CN2908473Y - Device for removing and recoverying sexavlence chromium in waste water - Google Patents
Device for removing and recoverying sexavlence chromium in waste water Download PDFInfo
- Publication number
- CN2908473Y CN2908473Y CN 200620104672 CN200620104672U CN2908473Y CN 2908473 Y CN2908473 Y CN 2908473Y CN 200620104672 CN200620104672 CN 200620104672 CN 200620104672 U CN200620104672 U CN 200620104672U CN 2908473 Y CN2908473 Y CN 2908473Y
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- electrodialysis
- chamber outlet
- chamber inlet
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- dialysis
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Abstract
The utility model discloses a device of removing and recycling the hexavalent chromium in the wastewater. The electric deionization device is provided with a thin chamber inlet of the electric deionization, a thin chamber outlet of the electric deionization, a thick chamber inlet of the electric deionization, a thick chamber outlet of the electric deionization; the electro-dialysis device is provided with a thin chamber outlet of the electro-dialysis, a thin chamber outlet of the electro-dialysis, a thick chamber inlet of the electro-dialysis, a thick chamber outlet of the electro-dialysis; the thick chamber outlet of the electric deionization has two paths; one path is connected with the thin chamber outlet of the electro-dialysis through the first valve; the other path is connected with the thick chamber inlet of the electro-dialysis through the second valve and the flow-meter; the thin chamber outlet of the electro-dialysis is connected with the input of the middle liquid storage tank; the input of the middle liquid storage tank is connected with the thick chamber inlet of the electric deionization through a pump. When the utility model is used to remove and recycle the Cr (VI) in the wastewater, not only is the efficiency high, but the operation is also convenient; no chemicals are required. The utility model is suitable for the wastewater of washing the chrome-plate and the treatment of the industrial wastewater whose quality is similar to that of the wastewater with Cr (VI).
Description
Technical field
The utility model relates to waste disposal plant, relates in particular to a kind of removal and reclaims sexavalent chrome device in the waste water.
Background technology
Sexavalent chrome (Cr (VI)) often is present in the trade effluents such as electroplating wastewater, tanning waste water.The toxicity of Cr (VI) is very big, and easily accumulation in vivo, so all there is strict demand countries in the world to the discharging that contains Cr (VI) waste water.The main method that present industrial processing contains Cr (VI) waste water has: ion exchange method, reduction-chemical precipitation method, absorption method, electroosmose process and reverse osmosis method etc.The efficient of ion exchange method and absorption method removal Cr (VI) is higher, but regeneration is complicated with reclaimer operation, and needs chemical agent consumption.The equipment of reduction-chemical precipitation method is comparatively easy, but needs chemical agent consumption equally, and the difficult recovery of chromium, easily produces secondary pollution.Reclaim Cr (VI) though electroosmose process and reverse osmosis method can concentrate, it is lower to remove efficient, and the Cr in the water outlet (VI) content is difficult to reach emission standard usually.
Summary of the invention
The purpose of this utility model is to provide a kind of removal and reclaims sexavalent chrome device in the waste water, make to handle that Cr (VI) content reaches emission standard in the water of back, and Cr (VI) obtains to reclaim with the form of high chromium concentration acid solution.
The technical scheme that its technical problem that solves the utility model adopts is: comprise electric deionizer, two valves, electrodialysis unit, under meter, middle liquid-storing box and pump.Electric deionizer has the light chamber inlet of electrodeionization, electrodeionization light chamber outlet, the dense chamber inlet of electrodeionization and electrodeionization dense chamber outlet; Electrodialysis unit has the light chamber inlet of electrodialysis, electrodialysis light chamber outlet, the dense chamber inlet of electrodialysis and electrodialysis dense chamber outlet; Electrodeionization dense chamber outlet is divided into two the tunnel, one the tunnel connects the light chamber inlet of electrodialysis through first valve, another road second valve, under meter connect the dense chamber inlet of electrodialysis, the input aperture of liquid-storing box in the middle of electrodialysis light chamber outlet connects, and the delivery port of middle liquid-storing box connects the dense chamber inlet of electrodeionization through pump.
The beneficial effect that the utlity model has is:
Adopt the efficient Cr (VI) that removes in the waste water of electrodeionization (EDI) device, and Cr (VI) is tentatively concentrated in the dense chamber of EDI device, obtain rare chromic acid; Adopt electrodialysis unit that the rare chromic acid of above-mentioned gained is further concentrated, be back to production thereby reach.Adopt the utility model to remove and reclaim Cr (VI) in the waste water, efficient height not only, and also easy and simple to handle, do not need chemical agent again.The utility model is applicable to that chromium plating rinsing waste water and other water quality similarly contain the processing of Cr (VI) trade effluent.
Description of drawings
Accompanying drawing is a structural principle synoptic diagram of the present utility model.
Among the figure: 1.EDI device, the light chamber inlet of 2.EDI (waterwater entrance), 3.EDI light chamber outlet (handling the back water out), 4.EDI dense chamber inlet, 5.EDI dense chamber outlet, 6. valve, 7. valve, the 8. light chamber inlet of electrodialysis, 9. electrodialysis light chamber outlet, 10. electrodialysis unit, 11. the dense chamber inlet of electrodialysis, the dense chamber outlets of 12. electrodialysis (dense chromic acid outlet), 13. under meters, 14. middle liquid-storing box, 15. pumps.
Embodiment
As shown in drawings, the utility model comprises 1, two valve of electric deionizer 6,7, electrodialysis unit 10, under meter 13, middle liquid-storing box 14 and pump 15.Electric deionizer 1 has the light chamber inlet 2 of electrodeionization, electrodeionization light chamber outlet 3, the dense chamber inlet 4 of electrodeionization and electrodeionization dense chamber outlet 5; Electrodialysis unit 10 has the light chamber inlet 8 of electrodialysis, electrodialysis light chamber outlet 9, the dense chamber inlet 11 of electrodialysis and electrodialysis dense chamber outlet 12; Electrodeionization dense chamber outlet 5 is divided into two the tunnel, one the tunnel connects the light chamber inlet 8 of electrodialysis through first valve 6, another road second valve 7, under meter 13 connect the dense chamber inlet 11 of electrodialysis, the input aperture of liquid-storing box 14 in the middle of electrodialysis light chamber outlet 9 connects, the delivery port of middle liquid-storing box 14 connects the dense chamber inlet 4 of electrodeionization through pump 15.
Shown in accompanying drawing, contain Cr (VI) waste water after the light chamber inlet of EDI (waterwater entrance) 2 enters EDI device 1 through what suspended substance was removed in pre-treatment, Cr (VI) ion at first is adsorbed in the anionite-exchange resin in the light chamber.Under electric field action, Cr (VI) ion carries out electromigration fast in anionite-exchange resin, and the cavity block that sees through the EDI device migrates to dense chamber from light chamber, and waste water is purified the back and discharges from light chamber outlet (handling the back water out) 3, is back to and produces or directly discharging.Because the electromigration speed of Cr (VI) ion in ion exchange resin is very fast, so the efficient of EDI removal Cr (VI) is very high.After the processing, obtain preliminary spissated dilute chromic acid solution and discharge from EDI dense chamber outlet 5, be divided into two-way then, the one tunnel flows to the light chamber inlet 8 of electrodialysis after valve 6 regulation and control; Another road is regulated and control through valve 7, and flows to the dense chamber inlet 11 of electrodialysis (dense chromic acid outlet) after under meter 13 is measured flows.Under electric field action, Cr (VI) migrates to dense chamber from the light chamber of electrodialysis unit, makes Cr (VI) density loss in the light chamber, and the Cr in the dense chamber (VI) concentration obtains to raise.The chromic acid solution that concentrates the back acquisition is discharged from electrodialysis dense chamber outlet 12, is back to production; Rare chromic acid is then discharged from light chamber 9, and liquid-storing box 14 in the middle of flowing into is earlier carried by pump 15 then, flows to the dense chamber inlet 4 of EDI.EDI device 1 of the present utility model, electrodialysis unit 10 and under meter 13 etc. all can be commercially available.
