【摘 要】
：
The performance of UV/H2O2, UV/O3 and UV/H2O2/O3 oxidation systems for treating spent caustic froman ethylene plant was investigated. In UV/H2O2 system, with th
【机 构】
：
Research Center for Ecg-Environmental Sciences,Department of Environmental Science and Engineering
论文部分内容阅读
The performance of UV/H2O2, UV/O3 and UV/H2O2/O3 oxidation systems for treating spent caustic froman ethylene plant was investigated. In UV/H2O2 system, with the increase of H2O2 dosage, removal efficiencies ofCOD and the ratio of biochemical oxygen demand(BOD) to chemical oxygen demand(COD) of the effluent wereincreased and a better performance was obtained than the H2O2 system alone. In UV/H2O2 system, removalefficiency of COD reach 68% under the optimum condition, and BOD/COD ratio was significantly increased from0.22 to 0.52. In UV/O3 system, with the increase of O3 dosage, removal efficiency of COD and BOD/COD ratiowere increased, and a better performance was obtained than the O3 system alone. Under the optimum condition,removal efficiency of COD was 54%, and BOD/COD ratio was significantly increased from 0.22 to 0.48. In UV/H2O2/O3 system, COD removal efficiency was found to be 22.0% higher than UV/O3 system.
其他文献
KARST, the Chinese SKA concept, consists of some 30 individual FAST-type elements to be set up in a karst region of Guizhou Province. A crucial question is how
Preliminary studies on microzooplankton grazing were conducted with dilution method in Jiaozhou Bay from summer 1998 to spring 1999. Four experiments were carri
ZrO2-Al2O3 composite oxides and supported Ni catalysts were prepared , and characterized by N2adsorption/desorption, X-ray diffraction (XRD) and X-ray photoelec
大肠杆菌发酵表达的TRAIL蛋白经过两步纯化可得到纯度95%以上的活性蛋白,得率为40%.天然TRAIL蛋白为同源三聚体形式,在三聚体中心隐蔽结合Zn可维持TRAIL蛋白天然结构的稳定性
Carbon nanotubes prepared by catalytic chemical vapor deposition of hydrocarbon at 650℃ show goodadsorption capability of Pb2+ , Cu2+ and Cd2+ ions from aqueou
The radical transport of chemical concentration in porous media with dispersion and adsorption was studied in this paper. Using Langmuirs adsorption model, the
The effect of seawater salinity on nitrite accumulation in short-range nitrification to nitrite as the end productwas studied by using a SBR. Experimental resul
The effect of temperature on the life history characteristics of amictic females (AF), unfertilized mictic females (UMF) and fertilized mictic females (FMF) in
A silicagel fractionation procedure for environmental sample extracts, which separates chlorinatedhydrocarbons(CHCs) and organophosphorus, pyrethroid pesticides
Growth and uptake of exogenous phosphate by Microcystis aeruginosa in batch culture under differenttemperature, photoperiod, and turbulence were studied by the