Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1977-02-23
1978-11-21
Wyse, Thomas G.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210 25, 210 77, 210 80, 210 82, B01D 2324
Patent
active
041265467
ABSTRACT:
A suspension or emulsion is filtered by causing the same to flow upwards through a zone of filter medium of particle size forming a filter bed while the filter medium concurrently flows in a downward direction through the filter bed zone. Dirty filter medium at the bottom of the filter bed zone is transported to a wash device located above the filter bed zone and is washed as the dirty medium passes downward along a washpath in the wash device in counter current flow to wash liquid which passes upward though the wash device, whereafter the washed medium is returned to the top of the filter bed zone. A zone of filtrated liquid phase is maintained above the filter bed, and a portion of said filtrated liquid phase is supplied to the wash device as the wash liquid.
REFERENCES:
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patent: 3707230 (1972-12-01), Davidson
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Libby et al., Chemical-Physical Treatment of Municipal Wastewater Using Continuous Countercurrent Filtration, Journal Water Pollution Control Federation, vol. 44, No. 4, Apr. 1972, p. 574-582.
The Johns-Manville Moving Bed Filter System for Treatment of Sewage, Johns-Manville Environmental Control Systems technical bulletin No. MBF-1.
Allanson et al., Development of a Continuous Inclined Sand Bed Filter, paper presented at Filtration Society's Conference on Liquid Solid Separation, London, Sep. 16-19, 1975.
Hjelmner Ulf R.
Larsson Hans F.
Cintins Ivars
Rederiaktiebolaget Nordstjernan
Wyse Thomas G.
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