CN110342676A - A kind of Method for processing acid mine drainage - Google Patents
A kind of Method for processing acid mine drainage Download PDFInfo
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- CN110342676A CN110342676A CN201910533976.8A CN201910533976A CN110342676A CN 110342676 A CN110342676 A CN 110342676A CN 201910533976 A CN201910533976 A CN 201910533976A CN 110342676 A CN110342676 A CN 110342676A
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- waste water
- molecular sieve
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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
-
- 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
-
- 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
-
- 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
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention relates to water-treatment technology fields, and in particular to a kind of Method for processing acid mine drainage.The following steps are included: (1) puts into oxidant stirring into waste water, filter to get filtrate A；(2) polyvinyl alcohol is added into filtrate A and molecular sieve, agitation and filtration obtains liquor B；(3) alkali is added into liquor B, adjusts pH value, flocculant is then added, is filtered after stirring.Processing method of the invention have the advantages that it is quick, effective, economic and environment-friendly, for improve acid waste water pH value, remove waste water in heavy metal ion have good treatment effect.
Description
Technical field
The present invention relates to water-treatment technology fields, and in particular to a kind of Method for processing acid mine drainage.
Background technique
The problem of improvement of acid wastewater in mine is domestic and international current facing.Acid wastewater in mine is mainly from mining
Drench with rain waste water and the dressing plant's plant effluent and tailing dam overflow water etc. of the Mine water flow, waste-rock yard that are discharged in production.It is special
Point is that pH value of waste water is low, and water is big, containing heavy metal ion and complicated component etc..
Due to metal mine, especially nonferrous metal mine often association various metals sulfide, in exploitation or ore dressing
In the process, these mineral form sulfuric acid, metal sulfate under empty gas and water and the collective effect of bacterium, and dissolve out in ore
Various metals ion, thus form the acid waste water containing copper, iron, zinc, cadmium etc..After acid wastewater in mine is discharged into environment, it can make
Water pH value changes, and destroys the natural buffer function of water body, eliminates or inhibit the growth of bacterium and microorganism, interferes water body
Self-cleaning causes water body phenomena such as smelly, greening occur.And acid water can heavy corrosion pipeline, water pump, cement structures and
Other machinery equipment brings huge threat to people's health, life and production.
Application for a patent for invention CN 1273944A discloses a kind of method using Coal Ash Treating Wastewater, sewage, with power generation
The flyash stockpiling field of factory is as diafiltration bed and oxidation field, by waste water to be processed, the fine coal dust heap of sewage transport to power plant
Depositing field makes it flow through Flyash Layer, and diafiltration, which enters, catchments in structures, then by being discharged in the structures that catchment, adjusts the structures that catchment
Drain discharge, make waste water, sewage infiltration rate no more than 0.06 meter/per hour.Stockpiling powder is discharged using thermal power plant
The facility of coal ash makees black water by the biological oxidation decomposing, purifying of the diafiltration of flyash, absorption and sunlight, air
With.Effect has met or exceeded secondary biochemical treatment.
But there is also many disadvantages for the invention: 1) by waste water by pipeline to thermal power plant flyash store up field into
Row processing, needs to consume a large amount of tubing, construction investment is big；2) flyash in thermal power plant need to be stored up field becomes municipal sewage
Treatment plant, inconvenient operational administrative in practical operation.
Application for a patent for invention CN 109607971A is related to field of waste water treatment, discloses a kind of acid wastewater in mine ecology
Processing system and processing method.Acid wastewater in mine ecological treatment system of the invention includes the reservoir being sequentially communicated, lime
Shi Chi, periclase pond, sedimentation basin and aerobic wetland；The mixing of limestone particle and wood particle is filled in the lime stone pond
Object；Periclase particle is filled in the periclase pond；The aerobic wetland is kind of the wetland for being implanted with vegetation.System use,
Maintenance cost is low, high treating effect.Acid wastewater in mine ecological treatment method of the invention, allows acid wastewater in mine successively to pass through
The reservoir of processing system of the present invention, lime stone pond 90 minutes or more, periclase pond 60 minutes or more, sedimentation basin 120 minutes with
Upper and aerobic wetland.This method process stabilizing, easy to control, waste water after processing reaches III class standard of surface water.
But wetland method, due to taking up a large area, processing is affected by environment very big, is not suitable for large volume processing waste water.
Application for a patent for invention CN 104909497A discloses a kind of nonferrous metal mine process for treating acidic waste water, the party
Method is broadly divided into oxidation processes, four step of film process, vulcanizing treatment and neutralisation treatment, and acid waste water is in processing first using oxidation
Agent or aeration mode oxidize divalent iron ions into ferric ion, then carry out heavy iron reaction, and the clear liquid after reaction enters film
Processing system carries out separation concentration, and concentrate carries out sulfide precipitation processing, valuable metal is recycled, clear after vulcanization reaction
Liquid proceeds to neutralisation treatment unit and carries out neutralization precipitation.The present invention is low according to nonferrous metal mine acid waste water pH, it is a variety of heavy to contain
Oxidation processes, heavy iron processing, film process, sulfide precipitation, coagulating sedimentation and neutralisation treatment technology are incorporated in one by the features such as metal
, orderly substep collaboration handles nonferrous metal mine acid waste water, has high treating effect, treatment effeciency height, system
It is stable, can valuable resource in recycle-water, be easy to the advantages that industrial application, treated, and waste water can return to the technological process of production
It is used as recycled water or qualified discharge.
But the method, through film process, treatment effeciency substantially reduces, higher cost takes a long time.
Currently, acid can be improved there are no a kind of method for the treatment of of acidic wastewater that can be quick, effective, economic and environment-friendly
Property waste water pH value, remove waste water in heavy metal ion, enable qualified discharge.
Summary of the invention
In order to solve the problems such as treatment effeciency in the prior art is low, at high cost, effect is bad, the present invention provides a kind of mine
The processing method of acid waste water.
A kind of Method for processing acid mine drainage, comprising the following steps:
(1) oxidant stirring is put into waste water, filter to get filtrate A；
(2) polyvinyl alcohol is added into filtrate A and molecular sieve, agitation and filtration obtains liquor B；
(3) alkali is added into liquor B, flocculant is then added, is filtered after stirring.
Further, in the step (1), the oxidant is hydrogen peroxide or hypochlorous acid.
Further, in the step (1), the oxidant is hypochlorous acid.
Further, in the step (1), by weight, waste water: oxidant=300-350:1.
Further, in the step (1), mixing speed 20-60r/min, mixing time 1-2h.
Further, in the step (2), by weight, polyvinyl alcohol: molecular sieve=1:10-15；Filtrate A: poly- second
Enol=50-80:1.
Further, in the step (2), by weight, polyvinyl alcohol: molecular sieve=1:12；Filtrate A: poly- second
Enol=60:1.
Further, in the step (2), the molecular sieve type be ZSM-8 type molecular sieve, ZSM-11 type molecular sieve,
One of Silicalite-1 type molecular sieve is a variety of.
Further, in the step (2), the molecular sieve type is ZSM-8 type molecular sieve.
Further, in the step (2), mixing speed 50-100r/min, mixing time 2-5h.
Further, in the step (3), the alkali is one in sodium hydroxide, calcium hydroxide, calcium oxide or sodium carbonate
Kind is a variety of.
Further, in the step (3), the alkali is calcium oxide.
Further, in the step (3), the flocculant is polyacrylamide.
Further, in the step (3), by weight, liquor B: alkali=50-100:1；Alkali: flocculant=15-
30:1。
Further, in the step (3), by weight, liquor B: alkali=80:1；Alkali: flocculant=20:1.
Further, in the step (3), mixing speed 200-300r/min, mixing time 2-5h.
