Open AccessPerformance of different types of constructed wetlands for treating wastewater in short time horizon
Author(s) -
S. Vanitha
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/955/1/012095
Subject(s) - constructed wetland , wetland , total suspended solids , environmental science , wastewater , environmental engineering , chemical oxygen demand , sewage , water quality , suspended solids , sewage treatment , total dissolved solids , subsurface flow , stage (stratigraphy) , hydrology (agriculture) , ecology , geology , geotechnical engineering , paleontology , groundwater , biology
Constructed wetland is one of the well-knowncost-effective technologies for treating domestic sewage. This work is mainly focuses to study the performance of constructed wetland at initial stage of wetland. Three types of constructed wetland namely Vertical Flow Constructed Wetland (VFCW), Horizontal zigzag flow Constructed wetland (HFCW) and Upflow Constructed Wetland (UFCW) were made based upon the direction of water flow through porous medium. The primary treated sewage is passed through three wetlands and the water quality was tested before and after treatment. Wetland performance was analyzed continuously for one month after sapling stage. Water quality parameters such as pH, Temperature Total Suspended Solids (TSS), Total Dissolved Solids (TDS), Chemical Oxygen Demand (COD), Nitrates (NO 3 - ) and Phosphate (PO 4 - ) were tested. Removal of COD and Phosphates are uniformly increasing for this duration. The maximum removal of COD, TSS and Phosphates are 40%, 30%, 87% and 45% respectively. Nitrification is good from initial stage of constructed wetland. In one month experimental period, removal of solids is not stable. It was observed that, heavy fluctuation was occurred during experimental period. But increasing trend is observed in the removal of solids. Also it is recommended that more sampling is needed at initial stage of constructed wetlands.