Filtering apparatus having positively buoyant and negatively buoyant particulate

作者: William D. Hawk , Gary D. Cryer

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摘要: A filtration system having a volume of positively buoyant particulate material and negatively material. The includes vessel an upper port, lower port intermediate drain port. As contaminated liquid travels between the ports, it is filtered through both volumes may be operated with flowing in either direction ports. To clean system, opened cleaning pumped into and/or flushed out An alternate embodiment vessel, two tubular members, members extend have slotted areas for travel members. check valve, motorized slide valve backwash controller are provided to automatically reverse flow vessel.