摘要
强化脱氮是污水处理厂深度处理控制水体富营养化的关键。在中试规模的高浓度污泥系统中,通过向其中投加粉末状硫铁矿载体,通过原位强化反硝化效能和新陈代谢性能,成功实现短程强化脱氮,水力停留时间也缩短至3.6 h。由于投加的硫铁矿粉末有一定的附着面积,所以在一段时间培养后的粉末表面能观测到致密的生物膜,这也对高浓度污泥的沉降、系统的稳定运行有一定的促进作用。
Enhanced nitrogen removal is essential for advanced treatment in wastewater treatment plants to control water eutrophication.In this pilot-scale high-concentration sludge system,enhanced nitrogen removal is successfully achieved using in-situ strengthening of the denitrification intensity and bacterial metabolism performance,by adding powder pyrite carriers.The hydraulic retention time was also shortened to 3.6 h.The pyrite powder has a certain adhesion surface,where dense biofilm can be observed after a period of steady cultivation,which also promotes the settlement performance of high-concentration sludge and the stable operation.
作者
汪秀仲
柴晓利
Wang Xiuzhong;Chai Xiaoli(College of Environmental Science and Technology,Tongji University,Shanghai 200092,China)
出处
《山东化工》
CAS
2021年第2期272-274,共3页
Shandong Chemical Industry
基金
重污染河流负荷削减与污染控制技术集成与示范(2017ZX07202002)。
关键词
反硝化
硫铁矿
短程脱氮
denitrification
pyrite powder
short-cut nitrogen removal
