Integrated Sequential Anoxic Aerobic (ISA) Reactor for Organic Matter and Nutrient Removal from Wastewater

The removal of nitrogen and organic matter using an integrated single reactor composed of aerobic and anoxic zones has been a common focus in this investigation. This study aimed to develop a novel Integrated Sequential Anoxic-Aerobic (ISA) reactor for organic matter and nutrient removal and assess the performance in terms of organic matter and nitrogen removal with respect to different reactor configuration. Two identical reactors was fabricate using clear acrylic Perspex with maximum working volume of 5.5L. It is operated under continuous aeration maintaining 2mg/L of dissolved oxygen (DO) in aerobic zone and internal recycle rate of three times the influence flow rate with hydraulic retention time (HRT) of 24 hours. Two different location of influence flow into the reactor were tested in two difference phase (Phase 1 and Phase 2) which low and medium strength of untreated domestic wastewater characteristic is used. Reactor A influence will enter through the aerobic part while Reactor B is through the anoxic part of the reactor.