TREATMENT OF SULLAGE WATER USING CONSTRUCTED WETLAND

Abstract

Constructed wetland (CW) is a cheap and effective waste water treatment in small communities. The term constructed wetland is used to describe restored and recultivated land that was destroyed in the past through draining and converting into farmland or mining. It is a man-made wetland created for the purpose of treating municipal or industrial waste water, grey water or storm runoff. In this project, the treatment of sullage water is carried out in a pilot scale reactor setup in which Maize was planted with a surface flow wetland and monitored frequently. Characteristics of sample like COD,BOD, total and dissolved solids ,hardness was found initially and the same test was  carried out for the effluent taken from the reactor setup everyday to estimate the decrease in pollutant level. The results of initial waste water sample and effluent was compared and it is found that the COD & BOD is reduced to maximum when compared with all other parameters. The percentage efficiency of COD and BOD removal was 89.67%& 90.41% respectively and it implies that the waste water is treated effectively. The treated wastewater can be used further for flushing and other purposes.