CN102689945A - Device for treating alkaliferous waste water through nanofiltration - Google Patents
Device for treating alkaliferous waste water through nanofiltration Download PDFInfo
- Publication number
- CN102689945A CN102689945A CN2011100806599A CN201110080659A CN102689945A CN 102689945 A CN102689945 A CN 102689945A CN 2011100806599 A CN2011100806599 A CN 2011100806599A CN 201110080659 A CN201110080659 A CN 201110080659A CN 102689945 A CN102689945 A CN 102689945A
- Authority
- CN
- China
- Prior art keywords
- water
- nanofiltration
- waste water
- pool
- backflow pool
- 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
Images
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a device for treating alkaliferous waste water through nanofiltration and relates to the field of waste water treatment. The device comprises a water storage tank, wherein a pump is connected with a pretreatment pool; the pretreatment pool is connected with a backflow pool; a valve is arranged between the pretreatment pool and the backflow pool; the backflow pool is connected with the pump through the valve and is connected to a nanofiltration device; a drainage port of the nanofiltration device is connected with a pure water tank; concentrated liquid outlets are respectively connected with the backflow pool through the valve; the nanofiltration device is formed in a way that an upper cover with a pressure gauge and a liquid inlet is connected with a nanofiltration tank body through a flange; a water distributor with a water distribution hole is arranged at a lower end of the upper cover; a nanofiltration film is formed on the water distribution hole; the other end of the nanofiltration film is connected to a water collection hole of a water collector at the bottom of the tank body; the water collection hole is connected with an outlet at the bottom end of the tank body; and a water outlet is also arranged on the upper end of the tank body. With the adoption of the device, the environment pollution to alkaliferous waste water in the industrial production is solved, the alkali in the waste water is recovered, and the phenomena that the cost is increased and the resources are wasted because a large amount of sulfuric acid or hydrochloric acid needs to be consumed when alkaliferous waste water is treated by neutralizational process can be avoided.
Description
Technical field
The present invention relates to field of waste water treatment, relate in particular to a kind of nanofiltration processing and contain the alkali waste water device.
Background technology
At present, in industries such as paper-making industry, petrochemical compleies, all producing a large amount of alkali waste waters that contains, be not only a kind of pollution to environment, and be a kind of waste every day, but it is very inconvenient to contain the processing of alkali waste water, and effect can not be satisfactory.The producer that has like the alkali decrement waste water and the mercerizing waste water of printing and dyeing mill adopts evaporation concentration method to reclaim alkali, effect is not very good, handles still alkalescence of back discharge water; This method can't resolve the root problem that contains alkali waste water, simultaneously, does very inconvenient; So the producer that has does not reclaim, just carry out neutralizing treatment, when middle neutralisation is handled alkaline waste water with acid; Need to consume a large amount of sulfuric acid or hydrochloric acid, the further biochemical treatment of neutralization back waste water ability, such treatment process big said producer is at present all adopting; They lose valuable alkali resource in vain, also will drop into a lot of acid, bring working cost to increase to wastewater treatment; Ceng Ziyuan slatterns again, and the water quality after the processing is also very undesirable.All do not have effectively to handle regardless of the alkali waste water that contains that contains alkali waste water or other industry that is dyeing at present; And can recycle alkali; Alkali in the waste water all can not thoroughly reclaim; The waste water Chinese style alkalescence of getting rid of, it can be the discharging that exceeds standard that the alkaline waste water pH value surpasses 9.0, at present a lot of producers all do not contain the alkali waste water worries for there being good method to handle.
Summary of the invention
Technical problem to be solved by this invention is: 1, effectively handle the alkali in the waste water, make eliminating water can reach 3 types of water quality standards, the 2 middle alkali with waste water concentrate purifies, and reaches the purpose of recycling.The present invention provides a kind of nanofiltration to handle method and the isolated plant that contains alkali waste water for this reason.
