Phosphorus Accumulation in Wetland for Food Processing Wastewater Treatment
A gaseous form of phosphorus, phosphine (PH3) has not frequently found in environment. Phosphine is soluble in water, but has a high vapor pressure. It may be emitted from regions of extremely low redox potential as in a high water level in constructed wetland. The food processing wastewater was fed in wetland at various organic loading rate (OLR). The phase of phosphorus accumulation in wetland was studied by using six plant species, Cyperus involucratus, Canna siamensis, Heliconia spp., Hymenocallis littoralis, Typha augustifolia and Thalia dealbata J.Fraser, under 3 OLR. Accumulation in each part of wetland (plant tissue, sediment, treat wastewater, media) was observed. Increasing of OLR can increase the absent of phosphorus as phosphine. Reduction of OLR increased phosphorus accumulation in plant tissue.