SLUDGE OF WWTPS, FROM WASTE FAMILY TO SUSTAINABLE DEVELOPMENT

Abstract

Excess sludge treatment and disposal currently represents a rising challenge for wastewater treatment plants due to economic, environmental and regulation factors. There is therefore considerable impetus to explore and develop strategies and technologies for reducing excess sludge production in biological wastewater treatment processes. The main goal of the treatments applied to rough sewage sludge is the reduction of both volumes and injuries. In this paper we presented the possibility of incorporate sludge ash into the composition of cement. An evolution of the mechanical compressive strength according to time (for 2, 7 and 28 days), standard mortars realized with eco-cements developed showed the viability of the valuation recommended for these ash.