Liquid purification or separation – With gas-liquid surface contact means – With separator
Patent
1995-09-07
1997-03-11
Upton, Christopher
Liquid purification or separation
With gas-liquid surface contact means
With separator
2101951, 210256, 210261, 2105322, C02F 304, C02F 306
Patent
active
056097549
ABSTRACT:
A secondary sewage treatment system is provided with a treatment vessel disposed within a septic tank. The treatment vessel has a draft tube for aerating and circulating waste liquor through the treatment vessel and through media contained within the treatment vessel. The media has one part that is submerged media and another part that is an unsubmerged trickle media. The operation of the draft tube circulated waste liquor within the treatment vessel through the submerged media and up through the draft tube where it is expelled and trickles down through the trickle media back into the liquor in the lower portion of the treatment vessel.
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Cross, Jr. Harry M.
Upton Christopher
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