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Water Treatment

Purification, desalination... it’s all about water

Friday, 08 January 2010 00:34 administrator
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The Hindu 08.01.2010

Purification, desalination... it’s all about water

Staff Reporter

Expo showcases various products related to water and sewage treatment

— Photo: R.Shivaji Rao

EA Water’s vice-president H.Subramanian, industrialist A.C.Muthiah (centre) and EA Water’s managing director Sunil Ghorawat at the inauguration of “Everything About Water Expo 2010” on Thursday.

CHENNAI: From water purifiers for households to large desalination units, the 7th international ‘Everything About Water Expo 2010’ that got under way on Thursday at Chennai Trade Centre here showcases various technologies and products related to water and sewage treatment.

The three-day expo, being organised by EA Water Private Limited with the Associated Chambers of Commerce and Industry of India, has over 150 stalls of leading companies from 25 countries, including Algeria, Morocco and Pakistan. Nearly 50 companies have featured desalination technologies and various components required to assemble a water treatment unit. Industrialist A.C. Muthiah inaugurated the exhibition.

Highlighting the growing awareness about water and waste water management, EA Water’s managing director Sunil Ghorawat said reverse osmosis technology is the most preferred in Chennai where water quality is on the decline. The cost of RO plants has dropped by half due to increased competition and growing demand.

Nearly 60 per cent of the water and waste water products in the country are imported from China. Only 10 per cent of the requirement is being manufactured in India as the production cost is high, Mr. Ghorawat said.

Rajesh S. Nair of Fontus Water Limited said membrane bio-reactor technology is being used, of late, in sewage treatment as the treated sewage is of better quality. Need for less space for the facility and faster treatment process are some of the other advantages in the technology.

However, it is nearly 30 per cent expensive compared to the conventional technology. Conferences and training workshops on water reuse are being organised as part of the exhibition.

The visitors could also get free consultation on water purification and sewage treatment at the ‘Dr.H2O’ stall.

Leading consultants would clarify doubts regarding water disinfection technologies, sewage recycling and industrial effluent treatment.

Nemmeli desalination plant

S.Natarajan, Head (sales) of Va Tech Wabag Limited, who was one of the participants, said the company had got the contract to establish Chennai Metrowater’s 100 million litres a day desalination plant in Nemmeli. It would be launching the work in mid-February.

As membranes would be introduced in the preliminary filtration level, the plant would have quicker treatment process and consume less space.

Last Updated on Friday, 08 January 2010 00:36
 

Expo on water, wastewater management

Wednesday, 30 December 2009 03:59 administrator
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The Hindu 30.12.2009

Expo on water, wastewater management

Special Correspondent

CHENNAI: Over 300 representatives from 25 countries are expected to showcase their products and expertise in water sector at an exhibition and conference to be held in Nandambakkam near here from January 7-9, 2010. While the broad theme of the event is on water and wastewater management, the exposition will also throw light on technological advancements in the fields of water harvesting, water conservation, irrigation and desalination.

Organised by EA Water, the exposition will take place at the Chennai Trade Centre. It is co-organised by the Associated Chambers of Commerce and Industry of India (ASSOCHAM) and supported by the Indian Environment Association (IEA), Indian Water Works Association , Indian Desalination Association and the Indian Environmental Association.

A training workshop on water reuse and recycle would also form part of the event, H. Subramaniam, vice-president of EA Water, told reporters here on Tuesday.

Stating that there were enormous business opportunities in the country’s water industry, he said the water sector component accounted for 40 per cent to 50 per cent of projects under the Jawaharlal Nehru National Urban Renewal Mission. Bigger players such as the Tatas and Hindustan Lever were looking at huge opportunities in the sector.

Last Updated on Wednesday, 30 December 2009 04:01
 

Experts call for recycling of grey water in the

Tuesday, 22 December 2009 11:07 administrator
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The New Indian Express 22.12.2009

Experts call for recycling of grey water in the

Gokul Chandrasekar


CHENNAI: If Chennai fails to take up water conservation including grey water harvesting on a large scale, the city will face a severe water crisis by 2020, warn experts.

The water table, which was just 30 feet below the ground in 1960, is now at 1,350 feet, and one of the reasons is that most water conservation techniques followed in cities such as Mumbai and Bangalore are not followed in Chennai.

Professor Navaneetha Gopalakrishnan of Anna University’s Environmental Studies Department said, “Grey water harvesting has yielded results in both Bangalore and Mumbai.” Every day Chennai generates millions of litres of sewage, which can be recycled at a minimal cost of Rs 10 per 1,000 litres. This, according to experts, is cheaper than desalination in producing clean, usable water, which costs around Rs 50-60 per litre. The water recycled from grey water is about 95 per cent pure and can be used for all household purposes except drinking.

The Mumbai Municipal Corporation has proposed to make it mandatory for all housing societies to recycle grey water. Recommending a similar step by the Chennai Corporation, Dr Ramachandran of the Climate Centre, Anna University said, “Unless there is political and policy backing to implement a green technology such as this one, it will not serve its purpose completely.”

Last Updated on Tuesday, 22 December 2009 11:11
 
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