Invention Grant
US08747667B2 Water filter apparatus incorporating walnut shell filter media and a draft tube system 有权
包含核桃壳过滤介质和引流管系统的滤水装置

Water filter apparatus incorporating walnut shell filter media and a draft tube system
Abstract:
The present invention relates generally to a system and method for treating wastewater in a filter media apparatus having a draft tube system. The filter media may be walnut shell media.
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