Method for producing sulfur by artificially strengthening biological disproportionation of elemental sulfur and method for realizing biological removal of heavy metals in wastewater

• Main Authors: ZOU JIAHUI, QIU YANYING, JIANG FENG
• Format: Patent
• Language: Chinese; English
• Published: 19.04.2022
• Subjects: BEER; BIOCHEMISTRY; CHEMISTRY; COMPOSITIONS THEREOF; CULTURE MEDIA; ENZYMOLOGY; FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE; METALLURGY; MICROBIOLOGY; MICROORGANISMS OR ENZYMES; MUTATION OR GENETIC ENGINEERING; PROCESSES USING MICROORGANISMS; PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS; SPIRITS; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE; VINEGAR; WINE

The invention discloses a method for producing sulfur by artificially strengthening biological disproportionation of elemental sulfur, which comprises the following steps: in an anoxic or anaerobic environment, planting sulfur disproportionated bacteria and a sulfur filler, controlling the temperature and alkalinity of a water environment in an elemental sulfur disproportionation tank, and promoting the sulfur disproportionated bacteria to stably grow and continuously generate soluble sulfide. The method comprises the following steps: mixing the sulfide obtained by the sulfur production method with heavy metal wastewater in a reaction tank, combining the sulfide with heavy metal ions to form metal sulfide, or reducing high-valence metal into low-valence metal and forming metal oxide for further precipitation; finally, the heavy metals in the sewage are removed. The sulfur disproportionated bacteria are introduced into the field of heavy metal wastewater treatment for the first time, sulfide is stably and sust