Aerobic treatment of industrial waste water - experiences with the dosage of nitrogen and phosphorus

摘要

In industrial wastewater, especially from food industry, the concentrations of organic compounds are usually high, whereas the contents of nitrogen and phosphorus are often low. For the aerobic treatment, the addition of nutrients to the industrial wastewater can be requried. For ecological and economic reasons, this nutrient addition must be kept to a minimu. Unintentional nitrification and denitrification lead to an additional demand of nitrogen and shoudl therefore be avoided at such plants.