Microplastics in Lake Laut Tawar were characterized in water and sediment. Zeolite, silica, and activated carbon showed substantial removal, demonstrating their potential as low-cost media for freshwater treatment.
Climate-resilient WASH is still treated as an optional extra rather than a baseline requirement. We trace this to an accountability gap in development finance and argue resilience is necessary for WASH systems viability.
Local multisource records support risk-aware prediction and uncertainty-informed screening of wet-weather overflow pollution from misconnected stormwater pumping stations.
Detachment models can yield similar steady-state MABR predictions yet diverge significantly under dynamic conditions. Our comparison of three models shows that function structure should be considered carefully during model calibration.
This review summarizes analytical methods for inorganic, total, and organic iodine in water, highlighting methodological challenges and their relevance to disinfection byproduct formation.
On-site sanitation in cold and arid regions. Evaluation of existing dry toilets in cold and arid regions. Resource recovery from human excreta. Dry toilets in water-stressed areas with the generation of a circular economy.
Conformal deep model for BOD interval prediction, validated on two WWTPs. BiGRU balances accuracy, coverage, sharpness; SHAP identifies key drivers: historical BOD, influent COD, SS.
Dosing sequencing batch reactors with hospital wastewater elevated clinically relevant vancomycin and beta-lactam antibiotic resistance genes examined using metagenomic sequencing.
Municipal utilities are expected to monitor and manage a growing universe of contaminants of emerging concern (CECs), spanning per- and polyfluoroalkyl substances (PFAS) and a wide range of non-PFAS organic...
Engineering the coordination microenvironment of single-atom catalysts governs oxidant activation and pathway selectivity, enabling efficient, stable, and selective removal of pollutants, antibiotics, and heavy metals from complex waters.
The multi-point adhesion of foulants can be disrupted by constructing charge-mosaic membranes with alternating charged domains.
Humus-amended activated sludge generates hydroxyl radicals during anaerobic–aerobic switching. A Fe–quinone redox network stores reducing equivalents anaerobically and releases oxidative capacity upon aeration.
The U.S. EPA recently announced the revision of the Lead and Copper Rule to establish a new lead action level at 10 mu g L-1; however, the formation and release of lead phosphate nanoparticles in drinking water are ubiquitous in lead-containing drinking water distribution systems, and these particles are poorly removed by conventional filters, thus making it challenging for lead control in light of the new regulation. To address this urgent issue, this study developed a treatment train combining hydrogen peroxide photolysis (UV/H2O2) pre-oxidation with point-of-use (POU) filtration to efficiently remove lead phosphate nanoparticles (nano-Pb3(PO4)2(s)) from drinking water. The results showed that hydroxyl radicals produced via UV/H2O2 oxidized divalent nano-Pb3(PO4)2(s) to tetravalent lead dioxide solid PbO2(s) and aggregated them into larger cluster particles, facilitating efficient removal by subsequent POU filtration. Without the UV/H2O2 pre-oxidation, stand-alone POU filtration was ineffective at reducing the nano-Pb3(PO4)2(s) concentration below 10 mu g L-1. Furthermore, UV/H2O2 pre-oxidation was effective in diverse drinking water chemical conditions at varying levels of pH (6-8), chloride (0-50 mg L-1), and alkalinity (0-200 mg L-1 as CaCO3). Overall, this study provides an urgently needed and promising lead removal technology that is robust to guarantee drinking water safety to consumers.
Conventional CFD predicts reactor-scale hydrodynamics in wastewater bioreactors but struggles with micro-scale phenomena. A hybrid multi-scale framework coupled with LBM offers a promising path for next-generation bioreactor design.
The restriction imposed by the Donnan effect on ion transport could be controlled by constructing a charge-mosaic structure.
Pre- and polyfluoroalkyl substances (PFASs), highly persistent anthropogenic pollutants, are reviewed in terms of their classification, toxicity, and degradation by peroxymonosulfate-based AOPs.
Low dissolved oxygen (DO) operation in suspended growth biological nutrient removal (BNR) systems has become increasingly important for energy-efficient and intensified treatment processes.
This review critically examines recent advances in high-rate algal ponds for wastewater treatment, highlighting performance improvements, operational challenges, and opportunities for scale-up and resource recovery.
