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Effect of settling time and pH on the treatment of domestic grey water using custard apple seeds as natural coagulant

Author

Listed:
  • Rathore Kavish

    (Pandit Deendayal Petroleum University, Gandhinagar, India)

  • Nautiyal Roopika

    (Pandit Deendayal Petroleum University, Gandhinagar, India)

  • Raj Ishant

    (Pandit Deendayal Petroleum University, Gandhinagar, India)

  • Uliana Shivangi

    (Pandit Deendayal Petroleum University, Gandhinagar, India)

  • Shah Brij

    (Pandit Deendayal Petroleum University, Gandhinagar, India)

  • T. S. Anantha Singh

    (Pandit Deendayal Petroleum University, Gandhinagar, India)

Abstract

Water scarcity along with climate change, population growth and development pose difficulties for the present water supply systems. Today, 2.1 billion people globally are living without a safe water supply near their home. Hence, domestic wastewater treatment along with its reuse is becoming a significant topic for research. Grey water is all wastewater generated in households, public or commercial properties without fecal contamination. Treating and reusing grey water decreases the quantity of fresh water needed and also lessens the volume of wastewater flowing into the sewer system. The grey water sample was taken from a residential society in Ahmedabad and the natural coagulant used was freely and locally available Custard Apple (Annona Reticulata) seeds. The initial characteristics of the grey water were accessed based on the parameters pH, TS, TDS, Turbidity and COD and measured as 7.79, 780 mg/L, 590 mg/L, 276 NTU and 625 mg/L respectively. Turbidity and COD were analysed for different concentrations of Coagulant Dosage and also by varying the Settling Time and pH. The settling time was varied from 10 to 30 minutes considering the elimination of micro-flocs and pH was varied from 4 to 9. The optimum results were obtained at settling time of 30 minutes, pH 9 and 10 mg/L coagulant dosage giving 85% turbidity removal and 82% COD removal. It was observed that adding organic coagulant beyond the optimum level contributes to COD. The study focuses on investigating the effect of natural coagulant on treatment of domestic grey water along with factors affecting the removal efficiency

Suggested Citation

  • Rathore Kavish & Nautiyal Roopika & Raj Ishant & Uliana Shivangi & Shah Brij & T. S. Anantha Singh, 2018. "Effect of settling time and pH on the treatment of domestic grey water using custard apple seeds as natural coagulant," Journal of Applied and Physical Sciences, Prof. Vakhrushev Alexander, vol. 4(1), pages 26-33.
    • Handle: RePEc:apb:japsss:2018:p:26-33
    DOI: 10.20474/japs-4.1.4
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    References listed on IDEAS

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    1. Akarat Panrare & Tusanee Tondee & Prapa Sohsalam, 2016. "Effect of Plant Density in Constructed Wetland on Domestic Wastewater Treating Efficiency," International Journal of Applied and Physical Sciences, Dr K.Vivehananthan, vol. 2(1), pages 7-12.
    2. Peiravi Roya & Rahmatiyar Hadi & Alidadi Hossein & Mohammad Vahedian, 2015. "Survey of Wastewater Stabilization Pond Potential in Meeting Environmental Standards," International Journal of Applied and Physical Sciences, Dr K.Vivehananthan, vol. 1(1), pages 19-21.
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