Zeolite trickling filter (ZTF) was developed to treat domestic wastewater. Biofilm colonization and the effects of hydraulic loading rate (HLR) on the treatment of domestic wastewater by the ZTF were investigated. In biofilm colonization stage, the influent was set as the "continuous manner", and after 26d, COD and ammonia removal efficiencies reached 85% and 68%, even more, respectively, moreover, relative deviation of the two adjacent test results of COD and ammonia were less than 10% in this period, indicated that the biofilm colonization was success and the ZTF reached a stable operation state. The ZTF exhibited a strong adaptability on the variation of hydraulic loading rate (HLR), and average removal efficiencies of COD, ammonia, TN, TP reached 90.8%, 87.1%, 67.2%, and 90.1%, respectively, when the HLR was adjusted to 300L/(m2·d). In the treatment process by the ZTF, COD, ammonia, and TN could be efficiently removed, and the biological decomposition and biotransformation processes of microorganisms were the most important pathway for pollutants removal, while the adsorption of phosphorous onto the zeolite substrates could explained as the main removal mechanism, in which metal irons oxidized into ferric hydroxides was the key factor for adsorption of phosphorus. Moreover, the bacterial diversity in the ZTF was very rich, which could be proved by the characteristics of biomass and microorganism population distribution
郭俊元, 周明杰, 甘鹏飞, 谭显东, 郭子豪, 付琳, 黄婉怡, 柏雪. 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[J]. 中国环境科学, 2016, 36(12): 3601-3609.
GUO Jun-yuan, ZHOU Ming-jie, GAN Peng-fei, TAN Xian-dong, GUO Zi-hao, FU Lin, HUANG Wan-yi, BAI Xue. Performance of zeolite trickling filter in treatment of domestic wastewater and characteristics of the biofilm. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(12): 3601-3609.
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[1]
Chen M,Chen J,Du P.An inventory analysis of rural pollution loads in China[J].Wat.Sci.Technol.2006,54(11):65-74.
[2]
Massoud M A,Tarhini A,Nasr J A.Decentralized approaches to wastewater treatment and management:Applicability in developing countries[J].J.Environmental Management,2009,90(1):652-659.
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,2014,64:415-423.
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].J.Hazardous Materials.2007,143(1):291-295.
[14]
Rao R K,Srinivasan T,Venkateswarlu C.Mathematical and kinetic modeling of biofilm reactor based on ant colony optimization[J].Process Biochemistry,2010,45(6):961-972.
[15]
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.
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.
[18]
Krasnits E,Beliavsky M,Tarre S,et al.PHA based denitrification:municipal wastewater vs.acetate[J].Bioresource Technology.2013,132:28-37.
[19]
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.
[20]
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.
[21]
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.
[22]
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.
