CN204417562U - A kind of device reclaiming zinc and chromium in heavy metal sewage sludge - Google Patents
A kind of device reclaiming zinc and chromium in heavy metal sewage sludge Download PDFInfo
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- CN204417562U CN204417562U CN201420862982.0U CN201420862982U CN204417562U CN 204417562 U CN204417562 U CN 204417562U CN 201420862982 U CN201420862982 U CN 201420862982U CN 204417562 U CN204417562 U CN 204417562U
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The utility model provides a kind of device reclaiming zinc and chromium in heavy metal sewage sludge, comprises multilevel leaching system, acid-base neutralisation system, evaporation and crystallization system, electrolytic system and medicine system.Adopt in the utility model the device that proposes can zinc in successful separating beavy metal mud and chromium, achieve changing waste into resources, the rate of recovery of zinc and chromium be greater than 95% and 90% respectively; The product income obtained is greater than running cost, has actual application value.
Description
Technical field
The utility model belongs to municipal solid wastes disposal and resource utilization field, particularly a kind of device reclaiming zinc and chromium in heavy metal sewage sludge.
Background technology
Heavy metal sewage sludge is of a great variety.In China, the main source industry containing solid waste of heavy metal is attached most importance to the five large industries such as nonferrous metals ore selecting and purchasing, smelting, lead storage battery, leather and leather products, chemical feedstocks and goods thereof, and often belongs to Hazardous wastes.By 2007, leaded, mercury, pot, chromium, arsenic the Hazardous wastes generation listing " National Hazard refuse register " in was 1690.55 ten thousand tons; Five industries such as metal product industry, leather and leather products industry, non-ferrous metal metallurgy and rolling processing industry, chemical feedstocks and chemical product manufacturing and nonferrous metals ore selecting and purchasing industry account for 95.24% of whole industrial total release containing the quantity discharged of heavy metal waste.If the not treated just discharge of heavy metal sewage sludge, can cause the severe contamination of soil and water, heavy metal, by food chain enrichment layer by layer, produces chronic/cumulative toxicity, causes serious harm to human health and species diversity.
In a lot of industrial solid wastes, heavy metal content is relatively high, and the content of a lot of heavy metal has exceeded its grade in metallic ore.Heavy metal in heavy metal mud reclaims, and not only can realize changing waste into resources and utilize, can also reduce refuse toxicity, thus reduce disposal costs, be kill two birds with one stone.
The comprehensive utilization technique of heavy metal waste comprises dry method and the large class of wet method two, and just reclaims with regard to elemental chromium and zinc, or wet method is more.Hydrometallurgic recovery technology mainly comprises leaching and is separated.Modal wet recycling process has acidleach and ammonia leaching.The leaching yield of acidic leaching method is very high, but selectivity is not strong; Ammonia leaching process is comparatively strong to the selectivity of copper, nickel, cobalt, less to the recycle of other metal.Later separation method after leaching has extraction process and chemical precipitation method.Adopt suitable extraction separation method, the rate of recovery of metal target is very high, and the purity of the metallic salt product obtained is also very high; Extraction process is technique the most frequently used at present, but extraction process is complicated, and organic solvent consumption is large, and investment and the operation cost of extraction plant are higher, and the process of Discarded organic solvent is also a problem.
Summary of the invention
The utility model proposes a kind of device reclaiming zinc and chromium in heavy metal sewage sludge, zinc and chromium can be separated and realized purifying from mud.
Reclaim a device for zinc and chromium in heavy metal sewage sludge, it is characterized in that: comprise multilevel leaching system, acid-base neutralisation system, evaporation and crystallization system, electrolytic system and medicine system;
Described multilevel leaching system comprises pulper, No. 1 leaching flow container, No. 2 leaching flow containers, No. 3 leaching flow containers and No. 1 pressure filter, No. 1 leaching flow container and No. 2 leaching flow containers are bi-directionally connected with pulper respectively, the outlet of pulper is connected with the 3rd leaching can, the slurry outlet of pulper is connected with No. 1 pressure filter, and No. 1 filter press filtrate outlet is connected with the import of No. 2 leaching cans;
Described acid-base neutralisation system, comprise and connect No. 1 strainer, neutralization tank, No. 2 pressure filter and filtrate tanks successively, No. 1 strainer is connected with the 3rd leaching can;
Described evaporation and crystallization system comprises No. 2 strainers and evaporation and crystallization system, and feed liquor strainer is connected with filtrate tanks;
Described electrolytic system comprises dissolving vessel and electrolyzer, and dissolving tank is connected with No. 2 pressure filter;
Described medicine system comprises acid storage tank, alkali storage tank and leaching agent storage tank, and acid storage tank is connected with neutralization tank and dissolving vessel respectively, and alkali storage tank and leaching agent storage tank leach flow container with No. 2 respectively and be connected.
The beneficial effects of the utility model:
1. adopt in the utility model the device that proposes can zinc in successful separating beavy metal mud and chromium, achieve changing waste into resources, the rate of recovery of zinc and chromium be greater than 95% and 90% respectively; The product income obtained is greater than running cost, has actual application value;
2. filter residue remaining after leaching, as general refuse process, can greatly reduce disposal costs;
3. the leaching device in the utility model is multilevel leaching, achieves the sealing and circulating of medicament;
4. the electrolyzer in the utility model, the acid solution that electrolytic process produces is back to neutralizing well and utilizes; By the way, avoid the discharge of residual pharmacy to greatest extent, reduce reagent cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, put after not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of the device of zinc and chromium in recovery heavy metal sewage sludge of the present utility model.
In figure: 1. pulper; 2. No. 2 leaching flow containers; 3. No. 3 leaching flow containers; 4. No. 1 leaching flow container; 5. No. 1 pressure filter; 6. No. 1 strainer; 7. neutralization tank; 8. No. 2 pressure filter; 9. filtrate tanks; 10. No. 2 strainers; 11. evaporation and crystallization system; 12. dissolving vessels; 13. electrolyzers; 14. acid storage tanks; 15. leaching agent storage tanks; 16. alkali storage tanks.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art put obtained every other embodiment after not making creative work, all belong to the scope of protection of the invention.
Embodiment 1
As described in Figure 1, the present embodiment provides a kind of device reclaiming zinc and chromium in heavy metal sewage sludge, it is characterized in that: comprise multilevel leaching system, acid-base neutralisation system, evaporation and crystallization system, electrolytic system and medicine system;
Multilevel leaching system comprises No. 1,1, pulper leaching No. 4,2, flow container leaching No. 2,3, flow container leaching flow container and No. 1 pressure filter 5, No. 1 leaching flow container 4 and No. 2 leaching flow containers 2 are bi-directionally connected with pulper 1 respectively, the outlet of pulper 1 is connected with the 3rd leaching can, the slurry outlet of pulper 1 is connected with No. 1 pressure filter 5, and No. 1 pressure filter 5 filtrate outlet is connected with the import of No. 2 leaching cans;
Acid-base neutralisation system, comprises connection No. 1 strainer 6, neutralization tank 7, No. 2 pressure filter 8 and filtrate tanks 9, No. 1 strainer 6 successively and is connected with the 3rd leaching can;
Evaporation and crystallization system comprises No. 2 strainers 10 and evaporation and crystallization system 11, and feed liquor strainer is connected with filtrate tanks 9;
Electrolytic system comprises dissolving vessel 12 and electrolyzer 13, and dissolving tank is connected with No. 2 pressure filter;
Medicine system comprises acid storage tank 14, alkali storage tank 16 and leaching agent storage tank 15, and acid storage tank 14 is connected with neutralization tank 7 and dissolving vessel 12 respectively, and alkali storage tank 16 and leaching agent storage tank 15 leach flow container 2 with No. 2 respectively and be connected;
Wherein, the mass transport between stream oriented device is led to pump and is carried out.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (1)
1. reclaim a device for zinc and chromium in heavy metal sewage sludge, it is characterized in that: comprise multilevel leaching system, acid-base neutralisation system, evaporation and crystallization system, electrolytic system and medicine system;
Described multilevel leaching system comprises pulper, No. 1 leaching flow container, No. 2 leaching flow containers, No. 3 leaching flow containers and No. 1 pressure filter, No. 1 leaching flow container and No. 2 leaching flow containers are bi-directionally connected with pulper respectively, the outlet of pulper is connected with the 3rd leaching can, the slurry outlet of pulper is connected with No. 1 pressure filter, and No. 1 filter press filtrate outlet is connected with the import of No. 2 leaching cans;
Described acid-base neutralisation system, comprise and connect No. 1 strainer, neutralization tank, No. 2 pressure filter and filtrate tanks successively, No. 1 strainer is connected with the 3rd leaching can;
Described evaporation and crystallization system comprises No. 2 strainers and evaporation and crystallization system, and feed liquor strainer is connected with filtrate tanks;
Described electrolytic system comprises dissolving vessel and electrolyzer, and dissolving tank is connected with No. 2 pressure filter;
Described medicine system comprises acid storage tank, alkali storage tank and leaching agent storage tank, and acid storage tank is connected with neutralization tank and dissolving vessel respectively, and alkali storage tank and leaching agent storage tank leach flow container with No. 2 respectively and be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420862982.0U CN204417562U (en) | 2014-12-31 | 2014-12-31 | A kind of device reclaiming zinc and chromium in heavy metal sewage sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420862982.0U CN204417562U (en) | 2014-12-31 | 2014-12-31 | A kind of device reclaiming zinc and chromium in heavy metal sewage sludge |
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| CN204417562U true CN204417562U (en) | 2015-06-24 |
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| CN201420862982.0U Active CN204417562U (en) | 2014-12-31 | 2014-12-31 | A kind of device reclaiming zinc and chromium in heavy metal sewage sludge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104451166A (en) * | 2014-12-31 | 2015-03-25 | 北京清大国华环保科技有限公司 | Method and device for recovering zinc and chrome in heavy metal sludge |
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2014
- 2014-12-31 CN CN201420862982.0U patent/CN204417562U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104451166A (en) * | 2014-12-31 | 2015-03-25 | 北京清大国华环保科技有限公司 | Method and device for recovering zinc and chrome in heavy metal sludge |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100085 C building, Ka Wah building, No. 9, 3rd Street, Beijing, Haidian District, C404 Patentee after: BEIJING GO HIGHER ENVIRONMENT CO., LTD. Address before: 100085 C building, Ka Wah building, No. 9, 3rd Street, Beijing, Haidian District, C404 Patentee before: Beijing Qingda Guohua Environmental Protection Technology Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 100085 C404, Building C, Jiahua Building, 9 Shangdi Third Street, Haidian District, Beijing Patentee after: Tsingdahua Environment Group Co., Ltd. Address before: 100085 C404, Building C, Jiahua Building, 9 Shangdi Third Street, Haidian District, Beijing Patentee before: BEIJING GO HIGHER ENVIRONMENT CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |