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| Multi soil layering filter and its performance in rural domestic sewage treatment |
| GUO Jun-yuan, ZHOU Yu-ling, JIANG Shi-lin, ZHANG Guo-jun, YANG Lan, ZHANG Lu, WEI Jing, HE Shan |
| College of Resources and Environment, Chengdu University of Information Technology, Chengdu 610225, China |
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Abstract The MSL was constructed to treat rural domestic wastewater. Biofilm colonization, effects of hydraulic loading rate (HLR) on the treatment of domestic wastewater by the MSL, and biofilm characteristics during the working process of the MSL were investigated. The biofilm colonization was success after 28d of influent by "continuous manner", and at this moment, removal efficiencies of COD, ammonia, TN and TP reached 84.5%, 74.7%, 66.7%, and 76.4%, respectively. During the treatment process of the domestic wastewater, the MSL exhibited a strong adaptability on the variation of HLR. The average removal efficiencies of COD, ammonia, TN, TP reached 93.4%, 94.9%, 80.4%, and 94.7%, respectively, which meet to the 1A discharge standard of the Discharge standard of pollutants for municipal wastewater treatment plant (GB 18918-2002), when the HLR was adjusted to 400L/(m2·d). Pathways of the removal of COD, ammonia, TN and TP by the MSL showed that the biological decomposition and biotransformation processes of microorganisms were the most important pathway for the removal of COD, ammonia, and TN, while TP was mainly removed by the chemical reaction with iron irons. q-PCR showed that the nitrifying bacteria in the biofilm were about 35.5% of the total flora.
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Received: 05 February 2018
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| [1] |
Sato K, Iwashima N, Wakatsuki T, et al. Quantitative evaluation of treatment processes and mechanisms of organic matter, phosphorus, and nitrogen removal in a multi-soil-layering system[J]. Soil Science and Plant Nutrition, 2011,57(3):475-486.
|
| [2] |
魏才倢,吴为中,陶淑,等.多级土壤渗滤系统处理滇池入湖河水的研究[J]. 中国给水排水, 2010,26(9):104-111.
|
| [3] |
严森,吴为中,杨春平,等.水力负荷及固相碳源对BAF+多级土壤渗滤组合工艺处理污水的影响研究[J]. 环境科学学报, 2012,32(8):1793-1800.
|
| [4] |
罗伟.沸石层滴滤-多介质土壤层系统处理分散生活污水的研究[D]. 长沙:湖南大学, 2014.
|
| [5] |
郭俊元,周明杰,甘鹏飞,等.沸石生物滴滤器处理分散式生活污水的性能及生物膜特征研究[J]. 中国环境科学, 2016,36(12):3601-3609.
|
| [6] |
Luo W, Yang C P, He H J, et al. Novel two-stage vertical flow biofilter system for efficient treatment of decentralized domestic wastewater[J]. Ecological Engineering, 2014,64(11):415-423.
|
| [7] |
GB18918-2002城镇污水处理厂污染物排放标准[S].
|
| [8] |
He S, Xue G, Kong H. The performance of BAF using natural zeolite as filter media under conditions of low temperature and ammonium shock load[J]. Journal of hazardous materials, 2007,143(1):291-295.
|
| [9] |
Krasnits E, Beliavsky M, Tarre S, et al. PHA based denitrification:municipal wastewater vs. acetate[J]. Bioresource Technology, 2013, 132(132):28-37.
|
| [10] |
Hu B, Wheatley A, Ishtchenko V. The effect of shock loads on SAF bioreactors for sewage treatment works[J]. Chemical Engineering Journal, 2011,166(1):73-80.
|
| [11] |
Schipper L A, Robertson W D, Gold A J, et al. Denitrifying bioreactors-an approach for reducing nitrate loads to receiving waters[J]. Ecological Engineering, 2010,36(11):1532-1543.
|
| [12] |
Kellogg D Q, Gold A J, Cox S. A geospatial approach for assessing denitrification sinks within lower-order catchments[J]. Ecological Engineering, 2010,36(11):1596-1606.
|
| [13] |
匡颖,董启荣,王鹤立.海绵铁与火山岩填料A/O生物滴滤池脱氮除磷的中试研究[J]. 水处理技术, 2012,38(9):50-53.
|
| [14] |
刘建平.组合生物膜法处理分散式生活污水研究[D]. 合肥:合肥工业大学, 2006.
|
| [15] |
李洋.磁絮凝分离-生物滴滤组合工艺处理小城镇污水研究[D]. 哈尔滨:哈尔滨工业大学, 2014.
|
| [16] |
Pearce P, Edwards W. A design model for nitrification on structured cross flow plastic media trickling filters[J]. Water and Environment Journal, 2011,25(2):257-265.
|
| [17] |
中国科学院微生物研究所细菌分类组.一般常见细菌鉴定手册[M]. 北京:科学出版社, 2001.
|
| [18] |
窦娜莎,王琳. 16SrDNA克隆文库法分析Biostyr曝气生物滤池处理城市污水的细菌多样性研究[J]. 环境科学学报, 2011,31(10):2117-2124.
|
| [19] |
Li J Z, Shi S. A Short Review of Wastewater Biological Treatment at Low C/N ratio[J]. Advanced Materials Research, 2014,955(6):1490-1494.
|
|
|
|
