IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Ecological ditch system for nutrient removal of rural domestic sewage in the hilly area of the central Sichuan Basin, China
Wang, Tao; Zhu, Bo; Zhou, Minghua
Corresponding AuthorZhu, Bo(bzhu@imde.ac.cn)
2019-03-01
Source PublicationJOURNAL OF HYDROLOGY
ISSN0022-1694
Volume570Pages:839-849
AbstractDomestic sewage is a key source of surface water pollution in rural areas of developing countries, especially in China, where a large amount of highly concentrated nutrients is directly discharged into the receiving waters. Therefore, in this study, a set of ecological ditch systems was designed to remove nutrients from rural domestic sewage in the hilly area of the central Sichuan Basin, China. The results show that the total nitrogen (TN) removal efficiencies range from 14.87% to 84.24%, with an average of 47.97%, and the total phosphorus (TP) removal efficiencies range from 13.93% to 86.22% with an average of 49.79%. The highest daily TN and TP removal rates are 13.06 and 1.30 g M(-2)d(-1), respectively, and the average removal rates are 3.19 g m(-2)d(-1) for TN and 0.28 g m(-2)d(-1) for TP. Our results indicate that the ecological ditch system to treat rural domestic sewage with high nutrient concentrations can be used in the study area or areas with similar topography. Furthermore, we found that the nutrient removal efficiencies exhibit considerable seasonal variations and are sensitive to the hydraulic flow rates. The nutrient removal capacity of the ecological ditch system is therefore somewhat limited. Based on our findings, the use of winter-hardy wetland plants and increase of the size of the filter unit are recommended to make the ecological ditch system more efficient and maintain high nutrient removal rates year-round. Furthermore, we suggest that regular mowing of plants and the removal of accumulated sediment are necessary to manage the ecological ditch system.
KeywordEcological ditch Domestic sewage Wastewater treatment Nitrogen Phosphorus
DOI10.1016/j.jhydrol.2019.01.034
Indexed BySCI
WOS KeywordWASTE-WATER TREATMENT ; CONSTRUCTED WETLANDS ; AGRICULTURAL DRAINAGE ; VEGETATED DITCHES ; NITROGEN REMOVAL ; NITRATE REMOVAL ; RISK-ASSESSMENT ; POLLUTION ; PERFORMANCE ; MACROPHYTES
Language英语
Funding ProjectKey Lab of Mountain Surface Process and Ecological Regulation ; National key research plan of China[2017YFD0800105] ; Hundred Talents Program of the Chinese Academy of Sciences
WOS Research AreaEngineering ; Geology ; Water Resources
WOS SubjectEngineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS IDWOS:000460709400067
Funding OrganizationKey Lab of Mountain Surface Process and Ecological Regulation ; National key research plan of China ; Hundred Talents Program of the Chinese Academy of Sciences
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/25255
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorZhu, Bo
AffiliationChinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Wang, Tao,Zhu, Bo,Zhou, Minghua. Ecological ditch system for nutrient removal of rural domestic sewage in the hilly area of the central Sichuan Basin, China[J]. JOURNAL OF HYDROLOGY,2019,570:839-849.
APA Wang, Tao,Zhu, Bo,&Zhou, Minghua.(2019).Ecological ditch system for nutrient removal of rural domestic sewage in the hilly area of the central Sichuan Basin, China.JOURNAL OF HYDROLOGY,570,839-849.
MLA Wang, Tao,et al."Ecological ditch system for nutrient removal of rural domestic sewage in the hilly area of the central Sichuan Basin, China".JOURNAL OF HYDROLOGY 570(2019):839-849.
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