Treatment of Iraqi Municipal Wastewater by up-flow Anaerobic Sludge Blanket Reactor UASB

In this work, the Upflow Anaerobic Sludge Blanket “UASB” reactor treated effluent wastewater to investigate process performance on a pilot plant scale. Municipal at high and medium strength with different organic load rate OLR (0.6-9) kg COD m-3day-1 flow of 20 l/h, up-flow velocity 0.4 m/h, hydraulic retention time HRT 9 h temperature (20-30 ºC) was evaluated. The concentration, including TSS, measured, removal efficiencies chemical oxygen demand (COD) total suspended solid TSS were calculated summarized as 45-85% 70-75%, respectively, depending OLR. Effluent volatile fatty acids VFA results in range between 12-90 mg/L slight change pH (8.3-8.4), which means conversion methane increase ammonia concentration.