CN201971689U - Device for removing and recovering heavy metal by crystallization - Google Patents
Device for removing and recovering heavy metal by crystallization Download PDFInfo
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- CN201971689U CN201971689U CN2011200158483U CN201120015848U CN201971689U CN 201971689 U CN201971689 U CN 201971689U CN 2011200158483 U CN2011200158483 U CN 2011200158483U CN 201120015848 U CN201120015848 U CN 201120015848U CN 201971689 U CN201971689 U CN 201971689U
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Abstract
The utility model discloses a device for removing and recovering heavy metal by crystallization. The device is a closed container which is divided into a crystallization zone and a precipitation zone that are communicated with each other from bottom to top; an induced crystallization carrier is filled in the crystallization zone, the bottom of the crystallization zone is provided with a water distributer, the bottom of the container corresponding to the crystallization zone is provided with a backflow solution inlet, and both sides of the side wall of the container are provided with a heavy metal wastewater inlet and a precipitator inlet; the side wall of the container corresponding to the upper part of the crystallization zone is provided with a backflow solution outlet, and a solid-liquid separator and a microcrystal catcher are arranged in the precipitation zone; and a water outlet is arranged on the side wall of the container corresponding to the precipitation zone. The device has the advantages that the operation is simple, the management is easy, the heavy metal removing rate is high, and the 'harmless' and the 'recycle' of heavy metal pollutants can be synchronously realized.
Description
Technical field
The utility model belongs to the waste disposal plant technical field, especially relates to the device that heavy metal was removed and reclaimed in a kind of crystallization.
Background technology
The heavy metal contamination of China's water body becomes one of maximum water pollution problems of harm gradually, and the pollution rate of river,lake and reservior substrate is up to 80.1%.The Yellow River in 2003, Huaihe River, Song Hua River, the pollution level of the heavy metals exceeding standard section of ten large watersheds such as the Liaohe River is super V class.Heavy metal contamination not only has characteristics such as environmental hazard persistence, geochemistry cyclicity and ecological risk, and easily by biomagnification and biological amplification is arranged.Therefore natural water not only will cause serious harm to fishery and agricultural as suffering heavy metal contamination, also will produce serious threat to HUMAN HEALTH.
Both at home and abroad about the heavy metal containing wastewater treatment Study on Technology history of existing decades, obtained a large amount of achievements in research, various treatment process continue to bring out and develop, chemical precipitation method is as a kind of traditional heavy metal contaminants treatment technology, is widely used in the heavy metal containing wastewater treatment field because of it has advantage such as simple to operate, that processing speed is fast, resistance to overload shock is strong.But it also has following shortcoming: (1) floor space is big; (2) handle back heavy metal sewage sludge water content height, processing cost height; (3) heavy metal reclaims difficulty in the mud.
Summary of the invention
The purpose of this utility model is the deficiency that overcomes prior art, and the device that provides a kind of crystallization to remove and reclaim heavy metal has simple to operately, and has that high heavy metal is removed and the characteristics of the rate of recovery.
The device of heavy metal is removed and is reclaimed in a kind of crystallization in the utility model, it is characterized in that this device is a closed container, and this container is divided into crystallization reaction district and the settling region that is interconnected from top to bottom; Be filled with the induced crystallization carrier in the crystallization reaction district, the bottom is provided with water distributor, and the bottom of the container of crystallization reaction district correspondence is provided with the reflux solution inlet, and the container side wall both sides are provided with heavy metal wastewater thereby import and precipitation agent import; The container side wall of crystallization reaction district top correspondence is provided with the reflux solution outlet, is provided with solid-liquid separator, crystallite trap in the settling region; The container side wall of settling region correspondence is provided with water outlet.
Described apparatus main body is cylindrical, adopts synthetic glass, engineering plastics or stainless steel etc. to make.The crystallization reaction district and the diameter ratio of settling region be 0.2: 1-1: 1, volume ratio is 20: 1-2.0: 1, the aspect ratio 25 of whole device: 1-5: 1.Water distributor can be pipe porous, branch tubulose and a disc type water distributor; The waste water import and the precipitation agent import of reactor both sides can be provided with one or more.The seed diameter of filling the induced crystallization carrier in the crystallization reaction district is 0.05-0.5mm.
The crystallite trap is one deck or two-layer above round sheet wire netting or plastic wire in the described device settling region, grid diameter 0.05-0.5cm, and the diameter of every wire netting is 1 with the internal diameter ratio in crystallization reaction district: 1-0.4: 1.The solid-liquid separator main body is the triangle configuration, and the internal diameter ratio in solid-liquid separator base diameter and crystallization reaction district is 0.9: 1-0.5: 1.
