Reuse of faecal sludge in agriculture has many potential benefits, but also poses risks to human health. To better understand the risks, Quantitative Microbial Risk Assessment (QMRA) was performed for three population groups Kampala, Uganda: wastewater and treatment plant workers; farmers using sludge; consumers sludge-fertilised vegetables. Two models were applied consumers, one based on patho...

Waterworks sludge continues to be an inescapable by-product of the potable water treatment process. Accordingly, final disposal of the sludge remains one of the most significant pressing problems for the potable water treatment industry. The possibility of reusing the sludge as a main substrate in a novel constructed wetland system was investigated in this study. Results show that significant p...

Sewage sludge management is an energy intensive process. Anaerobic digestion contributes to energy efficiency improvement but is limited by the biological process. A review has been conducted prior to experimentation in order to evaluate the mass and energy balances on anaerobic digestion followed by gasification of digested sludge. The purpose was to improve energy recovery and reuse. Calculat...

In recent decades, minimization and recycling/reuse policies were introduced to reduce the quantities of generated waste for alternative recovery. Organic wastes represent 46% total global solid waste. Possible uses organic include using it as fertilizer amendment soil, energy recovery production chemical substances. Sewage sludge disposal reuse are identified future problems concerning The amo...

Wastewater use in agriculture is a high-potential alternative for coping with water scarcity. The present study aimed to evaluate the impact of using wastewater and sewage sludge on soil attributes an irrigated maize plantation Brazilian northeastern semi-arid region, at experimental reuse unit. Two plots were installed following treatments: sludge, irrigation only. presence reduced salt conten...

Resource reuse of waste-activated sludge (WAS) from a municipal wastewater treatment plant (WWTP) was introduced as raw material of microbial flocculant (MBF) preparation. With WAS samples of three concentrations, MBF preparation by various methods – including cation exchange resin (CER), CER-ultrasonication, CER-ultrasonication-CER, ultrasonication, ultrasonication-CER, and ultrasonication-CER...

Introduction and Research Objectives Use of organic by-products as soil amendments in agricultural production exemplifies a strategy for converting wastes to resources. Paper mill sludge is one of the largest underutilized organic by-products in Wisconsin. Paper mill sludge (PS) generation in Wisconsin increases approximately 5% per year, and 70% of all PS generated currently (740,000 dry tons)...

Abstract— The effect of calcination temperature on the morphology of plating sludge generated from waste water treatment plant was studied. This waste was hazardous waste due to high toxic metal content [1]. It must be recovered, reuse or recycled before the process but its properties should determined in order to decide recovery method [2]. Previous researches were shown that this kind of wast...

Wastewater treatment plants (WWTPs) require an urgent transition from a linear to circular economy operation/design concept with consequent resource recovery and more sustainable waste management. Natural resources have be preserved, wastes become opportunity for recovering materials (water reuse, energy, sludge reuse). However, the toward is complex long process due existence of technical, eco...

The reuse of treated municipal sewage ('biosolids') on land is an effective method to divert waste away from landfill and to use an alternative, low cost method of fertilisation. While legislation has mainly focused on the control of nutrient and metal application rates to land, other potentially harmful emerging contaminants (ECs) may be present in biosolids. Up to 80% of municipal sewage slud...