Environmental Restoration and Conservation Technology Section, Research Center for Material Cycles and Waste Management, National Institute for Environmental Studies, Japan.
Water Sci Technol. 2012;65(1):142-8. doi: 10.2166/wst.2011.840.
As a new sludge reduction technology with a phosphorus removal mechanism, a vibration milling technology that uses iron balls have been applied to the wastewater treatment process. Three anaerobic-aerobic cyclic activated sludge processes: one without sludge disintegration; one disintegrated sludge by ozonation; and the other disintegrated sludge with the vibrating ball mill were compared. Ozonation achieved the best sludge reduction performance, but milling had the best phosphorus removal. This is because iron was mixed into the wastewater treatment tank due to abrasion of the iron balls, leading to settling of iron phosphates. Thus, the simple means of using iron balls as the medium in a vibrating ball mill can achieve both a sludge reduction of half and excellent phosphorus removal. Material balances in the processes were calculated and it was found that carbon components in disintegrated sludge were more resistant to biological treatment than nitrogen.
作为一种具有除磷机制的新型污泥减量技术，振动磨技术已应用于废水处理过程。三种厌氧-好氧循环活性污泥工艺：一种不进行污泥解体；一种通过臭氧进行污泥解体；另一种用振动球磨机进行污泥解体。臭氧实现了最佳的污泥减量性能，但球磨具有最佳的除磷效果。这是因为铁球的磨损将铁混入到废水处理池中，导致铁磷酸盐沉淀。因此，使用振动球磨机中的铁球作为介质的简单方法可以实现污泥减量一半和优异的除磷效果。对各工艺的物料平衡进行了计算，发现解体污泥中的碳成分比氮成分更难进行生物处理。
