Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1977-04-07
1978-05-30
Hart, Charles N.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210 75, 210169, 210193, 210501, 424132, C02B 310
Patent
active
040922456
ABSTRACT:
A system for purifying bodies of water, such as swimming pools, includes a prefilter upstream of a catalytic filter, and a pump for periodically circulating water to be treated through the prefilter and then through the catalytic filter. The catalytic filter includes a series of horizontally disposed filter elements each having a stationary layer of a permeable water-purifying biocatalyst composition. The preferred biocatalyst is a microbicidal surface compound formed by wet processing finely divided silver oxide, zinc oxide and lampblack. Water circulated through the prefilter is filtered to remove suspended solids or algae which would clog or otherwise disturb the biocatalyst filter cake. Water circulated through the catalytic filter is purified by surface contact with the biocatalyst. Repeated pool water contact with the biocatalyst generates a residual microbicidal condition in the pool water. The biocatalyst layer, the water circulated to it, and the water circulated away from it are constantly maintained at a pH above 7 and at a temperature between about 70.degree. F to about 98.degree. F to prevent deactivating the biocatalyst and to constantly maintain the residual microbicidal condition.
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Franks, administratrix by Dorothy G.
Franks, deceased Robert E.
Goetz, Trustee Sylvia
Hart Charles N.
Hruskoci Peter A.
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