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Home / News / Delhi News / Frothing in Yamuna: Delhi Government prepares nine-point action plan
  • Delhi

    Frothing in Yamuna: Delhi Government prepares nine-point action plan

    Srijita Sen <i>(Sourced from PTI)</i>
    Written by
    Srijita Sen (Sourced from PTI)
    Mail
    Last updated on Jan 07, 2021, 05:46 pm
    Frothing in Yamuna: Delhi Government prepares nine-point action plan
  • The Delhi Government has prepared a nine-point action plan to prevent frothing in the Yamuna due to the discharge of untreated sewage in the river.

    The plan, approved by the Delhi Pollution Control Committee, lays down targets to be achieved by various agencies, including the Delhi Jal Board, Delhi Development Authority, and municipal corporations, to prevent the discharge of untreated wastewater in the river.

  • In this article
    What does the plan say? Untreated sewage entering the Yamuna affects drinking water supply Sewage and septic-tank waste from unauthorized colonies to be collected Drain-owning agencies to impose environmental compensations The DDA has to remove encroachments from the Yamuna floodplains What causes the frothing?
  • Details

    What does the plan say?

  • According to the plan, Haryana and Uttar Pradesh have been asked to upgrade their sewage treatment plants to standards prescribed by the DPCC for treating the wastewater entering the Yamuna through Najafgarh drain and Hindon cut canal.

    The UP Irrigation Department has been tasked with removing water hyacinths, whose decomposition releases surfactants like phosphates leading to frothing in the Okhla barrage, by March 31.

  • Drinking water

    Untreated sewage entering the Yamuna affects drinking water supply

    Untreated sewage entering the Yamuna affects drinking water supply
  • Untreated sewage entering the Yamuna from Haryana and UP has on multiple occasions led to an increase in ammonia levels in the river water, affecting drinking water supply in the national capital, according to the DJB.

    The DJB has to connect all unauthorized colonies and settlements to its sewerage system by December 31 next year.

  • Sewage treatment plants

    Sewage and septic-tank waste from unauthorized colonies to be collected

  • Till then, the utility has to ensure that the sewage and septic tank waste from such colonies is collected and transported to sewage pumping stations and sewage treatment plants by authorized vendors, which is an ongoing exercise.

    The water utility has to upgrade its existing sewage treatment plants to meet the prescribed standards of the DPCC by the end of next year.

  • Penalties

    Drain-owning agencies to impose environmental compensations

    Drain-owning agencies to impose environmental compensations
  • The construction of new STPs at Coronation Pillar and Okhla, which will be able to treat 70 MGD and 124 MGD (million gallons of wastewater per day), has to be completed by June 30, 2021, and December 31, 2022, respectively.

    All drain-owning agencies have to impose environmental compensation of Rs. 50,000 on those who dump solid waste and sewage into the drains.

  • Encroachments

    The DDA has to remove encroachments from the Yamuna floodplains

  • The DDA has to remove all encroachments, including dhobi ghats if any, from the Yamuna floodplains by March 31, according to the action plan.

    "Foam formation in the Yamuna is due to the presence of phosphates and surfactants in the river. Foam is produced when organic matter decomposes and releases fatty acids that act as surfactants or surface-active agents," the plan document read.

  • Reason

    What causes the frothing?

    What causes the frothing?
  • The major sources of phosphates and surfactants are the untreated sewage from unauthorized colonies without a functional sewer system and the wastewater coming into the Yamuna from Haryana (into Najafgarh drain) and UP (into Hindon cut canal), it said.

    The phosphoric compounds get settled in the river bed which get agitated on the release of water from a barrage or reservoir, leading to frothing.

  • Delhi
  • Yamuna river
  •  
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