Biosolids and Sludge Management

Abstract

This review section covers journal articles and conference papers related to biosolids and sludge management that were published in 2011. The literature review has been divided into the following sections:• Biosolids regulations and management issues,

Co-digestion of sewage sludge and crude glycerol for on-demand biogas production

“…Sludge management can account for up to 60% of the total cost associated with municipal wastewater treatment (Ramakrishna & Viraraghavan, 2005). As a result, significant effort has been devoted toward minimising sludge generation (Semblante et al, 2014) and optimising sludge treatment (Brisolara & Qi, 2011;Wang et al, 2008). Among several options currently available for sewage sludge treatment, anaerobic digestion is probably the most widely used technology.…”

Oxidation reduction potential as a parameter to regulate micro-oxygen injection into anaerobic digester for reducing hydrogen sulphide concentration in biogas

“…Anaerobic digestion is the most widely used technique for treating sewage sludge in medium and large wastewater treatment plants (Brisolara and Qi, 2013;Jenicek et al, 2012;Jenicek et al, 2010;Wang et al, 2013). Anaerobic digestion is also widely used for the treatment of organic waste materials such as agro-waste and the putrescible fraction of municipal solid wastes (Karthikeyan and Visvanathan, 2013).…”

“…During this process, substantial reductions in the quantity of pathogenic organisms can be achieved. As readily biodegradable solids, known as volatile solids (VS), are substantially removed by anaerobic digestion, the final product is stable and can be suitable for agricultural use (Brisolara and Qi, 2013). If captured, the biogas produced from anaerobic digestion is a form of renewable fuel and can be used for heat and electricity generation to off-set the energy input into wastewater treatment (Jenicek et al, 2012).…”

Pyrolysis of Dried Wastewater Biosolids Can Be Energy Positive

“…Even though it is difficult to judge which thermochemical disposal process is the best ultimate solution, pyrolysis could be a biosolids handling process that offers simultaneous energy recovery and production of a value-added soil amendment (Bridle and Pritchard., 2004). Pyrolysis is the decomposition of organic matter upon heating under anaerobic conditions and is typically conducted at temperatures greater than 400 8C (Laird et al, 2009;Brisolara and Qi, 2011;Yuan et al, 2013).…”