Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1974-09-16
1976-06-29
Hart, Charles N.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210151, 210197, 210 17, C02C 104
Patent
active
039665992
ABSTRACT:
Methods and apparatus are disclosed for treating biodegradable waste products. A liquor of waste products is introduced into a reactor mixing zone comprising a column of fixed media material having a high surface area to volume ratio, a low resistance to liquid flow and a surface condition receptive to aerobic microbial growth. The liquor is circulated in a continuous flow path including the fixed media column. Preferably, a mechanical surface aerator is positioned in the continuous flow path immediately above the mixing zone to aerate the liquor and distribute it uniformly over the top of the fixed media column. The aeration, distribution and circulation of the liquor are accomplished in a manner to promote homogeneous mixing throughout the mixing zone and to encourage aerobic microbial growth on the fixed media while minimizing agitation of a nature tending to dislodge the aerobic microbial growth from the fixed media and develop flocculent aerobic microbes. A sediment receiving zone is provided immediately below an apertured floor of the mixing zone for collection of residual solids. Other method and apparatus features are disclosed.
REFERENCES:
patent: 2355640 (1944-08-01), Fischer et al.
patent: 3235234 (1966-02-01), Beaudoin
patent: 3371033 (1968-02-01), Simmons et al.
patent: 3428177 (1969-02-01), Duff
patent: 3709364 (1973-01-01), Savage
patent: 3722679 (1973-03-01), Logue
patent: R27721 (1973-08-01), Klock
Ecodyne Corporation
Hart Charles N.
Spitzer Robert H.
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