期刊
WATER SCIENCE AND TECHNOLOGY
卷 76, 期 6, 页码 1474-1489出版社
IWA PUBLISHING
DOI: 10.2166/wst.2017.329
关键词
anodic oxidation; developing countries; hybrid treatment wetland; UV disinfection; water reuse
资金
- EU's seventh Framework Programme and Department of Science & Technology (GoI) for research, technological development and demonstration [308502]
- Spanish Ministry of Economy and Competitiveness [FJCI-2014-22245]
SWINGS was a cooperation project between the European Union and India, aiming at implementing state of the art low-cost technologies for the treatment and reuse of domestic wastewater in rural areas of India. The largest wastewater treatment plant consists of a high-rate anaerobic system, followed by vertical and horizontal subsurface flow constructed wetlands with a treatment area of around 1,900 m(2) and a final step consisting of solar-driven anodic oxidation (AO) and ultraviolet (UV) disinfection units allowing direct reuse of the treated water. The implementation and operation of two pilot plants in north (Aligarh Muslim University, AMU) and central India (Indira Gandhi National Tribal University, IGNTU) are shown in this study. The overall performance of AMU pilot plant during the first 7 months of operation showed organic matter removal efficiencies of 87% total suspended solids, 95% 5-day biological oxygen demand (BOD5) and 90% chemical oxygen demand, while Kjeldahl nitrogen removal reached 89%. The UV disinfection unit produces water for irrigation and toilet flushing with pathogenic indicator bacteria well below WHO guidelines. On the other hand, the AO disinfection unit implemented at IGNTU and operated for almost a year has been shown to produce an effluent of sufficient quality to be reused by the local population for agriculture and irrigation.
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