Biological desulfurizing technology for transferring sulfur-containing compound into elemental sulfur

Abstract

Disclosed is the bio-desulphurization technology for conversing the sulfur compounds to the elemental sulfur, which can be used to remove the sulfur compounds in the smoke and waste water. The sulfite and sulfate are produced by dissolving the SO2 in the smoke in water; the sulfate reducing bacteria (SRB) deoxidize the sulfite and sulfate to sulfide under the anaerobic environment and the condition of external carbon source; then the sulfid is conversed to the elemental sulfur by the function of desulfuration microorganism (colorless thiobacilli) under the aerobic condition, and then the sulfur element can be removed from the system after deposition and separation. The invention achieves the recovery of elemental sulfur through the efficient biological reaction, thus effectively solving the pollution problem of SO2, realizing resource recovery of waste, and finally achieving the unification of environmental benefits and economic benefits.

Description

technical field [0001] A biological desulfurization technology for converting sulfur-containing compounds into elemental sulfur. The invention can be used for removing sulfur-containing compounds in flue gas and waste water. Background technique [0002] Sulfate produces H in an anaerobic environment 2 S, severely corrodes treatment facilities and drainage pipes, and has a foul smell, seriously pollutes the atmosphere, and will cause adverse reactions after inhalation, and severe cases will be life-threatening. In addition, the discharge of sulfate wastewater into the water body will acidify the receiving water body, lower the pH, and endanger aquatic organisms; discharge into the farmland will destroy the soil structure, make the soil harden, reduce the yield of crops and reduce the quality of agricultural products. At present, the groundwater in many cities in my country has been polluted by sulfates to varying degrees, and seeking effective sulfate wastewater treatment p...

AI Technical Summary

Problems solved by technology

[0005] At present, there are still the following bottlenecks in desulfurization technology that need to be broken through: First, the cost of raw materials for desulfurization is high or the source is limited, such as ammonia water in ammonia desulfurization, magnesium oxide in magnesium oxide, consumption of sodium carbonate or sodium hydroxide in sodium alkali method, gypsum method The price of limestone and so on has been rising all the way; the second is that there are secondary pollution problems to varying degrees, because most of the desulfurization agent is lime, and the desulfurization product is generally calcium sulfite, so there is re-release of SO 2 danger

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