Heat exchanger for aeration tank
AssigneeUnited States Filter Corporation
InventorErnest W. Downs
Life of this patent
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Abstract
The invention relates to a tube bank heat exchanger for use in reducing the temperature of air delivered under pressure to an air diffuser system within a wastewater treatment facility. The tube bank heat exchanger, submerged within the wastewater, is of a configuration which extends the air flow path from the air source to the diffuser system. By such configuration the temperature of the air delivered to the diffuser system is reduced to a temperature of no more than about 140 degrees F.
Claims15
In combination with an aeration system for a wastewater treatment facility consisting of a treatment tank containing a quantity of wastewater having a predetermined depth, a plurality of air diffusers disposed along the bottom of said tank, an air blower and air distribution piping system to deliver air under pressure from said air blower to said air diffusers, the improvement comprising,
- a tube bank heat exchanger in line with said distribution piping system and located within said wastewater, said tube bank heat exchanger comprising a piping system, trough which air from said air blower passes, of a length that exceeds three times said predetermined depth.
A tube bank heat exchanger for use in reducing the temperature of air delivered under pressure to an air diffuser system having plural diffuser assemblies, including porous membranes, disposed in a wastewater treatment facility and submerged a predetermined depth within a tank of wastewater, where the temperature of said air thus delivered is based upon ambient temperature and the heat of compression of the air under pressure, and said combination may cause failure of said membranes,
- characterized in that said tube bank heat exchanger extends between and in communication with the source of said air under pressure and said air diffuser system, said tube bank heat exchanger being submerged within said wastewater and of a configuration which extends the air flow path between said source and said air diffuser system to a sufficient degree to reduce said combination temperature to no more than 140 degrees F.
Dependencies are inferred from the claim text.