Positive effects of zeolite powder on aerobic granulation: Nitrogen and phosphorus removal and insights into the interaction mechanisms
Positive effects of zeolite powder on aerobic granulation: Nitrogen and phosphorus removal and insights into the interaction mechanisms
复制标题
沸石粉对好氧造粒的积极影响：脱氮除磷及其相互作用机制的见解
DOI：
10.1016/j.envres.2020.110098
复制
发表时间：
2020-12-01
影响因子：
8.3
通讯作者：
Zhang, Peixin
中科院分区：
文献类型：
--
作者：
Lin, Huihua;Ma, Rui;Zhang, Peixin
好氧颗粒污泥被认为是21世纪最有前途的污水生物处理技术之一。但制粒时间长，对N、P的处理效果差，严重限制了其推广和大规模应用。在本研究中，我们系统地研究了沸石粉对造粒、脱氮、除磷的强化作用及其相互作用机制。沸石粉的加入使污泥制粒时间缩短至18 d，平均氮、磷去除率分别提高4.48%和2.22%。沸石粉的多孔、富营养环境有利于维持微生物活性和颗粒稳定性。此外，它对N和P的吸附富集了各自的去除菌株，提高了它们的去除效率。
Aerobic granular sludge is considered one of the most promising biological wastewater treatment technologies of the 21st century. However, the long granulation time and poor treatment effect on N and P have severely limited its popularity and large-scale application. In this study, we systematically examine the strengthening effects of zeolite powder on granulation, N and P removal, and their interaction mechanisms. The addition of zeolite powder decreased sludge granulation time to 18 d, and improved average N and P removal rates by 4.48% and 2.22%, respectively. The multi-pore and nutrient-rich environment of the zeolite powder is beneficial for maintaining microbial activity and granular stability. Moreover, its adsorption to N and P enriches their respective removal strains, improving their removal efficiency.