Experimental study of the filter bed depth on performances of a slow sand filter used for wastewater advanced treatment
CAO Xiangsheng, LIU Jie, MENG Xuezheng, QU Qingguo
Ecology and Environment . 2010, (3): 566 -569 .  DOI: 10.16258/j.cnki.1674-5906(2010)03-0566-04

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