Elucidating the Influence of Sulfate on Anaerobic Digestion in Waste water Treatment:Current Progress
Sulfur-containing compounds are widely used as a common raw material in industrial production,which leads to the characteristics of high sulfate in industrial wastewater from pharmaceutical,food processing and other industries.The existence of sulfate in wastewater can inhibit the performance of anaerobic treatment,and lead to corrosion of equipment and pipes.This paper summarized the mechanisms of anaerobic sulfate reduction,types of utilized organic carbon,and the potential competition between sulfate reduction and methane production,revealing influence of sulfate on anaerobic digestion.Based on the key points of anaerobic treatment of high-sulfate wastewater,this study further introduces the advances on treatment processes of related wastewater.Meanwhile,this paper summarizes the advantages and shortages of advanced treatment processes on mitigating sulfate inhibition according to their operational characteristics,and provides a reference for the selection of anaerobic treatment technologies of sulfate-containing wastewater.
high-sulfate wastewateranaerobic treatmentinhibition on anaerobic digestionsulfate-reducing bacteriatreatment process
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