New insight for purifying polluted river water using the combination of large-scale rotating biological contactors and integrated constructed wetlands in the cold season
文献类型: 外文期刊
作者: Huang, Lei 1 ; Bao, Jun'an 1 ; Zhao, Fang 1 ; Liang, Yinkun 1 ; Chen, Yucheng 1 ;
作者机构: 1.Southwest Univ, Key Lab Three Gorges Reservoir Reg Ecoenvironm, Minist Educ, Coll Resources & Environm, Chongqing 400715, Peoples R China
2.Chongqing Key Lab Agr Resources & Environm, Chongqing 400716, Peoples R China
关键词: Rotating biological contactor; Constructed wetland; Polluted river water; Purification effect; Microbial community; Cold season
期刊名称:JOURNAL OF ENVIRONMENTAL MANAGEMENT ( 影响因子:8.91; 五年影响因子:8.549 )
ISSN: 0301-4797
年卷期: 2022 年 324 卷
页码:
收录情况: SCI
摘要: Ecological treatment technologies, applied to deal with polluted river water in the low temperature season, remain limited. In this study, a new insight was put forward for purifying polluted river water using a combination system (CS) of large-scale rotating biological contactors (RBCs) and integrated constructed wetlands in autumn and winter. The treatment performance, average removal contribution (RC), nitrification and denitrification rates, microbial community structure, and ecosystem service value were considered to estimate the combination system. Results revealed that the average removal efficiencies of ammonium (NH4+-N), total nitrogen (TN), total phosphorus (TP), and chemical oxygen demand (COD) reached 93.9%, 20.8%, 36.5%, and 37.1%, respectively. The combination system showed excellent removal efficiency of NH4+-N regardless of the effect of low temperature. The maximum values of nitrification and denitrification rates were 59.57 g N/(m(3).cl) and 0.78 g N/(m(2).d), respectively. Considerable differences in bacterial community diversity, richness and relative abundance of functional microbes were observed in the main treatment units, resulting in different average RC to pollutants. The unit capital cost of CS purifying polluted river water was 260 USD/m(3) and the operation and maintenance cost was 0.144 million USD/yr. Meanwhile, the ecosystem service value of the CS was 0.334 million USD in autumn and winter. CS not only possessed excellent pollutant purifying efficiencies, but also achieved high ecological service value in the cold season.
- 相关文献
作者其他论文 更多>>
-
Simultaneous change of microworld and biofilm formation in constructed wetlands filled with biochar
作者:Zhong, Hui;Jiang, Chunli;He, Xi;He, Jinke;Zhao, Yaqi;Chen, Yucheng;Huang, Lei;Zhong, Hui;Jiang, Chunli;He, Xi;He, Jinke;Zhao, Yaqi;Chen, Yucheng;Huang, Lei;Huang, Lei;Huang, Lei
关键词:Constructed wetland; Biochar; Biofilm; Extracellular polymeric substance; Extracellular protein
-
Pathways and biological mechanisms of N2O emission reduction by adding biochar in the constructed wetland based on 15N stable isotope tracing
作者:Huang, Lei;Xiong, Haifeng;Jiang, Chunli;He, Jinke;Lyu, Wanlin;Chen, Yucheng;Huang, Lei;Xiong, Haifeng;Jiang, Chunli;He, Jinke;Lyu, Wanlin;Chen, Yucheng;Huang, Lei;Chen, Yucheng;Huang, Lei
关键词:Constructed wetland; Biochar; Nitrous oxide; Emission pathway; Functional microbes; Enzyme activity
-
Strategies to alleviate clogging in constructed wetlands: What can be learned from the microbial fuel cell coupled membrane bioreactor?
作者:Huang, Lei;He, Jinke;Jiang, Chunli;Weng, Sijia;Zhao, Fang;Zhong, Hui;Chen, Yucheng;Huang, Lei;He, Jinke;Jiang, Chunli;Weng, Sijia;Zhao, Fang;Zhong, Hui;Chen, Yucheng;Huang, Lei;Chen, Yucheng;Chen, Yucheng
关键词:Constructed wetland; Bioelectrochemistry; Microbial fuel cell; Biological clogging; Extracellular polymeric substances
-
Structure, mechanism, and toxicity in antibiotics metal complexation: Recent advances and perspectives
作者:Wang, Qinghua;He, Xi;Xiong, Haifeng;Chen, Yucheng;Huang, Lei
关键词:Antibiotic-metal complexes; Affecting factors; Microorganisms; Resistance gene; Toxicity
-
Effect of different flocculants on the characteristics of hydrochar and hydroliquid derived from the hydrothermal treated active sludge. A comparative study
作者:Qi, Gaoxiang;Liu, Xuecheng;Chen, Yucheng;Qi, Gaoxiang;Liu, Xuecheng;Chen, Yucheng;Qi, Gaoxiang;Liu, Xuecheng;Liu, Biyan;Wang, Xiaobo;Shen, Yu;Alam, Md Asraful
关键词:Flocculants; Sewage sludge; Hydrothermal carbonization; Hydrochar; Elements transformation
-
How to select substrate for alleviating clogging in the subsurface flow constructed wetland?
作者:Zhong, Hui;Hu, Ning;Wang, Qinghua;Chen, Yucheng;Huang, Lei;Zhong, Hui;Hu, Ning;Wang, Qinghua;Chen, Yucheng;Huang, Lei
关键词:Constructed wetland; Substrate; Physical clogging; Chemical clogging; Biological clogging
-
Sustainability assessment of topsoil ecology in Chongqing, China based on the application of livestock and poultry manure
作者:Zhao, Wanyi;Deng, Jibao;Chi, Sunlin;Wang, Weizhong;Xu, Longshui;Chen, Yucheng;Xu, Weihong;Huang, Qizhong;Zhang, Yimo;Yu, Ximao;Xu, Jian
关键词:Manure; Ecological risk; Biomarker microbes; Microbial flora function; Resistance genes