Insights into effects of thermotolerant nitrifying and sulfur-oxidizing inoculants on nitrogen-sulfur co-metabolism in sewage sludge composting  

作　　者：Tingting Hou Yujie Zhou Rongchun Du Jiali Liu Weiguang Li Shumei Zhang Muzi Li Junhong Chu Liqiang Meng 

机构地区：[1]Institute of Microbiology,Heilongjiang Academy of Sciences,Harbin 150010,China [2]Hebei University of Environmental Engineering,Hebei Key Laboratory of Agroecological Safety,Qinhuangdao 066102,China [3]School of Environment,Harbin Institute of Technology,Harbin 150090,China

出　　处：《Journal of Environmental Sciences》2024年第10期76-86,共11页环境科学学报（英文版）

基　　金：This work was supported by the Wild Goose Array Special Projects(No.2023STYZ002);Heilongjiang Provincial Research Institute Project(Nos.2023SSKY001 and 2022SSKY003).

摘　　要：In this study,high temperature thermotolerant nitrifying bacteria(TNB)and high temperature thermotolerant sulfide oxidizing bacteria(TSOB)were obtained from compost samples and inoculated into sewage sludge(SS)compost.The effects of inoculation on physical and chemical parameters,ammonia and hydrogen sulfide release,nitrogen form and sulfur compound content change and physical-chemical properties during nitrogen and sulfur conversion were studied.The results showed that inoculation of TNB and TSOB increased the temperature,pH,OM degradation,C/N ratio and germination index(GI)of compost.Compared with the control treatment(CK),the addition of inoculants reduced the release of NH_(3) and H_(2)S,and transformed them into nitrogen and sulfur compounds,the hydrolysis of polymeric ferrous sulfate was promoted,resulting in relatively high content of sulfite and sulfate.At the same time,the physical and chemical properties of SS have a strong correlation with nitrogen and sulfur compounds.

关 键 词：Sewage sludge COMPOSTING Inoculation Thermotolerant nitrifying bacteria Thermotolerant sulfurized oxidizing bacteria 

分 类 号：X703[环境科学与工程—环境工程]