Introduction: One of the methods for disposal of sludge is its usage as fertilizer on agricultural. The purpose of this study was to analyze the possibility in the application of sludge to agricultural, according to environmental standards. Materials and Methods: This descriptive-analytic study was conducted for 12 months on dried sludge wastewater treatment plant in Yazd. Monthly sampling and...

In order to create alternatives for the disposal of sludge generated in wastewater treatment plants and contribute reducing environmental impacts by construction industry, aim this work was evaluate technical feasibility partially replacing cement production mortars produced at Bragança WWTP. The characterized relation pH, moisture, total solids, organic matter content, underwent different prep...

Biodiesel also called as fatty acid methyl esters (FAME) has become more attractive because of its environmental benefits. Biodiesel is the most promising renewable, biodegradable, alternative fuel is produced from various lipids sources. Here the municipal secondary sewage sludge is taken as potential sources of lipids. The potential of using sludge from municipal waste water treatment plant a...

Alum sludge refers to the by-product from the processing of drinking water in water treatment works. In this study, groups of batch experiments were designed to identify the characteristics of dewatered alum sludge for phosphorus adsorption. Air-dried alum sludge (moisture content 10.2%), which was collected from a water treatment works in Dublin, was subjected to artificial P-rich wastewater a...

A combined pyrolysis and gasification process for sewage sludge was studied in this paper for the purpose of its safe disposal with energy self-balance. Three sewage sludge samples with different dry basis lower heat values (LHV(db)) were used to evaluate the constraints on this combined process. Those samples were pre-dried and then pyrolysed within the temperature range of 400-550 degrees C. ...