CN104071945A - Treatment device and treatment method for acid wastewater polluted by mine heavy metals - Google Patents
Treatment device and treatment method for acid wastewater polluted by mine heavy metals Download PDFInfo
- Publication number
- CN104071945A CN104071945A CN201410262287.5A CN201410262287A CN104071945A CN 104071945 A CN104071945 A CN 104071945A CN 201410262287 A CN201410262287 A CN 201410262287A CN 104071945 A CN104071945 A CN 104071945A
- Authority
- CN
- China
- Prior art keywords
- waste water
- heavy metal
- mine
- aqueduct
- bacterial classification
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention discloses a treatment device and a treatment method for acid wastewater polluted by mine heavy metals. By virtue of the treatment device, liquid can flow among a sedimentation tank, a reduction device, a desulphurization device, a PRB (Permeable Reactive Barrier) device and a pH regulating tank through a pump system and a water guide pipe system, so that the reduction of sulfate in the wastewater, desulfurization of the wastewater, removal of heavy metal pollution and the pH regulation of the wastewater are achieved. The treatment device and the treatment method have the advantages of simple process, simple operation, low cost, high efficiency and capability of realizing large-scale and engineering application of treatment of acid wastewater polluted by the mine heavy metals; meanwhile, the pollutants are placed in a relatively closed space in the whole technological process, so that the secondary pollution in the pollution treatment process can be effectively avoided, thus the treatment device and the treatment method can be widely applied to the safe treatment of acid wastewater polluted by different types of mine heavy metals, and the pollution caused by the heavy metals such as arsenic, lead, copper, zinc, chrome, cadmium and the like in the wastewater can be effectively removed.
Description
Technical field
The present invention relates to ecology and field of Environment Protection, specifically, relate to a kind of biological chemistry treatment unit and method of disposal to heavy metal pollution of mine acid waste water of heavy metal pollution of mine acid waste water.
Background technology
Along with the continuous exploitation exploitation of China's mine resources, the bulk deposition of the mine tailings such as coal gangue becomes important environmental problem.The mine tailing that current mining exploitation produces according to statistics adds up up to hundred million tons of 60-100, and has caused thus a series of geologic Environment Problem In.Wherein heavy metal pollution of mine waste water becomes the major hidden danger of current mine entironment safety, the coal gangue that particularly contains a large amount of sulphur, because pyritous oxidation has produced a large amount of acid waste water, simultaneously, acidic conditions has accelerated to be in mine tailing the dissolving of passivation state heavy metal, therefore, mine wastewater main manifestations be pH value lower, containing the vitriol of high density and the heavy metal ion of solubility.
Microbiological factor is also the important factor that heavy metal pollution of mine acid waste water produces.SRB is a kind of of anaerobic bacterium, and be distributed widely in soil and water body, it can utilize organism in environment as carbon source, and utilize the hydrogen producing in bacterial biof iotalm, sulfate reduction is become to hydrogen sulfide, it produces the pH reduction that individual hydrogen sulfide can make water body simultaneously, and pH environment on the low side can make bacterial metabolism effect strengthen, thereby forms a kind of vicious cycle.Therefore the improvement of heavy metal pollution of mine acid waste water is to remove the element sulphur in water body environment at all.
Current, the treatment process of acid wastewater in mine is mainly divided into 2 kinds of neutralisation and microbial methods.Neutralisation is the most frequently used method, be in oxytropism waste water, to add alkaline neutraliser (soda-lime, slaked lime, calcium carbonate, blast furnace slag, rhombspar etc.), make on the one hand the pH value of waste water improve, the heavy metal ion in waste water and neutralizing agent generation chemical reaction form precipitation of hydroxide, remove the heavy metal ion in water body on the other hand.In order to improve treatment effect, the common use that combines with oxidation or aeration process (as changed Fe2+ into Fe3+) of neutralisation.Microbial method is the sulphur cycle principle of utilizing occurring in nature, utilize sulphate reducing bacteria by the bioreduction of alienation vitriol, sulfate reduction is become to H2S, and utilize certain micro-organisms that H2S is oxidized to elemental sulfur, heavy metal ion " accumulation " in microbe is got up simultaneously.Along with the progress of science, the treatment technology of acid wastewater in mine constantly obtains new development, as wetland facture, microbial film adsorption treatment method and biochemical material filtration method etc.
The conventional treatment method of heavy metal wastewater thereby mainly comprises: chemical precipitation method, ion exchange method, evaporation concentration method, electrolytic process, gac and silica gel adsorption and membrane separation process etc., but these methods exist remove thoroughly, the shortcoming such as somewhat expensive, generation toxic sludge or other waste materials.
For the regulation and control of acid wastewater in mine pH and the research of mine wastewater Heavy Metal Pollution Control, make some progress both at home and abroad at present, yet the singularity of mine sewage has been doomed its acidifying and heavy metal contamination deposit and be difficult to by single means, the water quality of mine wastewater to be improved thoroughly.
Therefore, how by the effective combination of Heavy Metal Pollution Control technique of waste water acid-alkali accommodation technique and waste water, fundamentally solve thoroughly acidifying and the heavy metal contamination of ore deposit waste water, by rational technical matters and equipment, effectively avoiding secondary pollution to produce, is the key problem in technology of current heavy metal pollution of mine wastewater treatment.
Summary of the invention
The object of the invention is to propose a kind of biological chemistry treatment unit and the method for disposal to heavy metal pollution of mine acid waste water of heavy metal pollution of mine acid waste water, the biological chemical device method of this heavy metal pollution of mine acid waste water is passed through pump system, aqueduct system realizes liquid flowing between different treatment device, waste water passes through settler, reducing apparatus, (reduction of vitriol in waste water is realized in (Permeable Reactive Barrier permeable reactive barrier) device and pH regulator pond to PRB, waste water desulfurization is processed, the pH regulator of heavy metal contamination removal and waste water, also there is desulfurizer, realize desulfurization, acidifying and the heavy metal pollution problem of heavy metal pollution of mine acid waste water have fundamentally been solved.
For reaching this object, the present invention by the following technical solutions:
A biological chemistry treatment unit for heavy metal pollution of mine acid waste water, comprising: settling tank, reducing apparatus, desulfurizer, PRB device and pH regulator pond,
Settling tank, for the solid impurity of waste water is carried out to precipitate and separate processing, improves the technological effect of subsequent technique;
Reducing apparatus, for the anaerobic environment of SBR Fast-propagation is provided, improves the reduction efficiency of vitriol in waste water;
Desulfurizer, connects the top of described reducing apparatus, for the waste gas effectively micro-reduction process being produced, carries out desulfurization processing;
PRB device, for effectively realizing the removal of heavy metal in waste water;
PH regulator pond, for realizing the pH regulator of processed waste water, makes processed waste water pH be stabilized in zone of reasonableness;
Wherein, for settling tank, reducing apparatus, PRB device and pH regulator pond, between each device, by aqueduct system and the pump system in aqueduct system successively, realize liquid flowing in order between different device.
Preferably, the material selection of settling tank is concrete, and settling tank inside will do level and vertical seepage control is processed, and impervious material is HDPE anti seepage membrane, anti seepage membrane thickness >=2mm, and the bottom, side of settling tank arranges PVC inhalent siphon, and PVC inhalent siphon is connected with the first pump.
Preferably, reducing apparatus side is connected with settling tank by the first aqueduct, top is provided with bacterial classification and adds port, upper end is connected with desulfurizer by the first unidirectional tracheae, the end of the suction waste water of the first aqueduct has the first nylon gauze integument, and the first aqueduct is also provided with the second pump.
Preferably, desulfurizer bottom connects the first unidirectional tracheae, and upside arranges the second unidirectional tracheae to get rid of gas, and desulfurizer packing material is selected ferric oxide, and particle diameter requires within the scope of 0.6-2.4mm.
Preferably, PRB device side is connected with reducing apparatus by the second aqueduct, downside is connected with pH regulator pond by the 3rd aqueduct, the second aqueduct is also provided with the 3rd pump, the upper end of the 3rd aqueduct is enclosed with the second nylon gauze integument, in PRB device, packing material is followed successively by quartz sand layer, heavy metal adsorption material layer and quartz sand layer from top to bottom, and thickness proportion is 1:8:1, and heavy metal adsorption material is gac and the Zero-valent Iron that volume ratio 1:2 is fully uniformly mixed.
Preferably, the material selection in pH regulator pond is concrete, and inside, pH regulator pond will do level and vertical seepage control is processed, impervious material is HDPE anti seepage membrane, anti seepage membrane thickness >=2mm, the bottom, side in pH regulator pond arranges the 4th aqueduct, and the 4th aqueduct also arranges water guide mouth valve.
Further, the invention also discloses a kind of method that biological chemistry treatment unit that utilizes above-mentioned heavy metal pollution of mine acid waste water is disposed heavy metal pollution of mine acid waste water, comprise the steps:
(1) SRB (sulphate reducing bacteria) bacterial screening: by substratum separation and purification, cultivate the High Efficient Sulfate-reducing Bacteria in screening native country;
(2) wastewater sedimentation: heavy metal pollution of mine acid waste water is drawn to settling tank by the first pump, through preliminary sedimentation, removes the solid impurities such as silt; Start the second pump, waste liquid is pumped into reducing apparatus;
(3) bacterial classification inoculation: add mouth by bacterial classification bacterial classification is inoculated into heavy metal contamination acid wastewater in mine, bacterial classification adds complete sealing bacterial classification and adds mouth;
(4) sulfate reduction: utilize SRB bacterium to reduce processing to vitriol in heavy metal pollution of mine acid waste water after bacterial classification inoculation in enclosed space;
(5) waste-gas desulfurization: the waste gas producing in sulfate-reducing process enters desulfurizer by unidirectional tracheae voluntarily and carries out desulfurization processing;
(6) PRB filters: startup the 3rd pump after sulfate reduction completes, pumps into PRB device by waste liquid and carry out heavy metal Transformatin;
(7) pH regulator: adopt solution as pH adjusting agent, filtrate pH to be regulated, make the pH for the treatment of solution between 6.8-7.2;
(8) monitoring qualified discharge: opening water guide mouth valve, monitoring discharge outlet effluent quality, mainly monitoring thing is sulfide, arsenic, lead, copper, zinc, chromium and cadmium, after processing wastewater to reach standard, can carry out safety dumping; Below standard waste water reenters step (2) and again processes.
Preferably, in each step of present method, comprise one or more in following:
In step (1), the selection requirements of SBR bacterial classification is: select native country, mining area, mine bacterial classification, carry out enrichment culture, separation and purification, filter out efficient SBR bacterial classification; And the bacterial classification of screening is carried out to strain identification;
Time >=the 20min of the precipitation of waste water in settling tank in step (2);
In step (3), the inoculation consumption of bacterial classification is 3.5-4.0g/L;
In step (4), vitriol sulfate-reducing process condition is: waste liquid seal time >=24h after bacterial classification inoculation, and temperature adjusting is at 15-40 ℃;
In step (5), waste-gas desulfurization is: adopt dry type desulfurizing method, sweetening agent is selected ferric oxide, and the particle diameter of sweetening agent requires within the scope of 0.6-2.4mm;
PRB material selection gac and Zero-valent Iron in step (6), its volume ratio is 1:2, hybrid mode is for being fully uniformly mixed;
In step (7), pH adjusting agent is 10%NaHCO
3solution.
Further preferably, in step (8), the reference standard of the monitoring qualified discharge of waste liquid is < < water environment quality standard > > (GB3838-2002) V class water quality standard, main monitoring thing is sulfide, arsenic, lead, copper, zinc, chromium and cadmium etc., can carry out safety dumping after up to standard; Below standard waste water reenters step (2) and again processes.
The biological chemistry treatment unit of heavy metal pollution of mine acid waste water of the present invention is realized liquid flowing between different treatment device by pump system, aqueduct system, waste water is realized the pH regulator of reduction, waste water desulfurization processing, heavy metal contamination removal and the waste water of vitriol in waste water by settling tank, reducing apparatus, desulfurizer, PRB device and pH regulator pond, fundamentally solved acidifying and the heavy metal pollution problem of heavy metal pollution of mine acid waste water.
The treatment process of heavy metal pollution of mine acid waste water of the present invention has changed traditional heavy metal contamination acid wastewater in mine processing mode, it is reasonably processed acid wastewater in mine, desulfurization processing combines together with technique process that a plurality of complexity are processed in heavy metal contamination, has effectively solved the single processing mode drawback that current techniques is only confined to Disposal of Acidic Mining Waste Water and the improvement of mine heavy metal wastewater thereby; Meanwhile, the present invention has solved from core the water acidification problem that current acid wastewater in mine vitriol causes.The pH that can effectively realize acid wastewater in mine by this treatment process technology regulates and controls, can effectively remove the heavy metal contaminations such as arsenic, lead, copper, zinc, chromium and cadmium in waste water, processed waste water reaches < < water environment quality standard > > (GB3838-2002) V class water quality for the requirement of the heavy metal content limit values such as sulfide, arsenic, lead, copper, zinc, chromium and cadmium simultaneously.
Processing sequence of the present invention is simple, it is simple and easy to operate, cost is low, efficiency is high, can realize the mass-producing that heavy metal pollution of mine acid waste water administers applies with through engineering approaches; simultaneously; whole technical process pollutent is all in relative enclosed space; effectively avoid the generation of secondary pollution in Pollution abatement process, can be widely used in the safe disposal of dissimilar heavy metal pollution of mine acid waste water.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the biological chemistry treatment unit of heavy metal pollution of mine acid waste water according to a particular embodiment of the invention;
Fig. 2 utilizes the biological chemistry treatment unit of heavy metal pollution of mine acid waste water of the present invention heavy metal pollution of mine acid waste water to be carried out to the schema of the method for safe disposal.
The technical characterictic that Reference numeral in figure refers to is respectively:
1, PVC inhalent siphon; 2, the first pump; 3. the first nylon gauze integument; 4, settling tank; 5, the first aqueduct; 6, the second pump; 7, reducing apparatus; 8, bacterial classification adds port; 9, the first unidirectional tracheae; 10, desulfurizer; 11, the second unidirectional tracheae; 12, the 3rd pump; 13, the second aqueduct; 14, PRB device; 15, the second nylon gauze integument; 16, the 3rd aqueduct; 17, pH regulator pond; 18, water guide mouth valve; 19, the 4th aqueduct 4.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, in accompanying drawing, only show part related to the present invention but not entire infrastructure.
Embodiment 1:
Referring to Fig. 1, the block diagram of the biological chemistry treatment unit of heavy metal pollution of mine acid waste water is according to a particular embodiment of the invention disclosed.
The biological chemistry treatment unit of described heavy metal pollution of mine acid waste water comprises: settling tank 4, reducing apparatus 7, desulfurizer 10, PRB device 14 and pH regulator pond 17.
Settling tank, for the solid impurity of waste water is carried out to precipitate and separate processing, improves the technological effect of subsequent technique;
Reducing apparatus, for the anaerobic environment of SBR Fast-propagation is provided, improves the reduction efficiency of vitriol in waste water;
Desulfurizer, connects the top of described reducing apparatus, for the waste gas effectively micro-reduction process being produced, carries out desulfurization processing;
PRB device, for effectively realizing the removal of heavy metal in waste water;
PH regulator pond, for realizing the pH regulator of processed waste water, makes processed waste water pH be stabilized in zone of reasonableness;
Wherein, for settling tank, reducing apparatus, PRB device and pH regulator pond, between each device, by aqueduct system and the pump system in aqueduct system successively, realize liquid flowing in order between different device.
Preferably, the material selection of settling tank is concrete, and settling tank inside will do level and vertical seepage control is processed, and impervious material is HDPE anti seepage membrane, anti seepage membrane thickness >=2mm, and the bottom, side of settling tank arranges PVC inhalent siphon 1, and PVC inhalent siphon 1 is connected with the first pump 2.
Preferably, reducing apparatus side is connected with settling tank by the first aqueduct 5, top is provided with bacterial classification and adds port 8, upper end is connected with desulfurizer by the first unidirectional tracheae 9, the end of the suction waste water of the first aqueduct 5 has the first nylon gauze integument 3, the first aqueducts 5 and is also provided with the second pump 6.
Preferably, desulfurizer bottom connects the first unidirectional tracheae 9, and upside arranges the second unidirectional tracheae 11 to get rid of gas, and desulfurizer packing material is selected ferric oxide, and particle diameter requires within the scope of 0.6-2.4mm.
Preferably, PRB device side is connected with reducing apparatus by the second aqueduct 13, downside is connected with pH regulator pond by the 3rd aqueduct 16, the second aqueduct 13 is also provided with the 3rd pump 12, the 3rd aqueduct 16 upper ends are enclosed with the second nylon gauze integument 15, in PRB device, packing material is followed successively by quartz sand layer, heavy metal adsorption material layer and quartz sand layer from top to bottom, and thickness proportion is 1:8:1, and heavy metal adsorption material is gac and the Zero-valent Iron that volume ratio 1:2 is fully uniformly mixed.
Preferably, the material selection in pH regulator pond is concrete, and inside, pH regulator pond will do level and vertical seepage control is processed, and impervious material is HDPE anti seepage membrane, anti seepage membrane thickness >=2mm.The bottom, side in pH regulator pond arranges the 4th aqueduct 19, the four aqueducts 19 water guide mouth valve 18 is also set.
Embodiment 2:
Further, the invention also discloses a kind of biological chemistry treatment unit of above-mentioned heavy metal pollution of mine acid waste water that utilizes and heavy metal pollution of mine acid waste water is carried out to the method for safe disposal, comprise the steps:
(1) SRB (sulphate reducing bacteria) bacterial screening: by substratum separation and purification, cultivate the High Efficient Sulfate-reducing Bacteria in screening native country;
(2) wastewater sedimentation: heavy metal pollution of mine acid waste water is drawn to settling tank by the first pump, through preliminary sedimentation, removes the solid impurities such as silt; Start the second pump, waste liquid is pumped into reducing apparatus;
(3) bacterial classification inoculation: add mouth by bacterial classification bacterial classification is inoculated into heavy metal contamination acid wastewater in mine, bacterial classification adds complete sealing bacterial classification and adds mouth;
(4) sulfate reduction: utilize SRB bacterium to reduce processing to vitriol in heavy metal pollution of mine acid waste water after bacterial classification inoculation in enclosed space;
(5) waste-gas desulfurization: the waste gas producing in sulfate-reducing process enters desulfurizer by unidirectional tracheae voluntarily and carries out desulfurization processing;
(6) PRB filters: startup the 3rd pump after sulfate reduction completes, pumps into PRB device by waste liquid and carry out heavy metal Transformatin;
(7) pH regulator: adopt solution as pH adjusting agent, filtrate pH to be regulated, make the pH for the treatment of solution between 6.8-7.2;
(8) monitoring qualified discharge: opening water guide mouth valve, monitoring discharge outlet effluent quality, mainly monitoring thing is sulfide, arsenic, lead, copper, zinc, chromium and cadmium, after processing wastewater to reach standard, can carry out safety dumping; Below standard waste water reenters step (2) and again processes.
Preferably, in each step of present method, comprise one or more in following:
In step (1), the selection requirements of SBR bacterial classification is: select native country, mining area, mine bacterial classification, carry out enrichment culture, separation and purification, filter out efficient SBR bacterial classification; And the bacterial classification of screening is carried out to strain identification.
Time >=the 20min of the precipitation of waste water in settling tank in step (2).
In step (3), the inoculation consumption of bacterial classification is 3.5-4.0g/L.
In step (4), vitriol sulfate-reducing process condition is: waste liquid seal time >=24h after bacterial classification inoculation, temperature adjusting is at 15-40 ℃.
In step (5), waste-gas desulfurization is: adopt dry type desulfurizing method, sweetening agent is selected ferric oxide, and the particle diameter of sweetening agent requires within the scope of 0.6-2.4mm.
PRB material selection gac and Zero-valent Iron in step (6), its volume ratio is 1:2, hybrid mode is for being fully uniformly mixed.
In step (7), pH adjusting agent is 10%NaHCO
3solution.
In step (8), the reference standard of the monitoring qualified discharge of waste liquid is < < water environment quality standard > > (GB3838-2002) V class water quality standard, main monitoring thing is sulfide, arsenic, lead, copper, zinc, chromium and cadmium etc., can carry out safety dumping after up to standard; Below standard waste water reenters step (2) and again processes.
Before and after heavy metal pollution of mine acid waste water reason, water quality contrast sees the following form.
Table 1: heavy metal pollution of mine acid waste water is processed front and back water pollution substrate concentration contrast table
Table 2: heavy metal pollution of mine acid waste water is processed front and back water quality pH contrast table
Visible, adopt the present invention to process heavy metal pollution of mine acid waste water, through processing, sulfide, arsenic, lead, copper, zinc, chromium and cadmium all can reach < < water environment quality standard > > (GB3838-2002) V class water quality 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 be PVC aqueduct, and other suitable materials are made.
The biological chemistry treatment unit of heavy metal pollution of mine acid waste water of the present invention is realized liquid flowing between different treatment device by pump system, aqueduct system, waste liquid is realized the pH regulator of reduction, waste liquid desulfurization processing, heavy metal contamination removal and the waste liquid of vitriol in waste liquid by settling tank, reducing apparatus, desulfurizer, PRB device and pH regulator pond, fundamentally solved acidifying and the heavy metal pollution problem of heavy metal pollution of mine acid waste water.The Main Function of settling tank is that the solid impurity in waste liquid is carried out to precipitate and separate processing, improves the technological effect of subsequent technique; Reducing apparatus mainly provides the anaerobic environment of SBR Fast-propagation, improves the reduction efficiency of vitriol in waste liquid; Desulfurizer can effectively carry out desulfurization processing to the waste gas producing in micro-reduction process; PRB device can effectively be realized the removal of heavy metal in waste liquid; The pH regulator of processed waste water can be realized in pH regulator pond, makes processed waste water pH be stabilized in zone of reasonableness.Present method has changed traditional heavy metal contamination acid wastewater in mine processing mode, it is reasonably processed acid wastewater in mine, desulfurization processing combines together with technique process that a plurality of complexity are processed in heavy metal contamination, has effectively solved the single processing mode drawback that current techniques is only confined to Disposal of Acidic Mining Waste Water and the improvement of mine heavy metal wastewater thereby; Meanwhile, this technology has solved from core the water acidification problem that current acid wastewater in mine vitriol causes.The pH that can effectively realize acid wastewater in mine by this treatment process technology regulates and controls, can effectively remove the heavy metal contaminations such as arsenic, lead, copper, zinc, chromium and cadmium in waste water, after processing, waste liquid reaches < < water environment quality standard > > (GB3838-2002) V class water quality for the requirement of the heavy metal content limit values such as sulfide, arsenic, lead, copper, zinc, chromium and cadmium simultaneously.Present method processing sequence is simple, it is simple and easy to operate, cost is low, efficiency is high, can realize the mass-producing that heavy metal pollution of mine acid waste water administers applies with through engineering approaches; simultaneously; whole technical process pollutent is all in relative enclosed space; effectively avoid the generation of secondary pollution in Pollution abatement process, can be widely used in the safe disposal of dissimilar heavy metal pollution of mine acid waste water.
Above content is in conjunction with concrete preferred implementation further description made for the present invention; can not assert that the specific embodiment of the present invention only limits to this; for general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; can also make some simple deduction or replace, all should be considered as belonging to the present invention and determine protection domain by submitted to claims.
Claims (9)
1. a biological chemistry treatment unit for heavy metal pollution of mine acid waste water, comprising: settling tank, reducing apparatus, desulfurizer, PRB device and pH regulator pond,
Settling tank, for the solid impurity of waste water is carried out to precipitate and separate processing, improves the technological effect of subsequent technique;
Reducing apparatus, for the anaerobic environment of SBR Fast-propagation is provided, improves the reduction efficiency of vitriol in waste water;
Desulfurizer, connects the top of described reducing apparatus, for the waste gas effectively micro-reduction process being produced, carries out desulfurization processing;
PRB device, for effectively realizing the removal of heavy metal in waste water;
PH regulator pond, for realizing the pH regulator of processed waste water, makes processed waste water pH be stabilized in zone of reasonableness;
Wherein, for settling tank, reducing apparatus, PRB device and pH regulator pond, between each device, by aqueduct system and the pump system in aqueduct system successively, realize liquid flowing in order between different device.
2. the biological chemistry treatment unit of heavy metal pollution of mine acid waste water according to claim 1, is characterized in that:
The material selection of settling tank is concrete, and settling tank inside will do level and vertical seepage control is processed, and impervious material is HDPE anti seepage membrane, anti seepage membrane thickness >=2mm, and the bottom, side of settling tank arranges PVC inhalent siphon, and PVC inhalent siphon is connected with the first pump.
3. the biological chemistry treatment unit of heavy metal pollution of mine acid waste water according to claim 1, is characterized in that:
Reducing apparatus side is connected with settling tank by the first aqueduct, top is provided with bacterial classification and adds port, upper end is connected with desulfurizer by the first unidirectional tracheae, and the end of the suction waste water of the first aqueduct has the first nylon gauze integument, and the first aqueduct is also provided with the second pump.
4. the biological chemistry treatment unit of heavy metal pollution of mine acid waste water according to claim 1, is characterized in that:
Desulfurizer bottom connects the first unidirectional tracheae, and upside arranges the second unidirectional tracheae to get rid of gas, and desulfurizer packing material is selected ferric oxide, and particle diameter requires within the scope of 0.6-2.4mm.
5. the biological chemistry treatment unit of heavy metal pollution of mine acid waste water according to claim 1, is characterized in that:
PRB device side is connected with reducing apparatus by the second aqueduct, downside is connected with pH regulator pond by the 3rd aqueduct, the second aqueduct is also provided with the 3rd pump, the upper end of the 3rd aqueduct is enclosed with the second nylon gauze integument, in PRB device, packing material is followed successively by quartz sand layer, heavy metal adsorption material layer and quartz sand layer from top to bottom, thickness proportion is 1:8:1, and heavy metal adsorption material is gac and the Zero-valent Iron that volume ratio 1:2 is fully uniformly mixed.
6. the biological chemistry treatment unit of heavy metal pollution of mine acid waste water according to claim 1, is characterized in that:
The material selection in pH regulator pond is concrete, inside, pH regulator pond will do level and vertical seepage control is processed, and impervious material is HDPE anti seepage membrane, anti seepage membrane thickness >=2mm, the bottom, side in pH regulator pond arranges the 4th aqueduct, and the 4th aqueduct also arranges water guide mouth valve.
7. a method of according to the biological chemistry treatment unit of the heavy metal pollution of mine acid waste water described in any one in claim 1-6, heavy metal pollution of mine acid waste water being disposed, comprises the steps:
(1) SRB (sulphate reducing bacteria) bacterial screening: by substratum separation and purification, cultivate the High Efficient Sulfate-reducing Bacteria in screening native country;
(2) wastewater sedimentation: heavy metal pollution of mine acid waste water is drawn to settling tank by the first pump, through preliminary sedimentation, removes the solid impurities such as silt; Start the second pump, waste liquid is pumped into reducing apparatus;
(3) bacterial classification inoculation: add mouth by bacterial classification bacterial classification is inoculated into heavy metal contamination acid wastewater in mine, bacterial classification adds complete sealing bacterial classification and adds mouth;
(4) sulfate reduction: utilize SRB bacterium to reduce processing to vitriol in heavy metal pollution of mine acid waste water after bacterial classification inoculation in enclosed space;
(5) waste-gas desulfurization: the waste gas producing in sulfate-reducing process enters desulfurizer by unidirectional tracheae voluntarily and carries out desulfurization processing;
(6) PRB filters: startup the 3rd pump after sulfate reduction completes, pumps into PRB device by waste liquid and carry out heavy metal Transformatin;
(7) pH regulator: adopt solution as pH adjusting agent, filtrate pH to be regulated, make the pH for the treatment of solution between 6.8-7.2;
(8) monitoring qualified discharge: opening water guide mouth valve, monitoring discharge outlet effluent quality, mainly monitoring thing is sulfide, arsenic, lead, copper, zinc, chromium and cadmium, after processing wastewater to reach standard, can carry out safety dumping; Below standard waste water reenters step (2) and again processes.
8. according to claim 7, it is characterized in that:
In each step of present method, comprise one or more in following:
In step (1), the selection requirements of SBR bacterial classification is: select native country, mining area, mine bacterial classification, carry out enrichment culture, separation and purification, filter out efficient SBR bacterial classification; And the bacterial classification of screening is carried out to strain identification;
Time >=the 20min of the precipitation of waste water in settling tank in step (2);
In step (3), the inoculation consumption of bacterial classification is 3.5-4.0g/L;
In step (4), vitriol sulfate-reducing process condition is: waste liquid seal time >=24h after bacterial classification inoculation, and temperature adjusting is at 15-40 ℃;
In step (5), waste-gas desulfurization is: adopt dry type desulfurizing method, sweetening agent is selected ferric oxide, and the particle diameter of sweetening agent requires within the scope of 0.6-2.4mm;
PRB material selection gac and Zero-valent Iron in step (6), its volume ratio is 1:2, hybrid mode is for being fully uniformly mixed;
In step (7), pH adjusting agent is 10%NaHCO
3solution.
9. method according to claim 8, is characterized in that:
In step (8), the reference standard of the monitoring qualified discharge of waste liquid is < < water environment quality standard > > (GB3838-2002) V class water quality standard, main monitoring thing is sulfide, arsenic, lead, copper, zinc, chromium and cadmium etc., can carry out safety dumping after up to standard; Below standard waste water reenters step (2) and again processes.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104071945A true CN104071945A (en) | 2014-10-01 |
| CN104071945B CN104071945B (en) | 2017-11-14 |
Family
ID=51593606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410262287.5A Expired - Fee Related CN104071945B (en) | 2014-06-13 | 2014-06-13 | A kind of processing unit and its method of mine heavy-metal acid waste water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104071945B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107986499A (en) * | 2017-12-21 | 2018-05-04 | 中国地质大学（武汉） | The pretreatment unit and method of a kind of acid waste water |
| 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 |
| 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 |
| CN112194327A (en) * | 2020-10-19 | 2021-01-08 | 张家港市五湖新材料技术开发有限公司 | Mine acidic wastewater treatment process |
| CN112546532A (en) * | 2020-12-25 | 2021-03-26 | 昆明理工大学 | Method and device for passivating heavy metals in tailings by gas-solid phase vulcanization crystallization-microcapsule |
| CN112830635A (en) * | 2021-01-19 | 2021-05-25 | 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 |
| CN115432890A (en) * | 2022-09-21 | 2022-12-06 | 无锡市道格环保科技有限公司 | Treatment device and method for reducing pollutant discharge in chromium-containing metal ion wastewater |
| CN116425318A (en) * | 2023-03-24 | 2023-07-14 | 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2014
- 2014-06-13 CN CN201410262287.5A patent/CN104071945B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107986499A (en) * | 2017-12-21 | 2018-05-04 | 中国地质大学（武汉） | The pretreatment unit and method of a kind of acid waste water |
| 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 |
| CN112194327A (en) * | 2020-10-19 | 2021-01-08 | 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 |
| CN112546532A (en) * | 2020-12-25 | 2021-03-26 | 昆明理工大学 | Method and device for passivating heavy metals in tailings by gas-solid phase vulcanization crystallization-microcapsule |
| CN112830635A (en) * | 2021-01-19 | 2021-05-25 | 吉林大学 | Physical, chemical and biological combined treatment device and method for acidic wastewater |
| 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 |
| CN115432890A (en) * | 2022-09-21 | 2022-12-06 | 无锡市道格环保科技有限公司 | Treatment device and method for reducing pollutant discharge in chromium-containing metal ion wastewater |
| 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 |
| CN116425318A (en) * | 2023-03-24 | 2023-07-14 | 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104071945B (en) | 2017-11-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104071945A (en) | Treatment device and treatment method for acid wastewater polluted by mine heavy metals | |
| Hammack et al. | Treatment of water from an open-pit copper mine using biogenic sulfide and limestone: a feasibility study | |
| Cao et al. | Precipitation of valuable metals from bioleaching solution by biogenic sulfides | |
| Rose et al. | An integrated algal sulphate reducing high rate ponding process for the treatment of acid mine drainage wastewaters | |
| CN101628773B (en) | Treatment process of copper-iron-contained high-concentration acidic mine wastewater | |
| Li et al. | Sulfide removal by simultaneous autotrophic and heterotrophic desulfurization–denitrification process | |
| CN101195859A (en) | Technique for processing low concentration heavy metal sulfate liquor with microorganism method | |
| US20140263043A1 (en) | S/m for biological treatment of wastewater with selenium removal | |
| Schwarz et al. | A membrane-biofilm system for sulfate conversion to elemental sulfur in mining-influenced waters | |
| CN103601262B (en) | A kind of adsorption column method of utilizing waterworks sludge to remove hydrogen sulfide in waste water | |
| CN112174440B (en) | Heavy metal wastewater treatment process | |
| CN103922466A (en) | Culture method of granular nitrosation sludge for treating urban domestic sewage at normal temperature | |
| Virpiranta et al. | Continuous removal of sulfate and metals from acidic mining-impacted waters at low temperature using a sulfate-reducing bacterial consortium | |
| Ňancucheo et al. | New microbiological strategies that enable the selective recovery and recycling of metals from acid mine drainage and mine process waters | |
| CN104773925A (en) | Method for simultaneously treating refuse leachate and acidy mine drainage | |
| Fang et al. | Highly efficient removal of Cu (II), Zn (II), Ni (II) and Fe (II) from electroplating wastewater using sulphide from sulphidogenic bioreactor effluent | |
| CN110052099A (en) | A kind of method of sulfur-containing smoke gas biochemical de-sulfur and sulphur recovery | |
| CN105948254A (en) | Sewage treatment plant and method under action of magnetic field | |
| Fan et al. | Effect of hydraulic retention time and pH on oxidation of ferrous iron in simulated ferruginous acid mine drainage treatment with inoculation of iron-oxidizing bacteria | |
| CN105884030A (en) | Anaerobic-anoxic-aerobic sewage treatment device | |
| Hu et al. | Recovery of copper-dominated resources from copper mine drainage by chemical oxidation and sulfur biocycling: A pilot-scale study | |
| CN105948374A (en) | Automatic sewage treatment device | |
| CN108069562B (en) | A kind of integrated conduct method and device of selenium-containing wastewater | |
| Hu et al. | Recovery of bio‑sulfur and metal resources from mine wastewater by sulfide biological oxidation-alkali flocculation: A pilot-scale study | |
| CN102020377B (en) | Method for treating collophanite positive and reverse flotation beneficiation wastewater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171114 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |