Venturi aeration circulation system

A venturi aeration circulation system for aerating and circulating water in a pond with a low interior venturi pressure in a safe, ecologically friendly, convenient and energy efficient manner, the system comprising, in combination:

• an intake pipe positioned essentially horizontally beneath a waterline of a pond adjacent to the bottom of the pond, the intake pipe having an interior section and an exterior section with an exterior rectangle extending upwardly transverse to the intake pipe, the exterior rectangle including a circumferential first perforate section, the intake pipe having an intermediate section with an upwardly extending rectangle extending upwardly parallel with the intake pipe, the intermediate rectangle including a circumferential second perforate section, the perforate sections adapted to receive stagnating un-aerated water from a lower extent of the pond during operation and use;
• a discharge pipe positioned essentially horizontally and about midway between a waterline of a pond and the intake pipe, the discharge pipe being positioned above and laterally offset from the intake pipe, legs supporting the discharge pipe, the discharge pipe having an interior section and an exterior section with an exterior orifice and an intermediate section with a plurality of upwardly facing axially spaced orifices for injecting aerated water into an upper extent of a pond during operation and use, the discharge pipe having an axial length greater than the intake pipe;
• a housing in a rectilinear configuration positioned above ground adjacent to the pond, the housing having a top and a bottom, a front and a back, and first and second sides, an L-shaped pipe section within the housing, the L-shaped pipe having an input end adjacent to the first side and bottom of the housing and an output end adjacent to the second side and top of the housing;
• a lower angled pipe coupling the output end of the intake pipe to the input end of the L-shaped pipe, the intersection of the intake pipe and the lower angled pipe being in a generally S-shaped configuration with the intake pipe having a greater diameter than the lower angled pipe, an upper angled pipe coupling the input end of the discharge pipe to the output end of the L-shaped pipe, the intersection of the discharge pipe and the upper angled pipe featuring the intake pipe extending into, and having a lesser diameter than, the lower angled pipe;
• a pump in the housing operatively associated with the L-shaped pipe adjacent to the input end of the L-shaped pipe for moving water from the perforate sections of the intake pipe to the orifices of the discharge pipe;
• and
• a venturi assembly in the L-shaped pipe adjacent to the output end of the L-shaped pipe for injecting air into water flowing to and through and out of the discharge pipe into the pond, the venturi including a tubularly shaped, upwardly extending, air opening, a primary nozzle upstream of the air opening to reduce the interior diameter of the L-shaped pipe at the air opening and a secondary nozzle downstream of the air opening to increase the interior diameter of the L-shaped pipe at the air opening whereby pond water will be circulated when the pump is operating and the circulating water will be aerated through the operation of the venturi assembly.