Low efficiency of sewage treatment plants due to unskilled operations in India
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- 作者：Pritha Chatterjee ; M. M. Ghangrekar ; Surampalli Rao
- 关键词：Aerobic process ; Anaerobic process ; Centralized sewage treatment plants ; Decentralized sewage treatment plants ; Performance evaluation ; Wastewater management
- 刊名：Environmental Chemistry Letters
- 出版年：2016
- 出版时间：September 2016
- 年：2016
- 卷：14
- 期：3
- 页码：407-416
- 全文大小：412 KB
- 刊物类别：Earth and Environmental Science
- 刊物主题：Earth sciences
Geochemistry
Analytical Chemistry
Biochemistry
Monitoring, Environmental Analysis and Environmental Ecotoxicology
Soil Science and Conservation
Waste Water Technology, Water Pollution Control, Water Management and Aquatic Pollution - 出版者：Springer Berlin / Heidelberg
- ISSN：1610-3661
- 卷排序：14
文摘
Centralized sewage treatment plants may not be a sustainable solution for a developing country such as India. Therefore, we conducted for the first time an integrated assessment of the different technologies currently used for sewage treatment in the state of West Bengal, India. Five decentralized sewage treatment plants and one centralized sewage treatment plant located in different parts of Kolkata were evaluated. We compared influent and effluent water quality, energy consumed, capital and operating costs, and treated wastewater reuse potential. F test was used to validate results on the effect of working days and holidays and seasons on treated water quality. Wastewater management strategy was assessed by performance indicators. Our results show that treatment efficiency was lowest in anaerobic plants not because of faulty technology but due to unskilled operation. Therefore, performance improvement of plants is expected if factors such as monitoring, training of staff, regular and scrupulous desludging, reuse aspects, and rational water tariff are implemented earnestly.