A method for solubilizing particulate or colloidal materials in wastewater treatment comprising the steps of cultivating aerobic bacteria in the presence of oxygen in an activator solution containing a food source until the level of the food source drops below 50 mg/l of soluble chemical oxygen demand...http://www.google.se/patents/US4882059?utm_source=gb-gplus-sharePatent US4882059 - Solubilization of organic materials in wastewater treatment