Bangalore Water Supply and Sewerage Board shelves Drinking water from sewage project

BANGALORE: Bangalore Water Supply and Sewerage Board (BWSSB) has shelved its ambitious project to supply recycled sewage water for drinking purposes fearing public wrath, said a BWWSB official who did not want to be named.

The officials said: “People were against drinking purified sewage water.

Now, we will be supplying the tertiary treated sewage water for gardening and washing purposes to some areas through separate pipelines.” The first phase of the project was supposed to be completed by 2011 and was expected to provide BWSSB an additional 135 MLD (Million litres daily) of water to be supplied to the city.

In January 2008, the BWSSB had planned to start a project to recycle sewage and supply it for potable purpose. The project was expected to cost Rs 472 crore, and was to be jointly funded by the Jawaharlal Nehru National Urban Renewal Mission and the state government, which was taking a loan from the Japan Bank of International Cooperation.

According to the plan the sewage was supposed to be pumped to Tavarekere in Magadi Road after tertiary treatment at Vrishabavathi Valley. The water would then pass through an purification plant in Tavarekere and flow to Thippagondanahalli Tank. It would then become tha part of the city’s water supply.

According to BWSSB’s calculations, Bangalore would need around 2,200 MLD of water by 2025. At present, BWSSB supplies around 970 MLD of water through all its available resources.

BWSSB will get an additional supply of 500 MLD after the completion of Cauvery IV Phase II Stage in 2012. The BWSSB was looking to generate more than 700 MLD of water through the sewage purification project. Now, it has the onerous task of finding water elsewhere, as the water allocated to the city by the Cauvery tribunal would be completely used with the completion the Cauvery IV Phase II Stage.

From THE Express Buzz

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Bangalore-BWSSB plans mega water treatment plant

BANGALORE: Bangalore Water Supply and Sewerage Board (BWSSB) will construct the country’s second biggest water treatment plant at Torekadanahalli (TK Halli) to supply drinking water to the city under Cauvery IV stage II phase project.

BWSSB will be supplying 500 million litres per day (MLD) under Cauvery IV stage II phase and the water treatment plant will have a capacity to purify 500 MLD of water. Delhi Jal Board has constructed three water treatment plants of 550 million litres capacity.

Raw water from Cauvery river will be pumped from Shiva Anicut to TK Halli, which is at a distance of 18.5 km, through open channel and steel pipeline. The water will be purified and treated at TK Halli and will be pumped to the city in three phases, after treatment.

Nine working pumps and five standby pumps of high pumping capacity will be installed at TK Halli, Harohalli and Tataguni to pump water to the city, which is 98 km away from TK Halli. These pumps will be regulated with the supervisory control and data acquisition system.

The water will be pumped to the city in a steel pipeline of diameter 2700 millimetre and the water will be directed to six different ground level reservoirs (GLR) that are to be constructed at Jambu Savari Dinne, Uttarahalli, Parappana Agrahara, Gandhi Krishi Vignan Kendra, OMBR and Hudi.

These GLRs will have a collective storing capacity of 147 million litres of water and will help in regulating and diverting water to different parts of the city through 40 GLRs that are already existing and nine GLRs that will be constructed with aid from Bangalore Development Authority at different parts of the city.

All the aforesaid works will be undertaken under Cauvery IV stage II phase and will be jointly funded by Japan government and state government.

One of the BWSSB officials said, “Some of these works are yet to commence. If everything goes according to the plan, they should be completed by the end of 2012.”
madhusudhan@epmltd.com

From Express Buzz

Water: Harsh summer for north, west Bangalore

For the water storage level, that increases annually during the months of August, September and October, has dropped drastically. The storage capacity of the reservoir, located in the downstream of Hesarghatta lake, is 74 feet but the level was hovering at a mere 28 feet, nine inches feet on Saturday. “The month of August is over and half of September too has gone. There has been no appreciable increase in the storage levels. It is during these two months and October that the reservoir’s levels shoot up,” said  a top official.

The areas in Rajaji Nagar, Kamala Nagar, West of Chord Road, Vijayanagar, Nagarbhavi and parts of Yelahanka will bear the brunt of the decreased levels in the reservoir, during the coming summer, he added.

The reasons are not far to seek; absence of rains in the catchment areas of Nelamangala, Doddaballapur, Sivaganga and Nandi Hills. “The last three days have shown a minor improvement but that is just not enough,” the official said.

While the increase in water level is usually 500 million cubic feet (mcft) during each of these three months in the preceding years, the level has gone up by a mere 20 mcft for the month of August, this year.

“The inflow into the reservoir is very poor this time. The annual increase that ranges between 1,500 mcft to 2,000 mcft appears to be a distant prospect this time around. Even last year, it had increased well above 1,500 mcft by the end of October,” he informed.

The year 2008 was a good year for the reservoir as the water had touched a four-year high of 40-feet in October that time, thanks to copious rains. The reservoir, located 35 kms from the City towards Magadi, supplies 70 million litres of water to Bangalore on a daily basis. This is a crucial supplement to the 810 million litres of Cauvery water supplied daily by the Thoraikkadanahalli reservoir. TG Halli mainly caters to the needs of northern and western parts of Bangalore.

Inaugurated in the year 1933, the reservoir is located at the confluence of the Arkavathi and Kumudvathi rivers. It used to be the only source of water supply to the City during that era.

From Deccan Herald

India – Bangalore – BWSSB plans mega water treatment plant

BANGALORE: Bangalore Water Supply and Sewerage Board (BWSSB) will construct the country’s second biggest water treatment plant at Torekadanahalli (TK Halli) to supply drinking water to the city under Cauvery IV stage II phase project.

BWSSB will be supplying 500 million litres per day (MLD) under Cauvery IV stage II phase and the water treatment plant will have a capacity to purify 500 MLD of water. Delhi Jal Board has constructed three water treatment plants of 550 million litres capacity.

Raw water from Cauvery river will be pumped from Shiva Anicut to TK Halli, which is at a distance of 18.5 km, through open channel and steel pipeline. The water will be purified and treated at TK Halli and will be pumped to the city in three phases, after treatment.

Nine working pumps and five standby pumps of high pumping capacity will be installed at TK Halli, Harohalli and Tataguni to pump water to the city, which is 98 km away from TK Halli. These pumps will be regulated with the supervisory control and data acquisition system.

The water will be pumped to the city in a steel pipeline of diameter 2700 millimetre and the water will be directed to six different ground level reservoirs (GLR) that are to be constructed at Jambu Savari Dinne, Uttarahalli, Parappana Agrahara, Gandhi Krishi Vignan Kendra, OMBR and Hudi.

These GLRs will have a collective storing capacity of 147 million litres of water and will help in regulating and diverting water to different parts of the city through 40 GLRs that are already existing and nine GLRs that will be constructed with aid from Bangalore Development Authority at different parts of the city.

All the aforesaid works will be undertaken under Cauvery IV stage II phase and will be jointly funded by Japan government and state government.

One of the BWSSB officials said, “Some of these works are yet to commence. If everything goes according to the plan, they should be completed by the end of 2012.”

By N R Madhusudhan – madhusudhan@epmltd.com