CN106430799A - Method for treating acid mine wastewater through papermaking black liquid - Google Patents
Method for treating acid mine wastewater through papermaking black liquid Download PDFInfo
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- CN106430799A CN106430799A CN201510474251.8A CN201510474251A CN106430799A CN 106430799 A CN106430799 A CN 106430799A CN 201510474251 A CN201510474251 A CN 201510474251A CN 106430799 A CN106430799 A CN 106430799A
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Abstract
The invention belongs to the technical field of wastewater treating, and particularly relates to a method for treating acid mine wastewater through papermaking black liquid. The method includes the steps that the acid wastewater and the papermaking black liquid are activated for 1 h to 8 h in a double-shaft mixer, and then a mixed waste material is obtained; under the condition of the steady temperature of 3 DEG C to 27 DEG C, the mixed waste material and a fermenting agent are mixed to be even, then the mixture is transferred into an anaerobic reactor and sealed to be standing for 12 h to 48 h, and then metal sulfide and clear liquid are obtained. The method has the advantages that the removing rate is high, recycling is easy, and the cost is low, and the removing effect on arsenic and copper is particularly prominent.
Description
Technical field
The invention belongs to technical field of waste water processing is and in particular to a kind of process mine spent acidic using black liquid
The method of water.
Background technology
Acid wastewater in mine has the characteristics that acidity height, heavy metal are many, therefore causes harm to environment and biology,
The method of conventional process acid wastewater in mine is mainly neutralization precipitation method, and it is simple to operate, by-product gypsum, but its
High energy consumption, cost is big.As one of main garbage in paper mill, it contains a large amount of organic pollutions to black liquid
And lignin, its intractability is big, typically by it is concentrated, sulfonation operation makes lignosulfonates, but
This method can only administer a small amount of black liquor.The present invention is based under this dual background, provides a kind of thinking of the treatment of wastes with processes of wastes against one another.
Patent No. 201010589082.X《A kind for the treatment of method of mine wastewater》Disclose one kind to administer simultaneously
Acid wastewater in mine and the method for flotation waste water, this method achieves two kinds of waste water of improvement simultaneously, is conducive to environment,
But this method reagent dosage is big and expensive, lead to production cost high, and this method uncontrollable response time,
And then lead to not estimate the input in course of reaction.Therefore, the present inventor is through repeatedly studying, and combines papermaking
The principle of slurrying, provides a kind of new approaches for administering acid wastewater in mine.
Content of the invention
It is an object of the invention to realizing the integrated treatment of paper plant's black liquor and acid wastewater in mine, provide a kind of technique
Simply, equipment requirements are low, low cost method, realize especially by below scheme：
A kind of method that utilization black liquid processes acid wastewater in mine, its method is：By acid waste water and papermaking
After black liquor activates 1-8h in biaxial rneader, obtain mixing waste, under the conditions of steady temperature is for 3-27 DEG C,
After it is mixed homogeneously with leaven, proceed to anaerobic reactor, after standing 12-48h after sealing, obtain
Metal sulfide and clear liquid.
Described black liquid is the black liquor producing in soda pulping.
The COD value of described black liquid is 200mg/L-500mg/L.
Described acid waste water is 1-5 with the volume ratio of black liquid:1.
The power of described biaxial rneader is 1-5.5kw, and further preferred power is 2-5kw, further
Preferably power is 3.5kw.
Described leaven is 0.02-0.15 with the solid-to-liquid ratio of mixing waste, and preferably solid-to-liquid ratio is 0.08.
Described leaven is the mixture of one or more of yeast powder, yeast extract, yeast extract.
In described leaven, the weight ratio of each constituent is 1. yeast powder：Yeast extract：Yeast extract is
0.2-3:0.5-1.5:1；2. yeast powder：Yeast extract is 1:0.1-1；3. yeast powder：Yeast extract is 0.2-2:1；
4. yeast extract：Yeast extract is 1:0.5-2.
The microbiological culture media of described leaven is bacillus subtilis, Bacterium gluconicum, one kind of escherichia coli.
Beneficial effects of the present invention
The present invention utilizes black liquid to contain lignin, and acid wastewater in mine contains the characteristic of heavy metal, lives in conjunction with machinery
Change effect and the excellent feature of biaxial rneader dispersive property, make metal ion that complex reaction to occur, and subsequently, utilize
Fermentation technique, makes a large amount of metals be converted to organic complex state, and because soda processes black liquid is in alkalescence, can fit
Amount ground adjusts pH, and then the pH value of raising acid wastewater in mine, the spy of microbiological culture media in combining with fermentation agent
Property so that the heavy metal of sulfate precipitation is reduced into oxide morphology, by with reference to traditional waste liquid detection side
Method, is detected to the acid wastewater in mine after before processing in embodiment it is found that the average removal rate of ferrum is 93%
More than, the average removal rate of copper is more than 99%, and the average removal rate of arsenic is more than 99%, the average removal of zinc
Rate is more than 90%, and in traditional method neutralisation, ferrum, copper, arsenic, the average removal rate of zinc are each about 62%,
Thus release：The present invention has clearance height, easily reclaims, the advantage of low cost.
Specific embodiment
Technical scheme is further limited with reference to specific embodiment, but require to protect
The scope of shield is not only limited to description.
Embodiment 1
A kind of method of utilization black liquid treatment of acidic wastewater, its method is：By acid waste water and black liquid
In biaxial rneader activation 10h after, obtain mixing waste, steady temperature be 25 DEG C under the conditions of, by its with
After leaven carries out mix homogeneously, proceed to anaerobic reactor, after standing 24h after sealing, obtain metal sulfide
And clear liquid.
Described black liquid is the black liquor producing in soda pulping.
The COD value of described black liquid is 300mg/L.
Described acid waste water is 4 with the volume ratio of black liquid:1.
The power of described biaxial rneader is 5kw.
Described leaven is 0.08 with the solid-to-liquid ratio of mixing waste.
Described leaven is yeast powder, the mixture of yeast extract.
In described leaven, yeast powder, the weight of yeast extract are 1:1.
The microbiological culture media of described leaven is Bacterium gluconicum.
Embodiment 2
A kind of method of utilization black liquid treatment of acidic wastewater, its method is：By acid waste water and black liquid
In biaxial rneader activation 3h after, obtain mixing waste, steady temperature be 5 DEG C under the conditions of, by its with send out
After ferment agent carries out mix homogeneously, proceed to anaerobic reactor, after sealing standing 36h after, obtain metal sulfide and
Clear liquid.
Described black liquid is the black liquor producing in soda pulping.
The COD value of described black liquid is 100mg/L.
Described acid waste water is 8 with the volume ratio of black liquid:1.
The power of described biaxial rneader is 3kw.
Described leaven is 0.13 with the solid-to-liquid ratio of mixing waste.
Described leaven is yeast powder, yeast extract, the mixture of yeast extract.
Yeast powder in described leaven, yeast extract, the weight of yeast extract are than for 1.5:0.8:1.
The microbiological culture media of described leaven is escherichia coli.
Embodiment 3
A kind of method of utilization black liquid treatment of acidic wastewater, its method is：By acid waste water and black liquid
In biaxial rneader activation 5h after, obtain mixing waste, steady temperature be 15 DEG C under the conditions of, by its with
After leaven carries out mix homogeneously, proceed to anaerobic reactor, after standing 24h after sealing, obtain metal sulfide
And clear liquid.
Described black liquid is the black liquor producing in soda pulping.
The COD value of described black liquid is 400mg/L.
Described acid waste water is 0.2 with the volume ratio of black liquid:1.
The power of described biaxial rneader is 1.5kw.
Described leaven is 0.1 with the solid-to-liquid ratio of mixing waste.
Described leaven is yeast extract, the mixture of yeast extract.
Yeast extract in described leaven, the weight of yeast extract are than for 1:1.8.
The microbiological culture media of described leaven is staphylococcuses.
Embodiment 4
A kind of method of utilization black liquid treatment of acidic wastewater, its method is：By acid waste water and black liquid
In biaxial rneader activation 2h after, obtain mixing waste, steady temperature be 20 DEG C under the conditions of, by its with
After leaven carries out mix homogeneously, proceed to anaerobic reactor, after standing 32h after sealing, obtain metal sulfide
And clear liquid.
Described black liquid is the black liquor producing in soda pulping.
The COD value of described black liquid is 250mg/L.
Described acid waste water is 2 with the volume ratio of black liquid:1.
The power of described biaxial rneader is 3.5kw.
Described leaven is 0.03 with the solid-to-liquid ratio of mixing waste.
Described leaven is yeast extract.
The microbiological culture media of described leaven is bacillus subtilis.
Embodiment 5
A kind of method of utilization black liquid treatment of acidic wastewater, its method is：By acid waste water and black liquid
In biaxial rneader activation 5h after, obtain mixing waste, steady temperature be 30 DEG C under the conditions of, by its with
After leaven carries out mix homogeneously, proceed to anaerobic reactor, after standing 72h after sealing, obtain metal sulfide
And clear liquid.
Described black liquid is the black liquor producing in soda pulping.
The COD value of described black liquid is 600mg/L.
Described acid waste water is 3 with the volume ratio of black liquid:1.
The power of described biaxial rneader is 5.2kw.
Described leaven is 0.09 with the solid-to-liquid ratio of mixing waste.
Described leaven is yeast powder, the mixture of yeast extract.
Yeast powder in described leaven, the weight of yeast extract are than for 1:0.6.
The microbiological culture media of described leaven is Bacterium gluconicum.
Embodiment 6
A kind of method of utilization black liquid treatment of acidic wastewater, its method is：By acid waste water and black liquid
In biaxial rneader activation 8h after, obtain mixing waste, steady temperature be 2 DEG C under the conditions of, by its with send out
After ferment agent carries out mix homogeneously, proceed to anaerobic reactor, after sealing standing 36h after, obtain metal sulfide and
Clear liquid.
Described black liquid is the black liquor producing in soda pulping.
The COD value of described black liquid is 450mg/L.
Described acid waste water is 4 with the volume ratio of black liquid:1.
The power of described biaxial rneader is 2.5kw.
Described leaven is 0.1 with the solid-to-liquid ratio of mixing waste.
Described leaven is yeast powder.
The microbiological culture media of described leaven is bacillus subtilis.
Experimental example 1
Take the actual acid waste water of copper mine, iron mine, zinc ore first respectively, and conventional components detection is carried out to it, so
Afterwards every kind of acid waste water is divided into 72 groups, every group of 20mL, it is carried out by the scheme of embodiment 1-6 respectively
Process, after processing, the clear liquid of gained carries out conventional components detection, is computed：
Ferrum clearance average out to 94% in the acid waste water of copper mine, arsenic removal rate is 98%, and copper removal rate is 97%,
Zinc clearance is 87%.
Ferrum clearance average out to 86% in the acid waste water of iron mine, arsenic removal rate is 100%, and copper removal rate is
99%, zinc clearance is 95%.
Ferrum clearance average out to 97% in the acid waste water of zinc ore, arsenic removal rate is 100%, and copper removal rate is
100%, zinc clearance is 90%.
Claims (10)
1. a kind of utilization black liquid processes the method for acid wastewater in mine it is characterised in that its method is：
Acid waste water and black liquid are activated after 1-8h in biaxial rneader, obtains mixing waste, in constant temperature
Spend for, under the conditions of 3-27 DEG C, after it is mixed homogeneously with leaven, proceeding to anaerobic reactor, quiet after sealing
After putting 12-48h, obtain metal sulfide and clear liquid.
2. the method that utilization black liquid as claimed in claim 1 processes acid wastewater in mine, its feature exists
In described black liquid is the black liquor producing in soda pulping.
3. the method that utilization black liquid as claimed in claim 1 or 2 processes acid wastewater in mine, it is special
Levy and be, described acid waste water is 1-5 with the volume ratio of black liquid:1.
4. the method that utilization black liquid as claimed in claim 1 processes acid wastewater in mine, its feature exists
In the power of described biaxial rneader is 1-5.5kw.
5. the method that utilization black liquid as claimed in claim 1 processes acid wastewater in mine, its feature exists
In the power of described biaxial rneader is 2-5kw.
6. the method that utilization black liquid as claimed in claim 1 processes acid wastewater in mine, its feature exists
In the power of described biaxial rneader is 3.5kw.
7. the method that utilization black liquid as claimed in claim 1 processes acid wastewater in mine, its feature exists
In described leaven is 0.02-0.15 with the solid-to-liquid ratio of mixing waste.
8. the method that the utilization black liquid as described in claim 1 or 7 processes acid wastewater in mine, it is special
Levy and be, described leaven is the mixture of one or more of yeast powder, yeast extract, yeast extract.
9. the method that the utilization black liquid as described in claim 1 or 7 or 8 processes acid wastewater in mine,
It is characterized in that, in described leaven, the weight ratio of each constituent is 1. yeast powder：Yeast extract：Yeast soaks
Cream is 0.2-3:0.5-1.5:1；2. yeast powder：Yeast extract is 1:0.1-1；3. yeast powder：Yeast extract is 0.2-2:1；
4. yeast extract：Yeast extract is 1:0.5-2.
10. the utilization black liquid as described in claim 1 or 7 or 8 or 9 processes the side of acid wastewater in mine
Method it is characterised in that the microbiological culture media of described leaven be bacillus subtilis, Bacterium gluconicum, big
One kind of enterobacteria.
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| CN201510474251.8A CN106430799B (en) | 2015-08-05 | 2015-08-05 | Method for treating mine acidic wastewater by using papermaking black liquor |
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| CN106430799B CN106430799B (en) | 2020-03-27 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101219844A (en) * | 2008-01-23 | 2008-07-16 | 太原理工大学 | A kind of process of biological treatment of acid mine wastewater |
| CN101531976A (en) * | 2009-04-21 | 2009-09-16 | 中山大学 | Citrobacter sp. strain DBM and method for treating acid mine drainage (AMD) using same |
| CN102079594A (en) * | 2010-12-15 | 2011-06-01 | 东华大学 | Treatment method of mine wastewater |
| CN102285730A (en) * | 2011-05-26 | 2011-12-21 | 武汉海德天物新材料有限公司 | Treatment method and device for acid-base neutralization of mine wastewater |
| CN104649520A (en) * | 2015-02-15 | 2015-05-27 | 华南农业大学 | Acid mine wastewater treatment system and method |
| CN104891710A (en) * | 2015-06-09 | 2015-09-09 | 长春黄金研究院 | Fast and effective treatment method for acid waste water from nonferrous metal mines |
-
2015
- 2015-08-05 CN CN201510474251.8A patent/CN106430799B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101219844A (en) * | 2008-01-23 | 2008-07-16 | 太原理工大学 | A kind of process of biological treatment of acid mine wastewater |
| CN101531976A (en) * | 2009-04-21 | 2009-09-16 | 中山大学 | Citrobacter sp. strain DBM and method for treating acid mine drainage (AMD) using same |
| CN102079594A (en) * | 2010-12-15 | 2011-06-01 | 东华大学 | Treatment method of mine wastewater |
| CN102285730A (en) * | 2011-05-26 | 2011-12-21 | 武汉海德天物新材料有限公司 | Treatment method and device for acid-base neutralization of mine wastewater |
| CN104649520A (en) * | 2015-02-15 | 2015-05-27 | 华南农业大学 | Acid mine wastewater treatment system and method |
| CN104891710A (en) * | 2015-06-09 | 2015-09-09 | 长春黄金研究院 | Fast and effective treatment method for acid waste water from nonferrous metal mines |
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