A water aeration system (10) encases an air pump (60) and a solar power controller (62) in an encasement structure (34) with one or more air permeable sidewalls (42; 44). The encasement structure is mounted at or near a top end of a mounting pole (32). A solar panel (50) is mounted directly or indirectly to the encasement or to the mounting pole at or near the top end of the mounting pole, optionally with screens (80, 82, 84, 86) connected to the backside of the solar panel. An air conduit (20) is threaded through a hollow channel in the mounting pole or structure associated therewith, and then underground and/or under water for joining to an immersed diffuser (12). The system is protected from tampering where the air pump and controller are inside the encasement structure, the solar panel and encasement structure are mounted several feet above the ground surface, the underside of the solar panel is shielded by protective screens, and the conduit between the pump and the diffuser is held inside the mounting pole or structure associated therewith.

The present invention provides modular devices and systems for infusing gas into a liquid and methods of manufacture and use thereof. In accordance with an embodiment, a modular device for infusing gas into a liquid is provided. The modular device comprises a plurality of microporous hollow fibers, and a cap covering open ends of the microporous hollow fibers. The cap is configured to receive a gas into an opening and to deliver the gas into the open ends of the microporous hollow fibers. The cap is further configured to removably mount the modular device to a fixture. A system for infusing gas into a liquid may include one or more of the modular gas infusion devices configured to be removably mounted to a fixture such that the microporous hollow fibers are within a hollow cavity. The hollow cavity includes a first opening configured to receive a liquid and a second opening configured to discharge the liquid infused with a gas. Because the system is modular, it is economical to manufacture, scale to different application requirements and to maintain.

An aerobic composting system and method utilizes circulation of a gas through a mixture of liquid and organic materials to continuously mix the liquid and organic materials while encouraging aerobic organisms which aid with the composting process. The aerobic composting system generally includes a container which is adapted to store a volume of a liquid to be continuously mixed with organic materials to produce compost. The container may include a first opening through which the liquid and/or organic materials are introduced into a cavity of the container. The container may also include a second opening such as a spigot through which the resulting compost is dispensed. A gas dispenser is positioned on the floor of the container within the cavity to continuously dispense a gas through the liquid so as to mix the organic materials with the liquid and to encourage aerobic organisms which aid with the composting process.

A water aeration system (10) encases an air pump (60) and a solar power controller (62) in an encasement structure (34) with one or more air permeable sidewalls (42; 44). The encasement structure is mounted at or near a top end of a mounting pole (32). A solar panel (50) is mounted directly or indirectly to the encasement or to the mounting pole at or near the top end of the mounting pole, optionally with screens (80, 82, 84, 86) connected to the backside of the solar panel. An air conduit (20) is threaded through a hollow channel in the mounting pole or structure associated therewith, and then underground and/or under water for joining to an immersed diffuser (12). The system is protected from tampering where the air pump and controller are inside the encasement structure, the solar panel and encasement structure are mounted several feet above the ground surface, the underside of the solar panel is shielded by protective screens, and the conduit between the pump and the diffuser is held inside the mounting pole or structure associated therewith.

The present invention provides an adjustable pulsed gas agitator including a gas accumulation chamber with a gas discharge pipe, a gas supply unit, and an adjustable gas discharge unit. The adjustable gas discharge unit has an elongatable gas pipe slidably disposed over the lower part of the gas discharge pipe, and a gas cap disposed underneath the elongatable gas pipe; so that when the adjustable gas discharge unit is moved upward or downward, the volume of the stirring gas accumulated within the gas accumulation chamber is decreased or increased; thereby the frequency and strength of the discharged pulsed gas flows is varied.

The present invention provides modular devices and systems for infusing gas into a liquid and methods of manufacture and use thereof. In accordance with an embodiment, a modular device for infusing gas into a liquid is provided. The modular device comprises a plurality of microporous hollow fibers, and a cap covering open ends of the microporous hollow fibers. The cap is configured to receive a gas into an opening and to deliver the gas into the open ends of the microporous hollow fibers. The cap is further configured to removably mount the modular device to a fixture. A system for infusing gas into a liquid may include one or more of the modular gas infusion devices configured to be removably mounted to a fixture such that the microporous hollow fibers are within a hollow cavity. The hollow cavity includes a first opening configured to receive a liquid and a second opening configured to discharge the liquid infused with a gas. Because the system is modular, it is economical to manufacture, scale to different application requirements and to maintain.