Inspire : Public Works Mar Apr 2015
Vegetative material can easily accumulate in drainage systems. Piles of leaves and other debris get swept into our stormwater drains only to decompose in the water system, potentially leading to water contamination. City of Gosnells in Western Australia was facing this exact problem when it was contacted by local Perth supplier TemFlow. The TemFlow Drain Basket and Insert (DB&I) is ﬁtted to Side Entry Pits (SEP’s and Gully Pits (Grate). It is designed to removes wind and water bor ne waste before it enters the drainage system. The device must not block water drainage, so the TemFlow DB&I ﬁlters the water and waste entering the unit to 150 microns, according to CSIRO tests. The device has been approved by a number of organisations, including Department of Water, Swan River Trust, Department of Environmental Regulation, Water Corporation, Local & State Government & Councils & Industry with CSIRO, Curtin University & ChemCentre carrying out all data analysis. City of Gosnells was trying to prevent leaf litter and the like get into its piped drainage systems and was keen to try TemFlow’s in drain system. It had previously relied solely on street sweeping to prevent the build up of waste material in the streets. The council chose to trial the technology in 18 drains across its locality in one street. Over the 12-month trial period, it removed approximately 1001kg of vegetative material. Road sweeping was also carried out during the course of the year as well. David Denton, City of Gosnells' Manager Engineering Operations & Waste Ser vices found the device to be a good accompaniement to street sweeping, its preferred method of collection. "Templug is a good method for trapping debris and very suitable for densely vegetated areas inaccessible to sweepers," says Denton. Despite its positive experience of the product, City of Gosnells has currently put use of the TemFlow product on hold, subject to future funding. ••• 31 FILL YOUR BASKET City of Gosnells in Western Australia, prevented more than 1000kg of debris entering its drainage systems when trialling an in-drain system. STORMWATER DOITONOUR ONLINE FORUMS: Visit goo.gl/MN6xwr to discuss this article. MORE TO ADD? TemFlow provides councils with a way to collect vegetative waste at source. Waste is collected before it enters and contaminates the water system.
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