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The disinfection effect of Copepod of zooplankton with chlorine dioxide was compared with that of chlorine. The experimental results showed that chlorine dioxide was more effective to kill Copepod. Copepod was completely killed by 1.0mg/L of chlorine dioxide for contacting 30 min but the required dosage were about 2.0mg/L of liquid chlorine. The body structure variety of Copepod indicated that the...
Humic acid (HA) was considered to be the main precursor of disinfection by-products (DBPs) in chlorination. In this study, an effective and economic method of preparing TiO2 film was successfully developed for adsorption of HA. The crystal structure and surface morphology of the TiO2 film were characterized by X-ray diffraction (XRD) and atomic force microscopy (AFM). The effects of some factors such...
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...
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