Improving sewage sludge compost process and quality by carbon sources addition

被引:32
|
作者
Meng, Liqiang [1 ,2 ]
Li, Weiguang [3 ,4 ]
Zhang, Shumei [1 ,2 ]
Zhang, Xiancheng [1 ]
Zhao, Yi [3 ]
Chen, Li [3 ]
机构
[1] Heilongjiang Acad Sci, Inst Microbiol, Harbin 150010, Peoples R China
[2] Heilongjiang Acad Sci, Inst Adv Technol, Harbin 150020, Peoples R China
[3] Harbin Inst Technol, Sch Environm Engn, Box 2602,73 Huanghe Rd, Harbin 150090, Heilongjiang, Peoples R China
[4] Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China
基金
中国国家自然科学基金;
关键词
D O I
10.1038/s41598-020-79443-3
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
In present study, the effects of carbon sources on compost process and quality were evaluated in the lab-scale sewage sludge (SS) composting. The composting experiments were performed for 32 days in 5 L reactors. The results showed that carbon sources could change the nitrogen conversion and improve the compost quality. Especially, the readily degradable carbon source could promote organic matter degradation, improve nitrogen conversion process and accelerate compost maturation. The addition of glucose and sucrose could increase dissolved organic carbon, CO2 emission, dehydrogenase activity, nitrification and germination index during the SS composting. That's because glucose and sucrose could be quickly used by microbes as energy and carbon source substance to increase activity of microbes and ammonia assimilation. What's more, the NH3 emission was reduced by 26.9% and 32.1% in glucose and sucrose treatments, respectively. Therefore, the addition of readily degradable carbon source could reduce NH3 emission and improve compost maturity in the SS composting.
引用
收藏
页数:8
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