation system, comprise first reverse osmosis unit 11, first reverse osmosis unit 11 is provided with a treating water water port and concentrated water drainage outlet, the buffer memory water tank 21 that connects the outlet of the first reverse osmosis unit concentrated water drainage, buffer memory water tank 21 is connected with a filtration unit 43 by a lift pump 31, filtration unit is the filtration unit that is provided with flat plate ultrafiltration membrane, and flat plate ultrafiltration membrane adopts commercially available standard model to get final product.Filtration unit 43 is connected with second reverse osmosis unit 61 by a lift pump 51, is connected with a softening agent 7 between the filtration unit 43 and second reverse osmosis unit 61, and softening agent 7 adopts commercially available sodium ionomer resin interchanger to get final product.One reverse osmosis concentrated water tank 8 one ends connect the concentrated water drainage outlet of second reverse osmosis unit 61, the other end is connected with softening agent 7 conductings by a lift pump 9, softening agent 7 is provided with a regeneration waste outlet and is used to discharge regenerative wastewater, and second reverse osmosis unit 61 is provided with a treating water water port and is used to carry out the recovery of product water.
Those skilled in the art will recognize that; above-mentioned embodiment is exemplary; be in order to make those skilled in the art can better understand this patent content; should not be construed as is restriction to this patent protection domain; change or modify so long as disclose spiritual any being equal to of being done, all fall into this patent protection domain according to this patent.
Claims (3)
1. reverse osmosis concentrated water reclamation system, comprise first reverse osmosis unit, described first reverse osmosis unit is provided with a treating water water port and concentrated water drainage outlet, the buffer memory water tank that connects described first reverse osmosis unit concentrated water drainage outlet, described buffer memory water tank is connected with a filtration unit by a lift pump, described filtration unit is connected with second reverse osmosis unit by a lift pump, it is characterized in that:
Between described filtration unit and described second reverse osmosis unit, be connected with a softening agent, one reverse osmosis concentrated water tank one end connects the concentrated water drainage outlet of described second reverse osmosis unit, the other end is connected with the softening agent conducting by a lift pump, described softening agent is provided with a regeneration waste outlet, and described second reverse osmosis unit is provided with a treating water water port.
2. reverse osmosis concentrated water reclamation system according to claim 1 is characterized in that:
Described filtration unit is the filtration unit that is provided with flat plate ultrafiltration membrane.
3. reverse osmosis concentrated water reclamation system according to claim 1 is characterized in that:
Described softening agent is a Na-ion exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020589686XU CN201857317U (en) | 2010-11-03 | 2010-11-03 | Reverse osmosis recovery system for concentrated water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020589686XU CN201857317U (en) | 2010-11-03 | 2010-11-03 | Reverse osmosis recovery system for concentrated water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201857317U true CN201857317U (en) | 2011-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201020589686XU Expired - Lifetime CN201857317U (en) | 2010-11-03 | 2010-11-03 | Reverse osmosis recovery system for concentrated water |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102627364A (en) * | 2012-04-17 | 2012-08-08 | 南京丹恒科技有限公司 | Process flow for recycling and treating reverse osmosis concentrated water |
| CN102633389A (en) * | 2012-03-28 | 2012-08-15 | 中国人民解放军军事医学科学院卫生装备研究所 | Method and device for getting fresh water by treating reverse osmosis concentrated water |
| CN102849879A (en) * | 2012-10-11 | 2013-01-02 | 北京机电院高技术股份有限公司 | Treatment technology for recycling reverse osmosis concentrated water |
| CN105431383A (en) * | 2013-05-29 | 2016-03-23 | 利哈伊大学 | Brackish water desalination using tunable anion exchange bed |
| CN105502786A (en) * | 2015-12-22 | 2016-04-20 | 天津市尚拓环保科技有限公司 | Salt separation and concentrated water treatment process of high-concentration reverse osmosis concentrated water |
| CN108675505A (en) * | 2018-07-18 | 2018-10-19 | 金川集团股份有限公司 | A kind of processing system and method for reverse osmosis concentrated water |
-
2010
- 2010-11-03 CN CN201020589686XU patent/CN201857317U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102633389A (en) * | 2012-03-28 | 2012-08-15 | 中国人民解放军军事医学科学院卫生装备研究所 | Method and device for getting fresh water by treating reverse osmosis concentrated water |
| CN102627364A (en) * | 2012-04-17 | 2012-08-08 | 南京丹恒科技有限公司 | Process flow for recycling and treating reverse osmosis concentrated water |
| CN102849879A (en) * | 2012-10-11 | 2013-01-02 | 北京机电院高技术股份有限公司 | Treatment technology for recycling reverse osmosis concentrated water |
| CN105431383A (en) * | 2013-05-29 | 2016-03-23 | 利哈伊大学 | Brackish water desalination using tunable anion exchange bed |
| CN105502786A (en) * | 2015-12-22 | 2016-04-20 | 天津市尚拓环保科技有限公司 | Salt separation and concentrated water treatment process of high-concentration reverse osmosis concentrated water |
| CN105502786B (en) * | 2015-12-22 | 2018-06-29 | 天津市尚拓环保科技有限公司 | A kind of reverse osmosis concentrated moisture salt of high concentration and concentrated water treatment process |
| CN108675505A (en) * | 2018-07-18 | 2018-10-19 | 金川集团股份有限公司 | A kind of processing system and method for reverse osmosis concentrated water |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110608 |