Abstract:
Grey water is the waste water, obtained from outlets of bathroom kitchen wash
basins etc. Recycling of grey water is a best solution for water shortage and by
improving water availability. Students residing in Ladies‟ Hostel of KCAET deal with
plenty of water for bathing and other sanitation purposes.
The purpose of this project was a grey water recycling system by using
subsurface flow constructed wetland that will provide water specifically for irrigation
purposes. The objectives of the project were to design and construct a subsurface flow
constructed wetland for grey water treatment and to evaluate performance parameters of
the system. The system consists of conveying system, sedimentation tank, SFCW and a
collecting tank. Suitable filter medium were selected and used in SFCW. The emerging
plants, that are locally available in the area was selected for planting in constructed
wetland. Change in water quality after passing through the treatment system evaluated
for BOD 5 , COD, TSS, TN, TP, TS, salinity, p H , oil and grease content. Variation of
hydraulic retention time with change in flow depth and change in flow volume was also
evaluated.
