Research Results of Water Sludge Treatment Technological Process

Abstract

The article presents the results of experimental research conducted at the experimental sites of the Kalashnikov Izhevsk State Technical University basic department «Engineering systems of housing and communal services» and sewage treatment facilities ofMunicipal Unitary Enterprise“Izhvodokanal”. The aim of the experiments was to study the influence of water supply sludge on the composite ceramic (fired) building material properties:compressive strength, fire shrinkage, as well as on the properties of filtering material intended for deep treatment (additional treatment) of municipal wastewater. The scientific premise of the possible water-pipe sludge application as an additional additive to natural clay in the production of composite ceramic building materials (bricks, tiles) with possible use in «green» construction, and due to the preservedaluminum hydroxidereactivity - the use as a filtering material for deep treatment (after-treatment) of wastewater is considered. The stages of experimental research on manufacturing and testing of samples of ecologically clean firing ceramic building material with the use of water sludge from the water treatment plant from the water supply source - the River Kama - are presented. The main directions of water supply sludgeutilization, mainly compacted sludge, to be applied in «green»construction are presented. The research was carried out within the framework of the program of development of scientific and pedagogical personnel of Kalashnikov Izhevsk State Technical University «Scientific substantiation of the animal waste and sewage sludge utilizationtechnology in a single cycle at a biogas plant». The results of efficiencyevaluation of iron, manganese, petroleum products, suspended solid removal, reduction of chemical oxygen demand (COD) from wastewater filtered through the loading layer consisting of tap sludge are presented.