Sewage

Giant solidified masses of fat, grease, and other waste threaten to clog sewer lines and cause huge spillages in cities worldwide. Researchers at RMIT have developed two novel ways to prevent these blocks of waste from forming.

Using more sludge and less slag in their recipe, researchers were able to create a material that's stronger than even today's enhanced cements and highly resistant to corrosion by acid. It could solve a serious problem facing sewer pipes worldwide.

A decade after it was revealed, London's "super sewer" is now finally complete. The mega-project is expected to revolutionize the handling of waste in the British capital, boosting the capacity of its 150-year-old sewer system significantly.

Researchers have developed a simplified, sustainable method of converting sewage sludge from wastewater treatment into high-value activated carbon that can be used in a wide range of industrial and residential applications.

Concrete sewage pipes lead a hard life, constantly being exposed to corrosive acid produced by bacteria in wastewater. A new additive could allow such concrete to self-heal – and it would do so using water treatment sludge.

It was just this week that we heard about the SPD1, a spider-inspired robot designed to inspect sewer lines. Well, it looks like the bot won't be alone down there, as the recently announced Joey robot is designed to do exactly the same thing.

According to Japanese robotics firm TMSUK, there's currently a shortage of sewer-inspection workers in that country. The company has therefore set out to streamline the workload for existing workers, by making a sewage-pipe-inspecting robotic spider.

A team from Australia's RMIT University says it's figured out a cost-effective way to produce hydrogen using wastewater and sewage. The process not only produces clean H2 gas, it also captures all the carbon in human poop and puts it to valuable use.

Recreational boaters looking to offload waste from sewage tanks can make a pit stop at pump-out stations on the marina, but there are also boats that can take away stored sewage. And the vessel recently delivered to Branford, Connecticut, is somewhat cleaner than most.

A year after it first got under way, the first major work for London's Thames Tideway Tunnel "super sewer" project has been completed. A replacement pier at Blackfriars will provide continued access to river transport during work to reinforce the nearby river wall.

The US Department of Energy's Pacific Northwest National Laboratory (PNNL) has found a way to potentially change the 34 billion gal (128 billion liters) of raw sewage that Americans create every day into 30 million barrels of biocrude oil per year.

London has embarked on what is described as a "one in one-hundred-and-fifty-year project." The maneuvering of a crane into place at Blackfriars on the River Thames marks the start of major work on the Thames Tideway Tunnel, a "super sewer" that will drastically reduce sewage overflow into the river.