CN105906168B - A kind of mine wastewater recovery and treatment method - Google Patents
A kind of mine wastewater recovery and treatment method Download PDFInfo
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- CN105906168B CN105906168B CN201610495311.9A CN201610495311A CN105906168B CN 105906168 B CN105906168 B CN 105906168B CN 201610495311 A CN201610495311 A CN 201610495311A CN 105906168 B CN105906168 B CN 105906168B
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
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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
- C02F1/52—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
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
Abstract
The invention discloses a kind of mine wastewater recovery and treatment methods, the described method comprises the following steps: coagulation, two stage treatment, tertiary treatment, level Four processing.The present invention continuously can carry out overall treatment to mine wastewater, treatment effeciency is high, speed is fast, not only the acidic materials in waste water are removed, effectively comprehensive cleaning further has been carried out to heavy metal therein, the influence to ambient enviroment and resident living is reduced by non-pollution discharge after the heavy metal processing in waste water into natural environment by the level Four treatment process of classification setting.
Description
Technical field
The invention belongs to waste water treatment field more particularly to a kind of mine wastewater recovery and treatment methods.
Background technique
Mine industry is the pillar industries of the national economy, and during mining and ore processing, forms a large amount of lifes
Produce waste water, including acid wastewater in mine and flotation processing waste water.The acid wastewater in mine wherein generated low, coloration with pH value
Height contains a large amount of heavy metal ion, if can cause great harm to ambient enviroment without processing, lower pH value can make water quality
And soil acidification, cause aquatic animal extinction and crop production reduction, especially heavy metal ion once to enter water body and soil, just
It is difficult to be removed, can be enriched in animal and plant body, and then human body is entered by food chain, and it is long to endanger the period in incubation period,
It is difficult to show in short time.In famous " the eight big public hazards " contamination accident in the whole world, " minamata disease event " and " Itai-itai diseases " event are just
As caused by heavy metal Hg and cadmium, it is therefore necessary to carry out harmless treatment to waste water.
Summary of the invention
It is an object of the invention to overcome problem above of the existing technology, a kind of mine wastewater recovery processing side is provided
Method effectively clears up the harmful substance in mine wastewater, reduces direct pollution of the waste water to natural environment.
To realize above-mentioned technical purpose and the technique effect, the invention is realized by the following technical scheme:
A kind of mine wastewater recovery and treatment method, the described method comprises the following steps:
(1) coagulation: introducing coagulation pond for mine wastewater, and four layers of filtering are arranged in coagulation pond inlet
Net, first layer are set to equally distributed bentonite, the second layer is provided between second layer filter screen between third layer filter screen
It is equipped with equally distributed active carbon, third layer is provided with equally distributed zeolite between the 4th layer of filter screen, in first layer mistake
Strainer and the 4th layer of filter screen outer surface are covered with geotextiles, are equipped with microfiltration membranes in coagulation pond exit, the nanofiltration fenestra
At 0.3~0.5 micron, outlet pressure is controlled in 0.3~0.5MPa for diameter control；
(2) two stage treatment: introducing two stage treatment pond for the waste water after coagulation, is arranged at the both ends in two stage treatment pond
There are cathode plate and anode plate, several cathodic coatings and anode film being alternately placed is provided between cathode plate and anode plate, and two
Grade processing pond outlet end and arrival end are provided with nanofiltration membrane, and the pore size control of the nanofiltration membrane is in 0.1~0.3nm, inlet pressure
Control is in 0.5~0.7MPa；
(3) tertiary treatment: the waste water after two stage treatment is introduced into tertiary treatment pond, is sequentially added in tertiary treatment pond
Aluminium polychloride, polyaluminium sulfate, ferrous sulfate are simultaneously uniformly mixed, and sequentially add polyacrylamide after 20~30 minutes
Amine, lignin derivative and 60~70 DEG C at a temperature of be mixed 10~15 minutes, sodium hydroxide is then added, is filled
Divide and is mixed 5~10 minutes and stands 30~45 minutes；
(4) level Four is handled: waste water after tertiary treatment being introduced into clean water treatment area, which is tertiary treatment pond
Transition region between natural water, in the region in upstream region uniform kind be implanted with duckweed, the wherein planting density control of duckweed
System is implanted with cattail for uniform kind in 20~25 plants/square metre, the region midstream region, and wherein the planting density of cattail is controlled 25
~30 plants/square metre are implanted with reed for uniform kind in the region Xia You of the region, and wherein the planting density of reed is controlled 35~40
Strain/square metre, entire clean water treatment area is evenly equipped with cyanobacteria and green alga.
Further, the aperture of each layer filter screen is identical in the coagulation and is 3~5mm.
Further, the mutual spacing of cathodic coating and anode film is 10~15cm in the two stage treatment.
The beneficial effects of the present invention are:
The present invention continuously can carry out overall treatment to mine wastewater, and treatment effeciency is high, and speed is fast, not only to useless
Acidic materials in water are removed, and have further been carried out effectively comprehensive cleaning to heavy metal therein, have been set by classification
The level Four treatment process set is reduced by non-pollution discharge after the heavy metal processing in waste water into natural environment to ambient enviroment
And the influence of resident living.
Specific embodiment
In order to deepen the understanding of the present invention, the present invention will be described in further detail with reference to the examples below, the embodiment
For explaining only the invention, it is not intended to limit the scope of the present invention..
Embodiment 1:
A kind of mine wastewater recovery and treatment method, the described method comprises the following steps:
(1) coagulation: introducing coagulation pond for mine wastewater, and four layers of filtering are arranged in coagulation pond inlet
Net, first layer are set to equally distributed bentonite, the second layer is provided between second layer filter screen between third layer filter screen
It is equipped with equally distributed active carbon, third layer is provided with equally distributed zeolite between the 4th layer of filter screen, in first layer mistake
Strainer and the 4th layer of filter screen outer surface are covered with geotextiles, are equipped with microfiltration membranes in coagulation pond exit, the nanofiltration fenestra
At 0.3 micron, outlet pressure is controlled in 0.3MPa for diameter control；
(2) two stage treatment: introducing two stage treatment pond for the waste water after coagulation, is arranged at the both ends in two stage treatment pond
There are cathode plate and anode plate, several cathodic coatings and anode film being alternately placed is provided between cathode plate and anode plate, and two
Grade processing pond outlet end and arrival end are provided with nanofiltration membrane, and in 0.1nm, inlet pressure control exists the pore size control of the nanofiltration membrane
0.5MPa；
(3) tertiary treatment: the waste water after two stage treatment is introduced into tertiary treatment pond, is sequentially added in tertiary treatment pond
Aluminium polychloride, polyaluminium sulfate, ferrous sulfate are simultaneously uniformly mixed, and sequentially add polyacrylamide, wood after 20 minutes
Quality derivative and 60 DEG C at a temperature of be mixed 10 minutes, sodium hydroxide is then added, be sufficiently mixed 5 points of stirring
Clock simultaneously stands 30 minutes；
(4) level Four is handled: waste water after tertiary treatment being introduced into clean water treatment area, which is tertiary treatment pond
Transition region between natural water, in the region in upstream region uniform kind be implanted with duckweed, the wherein planting density control of duckweed
System in 20 plants/square metre, the region midstream region uniform kind be implanted with cattail, wherein cattail planting density control 25 plants/
Square metre, reed is implanted with for uniform kind in the region Xia You of the region, and wherein the planting density control of reed is whole in 35 plants/square metre
A clean water treatment area is evenly equipped with cyanobacteria and green alga.
Wherein, the aperture of each layer filter screen is identical in coagulation and is 3mm, cathodic coating and anode film in two stage treatment
Mutual spacing be 10cm.
Embodiment 2:
A kind of mine wastewater recovery and treatment method, the described method comprises the following steps:
(1) coagulation: introducing coagulation pond for mine wastewater, and four layers of filtering are arranged in coagulation pond inlet
Net, first layer are set to equally distributed bentonite, the second layer is provided between second layer filter screen between third layer filter screen
It is equipped with equally distributed active carbon, third layer is provided with equally distributed zeolite between the 4th layer of filter screen, in first layer mistake
Strainer and the 4th layer of filter screen outer surface are covered with geotextiles, are equipped with microfiltration membranes in coagulation pond exit, the nanofiltration fenestra
At 0.5 micron, outlet pressure is controlled in 0.5MPa for diameter control；
(2) two stage treatment: introducing two stage treatment pond for the waste water after coagulation, is arranged at the both ends in two stage treatment pond
There are cathode plate and anode plate, several cathodic coatings and anode film being alternately placed is provided between cathode plate and anode plate, and two
Grade processing pond outlet end and arrival end are provided with nanofiltration membrane, and in 0.3nm, inlet pressure control exists the pore size control of the nanofiltration membrane
0.7MPa；
(3) tertiary treatment: the waste water after two stage treatment is introduced into tertiary treatment pond, is sequentially added in tertiary treatment pond
Aluminium polychloride, polyaluminium sulfate, ferrous sulfate are simultaneously uniformly mixed, and sequentially add polyacrylamide, wood after 30 minutes
Quality derivative and 70 DEG C at a temperature of be mixed 15 minutes, sodium hydroxide is then added, carries out being sufficiently mixed stirring 10
Minute simultaneously stands 45 minutes；
(4) level Four is handled: waste water after tertiary treatment being introduced into clean water treatment area, which is tertiary treatment pond
Transition region between natural water, in the region in upstream region uniform kind be implanted with duckweed, the wherein planting density control of duckweed
System in 25 plants/square metre, the region midstream region uniform kind be implanted with cattail, wherein cattail planting density control 30 plants/
Square metre, reed is implanted with for uniform kind in the region Xia You of the region, and wherein the planting density control of reed is whole in 40 plants/square metre
A clean water treatment area is evenly equipped with cyanobacteria and green alga.
Wherein, the aperture of each layer filter screen is identical in coagulation and is 5mm, cathodic coating and anode film in two stage treatment
Mutual spacing be 15cm.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.
Claims (1)
1. a kind of mine wastewater recovery and treatment method, which is characterized in that the described method comprises the following steps:
(1) coagulation: introducing coagulation pond for mine wastewater, and four layers of filter screen are arranged in coagulation pond inlet,
First layer is provided with to equally distributed bentonite, the second layer is provided between second layer filter screen between third layer filter screen
Equally distributed active carbon, third layer is provided with equally distributed zeolite between the 4th layer of filter screen, in first layer filter screen
Geotextiles are covered with the 4th layer of filter screen outer surface, microfiltration membranes are installed in coagulation pond exit, the micro-filtration membrane aperture control
At 0.3~0.5 micron, outlet pressure is controlled in 0.3~0.5MPa system；
(2) two stage treatment: introducing two stage treatment pond for the waste water after coagulation, and the both ends in two stage treatment pond are provided with yin
Pole plate and anode plate are provided with several cathodic coatings and anode film being alternately placed between cathode plate and anode plate, and at second level
The outlet end Li Chi and arrival end are provided with nanofiltration membrane, and the pore size control of the nanofiltration membrane is in 0.1~0.3nm, inlet pressure control
In 0.5~0.7MPa；
(3) tertiary treatment: the waste water after two stage treatment is introduced into tertiary treatment pond, polymerization is sequentially added in tertiary treatment pond
Aluminium chloride, polyaluminium sulfate, ferrous sulfate are simultaneously uniformly mixed, and polyacrylamide, wood are sequentially added after 20~30 minutes
Quality derivative and 60~70 DEG C at a temperature of be mixed 10~15 minutes, be then added sodium hydroxide, carry out sufficiently mixed
It closes stirring 5~10 minutes and stands 30~45 minutes；
(4) level Four is handled: waste water after tertiary treatment being introduced into clean water treatment area, the clean water treatment area is for tertiary treatment pond and certainly
Transition region between right water body, in the region in upstream region uniform kind be implanted with duckweed, wherein the planting density control of duckweed exists
20~25 plants/square metre are implanted with cattail for uniform kind in the region midstream region, and wherein the planting density of cattail is controlled 25~30
Strain/square metre, be implanted with reed for uniform kind in the region downstream region, wherein the planting density control of reed 35~40 plants/it is flat
Square rice, entire clean water treatment area are evenly equipped with cyanobacteria and green alga；
The aperture of each layer filter screen is identical in the coagulation and is 3~5mm；
The mutual spacing of cathodic coating and anode film is 10~15cm in the two stage treatment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610495311.9A CN105906168B (en) | 2016-06-27 | 2016-06-27 | A kind of mine wastewater recovery and treatment method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610495311.9A CN105906168B (en) | 2016-06-27 | 2016-06-27 | A kind of mine wastewater recovery and treatment method |
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| Publication Number | Publication Date |
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| CN105906168A CN105906168A (en) | 2016-08-31 |
| CN105906168B true CN105906168B (en) | 2019-06-14 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110038885A (en) * | 2019-06-05 | 2019-07-23 | 湖南双晟科技信息咨询有限公司 | A kind of restorative procedure of mine soil |
| CN114455711A (en) * | 2022-02-10 | 2022-05-10 | 江西省生态环境科学研究与规划院 | Filler and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104150688A (en) * | 2014-07-25 | 2014-11-19 | 中国环境科学研究院 | Device for classifying organic matters in underground water and purifying underground water by areas and purifying method |
| CN104944636A (en) * | 2015-06-07 | 2015-09-30 | 长春黄金研究院 | Non-ferrous metal mine acid wastewater treatment method |
| CN204918256U (en) * | 2015-06-12 | 2015-12-30 | 长春黄金研究院 | Acid effluent disposal system of mine copper -containing |
| CN105461184A (en) * | 2015-11-30 | 2016-04-06 | 云南水务投资股份有限公司 | Device for performing sludge reduction and stabilization by utilizing intercrop plants and process of device |
| CN105585146A (en) * | 2014-10-23 | 2016-05-18 | 青岛百键城环保科技有限公司 | A process of treating mine wastewater through applying a membrane technique |
-
2016
- 2016-06-27 CN CN201610495311.9A patent/CN105906168B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104150688A (en) * | 2014-07-25 | 2014-11-19 | 中国环境科学研究院 | Device for classifying organic matters in underground water and purifying underground water by areas and purifying method |
| CN105585146A (en) * | 2014-10-23 | 2016-05-18 | 青岛百键城环保科技有限公司 | A process of treating mine wastewater through applying a membrane technique |
| CN104944636A (en) * | 2015-06-07 | 2015-09-30 | 长春黄金研究院 | Non-ferrous metal mine acid wastewater treatment method |
| CN204918256U (en) * | 2015-06-12 | 2015-12-30 | 长春黄金研究院 | Acid effluent disposal system of mine copper -containing |
| CN105461184A (en) * | 2015-11-30 | 2016-04-06 | 云南水务投资股份有限公司 | Device for performing sludge reduction and stabilization by utilizing intercrop plants and process of device |
Non-Patent Citations (1)
| Title |
|---|
| 潜流人工湿地处理矿山废水的实验研究;汤波;《科学技术与工程》;20140531;第14卷(第13期);第306页第1.1节第1段 |
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