CN105906101A - Device and method for emission reduction and recycling of ion exchange regenerated waste water - Google Patents
Device and method for emission reduction and recycling of ion exchange regenerated waste water Download PDFInfo
- Publication number
- CN105906101A CN105906101A CN201610405981.7A CN201610405981A CN105906101A CN 105906101 A CN105906101 A CN 105906101A CN 201610405981 A CN201610405981 A CN 201610405981A CN 105906101 A CN105906101 A CN 105906101A
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- Prior art keywords
- liquid
- regenerated
- waste
- regeneration
- ion exchange
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- 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
- C02F1/445—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by forward osmosis
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention belongs to the technical field of water treatment and particularly relates to a device and method for emission reduction and recycling of ion exchange regenerated waste water. The device comprises a regenerated waste water conveying device used for conveying raw liquid and a thick regenerated liquid conveying device used for conveying driving liquid, and the raw liquid and the driving liquid are coupled together through a forward osmosis membrane assembly. The method includes the steps that the regenerated waste water serves as the forward osmosis raw liquid, the thick regenerated liquid serves as the forward osmosis driving liquid, the regenerated waste water and the thick regenerated liquid are coupled together through the forward osmosis membrane assembly, and water on the regenerated waste water side with low permeation pressure permeates to the thick regenerated liquid side with high permeation pressure on the basis of different permeation pressures; the regenerated waste water is continuously concentrated and the thick regenerated liquid is continuously diluted till the permeation pressures on the two sides are equal, and the diluted regenerated waste water serves as the regenerated liquid for ion exchange. The method reduces the emission amount of the regenerated waste water, saves clean water and reduces regeneration cost.
Description
Technical field
The invention belongs to water-treatment technology field, specifically, relate to a kind of ion exchange regenerant waste liquid and reduce discharging
And the device and method recycled.
Background technology
The major function of ion melded system is the hardness in removal water, heavy metal ion, is widely used in
Water treatment field.The operation of melded system needs to consume substantial amounts of regenerant salt, clear water, produces a large amount of simultaneously
Regeneration liquid waste.
Existing melded system specifically include that regenerated liquid dissolving tank, regeneration flow container, regeneration pump, soften tank and
Regenerated liquid pool.Ginseng prior art ion exchange regenerant process schematic shown in Fig. 1, regenerant salt is with clear
Water is compounded into dense regenerative brine at regeneration liquid pool, is transported to regenerate flow container by water pump, during regeneration, soft
Changing tank regeneration water intaking valve to open, middle row opens, and regenerates pump startup, by regenerating the jet mixing of pump discharge
Device proportionally sucks dense regeneration saline solution, and dense regeneration saline solution is mixed into by jet mixer and clear water
Dilute regenerant salt liquid, dilute regeneration saline solution enters and softens tank, contacts with the resin lost efficacy so that fault tree
Fat is reproduced, and is passed through clear water and displaces regeneration liquid waste after having regenerated, and arranges outside regeneration liquid waste.This process needs
Consume substantial amounts of clear water, produce substantial amounts of regeneration liquid waste, and regeneration cost is high.
Summary of the invention
It is an object of the invention to provide the device that a kind of ion exchange regenerant waste liquid reduces discharging and recycles
And method, to solve the problems referred to above.
The embodiment provides the device that a kind of ion exchange regenerant waste liquid reduces discharging and recycles,
Including for carry stock solution regeneration liquid waste conveyer device and for feed drive liquid dense regenerated liquid carry
Device, regeneration liquid waste conveyer device includes that stock solution pond, dense regenerated liquid conveyer device include driving liquid pool；Former
Liquid and driving liquid are coupled by forward osmosis membrane assembly.
Further, regeneration liquid waste conveyer device also includes the raw liquor pump being connected with stock solution pond, and dense regenerated liquid is defeated
Send the driving liquid pump that device also includes and drives liquid pool to be connected.
Further, the liquid feeding end in stock solution pond connects ion exchange pot, and liquid outlet connects forward osmosis membrane assembly,
Forward osmosis membrane assembly is discharged by pipeline after being concentrated by regeneration liquid waste；The liquid feeding end driving liquid pool is used for inputting
Regenerant salt, liquid outlet connects forward osmosis membrane assembly, and forward osmosis membrane assembly passes through after being diluted by dense regenerated liquid again
Raw flow container is connected with ion exchange pot.
Embodiments of the invention additionally provide the side that a kind of ion exchange regenerant waste liquid reduces discharging and recycles
Method, the method includes: using regeneration liquid waste as just permeating stock solution, dense regenerated liquid as positive osmotic drive liquid,
Regeneration liquid waste and dense regenerated liquid are coupled by forward osmosis membrane assembly, difference based on osmotic pressure,
The water of the regeneration liquid waste side that osmotic pressure is relatively low by forward osmosis membrane assembly penetrate into osmotic pressure higher dense again
Raw liquid side, regeneration liquid waste is constantly concentrated, and dense regenerated liquid is constantly diluted, until the infiltration of both sides
Press equal till, the regeneration liquid waste that is diluted is used as the regenerated liquid of ion exchange.
Compared with prior art the invention has the beneficial effects as follows: decrease regenerated by forward osmosis membrane assembly
Liquid discharge capacity, has saved clear water, reduces regeneration cost.
Accompanying drawing explanation
Fig. 1 is prior art ion exchange regenerant process schematic；
Fig. 2 is the structural frames of the device that the present invention a kind of ion exchange regenerant waste liquid reduces discharging and recycles
Figure.
Detailed description of the invention
The present invention is described in detail for each embodiment shown in below in conjunction with the accompanying drawings, but it should explanation
It is, these embodiments not limitation of the present invention that those of ordinary skill in the art implement according to these
Equivalent transformation in mode institute work energy, method or structure or replacement, belong to the guarantor of the present invention
Within the scope of protecting.
Shown in ginseng Fig. 2, the knot of the device that the present invention a kind of ion exchange regenerant waste liquid reduces discharging and recycles
Structure block diagram.
Present embodiments provide the device that a kind of ion exchange regenerant waste liquid reduces discharging and recycles, including using
Regeneration liquid waste conveyer device in conveying stock solution and the dense regenerated liquid conveyer device for feed drive liquid, then
Raw waste liquid conveyer device includes that stock solution pond 2, dense regenerated liquid conveyer device include driving liquid pool 3；Stock solution and
Liquid is driven to be coupled by forward osmosis membrane assembly 1.
This device is mainly used in the process of ion exchange regenerant waste liquid, it is also possible to be not suitable for directly as various
Connect the waste water using embrane method or full-boiled process to concentrate.COD content is higher, thermo-responsive, easy fouling various
Industrial wastewater can adopt this method concentration decrement, is particularly suited for the place of ion exchange regenerant waste liquid
Reason.This device decreases regeneration liquid waste discharge capacity by forward osmosis membrane assembly, has saved clear water, reduces
Regeneration cost.
In the present embodiment, regeneration liquid waste conveyer device also includes the raw liquor pump being connected with stock solution pond 2, dense
Regenerated liquid conveyer device also includes and the driving liquid pump driving liquid pool 3 to be connected.
In the present embodiment, the liquid feeding end in stock solution pond 2 connects ion exchange pot 5, and liquid outlet connection is just oozed
Permeable membrane assembly 1, after regeneration liquid waste is concentrated by forward osmosis membrane assembly 1, (dense regeneration liquid waste) is arranged by pipeline
Go out；The liquid feeding end driving liquid pool 3 is used for inputting regenerant salt, and liquid outlet connects forward osmosis membrane assembly 1, just
Permeable membrane element 1 dense regenerated liquid is diluted after (dilute regenerated liquid) by regeneration flow container 4 and ion exchange pot
5 connect.
This device utilizes regeneration liquid waste to be just to permeate stock solution, and dense regenerated liquid is positive osmotic drive liquid, regenerated
Liquid and dense regenerated liquid are coupled by forward osmosis membrane (FO) assembly, owing to the osmotic pressure of regeneration liquid waste is remote
Much smaller than the osmotic pressure of regeneration dope, under the driving of permeable pressure head, the source, water source in dilute regeneration liquid waste is not
Disconnected penetrates in dense regenerated liquid by film, and dilute regeneration liquid waste also makes dense regeneration while being concentrated
Liquid is constantly diluted.
The present embodiment additionally provides a kind of method that ion exchange regenerant waste liquid reduces discharging and recycles, the party
Method includes: using regeneration liquid waste as just permeating stock solution, and dense regenerated liquid, will regeneration as positive osmotic drive liquid
Waste liquid and dense regenerated liquid are coupled by forward osmosis membrane assembly (FO), difference based on osmotic pressure,
The water of the regeneration liquid waste side that osmotic pressure is relatively low by forward osmosis membrane assembly penetrate into osmotic pressure higher dense again
Raw liquid side, regeneration liquid waste is constantly concentrated, and dense regenerated liquid is constantly diluted, until the infiltration of both sides
Press equal till, the regeneration liquid waste that is diluted is used as the regenerated liquid of ion exchange, regenerated liquid regenerated from
New regeneration liquid waste is produced again after sub-exchange resin.The method is used for dilute by extracting the water in regeneration liquid waste
Release regenerative agent, thus reach the dual purpose that waste liquid reduces discharging and saves clear water.
The technique effect of the present invention is further illustrated below by instantiation.
Certain chemical industrial park waste water, wastewater flow rate 1250t/h, use melded system to remove hardness ions, use
The sodium form resin of 14 set diameter 3.0m softens tank, and 12 is standby with 2, specified treating capacity 125t/h of single set.
Using single regeneration situation (see Fig. 1) before the method: tap water consumes 25t, regenerant salt consumes 1.5t,
Regeneration liquid waste discharge 50t.
Using single regeneration situation (see Fig. 2) after the method: tap water consumes 0t, regenerant salt consumes 1.5t,
Regeneration liquid waste discharge 25t.
By relative analysis, using the method to make few 1 times of the water depletion of melded system, waste liquid discharge capacity reduces
0.5 times, effects of energy saving and emission reduction highly significant.
The a series of detailed description of those listed above is only for the feasibility embodiment of the present invention
Illustrate, they also are not used to limit the scope of the invention, all without departing from skill of the present invention essence
Equivalent implementations or change that god is made should be included within the scope of the present invention.
It is obvious to a person skilled in the art that the invention is not restricted to the thin of above-mentioned one exemplary embodiment
Joint, and without departing from the spirit or essential characteristics of the present invention, it is possible to other concrete shape
Formula realizes the present invention.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary,
And be nonrestrictive, the scope of the present invention is limited by claims rather than described above, because of
This is intended to include at this all changes fallen in the implication of equivalency and scope of claim
In bright.
Claims (4)
1. the device that an ion exchange regenerant waste liquid reduces discharging and recycles, it is characterised in that include
For carrying the regeneration liquid waste conveyer device of stock solution and for the dense regenerated liquid conveyer device of feed drive liquid,
Described regeneration liquid waste conveyer device includes that stock solution pond, described dense regenerated liquid conveyer device include driving liquid pool；
Described stock solution and described driving liquid are coupled by forward osmosis membrane assembly.
The dress that a kind of ion exchange regenerant waste liquid the most according to claim 1 reduces discharging and recycles
Put, it is characterised in that described regeneration liquid waste conveyer device also includes the raw liquor pump being connected with described stock solution pond,
Described dense regenerated liquid conveyer device also includes the driving liquid pump being connected with described driving liquid pool.
The dress that a kind of ion exchange regenerant waste liquid the most according to claim 1 reduces discharging and recycles
Putting, it is characterised in that the liquid feeding end in described stock solution pond connects ion exchange pot, liquid outlet connection is described just
Permeable membrane element, described forward osmosis membrane assembly is discharged by pipeline after being concentrated by described regeneration liquid waste；Described
The liquid feeding end driving liquid pool is used for inputting regenerant salt, and liquid outlet connects described forward osmosis membrane assembly, described just
Permeable membrane element is connected with described ion exchange pot by regeneration flow container after being diluted by described dense regenerated liquid.
4. the method that an ion exchange regenerant waste liquid reduces discharging and recycles, it is characterised in that including:
Using regeneration liquid waste as just permeating stock solution, dense regenerated liquid is as positive osmotic drive liquid, by regeneration liquid waste and dense
Regenerated liquid is coupled by forward osmosis membrane assembly, difference based on osmotic pressure, and osmotic pressure is relatively low again
The water of raw waste liquid side penetrates into, by described forward osmosis membrane assembly, the dense regenerated liquid side that osmotic pressure is higher, described
Regeneration liquid waste is constantly concentrated, and described dense regenerated liquid is constantly diluted, until the osmotic pressure phase of both sides
Till Deng, the regeneration liquid waste being diluted is used as the regenerated liquid of ion exchange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610405981.7A CN105906101A (en) | 2016-06-10 | 2016-06-10 | Device and method for emission reduction and recycling of ion exchange regenerated waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610405981.7A CN105906101A (en) | 2016-06-10 | 2016-06-10 | Device and method for emission reduction and recycling of ion exchange regenerated waste water |
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| CN105906101A true CN105906101A (en) | 2016-08-31 |
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| CN201610405981.7A Pending CN105906101A (en) | 2016-06-10 | 2016-06-10 | Device and method for emission reduction and recycling of ion exchange regenerated waste water |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745776A (en) * | 2012-07-03 | 2012-10-24 | 上海中科高等研究院 | Method and apparatus for treatment of concentrated reverse osmosis drainage through coupled forward osmosis and reverse osmosis |
| CN104591457A (en) * | 2013-11-01 | 2015-05-06 | 中国石油化工股份有限公司 | Forward osmosis coupled membrane distillation wastewater treatment apparatus and method thereof |
| CN204509027U (en) * | 2015-02-15 | 2015-07-29 | 北京沃特尔水技术股份有限公司 | A kind of Halite water desalination system based on tubular membrane |
| CN205803174U (en) * | 2016-06-10 | 2016-12-14 | 北京纬纶华业环保科技股份有限公司 | The device that a kind of ion exchange regenerant waste liquid reduces discharging and recycles |
-
2016
- 2016-06-10 CN CN201610405981.7A patent/CN105906101A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745776A (en) * | 2012-07-03 | 2012-10-24 | 上海中科高等研究院 | Method and apparatus for treatment of concentrated reverse osmosis drainage through coupled forward osmosis and reverse osmosis |
| CN104591457A (en) * | 2013-11-01 | 2015-05-06 | 中国石油化工股份有限公司 | Forward osmosis coupled membrane distillation wastewater treatment apparatus and method thereof |
| CN204509027U (en) * | 2015-02-15 | 2015-07-29 | 北京沃特尔水技术股份有限公司 | A kind of Halite water desalination system based on tubular membrane |
| CN205803174U (en) * | 2016-06-10 | 2016-12-14 | 北京纬纶华业环保科技股份有限公司 | The device that a kind of ion exchange regenerant waste liquid reduces discharging and recycles |
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Application publication date: 20160831 |