发明名称 |
Gas-Liquid Distribution Technique for Water or Wastewater Filters Using Underdrains |
摘要 |
A method of distributing gas and liquid through an underdrain system includes: a) positioning an underdrain system on a filter floor, the underdrain system comprising at least one underdrain block and filter media positioned on top of the underdrain block; b) distributing gas sufficiently evenly through the underdrain system at a rate of less than 2 scfm/ft2 by distributing a liquid at a rate of less than 2 gpm/ft2 concurrently with the gas; c) increasing the distribution rate of the liquid, or increasing the distribution rate of the liquid and the distribution rate of the gas; d) stopping the distribution of gas; e) further increasing the distribution rate of the liquid; and f) decreasing the distribution rate of the liquid. A method of distributing gas and liquid during an upflow filtration mode is also included. |
申请公布号 |
US2014166593(A1) |
申请公布日期 |
2014.06.19 |
申请号 |
US201314107843 |
申请日期 |
2013.12.16 |
申请人 |
Xylem Water Solutions Zelienople LLC |
发明人 |
Berkebile Dean T.;Bates Brian J.;Green Robert J. |
分类号 |
B01D24/24;B01D24/46 |
主分类号 |
B01D24/24 |
代理机构 |
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代理人 |
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主权项 |
1. A method of distributing gas and liquid through an underdrain system, the method comprising:
a) positioning an underdrain system on a filter floor, the underdrain system comprising at least one underdrain block and filter media positioned on top of the underdrain block; b) distributing gas sufficiently evenly through the underdrain system at a rate of less than 2 scfm/ft2 by distributing a liquid at a rate of less than 2 gpm/ft2 concurrently with the gas; c) increasing the distribution rate of the liquid after step b), or increasing the distribution rate of the liquid and the distribution rate of the gas after step b); d) stopping the distribution of gas; e) further increasing the distribution rate of the liquid after step d); and f) decreasing the distribution rate of the liquid after step e).
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地址 |
Zelienople PA US |