CN104326592A - Method for restoration of heavy metal mercury in groundwater - Google Patents
Method for restoration of heavy metal mercury in groundwater Download PDFInfo
- Publication number
- CN104326592A CN104326592A CN201410529884.XA CN201410529884A CN104326592A CN 104326592 A CN104326592 A CN 104326592A CN 201410529884 A CN201410529884 A CN 201410529884A CN 104326592 A CN104326592 A CN 104326592A
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- Prior art keywords
- mercury
- water
- district
- heavy metal
- underground water
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Classifications
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F2103/001—Runoff or storm water
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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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Water Treatment By Sorption (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
Belonging to the field of sewage treatment, the invention relates to a method for restoration of heavy metal mercury in groundwater. The method includes: introducing mercury-containing wastewater into a settling zone (2) to perform settling, then conducting stirring by a stirrer (6) to make part of mercury settle; then letting the mercury-containing wastewater enter a coagulation zone (3) through a water channel I (11), and adding polyaluminium chloride to accelerate settlement; then making the mercury-containing wastewater enter a concentration zone (4) equipped with a semipermeable membrane (7) and a row of water insulation baffle plates (8) through a water channel II (12), in the staying period of a previous baffle plate, making part of water permeate the semipermeable membrane to make the wastewater lose moisture, thus achieving concentration; then letting the mercury-containing wastewater enter an ion exchange zone (5) through a water channel III (13), with groups on resin (9) having very strong adsorption capacity on mercury ions, purifying the wastewater, and finally discharging water through a water outlet (10). The device has a raw wastewater concentration of about 26mg/L, a water outlet concentration of about 0.007mg/L, and a removal rate of 99.97%. Through confirmation, the device can well purify groundwater.
Description
Technical field
The present invention relates to a kind of method of repairing heavy metal Hg in underground water, belong to sewage treatment area.
Background technology
Underground water is the important component part of nature water cycle, with mankind's activity and survive closely bound up.Along with raw development, 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.China is that mercury is produced and uses big country, data presentation 2005,2006, and mercury in China output accounts for about 60% of global total mercury output, and mercury demand accounts for 30% ~ 40%, all occupies first place, the whole world.Meanwhile, China is also global mercury emissions big country.End 2010, the annual human activity in the whole world has 2000 tons to the mercury emission of air, and wherein China's annual discharge mercury is about 500-600 ton, account for global mercury emissions total amount 1/4 more than.Mankind's activity causes water body mercury pollution, mainly from the waste water of the industrial discharges such as chlor-alkali, plastics, battery, electronics.1970 ~ 1979 years whole world is because mankind's activity is directly to the total amount about 1.6 ten thousand tons of discharge into water mercury according to estimates; Total mercury discharged to air reaches about 100,000 tons; Enter soil total mercury and be about 100,000 tons, and also will return into water body along with water cycle discharged to air and soil, thus cause the severe contamination of water body.
Under normal circumstances to the heavy metal water bodys such as mercury reparation have chemical precipitation method, Coagulation Method etc., but the water outlet residual sulfur after chemical precipitation method process can produce pollution problem, and more difficult for the monitoring of sulfide excess.Coagulation Method is high for concentration, and the more clear wastewater treatment difficulty of water quality is comparatively large, and therefore two kinds of methods now have certain difficulty for the mercury in process underground water.
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 method for heavy metal Hg in the high reparation underground water of repair rate.
In order to reach above-mentioned purpose, the technical scheme of employing is as follows:
(1) by the geological prospecting to manufacturing district and rear perimeter edge village underground water, distribution situation and its flow direction in polluted underground water source is determined;
(2) again by Ground water Quality Survey, heavy metal Hg point source in Groundwater is determined;
(3) contrast heavy metal Hg point-source distribution figure in Groundwater, find heavily contaminated region and its source, and beat a bite well in the key area that underground water source pollutes or source place;
(4) near village or distance key area comparatively far away and pollute lighter place and beat same a bite well, well depth is gone directly underground water source contact surface;
(5) underground water is extracted out to the heavy metal Hg prosthetic device of ground with water pump from the key area of pollution of waterhead, after prosthetic device process, directly pass near village or in the well at light source of pollution place, simultaneously, pour into the river after purification, until the well near village is filled.
Described heavy metal chromium prosthetic device is divided into 4th district: a district is settling region (2), 2nd district are coagulation district (3), 3rd district are enrichment region (4), 4th district are ion-exchange area (5).
A described settling region, district (2) is a taper, and add sodium bisulfide in case, inside is provided with an agitator (6), and under stirring, part mercury is precipitated, the cone end is throw out.
2nd described district are coagulation district (3), in pond, add alum, make mercury-containing waste water Accelerated subsidence.
A semi-permeable membranes (7) and row's water proof baffle plate (8) is had in three described enrichment regions, district (4), mercury-containing waste water is through the water proof baffle plate (8) of different levels, due to the difference of time, the period is stopped at previous dividing plate, part water is through semi-permeable membranes, its raw wastewater is dried out, and inner mercury is concentrated.
Four described ion-exchange area, district (5) interior filling ion-exchange resins (9), the group on resin has very strong adsorptive power to mercury ion, thus reaches the object of purification of ground water.
Principle of work of the present invention: first mercury-containing waste water is passed into settling region, under the abundant stirring of agitator, makes part mercury precipitate; Then passed through aquaporin I and enter coagulation district, mercury-containing waste water, under the effect of polymerize aluminum chloride, accelerates precipitation; Then mercury-containing waste water is passed into enrichment region, under the interaction of semi-permeable membranes and waterproof bulkhead, mercury is concentrated fully; Last mercury-containing waste water enters ion-exchange area, under the absorption of ion exchange resin, water is further purified.Mercury-containing waste water, after prosthetic device process, directly passes near village or in the well at light source of pollution place, meanwhile, pours into the river after purification, until the well near village is filled.
Application method of the present invention is:
(1) by the geological prospecting to manufacturing district and rear perimeter edge village underground water, distribution situation and its flow direction in polluted underground water source is determined;
(2) again by Ground water Quality Survey, heavy metal Hg point source in Groundwater is determined;
(3) contrast heavy metal Hg point-source distribution figure in Groundwater, find heavily contaminated region and its source, and beat a bite well in the key area that underground water source pollutes or source place;
(4) near village or distance key area comparatively far away and pollute lighter place and beat same a bite well, well depth is gone directly underground water source contact surface;
(5) underground water is extracted out to the heavy metal Hg prosthetic device of ground with water pump from the key area of pollution of waterhead, its treating processes is: extracted out by mercury-containing waste water water pump and put in the prosthetic device of ground heavy metal Hg, its concrete operation step is: mercury-containing waste water is entered in settling region (2) to carry out precipitating from water-in (1) and stirred by the agitator (6) in settling region (2), and part mercury is precipitated; Then passed through aquaporin I (11) and entered coagulation district (3), and added polymerize aluminum chloride wherein, made mercury-containing waste water Accelerated subsidence; Then pass through aquaporin II (12) and enter enrichment region (4), a semi-permeable membranes (7) and row's water proof baffle plate (8) is had in enrichment region (4), mercury-containing waste water is through the water proof baffle plate (8) of different levels, due to the difference of time, when previous dividing plate stops, part water, through semi-permeable membranes, makes its raw wastewater dry out, and inner mercury is concentrated; Then mercury-containing waste water passed through aquaporin III (13) and entered into ion-exchange area (5), group on Zeo-karb (9) has very strong adsorptive power to mercury ion, thus underground water is purified, the complete water of final purification is by water outlet (10) water outlet.
The significant advantage that the present invention has is:
(1) utilize the dividing plate in enrichment region to the obstruct of water and semi-permeable membranes only allow water molecules through, thus mercury is concentrated;
(2) utilize ion exchange method process mercury-containing waste water, make mercury content reach below 0.005mg/L, there is no secondary pollution, ion-exchange.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in further detail
Fig. 1 is structural representation of the present invention.
Wherein: (1) water inlet (2) settling region (3) coagulation district (4) enrichment region (5) ion-exchange area (6) agitator (7) semi-permeable membranes (8) water proof baffle plate (9) ion exchange resin (10) water outlet (11) excessively aquaporin I (12) crosses aquaporin II (13) aquaporin III excessively.
Specific embodiments
Repair a method for heavy metal Hg in underground water, method is:
(1) by the geological prospecting to manufacturing district and rear perimeter edge village underground water, distribution situation and its flow direction in polluted underground water source is determined;
(2) again by Ground water Quality Survey, heavy metal Hg point source in Groundwater is determined;
(3) contrast heavy metal Hg point-source distribution figure in Groundwater, find heavily contaminated region and its source, and beat a bite well in the key area that underground water source pollutes or source place;
(4) near village or distance key area comparatively far away and pollute lighter place and beat same a bite well, well depth is gone directly underground water source contact surface;
(5) underground water is extracted out to the heavy metal Hg prosthetic device of ground with water pump from the key area of pollution of waterhead, after prosthetic device process, directly pass near village or in the well at light source of pollution place, simultaneously, pour into the river after purification, until the well near village is filled.
Described heavy metal chromium prosthetic device is divided into 4th district: a district is settling region (2), 2nd district are coagulation district (3), 3rd district are enrichment region (4), 4th district are ion-exchange area (5).
A described settling region, district (2) is a taper, and inside is provided with an agitator (6), and under stirring, part mercury is precipitated, the cone end is throw out.
2nd described district are coagulation district (3), in pond, add polymerize aluminum chloride, make mercury-containing waste water Accelerated subsidence.
A semi-permeable membranes (7) and row's water proof baffle plate (8) is had in three described enrichment regions, district (4), mercury-containing waste water is through the water proof baffle plate (8) of different levels, due to the difference of time, when previous dividing plate stops, part water is through semi-permeable membranes, its raw wastewater is dried out, and inner mercury is concentrated.
Four described ion-exchange area, district (5) interior filling ion-exchange resins (9), the group on resin has very strong adsorptive power to mercury ion, thus reaches the object of purification of ground water.
Example 1
Have passed the geological exploration to so-and-so manufacturing district and rear perimeter edge village underground water, determine this polluted underground water source distribution situation and its flow direction, again by the monitoring to quality of groundwater, determine heavy metal Hg point-source distribution figure in Groundwater, heavy metal Hg point-source distribution figure in contrast Groundwater, find heavily contaminated region and its source, and beat a bite well in the key area that underground water source pollutes or source place, near village or distance key area comparatively far away and pollute lighter place and beat same a bite well, well depth is gone directly underground water source contact surface, the concentration of the underground water extracted out from emphasis Polluted area well mercury is after testing 28mg/L, then the water of releasing is placed in the prosthetic device of ground heavy metal Hg, after prosthetic device process, surveying its concentration is again 0.008mg/L, the clearance of mercury is 99.97%, meet discharging standards.
Example 2
Have passed the geological exploration to so-and-so manufacturing district and rear perimeter edge village underground water, determine this polluted underground water source distribution situation and its flow direction, again by the monitoring to quality of groundwater, determine heavy metal Hg point-source distribution figure in Groundwater, heavy metal Hg point-source distribution figure in contrast Groundwater, find heavily contaminated region and its source, and beat a bite well in the key area that underground water source pollutes or source place, near village or distance key area comparatively far away and pollute lighter place and beat same a bite well, well depth is gone directly underground water source contact surface, the concentration of the underground water extracted out from emphasis Polluted area well mercury is after testing 25mg/L, then the water of releasing is placed in the prosthetic device of ground heavy metal Hg, after prosthetic device process, surveying its concentration is again 0.005mg/L, the clearance of mercury is 99.98%, meet discharging standards.
Example 3
Have passed the geological exploration to so-and-so manufacturing district and rear perimeter edge village underground water, determine this polluted underground water source distribution situation and its flow direction, again by the monitoring to quality of groundwater, determine heavy metal Hg point-source distribution figure in Groundwater, heavy metal Hg point-source distribution figure in contrast Groundwater, find heavily contaminated region and its source, and beat a bite well in the key area that underground water source pollutes or source place, near village or distance key area comparatively far away and pollute lighter place and beat same a bite well, well depth is gone directly underground water source contact surface, the concentration of the underground water extracted out from emphasis Polluted area well mercury is after testing 26mg/L, then the water of releasing is placed in the prosthetic device of ground heavy metal Hg, after prosthetic device process, surveying its concentration is again 0.007mg/L, the clearance of mercury is 99.97%, meet discharging standards.
Claims (6)
1. repair a method for heavy metal Hg in underground water, it is characterized in that:
(1) by the geological prospecting to manufacturing district and rear perimeter edge village underground water, distribution situation and its flow direction in polluted underground water source is determined;
(2) again by Ground water Quality Survey, heavy metal Hg point source in Groundwater is determined;
(3) contrast heavy metal Hg point-source distribution figure in Groundwater, find heavily contaminated region and its source, and beat a bite well in the key area that underground water source pollutes or source place;
(4) near village or distance key area comparatively far away and pollute lighter place and beat same a bite well, well depth is gone directly underground water source contact surface;
(5) underground water is extracted out to the heavy metal Hg prosthetic device of ground with water pump from the key area of pollution of waterhead, after prosthetic device process, directly pass near village or in the well in slight pollution source, simultaneously, pour into the river after purification, until village well that is neighbouring or slight pollution source is filled.
2. a kind of method of repairing heavy metal Hg in underground water according to claim 1, it is characterized in that: described heavy metal Hg prosthetic device is divided into 4th district, a district is settling region (2), 2nd district are coagulation district (3), 3rd district are enrichment region (4), 4th district are ion-exchange area (5).
3. a kind of method of repairing heavy metal Hg in underground water according to claim 1, it is characterized in that: a described settling region, district (2) is a taper, and inside is provided with an agitator (6), under stirring, part mercury is precipitated, and the cone end is throw out.
4. a kind of method of repairing heavy metal Hg in underground water according to claim 1, is characterized in that: 2nd described district are coagulation district (3), in pond, add polymerize aluminum chloride, make mercury-containing waste water Accelerated subsidence.
5. a kind of method of repairing heavy metal Hg in underground water according to claim 1, it is characterized in that: in three described enrichment regions, district (4), have a semi-permeable membranes (7) and row's water proof baffle plate (8), mercury-containing waste water is through the water proof baffle plate (8) of different levels, due to the difference of time, when previous dividing plate stops, part water, through semi-permeable membranes, makes its raw wastewater dry out, and inner mercury is concentrated.
6. a kind of method of repairing heavy metal Hg in underground water according to claim 1, it is characterized in that: four described ion-exchange area, district (5) interior potting resins (9), group on resin has very strong adsorptive power to mercury ion, thus reaches the object of purification of ground water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410529884.XA CN104326592A (en) | 2014-10-09 | 2014-10-09 | Method for restoration of heavy metal mercury in groundwater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410529884.XA CN104326592A (en) | 2014-10-09 | 2014-10-09 | Method for restoration of heavy metal mercury in groundwater |
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| CN104326592A true CN104326592A (en) | 2015-02-04 |
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| CN201410529884.XA Pending CN104326592A (en) | 2014-10-09 | 2014-10-09 | Method for restoration of heavy metal mercury in groundwater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113804677A (en) * | 2021-09-16 | 2021-12-17 | 杨兴红 | Rapid detection kit for pH of aquaculture water |
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|---|---|---|---|---|
| KR20030091913A (en) * | 2003-11-15 | 2003-12-03 | 김동진 | Livestock wastewater treatment system for removal of T-N and chromatility attached a reverse osmosis membrane block and an electrolysis tank |
| CN101186373A (en) * | 2007-11-30 | 2008-05-28 | 华南理工大学 | Method for processing paroxysmal mercury polluted water under emergency condition |
| CN102295360A (en) * | 2010-06-23 | 2011-12-28 | 中国科学院生态环境研究中心 | Method for simultaneously removing arsenic and fluorine in ground water |
| CN102452754A (en) * | 2010-10-28 | 2012-05-16 | 四川久大制盐有限责任公司 | A method for preparing alkaline ionized water by electroreduction |
| CN203061547U (en) * | 2013-01-25 | 2013-07-17 | 北京中地泓科环境科技有限公司 | Comprehensive repair system for groundwater chromium pollution fields |
-
2014
- 2014-10-09 CN CN201410529884.XA patent/CN104326592A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030091913A (en) * | 2003-11-15 | 2003-12-03 | 김동진 | Livestock wastewater treatment system for removal of T-N and chromatility attached a reverse osmosis membrane block and an electrolysis tank |
| CN101186373A (en) * | 2007-11-30 | 2008-05-28 | 华南理工大学 | Method for processing paroxysmal mercury polluted water under emergency condition |
| CN102295360A (en) * | 2010-06-23 | 2011-12-28 | 中国科学院生态环境研究中心 | Method for simultaneously removing arsenic and fluorine in ground water |
| CN102452754A (en) * | 2010-10-28 | 2012-05-16 | 四川久大制盐有限责任公司 | A method for preparing alkaline ionized water by electroreduction |
| CN203061547U (en) * | 2013-01-25 | 2013-07-17 | 北京中地泓科环境科技有限公司 | Comprehensive repair system for groundwater chromium pollution fields |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113804677A (en) * | 2021-09-16 | 2021-12-17 | 杨兴红 | Rapid detection kit for pH of aquaculture water |
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Application publication date: 20150204 |