CN104071945B - A kind of processing unit and its method of mine heavy-metal acid waste water - Google Patents
A kind of processing unit and its method of mine heavy-metal acid waste water Download PDFInfo
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- CN104071945B CN104071945B CN201410262287.5A CN201410262287A CN104071945B CN 104071945 B CN104071945 B CN 104071945B CN 201410262287 A CN201410262287 A CN 201410262287A CN 104071945 B CN104071945 B CN 104071945B
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Abstract
A kind of processing unit and its processing method of mine heavy-metal acid waste water, the processing unit realizes flowing of the liquid between sedimentation basin, reduction apparatus, desulfurizer, PRB devices and pH regulating reservoirs by pumping system, water guide guard system, realizes the pH regulations of the reduction of sulfate in waste water, waste water desulfurization process, heavy metal pollution removal and waste water.Present invention process program is simple, operation is simple, cost is low, efficiency high, can realize that the scale that heavy metal pollution of mine acid waste water is administered is applied with engineering; simultaneously; whole technological process pollutant is in relative confined space; the effective generation for avoiding secondary pollution during pollution control; the safe disposal of different type heavy metal pollution of mine acid waste water is can be widely applied to, can effectively remove the heavy metal pollutions such as arsenic, lead, copper, zinc, chromium and cadmium in waste water.
Description
Technical field
The present invention relates to ecology and field of Environment Protection, is specifically, is related to a kind of biology of heavy metal pollution of mine acid waste water
Chemical processing device and the method for disposal to heavy metal pollution of mine acid waste water.
Background technology
Developed with the continuous exploitation of China's mine resources, the bulk deposition of the mine tailing such as gangue is asked as important environment
Topic.Accumulative up to hundred million tons of the 60-100, and thus having triggered a series ofly of mine tailing caused by current mining exploitation according to statistics
Matter environmental problem.Wherein heavy metal pollution of mine waste water turns into the major hidden danger of current mine entironment safety, particularly contains
There is the gangue of a large amount of sulphur, because the oxidation of pyrite generates substantial amounts of acid waste water, meanwhile, acid condition accelerates mine tailing
In in passivation state heavy metal dissolving, therefore, mine wastewater is mainly shown as relatively low pH value, sulfate containing high concentration and solvable
The heavy metal ion of property.
Microbiological factor is also an important factor for heavy metal pollution of mine acid waste water produces.SRB is the one of anaerobic bacteria
Kind, and be distributed widely in soil and water body, it can be by the use of the organic matter in environment as carbon source, and utilizes bacterial biof iotalm
Hydrogen caused by interior, by sulfate reduction into hydrogen sulfide, while it produces individual hydrogen sulfide and the pH of water body can be caused to reduce, and relatively low
PH environment can cause bacterial metabolism effect to strengthen again, so as to form a kind of vicious circle.Therefore it is acid to heavy metal pollution of mine
The basic element sulphur in water body environment is removed of the improvement of waste water.
Currently, Method for processing acid mine drainage is broadly divided into 2 kinds of neutralisation and microbial method.Neutralisation is the most frequently used
Method, i.e., add antalkali (soda lime, calcium hydroxide, calcium carbonate, blast furnace slag, dolomite etc.) in oxytropism waste water, one
Aspect improves the pH value of waste water, and the heavy metal ion in another aspect waste water occurs chemical reaction with nertralizer and forms hydroxide
Heavy metal ion in thing precipitation, removal water body.In order to improve treatment effect, neutralisation generally with oxidation or aeration process (such as
Fe2+ is changed into Fe3+) it is used in combination.Microbial method is to utilize the sulfur cycle principle in nature, utilizes sulfate reduction
H2S by sulfate reduction into H2S, and is oxidized to by bacterium by the bioreduction of alienation sulfate using certain micro-organisms
Elemental sulfur, while heavy metal ion " accumulation " in microbial body is got up.With the progress of science, the processing of acid wastewater in mine
Technology is continuously available new development, such as wetland variation method, biomembrane adsorption treatment method and biochemical material filtration method.
The conventional treatment method of heavy metal wastewater thereby mainly includes：Chemical precipitation method, ion-exchange, evaporation concentration method, electricity
Solution, activated carbon and silica gel adsorption and membrane separation process etc., but not thorough removal, somewhat expensive be present, have in these methods
The shortcomings of malicious sludge or other waste materials.
The current regulation and control for acid wastewater in mine pH both at home and abroad and the research of mine wastewater Heavy Metal Pollution Control obtain
Certain progress, however, it is difficult by single that the particularity of mine system engineering, which has been doomed its acidifying and heavy metal pollution and deposited,
Means are thoroughly improved to the water quality of mine wastewater.
Therefore, how waste water acid-base accommodation technique effectively to be combined with the Heavy Metal Pollution Control technique of waste water, from basic
On thoroughly solve the acidifying and heavy metal pollution of ore deposit waste water, secondary dirt is effectively avoided by rational technical matters and equipment
Dye produces, and is the key problem in technology of current heavy metal pollution of mine wastewater treatment.
The content of the invention
It is an object of the invention to propose a kind of heavy metal pollution of mine acid waste water biochemistry treatment device and
To the method for disposal of heavy metal pollution of mine acid waste water, the biological chemical device method of the heavy metal pollution of mine acid waste water
Flowing of the liquid between different disposal device is realized by pumping system, water guide guard system, waste water by settler, it is also original-pack
Put, ((Permeable Reactive Barrier permeable reactive barriers) device and pH regulating reservoirs realize sulfate in waste water to PRB
Reduction, waste water desulfurization process, the pH of heavy metal pollution removal and waste water adjust, also with desulfurizer, desulfurization is realized, from root
Solve acidifying and the heavy metal pollution problem of heavy metal pollution of mine acid waste water in sheet.
To use following technical scheme up to this purpose, the present invention：
A kind of biochemistry treatment device of heavy metal pollution of mine acid waste water, including：Sedimentation basin, reduction apparatus, take off
Sulphur device, PRB devices and pH regulating reservoirs,
Sedimentation basin, for carrying out precipitation separating treatment to the solid impurity in waste water, improve the technological effect of subsequent technique；
Reduction apparatus, the anaerobic environment quickly bred for providing SBR, improve waste water in sulfate reduction efficiency；
Desulfurizer, the top of the reduction apparatus is connected, for effectively to caused useless during micro-reduction
Gas carries out desulfurization process；
PRB devices, for effectively realizing the removal of heavy metal in waste water；
PH regulating reservoirs, for realizing that the pH of processed waste water is adjusted so that processed waste water pH is stable in zone of reasonableness；
Wherein, for sedimentation basin, reduction apparatus, PRB devices and pH regulating reservoirs, water guide piping successively is passed through between each device
System and the pumping system in water guide guard system realize olderly flowage of the liquid between different device.
Preferably, the material selection of sedimentation basin is concrete, and horizontal and vertical seepage control is done inside sedimentation basin and is handled, antiseepage
Material is HDPE antiseepage films, antiseepage film thickness >=2mm, and the side bottom of sedimentation basin sets PVC oral siphons, PVC oral siphons and the
One pump connects.
Preferably, reduction apparatus side is connected by the first aqueduct with sedimentation basin, and top is provided with strain addition port,
Upper end is connected by the first unidirectional airway tube with desulfurizer, and the end of the suction waste water of the first aqueduct has the first nylon yarn
Cloth integument, the first aqueduct are additionally provided with the second pump.
Preferably, desulfurizer bottom connects the first unidirectional airway tube, and upside sets the second unidirectional airway tube to exclude gas
Body, desulfurizer packing material select iron oxide, and Particle size requirements are in the range of 0.6-2.4mm.
Preferably, PRB devices side is connected by the second aqueduct with reduction apparatus, and downside passes through the 3rd aqueduct and pH
Regulating reservoir connects, and the second aqueduct is additionally provided with the 3rd pump, and the upper end of the 3rd aqueduct is enclosed with the second nylon gauze integument,
Packing material is followed successively by quartz sand layer, heavy-metal adsorption material layer and quartz sand layer, thickness proportion and is from top to bottom in PRB devices
1:8:1, heavy-metal adsorption material is volume ratio 1:2 activated carbons being thoroughly mixed and Zero-valent Iron.
Preferably, the material selection of pH regulating reservoirs is concrete, and horizontal and vertical seepage control is done inside pH regulating reservoirs and is handled,
Impervious material is HDPE antiseepage films, and antiseepage film thickness >=2mm, the 4th aqueduct of side bottom setting of pH regulating reservoirs, the 4th leads
Water pipe also sets up water guide mouth valve.
Further, the invention also discloses a kind of biochemistry using above-mentioned heavy metal pollution of mine acid waste water
The method that processing unit is disposed to heavy metal pollution of mine acid waste water, comprises the following steps：
(1) SRB (sulfate reducing bacteria) bacterial screening：Isolated and purified by culture medium, the efficient sulphur in culture screening native country
Hydrochlorate reducing bacteria；
(2) wastewater sedimentation：Heavy metal pollution of mine acid waste water is by the first pumped to sedimentation basin, by preliminary heavy
Form sediment, remove the solid impurities such as silt；Start the second pump, waste liquid is pumped into reduction apparatus；
(3) strain is inoculated with：Strain is inoculated with into heavy metal pollution acid wastewater in mine, strain addition by strain adding mouth
Finish sealing strain adding mouth；
(4) sulfate reduction：SRB bacterium are utilized to heavy metal pollution of mine acid waste water in confined space after strain inoculation
Middle sulfate carries out reduction treatment；
(5) exhuast gas desulfurization：Caused waste gas voluntarily enters desulfurizer by unidirectional airway tube in sulfate-reducing process
Carry out desulfurization process；
(6) PRB is filtered：Start the 3rd pump after the completion of sulfate reduction, waste liquid is pumped into PRB devices carries out heavy metals removal
Processing；
(7) pH is adjusted：Filtrate pH is adjusted as pH adjusting agent using solution so that the pH for the treatment of fluid is in 6.8-
Between 7.2；
(8) qualified discharge is monitored：Water guide mouth valve is being opened, is monitoring floss hole effluent quality, the main thing that monitors is vulcanization
Thing, arsenic, lead, copper, zinc, chromium and cadmium, safety dumping can be carried out after handling wastewater to reach standard；Below standard waste water reenters step (2)
Again handle.
Preferably, this method each step include it is one or more of following：
The selection requirements of SBR strains are in step (1)：From mine mining area native country strain, progress enrichment culture, separation are pure
Change, filter out efficient SBR strains；And strain idenfication is carried out to the strain of screening；
Time >=20min of precipitation of the waste water in sedimentation basin in step (2)；
The inoculation dosage of strain is 3.5-4.0g/L in step (3)；
Sulfate sulfate-reducing process condition is in step (4)：Waste liquid seal time >=24h after strain inoculation, temperature
Regulation and control are at 15-40 DEG C；
Exhuast gas desulfurization is in step (5)：Using dry desulfurizing process, desulfurizing agent selects iron oxide, the Particle size requirements of desulfurizing agent
In the range of 0.6-2.4mm；
PRB material selections activated carbon and Zero-valent Iron in step (6), its volume ratio are 1:2, hybrid mode is mixed to be sufficiently stirred
Close；
PH adjusting agent is 10%NaHCO in step (7)3Solution.
It is further preferred that the reference standard of the monitoring qualified discharge of waste liquid is in step (8)《Surface water environment quality mark
It is accurate》(GB3838-2002) V classes water standard, the main thing that monitors, can after up to standard for sulfide, arsenic, lead, copper, zinc, chromium and cadmium etc.
Carry out safety dumping；Below standard waste water reenters step (2) and handled again.
The biochemistry treatment device of the heavy metal pollution of mine acid waste water of the present invention passes through pumping system, water guide guard system
Flowing of the liquid between different disposal device is realized, waste water passes through sedimentation basin, reduction apparatus, desulfurizer, PRB devices and pH
Regulating reservoir realizes the pH regulations of the reduction of sulfate in waste water, waste water desulfurization process, heavy metal pollution removal and waste water, from basic
On solve acidifying and the heavy metal pollution problem of heavy metal pollution of mine acid waste water.
It is acid that the processing method of heavy metal pollution of mine acid waste water of the present invention changes traditional heavy metal pollution mine
Wastewater treatment mode, it is reasonably handled acid wastewater in mine, desulfurization process and heavy metal pollution handle multiple complicated works
Skill process combines together, and effectively solves current techniques and is limited only to Disposal of Acidic Mining Waste Water and is given up with mine heavy metal
The single treatment mode drawback of water harnessing；Meanwhile the present invention solves current acid wastewater in mine sulfate from core and caused
Water acidification problem.The pH that can effectively realize acid wastewater in mine by present treatment technology regulates and controls, while can have
Heavy metal pollution, the processed waste waters such as arsenic, lead, copper, zinc, chromium and cadmium in the removal waste water of effect reach《Surface water environment quality
Standard》(GB3838-2002) requirement of the V classes water quality for the content of beary metal limit value such as sulfide, arsenic, lead, copper, zinc, chromium and cadmium.
Present invention process program is simple, operation is simple, cost is low, efficiency high, can realize heavy metal pollution of mine acidity
The scale of waste water treatment is applied with engineering, meanwhile, whole technological process pollutant is in relative confined space, effectively
The generation of secondary pollution during pollution control is avoided, can be widely applied to different type heavy metal pollution of mine acid waste water
Safe disposal.
Brief description of the drawings
Fig. 1 is the biochemistry treatment device of heavy metal pollution of mine acid waste water according to a particular embodiment of the invention
Structured flowchart；
Fig. 2 is the biochemistry treatment device using the heavy metal pollution of mine acid waste water of the present invention to mine heavy metal
Pollute the flow chart that acid waste water carries out the method for safe disposal.
The technical characteristic that reference in figure refers to respectively is：
1st, PVC oral siphons；2nd, the first pump；3. the first nylon gauze integument；4th, sedimentation basin；5th, the first aqueduct；6th,
Two pumps；7th, reduction apparatus；8th, strain addition port；9th, the first unidirectional airway tube；10th, desulfurizer；11st, the second unidirectional air guide
Pipe；12nd, the 3rd pump；13rd, the second aqueduct；14th, PRB devices；15th, the second nylon gauze integument；16th, the 3rd aqueduct；17、
PH regulating reservoirs；18th, water guide mouth valve；19th, the 4th aqueduct 4.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that in order to just
Part related to the present invention rather than entire infrastructure are illustrate only in description, accompanying drawing.
Embodiment 1：
Referring to Fig. 1, the bioid of heavy metal pollution of mine acid waste water according to a particular embodiment of the invention is disclosed
Learn the block diagram of processing unit.
The biochemistry treatment device of the heavy metal pollution of mine acid waste water includes：Sedimentation basin 4, reduction apparatus 7, take off
Sulphur device 10, PRB devices 14 and pH regulating reservoirs 17.
Sedimentation basin, for carrying out precipitation separating treatment to the solid impurity in waste water, improve the technological effect of subsequent technique；
Reduction apparatus, the anaerobic environment quickly bred for providing SBR, improve waste water in sulfate reduction efficiency；
Desulfurizer, the top of the reduction apparatus is connected, for effectively to caused useless during micro-reduction
Gas carries out desulfurization process；
PRB devices, for effectively realizing the removal of heavy metal in waste water；
PH regulating reservoirs, for realizing that the pH of processed waste water is adjusted so that processed waste water pH is stable in zone of reasonableness；
Wherein, for sedimentation basin, reduction apparatus, PRB devices and pH regulating reservoirs, water guide piping successively is passed through between each device
System and the pumping system in water guide guard system realize olderly flowage of the liquid between different device.
Preferably, the material selection of sedimentation basin is concrete, and horizontal and vertical seepage control is done inside sedimentation basin and is handled, antiseepage
Material is HDPE antiseepage films, antiseepage film thickness >=2mm, and the side bottom of sedimentation basin sets PVC oral siphons 1, PVC oral siphons 1 with
First pump 2 connects.
Preferably, reduction apparatus side is connected by the first aqueduct 5 with sedimentation basin, and top is provided with strain addition port
8, upper end is connected by the first unidirectional airway tube 9 with desulfurizer, and the end of the suction waste water of the first aqueduct 5 has the first Buddhist nun
Imperial gauze wrapped layer 3, the first aqueduct 5 are additionally provided with the second pump 6.
Preferably, desulfurizer bottom connects the first unidirectional airway tube 9, and upside sets the second unidirectional airway tube 11 to exclude
Gas, desulfurizer packing material select iron oxide, and Particle size requirements are in the range of 0.6-2.4mm.
Preferably, PRB devices side is connected by the second aqueduct 13 with reduction apparatus, and downside passes through the 3rd aqueduct 16
It is connected with pH regulating reservoirs, the second aqueduct 13 is additionally provided with the 3rd pump 12, and the upper end of the 3rd aqueduct 16 is enclosed with the second nylon yarn
Cloth integument 15, packing material is followed successively by quartz sand layer, heavy-metal adsorption material layer and quartz sand from top to bottom in PRB devices
Layer, thickness proportion 1:8:1, heavy-metal adsorption material is volume ratio 1:2 activated carbons being thoroughly mixed and Zero-valent Iron.
Preferably, the material selection of pH regulating reservoirs is concrete, and horizontal and vertical seepage control is done inside pH regulating reservoirs and is handled,
Impervious material is HDPE antiseepage films, antiseepage film thickness >=2mm.The 4th aqueduct 19 of side bottom setting of pH regulating reservoirs, the 4th
Aqueduct 19 also sets up water guide mouth valve 18.
Embodiment 2：
Further, the invention also discloses a kind of biochemistry using above-mentioned heavy metal pollution of mine acid waste water
The method that processing unit carries out safe disposal to heavy metal pollution of mine acid waste water, comprises the following steps：
(1) SRB (sulfate reducing bacteria) bacterial screening：Isolated and purified by culture medium, the efficient sulphur in culture screening native country
Hydrochlorate reducing bacteria；
(2) wastewater sedimentation：Heavy metal pollution of mine acid waste water is by the first pumped to sedimentation basin, by preliminary heavy
Form sediment, remove the solid impurities such as silt；Start the second pump, waste liquid is pumped into reduction apparatus；
(3) strain is inoculated with：Strain is inoculated with into heavy metal pollution acid wastewater in mine, strain addition by strain adding mouth
Finish sealing strain adding mouth；
(4) sulfate reduction：SRB bacterium are utilized to heavy metal pollution of mine acid waste water in confined space after strain inoculation
Middle sulfate carries out reduction treatment；
(5) exhuast gas desulfurization：Caused waste gas voluntarily enters desulfurizer by unidirectional airway tube in sulfate-reducing process
Carry out desulfurization process；
(6) PRB is filtered：Start the 3rd pump after the completion of sulfate reduction, waste liquid is pumped into PRB devices carries out heavy metals removal
Processing；
(7) pH is adjusted：Filtrate pH is adjusted as pH adjusting agent using solution so that the pH for the treatment of fluid is in 6.8-
Between 7.2；
(8) qualified discharge is monitored：Water guide mouth valve is being opened, is monitoring floss hole effluent quality, the main thing that monitors is vulcanization
Thing, arsenic, lead, copper, zinc, chromium and cadmium, safety dumping can be carried out after handling wastewater to reach standard；Below standard waste water reenters step (2)
Again handle.
Preferably, this method each step include it is one or more of following：
The selection requirements of SBR strains are in step (1)：From mine mining area native country strain, progress enrichment culture, separation are pure
Change, filter out efficient SBR strains；And strain idenfication is carried out to the strain of screening.
Time >=20min of precipitation of the waste water in sedimentation basin in step (2).
The inoculation dosage of strain is 3.5-4.0g/L in step (3).
Sulfate sulfate-reducing process condition is in step (4)：Waste liquid seal time >=24h after strain inoculation, temperature
Regulation and control are at 15-40 DEG C.
Exhuast gas desulfurization is in step (5)：Using dry desulfurizing process, desulfurizing agent selects iron oxide, the Particle size requirements of desulfurizing agent
In the range of 0.6-2.4mm.
PRB material selections activated carbon and Zero-valent Iron in step (6), its volume ratio are 1:2, hybrid mode is mixed to be sufficiently stirred
Close.
PH adjusting agent is 10%NaHCO in step (7)3Solution.
The reference standard of the monitoring qualified discharge of waste liquid is in step (8)《Water environment quality standard》(GB3838-
2002) V classes water standard, the main thing that monitors is sulfide, arsenic, lead, copper, zinc, chromium and cadmium etc., and safe row can be carried out after up to standard
Put；Below standard waste water reenters step (2) and handled again.
Water quality contrast see the table below before and after heavy metal pollution of mine acid waste water reason.
Table 1：Heavy metal pollution of mine acid waste water water quality pollutant concentrations versus table before and after the processing
Table 2：Heavy metal pollution of mine acid waste water water quality pH contrast tables before and after the processing
It can be seen that handled using the present invention heavy metal pollution of mine acid waste water, by processing, sulfide, arsenic,
Lead, copper, zinc, chromium and cadmium can reach《Water environment quality standard》(GB3838-2002) V classes water standard.
It will be appreciated by those skilled in the art that the first aqueduct, the second aqueduct, the 3rd aqueduct and the 4th aqueduct can
Think that PVC aqueducts, and other suitable materials are made.
The biochemistry treatment device of the heavy metal pollution of mine acid waste water of the present invention passes through pumping system, water guide guard system
Flowing of the liquid between different disposal device is realized, waste liquid passes through sedimentation basin, reduction apparatus, desulfurizer, PRB devices and pH
Regulating reservoir realizes the pH regulations of the reduction of sulfate in waste liquid, waste liquid desulfurization process, heavy metal pollution removal and waste liquid, from basic
On solve acidifying and the heavy metal pollution problem of heavy metal pollution of mine acid waste water.The main function of sedimentation basin is to waste liquid
In solid impurity carry out precipitation separating treatment, improve the technological effect of subsequent technique；It is quickly numerous that reduction apparatus mainly provides SBR
The anaerobic environment grown, improve the reduction efficiency of sulfate in waste liquid；Desulfurizer can effectively to micro-reduction during
Caused waste gas carries out desulfurization process；PRB devices can effectively realize the removal of heavy metal in waste liquid；PH regulating reservoirs can be real
The pH regulations of existing processed waste water so that processed waste water pH is stable in zone of reasonableness.This method changes traditional heavy metal
Acid wastewater in mine processing mode is polluted, it is reasonably handled acid wastewater in mine, desulfurization process and heavy metal pollution are handled
Multiple complicated technique processes combine together, effectively solve current techniques be limited only to Disposal of Acidic Mining Waste Water with
The single treatment mode drawback that mine heavy metal wastewater thereby is administered；Meanwhile this technology solves current mine spent acidic from core
Water acidification problem caused by water sulfate.The pH that can effectively realize acid wastewater in mine by present treatment technology is adjusted
Control, while the heavy metal pollutions such as arsenic, lead, copper, zinc, chromium and the cadmium in waste water can be effectively removed, waste liquid reaches after processing《Earth's surface
Quality standard of water environment》(GB3838-2002) V classes water quality is for content of beary metal such as sulfide, arsenic, lead, copper, zinc, chromium and cadmiums
The requirement of limit value.This method process is simple, operation is simple, cost is low, efficiency high, can realize heavy metal pollution of mine acid
Property waste water treatment scale with engineering apply, meanwhile, whole technological process pollutant is in relative confined space, effectively
The generation for avoiding secondary pollution during pollution control, can be widely applied to different type heavy metal pollution of mine acid waste water
Safe disposal.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to is assert
The embodiment of the present invention is only limitted to this, for general technical staff of the technical field of the invention, is not taking off
On the premise of from present inventive concept, some simple deduction or replace can also be made, should all be considered as belonging to the present invention by institute
Claims of submission determine protection domain.
Claims (5)
1. a kind of biochemistry treatment device of heavy metal pollution of mine acid waste water, including：Sedimentation basin, reduction apparatus, desulfurization
Device, PRB devices and pH regulating reservoirs,
Sedimentation basin, for carrying out precipitation separating treatment to the solid impurity in waste water, improve the technological effect of subsequent technique；
Reduction apparatus, the anaerobic environment quickly bred for providing SRB, improve waste water in sulfate reduction efficiency；
Desulfurizer, the top of the reduction apparatus is connected, for effectively entering to caused waste gas during micro-reduction
Row desulfurization process；
PRB devices, for effectively realizing the removal of heavy metal in waste water；
PH regulating reservoirs, for realizing that the pH of processed waste water is adjusted so that processed waste water pH is stable in zone of reasonableness；
Wherein, for sedimentation basin, reduction apparatus, PRB devices and pH regulating reservoirs, between each device by water guide guard system successively,
And the pumping system in water guide guard system realizes olderly flowage of the liquid between different device；
The material selection of sedimentation basin is concrete, and horizontal and vertical seepage control is done inside sedimentation basin and is handled, impervious material HDPE
Antiseepage film, antiseepage film thickness >=2mm, the side bottom of sedimentation basin set PVC oral siphons, and PVC oral siphons are connected with the first pump；
Reduction apparatus side is connected by the first aqueduct with sedimentation basin, and top is provided with strain addition port, and upper end passes through the
One unidirectional airway tube is connected with desulfurizer, and the end of the suction waste water of the first aqueduct has the first nylon gauze integument,
First aqueduct is additionally provided with the second pump；
Desulfurizer bottom connects the first unidirectional airway tube, and upside sets the second unidirectional airway tube to exclude gas, desulfurizer
Packing material selects iron oxide, and Particle size requirements are in the range of 0.6-2.4mm；
PRB devices side is connected by the second aqueduct with reduction apparatus, and downside is connected by the 3rd aqueduct and pH regulating reservoirs
Connect, the second aqueduct is additionally provided with the 3rd pump, and the upper end of the 3rd aqueduct is enclosed with the second nylon gauze integument, PRB devices
Interior packing material is followed successively by quartz sand layer, heavy-metal adsorption material layer and quartz sand layer, thickness proportion 1 from top to bottom:8:1,
Heavy-metal adsorption material is volume ratio 1:2 activated carbons being thoroughly mixed and Zero-valent Iron.
2. the biochemistry treatment device of heavy metal pollution of mine acid waste water according to claim 1, it is characterised in that：
The material selection of pH regulating reservoirs is concrete, and horizontal and vertical seepage control is done inside pH regulating reservoirs and is handled, impervious material is
HDPE antiseepage films, antiseepage film thickness >=2mm, the side bottom of pH regulating reservoirs set the 4th aqueduct, and the 4th aqueduct is also set up
Water guide mouth valve.
3. a kind of biochemistry treatment device of heavy metal pollution of mine acid waste water according to claim 1 or 2 is to ore deposit
The method that mountain heavy metal pollution acid waste water is disposed, comprises the following steps：
(1) SRB (sulfate reducing bacteria) bacterial screening：Isolated and purified by culture medium, the efficient sulfate in culture screening native country
Reducing bacteria；
(2) wastewater sedimentation：Heavy metal pollution of mine acid waste water, by preliminary sedimentation, is gone by the first pumped to sedimentation basin
Except solid impurity；Start the second pump, waste liquid is pumped into reduction apparatus；
(3) strain is inoculated with：Strain is inoculated with by strain adding mouth and finished into heavy metal pollution acid wastewater in mine, strain addition
Seal strain adding mouth；
(4) sulfate reduction：SRB bacterium are utilized to sulphur in heavy metal pollution of mine acid waste water in confined space after strain inoculation
Hydrochlorate carries out reduction treatment；
(5) exhuast gas desulfurization：Caused waste gas is voluntarily carried out by unidirectional airway tube into desulfurizer in sulfate-reducing process
Desulfurization process；
(6) PRB is filtered：Start the 3rd pump after the completion of sulfate reduction, waste liquid is pumped into PRB devices is carried out at heavy metals removal
Reason；
(7) pH is adjusted：Filtrate pH is adjusted as pH adjusting agent using solution so that the pH for the treatment of fluid 6.8-7.2 it
Between；
(8) qualified discharge is monitored：Opening water guide mouth valve, monitoring floss hole effluent quality, it is main monitor thing be sulfide,
Arsenic, lead, copper, zinc, chromium and cadmium, safety dumping is carried out after handling wastewater to reach standard；Below standard waste water reenters step (2) and located again
Reason.
4. according to the method for claim 3, it is characterised in that：
Include in each step of this method one or more of following：
The selection requirements of SRB strains are in step (1)：From mine mining area native country strain, carry out enrichment culture, isolate and purify,
Filter out efficient SRB strains；And strain idenfication is carried out to the strain of screening；
Time >=20min of precipitation of the waste water in sedimentation basin in step (2)；
The inoculation dosage of strain is 3.5-4.0g/L in step (3)；
Sulfate sulfate-reducing process condition is in step (4)：Waste liquid seal time >=24h after strain inoculation, temperature adjusting
At 15-40 DEG C；
Exhuast gas desulfurization is in step (5)：Using dry desulfurizing process, desulfurizing agent selects iron oxide, and the Particle size requirements of desulfurizing agent exist
In the range of 0.6-2.4mm；
PH adjusting agent is 10%NaHCO in step (7)3Solution.
5. according to the method for claim 4, it is characterised in that：
The reference standard of the monitoring qualified discharge of waste liquid is in step (8)《Water environment quality standard》(GB3838-2002)V
Class water standard, the main thing that monitors is sulfide, arsenic, lead, copper, zinc, chromium and cadmium, and safety dumping is carried out after up to standard；It is below standard useless
Water reenters step (2) and handled again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410262287.5A CN104071945B (en) | 2014-06-13 | 2014-06-13 | A kind of processing unit and its method of mine heavy-metal acid waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410262287.5A CN104071945B (en) | 2014-06-13 | 2014-06-13 | A kind of processing unit and its method of mine heavy-metal acid waste water |
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105254023A (en) * | 2015-11-26 | 2016-01-20 | 中国科学院重庆绿色智能技术研究院 | Integrated device for treating acid mine wastewater and process method |
| CN108017189A (en) * | 2017-10-25 | 2018-05-11 | 株洲冶炼集团股份有限公司 | A kind of high heavy metal containing wastewater treatment of highly acid containing arsenic without in dangerous waste with slag technique |
| CN107986499B (en) * | 2017-12-21 | 2023-02-28 | 中国地质大学（武汉） | Pretreatment device and method for acidic wastewater |
| CN110280214A (en) * | 2019-06-27 | 2019-09-27 | 西安建筑科技大学 | A kind of permeable coefficient tensor composite material and preparation method and application |
| CN110563249A (en) * | 2019-08-16 | 2019-12-13 | 安徽省地质矿产勘查局321地质队 | Biological treatment system and method for acidic mining wastewater |
| CN110734145A (en) * | 2019-11-28 | 2020-01-31 | 云南大学 | ecological wetland system with bodies of ore-collecting mountain wastewater treatment and plant residue treatment and use method thereof |
| CN111252999A (en) * | 2019-12-17 | 2020-06-09 | 安徽科技学院 | Device and method for treating coal mine acidic wastewater by using coal gangue |
| CN112028382A (en) * | 2020-07-07 | 2020-12-04 | 衡阳师范学院 | Heavy metal acidic wastewater treatment system and treatment method |
| CN112194327B (en) * | 2020-10-19 | 2022-11-08 | 张家港市五湖新材料技术开发有限公司 | Mine acidic wastewater treatment process |
| CN112546532B (en) * | 2020-12-25 | 2021-10-29 | 昆明理工大学 | Method and device for passivating heavy metals in tailings by gas-solid phase vulcanization crystallization-microcapsule |
| CN112830635B (en) * | 2021-01-19 | 2022-05-17 | 吉林大学 | Physical, chemical and biological combined treatment device and method for acidic wastewater |
| CN112915559A (en) * | 2021-03-26 | 2021-06-08 | 西安理工大学 | Conductive film photo-thermal evaporation concentration device and method for treating wastewater by using same |
| CN115432890B (en) * | 2022-09-21 | 2024-01-23 | 无锡市道格环保科技有限公司 | Treatment device and method for reducing pollutant emission in chromium-containing metal ion wastewater |
| CN116425318B (en) * | 2023-03-24 | 2023-09-22 | 生态环境部南京环境科学研究所 | Treatment device for treating mine acidic wastewater by using activated carbon loaded microorganisms |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103265141A (en) * | 2013-04-22 | 2013-08-28 | 安徽工程大学 | Acidic mine waste water treatment system and use method thereof |
| CN103755043A (en) * | 2014-02-21 | 2014-04-30 | 辽宁工程技术大学 | Biological PRB (permeable reactive barrier) system for underground in-situ remediation of coal mine acid wastewater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103265141A (en) * | 2013-04-22 | 2013-08-28 | 安徽工程大学 | Acidic mine waste water treatment system and use method thereof |
| CN103755043A (en) * | 2014-02-21 | 2014-04-30 | 辽宁工程技术大学 | Biological PRB (permeable reactive barrier) system for underground in-situ remediation of coal mine acid wastewater |
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