Treatment of septage. European practice. VA 11/82

Abstract

Treatment of septage is a major problem in many European countries. Most countries in Europe handle the septage by discharging it to the sewer line or at the treatment plant inlet. In Scandinavia septage is guite often discharged directly to the sludge treatment facility at a municipal treatment plant. Operational problems at wastewater treatment plants due to septage addition have often been severe. Septage contains 30-40 l/m³ septage of screening, grit and sand that have to be removed prior to sludge processing. Handling of septage creates an odor problem that has to be taken seriously. Different odor reduction systems are presently in use at existing treatment plants