CN103086578A - Method for treating quintavalent-antimony-containing wastewater with sulfate mixed bacteria - Google Patents
Method for treating quintavalent-antimony-containing wastewater with sulfate mixed bacteria Download PDFInfo
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- CN103086578A CN103086578A CN2013100688197A CN201310068819A CN103086578A CN 103086578 A CN103086578 A CN 103086578A CN 2013100688197 A CN2013100688197 A CN 2013100688197A CN 201310068819 A CN201310068819 A CN 201310068819A CN 103086578 A CN103086578 A CN 103086578A
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- antimony
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- containing wastewater
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Abstract
The invention relates to a method for treating quintavalent-antimony-containing wastewater with sulfate mixed bacteria, which comprises the following steps: extracting evenly-mixed sludge from an anaerobic digester of a sewage treatment plant, transferring the sludge into an enrichment bottle, adding anhydrous sodium sulfate, and carrying out culture and acclimation under anaerobic conditions; repeatedly culturing many times by using a liquid PostgateB culture medium to obtain sulfate mixed bacteria (SRB), inoculating the acclimated and enriched sulfate mixed bacteria liquid strain into a mixed sample system composed of PostgateB culture medium and antimony-containing wastewater, regulating the pH value to 6.6-7.0, and carrying out shake culture on the mixed sample system for some time; and finally, after the shake culture is finished, adding a microbe flocculant, regulating the pH value, flocculating, and discharging water. The method is simple to operate and low in cost, and the technical process is easy to control; and thus, the method can implement industrialization and convert pollutants into harmless substances, and can be widely used for industrialized treatment of antimony industrial wastewater.
Description
Technical field
The present invention relates to a kind of vitriol mixed bacterium (SRB) of utilizing and process the method that contains quinquevalence antimony waste water, belong to environment protection the dirty water decontamination handles technical field.
Background technology
Antimony is a kind of metalloid, is positioned at periodic table of elements V main group.Antimony and compound have potential carinogenicity, can cause liver, skin, breathing and cardiovascular systems pathology, belong to priority pollutants.Antimony compounds is mainly used in the fire retardant of the goods such as textiles, paper, tackiness agent, brake facing.
China is antimony ore reserves big countries, accounts for 52.8 % of world's antimony ore, approximately has 9.5 * 10
5Ton.At present, the whole world increases year by year to antimony output and demand.The antimony ore product also by 1994 8.0 * 10
4The ton increase to 2010 1.2 * 10
5Ton accounts for 88.9 % of world's product population.
At present, China approximately has 114 antimony ores to exploit, and the mining area of 78.0 % is positioned at the southwest of China, in the antimony ore processing district, owing to lacking effective control techniques, untreated mine tailing and melting waste slag leak cruelly in air, under the washing away of sleet, very easily cause near the serious antimony pollution of soil, water body and air in mining area.Occurred the pollution problem of large face near the Southwestern China mining area, wherein in the surface water and groundwater in the mining area such as tinnery, antimony content reaches 7.3 μ g/L-2.94 * 10
4μ g/L is all over 5 μ g/L of my drinking water standard.
In the polluted-water of general earth's surface, mainly take quinquevalence antimony as main, at present, antimonic treatment technology mainly contains physical-chemical absorption, biological adsorption, electrochemistry, chemical reduction or precipitation.But these technology ubiquities place to go weak effect, cost are high, easily cause secondary pollution problems.Therefore, in the urgent need to a kind of efficient, environmental protection, cheap antimony treatment technology.
Summary of the invention
The purpose of this invention is to provide a kind of vitriol mixed bacterium of utilizing and process the method that contains quinquevalence antimony waste water, at first the method extracts from the anaerobic digester of sewage work the mud that mixes, then mud is transferred in the enrichment bottle, add anhydrous sodium sulphate, then under anaerobic, cultivate domestication.Recycling liquid Postgate B substratum is repeatedly cultivated and is repeatedly obtained vitriol mixed bacterium (SRB), to tame again the good vitriol mixed bacterium liquid inoculation of enrichment in the compound sample system of Postgate B substratum and stibium-containing wastewater, after regulating pH 6.6-7.0, the compound sample oscillation body is cultivated the certain hour termination, add at last microbial flocculant, the water outlet of flocculating after adjusting pH.The method is easy and simple to handle, technological process is easy to control, and cost is low can realize industrialization, and the innoxious transformation of the pollutent of realization can be widely used in the industrialization of antimony trade effluent and process.
