本幻灯片演示概述了底特律一家水处理厂（WTP）处理废水过滤器反洗和沉淀/混凝污泥的项目，以满足NPDES的许可限制。项目驱动因素包括: 需要增加国家批准的工厂 额定容量从300 mgd到400 mgd mgd；改为改良直接过滤 活动 MDEQ关注废物回收 通过废水反冲洗产生的污染物；和 改善原水水质 消除循环过滤器反洗 水设计挑战包括: 满足DWSD的故障安全要求 操作/冗余； 设计和建造一个低维护的 基本上是自行运行的设施，因此员工可以 更多地关注饮用水的处理，而不是 废水；和 监管机构将项目视为 饮用水设施，而不是 废水处理项目。有益的特点包括: 将固体装载量减少至 沉积盆地导致 手动清理的材料（运维成本） 储蓄）； 系统简单，易于操作； 冗余和 故障安全操作。包括数字。

This slide presentation outlines a project to treat waste filter backwash and sedimentation/coagulation sludges to meet NPDES permit limits at one of Detroit's water treatment plants (WTPs). Project drivers included: need to increase state approved plant capacity rating from 300 mgd to 400 mgd; change to Modified Direct Filtration Operation; MDEQ concerns over recycle of contaminants through waste backwash water; and, improved raw water quality by eliminating recycled filter backwash water. Design challenges included: meet DWSD's requirements for fail safe operation/redundancy; design and construct a low maintenance facility that essentially runs itself, so staff can focus more on treating drinking water than wastewater; and, regulatory agency reviewing project as a drinking water facility rather than the wastewater project. Beneficial features included: reduced solids loading to sedimentation basins resulting in less material to manually clean (O&M Cost Savings); simple, easy to operate system; redundancy; and, fail safe operation. Includes figures.