Ecological restoration for the Liangtan river by Rotating biological contactors combined with hybrid constructed wetlands
文献类型： 外文期刊
作者： Hu, Ning 1 ; He, Jinfeng 1 ; Shi, Wenjie 1 ; He, Jinke 1 ; Lv, Bohan 1 ; Liang, Yinkun 1 ; Huang, Lei 1 ;
作者机构： 1.Southwest Univ, Coll Resources & Environm, Key Lab Three Gorges Reservoir Reg Eco Environm, Minist Educ, Chongqing 400715, Peoples R China
2.Chongqing Key Lab Agr Resources & Environm, Chongqing 400716, Peoples R China
3.Southwest Univ, Coll Resources & Environm, 216 Tiansheng St, Chongqing 400715, Peoples R China
关键词： Rotating biological contactors; Hybrid constructed wetlands; Polluted river; Pollutants removal; Microbial community
期刊名称：JOURNAL OF CLEANER PRODUCTION （ 影响因子：9.7； 五年影响因子：10.2 ）
ISSN： 0959-6526
年卷期： 2022 年 375 卷
页码：
收录情况： SCI
摘要： Rotating biological contactors (RBCs) were first used as pretreatment units for hybrid constructed wetlands (HCWs) in practical engineering to treat polluted river water. The experimental results during 2019-2021, except the period of global COVID-19 pandemic (January to April, November and December in 2020), indicated the average removal efficiencies of ammonia nitrogen (NH4+-N), total phosphorous (TP), and chemical oxygen de-mand (COD) were 95.06%, 41.03%, and 45.46%, which met the Chinese Environmental Quality Standards I, III, IV (CEQS I, III, IV), respectively. RBCs and HCWs had synergistic and complementary effects on purification efficiency, especially on nitrogen removal. The remarkable nitrification efficiency of RBCs was not influenced by temperature and influent loads. The relative abundances of microorganisms at HCWs in cold seasons were comparable to that in warm seasons, which promoted the recovery of decontamination efficiency after over -wintering. These results support RBCs combined with HCWs (R-HCWs) is an effective polluted river purification process, providing a new perspective on water ecological restoration.
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