Water Treatment

Sewage treatment plant at Muttathara gets operational

Friday, 28 June 2013 12:39 administrator

The Times of India 28.06.2013

Sewage treatment plant at Muttathara gets operational

THIRUVANANTHAPURAM: The much awaited Muttathara sewage treatment plant (STP) began functioning on Wednesday. After a week-long trial run using water, sewage was pumped into the intake chamber of the STP for the first time by around 1pm. The plant, spread over 36 acres, treats the sewage water using the 'activate sludge process'.

According to officials, though the plant has begun operations in full swing, the first three months will be considered as trial period. Though the original capacity of the plant is 107 million litres per day, only 42mld sewage reach the STP from the core areas of the city. Efforts will be made to bring sewage from other areas within two years, officials said. The government has already spent Rs 89 crore on the project that is estimated to cost Rs 333 crore.

A final assessment of the efficiency of the plant can be done only after the formation of sludge in the sewage that has been collected, an official said.

"The bacteria that would decompose the waste in the sewage water will take time to grow. It will take at least 30 days for the sludge to from," he said.

Officials from the Kerala Sustainable Urban Development Project, Kerala Water Authority and Jawaharlal Nehru National Urban Renewal Mission reviewed the project. The construction of the STP that began in 2009 has been undertaken by the Noida-based UEM Group. The firm will be responsible for the maintenance of the plant for the next five years.

BWSSB plans to recharge TG Halli reservoir with treated water

Thursday, 27 June 2013 09:44 administrator

Deccan Herald 27.06.2013

BWSSB plans to recharge TG Halli reservoir with treated water

Though the Bangalore Water Supply and Sewerage Board (BWSSB) has commissioned its last and final drawal of 500 million litres of water (mld) from the Cauvery basin, through Cauvery IV stage II phase project, the Board is still far from reaching 12 lakh consumers in 110 villages in the Bruhat Bangalore Mahanagara Palike jurisdiction.

The BWSSB is looking for new sources of water to fulfil the growing demand in the City. It is estimated that the City would face a shortage of 610 million litres of water (mld) by 2025.

Therefore, the BWSSB is now planning to re-pursue its 2005 project that proposed to meet the growing demand by recharging the Thippagondanahalli (TG Halli) reservoir and the Arkavathy surface water source, by using treated sewage from the Koramangala and Challaghatta valley (K&C) waste water treatment plant.

The project proposed to divert the treated water to Nandi Hills which would flow into various lakes located downstream and ultimately to the TG Halli reservoir.

The project plans to instal four centrifugal pumps from K&C Valley till Nandi Hills and construct a ground-level reservoir (GLR) at the foot of the hills. The proposed plan is to pump 200 mld of treated sewage using the centrifugal pumps, each having 50 mld capacity to an elevation of 980 metres into the proposed GLR.
Booster pumps

The treated water would be lifted using booster pumps to the identified hill surface facing the TG Halli catchment. This will be distributed/sprinkled using the distribution system and holding tanks, as a thin film over the surface, and get it naturally aerated which would ultimately drain into TG Halli reservoir.

Though the project aims to recharge the reservoir for drinking water supply, it will indirectly encourage farmers to use it for irrigation also. Of the 200 mld treated water, it is assumed that about 135 mld will reach the reservoir which could be further supplied to the City.

In case of excess water during monsoon, it may overflow into the downstream command area for irrigation. The cost estimated in 2005 was Rs 415 crore. However, a BWSSB official said the project can be executed at a cost of Rs 500 crore with an annual operation and maintenance cost of Rs 80 crore.

In 2000, a study conducted by the Indian Space Research Organisation and Indian Resource Information and Management Technologies Ltd revealed that unplanned development in the catchment areas was one of the main reasons for the deteriorating water quality and reduced inflow into the TG Halli reservoir.

Altered drainage pattern

Increasing urbanisation and industrialisation in catchment areas have altered the drainage pattern and this, in turn, has affected the inflow into the reservoirs.
In 2003, the government declared TG Halli reservoir as sensitive zone under the Environment (Protection) Act, 1986.

Despite several studies and recommendations made to conserve the reservoir and its catchment area, no concrete plans were executed.

The reservoir was the maiden source of water supply to the City and was supplying 30 mld till November 2012, when the BWSSB decided to discontinue supply after water levels dropped below the threshold levels. However, with the recent rains, the levels have increased to 2,513 feet as against its total capacity of 2,574 feet.

Kozhikode corporation to set up waste plant at Njeliyanparamba

Monday, 17 June 2013 12:14 administrator

The Times of India 17.06.2013

Kozhikode corporation to set up waste plant at Njeliyanparamba

KOZHIKODE: Kozhikode corporation has decided to float tenders to set up an advanced treatment plant at Njeliyanparamba trenching ground. The delay from the part of the state government in finalizing an agency to set up an advanced waste plant at the trenching ground even after a year has forced the civic body to find its own way to resolve the waste problem.

The growing protests from a section of people against extending the period of treatment plant run by New Delhi based Infrastructure Leasing and Financial Services (IL&FS) at Njeliyanparamba has also made the civic body to find an amicable solution at the earliest.

"Despite extending all the support from our part, we are yet to receive any information about the proposed advanced treatment plant announced by the state government," said mayor A K Premajam. "We have decided to float tender for an advanced plant considering the prevailing situation. The tender will be floated after holding discussions with the officials concerned," said the mayor.

Though the state government had announced setting up of an advanced treatment plant at the trenching ground under PPP model, nothing has been finalized so far.

The trenching ground is situated on an 18-acre plot and the contract of the company that was entrusted to run it for a period of five years ended on June 15, 2013.

Health standing committee chairperson Janamma Kunjunni said that the civic body didn't have any other option, but inking a new agreement with the IL&FS till the setting up of a plant at the trenching ground.

"The contract will be for a period of two years or till the new plant is ready. The company will pay Rs 40,000 per month, which will be revised after one year. The new contract will be valid till an advanced plant comes up at the trenching ground," said Janamma Kunjunni.

The delay on the part of the state government in finalizing an agency to set up a plant at the trenching ground forced the civic body to find its own way.

Civic body to hand over Rs 3.34 cr for city sewage treatment plant

Friday, 14 June 2013 10:06 administrator

Deccan Chronicle 14.06.2013

Civic body to hand over Rs 3.34 cr for city sewage treatment plant

Kochi: The corporation council has decided to give Rs 3.34 cr for acquiring land for the Elamkulam sewage treatment plant. The civic body had to modify some of its other plan project proposals for fiscal 2013–2014, to find out the amount needed for land acquisition. The civic body would have had to shelve the project had the funds for land acquisition not been given.

The Union Government had made it clear that the proposed Jawaharlal Nehru National Urban Renewal Mission (JNNURM) funded sewage treatment plant couldn’t be initiated if land was not handed over in time.

At a recent corporation council meeting, corporation secretary Ajith Patil had requested the council to allocate Rs 3.34 cr for acquiring land. “The Union Government has made it clear that additional funds could be provided only if land acquisition was complete. If the funds are not be handed over in 10 days, the project will have to be resubmitted”, the secretary said.

The second phase of the Elamkulam sewage plant meant for the central city area, has been a non starter for want of funds. Though the initial estimate was put at Rs 73 cr, it has gone up to Rs 153 cr now. JNNURM will provide the funds for laying the network of pipelines and other components of the project.

Nashik Municipal Corporation to construct 25 MLD sewage pumping station

Wednesday, 05 June 2013 12:26 administrator

The Times of India 05.06.2013

Nashik Municipal Corporation to construct 25 MLD sewage pumping station

NASHIK: The Nashik Municipal Corporation (NMC) will be converting its unused water pumping station at Old Gangapur Road into a 25 MLD sewage pumping station to divert the sewage in that area to Tapovan Sewage Treatment Plant (STP).

Explaining about the need to construct this sewage pumping station, superintending engineer of the underground sewerage department U B Pawar said, "Through this sewage treatment plant, we will be taking the sewage from the right bank to the left bank and will divert this to the sewage pipeline in Makhmalabad. From this pipeline, the sewage will be taken to the Tapovan STP for treatment. This is the solution for carrying excess sewage in this pipeline to the STP".

The Makhmalabad pipeline is big but often filled to capacity. This necessitated the construction of the sewage pumping station. The other option is to minimise the load on this pipeline through a parallel pipeline, which it is very difficult proposal.

"The pipeline would have to start from Goda Park and go downstream. It would damage the park and the construction works at Godavari river, the temples, etc. So we are diverting the sewage to the left bank. The sewage will be carried from Anandwalli village to Gangapur sewage pumping station that is coming from upstream," he said.

The earlier plan was to construct a new sewage treatment plant. But, the civic body has saved Rs 60 lakh by making use of the jack well at this spot to build the sewage pumping station.

The NMC has invited e-tenders of Rs 3 lakh from competent contractors for the civil and allied work for the sewage treatment plant. The detailed tender notice will be available on the NMC website from June 10.

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