title: Wastewater treatment with multilayer media of waste and natural indigenous materials.
abstract: Wastewater treatment using waste materials (refuse concrete, waste paper and charcoal) and natural indigenous rocks (andesite, limestone, granite and nitrolite) in the form of multilayer media was investigated. The removal of suspended solids (SS), phosphate ion, nitrate ion, ammonium ion, toxic metals and chemical oxygen demand (COD) were evaluated for the multilayer wastewater treatment system. Effective removal of heavy metals such as cadmium, chromium, mercury and lead was demonstrated. SS and phosphate ion were removed with relatively high efficiency and the COD after treatment was lessened using certain combinations of media. The present wastewater treatment system is simple, convenient and low cost. Therefore, this method can be applied in small scale plants for wastewater treatment in local and nonexclusive areas.
authors.affiliation: Department of Chemistry for Materials, Faculty of Engineering, Mie University, Tsu, Mie 514-8507, Japan. marahman76@yahoo.com
authors.forename: Mohammad Arifur
authors.initials: MA
authors.lastname: Rahman
authors.forename: Shamim
authors.initials: S
authors.lastname: Ahsan
authors.forename: Satoshi
authors.initials: S
authors.lastname: Kaneco
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Katsumata
authors.forename: Tohru
authors.initials: T
authors.lastname: Suzuki
authors.forename: Kiohisa
authors.initials: K
authors.lastname: Ohta
mesh_terms: D019149:Bioreactors; D002412:Cations; D019015:Geologic Sediments; D008420:Manufactured Materials; D019216:Metals, Heavy / Q000302:isolation & purification; D009566:Nitrates / Q000302:isolation & purification; D010100:Oxygen / Q000032:analysis / Q000378:metabolism; D010710:Phosphates / Q000302:isolation & purification; D000644:Quaternary Ammonium Compounds / Q000302:isolation & purification; D012722:Sewage / Q000737:chemistry / Q000382:microbiology*; D014865:Waste Disposal, Fluid / Q000379:methods*; D018508:Water Purification / Q000379:methods*
chemical_list: D002412:Cations; D019216:Metals, Heavy; D009566:Nitrates; D010710:Phosphates; D000644:Quaternary Ammonium Compounds; D012722:Sewage; D010100:Oxygen