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Bromate is a byproduct of water disinfection that is produced when waters contain bromide treated with ozone. To investigate the level of the toxicity of bromate and find the most sensitive indicators in a short time, a series of toxicological assessments were conducted including the acute toxicity, cumulative toxicity, genetic toxicity and subacute toxicity of bromate (using Potassium Bromate to...
The harm to raw water supply and treatment of Limnoperna fortunei is a new problem. It not only has influence on the ecosystem of water source and the water quality and resistance in the transmittion process, but also does harm to the facilities of water treatment. Through analysis of lots of literatures, the biological characters and damages of Limnoperna fortunei are summarized in this paper. Meanwhile,...
Currently synergistic pollution occurs in the presence of cyanobacteria and synthetic organic compound in water body. Consequently, it is of great significance to reveal the partition of persistent organic pollutants in water phase and algae phase for understanding mechanisms of partition and transformation of persistent organic pollutants in natural water environment. In this study bioaccumulation...
The formation of bromate by ozonation-biological activated carbon process is a problem of drinking water treatment. By pilot test, the influence of bromide ion concentration, contact time of ozone column, ozone dosage, Ct value, changes of water quality and adsorption time of activated carbon column on bromate formation and control were investigated. The results showed that when [Br-]=100~500??g/L,...
Chironomus kiiensis larvae which cannot be exterminated by conventional disinfection process propagates prolifically in eutrophic water body, and it therefore turns to be a potential problem encountered in drinking water quality. In this paper, the quantitative experimental studies were carried out on inactivation of the fourth instar larvae of Chironomus kiiensis in the raw water using oxidants,...
Chironomus kiiensis larvae which cannot be exterminated by conventional disinfection process propagates prolifically in eutrophic water body, and it therefore turns to be a potential problem encountered in drinking water quality. In this paper, comparative experiments on the inactivation of the fourth instar larvae of Chironomus kiiensis in distilled water by chlorine, ozone and chlorine were conducted...
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