Navigation Links
Solving the stink from sewers
Date:9/21/2012

The rotten egg gas leaking from sewer pipes and costing billions of dollars worldwide in odour control may soon be far less of a problem thanks to new research discussed at the 2012 International Water Association (IWA) conference this week.

Trials with a magic mix of chemicals, called Cloevis, on sewers in the Gold Coast region in Australia stopped 99 per cent of the rotten egg gas or hydrogen sulphide emitted from these pipes.

Lead researcher, Professor Zhiguo Yuan from the University of Queensland, told IWA delegates that one week after dosing for a few hours, in most cases the gas level increased to less than one fifth of its emissions prior to the treatment, and this has been repeatedly observed over a period of five months.

"We are currently looking to commercialise Cloevis and are doing a further four trials of the mix in the US and Canada," Professor Yuan says. "Our partners over there are very excited by Cloevis' potential".

The gases causing the bad smells in sewers also play a role in corroding sewer pipes, which is another costly problem especially in warm climates.

Professor Yuan's team, involving active participation from key members of Australia's water industry, is also working on corrosion issues and have another study into chemical free methods for managing hydrogen sulphide gas.

"We have done some trials with oxygenation of sewage using an electrochemical method which has reduced hydrogen sulphide enormously," he says. "We probably won't stop all bad smells from sewers forever but we're well on the way to reducing their extent."

Other speakers at the IWA conference spoke about managing bad smells from sewers and wastewater drains once they had escaped. Dr Valentina Lazarova from France reported on trials on the strong smells coming from the Oued El Harrach River in Algiers. Her team used jasmine-smelling micro sprays on the highway crossing the river and gels on pedestrian bridges nearby to mask the smells.

"We used 1000 questionnaires and face-to-face interviews with local people and found out that 70 per cent of the population were satisfied or very satisfied with what we did and 96 per cent wanted the project to continue," she says.

Zdaravka Doquang from France talked about how to determine how bad a sewage-based smell is for people, with regards to both its type and intensity of smell. Her team has developed an 'odour wheel' for sewage smells that: "helps to classify odours and ensure a common language to communicate about the odours."

"People are most sensitive to hydrogen sulphide or rotten egg gas compounds both qualitatively and quantitatively compared to any other compounds," she says.


'/>"/>

Contact: Jenni Metcalfe, Econnect Communication
jenni@econnect.com.au
61-408-551-866
Econnect Communication Pty Ltd.
Source:Eurekalert

Related biology news :

1. Are methane hydrates dissolving?
2. Bed bugs, stink bugs headline Entomology Meeting in Hartford, Conn.
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/8/2017)... (NASDAQ: AWRE ), a leading supplier of biometrics ... and year ended December 31, 2016. Revenue ... to $6.9 million in the same quarter last year. Operating ... compared to $2.6 million in the fourth quarter of 2015. ... million, or $0.02 per diluted share, which compares to $1.8 ...
(Date:2/7/2017)... Feb. 7, 2017   MedNet Solutions , an ... spectrum of clinical research, is pleased to announce that ... its innovative, highly flexible and award winning eClinical solution, ... iMedNet is a proven Software-as-a-Service (SaaS) clinical ... Capture (EDC), but also delivers an entire suite of ...
(Date:2/3/2017)...  Texas Biomedical Research Institute announced that its Board of ... as the Institute,s new President and CEO. Dr. Schlesinger will ... He is currently the Chair of the Department of Microbial ... Interface Biology at Ohio State University. "We are ... CEO of Texas Biomed," said Dr. James O. Rubin ...
Breaking Biology News(10 mins):
(Date:2/23/2017)... it seems everyone has a chance to express their personalities. ... and dynamic community unlike any other. The businesses that succeed ... With their newest salon in Dunwoody ... that tradition with a unique, fresh approach to head lice ... newest of 13 nationwide locations, each of them well-situated in ...
(Date:2/23/2017)... ... February 23, 2017 , ... ... evaluation of multiple immunoassay-based threat detection technologies by researchers from the Pacific ... biosensor threat detection technology was found to have the best level of ...
(Date:2/23/2017)... , Feb. 23, 2017  Capricor Therapeutics, Inc. (NASDAQ: CAPR), ... medical conditions, today announced that Linda Marbán, Ph.D, president and ... investor conferences: Cowen and Company 37th ... am ET Boston, MA ... 9:00 am PT (12:00 pm ET) Dana Point, ...
(Date:2/22/2017)... , Feb. 22, 2017  Aratana Therapeutics, Inc. (NASDAQ: ... and commercialization of innovative biopharmaceutical products for companion animals, will ... at 8:30 a.m. ET to discuss financial results from the ... Interested participants and investors may access the ... ...
Breaking Biology Technology: