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Ramprasad, C.
- Greywater Treatment Using Horizontal, Vertical and Hybrid Flow Constructed Wetlands
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Authors
C. Ramprasad
1,
Ligy Philip
1
Affiliations
1 Department of Civil Engineering, Environment and Water Resource Engineering Division, Indian Institute of Technology Madras, Chennai 600 036, IN
1 Department of Civil Engineering, Environment and Water Resource Engineering Division, Indian Institute of Technology Madras, Chennai 600 036, IN
Source
Current Science, Vol 114, No 01 (2018), Pagination: 155-165Abstract
The performance evaluation of three pilot scale subsurface flow constructed wetlands (CW), i.e. horizontal flow (HFCW), vertical flow (VFCW) and a baffle type-hybrid (HYCW) was studied. The units were continuously fed with greywater and were planted with Phragmites australis. The inflow concentrations of BOD, COD, TSS, NO3, TP and FC were in the range of 72–120 mg/l, 216–320 mg/l, 224–320 mg/l 10.3–14.6 mg/l, 2.9–3.8 mg/l and 50–120 CFU/100 ml respectively. The average removal efficiencies of BOD, COD, TSS, TP, TN and FC in HYCW were 95 ± 2%, 96 ± 3%, 98 ± 2%, 92 ± 2%, 98 ± 2% and 98 ± 2% respectively and comparatively more than the other two constructed wetlands.Keywords
Constructed Wetlands, Hybrid Flow, Horizontal Flow, Organics and Nutrients, Phragmites australis, Vertical Flow.Full Text
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