Abstract:Biological pre-treatment has been widely used in pollution-induced water shortage areas in south China, in this process, the microbial carrier are mainly suspended packing and elastic packing. In order to investigate the efficiency and micro biodiversity of the two packing, taking the micro-polluted raw water of Yangtze River Delta for example, researches had been done on the pollution removal ability, mud accumulation and flushing, the growth and distribution of microfauna of the two packing through full-scale test and pilot test. The results showed that, on the base of same water resource and same operation parameter in Summer and Autumn, the average ammoniacal nitrogen removal rate of the suspended packing and the elastic packing were about 80% and 65%, the average CODMn removal rate were about 18% and 16%; the species and quantity of microfauna on the suspended packing were less than that of the elastic one, and the social type microfauna could rarely be found. The full-scale experiment showed that, when the water quality was poor, the ammoniacal nitrogen and CODMn removal rate of the suspended packing were higher than that of the elastic one by 5%-10%; the mass growth of social type microfauna on the suspended packing never happened, and regular backwash was unnecessary; while the mass growth of bryozoan happened in some areas of the elastic packing, and its mud accumulation was severe and need backwash regularly, sometimes water blast gun was even used. So the suspended packing is fit for the biological pre-treatment of the micro-polluted raw water.
朱洁, 东刘成, 陈洪斌, 何群彪. 不同填料类型污染源水生物预处理的比较[J]. 中国环境科学, 2012, 32(3): 447-453.
ZHU Jie, DONG Liu-Cheng, CHEN Hong-Bin, HE Qun-Biao. Comparative investigation of polluted raw water biological pretreatment with two kinds of packings. CHINA ENVIRONMENTAL SCIENCECE, 2012, 32(3): 447-453.