Abstract Microplastics (MPs) from households, stormwater, and various industries are transported to wastewater treatment plants (WWTPs), where a high proportion of them captured before discharging their residuals watersheds. Although recent studies have indicated that the removed MPs mainly retained in sludge, sludge processes gained less attention MP research than water streams at primary, sec...

To reduce operational costs and carbon footprints, it is highly desirable to achieve energy neutrality in municipal wastewater treatment plants (WWTPs). We reviewed more than 100 nitrification/denitrification (N/DN)- anaerobic ammonia oxidation (ANAMMOX)-based systems. The consumption performance of N/DN systems ranged from 0.3 4 kWh/kg COD 5 15 N, while those ANAMMOX-based 1 0.5 1.5 N. Accordi...

Abstract Struvite from nutrient-rich wastewaters has been identified as a potential substitute for commercial mineral fertilisers, with the added benefit of reducing threats to global food security by prolonging phosphate rock reserves. A fertilisation test using grass (Brachiaria brizantha Marandú) and sand column leaching was conducted determine agronomic effectiveness struvite precipitates p...

The co-disposal of densified sludge and wastepaper in a co-current flow packed bed gasifier represents new application of the thermal gasification process. Advantages of this technolo a gy include lower costs than other incineration or pyrolysis technologies, simple construction and operation, and the ability to a variety of fuels including agricultural wastes and other b.iomass materials in ad...