A method to reduce the aerobic sludge water in a water treatment and enhance the residual sludge.

摘要

The invention provides a process for the purification of sewage water with the three-fold purpose: - to substantially reduce the operating costs associated with the purification of sewage water. - the substantial improvement of the energy performance of the purification process - the avoidance for the avoidance of fossil energy for drying sludge The new process involves an expansion of the conventional purification process with the sub-steps: first, the separation of a high-fiber fraction from the influent 2 Increasing the heating value of the separated fraction by means of thickening and or drying. 3, the local utilization of the thermal energy from the fiber fraction, whether or not enriched with aerobic sludge as a dry energy 4 The drying and pelletizing or incineration and gasification of or all of the excess aerobic sludge. The process is preferably carried out at the water treatment plant itself, and a modular design.