The nation’s sewer system is a topic most people would prefer to avoid, but its aging infrastructure is wearing out, and broken pipes leaking raw sewage into streets and living rooms are forcing the issue.
To better predict which pipes need to be fixed, scientists report in the ACS journal Environmental Science & Technology that certain conditions in the pipes can clue utilities in to which ones need repair — before it’s too late. Mark T. Hernandez and colleagues note that the maintenance of U.S. wastewater collection systems costs an estimated $4.5 billion every year, much of which goes toward fixing or replacing 8,000 miles of sewers. In the future, these annual costs could top $12 billion.
Part of the problem is corrosion caused by sewer gases that feed acid-generating microbes, which grown in biofilms on the inside top surface of the pipes. Although microbe communities have long been recognized as a factor in the corrosion of concrete pipes, they have not been well studied. To fill in the gaps, Hernandez’s team decided to figure out what kinds of bacteria and other conditions were most closely associated with corrosion problems. From 10 different sewer systems in major cities around the country, the scientists measured bacterial diversity, gas concentrations in the air above the wastewater and other factors. In the most worn pipes, they found markedly little variety in the kinds of bacteria present, as well as elevated levels of both hydrogen sulfide and carbon dioxide gases.
The researchers concluded that wastewater utilities could economically monitor combinations of these gases in sewage pipes to figure out which sites might be at higher risk for corrosion and take the necessary steps to prevent major damage.
The Latest on: Sewage pipe repair
via Google News
The Latest on: Sewage pipe repair
- Scott Podhaisky Hired as Director of Quality Control & Product Developmenton May 13, 2020 at 6:20 am
Industry leading trenchless infrastructure solutions provider, the Vortex Companies, has hired Scott Podhaisky as Director of QC & Product Development. Mr. Podhaisky's primary role will be quality ...
- Councilmember optimistic about deal to replace aging, cracked Muddy Creek sewer pipeon May 12, 2020 at 12:34 pm
The Muddy Creek project, something the Metropolitan Sewer District has called a “critical need,” is still stalled as Cincinnati and Hamilton County work to come to an agreement.
- Waterways cleared after Bader Field sewer leak fixedon May 8, 2020 at 6:30 pm
Area waterways can reopen to recreational activities after a sewer leak was repaired at Bader Field, the Atlantic County Utilities Authority said Friday.
- Sewer collapse will see busy road close for three weekson May 7, 2020 at 6:37 am
Due to damage to a sewer pipe in the ground on Wellington Road, Dereham, we will be closing the road from Monday, May 11 for us to safely excavate the area and complete repairs. “During the current ...
- Grim 40kg fatberg dragged out of Maidenhead sewer as blockages rise during pandemicon May 4, 2020 at 3:23 am
A grim 40kg fatberg has been pulled out of a Maidenhead. Engineers from Thames Water made the grim discovery of wet wipes and other 'unflushables’ as heavy as a r ...
- Wellington's sewer repair 'incredibly technically challenging'on May 3, 2020 at 11:21 am
The long-awaited repairs to broken sewer pipes in Wellington are being described as "incredibly technically challenging work" that has never been done before in Australasia. Trucks have been ...
- DEP: Non-flushable Items Cause Problems in Sewer Systemson May 2, 2020 at 10:04 pm
The department said that sewage treatment facilities have been dealing with an increase in non-flushable materials clogging filters and equipment since the beginning of the stay-at-home orders in ...
- Sewer backup and COVID-19 policy puts St. John's family in sticky situationon May 1, 2020 at 3:35 am
ST. JOHN'S, N.L. — Lockdown restrictions due to the COVID-19 pandemic are hard enough for anyone, but for one St. John’s family there has been the added stink of dealing with a malfunctioning sewer ...
- UTILITY ALERT: Emergency sewer repairon April 29, 2020 at 8:27 pm
Seattle Public Utilities sent us a community notice late today about repair work that might already be under way, as it was scheduled to start as soon as this past Monday, but in case it hasn't: The n ...
- 'Flushable' wipes cause problems for some Aiken sewer pipeson April 29, 2020 at 3:24 pm
Residential homes around the city have experienced sewer backup and other piping issues due to flushing substitute toilet paper materials down pipes. The City's There's something lurking in Aiken's ...
via Bing News