Lei Jin yong simulated the polluted river with main sewage, and used the composite packing of
pebbles and zeolite for bio-film formation, which got good results in terms of degradation of organic
matter and ammonia and nitrogen, etc. [20]. Wang Xuejiang used TX-type cylindrical suspended carrier
whose density approximately equal to water to purify the tributary of Suzhou river, and the method was
suitable for the transformation process of biological aeration treatment of sewage on the river directly
[21]. Based on the structural modification and flowing optimization of suspended-carrier reactor which
developed by themselves, Wang Rongchang applied it to the in-situ remediation of the water quality of
polluted river [22]. The use of biological streamer treatment technology to construct sewage treatment
scattered facilities in the river achieved the purpose of eliminating the black-odor of the water, and the
bio-ribbon technology has been applied in the New Island Creek successfully [23]. Xiao Yutang and his
group used the biological contact oxidation in the pretreatment of the micro-polluted raw water of Yao
Jiang, and the bio-film thickness of the water was 0.3-0.5mm, the effluent was 0.1-0.3mm, when the
dissolved oxygen of the water was controlled in 7-9mg/L, the bio-film of the filler was full of aerobic
layer with high aerobic oligotrophic microorganisms mainly [24]. Biological contact oxidation of flexible
three-dimensional packing and oxygen-rich microporous aeration were used to repair the polluted Chuan
Yang River of Shanghai. It is observed that the biofacies were rich on the bio-film, with small thickness,
the biodegradation rate of ammonia and nitrogen of pollutants was high, and the aerobic bio-film of
packing has played the main role to remove the pollutants [25].
Lei Jin yong simulated the polluted river with main sewage, and used the composite packing ofpebbles and zeolite for bio-film formation, which got good results in terms of degradation of organicmatter and ammonia and nitrogen, etc. [20]. Wang Xuejiang used TX-type cylindrical suspended carrierwhose density approximately equal to water to purify the tributary of Suzhou river, and the method wassuitable for the transformation process of biological aeration treatment of sewage on the river directly[21]. Based on the structural modification and flowing optimization of suspended-carrier reactor whichdeveloped by themselves, Wang Rongchang applied it to the in-situ remediation of the water quality ofpolluted river [22]. The use of biological streamer treatment technology to construct sewage treatmentscattered facilities in the river achieved the purpose of eliminating the black-odor of the water, and thebio-ribbon technology has been applied in the New Island Creek successfully [23]. Xiao Yutang and hisgroup used the biological contact oxidation in the pretreatment of the micro-polluted raw water of YaoJiang, and the bio-film thickness of the water was 0.3-0.5mm, the effluent was 0.1-0.3mm, when thedissolved oxygen of the water was controlled in 7-9mg/L, the bio-film of the filler was full of aerobiclayer with high aerobic oligotrophic microorganisms mainly [24]. Biological contact oxidation of flexiblethree-dimensional packing and oxygen-rich microporous aeration were used to repair the polluted ChuanYang River of Shanghai. It is observed that the biofacies were rich on the bio-film, with small thickness,the biodegradation rate of ammonia and nitrogen of pollutants was high, and the aerobic bio-film ofpacking has played the main role to remove the pollutants [25].
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