The utility model is compared the beneficial effect that has with existing apparatus:
(1) device is divided into crystallization reaction district and settling region from bottom to top, and each modular construction compactness, function division be clear and definite, simple to operate, be easy to safeguard;
(2) the bottom of device both sides are provided with a plurality of waste water imports and medicament inlet, can adjust waste water import and medicament inlet quantity respectively according to heavy metal effect in the device operational process, degree of supersaturation when being convenient in the regulation device heavy metal ion crystalline deposit, impel heavy metal with heterogeneous nucleation mode crystalline deposit, improve removal efficiency of heavy metals;
(3) device is provided with the reaction soln backflow, sets different reflux ratios according to different heavy metal crystalline characteristics, makes the interior induced crystallization carrier of device be in the active fluidization state, whole device is difficult for stopping up, the crystallized product of carrier surface adheres to even compact, and purity is higher, is beneficial to recovery.
(4) the induced crystallization carrier dwindles the surface tension between induced crystallization carrier and the crystallization heavy metal precipitation thing greatly after the precipitation agent surface modification, helps improving heavy metal crystallization clearance;
(5) device settling region, top is provided with solid-liquid separator, is easy to the crystallization suspended substance in the solution in the separation and precipitation area;
(6) device settling region, top is provided with the crystallite trap, to not crystallization reaction district carrier surface growth two enter the settling region crystallite realize that secondary crystal captures, and further improves the crystallization clearance and the rate of recovery of heavy metal.
Description of drawings
Fig. 1 is the example structure synoptic diagram that the device of heavy metal was removed and reclaimed in a kind of crystallization of the present invention.
Embodiment
The crystallization removal of the utility model design and the device of recovery heavy metal reach embodiment in conjunction with the accompanying drawings and are described in detail as follows:
Heavy metal species in the utility model is removed and the retrieving arrangement structure, and as shown in Figure 1, this device is a closed container, is divided into the crystallization reaction district I and the settling region II that are interconnected from top to bottom.I two bottom sides in crystallization reaction district is distinguished one or more waste water import 1 and precipitation agent import 8 (for example showing 4 among the figure), and the bottom is provided with reflux solution inlet 11 and water distributor 9.I top, crystallization reaction district is provided with reflux solution outlet 2, fills induced crystallization carrier 7 in the crystallization reaction district I.Be provided with solid-liquid separator 5 and crystallite trap 6 in the settling region II; The sidewall of crystallization reaction district I is provided with water outlet 3, and the top is provided with top cover 4 and makes the device sealing.
Described apparatus main body is cylindrical, adopts synthetic glass, engineering plastics or stainless steel etc. to make.The diameter ratio of crystallization reaction district I and settling region II is 0.2: 1-1: 1, and volume ratio is 20: 1-2.0: 1, the aspect ratio 25 of whole device: 1-5: 1.
Filling induced crystallization carrier 7 in the crystallization reaction district I is quartz sand, rhombspar, haydite or heavy metallic salt crystalloid etc.; the carrier diameter is 0.05-0.5mm; consumption is 100-1000g/L, and the crystallization carrier surface adopts means enforcement surface modifications such as precipitation agent surface applied.The induced crystallization carrier dwindles the surface tension between induced crystallization carrier and the crystallization heavy metal precipitation thing greatly after the precipitation agent surface modification, can realize the fast and stable operation of this device.
Solid-liquid separator 5 can adopt synthetic glass, engineering plastics or stainless steel etc. to make, and main body is the triangle configuration, and the internal diameter ratio in solid-liquid separator base diameter and crystallization reaction district is 0.9: 1-0.5: 1, and solid-liquid separator 5 is fixed on the device top cover.
II crystallite trap 6 is one deck or two-layer above (for example show among the figure and be of five storeys) circular metal net or plastic wire in the device settling region, grid diameter 0.05-0.5cm, and the diameter of every wire netting is 1 with the internal diameter ratio in crystallization reaction district: 1-0.4: 1.The number of plies of required round sheet wire netting freely determines according to the heavy metal precipitation treatment effect.By crystallite trap 6 being set,, further improve the crystallization clearance and the rate of recovery of heavy metal to not entering the crystallite realization secondary crystal capture of settling region in crystallization reaction district carrier surface growth two at settling region II.Crystallite trap 6 is fixed on the device top cover, and according to the running condition of this device, the crystallite trap can be changed alternative at any time.
