The constructed wetland was applied for initiating the domestic wastewater treatment process. Variation of plant density and Hydraulic Retention Time (HRT) were observed. Domestic treatment performance was improved by increasing plant density and HRT, but only HRT of 4 days could be achieved. Thailand’s effluent discharge standard was studied. Vegetation or non-vegetation wetland could remove total suspended solid due to physical mechanisms (filtration, sedimentation, and adsorption), while Chemical Oxygen Demand (COD) and ammonium were removed by plants and microorganisms attached at the root zone and wetland media. Using constructed wetland for thermal transfer reduction and sewage treatment purposes could be applied at a plant density of 20 plants/m2 and HRT of 4 days. Moreover, increasing plant density could reduce heat transfer to houses because of rising relative humidity around the wetland area and nearby atmosphere.
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To Cite this article
A. Panrare, T. Tondee and P. Sohsalam, “Effect of plant density in constructed wetland on domestic wastewater treating efficiency” International Journal of Applied and Physical Sciences, vol. 2, no. 1, pp. 7-12, 2016.
