Marine sewage disposal

Patent · Tue Mar 03 04:00:00 EST 1981

OSTI ID:6195756

Sullivan, D W

An activated sludge marine sewage disposal apparatus is described that includes an aeration chamber immediately adjacent to a flooded settling tank, rising above a disinfectant chamber and a holding chamber disposed around the lower part of the tank. Flow from the aeration chamber to the settling tank is through a port in the common wall between the aeration chamber and settling tank, and up inside a pond separated from the rest of the tank by a downwardly flaring baffle of skirt depending from the top of the tank. A single shimmer at the center of the area at the top of the pond picks up floating solids and returns them to the top of the aeration chamber. A vent disposed directly over the shimmer continuously draws off air and gas to the aeration chamber. A sludge return line picks up heavy solids for the bottom of the tank and returns them to the top of the aeration chamber through a riser located in the aeration chamber. Liquid in the settling tank flows out through a submerged perforated pipe into a standpipe in the aeration chamber, with is located centrally in the aeration chamber, and overflows through an inverted U tube, vented to the aeration chamber, the tube connecting to a downcomer sending the liquid back through the common wall to the disinfectant compartment. When sufficient volume of fluid accumulates in the disinfectant compartment, it overflows into a holding tank, from which it emerges via a port.

• Assignee: Red Fox Industries Inc
• Patent Number(s): US 4253957
• OSTI ID: 6195756
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420900* -- Engineering-- Waste Processing Plants & Equipment-- (-1989)
CHEMICAL REACTIONS
CHLORINATION
DESIGN
HALOGENATION
INDUSTRIAL PLANTS
MANAGEMENT
MARINE DISPOSAL
SEWAGE
WASTE DISPOSAL
WASTE MANAGEMENT
WASTE PROCESSING PLANTS
WASTES