A Comparative Study of Pollutant Removal Stability in Hybrid Wetland Columns

作     者：Tanveer Ferdous Saeed Guangzhi Sun 

作者机构：Department of Civil Engineering Ahsanullah University of Science and Technology Dhaka 1208 Bangladesh Department of Civil Engineering Building 60 Monash University Clayton Victoria 3800 Australia Department of Chemical Engineering James Cook University Townsville Queensland 4811 Australia 

出 版 物：《湿地科学》 (Wetland Science)

年 卷 期：2012年第10卷第2期

页      面：142-148页

核心收录：

学科分类：050302[文学-传播学] 05[文学] 0908[农学-水产] 08[工学] 0710[理学-生物学] 083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 0707[理学-海洋科学] 0818[工学-地质资源与地质工程] 0903[农学-农业资源与环境] 0901[农学-作物学] 0503[文学-新闻传播学] 0713[理学-生态学] 

主　　题：摘要 编辑部 编辑工作 读者 

摘      要：This study investigated the effects of two alternative substrates(wood mulch and zeolite) on the performance of three laboratory-scale hybrid wetland systems that had identical system components and *** system consisted of a vertical flow(VF) wetland column,followed by a horizontal flow(HF) column and a vertical flow *** substrates employed were wood mulch,gravel and zeolite,and Phragmites australis were planted in each *** systems received synthetic wastewater,with pollutant loadings in the range of 8.5-38.0 g/(m2·d) total nitrogen(TN) and 4.0-46.4 g/(m2·d) biological oxygen demand(BOD5).Wood mulch and zeolite substrates showed higher efficiencies in terms of removing nitrogenous compounds and biodegradable *** supply of organic carbon from the organic mulch substrates enhanced denitrification,while adsorption of influent ammoniacal nitrogen(NH4-N) in zeolite played a major role in the removal of nitrogenous species in the wetland ***,the average percentage removals of TN and BOD5 reached 66% and 96% respectively,indicating stable performances by the hybrid wetland systems under the experimental loading *** models were developed,based on the combination of Monod kinetics and continuously-stirred tank reactor(CSTR) flow patterns to describe the degradation of nitrogenous *** by the models closely matched the experimental data,indicating the validity and potential application of Monod kinetics in the modelling and design of treatment wetlands.