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    Sewage Pollution Control: Chapter - 6

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    KHUSHBOO
    The document discusses the status of sewage treatment in India. It finds that while 34,000 million liters of sewage are generated per day, treatment capacity exists for only 12,000 million liters. This results in a large gap between sewage generation and treatment. It also evaluates the performance of specific sewage treatment plants in various states, finding that plants in Uttar Pradesh, Haryana and Delhi under the Yamuna Action Plan regularly meet treatment standards.

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    Sewage Pollution Control: Chapter - 6

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    KHUSHBOO
    33 views2 pages
    The document discusses the status of sewage treatment in India. It finds that while 34,000 million liters of sewage are generated per day, treatment capacity exists for only 12,000 million liters. This results in a large gap between sewage generation and treatment. It also evaluates the performance of specific sewage treatment plants in various states, finding that plants in Uttar Pradesh, Haryana and Delhi under the Yamuna Action Plan regularly meet treatment standards.

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    The document discusses the status of sewage treatment in India. It finds that while 34,000 million liters of sewage are generated per day, treatment capacity exists for only 12,000 million liters. This results in a large gap between sewage generation and treatment. It also evaluates the performance of specific sewage treatment plants in various states, finding that plants in Uttar Pradesh, Haryana and Delhi under the Yamuna Action Plan regularly meet treatment standards.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    33 views2 pages

    Sewage Pollution Control: Chapter - 6

    Uploaded by

    KHUSHBOO
    The document discusses the status of sewage treatment in India. It finds that while 34,000 million liters of sewage are generated per day, treatment capacity exists for only 12,000 million liters. This results in a large gap between sewage generation and treatment. It also evaluates the performance of specific sewage treatment plants in various states, finding that plants in Uttar Pradesh, Haryana and Delhi under the Yamuna Action Plan regularly meet treatment standards.

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    © All Rights Reserved
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    of 2

    CHAPTER - 6

    Sewage Pollution Control


    6.1. Status of water supply, sewage (collection, treatment & disposal) in Class-I
    Cities and Class-II Towns
    CPCB has initiated a survey on status of water supply, sewage collection/treatment /
    disposal and municipal solid waste (MSW) collection / processing / disposal in Class-I Cities
    and Class-II Towns. The report is under final stages of preparation. Information on sewage
    generation Vs treatment is given below:

    . Treatment Capacity

    .. Capacity Gap
    Sewage Generation

    21,767 MLD

    11,989 MLD

    33,757 MLD
    Figure: 6.1.1. Status of Sewage Management in Class-I Cities & Class-II Towns

    6.2. Status of Sewage Treatment Plants (STPs) in India


    Discharge of untreated sewage in water courses both surface is a serious water polluting
    problem area in India. Out of about 34000 million liter per day of sewage generated
    treatment capacity exists for only about 12000 million liter per day. Thus, there is a large
    gap between generation and treatment of wastewater in India
    6.3. Performance of Sewage Treatment Plants (STPs) in U.P., Haryana and Delhi
    under Yamuna Action Plan
    CPCB regularly monitors four sewage treatment plants constructed under Yamuna Action
    Plan (3 STPs in Haryana State & 1 STP in Delhi) for their performance evaluation under
    National River Conservation Directorate project. The installed capacity of these plants varies
    from 10 MLD to 45 MLD. Out of these, 3 STPs are based on Up-flow Anaerobic Sludge
    Blanket (UASB) treatment system and one is based on physico-chemical treatment followed
    by aerobic treatment system.
    6.4. Performance of STPs in Gujarat and Maharashtra
    In Gujarat, there are 12 sewage treatment plants located in Vadodara (3), Surat (6),
    Ahmedabad (2), Rajkot (1). In Maharashtra, there are 23 STPs located in various cities.
    CPCB’s Zonal Office – Vadodara proposes to monitor 9 STPs in Gujarat and 2 STPs in
    Maharashtra in 2008.

    30
    6.5. Performance of Sewage Treatment Plants (STPs) in Rajasthan and M.P.
    The following STPs were monitored by CPBC’s Zonal Office Bhopal:
    o STP Jalmahal Road, Jaipur (October 20-21, 2008)
    o STP Delawas, Jaipur (October 20-21, 2008)

    6.6. STATUS OF WASTE WATER OUTFALLS

    6.6.1. Survey & monitoring major drains in National Capital Territory (NCT) Delhi
    Twenty one major wastewater drains of NCT- Delhi are being monitored regularly by CPCB.
    On a monthly basis. Out of twenty one drains, seventeen drains join river Yamuna, three
    join the Agra Canal and one drain joins the Gurgaon canal. On the basis of annual average
    the total discharge and pollution load (BOD load) of these drains during the year 2008 was
    about 50 m3/sec. and 270 Tonnes per day (TPD) respectively. Najafgarh drain is the
    biggest drain followed by Shahdara drain , These two drains together contribute about
    58% and 75% of total BOD load and total discharge of all the monitored drains.

    Other Drains
    Sarita Vihar Drain 21%
    4%

    Najafgarh Drain
    Power House Drain 36%
    6%

    Drain Near Sarita


    Vihar Bridge Shahdara Drain
    Sarita 22%
    11%

    Figure: 6.6.1. BOD Load Contribution of various wastewater Drains at Delhi (year 2008)

    Sarita Vihar Drain Other Drains


    1% 11%
    Power House Drain
    1%
    Drain Near Sarita
    Vihar Bridge
    12%

    Najafgarh Drain
    Shahdara Drain 53%
    22%

    Figure: 6.6.2. Discharge Contribution of various at Delhi (year 2008)

    6.6.2. Status of Wastewater outfalls at Varanasi, Allahabad and Mirzapur


    Characterization of major waste water outfalls was undertaken in 2008 for six drains at
    Allahabad, five at Varanasi and two at Mirzapur for eleven parameters. BOD ranged from 25
    to 120 mg/l.
    ****

    31

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