title: Physical-chemical treatment of rainwater runoff in recovery and recycling companies: Pilot-scale optimization.
abstract: Pilot-scale optimisation of different possible physical-chemical water treatment techniques was performed on the wastewater originating from three different recovery and recycling companies in order to select a (combination of) technique(s) for further full-scale implementation. This implementation is necessary to reduce the concentration of both common pollutants (such as COD, nutrients and suspended solids) and potentially toxic metals, polyaromatic hydrocarbons and poly-chlorinated biphenyls frequently below the discharge limits. The pilot-scale tests (at 250 L h(-1) scale) demonstrate that sand anthracite filtration or coagulation/flocculation are interesting as first treatment techniques with removal efficiencies of about 19% to 66% (sand anthracite filtration), respectively 18% to 60% (coagulation/flocculation) for the above mentioned pollutants (metals, polyaromatic hydrocarbons and poly chlorinated biphenyls). If a second treatment step is required, the implementation of an activated carbon filter is recommended (about 46% to 86% additional removal is obtained).
authors.affiliation: a LIWET, Department of Industrial Biological Sciences, Ghent University Campus Kortrijk , Kortrijk , Belgium.
authors.forename: Evelyne
authors.initials: E
authors.lastname: Blondeel
authors.forename: Veerle
authors.initials: V
authors.lastname: Depuydt
authors.forename: Jasper
authors.initials: J
authors.lastname: Cornelis
authors.forename: Michael
authors.initials: M
authors.lastname: Chys
authors.forename: Arne
authors.initials: A
authors.lastname: Verliefde
authors.forename: Stijin Wim Henk
authors.initials: SW
authors.lastname: Van Hulle
mesh_terms: D001530:Belgium; D002244:Carbon; D003031:Coal; D005374:Filtration / Q000379:methods*; D005427:Flocculation; D000075322:Heavy Metal Poisoning; D019216:Metals, Heavy / Q000737:chemistry; D010865:Pilot Projects; D011041:Poisoning; D011078:Polychlorinated Biphenyls / Q000302:isolation & purification; D011891:Rain; D059027:Recycling / Q000379:methods*; D012822:Silicon Dioxide; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
chemical_list: D003031:Coal; D019216:Metals, Heavy; D014874:Water Pollutants, Chemical; D002244:Carbon; D012822:Silicon Dioxide; D011078:Polychlorinated Biphenyls
keywords: Activated carbon filtration; coagulation/flocculation; dual bed filtration; polluted rainwater runoff; scrap materials; wastewater treatment