Liquid purification or separation – Processes – Treatment by living organism
Patent
1990-10-23
1993-03-30
Hart, Charles
Liquid purification or separation
Processes
Treatment by living organism
210767, 210806, 210170, 210238, 210441, 210449, 210485, C02C 300
Patent
active
051981130
ABSTRACT:
A filtering arrangement is provided for effluent from a septic tank prior to passage to a drain field or other disposal. The filtering arrangement makes use of an open-top, U-shaped filter means into which the septic effluent is conducted from the top, preferably through a T-fitting providing an open-topped channel leading into the U-shaped filter. The filter is preferably formed of an outer perforated casing and an inner lining of an open-cell-type polymeric material which effects the filtering of the effluent. The U-shaped filter is preferably suspended from the T-fitting. The arrangement provides fail-safe filtering automatically adjustable for varying flow rates and conditions of the filter. The polymeric filter medium is changed periodically to maintain efficiency.
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