The objective of the invention is to realize through following technical scheme: the present invention has designed a kind of isolated plant.The device that contains alkali waste water is handled in a kind of nanofiltration, comprises tank, links with pump and pretreatment pool; Pretreatment pool connects backflow pool; And be provided with valve between pretreatment pool and the backflow pool, backflow pool is connected to nanofiltration device from being connected with pump through valve; The water port of nanofiltration device is connected with the pure water pond, and the dope outlet connects backflow pool respectively through valve.Its special character is that described nanofiltration device is by the loam cake that has tensimeter and fluid inlet; Be connected with the nanofiltration tank body through flange; Be provided with the water distributor of water distributing pore in the loam cake lower end, on the portion water hole, nf membrane be installed, the nf membrane the other end is linked on the gully-hole of water collector of tank base; Gully-hole is connected with the outlet of tank body bottom, also is provided with a water outlet in the upper end of tank body.
For further realizing goal of the invention of the present invention, the preferred version of technique scheme is:
The nf membrane of holding back 40D that above-mentioned nanofiltration device adopts, WP are at 0.5-0.9mPa, and filter type adopts cross flow filter.
Above-mentioned nanofiltration device WP is at 0.7mPa.
Above-mentioned nf membrane is the tubular fibre formula.
The present invention compared with prior art; Have following outstanding substantive distinguishing features and obvious improvement, concrete manifestation in the following areas: 1, flow process is simple, and whole process engineering of the present invention has only pre-treatment, advanced treatment and recycling several steps; Clear process is simple.2, treatment effect is good, in this technological process, has adopted the mode of nanofiltration cross-flow, has utilized the characteristics of nf membrane, effectively concentrates alkali in the waste water of having purified, and can satisfy the needs of the recycling of alkali, can reach 3 types of water quality standards especially and get rid of water.3, expense is few, and economic benefit is high, and technology of the present invention has reduced the mode of acid-base neutralisation, mainly be the characteristic of utilizing nf membrane, and the mode of cross-flow can effectively be cleared up the pollutent on the nf membrane, improves the work-ing life and the life cycle of film.
Description of drawings
The device that contains alkali waste water is handled in a kind of nanofiltration of the present invention, is provided by following accompanying drawing:
Fig. 1 handles the process flow sheet of the method that contains alkali waste water for nanofiltration;
Fig. 2 is the nanofiltration device structural representation.
Embodiment:
Below in conjunction with accompanying drawing, further the device explanation that contains alkali waste water is handled in a kind of nanofiltration of the present invention.
The technology of the method that contains alkali waste water is handled in a kind of nanofiltration, and (referring to Fig. 1, Fig. 2), its technical process does; Waste water gets into tank 1,2, links with pump 8 and pretreatment pool 3, and pretreatment pool 3 connects backflow pool 4,5; And pretreatment pool 3 and backflow pool 4, be provided with valve 10,11 between 5, backflow pool 4,5 is connected with pump 9 through valve 12,13 separately, is connected to nanofiltration device 6; The water port of nanofiltration device 6 is connected with pure water pond 7, and the dope outlet connects backflow pool 4,5 respectively through valve 14,15.When normal operation was, tank 2 and backflow pool 5 were as standby pool.
Below in conjunction with actually operating, be example to handle paper-making industry waste water, explain this technical process.At first contain alkali waste water and flow into tank 1, through preliminary filtration, remove big foreign material at tank 1; Big particle pumps into pretreatment pool 3 with pump 8 with the waste water in the tank 1, and further the alkali waste water that contains of sedimentation processing flows into backflow pool 4 in pretreatment pool 3; After filling with backflow pool 4, close the valve 10 of pretreatment pool 3 and backflow pool 4 alkali, pump 9 is the nanofiltration device 6 of 0.5mPa with the waste water PIP in the backflow pool 4 simultaneously; Waste water is got into by nanofiltration device loam cake 6-7 fluid inlet 6-1; Fluid inlet is provided with tensimeter, and waste water is behind water distributor 6-2, after the entering aperture is the tubular fibre formula nf membrane 6-3 of 40D; Spissated waste water is compiled by the water collector 6-4 that is arranged on tank body 6-8 bottom, and water is after filtering discharged by water port 6-5.Dope after nanofiltration device 6 cross-flows are handled flows into pure water pond 7 by the water that liquid outlet 6-6 discharges, and liquid concentrator is back to backflow pool 4.Waste water circulation in the backflow pool 4 is flowed between nanofiltration device 6 and backflow pool 4 repeatedly, when the content of the alkali in the backflow pool 4 reaches 35%, can recycle alkali in the backflow pool 4.
Below in conjunction with actually operating, be example to handle paper-making industry waste water, explain this technical process.At first contain alkali waste water and flow into tank 1, through preliminary filtration, remove big foreign material at tank 1; Big particle pumps into pretreatment pool 3 with pump 8 with the waste water in the tank 1, and further the alkali waste water that contains of sedimentation processing flows into backflow pool 4 in pretreatment pool 3; After filling with backflow pool 4, close the valve 10 of pretreatment pool 3 and backflow pool 4 alkali, pump 9 is the nanofiltration device 6 of 0.9mPa with the waste water PIP in the backflow pool 4 simultaneously; Waste water is got into by nanofiltration device loam cake 6-7 fluid inlet 6-1; Fluid inlet is provided with tensimeter, and waste water is behind water distributor 6-2, after the entering aperture is the tubular fibre formula nf membrane 6-3 of 40D; Spissated waste water is compiled by the water collector 6-4 that is arranged on tank body 6-8 bottom, and water is after filtering discharged by water port 6-5.Dope after nanofiltration device 6 cross-flows are handled flows into pure water pond 7 by the water that liquid outlet 6-6 discharges, and liquid concentrator is back to backflow pool 4.Waste water circulation in the backflow pool 4 is flowed between nanofiltration device 6 and backflow pool 4 repeatedly, when the content of the alkali in the backflow pool 4 reaches 35%, can recycle alkali in the backflow pool 4.
Embodiment 3
Below in conjunction with actually operating, be example to handle paper-making industry waste water, explain this technical process.At first contain alkali waste water and flow into tank 1, through preliminary filtration, remove big foreign material at tank 1; Big particle pumps into pretreatment pool 3 with pump 8 with the waste water in the tank 1, and further the alkali waste water that contains of sedimentation processing flows into backflow pool 4 in pretreatment pool 3; After filling with backflow pool 4, close the valve 10 of pretreatment pool 3 and backflow pool 4 alkali, pump 9 is the nanofiltration device 6 of 0.7mPa with the waste water PIP in the backflow pool 4 simultaneously; Waste water is got into by nanofiltration device loam cake 6-7 fluid inlet 6-1; Fluid inlet is provided with tensimeter, and waste water is behind water distributor 6-2, after the entering aperture is the tubular fibre formula nf membrane 6-3 of 40D; Spissated waste water is compiled by the water collector 6-4 that is arranged on tank body 6-8 bottom, and water is after filtering discharged by water port 6-5.Dope after nanofiltration device 6 cross-flows are handled flows into pure water pond 7 by the water that liquid outlet 6-6 discharges, and liquid concentrator is back to backflow pool 4.Waste water circulation in the backflow pool 4 is flowed between nanofiltration device 6 and backflow pool 4 repeatedly, when the content of the alkali in the backflow pool 4 reaches 35%, can recycle alkali in the backflow pool 4.
Claims (4)
1. the isolated plant that contains alkali waste water is handled in a nanofiltration, comprises tank, links with pump and pretreatment pool; Pretreatment pool connects backflow pool; And be provided with valve between pretreatment pool and the backflow pool, backflow pool is connected to nanofiltration device from being connected with pump through valve; The water port of nanofiltration device is connected with the pure water pond, and the dope outlet connects backflow pool respectively through valve.It is characterized in that described nanofiltration device is by the loam cake that has tensimeter and fluid inlet; Be connected with the nanofiltration tank body through flange; Be provided with the water distributor of water distributing pore in the loam cake lower end, on the portion water hole, nf membrane be installed, the nf membrane the other end is linked on the gully-hole of water collector of tank base; Gully-hole is connected with the outlet of tank body bottom, also is provided with a water outlet in the upper end of tank body.
2. the isolated plant that contains alkali waste water is handled in nanofiltration according to claim 1, and the nf membrane of holding back 40D that its characteristic adopts in described nanofiltration device, WP are at 0.5-0.9mPa, and filter type adopts cross flow filter.
3. the isolated plant that contains alkali waste water is handled in nanofiltration according to claim 2, its characteristic in described nanofiltration device WP at 0.7mPa.
4. the isolated plant that contains alkali waste water is handled in nanofiltration according to claim 2, and its characteristic is the tubular fibre formula in described nf membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100806599A CN102689945A (en) | 2011-03-24 | 2011-03-24 | Device for treating alkaliferous waste water through nanofiltration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100806599A CN102689945A (en) | 2011-03-24 | 2011-03-24 | Device for treating alkaliferous waste water through nanofiltration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102689945A true CN102689945A (en) | 2012-09-26 |
Family
ID=46855704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100806599A Pending CN102689945A (en) | 2011-03-24 | 2011-03-24 | Device for treating alkaliferous waste water through nanofiltration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102689945A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108301489A (en) * | 2018-02-09 | 2018-07-20 | 刘诗军 | Pipeline system and control method thereof |
| CN112624363A (en) * | 2020-11-22 | 2021-04-09 | 山东奥美环境股份有限公司 | Alkali recovery process and recovery device for alkali-containing wastewater |
-
2011
- 2011-03-24 CN CN2011100806599A patent/CN102689945A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108301489A (en) * | 2018-02-09 | 2018-07-20 | 刘诗军 | Pipeline system and control method thereof |
| CN108301489B (en) * | 2018-02-09 | 2024-03-26 | 苏州洁畅环保科技有限公司 | Pipeline system and control method thereof |
| CN112624363A (en) * | 2020-11-22 | 2021-04-09 | 山东奥美环境股份有限公司 | Alkali recovery process and recovery device for alkali-containing wastewater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102515377B (en) | Integrated membrane electroplated nickel-contained rinsing water zero-discharging process and special equipment thereof | |
| CN205803266U (en) | Leather industry production comprehensive wastewater treatment system | |
| CN102295373A (en) | Papermaking wastewater cycling and utilizing apparatus and method based on electrochemical and electrodialysis technologies | |
| CN201304324Y (en) | Reverse osmosis concentrated water recycling device | |
| CN101798768A (en) | Waste paper regeneration environmental protection device and method | |
| CN100400427C (en) | A method for the treatment and utilization of acidic wastewater containing heavy metals | |
| CN102153224A (en) | Treatment technology for industrial sewage from sodium carboxymethylcellulose | |
| CN205269420U (en) | Automatic back flush scraping tubular membrane filter equipment | |
| CN104086011B (en) | Be applicable to the technique of zero discharge of viscose fibre industry acid station waste water | |
| CN102689945A (en) | Device for treating alkaliferous waste water through nanofiltration | |
| CN217516799U (en) | Treatment device for papermaking industrial wastewater | |
| CN202080990U (en) | Refinery waste water advanced-treatment system | |
| CN102689944A (en) | Nanofiltration water treatment method for alkaliferous waste water | |
| CN215906041U (en) | Leachate treatment system | |
| CN205188014U (en) | Wet flue gas desulfurization effluent treatment plant of thermal power plant | |
| CN214060100U (en) | Novel reverse osmosis of high rate of recovery device | |
| CN201195068Y (en) | Water-saving device for xylose manufacturing process | |
| CN206783478U (en) | New high-salt wastewater processing unit | |
| CN205892940U (en) | Sewage settlement treatment system | |
| CN206298462U (en) | A kind of trade effluent recovery device | |
| CN113526715A (en) | Desulfurization waste water zero discharge system | |
| CN219752085U (en) | Intermittent type formula ink machine washs waste water recovery processing system | |
| CN103787455A (en) | Method and special-purpose apparatus for nanofiltration treatment of alkali-containing waste water | |
| CN212425666U (en) | Desulfurization waste water zero discharge system | |
| CN205382054U (en) | Treatment facility of wood -based plate production waste |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120926 |