Performance of a constructed wetland-pond system for treatment and reuse of wastewater from campus buildings.
A constructed wetland-pond system consisting of two free-water-surface-flow (FWS) wetland cells, a scenic pond, and a slag filter in series was used for reclamation of septic tank effluent from a campus building. The results show that FWS wetlands effectively removed major pollutants under a hydraulic loading rate between 2.1 and 4.2 cm/d, with average efficiencies ranging from 74 to 78% for total suspended solids, 73 to 88% for 5-day biochemical oxygen demand, 42 to 49% for total nitrogen, 34 to 70% for total phosphorous, 64 to 79% for total coliforms, and 90 to 99.9% for Escherichia coli. After passing through the scenic pond and slag filter, the reclaimed water was used for landscape irrigation. There were a variety of ornamental plants and aquatic animals established in the second FWS cell and scenic pond with good water quality, thus enhancing landscape and ecology amenity in campuses.
Ou
Wen-Sheng
WS
Department of Recreation and Health-Care Management, Chia-Nan University of Pharmacy and Science, Taiwan, Republic of China.
Lin
Ying-Feng
YF
Jing
Shuh-Ren
SR
Lin
Hsien-Te
HT
D015169:Colony Count, Microbial; D004755:Enterobacteriaceae / Q000302:isolation & purification; D004926:Escherichia coli / Q000302:isolation & purification; D005618:Fresh Water; D006863:Hydrogen-Ion Concentration; D009584:Nitrogen / Q000302:isolation & purification; D010100:Oxygen / Q000032:analysis; D010758:Phosphorus / Q000302:isolation & purification; D012722:Sewage; D014495:Universities; D014865:Waste Disposal, Fluid / Q000379:methods*; D014873:Water Pollutants / Q000302:isolation & purification; D053833:Wetlands
D012722:Sewage; D014873:Water Pollutants; D010758:Phosphorus; D009584:Nitrogen; D010100:Oxygen