Design and Application of Efficient Ecological Combination Process in Advanced Treatment of Industrial Tailwater

Journal of Physics Conference Series, Год журнала: 2025, Номер 2941(1), С. 012057 - 012057

Опубликована: Янв. 1, 2025

Abstract In order to solve the advanced treatment problem of industrial wastewater and simultaneously satisfy needs ecological park mode construction, process “efficient three-dimensional ecology + constructed wetland” was designed applied. The technological process, design, operational effect, technical economic analysis project were systematically described. After stable operation for 12 months, average removal rates COD cr , BOD 5 SS, NH 3 -N, TN, TP 86.13%, 81.19%, 90.86%, 97.97%, 84.03%, 80.85%, respectively. effluent system could meet Class III standard requirements “Environmental Quality Standards Surface Water” (GB3838-2002), achieving high-quality resource utilization.

Язык: Английский

Single and Combined Effects of Aged Polyethylene Microplastics and Cadmium on Nitrogen Species in Stormwater Filtration Systems: Perspectives from Treatment Efficiency, Key Microbial Communities, and Nitrogen Cycling Functional Genes

Molecules, Год журнала: 2025, Номер 30(7), С. 1464 - 1464

Опубликована: Март 26, 2025

Microplastics and heavy metal contamination frequently co-occur in stormwater filtration systems, where their interactions may potentially compromise nitrogen removal. Current research on microplastics Cd predominantly focuses soils constructed wetlands, with limited attention given to systems. In this study, the single synergistic effects of aged polyethylene (PE) cadmium (Cd) infiltration systems were investigated from perspectives removal, microbial community structures, predicted functional genes cycling. Results showed that PE demonstrated stronger inhibition NO3−–N removal than Cd. Low-level (PE content: 0.1% w/w) Cd-contaminated inhibitory effect high-level 5% w/w). The mean efficiency under combined Cd50 (Cd concentration: 50 μg/L) PE5 during sixth rainstorm event was 1.04 34.68 times other scenarios. Metagenomic analysis identified keystone genera (Saccharimonadales, Enterobacter, Aeromonas, etc.), critical transformation pathways (nitrate reduction ammonium, denitrification, fixation, nitrification) govern system performance. most pronounced nitrification/denitrification enzymes beyond nitrite oxidase nitrate reductase. These mechanistic findings advance our understanding co-contaminant

Язык: Английский

Bioaugmentation using HN-AD consortia for high salinity wastewater treatment: Synergistic effects of halotolerant bacteria and nitrogen removal bacteria

Journal of Environmental Management, Год журнала: 2025, Номер 381, С. 125355 - 125355

Опубликована: Апрель 14, 2025

Язык: Английский