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Assessment of treatment capabilities of Varthur Lake, Bangalore, India

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  • Durga Madhab Mahapatra
  • H.N. Chanakya
  • T.V. Ramachandra

Abstract

Manmade waterbodies have traditionally been used for domestic and irrigation purposes. Unplanned urbanisation and ad-hoc approaches have led to these waterbodies receiving untreated sewage. This enriches and eutrophies the waterbody. A physico-chemical and biological analysis of sewage-fed Varthur Lake in Bangalore was carried out and its treatment capabilities in terms of BOD removal, nutrient assimilation and self-remediation were assessed. Anaerobic conditions (0 mg/L) prevail at the inlet which improves towards the outlets due to algal aeration. This removed >50% BOD in the monsoon season but was inhibited by floating macrophytes in all other seasons. Alkalinity, TDS, conductivity and hardness values were higher when compared to earlier studies. This study shows the lake behaves as an anaerobic∼aerobic lagoon with a residence time of 4.8 d treating the wastewater to a considerable extent. Further research is required to optimise the system performance.

Suggested Citation

  • Durga Madhab Mahapatra & H.N. Chanakya & T.V. Ramachandra, 2011. "Assessment of treatment capabilities of Varthur Lake, Bangalore, India," International Journal of Environmental Technology and Management, Inderscience Enterprises Ltd, vol. 14(1/2/3/4), pages 84-102.
    • Handle: RePEc:ids:ijetma:v:14:y:2011:i:1/2/3/4:p:84-102
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    Cited by:

    1. Ramachandra, T.V. & Durga Madhab, Mahapatra & Shilpi, Samantray & Joshi, N.V., 2013. "Algal biofuel from urban wastewater in India: Scope and challenges," Renewable and Sustainable Energy Reviews, Elsevier, vol. 21(C), pages 767-777.
    2. Sharma, Yogesh Chandra & Singh, Veena, 2017. "Microalgal biodiesel: A possible solution for India’s energy security," Renewable and Sustainable Energy Reviews, Elsevier, vol. 67(C), pages 72-88.
    3. Shah, Arpit & Garg, Amit, 2017. "Urban commons service generation, delivery, and management: A conceptual framework," Ecological Economics, Elsevier, vol. 135(C), pages 280-287.

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