The principle of work of heavy metal crystallization removal of the present utility model and retrieving arrangement: heavy metal wastewater thereby import 1 and precipitation agent import 8 are water-ins of device, heavy metal ion in reaction zone I with the precipitation agent ionic reaction, the heavy metal precipitation crystal of generation is grown at the induced crystallization carrier surface.In the real reaction operating process, reflux solution outlet 2 and reflux solution import 11 link to each other the backflow of reaction soln and crystallization carrier fluidisation in the realization response process by volume pump.Device water outlet 3 is the outlet of whole device.
The maximum of this device be characterised in that following some: (1) crystallization reaction district two bottom sides is provided with a plurality of waste water imports and precipitation agent import, makes in the device local degree of supersaturation more even, helps improving heavy metal removing rate; (2) after the induced crystallization carrier is implemented surface modification, can realize the fast and stable operation of this device; (3) be provided with solid-liquid separator and crystallite trap in the device settling region, realize that the secondary of heavy metal precipitation crystallite in the solution captures, improve the heavy metal removing rate and the rate of recovery.
Embodiment:
The structure of present embodiment as shown in Figure 1, heavy metal crystallization removal and retrieving arrangement main body are cylindrical vessel, adopt synthetic glass to make.The diameter ratio of crystallization reaction district and settling region is 0.8: 1, and volume ratio is 15: 1, the aspect ratio of whole device 20: 1.Device comprises crystallization reaction district and settling region, and reaction zone inner bottom part both sides are respectively equipped with import of waste water and a precipitation agent import, and the bottom is provided with reflux solution inlet and one one pipe porous water distributor.Top, crystallization reaction district is provided with a reflux solution outlet, fills the induced crystallization carrier in the crystallization reaction district.Be provided with solid-liquid separator, crystallite trap and water outlet in the settling region.
Crystallization reaction zone device both sides are respectively equipped with 2 waste water imports and 2 precipitation agent imports.Filling rhombspar in the crystallization reaction district is the induced crystallization carrier, and the carrier diameter is 0.1mm, and consumption is 300g/L, and the crystallization carrier surface adopts Na
2S implements surface modification.Solid-liquid separator is the synthetic glass material, and main body is the triangle configuration, and the internal diameter ratio in solid-liquid separator base diameter and crystallization reaction district is 0.7: 1, and solid-liquid separator is fixed on the device top cover.The crystallite trap is 3 layers of round sheet wire netting or plastic wire in the device settling region, grid diameter 0.1cm, and the diameter of every wire netting is 0.6: 1 with the internal diameter ratio in crystallization reaction district.
In service at device, copper-containing wastewater and precipitation agent Na
2S enters reactor from heavy metal wastewater thereby import and precipitation agent import respectively, import links to each other with reflux solution with the reflux solution outlet by volume pump, the backflow of reaction soln and crystallization carrier fluidisation in the realization response process are handled the back water outlet and are flowed out whole device from water outlet.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (8)
1. the device of heavy metal is removed and is reclaimed in a crystallization, it is characterized in that this device is a closed container, and this container is divided into crystallization reaction district and the settling region that is interconnected from top to bottom.Be filled with the induced crystallization carrier in the crystallization reaction district, the bottom is provided with water distributor, and the bottom of the container of crystallization reaction district correspondence is provided with the reflux solution inlet, and the container side wall both sides are provided with heavy metal wastewater thereby import and precipitation agent import; The container side wall of crystallization reaction district top correspondence is provided with the reflux solution outlet, is provided with solid-liquid separator, crystallite trap in the settling region; The container side wall of settling region correspondence is provided with water outlet.
2. install according to claim 1, it is characterized in that described closed container is cylindrical.
3. install according to claim 1, it is characterized in that the diameter ratio of described crystallization reaction district and settling region is 0.2: 1-1: 1, volume ratio is 20: 1-2.0: 1, the aspect ratio 25 of whole device: 1-5: 1.
4. install according to claim 1, it is characterized in that, described water distributor is pipe porous, branch tubulose or a disc type water distributor.
5. install according to claim 1, it is characterized in that the waste water import and the precipitation agent import of described reactor both sides are provided with one or more.
6. install according to claim 1, it is characterized in that, the seed diameter of filling the induced crystallization carrier in the described crystallization reaction district is 0.05-0.5mm.
7. install according to claim 1, it is characterized in that, the crystallite trap is one deck or two-layer above round sheet wire netting or plastic wire in the described settling region, grid diameter 0.05-0.5cm, and the diameter of every wire netting is 1 with the internal diameter ratio in crystallization reaction district: 1-0.4: 1.
8. install according to claim 1, it is characterized in that described solid-liquid separator main body is the triangle configuration, the internal diameter ratio in solid-liquid separator base diameter and crystallization reaction district is 0.9: 1-0.5: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200158483U CN201971689U (en) | 2011-01-18 | 2011-01-18 | Device for removing and recovering heavy metal by crystallization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200158483U CN201971689U (en) | 2011-01-18 | 2011-01-18 | Device for removing and recovering heavy metal by crystallization |
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| CN201971689U true CN201971689U (en) | 2011-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200158483U Expired - Lifetime CN201971689U (en) | 2011-01-18 | 2011-01-18 | Device for removing and recovering heavy metal by crystallization |
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| CN (1) | CN201971689U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011426A (en) * | 2012-12-18 | 2013-04-03 | 新奥科技发展有限公司 | Industrial wastewater treatment device and treatment method |
| CN106044999A (en) * | 2016-07-08 | 2016-10-26 | 哈尔滨工业大学深圳研究生院 | Method for treating wastewater through Fenton combined technology |
| CN106115942A (en) * | 2016-07-22 | 2016-11-16 | 河北省电力建设调整试验所 | A kind of reverse osmosis concentrated water induction crystallization sofening treatment system |
| CN106746011A (en) * | 2016-12-30 | 2017-05-31 | 四川师范大学 | The processing method of heavy metal-containing waste water |
| CN107456931A (en) * | 2017-08-08 | 2017-12-12 | 刘晓吉 | A kind of device and method for generating unstable calcium carbonate mineral phase |
| CN109264892A (en) * | 2018-11-14 | 2019-01-25 | 天津市德信成环保科技有限公司 | Processing method containing heavy metal, the dangerous liquid wastes of toxic organic compound |
| CN111498966A (en) * | 2020-04-30 | 2020-08-07 | 青岛羚角化工技术有限责任公司 | Differential water distributor and application thereof in crystallization fluidized bed |
| CN112169825A (en) * | 2020-09-21 | 2021-01-05 | 河南省化工研究所有限责任公司 | Ion induction catalyst for industrial circulating water treatment and preparation method thereof |
| CN114956274A (en) * | 2022-06-13 | 2022-08-30 | 西安交通大学 | Integrated reactor for treating circulating sewage of power plant by electrochemical descaling-nuclear crystal granulation coupling process and removing method thereof |
-
2011
- 2011-01-18 CN CN2011200158483U patent/CN201971689U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011426A (en) * | 2012-12-18 | 2013-04-03 | 新奥科技发展有限公司 | Industrial wastewater treatment device and treatment method |
| CN106044999A (en) * | 2016-07-08 | 2016-10-26 | 哈尔滨工业大学深圳研究生院 | Method for treating wastewater through Fenton combined technology |
| CN106044999B (en) * | 2016-07-08 | 2019-08-06 | 哈尔滨工业大学深圳研究生院 | A kind of method of Fenton group technology processing waste water |
| CN106115942A (en) * | 2016-07-22 | 2016-11-16 | 河北省电力建设调整试验所 | A kind of reverse osmosis concentrated water induction crystallization sofening treatment system |
| CN106746011A (en) * | 2016-12-30 | 2017-05-31 | 四川师范大学 | The processing method of heavy metal-containing waste water |
| CN107456931A (en) * | 2017-08-08 | 2017-12-12 | 刘晓吉 | A kind of device and method for generating unstable calcium carbonate mineral phase |
| CN109264892A (en) * | 2018-11-14 | 2019-01-25 | 天津市德信成环保科技有限公司 | Processing method containing heavy metal, the dangerous liquid wastes of toxic organic compound |
| CN111498966A (en) * | 2020-04-30 | 2020-08-07 | 青岛羚角化工技术有限责任公司 | Differential water distributor and application thereof in crystallization fluidized bed |
| CN111498966B (en) * | 2020-04-30 | 2021-06-08 | 工大环境股份有限公司 | Differential water distributor and application thereof in crystallization fluidized bed |
| CN112169825A (en) * | 2020-09-21 | 2021-01-05 | 河南省化工研究所有限责任公司 | Ion induction catalyst for industrial circulating water treatment and preparation method thereof |
| CN114956274A (en) * | 2022-06-13 | 2022-08-30 | 西安交通大学 | Integrated reactor for treating circulating sewage of power plant by electrochemical descaling-nuclear crystal granulation coupling process and removing method thereof |
| CN114956274B (en) * | 2022-06-13 | 2023-07-25 | 西安交通大学 | Integrated reactor for treating power plant circulating sewage by electrochemical descaling-nuclear crystal granulation coupling process and removing method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20110914 |