Further, comprising the following steps:
(1) hydrogen peroxide or hypochlorous acid are put into waste water, waste water: hydrogen peroxide or hypochlorous acid=300-350:1 are being stirred
It mixes under the conditions of speed is 20-60r/min and stirs 1-2h, filter to get filtrate A；
(2) polyvinyl alcohol and ZSM-8 type molecular sieve, ZSM-11 type molecular sieve, Silicalite-1 type are added into filtrate A
One of molecular sieve is a variety of, and agitation and filtration obtains liquor B；
(3) one of sodium hydroxide, calcium hydroxide, calcium oxide or sodium carbonate or a variety of, liquor B are added into liquor B:
Alkali=50-100:1 adjusts pH value, polyacrylamide is then added, alkali: flocculant=15-30:1, low whipping speed 200-
2-5h is stirred under the conditions of 300r/min then to filter.
Further, comprising the following steps:
(1) hypochlorous acid is put into waste water, filtrate A: hypochlorous acid=320:1, low whipping speed stir under the conditions of being 40r/min
1.2h is mixed, filter to get filtrate A；
(2) polyvinyl alcohol is added into filtrate A and ZSM-8 type molecular sieve, agitation and filtration obtains liquor B；
(3) calcium oxide is added into liquor B, liquor B: alkali=80:1 adjusts pH value, polyacrylamide is then added, alkali:
Flocculant=20:1, under the conditions of low whipping speed is 250r/min then stirring 3h is filtered.
The present invention has selected suitable molecular sieve, and solid particle in waste water, heavy metal ion are adsorbed with preferably
Effect also has good effect for processing waste water middle acid substance.
It is compared with the prior art, the beneficial effects of the present invention are:
1. the present invention has selected suitable flocculant, and has selected suitable addition opportunity and mixing speed, so that flocculation
Effect greatly enhances.
2. the present invention it is preferable for the treatment effect of heavy metal in mining wastewater, for the metals such as copper, iron, zinc, cadmium, lead from
Son has preferable governance role.
3. the present invention has selected suitable molecular sieve, for solid particle in waste water, heavy metal ion be adsorbed with it is more preferable
Effect, for processing waste water middle acid substance also have good effect.
4. the present invention has selected suitable reagent order of addition and treatment conditions during processing, so that purification efficiency is more
Height, it is more preferable to the treatment effect of waste water.
5. operation of the present invention process is simple, easy to industrialized production.
Specific embodiment
The invention will now be further described with reference to specific embodiments, the advantages and features of the present invention will be with description and
It is apparent, but these examples are merely exemplary, it is not intended to limit the scope of the present invention in any way.Those skilled in the art
Member it should be understood that without departing from the spirit and scope of the invention can details to technical solution of the present invention and form into
Row modifications or substitutions, but these modifications and replacement are fallen within the protection scope of the present invention.
As research object, embodiment and comparative example uses useless the waste water that mining firm, Longyan is generated
In water, the concentration of copper ion is 21.26mg/L, the concentration of iron ion is 279.43mg/L, the concentration of zinc ion is 92.47mg/
L, the concentration of cadmium ion is 15.18mg/L, the concentration of lead ion is 18.77mg/L, pH value 2.1.
Embodiment 1
(1) hypochlorous acid is put into waste water, waste water: hypochlorous acid=320:1, low whipping speed stir under the conditions of being 40r/min
1.2h is mixed, filter to get filtrate A；
(2) polyvinyl alcohol and ZSM-8 type molecular sieve are added into filtrate A, 3h is stirred under the conditions of 80r/min and filters to obtain filter
Liquid B, wherein filtrate A: polyvinyl alcohol: molecular sieve=60:1:12；
(3) calcium oxide is added into liquor B, liquor B: then polyacrylamide is added, alkali: polyacrylamide in alkali=80:1
Amine=20:1, under the conditions of low whipping speed is 250r/min then stirring 3h is filtered.
Embodiment 2
(1) hydrogen peroxide is put into waste water, waste water: hydrogen peroxide=300:1, low whipping speed are 60r/min condition
Lower stirring 1h, filter to get filtrate A；
(2) polyvinyl alcohol and ZSM-11 type molecular sieve are added into filtrate A, 5h is stirred under the conditions of 50r/min and is filtered
Liquor B, wherein filtrate A: polyvinyl alcohol: molecular sieve=50:1:10；
(3) sodium carbonate is added into liquor B, liquor B: then polyacrylamide is added, alkali: polyacrylamide in alkali=50:1
Amine=15:1, under the conditions of low whipping speed is 200r/min then stirring 5h is filtered.
Embodiment 3
(1) hypochlorous acid is put into waste water, waste water: hypochlorous acid=350:1, low whipping speed stir under the conditions of being 20r/min
2h is mixed, filter to get filtrate A；
(2) polyvinyl alcohol and Silicalite-1 type molecular sieve are added into filtrate A, stirs 2h under the conditions of 100r/min
Filter to get filtrate B, wherein filtrate A: polyvinyl alcohol: molecular sieve=80:1:15；
(3) sodium hydroxide is added into liquor B, liquor B: then polyacrylamide is added, alkali: polypropylene in alkali=100:1
Amide=30:1, under the conditions of low whipping speed is 300r/min then stirring 2h is filtered.
Comparative example 1
Compared with Example 1, the mixing speed of flocculant is different.
Wherein step (3) are as follows: calcium oxide is added into liquor B, liquor B: then polyacrylamide is added in alkali=80:1,
Alkali: polyacrylamide=20:1, under the conditions of low whipping speed is 500r/min then stirring 3h is filtered.
Comparative example 2
Compared with Example 1, molecular sieve type is different.
Wherein step (2) are as follows: polyvinyl alcohol and M type molecular sieve are added into filtrate A, stirs 3h under the conditions of 80r/min
Filter to get filtrate B, wherein filtrate A: polyvinyl alcohol: molecular sieve=60:1:12.
Comparative example 3
Compared with Example 1, each sequence of steps is different.
(1) polyvinyl alcohol and ZSM-8 type molecular sieve are added into waste water, 3h is stirred under the conditions of 80r/min and filters to obtain filter
Liquid A, wherein waste water: polyvinyl alcohol: molecular sieve=60:1:12；
(2) calcium oxide is added into filtrate A, filtrate A: then polyacrylamide is added, alkali: polyacrylamide in alkali=80:1
Amine=20:1, the stirring 3h and then B that filters to get filtrate under the conditions of low whipping speed is 250r/min；
(3) hypochlorous acid is put into liquor B, liquor B: hypochlorous acid=320:1, under the conditions of low whipping speed is 40r/min
Stir 1.2h.
Test example 1
Using the content of metal ion after inductively-coupled plasma spectrometer (ICP) detection processing.
High frequency power: 1.10kW；Atomization gas flow: 0.75L/min；Secondary air amount: 1.50L/min；Plasma air-flow
Amount: 15.0L/min；Analyze pump speed: 15.0r/min；Reading duration: 5.0s；Sample introduction delay: 30.0s.Elemental analysis wavelength are as follows:
Cu-327.395nm；Fe-238.204nm；Zn-213.857nm；Cd-214.439nm；Pb-220.353nm.
Mixture of multi-elements standard liquid is diluted step by step, being configured to content is 10,20,50,100,200,400,600 μ g/L series
Standard uses solution, then successively sample introduction, using mass concentration as abscissa, intensity be ordinate draw each element standard it is bent
Line.Test discovery, the linearly dependent coefficient of each element standard curve is 0.999, can satisfy analysis and requires, can accurately determine
It is fixed to measure.
Various examples and comparative examples treated sample is subjected to icp analysis, experimental result is as follows:
Integration test result is it is found that the application has following advantages:
1. the present invention has selected suitable flocculant, and has selected suitable addition opportunity and mixing speed, so that flocculation
Effect greatly enhances.
2. the present invention has selected suitable molecular sieve, for solid particle in waste water, heavy metal ion be adsorbed with it is more preferable
Effect, for processing waste water middle acid substance also have good effect.
3. the present invention has selected suitable reagent order of addition and treatment conditions during processing, so that purification efficiency is more
Height, it is more preferable to the treatment effect of waste water.
The technical means disclosed in the embodiments of the present invention is not limited only to above-mentioned disclosed technological means, further includes by the above skill
Technical solution composed by art feature any combination.The foregoing is a specific embodiment of the present invention, it is noted that for this
For the those of ordinary skill of technical field, without departing from the principle of the present invention, it can also make several improvements and repair
Decorations, these also will be regarded as protection scope of the present invention.
Claims (10)
1. a kind of Method for processing acid mine drainage, which comprises the following steps:
(1) oxidant stirring is put into waste water, filter to get filtrate A；
(2) polyvinyl alcohol is added into filtrate A and molecular sieve, agitation and filtration obtains liquor B；
(3) alkali is added into liquor B, flocculant is then added, is filtered after stirring.
2. processing method according to claim 1, which is characterized in that in the step (1), the oxidant is peroxidating
Hydrogen or hypochlorous acid.
3. processing method according to claim 1, which is characterized in that in the step (1), by weight, waste water: oxygen
Agent=300-350:1.
4. processing method according to claim 1, which is characterized in that in the step (2), by weight, polyethylene
Alcohol: molecular sieve=1:10-15.
5. processing method according to claim 1, which is characterized in that in the step (2), by weight, filtrate A:
Polyvinyl alcohol=50-80:1.
6. processing method according to claim 1, which is characterized in that in the step (2), the molecular sieve type is
One of ZSM-8 type molecular sieve, ZSM-11 type molecular sieve, Silicalite-1 type molecular sieve are a variety of.
7. processing method according to claim 1, which is characterized in that in the step (3), the alkali be sodium hydroxide,
One of calcium hydroxide, calcium oxide or sodium carbonate are a variety of.
8. processing method according to claim 1, which is characterized in that in the step (3), the flocculant is polypropylene
Amide.
9. processing method according to claim 1, which is characterized in that in the step (3), by weight, liquor B:
Alkali=50-100:1.
10. processing method according to claim 1, which is characterized in that in the step (3), by weight, alkali: wadding
Solidifying agent=15-30:1.
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| CN201910533976.8A CN110342676B (en) | 2019-06-19 | 2019-06-19 | Treatment method of acid mine wastewater |
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| CN201910533976.8A CN110342676B (en) | 2019-06-19 | 2019-06-19 | Treatment method of acid mine wastewater |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101805084A (en) * | 2010-03-29 | 2010-08-18 | 中钢集团马鞍山矿山研究院有限公司 | Process for treating mine wastewater containing sulfur minerals, As, Pb and Cd |
| CN109354328A (en) * | 2018-12-10 | 2019-02-19 | 国家地质实验测试中心 | A kind of acidic mine waste water processing system |
| CN109574370A (en) * | 2017-09-29 | 2019-04-05 | 中冶华天工程技术有限公司 | Abandoned mine process for treating acidic waste water |
-
2019
- 2019-06-19 CN CN201910533976.8A patent/CN110342676B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101805084A (en) * | 2010-03-29 | 2010-08-18 | 中钢集团马鞍山矿山研究院有限公司 | Process for treating mine wastewater containing sulfur minerals, As, Pb and Cd |
| CN109574370A (en) * | 2017-09-29 | 2019-04-05 | 中冶华天工程技术有限公司 | Abandoned mine process for treating acidic waste water |
| CN109354328A (en) * | 2018-12-10 | 2019-02-19 | 国家地质实验测试中心 | A kind of acidic mine waste water processing system |
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