发明名称 |
Apparatus for magnetically filtering wastewaters containing oil-coated mill scale |
摘要 |
Electro-magnetic filter apparatus and method of operating to separate and remove oily magnetic solids from wastewaters. The filter apparatus includes a filter assembly having an electro-magnetic coil that encircles a canister. The canister has an interior space defined by a wall surface and a first perforated baffle spaced apart from a second perforated baffle. The interior space contains a ferromagnetic matrix comprising split ring lock washers. The feed side end portion of the canister communicates with the wastewater source that contains the oily magnetic solids, a wash-water supply, a pressurized air supply and a disposal stream. The discharge side end portion of the canister communicates with a recycling stream, the disposal stream and the wash-water supply. A feed side valve arrangement selectively introduces the wastewater into the feed side end portion of the canister during filtering operations, and selectively injects a pressurized air/wash-water mixture from the wash-water and pressurized air supply into the feed side end portion of the matrix canister during up-flow backwashing operations. The ferromagnetic matrix is fluidized by the pressurized air/wash-water mixture the during the up-flow backwashing. A discharge side valve arrangement selectively discharges clean effluent through the recycling stream during filtering or introduces water, from the wash-water supply, into the discharge end portion of the matrix canister during down-flow backwashing.
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申请公布号 |
US5766450(A) |
申请公布日期 |
1998.06.16 |
申请号 |
US19960719747 |
申请日期 |
1996.09.25 |
申请人 |
BETHLEHEM STEEL CORPORATION |
发明人 |
HERMAN, STEWART T.;GREENAWALT, ROBERT L.;FAUPEL, RICHARD W. |
分类号 |
B01D35/06;B03C1/025;B03C1/032;(IPC1-7):B01D35/06 |
主分类号 |
B01D35/06 |
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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