title: Suitability assessment of grey water quality treated with an upflow-downflow siliceous sand/marble waste filtration system for agricultural and industrial purposes.
abstract: The present study examines the suitability assessment of an upflow-downflow siliceous sand/marble waste filtration system for treatment and reuse of grey water collected from bathrooms of the student residential complex at the Higher Institute of Engineering Medjez El Bab (Tunisia). Once the optimization of grey water pre-treatment system has been determined, the filtration system was operated at different hydraulic loading rate and media filter proportions in order to assess the suitability of treated grey water for irrigational purpose according to salinity hazard, sodium hazard, magnesium hazard, permeability index, water infiltration rate, and widely used graphical methods. Suitability of the treated grey water for industrial purpose was evaluated in terms of foaming, corrosion, and scaling. Under optimal operational conditions, results reveals that treated grey water samples with an upflow-downflow siliceous sand/marble waste filtration system may be considered as a good and an excellent water quality suitable for irrigation purpose. However, treated grey water was found not appropriate for industrial purpose due to high concentrations of calcium and sodium that can generate foaming and scaling harm to boilers. These results suggest that treated grey water with an upflow-downflow siliceous sand/marble waste filtration system would support production when used as irrigation water.
authors: National Agronomic Institute of Tunisia, University of Carthage, Mahragène City, Tunisia. chaabanesafa@ymail.com.
authors: Safa
authors: S
authors: Chaabane
authors: Higher Institute on Rural Engineering and Equipment, University of Jendouba, Medjez El Bab City, Tunisia.|Laboratory LRME, Faculty of Science of Tunis, University of Tunis-El Manar, El Manar City, Tunisia.
authors: Khalifa
authors: K
authors: Riahi
authors: Direction of Soil Resources, DGACTA, Ariana City, Tunisia.
authors: Hédi
authors: H
authors: Hamrouni
authors: Higher Institute on Rural Engineering and Equipment, University of Jendouba, Medjez El Bab City, Tunisia.
authors: Béchir Ben
authors: BB
authors: Thayer
mesh_terms: D002119:Calcium Carbonate; D005374:Filtration; D014416:Tunisia; D018508:Water Purification; D060753:Water Quality
chemical_list: D002119:Calcium Carbonate
keywords: Grey water; Grey water reuse; Industrial purpose; Irrigation; Marble waste; Siliceous sand; Tunisia; Upflow-downflow filtration