Method for improving bio-availability of sulfur by means of converting sulfur into polysulfide

• Main Authors: CHEN MENGLI, ZHANG ZEFENG, GUO JIAHUA, QIU YANYING, LIANG SHUANG, HE JIAHAO, ZHANG YIPING, JIANG FENG
• Format: Patent
• Language: Chinese; English
• Published: 21.09.2016
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS

The invention belongs to the field of wastewater treatment, and provides a method for improving bio-availability of sulfur by means of converting the sulfur into polysulfide. The method is characterized in that solid elemental sulfur in an aqueous solution is quickly dissolved and is converted into the polysulfide under normal temperature and normal pressure by means of controlling a pH value and an initial HS<-> concentration, so that the bio-availability of the sulfur is improved. The method disclosed by the invention has the advantages that a synthesis process of dissolved zero-valent sulfur is explained, the biological reduction rate of the elemental sulfur is improved by the dissolved zero-valent sulfur, meanwhile the sulfide production rate is also accelerated, and the synthesis rate of the dissolved zero-valent sulfur is increased with the increasing of the biological reduction rate of the elemental sulfur, therefore a positive feedback reaction among the biological reduction rate of the elemental sulf