Filtering method and filtering device

专利名称：Filtering method and filtering device发明人：Yuji Mizuno申请号：US11203452申请日：20050812公开号：US07074338B2公开日：20060711

专利附图：

摘要：Using the filter auxiliary agent separated by backwashing from a filter elementrepeatedly and effectively, the consumption amount of a filter auxiliary agent and thegeneration of industrial waste can be suppressed. In a filter auxiliary agent pre-coatcircuit, a filter auxiliary agent in a pre-coat tank is attached and stacked on a filter

element in a filter case, and a filter auxiliary agent layer is formed. In a filter circuit, thefilter auxiliary agent layer of the filter element removes sludge in the filter treatmentliquid in a main tank. A backwashing circuit breaks down the filter auxiliary agent layer anda sludge layer, separates the filter auxiliary agent layer and the sludge layer by

backwashing from the filter element, and circulates to the pre-coat tank. After repeatingthese steps a plurality of times, the filter auxiliary agent and sludge separated bybackwashing are taken out to the exterior.

申请人：Yuji Mizuno

地址：Tokyo JP

国籍：JP

代理人：Dennis G. LaPointe

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