硫铁矿粉末在生活污水高浓度污泥工艺中的应用研究  

The Application of Pyrite Powder in High-Concentration Activated Sludge System Treating Municipal Wastewater

作　　者：汪秀仲 柴晓利[1] Wang Xiuzhong;Chai Xiaoli(College of Environmental Science and Technology,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学环境科学与工程学院,上海200092

出　　处：《山东化工》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)。

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.

关 键 词：反硝化 硫铁矿 短程脱氮 

分 类 号：X703[环境科学与工程—环境工程]