期刊
3RD INTERNATIONAL CONFERENCE ON ENERGY AND ENVIRONMENT RESEARCH, ICEER 2016
卷 107, 期 -, 页码 357-362出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.egypro.2016.12.176
关键词
Oxidant; oxidation coefficient; sewage sludge; supercritical water
资金
- Projects from National Natural Science Foundation of China [21576219]
- Special Financial Grant from the China Postdoctoral Science Foundation [2014T70922]
- Fundamental Research Funds for the Central Universities
- National Science Foundation for Post-doctoral Scientists of China [2013M540748]
- Shaanxi Province Postdoctoral Science Foundation
Supercritical water treatment is a promising technology for sewage sludge disposal. The influences of oxidation coefficient (OC) as well as temperature on products of sewage sludge treatment in supercritical water were studied systematically. The results show that CO2 yield obviously increased with raising OC or temperature. Oxidant helped to convert N-containing compounds into N-2. A small amount of oxidant increased H-2 yield but excess oxidant decreased it. OC had significant effect on the COD ( chemical oxygen demand) and NH3-N (ammonia nitrogen) concentration of liquid products. Most of organic compounds disappeared at OC=1.0 as temperature changed from 450 to 500 degrees C, and diethyl phthalate was main stubborn substance in the liquid phase. The contents of some elements (such as Si, Al and Ca) in solid residue was almost double compared with those in dry basis SS. (C) 2016 The Authors. Published by Elsevier Ltd.
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