Chennai

Chennai: Metrowater pins hopes on Veeranam, borewells.

With Chennai’s four water reservoirs running dry, Veeranam lake, 240km away, could be the oasis this summer.

The city’s water managers are pinning hopes on the lake, water from quarries in Sikkarayapuram, desalination plants in Nemmeli and Minjur, and giant borewells to tide over the crisis.

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Chennai to get 500 million cubic feet of water from Mettur – Chennai – India

The State government has decided to provide the city with an extra supply of around 500 mcft of Cauvery water, a portion of which was released from the Mettur dam on Sunday night, and is expected to reach Veeranam tank in Cuddalore in 10-12 days.

With just less than 700 mcft of water left in all four reservoirs of the city, supply of Cauvery water comes at a crucial time as the city is slipping into a severe drought situation.

This extra supply of water will comfortably last till July while quarries, mines, agricultural fields and two desalination plants will act as additional water sources, said officials.

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LTTD-based desalination plant to come up at Thoothukudi? – India

With thermal power plants being the largest industrial users of water and exceedingly contributing to water-stress, Chennai-based National Institute of Ocean Technology (NIOT) has come out with a novel concept of using coolant water discharge from power plants to produce fresh water.

Thoothukudi Thermal Power Station will be the first in the country to have an in-house 2 MLD (million litres per day) desalination plant based on Low Temperature Thermal Desalination (LTTD) technology.

This assumes significance as the Thoothukudi power plant is constantly accused of depleting the Tamirabarani water by drawing fresh water from the Srivaikuntam dam.

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Recycling water Chennai’s only hope – Chennai

CHENNAI: Chennai’s water woes are legendary. That 2019 too marks another year of crisis is sadly little cause for surprise.

The Northeast Monsoon failed in 2018. There is only enough water in the city’s reservoirs to meet drinking water needs for the next five months.

With erratic rainfall patterns becoming the new normal and Chennai’s groundwater having been exploited to dangerous depths, is there a long-term solution to the almost perennial crisis?

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World’s first self-powered desalination plant by NIOT coming up in Lakshadweep – Chennai – India

Chennai-based National Institute of Ocean Technology (NIOT) is setting up the world’s first self-powered desalination plant using the technology of ocean thermal energy conversion (OTEC) in Kavaratti Island in Lakshadweep.

Union Science and Technology Minister Harsh Vardhan laid the foundation stone for the project on Monday. 

The OTEC is a method to generate power from the difference in temperatures between the surface and the deep sea. As we go deeper and deeper into the sea, the temperature becomes colder.

In tropical countries such as India, the temperature gradient is more or less constant through the year, thus ensuring constant power generation potential.

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Madras High Court puts on hold commissioning of desalination plant in Chennai; postpones hearing till 1 October – Chennai – India

The Madras High Court has restrained Chennai Metropolitan Water Supply and Sewerage Board from issuing work order to successful bidder of the contract for construction of third desalination plant at Nemmeli till further orders.

Justice V Bharathidasan gave the interim order on Tuesday on the petition by Suez International, a French company seeking to declare it as the only technically qualified bidder in the tender floated by the Chennai Metropolitan Water Supply and Sewerage Board (CMWSSB) for construction of the 150 MLD plant.

The petitioner also sought the court to restrain CMWSSB from opening the price bid till the disposal of the plea.

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Nemmeli desalination plant to cost two thousand crores more.

THE proposed desalination plant at Nemmeli will cost the State Rs 2,100 crore more than the initial estimate of Rs 3,912 crore. A detailed project report (DPR) for the 400-MLD plant has revised the estimate to Rs 6,078 crores.

The first estimate was done in 2013 when a DPR was prepared. But because of GST and an increase in material cost, the estimation has been revised and the tender process is expected to begin soon, said an official at the Chennai Metropolitan Water Supply & Sewerage Board.

 

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HC urged to dismiss case against desalination plant.

The Chennai Metropolitan Water Supply and Sewerage Board (CMWSSB) has urged the Madras High Court to dismiss a writ petition filed against the tender called for establishing a 150 MLD (million litres per day) sea water reverse osmosis desalination plant to be set up at Nemmeli on the East Coast Road here at a cost of ₹1,259.38 crore.

In a counter affidavit filed before Justice T. Raja who was seized of the writ petition filed by a private firm from Ranchi, the Board said, the desalination plant was a prestigious and important project being funded by Kreditanstalt fur Wideraufbau (KfW), a German funding agency, and delay in implementation could lead to cancellation of the funding.

 

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Centre defers clearance for 400 MLD desalination plant in Nemmeli – India

The Environmental Assessment Committee (EAC) of the Ministry of Environment, Forest and Climate Change has deferred clearance for a proposal of the Chennai Metropolitan Water Supply and Sewerage Board(CMWSSB) to set up a 400 MLD desalination plant at Nemmeli. The EAC will review the project only after a team to be set up undertakes a site visit and presents a report. The committee, however, has given CRZ clearance for a 150 MLD plant, while imposing a ‘penalty’ requiring CMWSSB to “not only develop a robust shoreline erosion control and management mechanism of the area but also submit an undertaking that it shall bear the full cost of environmental damage due to erosion that might arise of the proposed 150 MLD desalination plant”. The penalty was imposed after noting that CMWSSB had failed to prevent shoreline erosion while setting up a 100 MLD earlier. According to the minutes of the meeting held on November 28, CMWSSB during the 165th meeting held in January had requested clearance for setting up a desalination plant of 400 MLD capacity at a distance of 600 metres from the site of the proposed 150 MLD plant. – Space for two plants – The EAC said there was “considerable space available” at Perur, the proposed site, to establish both the plants. However, it noted that there was already significant erosion of the shoreline due to the 100 MLD plant commissioned there. A clarification was sought as to why two plants had to be set up instead of a single 600 MLD plant. – CMWSSB informed the EAC that the plants were being funded by different agencies. – “The committee observed that this cannot be reason to justify setting up two separate plants,” according to the minutes. The EAC then said that it would consider only the 150 MLD proposal at present, while dropping the second proposal “for the time being.” – The EAC recommended the 150 MLD proposal for clearance subject to certain conditions, including CMWSSB bearing the full cost of any environmental damage that may arise. (LINK)

Maintenance at Nemmeli desalination Plant will disrupted water supply for two days – India – Chennai

Water supply to parts of south Chennai will be disrupted on Thursday and Friday as the desalination plant in Nemmeli undergoes maintenance work.  Production at the plant, which has the capacity to treat and produce 100 million litre of water per day, will be stopped from 6am on October 12 till 6pm the next day. The areas that are likely to be affected are Adyar, Velachery, Besant Nagar, Sholinganallur, Injambakkam, Neelankarai, Kottivakkam, Perungudi, Palavakkam, Thiruvanmiyur, Mandaiveli and Mylapore….

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