CN104310667B - A kind of device of repairing heavy metal cadmium in underground water - Google Patents
A kind of device of repairing heavy metal cadmium in underground water Download PDFInfo
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- CN104310667B CN104310667B CN201410529793.6A CN201410529793A CN104310667B CN 104310667 B CN104310667 B CN 104310667B CN 201410529793 A CN201410529793 A CN 201410529793A CN 104310667 B CN104310667 B CN 104310667B
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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 present invention relates to a kind of device of repairing heavy metal cadmium in underground water, comprise water inlet (1), agitator (2), cross aquaporin (3), water retaining separater (4), cross aquaporin (5) semipermeable membrane (6), cross aquaporin (9), cationic ion-exchange resin (10), delivery port (11), ion-exchange area (12), settling zone (13) enrichment region (14), micro-electrolysis zone (15); The described underground water through water pump extracting enters settling zone (13) by water inlet (1), through stirring, part cadmium is separated with water body, underground water (3) enters enrichment region (14) subsequently, under the effect of water retaining separater and semipermeable membrane, part cadmium concentrates and separates with underground water water body, enters subsequently micro-electrolysis zone (15), underground water is carried out to electrolysis, further cadmium in water quality is processed. After pass into ion-exchange area (12), detect in underground water cadmium concentration scope at 0.0108mg/L-0.011mg/L, after this device is processed, detect that in underground water, cadmium concentration scope is at 0.00108mg/L-0.0011mg/L, clearance is up to more than 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 circulation, closely bound up with mankind's activity and existence. Along withThe development of producing, the problem of underground water heavy metal pollution is day by day serious, has become current mankind and has facedOne of urgent problem of environmental pollution. From toxicity and the harm aspect to organism, heavy metal cadmium has as followsFeature: as long as there is micro-concentrations can produce poisonous effect in natural water body. Microorganism generally can not be degraded it, therefore its impact is difficult to eliminate at short notice. Under normal circumstances, once give by it and pollute suddenly, along withThe passing of time, heavy metal cadmium can be transferred in underground water gradually, along with the diffusion gradually of flowing of underground water, fromAnd cause underground water severe contamination. Due to the physics chemical action process ten of underground water and its heavy metal pollutantsDivide complexity, its pollution process is often very hidden and slow, has both been not easy to find early, is difficult to again more in short-termInterior improvement proved effective, and therefore the pollution control of underground environment is more more complicated and difficult than ground surface environment, thereby to repairingRecovering technology is also had relatively high expectations.
The treatment technology under normal circumstances underground water of heavy metal pollution being adopted has physics (physisorphtion) physicsChemical method (emulsion liquid film partition method, By Bubble-floating Method By Bubble-floating Method, chemical flocculation sedimentation), chemical method barium salt process,Reduction precipitation method (ion-exchange), electrochemical process (electrolysis, electroosmose process) and biological treatment. Cadmium slagWhen processing, mainly use harmless treatment (stocking and storing method, the chemical method of the removing toxic substances of dry detoxified, wet reducing, cadmium slagRemoving toxic substances, microbial method removing toxic substances, microwave method removing toxic substances). The reparation of cadmium pollution soil has mainly been used electrodynamics and has been repaiiedBacterium and organic matter reduction, chemical immobilization/stabilizing method, chemical cleaning method, electric repairing method, biology again,Repairing method. Processing method to cadmium has: hydroxide or sulphide precipitation, absorption method, ion-exchange,Oxidation-reduction method, iron oxysome method, membrane separation process and biochemical process etc., for high concentration or after ion-exchangeConcentrated cadmium wastewater, has electrolysis and evaporation absorption method. But some common defects, are exactly treatment processFlow process 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 oneRepairing efficiency is short, the device of heavy metal cadmium in instant effect and the high reparation underground water of repair rate.
To achieve the above object, the concrete structure of this device is:
Comprise water inlet (1), agitator (2), cross aquaporin I (3), water retaining separater (4), cross aquaporinII (5), pellicle (6), copper (7), zinc (8), cross aquaporin III (9), cationic ion-exchange resin (10),Delivery port (11), ion-exchange area (12), settling zone (13), enrichment region (14), micro-electrolysis zone (15);The described underground water via water pump extracting, by water inlet (1) water access to plant, first enters settling zone (13), warpAgitator (1) stirs and precipitates, and leaves cadmium in part underground water; Underground water is through aquaporin I (3) subsequentlyEnter enrichment region (14), be provided with water proof baffle plate (4) and infiltration pellicle (6) in enrichment region, pellicle (6) arrangesIn water proof baffle plate (4) bottom, water is passed through from pellicle, water proof baffle plate stops lower part cadmium; SubsequentlyLower water enters into micro-electrolysis zone (15) of being synthesized by copper Zinc material through aquaporin II (5) and carries out micro-electrolysis reaction,Finally passing through aquaporin III (9) enters ion-exchange area (12) and enters under the effect of cationic ion-exchange resin againRow ion-exchange, to reach the object of the heavy metal cadmium in thorough removal underground water.
In described settling zone (3), be provided with agitator (2), in the underground water that contains cadmium, add after alkaline matter,Through stirring, cadmium precipitation in underground water.
In described enrichment region (14), be provided with water retaining separater (4) and pellicle (5), underground water is through gradually risingHigh water retaining separater, due to water time of staying difference in each baffle plate, a part of water stops, and another part passes throughPellicle, is filtered down part cadmium in water, is concentrated.
Described micro-electrolysis zone (15) inwall is copper, and outer wall is zinc system, forms larger micro-electrolysis zone, undergroundWater is by electrolysis zone, part cadmium generation micro-electrolysis reaction in water.
Hydroxide filler type cationic ion-exchange resin (10) is housed in described ion-exchange area (12), when underground water passes through,In water, cadmium generation ion-exchange reactions, thoroughly removes cadmium.
Operation principle of the present invention: water is introduced into settling zone (13) stirring makes cadmium in underground water separate and precipitate. Pass through againThe infiltration pellicle (6) of the interior water proof baffle plate of enrichment region (14) (4), pellicle passes through water, and baffle plate stops and concentratesOther impurity such as cadmium. Underground water enters into micro-electrolysis of being synthesized by copper Zinc material through aquaporin II (5) subsequentlyDistrict (15) carries out micro-electrolysis reaction, finally passes through aquaporin III (9) again and enters ion-exchange area (12) and carry outIon-exchange, to reach the heavy metal cadmium in thorough removal underground water.
Application process of the present invention:
(1), by the geological prospecting of underground water, determine polluted underground water source upstream and downstream;
(2) again by underground water water quality detection, determine heavy metal cadmium point-source distribution figure in Groundwater;
(3) heavy metal cadmium point-source distribution figure in contrast Groundwater, finds heavily contaminated region, and in underground water source upstreamA bite well is beaten in seriously polluted area, the through upstream of well depth underground water source contact-making surface;
(4) laying same a bite well apart from well 200～500m catchment, upstream, the through downstream of well depth underground water sourceContact-making surface;
(5) from the well of upstream, extract underground water out with water pump in the heavy metal cadmium prosthetic device of ground, through prosthetic device placeAfter reason, directly pass in the well of downstream, meanwhile, pour into the river after purifying, until downstream water well irrigation is completelyOnly.
Described heavy metal cadmium prosthetic device is divided into 4th district, a district be settling zone (13), 2nd district be enrichment region (14),Three Wei Wei electrolysis zone, districts (15), 4th district are ion-exchange area (12).
Settling zone, described Yi district (13) is a taper, and inside is provided with an agitator (2), and the cone end is sediment.
In described Er district enrichment region (14), have a pellicle and one row water proof baffle plate (4), infiltration effect secondBut permeable membrane hydrone freely passes through, after described water proof baffle plate, plate is than front plate hight 2-5cm.
Micro-electrolysis zone, described San district (15) is to be made up of copper, zinc alloy material, and its compartment inside is metallic copper (7),Metallic copper serving zinc (8), has a space outward at ormolu, for crossing aquaporin II (5), crossing aquaporin III (9).
The interior filling male ion-exchange resin in ion-exchange area, described Si district (12) (10).
Underground water enters settling zone (13) through water pump extracting by water inlet (1), and Xiang Shuizhong adds alkaline matter,Stir precipitation; Underground water enters enrichment region (14) through aquaporin I subsequently, water proof baffle plate (4) and halfUnder the effect of permeable membrane (6), cadmium concentrating and separating in water, enters micro-electrolysis zone (15) through aquaporin II subsequentlyCarry out cell reaction, then enter ion-exchange area (12) through aquaporin III, with cationic ion-exchange resin (10)There is ion-exchange reactions, recharge into other source of clean water finally by delivery port (11).
The significant advantage that the present invention has is: (1), first precipitate by stirring, by Impurity removal in water, then enterRow is concentrated, and the solute of different material in water and solvent are separated; (2), by micro-electrolysis remove some metals fromSon, further reduces hardness of water, and last relatively clean underground water, again by ion-exchange, is removed water middle partDivide residual cadmium.
Brief description of the drawings
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) cross aquaporin I; (4) water retaining separater; (5) cross waterPassage II; (6) pellicle; (7) copper; (8) zinc; (9) cross aquaporin III; (10) cation is handed overChange resin; (11) delivery port; (12) ion-exchange area; (13) settling zone; (14) enrichment region;(15) micro-electrolysis zone.
Specific embodiments
(1), by the geological prospecting of underground water, determine polluted underground water source upstream and downstream;
(2) again by underground water water quality detection, determine heavy metal cadmium point-source distribution figure in Groundwater;
(3) heavy metal cadmium point-source distribution figure in contrast Groundwater, finds heavily contaminated region, and in underground water source upstreamA bite well is beaten in seriously polluted area, the through upstream of well depth underground water source contact-making surface;
(4) laying same a bite well apart from well 200～500m catchment, upstream, the through downstream of well depth underground water sourceContact-making surface;
(5) from the well of upstream, extract underground water out with water pump in the heavy metal cadmium prosthetic device of ground, through prosthetic device placeAfter reason, directly pass in the well of downstream, meanwhile, pour into the river after purifying, until downstream water well irrigation is completelyOnly.
Described heavy metal cadmium prosthetic device is divided into 4th district, a district be settling zone (13), 2nd district be enrichment region (14),Three Wei Wei electrolysis zone, districts (15), 4th district are ion-exchange area (12).
Settling zone, described Yi district (13) is a taper, and inside is provided with an agitator (2), and the cone end is sediment.
In described Er district enrichment region (14), have a pellicle and one row water proof baffle plate (4), infiltration effect secondBut permeable membrane hydrone freely passes through, after described water proof baffle plate, plate is than front plate hight 2-5cm.
Micro-electrolysis zone, described San district (15) is to be made up of copper, zinc alloy material, and its compartment inside is metallic copper (7),Metallic copper serving zinc (8), has a space outward at ormolu, for crossing aquaporin II (5), crossing aquaporin III (9).
The interior filling male ion-exchange resin in ion-exchange area, described Si district (12) (10).
Underground water enters settling zone (13) through water pump extracting by water inlet (1), and Xiang Shuizhong adds alkaline matter,Stir precipitation; Underground water enters enrichment region (14) through aquaporin subsequently, at water proof baffle plate (4) with partly oozeUnder the effect of permeable membrane (6), cadmium concentrating and separating in water, enters micro-electrolysis zone (15) through aquaporin II subsequentlyCarry out cell reaction, then enter ion-exchange area (12) through aquaporin III, with cationic ion-exchange resin (10)There is ion-exchange reactions, recharge into other source of clean water finally by delivery port (11).
Example 1
To middle and lower reach of Yangtze River local ground watering extracting, first pass into settling zone (13), agitator stirs (2), turnsSpeed is 60r/min, and precipitation, enters enrichment region (14) through aquaporin I (3) after precipitation, water proof baffle plate (4)Be spaced apart 10cm, part underground water, by semipermeable membrane (6), enters micro-electrolysis zone (15) through aquaporin II,After underground water electrolysis subsequently, enter ion-exchange area (12), cationic ion-exchange resin (10) by crossing aquaporin III (9)Loading is 30g/L. Finally, the underground water of processing is discharged through delivery port (11), and treatment cycle completes,Recording the front cadmium concentration content of groundwater treatment is 0.0108mg/L, and after processing, cadmium concentration is 0.00120mg/L, thisInvention 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 zone (13), agitator stirs (2), turnsSpeed is 120r/min, and precipitation, enters enrichment region (14), water proof baffle plate through aquaporin I (3) after precipitation(4) be spaced apart 15cm, part underground water, by semipermeable membrane (6), enters micro-electrolysis zone through aquaporin II(15), after underground water electrolysis subsequently, enter ion-exchange area (12) by crossing aquaporin III (9), cation is handed overChanging resin (10) loading is 35/L. Finally, the underground water of processing is discharged through delivery port (11), locatesThe reason cycle completes and records the front cadmium concentration content of groundwater treatment is 0.0109mg/L, and after processing, cadmium concentration is0.00119mg/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 zone (13), agitator stirs (2), turnsSpeed is 180r/min, and precipitation, enters enrichment region (14), water proof baffle plate through aquaporin I (3) after precipitation(4) be spaced apart 15cm, part underground water, by semipermeable membrane (6), enters micro-electrolysis zone through aquaporin II(15), after underground water electrolysis subsequently, enter ion-exchange area (12) by crossing aquaporin III (9), cation is handed overChanging resin (10) loading is 40g/L. Finally, the underground water of processing is discharged through delivery port (11), locatesThe reason cycle completes, and recording the front arsenic concentration content of groundwater treatment is 0.011mg/L, and after processing, arsenic concentration is0.0011mg/L, the present invention is 90% to cadmium clearance in underground water.
Claims (5)
1. a device of repairing heavy metal cadmium in underground water, is characterized in that: comprise water inlet (1), agitator (2), mistake aquaporin I (3), water retaining separater (4), cross aquaporin II (5), pellicle (6), copper (7), zinc (8), cross aquaporin III (9), cationic ion-exchange resin (10), delivery port (11), ion-exchange area (12), settling zone (13), enrichment region (14), micro-electrolysis zone (15); The described underground water via water pump extracting, by water inlet (1) water access to plant, first enters settling zone (13), stirs and precipitates through agitator (2), leaves cadmium in part underground water; Underground water enters enrichment region (14) through aquaporin I (3) subsequently, in enrichment region, be provided with water retaining separater (4) and infiltration pellicle (6), pellicle (6) is arranged on water retaining separater (4) bottom, water is passed through from pellicle, and water retaining separater stops lower part cadmium; Underground water enters into micro-electrolysis zone (15) of being synthesized by copper Zinc material and carries out micro-electrolysis reaction through aquaporin II (5) subsequently, finally passed through again aquaporin III (9) and enter ion-exchange area (12) and under the effect of cationic ion-exchange resin, carry out ion-exchange, to reach the object of the heavy metal cadmium in thorough removal underground water.
2. a kind of device of repairing heavy metal cadmium in underground water according to claim 1, it is characterized in that: in described settling zone (13), be provided with agitator (2), in the underground water that contains cadmium, add after alkaline matter, through stirring, cadmium precipitation in underground water.
3. a kind of device of 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 pellicle (6), the water retaining separater of underground water through gradually raising, due to water time of staying difference in each baffle plate, part water stops, another part, by pellicle, is filtered down part cadmium in water, is concentrated.
4. a kind of device of repairing heavy metal cadmium in underground water according to claim 1, it is characterized in that: described micro-electrolysis zone (15) inwall is copper, and outer wall is zinc system, forms larger micro-electrolysis zone, underground water is by electrolysis zone, part cadmium generation micro-electrolysis reaction in water.
5. a kind of device of repairing heavy metal cadmium in underground water according to claim 1, it is characterized in that: hydroxide filler type cationic ion-exchange resin (10) is housed in described ion-exchange area (12), when underground water passes through, in water, cadmium generation ion-exchange reactions, thoroughly removes cadmium.
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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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| 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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