期刊
BIORESOURCE TECHNOLOGY
卷 265, 期 -, 页码 8-16出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.05.032
关键词
Waste activated sludge; Low organic content; Potassium Monopersulfate; Biological enzyme; Microbial community
资金
- Doctor Foundation of Zhengzhou University of Light Industry [13501050052]
- project of incubation of Zhengzhou University of Light Industry [13306000017]
- foundation of Henan province natural science [182300410140]
Waste activated sludge with low organic content (WAS-LOC) always led to the failure of anaerobic fermentation. A potentially practical technology based on center dot SO4-, i.e. Potassium Monopersulfate (PMS) was used into WASLOC anaerobic fermentation system and had been presented to greatly improve both the intracellular and extracellular constituents, which improved the biological enzyme activity and produced a mass of short-chain fatty acids (SCFAs). Results showed that the maximal SCFAs production was 716.72 mg chemical oxygen demand (COD)/L (0.08 mg PMS/mg SS), which increased to 43.70 times comparing to that of 0.00 mg PMS/mg SS level (16.40 mgCOD/L). The activities of biological enzymes increased 1.42 times for protease, 4.38 times for alpha-glucosidase, 2.1 times for alkaline phosphatase, 1.70 times for acidic phosphatase and 1.37 times for dehydrogenase respectively comparing to natural fermentation system, but the coenzyme 420 was restrained prominently. PMS positively enriched the abundance of microbial community responsible for WAS-LOC hydrolysis and SCFAs production.
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