Improved sludge dewaterability and energy balance of wastewater treatment

摘要

The present invention is a method of treating primary sludge in a wastewater treatment plant, comprising the steps of mixing an organic flocculant and / or polymer into the wastewater, and treating the wastewater primarily in the presence of the organic flocculant or polymer, The present invention relates to a method comprising the steps of separating solids as primary sludge from the primary treatment and dewatering the primary sludge. The invention further relates to a method of improving the dewaterability of primary sludge and improving the energy balance of a wastewater treatment plant.