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Through analyzing the influence of bio-ferric content on activated sludge performance in membrane bioreator(MBR), the results showed: sludge dehydrogenase activity ascended along with bio-ferric content augments in sludge which the influence of bio-ferric content in supernatant was similar as well; while the influence of bio-ferric content on specific oxygen uptake rate(SOUR) was contrary to that...
Secondary treatment of acid mine drainage (AMD) from a copper mine in China which has very low-concentration heavy metal ions and high conductivity (2,800 μs/cm), was attributed to the high concentration of many dissolved monovalent and divalent ions. Sulfate-reducing bacteria (SBR) which has become an active research area in recent years were used to remove heavy metal ions and reclaim AMD. Under...
A series of experiments were performed to remove toluene from a gaseous influent at normal temperature and atmospheric pressure by non-thermal plasma generated dielectric barrier discharge coupled with nano-Ba0.8Sr0.2Zr0.1Ti0.9O3 catalyst. We were innovative to prepare nano-Ba0.8Sr0.2Zr0.1Ti0.9O3 catalyst by ourselves and use it in the plasma reactor. The best removal efficiency of toluene arrives...
Ammonia addition and pH depression can inhibit the formation of bromate in ozonated drinking water by reacting with free bromine (HOBr/OBr-), an intermediate in bromate formation, to form bromamines and other bromoorganic disinfection byproducts. This study was performed to assess the effects of ammonia and pH value combinations on the formation of bromate and THMs during ozonation and chlorination...
The properties of potassium zinc hexacyanoferrate absorbing cesium were studied in this paper including particle size distribution, isotherm, kinetics and the mechanism of the adsorption. The results showed that Freundlich isotherm and pseudo-second order model were better to describe the adsorption behavior of potassium zinc hexacyanoferrate adsorbing cesium. The lab-scale test further indicated...
The influence of Ca(ClO)2 on performance of simultaneous desulfurization and denitrification of urea aqueous solutions were investigated in the self-designed small-scale bubbling reactor, and kinetics parameters and equations of simultaneous desulfurization and denitrification of urea/Ca(ClO)2 were calculated through analyzing reaction products. The results show that with additive concentration raised,...
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