Water science and technology : a journal of the International Association on Water Pollution Research · 2009
Concurrent removal of humic acid and o-dichlorobenzene in drinking water by combined ozonation and bentonite coagulation process.
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Gu Li, Zhang Xingwang, Lei Lecheng, Liu Xianjun
Аннотация
Combined ozonation and bentonite coagulation process (COBC) was investigated as a method of concurrently removing humic acid (HA) and o-dichlorobenzene (DCB) from drinking water. In this process, HA and DCB were removed by joint effect of catalytic ozonation and bentonite coagulation. HA removal was highly dependent on the coagulation process while DCB removal was dependent on the oxidation process in COBC. Iron in solution not only acted as a coagulant, but also promoted the formation of HO, which is effective in destroying aromatic chemicals. Bentonite in COBC improved the coagulation process, resulting in an enhancement in the treating efficiency. COBC is proved to be potentially advantageous on dissolved pollutants in drinking water, and appears to have great potential for a wide range of practical applications.