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DE2401627A1
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Pressure filter with changing particulate medium - having upwards flow of liq. with medium being extracted from turbulent zone and returned
|
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DE2401608A1
|
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Simultaneous regeneration and sterilisation of resins - for ion exchange columns, using solid bactericide dissolved in regenerating liquor
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DE2333857A1
|
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Back flushing filters - using mixture of liquid and pressurised gas
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CH540714A
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Regenerating ion exchange filter - then flushing with liquid previously purified in auxiliary filter
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CH526334A
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Regenerating ion exchanger filter - by upflow method
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