Metrowater officials said materials had been sought for the work to commence. The new plant too will employ the reverse osmosis process. But it will have additional components in the pre-treatment process such as dissolved air flotation and ultra filtration, to keep out sea algae and other particles in seawater from hindering the production process.
According to NITI (of Government of India) Report (June 2018), India is now entering in to the phase of “acute water scarcity” and if no adequate measures are taken, then the water demand would exceed water supply by the year 2030.
Also, the ground water resources in many cities including Delhi, Chennai, Bengaluru would get exhausted. Water stress is rapidly turning in to water crisis. Water availability on the earth remains the same as it was 5000 years ago when mankind population was just 5 million as against present population of 7700 million.
However, “there is enough water for everyone’s need but not enough for anyone’s greed”, as pointed out by Gandhiji who was also not in favour of “putting too much burden on the resources (including water) provided to us by nature”.
The plan includes establishing desalination plants at the three ports to solve the drinking water problem besides producing power at a rate of Rs 2.5 per unit, he said. He was speaking at the 34th annual convocation of Vellore Institute of Technology (VIT) at Vellore on Saturday.
After playing hide and seek for the last few days, the clouds over Chennai and adjoining areas opened up late on Wednesday night, dumping 10.4cm of rain, making it the wettest day of the year. The city last recorded 10cm rain in a 24-hour period on August 25, 2011.
For hydrogeologists, the record means that the core city with an area of 174sqkm has received about 17,400 million litres of water which would serve the city’s water supply needs for 21 days, assuming every drop of rain is saved.
The State government has sanctioned Rs 6,079 crore for establishing a 400-MLD reverse osmosis desalination plant at Perur on the East Coast Road, according to the GO issued by the Municipal Administration Department last week.
The funds were sanctioned to give effect to the recent announcement made by Chief Minister Edappadi K Palaniswami under Rule 110 in the Assembly. The plant, being set up to meet the increasing water demands in Chennai city, is funded by the Japan International Cooperation Agency.
The JICA will give Rs 4,267.70 crore in two tranches – i.e., Rs 1,744.40 crore as Transche-I and the balance as Tranche-II. The operation and maintenance cost for 20 years is estimated at Rs 20,174.14 crore and the land lease cost at Rs 82 crore for 30 years; that is, Rs 1,000 crore per annum, on an average.
Krishna’s water supply to Chennai remains as elusive as ever, as it will take 10-15 days for the city to start receiving its share, said officials from the Water Resource Department (WRD).Though the two main reservoirs across Krishna river in Andhra Pradesh, Srisailam and Somasila, have crossed the mark of transferrable water levels, the third reservoir, Kandaleru is still not full.
Replying to a query raised by a member in the legislative assembly on Wednesday, Narayanasamy said the government will seek financial assistance from a French agency to execute projects including desalination plants to meet the growing drinking water needs of the residents.
Niti working out proposal to set up desalination plants along coastline to tide over water crisis – India
The Niti Aayog is working on a proposal to set up a string of floating desalination plants in marine waters along the country’s over 7,500-km coastline, with a view to tide over the water crisis being faced in major urban centres of India.
Recently, several parts of the country, especially Chennai, faced severe water crisis, owing to poor storage in various reservoirs following deficit rainfall. “The Niti Aayog is working on linking desalination of sea waters with the Sagarmala project,” a top government official told PTI on the condition of anonymity.
Sagarmala aims to modernise ports in the country, so that port-led development can be augmented and coastlines can be developed to contribute growth. “Recently, Chennai faced acute water crisis. Why can’t we put some desalination plants in India’s vast coastline and its marine waters and supply it to population centres through a network of pipelines,” the official said.
CHENNAI: The Tamil Nadu government will ensure Chennai city has a permanent water supply capacity of 870 million litres a day (MLD) in the next five years by constructing two more desalination plants of 150 MLD and 400 MLD at Nemmeli and Perur and two 45 MLD tertiary treatment reverse osmosis plants, municipal administration minister S P Velumani announced on Friday.
Addressing the Times of India water conclave aimed at making Chennai water positive, the minister said 260 MLD of waste water would be recycled and diverted to industries to replace the potable water supplied now. Besides new sources such as the Thalakanacheri quarry, Nallambakkam quarry and Pulipakkam quarry with a potential of 60 MLD had been identified. The feasibility study for extraction of water from these sources was on.