Premium
Performance Evaluation of Integrated Constructed Wetland for Domestic Wastewater Treatment
Author(s) -
Sehar Shama,
Naz Iffat,
Khan Sumera,
Naeem Sana,
Perveen Irum,
Ali Naeem,
Ahmed Safia
Publication year - 2016
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 - 10.2175/106143016x14504669767814
Subject(s) - wastewater , constructed wetland , sewage treatment , wetland , environmental science , environmental engineering , water pollution , waste management , chemistry , environmental chemistry , engineering , ecology , biology
Simple, budget friendly, laboratory‐scale integrated constructed wetland (ICW) was designed to assess domestic wastewater treatment performance at a loading rate of 75 mm/d, planted with native plant species: Veronica‐angallis aquatica and compared with non‐vegetative control system at various residence times of 4, 8, 12, 16, 20, 24, and 28 days. Results revealed that the vegetated ICW demonstrated superior performance over non‐vegetated control: 69.12 vs 17.12%, 67.77 vs 16.04%, 68 vs 16.48%, 71.19 vs 6.56%, 71.54 vs 14.80%, and 72.04 vs 11.41% for total dissolved solids, total suspended solids, phosphates (), sulfate (), nitrate (), and nitrite (), respectively, at 20 days residence times. Reduction in bacterial counts (2.79 × 10 4 CFU/mL) and fecal pathogens (345.5 MPN index/100 mL) was observed in V. aquatica at 20 days residence time. Therefore, the present study highlights not only the presence of vegetation but also appropriate residence time in constructed wetlands for better performances.