Fatbergs clogging sewers could provide homes with green energy

Fatbergs clogging the sewers in the cities of Britain could soon provide homes with green energy. A technique for decomposing solid masses of fats, oil fat (FOG) has been developed. Treatment (center and right) decomposed 80 percent solids in FOG samples (left)

Fatbergs clogging sewers beneath cities around the world could soon provide homes with green energy, according to new research.

Scientists have developed a technique to break down solid masses of frozen fat, wet wipes, diapers, oil and condoms.

The resulting sludge can be treated to release methane gas, a renewable energy source that can be used to drive a turbine to generate energy.

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Fatbergs clogging the sewers in the cities of Britain could soon provide homes with green energy. A technique for decomposing solid masses of fats, oil fat (FOG) has been developed. Treatment (center and right) decomposed 80 percent solids in FOG samples (left)

Fatbergs clogging the sewers in the cities of Britain could soon provide homes with green energy. A technique for decomposing solid masses of fats, oil fat (FOG) has been developed. Treatment (center and right) decomposed 80 percent solids in FOG samples (left)

The new method could offer a use for annoying fatbergs: reddened garbage that can grow to huge sizes in the sewers beneath bustling cities.

Last year, a The 130-ton, 250-meter-long fatberg blocked a Victorian tunnel in Whitechapel, east of London. It took three weeks to clear up.

The mixture of fats, oils and fats, collectively known as FOG, could heat up to break them down, researchers at the University of British Columbia found.

They heated lumps of FOG at temperatures between 90 and 110 degrees centigrade (194F-230F).

Add hydrogen peroxide, a chemical that initiates the decomposition of organic matter.

The researchers said the treatment drastically reduced the volume of solids in the FOG by up to 80 percent.

The technique could offer a use for annoying fatbergs: reddened debris that can grow to enormous sizes. Last year, a 130-ton, 250-meter-long fatberg blocked a Victorian tunnel in Whitechapel, east of London (pictured). It took three weeks to clear

The technique could offer a use for annoying fatbergs: reddened debris that can grow to enormous sizes. Last year, a 130-ton, 250-meter-long fatberg blocked a Victorian tunnel in Whitechapel, east of London (pictured). It took three weeks to clear

The technique could offer a use for annoying fatbergs: reddened debris that can grow to enormous sizes. Last year, a 130-ton, 250-meter-long fatberg blocked a Victorian tunnel in Whitechapel, east of London (pictured). It took three weeks to clear

The fat, oil and grease mixture, collectively known as FOG, which makes up the fatbergs, could heat up to break them down, according to researchers at the University of British Columbia.

The fat, oil and grease mixture, collectively known as FOG, which makes up the fatbergs, could heat up to break them down, according to researchers at the University of British Columbia.

The fat, oil and grease mixture, collectively known as FOG, which makes up the fatbergs, could heat up to break them down, according to researchers at the University of British Columbia.

It also released fatty acids from the mixture that bacteria can break down in the next stage of treatment.

Engineer Dr. Asha Srinivasan said: "FOG is an excellent source of organic material that microorganisms can feed to produce methane gas, which is a valuable source of renewable energy.

"But if it's too rich in organic compounds, the bacteria can not handle it and the process breaks down.

WHAT ARE FATBERGS?

Fatbergs are blockages made up of reddened grease, oil, grease and other reddened waste, such as wet wipes and illegal drugs.

They are formed on huge concrete slabs and can be found under almost every city in the United Kingdom, growing larger with each color.

They also include food wrappers and human waste, block tunnels and increase the risk of household wastewater flooding.

Fat for cooking is the largest contributor to the fat of Great Britain, constituting almost 90% of the sample

Fat for cooking is the largest contributor to the fat of Great Britain, constituting almost 90% of the sample

The largest ever discovered in the United Kingdom was a monster 750 meters (2,460 feet) found in the South Bank of London in 2017 (pictured)

They can grow meters high and hundreds of meters long, with water suppliers last year declaring a fatberg emergency epidemic in 23 cities of the United Kingdom, costing tens of millions of pounds to eliminate.

The largest ever discovered in the United Kingdom was a monster 750 meters (2,460 feet) found at London's South Bank in 2017.

The Fatbergs take weeks to take off and train when people put things that they should not in toilets and toilets.

"By preheating it to the right temperature, we make sure that the FOG is ready for the final treatment and can produce the maximum amount of methane."

Your team's method could allow farmers to load more FOGs into their biogas digesters, large tanks that treat farm waste, including cow dung.

Dr. Srinivasan said: "Farmers often restrict FOG to less than 30 percent of general food.

"But now the FOG can be divided into simpler forms, so you can use much more than that, up to 75 percent of the global diet.

& # 39; You would recycle more oil waste and produce more methane at the same time.

HOW MUCH IT COSTS & # 39; FATBERGS & # 39; TO THE PUBLIC?

Fatbergs, frozen fat that is piled together with other waste products to form concrete blocks, are becoming increasingly problematic in sewers across the UK, especially in London.

The largest fatberg ever registered in the capital, weighing 15 tons, was found in Kingston in August 2013.

And in 2015, workers spent four days pulling a fatberg the size of a jumbo jet from a sewer in Shepherd's Bush.

In neighboring Bedfordshire, a line of fatbergs recently blocked a 100-meter-long pipe. Anglian Water had to be sent in a specialized robot (pictured) with a high-pressure jet from Holland to approach the blocked culverts and bring down the fatbergs to gradually disperse.

In neighboring Bedfordshire, a line of fatbergs recently blocked a 100-meter-long pipe. Anglian Water had to be sent in a specialized robot (pictured) with a high-pressure jet from Holland to approach the blocked culverts and bring down the fatbergs to gradually disperse.

In Bedfordshire, a line of fatbergs clogged a 100-meter-long pipeline in 2016. Anglian Water had to be shipped in a specialized robot (pictured) with a highly pressured jet from Holland to fly the fatbergs and gradually disperse them.

Among the most common causes of drainage obstructions are makeup and diaper wipes, grease and grease, chewing gum, dental floss, plasters and construction debris.

The staff at Thames Water usually uses powerful suction equipment to break the locks and then high-powered water jets to clean the tunnels.

The company spends approximately £ 1 million per month cleaning up fat and blockages, dealing with 55,000 of them each year. It is a similar story for other water companies throughout the United Kingdom.

The principal investigator, Professor Víctor Lo, said that, ultimately, the technology can be used in municipal FOG management programs.

He added: "The beginning would be the same. Pre-treat the FOG so that it does not clog the pipes and add it to the sewage sludge to produce methane from the mixture.

"As far as we know, this type of pretreatment for FOG has not been studied before, although there are simple chemical methods to break down the FOG.

"We hope to do more research to find the optimal proportion of FOG for the manure of dairy products so that they can be pretreated together."

The study was published in the journal Water, Air, and Soil Pollution.

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