The 4350water Blog highlights some of the issues relating to proposals for potable reuse in Toowoomba and South East Qld. 4350water blog looks at related political issues as well.

Sunday, April 20, 2008

Coal seam gas water - liquid gold ...

Premier Bligh: "If the [coal seam gas] water can be treated effectively and then transported efficiently, I would like to get this as drinking water to regional towns and Toowoomba."

How long has the NO campaign been saying that coal seam gas water is a viable alternative?

The Toowoomba City Council told us that drinking it would poison us. (For some reason a RO plant could clean the sh*t out of sewage water but not clean the salinity out of gas water!)

Now Anna Bligh seems to be accepting it as a water source option for Toowoomba.

Excerpt from Sunday Mail:

Water source is liquid gold

20 April 2008

A water source has been discovered that could supply parched parts of Queensland with billions of litres every year for decades.

The coal-seam gasfields being developed by the Queensland Gas Company in the Surat Basin near Condamine will produce enough water to meet nearly a quarter of Brisbane's annual needs for at least 30 years, the company's experts say.

For Queensland Gas, the water is a "waste product" that has to be removed to stimulate the gas flow.

But to a state hit by prolonged drought and facing increasing threats from climate change, it's liquid gold.

"Sometimes it's important to lift your eyes and look at the bleeding obvious," said Queensland Gas managing director Richard Cottee.

Billions of litres could be used to supply Toowoomba and rural communities west of the city – or piped to Wivenhoe Dam.

With only a tenth the salinity of seawater – "it's just brackish to taste" Mr Cottee said – the coal-seam water could be brought to drinking standard through filtration by reverse osmosis or other methods.

The company has already signed a deal with the former Miles Shire Council to supply the town with all its potable water for free. The council will build an 8km pipeline.

It was only in February that the full scale of the reserves was realised.

Once the gasfields hit full production, in about seven or eight years, a massive 100 to 125 megalitres of water a day will be pumped out – the same amount that will be produced by the $1.1 billion desalination plant being built at Tugun on the Gold Coast.

While Queensland Gas would own the water, Mr Cottee said the focus would be on recovering the costs of getting the water to where it was needed rather than exploiting it as a revenue stream.

"We are a gas producer," he said. "The water will be our waste product. It's ridiculous isn't it – in the driest continent on earth, water will be waste. It's too precious to waste."

Mr Cottee has spoken with Premier Anna Bligh about the potential.

One idea is to construct a water pipeline alongside the Roma to Brisbane gas pipeline.

This could supply Toowoomba and a string of drought-hit towns including Miles, Chinchilla, Dalby and Oakey.


The company estimates the cost of a 180km pipeline from the gasfields to the Garden City would be about $300 million.

But it would eliminate the need for the Government to go ahead with a planned $200 million pipe, which would pump scarce water the other way from Wivenhoe up the Great Dividing Range to Toowoomba.

Premier Bligh said: "If the water can be treated effectively and then transported efficiently, I would like to get this as drinking water to regional towns and Toowoomba.

"But this could also be an excellent source of reliable water for farm irrigation, cattle feedlots and industrial uses such as power stations."


Ray Brown, mayor of the Dalby Regional Council, said the water supply "would be a huge benefit for our region" boosting agriculture, mining and other development.

"I'm very excited. Everyone out here is on the edge of their seats at the moment.

"We've been in drought for so long and people have been down, but now everyone has a spring in their step."

Another option – particularly once a second field for Queensland Gas becomes operational, doubling the amount of water produced – could be to extend the pipeline to feed Wivenhoe Dam to help meet the needs of the southeast. The lower-quality discharge residue could go to Tarong Power Station.

The water, like the gas, is molecularly held within the coal and has to be extracted to break a pressure seal that releases the gas.

"This is important because it means the water could otherwise not be accessed," said a Queensland Gas spokeswoman.

"It is not in aquifers or groundwater supplies, but structurally bound inside the coals. So removing it will not lower the underground water table."

Up to 30 megalitres of water a day is already being extracted from the coal and stored in massive dams at the gasfields. The company expects that to rise to between 100 and 125 megalitres daily within five years.


See - Sunday Mail - Water source is liquid gold.

5 Comments:

Anonymous Anonymous said...

Could the state government finally start talking sense and implement a water solution using coal seam gas water or is that just too much to hope for?!?

3:00 PM, April 20, 2008

 
Anonymous Anonymous said...

Kevin will do anything to scuttle any plans to use this water. Just watch.

3:59 PM, April 20, 2008

 
Anonymous Anonymous said...

The Chronicle

Award for plant

17 April 2008

Origin's newly-commissioned $16 million reverse osmosis plant at Spring Gully in Queensland has been awarded the APPEA Environmental Award for its contribution to environmentally sustainable industry practice.

The plant, located in Origin's coal seam gas fields north or Roma, is Australia's first fully integrated coal seam gas (CSG) water treatment facility and produces more than seven million litres of high-quality fresh water a day - the equivalent of 20,000 household's daily use.

Origin's general manager exploration and production Paul Zealand said the plant takes saline water extracted from coal seams as part of the gas production process, and removes impurities to create high quality water.

"Rather than dispose of brackish CSG produced water in hectares of evaporation ponds as is usually done, the plant produces fresh water, reducing the need for salt ponds, greatly improving environmental water flows," he said.

4:24 PM, April 20, 2008

 
Anonymous Anonymous said...

ABC News

Waste water no solution to SE Qld drought: Council

20 April 2008

The Toowoomba Regional Council says waste water from coal seam gasfields will not be a quick-fix to south-west Queensland's water shortage.

The council has been involved in talks with the Queensland Gas Company, which is saying it will have billions of litres of waste water from underground, that could supply the region for decades.

But Mayor Peter Taylor says there is much work to be done before the waste water from the Surat Basin gets to Toowoomba.

"It would be great if we can use it, but the costs however have to be borne," he said.

"There are some significant costs in reducing the salt from the water and of course the disposal of that salt, and transporting that water over long distances to get it to any town, are expensive.

"Certainly if we're able to work with the mining companies and the Government to be able to use that water, it would be a great thing."

4:40 PM, April 20, 2008

 
Anonymous Anonymous said...

"But Mayor Peter Taylor says there is much work to be done before the waste water from the Surat Basin gets to Toowoomba."

Well get on with it.

4:50 PM, April 20, 2008

 

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