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Impact of sewage discharges on coastal water quality of Mumbai, India: present and future scenarios

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Abstract

The simulation study assesses the impact of sewage discharges on the present and predicted water quality of the Mumbai coast using MIKE 21. Water quality parameters in terms of dissolved oxygen (DO), biochemical oxygen demand (BOD) and faecal coliform (FC) are checked against specified standards. The simulation is validated for the present coastal hydrodynamics and observed water quality parameters. The validated model is further used for predicting scenarios in terms of upgradation in a pumping station and improvement in wastewater collection, treatment level and disposal systems. The water quality of the existing coastal environment does not conform to the stipulated standards but improves considerably in the prediction scenarios. However, despite a marked improvement in FC, it is not as per desired standards as no treatment for bacteria removal is considered. The simulation study emphasizes the need for exploring options like the reuse or recycle of treated effluent, as an effort for water conservation.

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Acknowledgments

The authors are thankful to the Municipal Corporation of Greater Mumbai (MCGM) for financial support to carry out this study.

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Authors and Affiliations

  1. Environmental Systems Design and Modelling Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur, 440020, Maharashtra, India

    Ritesh Vijay, Trupti Mardikar & Rakesh Kumar

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  1. Ritesh Vijay
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  2. Trupti Mardikar
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  3. Rakesh Kumar
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Correspondence to Ritesh Vijay.

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Vijay, R., Mardikar, T. & Kumar, R. Impact of sewage discharges on coastal water quality of Mumbai, India: present and future scenarios. Environ Monit Assess 188, 420 (2016). https://doi.org/10.1007/s10661-016-5418-9

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