Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1976-12-22
1979-06-12
Hart, Charles N.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210 35, 210 40, 210 73S, 210265, 210275, 210284, C02C 502
Patent
active
041579615
ABSTRACT:
Polluted waste water is combined with preferably shredded trash including organic trash components to form a water-trash mixture from which inorganic substances such as sand are initially gravitationally setted out and removed. The trash-water mixture is then passed into a roughing filter constructed of a plurality of individual, replaceable filter elements stocked with non-activated carbon to remove floating and suspended particulate matter from the mixture. Thereafter, the water is flowed through a fine filter, also constructed of individual filter elements but stocked with activated carbon for the removal of remaining particulate matter as well as dissolved substances. The filter elements are intermittently regenerated by heating the coal and the residue deposited thereon under an oxygen deficiency to degas organic matters of the residue and form additional filter carbon, both non-activated and activated carbon. Trash may further be separately incinerated, also under an oxygen deficiency to generate heat for the degassing process and to generate additional combustible gas which is used to drive motors or turbines for generating electricity. Motor exhaust gas is used to predry the carbon in filter elements about to be regenerated by passing the gas through the elements. This also removes particulate contaminants from the exhaust gas which is thereafter finish scrubbed by passing it through the incoming water prior. A preferred high temperature activated carbon filter backwashing method employing heat from the exhaust gas is also described.
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Cintins Ivars
Hart Charles N.
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