Waste oyster shell as a kind of active filler to treat the combined wastewater at an estuary

查看全文 作　　者：Hongbing [1,2,3]Luo;Gu [2]Huang;Xiaoying [3]Fu;Xiaoling [4]Liu;Daocai [2]Zheng;Jian [4]Peng;Ke [1]Zhang;Bo [1]Huang;Liangqian [1]Fan;Fenghui [1]Chen;Xiubo [2]Sun

机构地区：[1]College of Urban and Rural Construction, Sichuan Agricultural University;[2]China Northwest Municipal Engineering Design, Research Institute Co. Ltd.;[3]State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University;[4]Department of Civil and Geological Engineering, University of Saskatchewan

出　　处：《Journal of Environmental Sciences》索引2013年第25卷第10期,共9页

基　　金：supported by the National Natural Science Foundation of China(No.51278318);the Key Scientific and Technological Projects of Sichuan Provincial Environmental Protection Bureau(No.2011HB001,2012HB002);the Science-Technology Support Plan Program from the Science and Technology Department of Sichuan Province(No.2013SZ0103);the State Key Laboratory of Hydraulics and Mountain River Engineering in China(No.1111);the Youth Foundation of the Sichuan Education Bureau(No.10ZB046) 摘　　要：Estuaries have been described as one of the most difcult environments on Earth. It is difcult to know how to treat the combined wastewater in tidal rivers at the estuary, where the situation is very diferent from ordinary fresh water rivers. Waste oyster shell was used as the active filler in this study in a bio-contact oxidation tank to treat the combined wastewater at the Fengtang Tidal River. With a middle-experimental scale of 360 m3/day, the average removal efciency of COD, BOD, NH3-N, TP and TSS was 80.05%, 85.02%,86.59%, 50.58% and 85.32%, respectively, in this bio-contact oxidation process. The living microbes in the biofilms on the waste oyster shell in this bio-contact oxidation tank, which were mainly composed of zoogloea, protozoa and micro-metazoa species, revealed that waste oyster shell as the filler was suitable material for combined wastewater degradation. This treatment method using waste oyster shell as active filler was then applied in a mangrove demonstration area for water quality improvement near the experiment area, with a treatment volume of 5 × 103m3/day. Another project was also successfully applied in a constructed wetland, with a wastewater treatment volume of 1 × 103m3/day. This technology is therefore feasible and can easily be applied on a larger scale. 关键词：活性填料合流污水牡蛎壳河口治疗生物接触氧化池合并潮汐河流

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Waste oyster shell as a kind of active filler to treat the combined wastewater at an estuary

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