Performance evaluation of hybrid constructed wetlands for the treatment of municipal wastewater in developing countries

作     者：Sajjad Haydar Mehwish Anis Misbah Afaq Sajjad Haydar;Mehwish Anis;Misbah Afaq

作者机构：Institute of Environmental Engineering&Research(IEER)University of Engineering&Technology(UET)LahorePakistan 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2020年第28卷第6期

页      面：1717-1724页

核心收录：

学科分类：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）] 0817[工学-化学工程与技术] 08[工学] 0703[理学-化学] 

主　　题：Constructed wetlands Municipal wastewater Hybrid Pistia Typha Batch mode Continuous mode 

摘      要：In developing countries,high cost of conventional wastewater treatment is a major hindrance in its *** wetlands(CWs)offer low-cost and effective solution to this *** current study aimed to evaluate an innovative maneuver of CWs *** flow constructed wetlands(HCWs)for municipal wastewater(MWW).The HCWs included two lab scale CWs;one horizontal and one vertical,in *** plant species were *** were operated in both,batch and continuous *** mode was used to(1)optimize detention time and(2)find pollutants removal *** operation(at batch optimized retention time)was carried out for the evaluation of mass removal rate,r(g·m-2·d-1),volumetric rate constant,Kv(per day)and areal rate constant,Ka(m·d-1).Among two local plants tested,Pistia stratiotes gave better removal efficiency than *** detention time in HCWs was found to be 8 days(4+4 each).The optimum COD,BOD,TSS,TKN and P removal observed for Pistia stratiotes planted HCWs was 80%,84%,82%,71%and88%*** standards for COD,BOD and TSS were met at optimum *** values of Kaand Kv demonstrated that more removal occurred in vertical flow as compared to horizontal flow CW.