发明名称 |
MULTILAYER MEDIA BED FILTER WITH IMPROVED BACKWASH |
摘要 |
A multi-layer media bed filter with an increasing density of media from the finest media on the top to the coarsest media on the bottom is backwashed using air without significantly disrupting stratification of the media layers. When the air is stopped, the contaminants in the liquid above the finest media that were removed by the airflow are flushed away either with liquid injected above the media or by a liquid flow through the media that does not remove the finest media. The amount of contaminants that remain in the finest media with the stratification-maintaining air backwash is significantly less than when using liquid backwash alone, whether the liquid backwash uses a flow rate sufficient to suspend the micromedia or below a suspending flow rate. |
申请公布号 |
WO2016196594(A1) |
申请公布日期 |
2016.12.08 |
申请号 |
WO2016US35216 |
申请日期 |
2016.06.01 |
申请人 |
NEPTUNE-BENSON, LLC |
发明人 |
SILVERWOOD, Alain;BOSISIO, Marco |
分类号 |
B01D24/00;B01D24/14;B01D24/46 |
主分类号 |
B01D24/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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