IFS AND GRIT BOX FOR WATER CLARIFICATION SYSTEMS
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United States of America Patent
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Issued Date -
Aug 23, 2018
app pub date -
Apr 21, 2018
filing date -
Jul 8, 2014
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Abstract
A grit box to separate particulate matter from an influent stream. The grit box has an upper portion and a lower portion with a deflection plate separating the upper portion from the lower portion. It includes a hopper for accumulation of particulate matter settled from the influent stream. The hopper has a drainage pipe and a valve therebetween to control passage of material from the grit box into the drainage pipe. A mechanism delivers the influent stream at a predetermined and substantially constant flow rate. The influent stream is separated into two or more streams which are recombined under pressure in the grit box in a turbulent mixing zone. The fluid rise rate in the grit box is lower than the settling rate of the particulate matter to be separated from the influent stream.
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