Shanghai Environmental Science Academy

Shanghai, China

Shanghai Environmental Science Academy

Shanghai, China
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Li D.,Shanghai Environmental Science Academy | Sun C.J.,Shanghai Environmental Science Academy | Ye J.F.,Shanghai Environmental Science Academy
Advanced Materials Research | Year: 2013

In this study efficiency of organic matter in municipal wastewater sludge treated by supercritical water is investigated. Influences of main reaction parameters, including temperature (380~500°C), pressure (23-30 MPa), residence time (1-10 mins), oxidant dose (100%-200%), were evaluated. Univariate Analysis was applied in order to consider each parameter's impact on CODcr removal. Study results indicate that 97.89% of CODcr in the sludge sample can be removed in 10min at 500°C, 30MPa and 200% H2O2 oxidant excess dose. Temperature, pressure, resident time are main factors to affect the reaction, while oxidant dose has a little effect on removal of CODcr in municipal wastewater sludge. After SCWO process, the organic matter in municipal wastewater sludge can be removed effectively by super critical water oxidation. © (2013) Trans Tech Publications, Switzerland.


Li D.,Shanghai Environmental Science Academy | Sun C.J.,Shanghai Environmental Science Academy | Chen M.M.,Shanghai Environmental Science Academy
Advanced Materials Research | Year: 2013

Sustainable ecosystem organizes itself to fit in the environment by assimilating nature energy with little technology help, water ecosystem in the Mengqing park is such a nature system which integrate both biodiversity and economic values together. The work of designing of water ecosystem in Mengqing park is conceptually based on the theory of ecological engineering, presents the natural principles of ecosystem design, discusses seven major ecological indicators including hydrology, soil substrate, oxygen, vegetation, biotical, chemical, and bank construction. © (2013) Trans Tech Publications, Switzerland.

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