Biological desulphurization technology

Abstract

The invention relates to a biological desulphurization technology which can be used for removing SO2 from smoke. SO2 in the smoke is dissolved in water to generate sulfite and sulfate; under the conditions of an anaerobic environment and an external carbon source, sulfate reducing bacteria (SRB) reduces the sulfite and the sulfate into sulfide; and then, under the aerobiotic condition, the sulfide is converted into elemental sulfur under the action of desulfurization microorganism (colorless thiobacillus), precipitating and separating are carried out, and thus, the elemental sulfur is removed from a system. The technology realizes the elemental sulfur recovery through efficiency biological reaction, thus, the SO2 pollution is effectively solved, waste recycling is realized, and the unification of environmental benefit and economic benefit is finally realized.

Description

technical field [0001] A biological desulfurization technology, the invention can be used for SO in flue gas 2 removal. Background technique [0002] In recent years, with the rapid development of urbanization and industrialization, the emission of waste gas has increased year by year, making the problem of air pollution more and more serious. Among them, SO 2 The discharge problem of phosphate has become one of the most concerned hotspots in the world. It not only causes serious environmental pollution, but also is the main substance that causes acid rain. my country is a coal energy powerhouse in the world, and it is SO 2 The country with the largest emissions, if not strictly controlled, SO 2 Emissions will become an important factor restricting my country's national economic development and social development. [0003] SO in flue gas 2 When meeting with water, it will generate sulfite and sulfate. Sulfate produces H in an anaerobic environment 2 S, severely corro...

AI Technical Summary

Problems solved by technology

Sulfate produces H under anaerobic conditions 2 S, severely corrodes treatment facilities and drainage pipes, and deodorizes, seriously pollutes the atmosphere, and will cause adverse reactions after inhalation, which will seriously endanger life

In addition, the discharge of sulfate-containing wastewater into the water body will acidify the receiving water body, lower the pH value, 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

Images