Anaerobic digestion or chemical stabilization how to select?

Abstract

Sewage Treatment Plant (STP) Sludges need stabilization before final disposal. The present paper compares two sludge treatment processes: Anaerobic digestion and chemical stabilization using lime. Features such as initial investments, energy costs, operating personnel, sludge disposal, maintenance and chemicals were compared for the sludge output of a 3.300 L/s. Conventional Activated Sludge Treatment Plant treating domestic sewage flow. Careful consideration has been given to the following items before process selection: Initial investment costs, Treatment process characteristics, Daily quantities of sludge to be treated