Surface & Groundwater
Industrial & Municipal WWT | Sludge | Drinking Water | Surface & Groundwater |VOC Recovery | Defoamers | Amines | Analytical Laboratories
Biological WWT with O2
High purity oxygen supplied either as a liquid delivered to site, or as a gas generated on site, can be applied effectively to aerobic biological waste water treatment processes to allow the Dissolved Oxygen content of the plant to remain at optimum levels, even during peaks of BOD, COD and ammonia. Air Products’ Oxy-Dep range of technologies provide efficient oxygenation (usually >90% Oxygen Transfer Efficiency), where high loads exist.
Oxy-Dep also provides a reduction in odours, surface foaming, aerosols and VOCs, as well as improved sludge settling and dewatering, either when retrofitted, or in a purpose-built activated sludge plant. Oxygen is often successfully used in combination with aeration.
Emergency Oxygenation
Dissolved Oxygen (DO) shortage can cause catastrophes in both natural waters and aerobic waste water treatment plants. In periods of high BOD and COD loading, or high ambient temperatures where biological activity and oxygen uptake rate are high, DO can fall to zero levels. At such times, higher aquatic life dies, odours can cause nuisance, and waste water discharges can exceed consent levels.
High purity oxygen brings immediate relief to oxygen shortfall. Air Products’ rapid response oxygen supply via Oxy-Dep jet mixing equipment or Fine Bubble Diffusers can be installed on site quickly and effectively, often within 48h of request.