Embodiment: Cr (VI) concentration is that the waste water of 50mg/L is after system handles shown in Figure 1, the light chamber outlet of EDI 3Cr (VI) concentration is reduced to below the 0.5mg/L, the dense chamber outlet of EDI 5Cr (VI) concentration rises to 1-2g/L, and the dense chamber outlet 12Cr of electrodialysis (VI) rises to 50-80g/L.
Claims (1)
- A removal with reclaim sexavalent chrome device in the waste water, it is characterized in that: comprise electric deionizer (1), two valves (6,7), electrodialysis unit (10), under meter (13), middle liquid-storing box (14) and pump (15); Electric deionizer (1) has the light chamber inlet of electrodeionization (2), the light chamber outlet of electrodeionization (3), the dense chamber inlet of electrodeionization (4) and the dense chamber outlet of electrodeionization (5); Electrodialysis unit (10) has the light chamber inlet of electrodialysis (8), the light chamber outlet of electrodialysis (9), the dense chamber inlet of electrodialysis (11) and the dense chamber outlet of electrodialysis (12); The dense chamber outlet of electrodeionization (5) is divided into two the tunnel, one the tunnel connects the light chamber inlet of electrodialysis (8) through first valve (6), another road second valve (7), under meter (13) connect the dense chamber inlet of electrodialysis (11), the input aperture of liquid-storing box (14) in the middle of the light chamber outlet of electrodialysis (9) connects, the delivery port of middle liquid-storing box (14) connects the dense chamber inlet of electrodeionization (4) through pump (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620104672 CN2908473Y (en) | 2006-06-14 | 2006-06-14 | Device for removing and recoverying sexavlence chromium in waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620104672 CN2908473Y (en) | 2006-06-14 | 2006-06-14 | Device for removing and recoverying sexavlence chromium in waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2908473Y true CN2908473Y (en) | 2007-06-06 |
Family
ID=38127684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620104672 Expired - Lifetime CN2908473Y (en) | 2006-06-14 | 2006-06-14 | Device for removing and recoverying sexavlence chromium in waste water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2908473Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381370C (en) * | 2006-06-14 | 2008-04-16 | 浙江大学 | System for removing and retrieving hexavalent chrome from wastewater |
| CN107445363A (en) * | 2017-09-18 | 2017-12-08 | 库特勒环保科技（苏州）有限公司 | A kind of alkali etching line washing section waste water reclamation system and method |
| CN107760868A (en) * | 2017-11-06 | 2018-03-06 | 中南大学 | A kind of method that vanadium, chromium and sodium carbonate salt are separated and recovered in the liquid from Leaching of Vanadium from Vanadium slag |
-
2006
- 2006-06-14 CN CN 200620104672 patent/CN2908473Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381370C (en) * | 2006-06-14 | 2008-04-16 | 浙江大学 | System for removing and retrieving hexavalent chrome from wastewater |
| CN107445363A (en) * | 2017-09-18 | 2017-12-08 | 库特勒环保科技（苏州）有限公司 | A kind of alkali etching line washing section waste water reclamation system and method |
| CN107445363B (en) * | 2017-09-18 | 2023-09-15 | 库特勒自动化系统(苏州)有限公司 | Alkaline etching line washing section wastewater regeneration method |
| CN107760868A (en) * | 2017-11-06 | 2018-03-06 | 中南大学 | A kind of method that vanadium, chromium and sodium carbonate salt are separated and recovered in the liquid from Leaching of Vanadium from Vanadium slag |
| CN107760868B (en) * | 2017-11-06 | 2019-01-22 | 中南大学 | A method of separating and recovering vanadium, chromium and sodium carbonate salt from Leaching of Vanadium from Vanadium slag liquid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080416 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |