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Method for treating quintavalent-antimony-containing wastewater with sulfate mixed bacteria

A technology of mixed bacteria and sulfate, applied in metallurgical wastewater treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc., can solve the problems of secondary pollution, poor removal effect, high cost, etc., achieve high effect and low cost , the effect of simple operation

Inactive Publication Date: 2013-05-08
XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these technologies generally have problems such as poor removal effect, high cost, and easy to cause secondary pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] a. Extract uniformly mixed sludge from the anaerobic digester of the East Wastewater Treatment Plant in Urumqi. The moisture content of the sludge is 80%, and then transfer the sludge to an enrichment bottle, and add 2g of analytical grade to every 800 ml of sludge. Solid sample anhydrous sodium sulfate, in artificial anaerobic environment, the gas in the anaerobic condition is CO 2 single gas, set the culture temperature to 20°C, and cultivate and acclimatize for 1 week;

[0026] B, utilize liquid Postgate B culture medium to carry out repeated culture 3 times, obtain sulfate mixed bacteria (SRB);

[0027] C, under step a anaerobic condition, inoculate sulfate mixed bacteria (SRB) according to the inoculum size of volume ratio 5% to the mixed sample system of Postgate B substratum and antimony-containing waste water that liquid volume ratio is 1:1, use The volume ratio was 10% NaOH to adjust the pH to 6.6, and the mixed sample system was shaken at a speed of 100 rpm f...

Embodiment 2

[0030] a. Extract uniformly mixed sludge from the anaerobic digester of the East Wastewater Treatment Plant in Urumqi. The moisture content of the sludge is 90%, and then transfer the sludge to an enrichment bottle, and add 3g of analytically pure solid samples to every 900ml of sludge Anhydrous sodium sulfate, in an artificial anaerobic environment, the gas in the anaerobic condition is N 2 :CO 2 :H 2 Mixed gas, set the culture temperature to 25°C, and cultivate and acclimatize for 2 weeks;

[0031] B, utilize liquid Postgate B culture medium to carry out repeated culture 4 times, obtain sulfate mixed bacteria (SRB);

[0032] C, under step a anaerobic condition, inoculate sulfate mixed bacteria (SRB) according to the inoculum size of volume ratio 10% to the mixed sample system of Postgate B substratum and antimony-containing waste water that liquid volume ratio is 1:1.5, use The volume ratio was 10% NaOH to adjust the pH to 7.0, and the mixed sample system was shaken and c...

Embodiment 3

[0035] a. Extract uniformly mixed sludge from the anaerobic digester of the East Wastewater Treatment Plant in Urumqi. The moisture content of the sludge is 90%, and then transfer the sludge to an enrichment bottle, and add 4g of anhydrous sulfuric acid to every 950ml of sludge Sodium, in the artificial anaerobic environment, the gas in the anaerobic condition is H 2 single gas, set the culture temperature to 30°C, and cultivate and acclimatize for 3 weeks;

[0036]B, utilize liquid Postgate B culture medium to carry out repeated cultivation 5 times, obtain sulfate mixed bacteria (SRB);

[0037] C, under step a anaerobic condition, inoculate sulfate mixed bacteria (SRB) according to volume ratio 20% inoculum size into the mixed sample system of Postgate B substratum and antimony-containing waste water that liquid volume ratio is 1:1.2, use The volume ratio was 10% NaOH to adjust the pH to 6.8, and the mixed sample system was shaken at a speed of 200 rpm for 30 h to terminate ...

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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 [0001] The invention relates to a method for treating waste water containing pentavalent antimony by using sulfate mixed bacteria (SRB), and belongs to the technical field of environmental protection sewage purification treatment. Background technique [0002] Antimony is a metalloid that belongs to Group V of the periodic table of elements. Antimony and its compounds are potentially carcinogenic and can cause lesions in the liver, skin, respiratory and cardiovascular systems, and are priority pollutants to be controlled. Antimony compounds are mainly used as flame retardants in textiles, paper, adhesives, brake pads and other products. [0003] China is a country with large reserves of antimony ore, accounting for 52.8% of the world's antimony ore, about 9.5 × 10 5 Ton. At present, the global production and demand for antimony are increasing year by year. Antimony ore products also increased by 8.0×10 in 1994 4 tons increased to 1.2×10 in 2010 5 ton...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/34C02F103/16
Inventor 潘响亮王华伟高磊宋文娟张道勇
Owner XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI