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Nutrient Removal Performance On Domestic Wastewater Treatment Plants (Full Scale System) Between Tropical Humid And Cold Climates, Pongsak Noophan, Rawiwan Rodpho, Pimook Sonmee, Martha Hahn, Suthep Sirivitayaphakorn

Applied Environmental Research

Two full scale systems of oxidation ditches for domestic wastewater treatment plants (WWTP) were used as study sites: Phuket Province, southern Thailand (representative of tropical humid climates) and Plum Creek, Castle Rock, Colorado, USA (representative of cold climates). The treatment systems at both sites were designed for biological nutrient removal (BNR) fromextended activated sludge. Nitrogen is removed by nitrification-denitrification processes. The solid retention time (SRT) for both treatment plants was = 10 das recommended by theory for complete nitrification in activated sludge wastewater treatment plants. Influents and effluents from these sites were compared in respect to flow rate, biochemical oxygen …