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EXPERIMENTAL STUDY OF HYBRID CONSTRUCTED WETLAND REACTOR FOR THE TREATMENT OF WASTEWATER

. Mr. Nilesh R. Pal & Dr. P C Charpe


Abstract

This study carried on a series of experiments with a portable vertical subsurface flow constructed wetland reactor for the removal of BOD, COD, Nitrate, turbidity, and pH. To study the treatment mechanism in the soil-plant system, we designed a small scale CW Reactor, planted with typha for Phytoremediation, consist of five filter layers including activated charcoal and synthetic fibre, Hydraulic loading rate of 3.3L/min/m2, of three hour rest period, the portable rector is movable and flexible to install at any location of a wastewater treatment system. Adjustable drovers are provided for easy replacement and washing of materials after clogging of the reactor. The aspect ratio of this rector has assumed to be 1:1.2 based on two dimensions of reactors and the third dimension of reactor have been finalized after the design of all layers of reactors including the freeboard.  A surface flow rate of effluent has been controlled using the control valve at inlet arrangement and it has fixed according to the rate of filtration and retention time of effluent into the various filter layers. A separate disinfection unit has provided for disintegrations of biological impurities, effluents are collected at the outlet of the reactor having removal efficiency of approximately 85 to 90% of mentioned parameters.

Index Terms- Constructed Wetland, Hybrid Constructed reactor, Phyto-remediation, artificial wetland, and sub-surface flow.

 

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