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A full year of operational data from a Grade 3A hospital in Yichang, China shows an A/O-MBBR system treating hospital wastewater at a carbon intensity of 0.50 kg CO2-eq/m3 with 0.70 kWh/m3 unit power, 66% lower carbon than equivalent MBR systems, following IPCC 2019 guidelines.

This study tracks microplastics through a pilot-scale activated sludge system treating secondary wastewater, showing that 70-95% of polyethylene and polypropylene particles (10-500 um) are retained in sludge through flocculation, adsorption, and entrapment. Fibrous microplastics and larger particles are captured more readily, while particles under 50 um tend to escape into effluent. The analysis also covers sludge age trade-offs and the secondary pollution pathway when sludge is reused in agriculture.

This study investigates the optimization of aeration strategies in sequencing batch reactors (SBR) to enhance BOD and COD removal in secondary wastewater treatment. Different aeration patterns and durations were tested to evaluate their impact on nutrient removal efficiency and energy consumption, providing guidance for cost-effective process control.

This article analyzes critical engineering design adjustments for inclined tube settlers, focusing on water distribution and collection uniformity. By addressing hydraulic turbulence, floc breakage, sludge disturbance, and collection trough selection, it provides practical solutions to enhance sedimentation efficiency, particularly for water plants in northern regions.

This study evaluates the performance of biofilm-based secondary wastewater treatment systems for treating municipal wastewater with high ammonia concentrations. The research focuses on nitrification efficiency, biofilm stability, microbial adaptation, and operational optimization under varying hydraulic and organic loading conditions.

This article discusses the principles, applications, and advantages of zero-liquid discharge (ZLD) systems for aquaculture wastewater treatment. It highlights nutrient recovery, water reuse, and environmental benefits.

This study compares FBBR and MBBR systems for industrial wastewater treatment, highlighting efficiency, operational requirements, and optimization strategies for high-strength effluent.

This article examines the principles, mechanisms, and applications of electro-Fenton processes in treating aquaculture wastewater. It highlights organic pollutant degradation, nitrogen and phosphorus removal, and system optimization for sustainable aquaculture.

This article reviews 2023 developments in constructed wetland systems integrated with aquaculture, focusing on nutrient removal efficiency, ecological treatment mechanisms, design optimization, and sustainable water reuse strategies.

This article reviews the 2023 advancements in membrane bioreactor (MBR) technology for aquaculture wastewater treatment, highlighting system design, pollutant removal efficiency, operational challenges, and future prospects.