Biological pretreatment of Yellow River water

Article type: Research Article

Authors: XIE, Shu-guang | TANG, Xiao-yan | WU, Wei-zhong | WEN, Dong-hui | WANG, Zhan-sheng

Affiliations: Department of Environmental Sciences, College of Environmental Sciences, Peking University, Beijing 100871, China | Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China

Note: [] Corresponding author. E-mail: [email protected]

Abstract: Bio-ceramic filter (BF) and moving-bed biofilm reactor(MBBR) were used for biological pretreatment of Yellow River water in this study. The BF only had slight advantage over MBBR for TOC and ammonia removal. However, like UV_{254}, the average removal rate of THMFP in the BF was much higher than that in the MBBR. UV_{254} removal did not show obvious correlation with trihalomethane formation potential (THMFP) removal. Hexachlorocyclohexane could be effectively removed in both BF and MBBR. As for diatom and cyanobateria removal the MBBR had better performance than the BF, which was contrary to the average chlorophyll-a (Chi-a) removal rate. The proposal was made in this study that biological flocculation and sedimentation of sloughed biofilm should play a more important role on algae removal in the MBBR than in the BF. The BF and MBBR could effectively remove microcystins. Moreover, MBBR could be a promising technology for biological pretreatment.

Keywords: bio-ceramic filter (BF), moving-bed biofilm reactor (MBBR), Yellow River, biological pretreatment

Journal: Journal of Environmental Sciences, vol. 17, no. 4, pp. 557-561, 2005