Process for the denitrification of activated sludge and use of glycerin for the denitrification in a wastewater treatment plant

摘要

In the denitrification of activated sludge, raw glycerin with 80% of glycerin, 50% of acetic acid and less than 0.2% of methanol are added to a biological sewage purification plant for simultaneously reducing phosphorous content during last quarter of biological phosphorus elimination process. The raw glycerin is produced during the production of bio-diesel from rapeseed oil.