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Performance of a Constructed Wetland‐Pond System for Treatment and Reuse of Wastewater from Campus Buildings
Author(s) -
Ou WenSheng,
Lin YingFeng,
Jing ShuhRen,
Lin HsienTe
Publication year - 2006
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143006x95465
Subject(s) - wetland , constructed wetland , environmental science , biochemical oxygen demand , effluent , septic tank , reclaimed water , environmental engineering , total suspended solids , water quality , wastewater , land reclamation , pollutant , sewage treatment , suspended solids , hydrology (agriculture) , chemical oxygen demand , ecology , engineering , biology , geotechnical engineering
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.