纳米金属对污水生物处理工艺中污泥特性的影响研究

纳米金属有其独特的物理化学性质,被广泛应用于多种工业生产领域以及污水处理过程。当纳米金属进入污水生物处理系统后,可能会对其中的污泥理化特性及微生物群落产生一定的影响,从而影响污水的生物处理效果与稳定性。综述了纳米金属及其金属氧化物对活性污泥、好氧颗粒污泥、厌氧颗粒污泥特性的影响,如有机物、氨氮、总氮等的去除情况,以及对厌氧颗粒污泥甲烷产量的影响,提出了对未来的展望,以期为深入研究纳米金属及金属氧化物对污水生物处理效果的潜在影响提供科学参考。

Influence of nano metal on characteristics of sludge in biological wastewater treatment system

Nano materials have been widely used in various industrial production field and wastewater treatment process due to their unique physical and chemical properties. When nano materials enter into water treatment facilities, they may affect the physicochemical properties of sludge and microbial communities of the therein sludge, thus affect the performance and stability of the biological treatment. The influence of the nano metal and its metallic oxide on characteristics of activated sludge, aerobic granular sludge and anaerobic granular sludge were summarized from aspects of removal of organic matters, ammonia nitrogen and total nitrogen, and methane production of anaerobic granular sludge. The future development direction of nano metal and its metallic oxide was proposed, which could provide a reference for the intensive study of the potential impact of the said kind of material on biological sewage treatment.