Enhanced simultaneous organics and nutrients removal in tidal flow constructed wetland using activated alumina as substrate treating domestic wastewater

Bioresource Technology
Xu TanWenchao Yin

Abstract

A tidal flow constructed wetland (TFCW), a commonly applied system to clean wastewater, contains a substrate to assist pollutants removal, while the choice of substrate affects the formation of bacterial biofilms. Herein, activated alumina-TFCW (A-TFCW) with hydraulic load of 1.35 m3/(m2·d) parallel with shale ceramisite (S-TFCW) was investigated for treating domestic wastewater, aiming to enhance simultaneous long-term removal of organics, nitrogen and phosphorus. A-TFCW achieved significantly higher COD, NH4+-N, TN and TP removal efficiency than S-TFCW, with the removal efficiency of 85.9% COD, 85.4% NH4+-N, 72.8% TN and 96.4% TP respectively. Denitrifying bacteria dominated in both formed biofilms, with higher relative abundance of nitrifying bacteria and denitrifying bacteria in A-TFCW. These results demonstrated that AA substrate was more suitable to be applied in enhancing the removal performance in TFCW for the treatment of domestic wastewater.

Citations

May 31, 2020·Environmental Science and Pollution Research International·Shuting ShenXiwu Lu
Jul 16, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Jingqing GaoJinliang Zhang
Aug 4, 2020·Water Environment Research : a Research Publication of the Water Environment Federation·Edith Martinez-GuerraVeera Gnaneswar Gude
Oct 28, 2020·Water Environment Research : a Research Publication of the Water Environment Federation·Jeffrey W Beaudry, Sukalyan Sengupta
Nov 30, 2020·The Science of the Total Environment·Jonar Johannes RothKarina Querne de Carvalho
Feb 18, 2021·Environmental Science and Pollution Research International·Tanveer SaeedTanbir Khan
Jul 14, 2020·Bioresource Technology·Shuangyu TangGuodong Ji
Mar 26, 2021·Journal of Environmental Management·Hanxi WangLianxi Sheng
May 26, 2021·The Science of the Total Environment·Congcong ZhaoQian Wang

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