Hyperboloid agitator for circulating liquids, and agitating and gassing device

Apparatus for aerating bodies of water

Self-deploying float

Systems and methods for formation of biologically active granules and biologically active granules

Self-deploying float

Apparatus and method for enhanced wastewater treatment

Aeration system

Wind, solar and hybrid wind-solar water circulation and aeration methods and apparatus

Fluid Circulation System

Downflow mixers with gas injection devices and/or baffles

Wine aerator

LIQUID WASTE AERATION SYSTEM AND METHOD

Apparatus and Method for Atomizing a Liquid

Apparatus for mixing gasses and liquids

Bottom soil improving apparatus utilizing characteristics of solar battery, DC motor and expanded paddle vanes

Fluid circulation system

Impeller draft tube, shroud, impeller and aerator

Aerator with intermediate bearing

Turbocharged aerator

Aerator

Air seal enclosure for an aerator

Water resistant aerator system and method

Pivotal rigid vortex shield

Magnetic stirring system for wine aeration and method of using same