A kind of vitriol mixed bacterium of utilizing of the present invention is processed the method that contains quinquevalence antimony waste water, follows these steps to carry out:
A, at first extract from the anaerobic digester of sewage work the mud that mixes, then mud is transferred in the enrichment bottle, added the 2-5g anhydrous sodium sulphate in the mud of every 800-1000 ml, under anaerobic, it is 20-35 ℃ that culture temperature is set, and cultivates domestication 1-3 week;
B, utilize liquid Postgate B substratum repeatedly to cultivate 3-5 time, obtain vitriol mixed bacterium (SRB);
C, under anaerobic will tame the good vitriol mixed bacterium of enrichment and be inoculated into liquid volume than in the compound sample system for the Postgate B substratum of 1:1-1:1.5 and stibium-containing wastewater according to the inoculum size of volume ratio 5-25 %, with volume ratio be 10% NaOH to regulate pH be 6.6-7.0, the compound sample system is placed in shaking culture 20-30 h termination reaction under the condition that rotating speed is 100-200rpm;
D, be that 0.1-0.5 ml/L adds microbial flocculant according to concentration, the rare acid for adjusting pH that is 10 % with volume ratio is 5-7, and after the 1-2d that flocculates, water outlet gets final product.
Step a extracts the moisture percentage in sewage sludge that mixes at 80-95% from the anaerobic digester of sewage work.
The anhydrous sodium sulphate that adds in mud in step a is the analytical pure solid sample.
Anaerobic condition in step a is the artificial anaerobic environment of making, and in its anaerobic condition, gas is N
2: CO
2: H
2Mixed gas or CO
2, H
2Or N
2Pure gas.
A kind of vitriol mixed bacterium of utilizing of the present invention is processed the method that contains quinquevalence antimony waste water, and the concrete technology step is:
Enrichment and the preparation of vitriol mixed bacterium (SRB):
Extract from the anaerobic digester of sewage work the mud that mixes, moisture percentage in sewage sludge is at 80-95%, then mud is transferred in the enrichment bottle, add 2-5g analytical pure solid sample anhydrous sodium sulphate in the mud of every 800-1000 ml, then under anaerobic, it is 20-35 ℃ that culture temperature is set, and cultivates domestication 1-3 week, and recycling liquid Postgate B substratum is repeatedly cultivated and obtained vitriol mixed bacterium (SRB) for 3-5 time;
The reaction running-course control:
The artificial anaerobic environment of making, in its anaerobic condition, gas is N
2/ CO
2/ H
2Gas mixture or single CO
2, H
2, N
2Gas condition, cultivating temperature of reaction is 20-35 ℃, vitriol mixed bacterium (SRB) the liquid bacterial strain that the domestication enrichment is good is inoculated into liquid volume than in the compound sample system for the Postgate B substratum of 1:1-1:1.5 and stibium-containing wastewater according to the inoculum size of volume ratio 5-25 %, the NaOH solution adjusting pH that is 10 % with volume ratio is 6.6-7.0, and the compound sample system is placed in shaking culture 20-30 h termination reaction under the condition that rotating speed is 100-200rpm;
Exiting water process is controlled:
After the termination reaction system, be that 0.5-0.5 ml/L adds microbial flocculant according to concentration, the rare acid for adjusting pH that is 10 % with volume ratio is 5-7, after the 1-2 d that flocculates, water outlet gets final product.
The composition of the Postgate B substratum described in the present invention is CaCl
22H
2O 0.1 gL
-1, K
2HPO
40.5 g L
-1, NH
4Cl1.0 g L
-1, Na
2SO
41.5 g L
-1, 70% Sodium.alpha.-hydroxypropionate 4 mL L
-1, yeast soaks powder 1g L
-1, xitix 0.2g L
-1, mineral element 10 mL L
-1
A kind of vitriol mixed bacterium of utilizing of the present invention is processed the method that contains quinquevalence antimony waste water, the major advantage of the method: 1. a kind ofly utilize vitriol mixed bacterium (SRB) to process to contain the method strain separating of quinquevalence antimony waste water in a kind of common anaerobic sludge environment, domestication through Sodium Persulfate, itself and quinquevalence antimony reaction are played obvious reductive action to it, and quinquevalence antimony is converted to free of contamination trivalent antimony; 2. the method anaerobic environment can be controlled by cheap gas, and technological process is simple to operate, do not need expensive drugs, and the flocculation enrichment selects microbial flocculant to realize the advantage that cost is low, effect is high equally.
Embodiment
Embodiment 1
A, extract the mud that mixes from the anaerobic digester of the east of a river, Urumchi sewage work, moisture percentage in sewage sludge is 80%, then mud is transferred in the enrichment bottle, add 2g analytical pure solid sample anhydrous sodium sulphate in the mud of every 800 ml, at the artificial anaerobic environment of making, in its anaerobic condition, gas is CO
2Pure gas, it is 20 ℃ that culture temperature is set, and cultivates 1 week of domestication;
B, utilize liquid Postgate B substratum repeatedly to cultivate 3 times, obtain vitriol mixed bacterium (SRB);
C, under step a anaerobic condition with vitriol mixed bacterium (SRB) according to the inoculum size of volume ratio 5 % be inoculated into liquid volume than the compound sample system for the Postgate B substratum of 1:1 and stibium-containing wastewater in, the NaOH adjusting pH that is 10 % with volume ratio is 6.6, and the compound sample system is placed in shaking culture 20 h termination reactions under the condition that rotating speed is 100rpm;
D, be that 0.1ml/L adds microbial flocculant according to concentration, the rare acid for adjusting pH that is 10 % with volume ratio is 5, water outlet after the 2d that flocculates, and its water outlet antimony clearance is 50.1%.
Embodiment 2
A, extract the mud that mixes from the anaerobic digester of the east of a river, Urumchi sewage work, moisture percentage in sewage sludge 90%, then mud is transferred in the enrichment bottle, add 3g analytical pure solid sample anhydrous sodium sulphate in the mud of every 900ml, at the artificial anaerobic environment of making, in its anaerobic condition, gas is N
2: CO
2: H
2Mixed gas, it is 25 ℃ that culture temperature is set, and cultivates 2 weeks of domestication;
B, utilize liquid Postgate B substratum repeatedly to cultivate 4 times, obtain vitriol mixed bacterium (SRB);
C, under step a anaerobic condition with vitriol mixed bacterium (SRB) according to the inoculum size of volume ratio 10 % be inoculated into liquid volume than the compound sample system for the Postgate B substratum of 1:1.5 and stibium-containing wastewater in, the NaOH adjusting pH that is 10 % with volume ratio is 7.0, and the compound sample system is placed in shaking culture 25h termination reaction under the condition that rotating speed is 150rpm;
D, be that 0.2ml/L adds microbial flocculant according to concentration, the rare acid for adjusting pH that is 10 % with volume ratio is 6, water outlet after 2 d that flocculate, its water outlet antimony clearance 97.4%.
Embodiment 3
A, extract the mud that mixes from the anaerobic digester of the east of a river, Urumchi sewage work, then moisture percentage in sewage sludge is transferred to mud in the enrichment bottle 90%, adds the 4g anhydrous sodium sulphate in the mud of every 950ml, at the artificial anaerobic environment of making, in its anaerobic condition, gas is H
2Pure gas, it is 30 ℃ that culture temperature is set, and cultivates 3 weeks of domestication;
B, utilize liquid Postgate B substratum repeatedly to cultivate 5 times, obtain vitriol mixed bacterium (SRB);
C, under step a anaerobic condition with vitriol mixed bacterium (SRB) according to the inoculum size of volume ratio 20 % be inoculated into liquid volume than the compound sample system for the Postgate B substratum of 1:1.2 and stibium-containing wastewater in, the NaOH adjusting pH that is 10 % with volume ratio is 6.8, and the compound sample system is placed in shaking culture 30 h termination reactions under the condition that rotating speed is 200rpm;
D, be that 0.3ml/L adds microbial flocculant according to concentration, the rare acid for adjusting pH that is 10 % with volume ratio is 7, water outlet after 2 d that flocculate, its water outlet antimony 98.5%.
Embodiment 4
A, extract the mud that mixes from the anaerobic digester of the east of a river, Urumchi sewage work, then moisture percentage in sewage sludge is transferred to mud in the enrichment bottle 95%, adds the 5g anhydrous sodium sulphate in the mud of every 1000 ml, at the artificial anaerobic environment of making, in its anaerobic condition, gas is N
2Pure gas, it is 35 ℃ that culture temperature is set, and cultivates 3 weeks of domestication;
B, utilize liquid Postgate B substratum repeatedly to cultivate 5 times, obtain vitriol mixed bacterium (SRB);
C, under step a anaerobic condition with vitriol mixed bacterium (SRB) according to the inoculum size of volume ratio 25 % be inoculated into liquid volume than the compound sample system for the Postgate B substratum of 1:1.4 and stibium-containing wastewater in, the NaOH adjusting pH that is 10 % with volume ratio is 7.0, and the compound sample system is placed in shaking culture 30 h termination reactions under the condition that rotating speed is 200rpm;
D, be that 0.5 ml/L adds microbial flocculant according to concentration, the rare acid for adjusting pH that is 10 % with volume ratio is 7, water outlet after 2 d that flocculate, its water outlet antimony 99.7%.
Claims (4)
1. one kind is utilized the vitriol mixed bacterium to process the method that contains quinquevalence antimony waste water, it is characterized in that following these steps to carrying out:
A, at first extract from the anaerobic digester of sewage work the mud that mixes, then mud is transferred in the enrichment bottle, added the 2-5g anhydrous sodium sulphate in the mud of every 800-1000 ml, under anaerobic, it is 20-35 ℃ that culture temperature is set, and cultivates domestication 1-3 week;
B, utilize liquid Postgate B substratum repeatedly to cultivate 3-5 time, obtain the vitriol mixed bacterium;
C, under anaerobic will tame the good vitriol mixed bacterium of enrichment and be inoculated into liquid volume than in the compound sample system for the Postgate B substratum of 1:1-1:1.5 and stibium-containing wastewater according to the inoculum size of volume ratio 5-25 %, with volume ratio be 10% NaOH to regulate pH be 6.6-7.0, the compound sample system is placed in shaking culture 20-30 h termination reaction under the condition that rotating speed is 100-200rpm;
D, be that 0.1-0.5 ml/L adds microbial flocculant according to concentration, the rare acid for adjusting pH that is 10 % with volume ratio is 5-7, and after the 1-2d that flocculates, water outlet gets final product.
2. method according to claim 1 is characterized in that step a extracts the moisture percentage in sewage sludge that mixes at 80-95% from the anaerobic digester of sewage work.
3. method according to claim 1, is characterized in that the anhydrous sodium sulphate that adds in the mud in step a is the analytical pure solid sample.
4. method according to claim 1, is characterized in that the anaerobic condition in step a is the artificial anaerobic environment of making, and in its anaerobic condition, gas is N
2: CO
2: H
2Mixed gas or CO
2, H
2Or N
2Pure gas.
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|---|---|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107586952A (en) * | 2017-08-25 | 2018-01-16 | 中国科学技术大学 | A kind of processing of Jarosite Residues and method of resource |
| CN109399876A (en) * | 2017-08-16 | 2019-03-01 | 天津大学 | A kind of acclimation method with humic acid reducing power activated sludge |
| CN115385522A (en) * | 2022-08-19 | 2022-11-25 | 浙江巨能环境工程有限公司 | Comprehensive treatment method for circulating cooling water in chemical industrial park |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109399876A (en) * | 2017-08-16 | 2019-03-01 | 天津大学 | A kind of acclimation method with humic acid reducing power activated sludge |
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| CN115385522B (en) * | 2022-08-19 | 2024-05-14 | 浙江巨能环境工程有限公司 | Comprehensive treatment method for circulating cooling water in chemical industry park |
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Application publication date: 20130508 |