CN104310667A - Device for repairing heavy metal cadmium in underground water - Google Patents
Device for repairing heavy metal cadmium in underground water Download PDFInfo
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- CN104310667A CN104310667A CN201410529793.6A CN201410529793A CN104310667A CN 104310667 A CN104310667 A CN 104310667A CN 201410529793 A CN201410529793 A CN 201410529793A CN 104310667 A CN104310667 A CN 104310667A
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- underground water
- cadmium
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- heavy metal
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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
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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
- 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
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
- C02F2001/425—Treatment of water, waste water, or sewage by ion-exchange using cation exchangers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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)
- Water Treatment By Electricity Or Magnetism (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
The invention relates to a device for repairing heavy metal cadmium in underground water. The device comprises a water inlet (1), a stirrer (2), a water channel (3), a water retaining baffle plate (4), a water channel (5) and a semi-permeable membrane (6), a water channel (9), a cation exchange resin (10), a water outlet (11), an ion exchange region (12), a settling zone (13), a concentration zone (13) and a micro-electrolytic zone (15), wherein underground water pumped by a water pump enters into the settling zone (13) from the water inlet (1); after the underground water is stirred, part of cadmium is separated from a water body and enters into the concentration zone (14) along with underground water (3); under the effect of the water retaining baffle plate and the semi-permeable membrane, part of cadmium is concentrated is separated from the underground water body and then enters into the micro-electrolytic zone (15) to electrolyze the underground water so as to further treat cadmium in water. Then the underground water is introduced to the ion exchange region (12) and the detected concentration range of cadmium in underground water is 0.0108-0.011mg/L. The concentration range of cadmium in underground water detected by the device is 0.00108-0.011mg/L and the removal rate reaches up to over 90%.
Description
Technical field
The present invention relates to a kind of method of repairing heavy metal cadmium in underground water, belong to water treatment field.
Background technology
Underground water is the important component part of nature water cycle, with mankind's activity and survive closely bound up.Along with the development of producing, the problem of underground water heavy metal contamination is day by day serious, has become one of the most urgent problem of environmental pollution that current mankind faces.From the viewpoint of toxicity and the harm to organism, heavy metal cadmium has following features: as long as there is micro-concentrations to produce toxic effect in natural water body.Microorganism generally can not degrade them, and therefore its impact is difficult to eliminate at short notice.Under normal circumstances, give suddenly once be polluted by it, As time goes on, heavy metal cadmium can be transferred in underground water gradually, along with the flowing of underground water is spread gradually, thus causes underground water severe contamination.Because the physics chemical action process of underground water and its heavy metal pollutants is very complicated, it is often very hidden and slow that it pollutes process, both be not easy to find early, be difficult to again administer within a short period of time and prove effective, therefore the Pollution abatement of underground environment is more more complicated and difficult than ground surface environment, thus also requires higher to recovery technique.
The treatment technology that the underground water that heavy metal is polluted under normal circumstances adopts has physics (physisorphtion) physico-chemical processes (separation by liquid membrane method, By Bubble-floating Method By Bubble-floating Method, chemical flocculation settling process), chemical method barium salt process, reduction precipitation method (ion exchange method), electrochemical process (electrolytic process, electroosmose process) and biological treatment.The harmless treatment (removing toxic substances of stocking and storing method, chemical method, microbial method removing toxic substances, microwave method removing toxic substances) of the removing toxic substances of dry detoxified, wet reducing, cadmium slag is mainly used during cadmium Slag treatment.Electromotion repairing technique, bacterium and organism reduction, chemical immobilization/stabilizing method, chemical cleaning method, electric repairing method, biological restoration have mainly been used in the reparation of cadmium pollution soil.Have the treatment process of cadmium: oxyhydroxide or sulphide precipitation, absorption method, ion exchange method, oxidation reduction process, Fe forms body method, membrane separation process and biochemical process etc., for high density or cadmium wastewater concentrated after ion-exchange, there are electrolysis and evaporation absorption method.But some common defects are exactly that processing technological flow is loaded down with trivial details, long processing period, and processing cost is high, lower to the repair rate of cadmium.
Summary of the invention
The present invention is directed to that traditional restorative procedure cycle is long, the slow and remediation efficiency of taking effect is low etc., and problem provides that a kind of repairing efficiency is short, instant effect and the device of heavy metal cadmium in the high reparation underground water of repair rate.
To achieve the above object, the concrete structure of this device is:
Comprise water-in (1), agitator (2), excessively aquaporin (3), water retaining separater (4), cross aquaporin (5), semipermeable partition (6), copper (7), zinc (8), excessively aquaporin (8), excessively aquaporin (9), Zeo-karb (10), water outlet (11) ion-exchange area (12) settling region (13) enrichment region (14) light electrolysis district (15); The described underground water via water pump extracting, by water-in (1) water access to plant, first enters settling region (13), stirs and precipitate, leave cadmium in part underground water through agitator (1); Underground water enters enrichment region (14) through aquaporin (3) subsequently, water proof baffle plate (4) and infiltration semi-permeable membranes (6) in enrichment region, and water is passed through from semi-permeable membranes, and water proof baffle plate then stops lower part cadmium; Underground water enters into through aquaporin (9) the light electrolysis district (15) synthesized by copper Zinc material and carries out micro-electrolysis reaction subsequently, last under ion-exchange area (12) effect at Zeo-karb, carry out ion-exchange, to reach the object thoroughly removing the heavy metal cadmium in underground water again.
Agitator (2) is provided with in described settling region (3), after adding alkaline matter in containing the underground water of cadmium, through stirring, cadmium precipitation in underground water.
Water retaining separater (4) and semi-permeable membranes (5) is provided with in described enrichment region (14), the water retaining separater of underground water through gradually raising, due to water residence time difference in each baffle plate, part water stops, another part passes through semi-permeable membranes, part cadmium in water is filtered down, is concentrated.
Described light electrolysis district (15) inwall is copper, and outer wall is zinc system, forms larger light electrolysis district, and underground water passes through electrolysis zone, part cadmium generation micro-electrolysis reaction in water.
Described ion-exchange area (12) is built with filler hydrogen type cation exchange resin (10), and when underground water passes through, in water, cadmium generation ion exchange reaction, thoroughly removes cadmium.
Principle of work of the present invention: water is introduced into settling region (13) stirring makes cadmium in underground water be separated and precipitate.The infiltration semi-permeable membranes (6) of water proof baffle plate (4) in enrichment region (14) again, semi-permeable membranes makes water pass through, baffle other impurity such as concentrated cadmium.Underground water enters into through aquaporin (9) the light electrolysis district (15) synthesized by copper Zinc material and carries out micro-electrolysis reaction subsequently, finally carry out ion-exchange through ion-exchange area (12) again, to reach the heavy metal cadmium thoroughly removed in underground water.
Application method of the present invention:
(1) by the geological prospecting of underground water, polluted underground water source upstream and downstream is determined;
(2) again by underground water water quality detection, heavy metal cadmium point-source distribution figure in Groundwater is determined;
(3) contrast heavy metal cadmium point-source distribution figure in Groundwater, find heavily contaminated region, and beat a bite well in seriously polluted area, underground water source upstream, well depth is gone directly upstream underground water source contact surface;
(4) laying same a bite well apart from well 200 ~ 500m catchment, upstream, well depth is gone directly downstream underground water source contact surface;
(5) from the well of upstream, extract underground water out in the heavy metal cadmium prosthetic device of ground with water pump, after prosthetic device process, directly pass in the well of downstream, meanwhile, pour into the river after purification, until downstream water well irrigation is full.
Described heavy metal cadmium prosthetic device is divided into 4th district, and a district is settling region (13), 2nd district are enrichment region (14), 3rd district are light electrolysis district (15), 4th district are ion-exchange area (12).
A described settling region, district (13) is a taper, and inside is provided with an agitator (2), and the cone end is throw out.
Have a semi-permeable membranes and row's water proof baffle plate (4) in two described enrichment regions, district (14), but semi-permeable membranes water molecules freely passes through under the effect of infiltration, after described water proof baffle plate, plate is than front plate hight 2-5cm.
Three described light electrolysis districts of district (15) are made up of copper, zinc alloy material, its compartment inside is metallic copper (7), metallic copper serving zinc (8), has a space outside copper zinc alloy, for crossing aquaporin I (5), (9).
Four described ion-exchange area, district (12) interior filling male ion-exchange resins (10).
Underground water enters settling region (13) through water pump extracting by water inlet (1), and Xiang Shuizhong adds alkaline matter, stirs, precipitation; Underground water enters enrichment region (14) through aquaporin subsequently, under the effect of water proof baffle plate (4) and semipermeable partition (6), cadmium concentrating and separating in water, enter light electrolysis district (15) through aquaporin subsequently and carry out electrolytic reaction, ion-exchange area (12) is entered again through aquaporin, there is ion exchange reaction with Zeo-karb (10), recharge into other source of clean water finally by water outlet (11).
The significant advantage that the present invention has is: (1), first by stirring precipitation, being removed by impurities in water, then to concentrate, and makes the solute of different substances in water and solvent separately; (2), by light electrolysis remove some metal ions, reduce water hardness further, finally relatively clean underground water, again by ion-exchange, removes the residual cadmium of part in water.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in further detail that Fig. 1 is structural representation of the present invention.
Wherein, (1) water inlet; (2) agitator; (3) aquaporin is crossed; (4) water retaining separater; (5) aquaporin is crossed; (6) semi-permeable membranes; (7) copper; (8) zinc; (9) aquaporin is crossed; (10) Zeo-karb; (11) water outlet; (12) ion-exchange area; (13) settling region; (14) enrichment region; (15) light electrolysis district.
Specific embodiments
(1) by the geological prospecting of underground water, polluted underground water source upstream and downstream is determined;
(2) again by underground water water quality detection, heavy metal cadmium point-source distribution figure in Groundwater is determined;
(3) contrast heavy metal cadmium point-source distribution figure in Groundwater, find heavily contaminated region, and beat a bite well in seriously polluted area, underground water source upstream, well depth is gone directly upstream underground water source contact surface;
(4) laying same a bite well apart from well 200 ~ 500m catchment, upstream, well depth is gone directly downstream underground water source contact surface;
(5) from the well of upstream, extract underground water out in the heavy metal cadmium prosthetic device of ground with water pump, after prosthetic device process, directly pass in the well of downstream, meanwhile, pour into the river after purification, until downstream water well irrigation is full.
Described heavy metal cadmium prosthetic device is divided into 4th district, and a district is settling region (13), 2nd district are enrichment region (14), 3rd district are light electrolysis district (15), 4th district are ion-exchange area (12).
A described settling region, district (13) is a taper, and inside is provided with an agitator (2), and the cone end is throw out.
Have a semi-permeable membranes and row's water proof baffle plate (4) in two described enrichment regions, district (14), but semi-permeable membranes water molecules freely passes through under the effect of infiltration, after described water proof baffle plate, plate is than front plate hight 2-5cm.
Three described light electrolysis districts of district (15) are made up of copper, zinc alloy material, its compartment inside is metallic copper (7), metallic copper serving zinc (8), has a space outside copper zinc alloy, for crossing aquaporin I (5), (9).
Four described ion-exchange area, district (12) interior filling male ion-exchange resins (10).
Underground water enters settling region (13) through water pump extracting by water inlet (1), and Xiang Shuizhong adds alkaline matter, stirs, precipitation; Underground water enters enrichment region (14) through aquaporin subsequently, under the effect of water proof baffle plate (4) and semipermeable partition (6), cadmium concentrating and separating in water, enter light electrolysis district (15) through aquaporin subsequently and carry out electrolytic reaction, ion-exchange area (12) is entered again through aquaporin, there is ion exchange reaction with Zeo-karb (10), recharge into other source of clean water finally by water outlet (11).
Example 1
To middle and lower reach of Yangtze River local ground watering extracting, first pass into settling region (13), agitator stirs (2), rotating speed is 60r/min, precipitation, enrichment region (14) is entered through aquaporin (3) after precipitation, water proof baffle plate (4) is spaced apart 10cm, part underground water is by semipermeable partition (6), light electrolysis district (15) is entered through aquaporin, enter ion-exchange area (12) by crossing aquaporin (5) after underground water electrolysis subsequently, Zeo-karb (10) loading level is 30g/L.Finally, the underground water processed is discharged through water outlet (11), and treatment cycle completes, and before recording groundwater treatment, cadmium concentration content is 0.0108mg/L, and after process, cadmium concentration is 0.00120mg/L, and the present invention is 88.5% to cadmium clearance in underground water.
Example 2
To middle and lower reach of Yangtze River local ground watering extracting, first pass into settling region (13), agitator stirs (2), rotating speed is 120r/min, precipitation, enrichment region (14) is entered through aquaporin (3) after precipitation, water proof baffle plate (4) is spaced apart 15cm, part underground water is by semipermeable partition (6), light electrolysis district (15) is entered through aquaporin, enter ion-exchange area (12) by crossing aquaporin (5) after underground water electrolysis subsequently, Zeo-karb (10) loading level is 35/L.Finally, the underground water processed is discharged through water outlet (11), and before treatment cycle completes and records groundwater treatment, cadmium concentration content is 0.0109mg/L, and after process, cadmium concentration is 0.00119mg/L, the present invention is 89% to cadmium clearance in underground water.
Example 3
To middle and lower reach of Yangtze River local ground watering extracting, first pass into settling region (13), agitator stirs (2), rotating speed is 180r/min, precipitation, enrichment region (14) is entered through aquaporin (3) after precipitation, water proof baffle plate (4) is spaced apart 15cm, part underground water is by semipermeable partition (6), light electrolysis district (15) is entered through aquaporin, enter ion-exchange area (12) by crossing aquaporin (5) after underground water electrolysis subsequently, Zeo-karb (10) loading level is 40g/L.Finally, the underground water processed is discharged through water outlet (11), and treatment cycle completes, and before recording groundwater treatment, arsenic concentration content is 0.011mg/L, and after process, arsenic concentration is 0.0011mg/L, and the present invention is 90% to cadmium clearance in underground water.
Claims (5)
1. repair a device for heavy metal cadmium in underground water, it is characterized in that: comprise water-in (1), agitator (2), excessively aquaporin (3), water retaining separater (4), cross aquaporin (5), semipermeable partition (6), copper (7), zinc (8), excessively aquaporin (8), excessively aquaporin (9), Zeo-karb (10), water outlet (11) ion-exchange area (12) settling region (13) enrichment region (14) light electrolysis district (15); The described underground water via water pump extracting, by water-in (1) water access to plant, first enters settling region (13), stirs and precipitate, leave cadmium in part underground water through agitator (1); Underground water enters enrichment region (14) through aquaporin (3) subsequently, water proof baffle plate (4) and infiltration semi-permeable membranes (6) in enrichment region, and water is passed through from semi-permeable membranes, and water proof baffle plate then stops lower part cadmium; Underground water enters into through aquaporin (9) the light electrolysis district (15) synthesized by copper Zinc material and carries out micro-electrolysis reaction subsequently, last under ion-exchange area (12) effect at Zeo-karb, carry out ion-exchange, to reach the object thoroughly removing the heavy metal cadmium in underground water again.
2. a kind of device repairing heavy metal cadmium in underground water according to claim 1, it is characterized in that: in described settling region (3), be provided with agitator (2), after adding alkaline matter in containing the underground water of cadmium, through stirring, cadmium precipitation in underground water.
3. a kind of device repairing heavy metal cadmium in underground water according to claim 1, it is characterized in that: in described enrichment region (14), be provided with water retaining separater (4) and semi-permeable membranes (5), the water retaining separater of underground water through gradually raising, due to water residence time difference in each baffle plate, part water stops, another part, by semi-permeable membranes, makes part cadmium in water be filtered down, is concentrated.
4. a kind of device repairing heavy metal cadmium in underground water according to claim 1, it is characterized in that: described light electrolysis district (15) inwall is copper, and outer wall is zinc system, forms larger light electrolysis district, underground water passes through electrolysis zone, part cadmium generation micro-electrolysis reaction in water.
5. a kind of device repairing heavy metal cadmium in underground water according to claim 1, it is characterized in that: described ion-exchange area (12) are built with filler hydrogen type cation exchange resin (10), when underground water passes through, in water, cadmium generation ion exchange reaction, thoroughly removes cadmium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410529793.6A CN104310667B (en) | 2014-10-09 | 2014-10-09 | A kind of device of repairing heavy metal cadmium in underground water |
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| CN201410529793.6A CN104310667B (en) | 2014-10-09 | 2014-10-09 | A kind of device of repairing heavy metal cadmium in underground water |
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| CN104310667A true CN104310667A (en) | 2015-01-28 |
| CN104310667B CN104310667B (en) | 2016-05-11 |
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Cited By (3)
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| CN108117218A (en) * | 2018-02-07 | 2018-06-05 | 韶关鹏瑞环保科技有限公司 | A kind of comprehensive reutilization system of copper-containing etching waste solution |
| CN110158541A (en) * | 2019-06-03 | 2019-08-23 | 中国电建集团华东勘测设计研究院有限公司 | The double-deck geomembrane anti-seepage discharge structure, construction method and library basin antiseepage discharge structure |
| CN113814266A (en) * | 2021-09-13 | 2021-12-21 | 生态环境部华南环境科学研究所 | Reclaimed aluminum pile point soil pollution risk management and control method based on vertical barrier |
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| CN110158541A (en) * | 2019-06-03 | 2019-08-23 | 中国电建集团华东勘测设计研究院有限公司 | The double-deck geomembrane anti-seepage discharge structure, construction method and library basin antiseepage discharge structure |
| CN113814266A (en) * | 2021-09-13 | 2021-12-21 | 生态环境部华南环境科学研究所 | Reclaimed aluminum pile point soil pollution risk management and control method based on vertical barrier |
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| CN104310667B (en) | 2016-05-11 |
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