Sewage Treatment Plants (STP) and Effluent Treatment Plants (ETP) are critical for wastewater management, but they often generate odorous and hazardous gases such as hydrogen sulfide (H₂S), ammonia (NH₃), and volatile organic compounds (VOCs) from units like equalization tanks, aeration tanks, and sludge handling systems. The Apzem odour control unit is specifically engineered to address these emi...