A wall-mounted, retrievable diffusor system for aerating water in a tank includes a guide rail assembly mounted to a tank wall and extending from the tank floor to an upper edge of the wall; a retrievable mounting frame assembly releasably mounted on the guide rail assembly; and a plurality of aeration elements secured to the retrievable mounting frame assembly. The retrievable diffusor system is configured to be raised or lowered into or out of the tank either manually or via a motorized winch. In one aspect, the diffusor system includes guide rollers for guiding the mounting frame along a central guide rail. Swivel rollers engage the central guide rail and enable the mounting frame to be pivoted out of a position perpendicular to the tank wall and into a position over a platform of the tank for maintenance or replacement of the aeration elements when the frame is pulled from the tank.

Liquid effluent treatment module comprising at least one tank portion suitable for receiving a plurality of packing elements that may receive a biological material, the tank portion defining a horizontal longitudinal axis and comprising at least one effluent feed, characterized in that the tank portion further comprises: at least one line for collecting treated effluent arranged in a central part of the tank portion and parallel to the horizontal longitudinal axis, at least one air injection line arranged in a lower part of the tank portion, off-centered and parallel to the line for collecting treated effluent so as to give rise to a spiral movement of the liquid effluents.

Liquid effluent treatment module comprising at least one tank portion suitable for receiving a plurality of packing elements that may receive a biological material, the tank portion defining a horizontal longitudinal axis and comprising at least one effluent feed, characterized in that the tank portion further comprises: ?at least one line for collecting treated effluent arranged in a central part of the tank portion and parallel to the horizontal longitudinal axis, ?at least one air injection line arranged in a lower part of the tank portion, off-centered and parallel to the line for collecting treated effluent so as to give rise to a spiral movement of the liquid effluents.

A container assembly includes a flexible bag having an interior surface bounding a chamber and an opposing exterior surface. The bag has a bottom end wall that includes a first sparger and a second sparger. The first sparger and the second sparger each have a flexible first sheet overlying a flexible second sheet, the first sheet and the second sheet being secured together so as to form a sparging area bounded between the first sheet and the second sheet, at least a portion of the first sheet overlying the sparging area being gas permeable so that gas can pass from the sparging area, through the first sheet, and into the chamber.

A microbubble generation device comprises a liquid inlet (101), a gas inlet (104), a bubble flow outlet (103), and a gas-liquid mixing chamber (102). An air-permeable hole having an angle structure is provided at a gas-liquid interface of the gas-liquid mixing chamber (102), and a pointed end of the angle structure of the air-permeable hole points to a liquid flow direction. The bubbles generated by the device are extremely small in diameter, prolonging a duration the bubbles stay in the liquid phase, and enhancing gas-liquid mass transfer efficiency.

A container assembly includes a flexible bag having an interior surface bounding a chamber and an opposing exterior surface, the bag having a bottom end wall being comprised of a first sheet overlying a second sheet, the first sheet and the second sheet of the bottom end wall being welded together so as to form a first sparging area and a separated second sparging area that are both bounded between the first sheet and the second sheet, at least a portion of the first sheet overlying the first and second sparging areas being gas permeable.

Embodiments of the present disclosure describe an aquaculture environment control system comprising one or more control apparatuses positioned within a vessel at an angle relative to a proximal vessel wall and configured for scouring of the vessel, wherein each control apparatus has a discharge conduit and each discharge conduit has one or more orifices; and a fluid source in fluid communication with each of the control apparatuses. Embodiments of the present disclosure describe a method of controlling an aquaculture environment comprising supplying one or more of a fluid and gas to a control apparatus positioned within a vessel at an angle relative to a proximal vessel wall; and discharging one or more of the fluid and gas from the control apparatus at a fluid velocity sufficient for scouring of the vessel.

The present invention is a composting bioreactor system that continually receives biodegradable solid wastes, waste waters and exhaust gases, automatically recycles the biodegradable wastes into nutrients and heat energy, and automatically supplies the nutrients and heat into an integrated hydroponic or aquaponic system. This invention together with integrated food growing system may be installed onsite such as balconies, backyards and premises of restaurants and food factories etc. therefore may lead to zero mileage targets both for recycling wastes and for supplying foods. This invention integrates composting process and aquaponic technology together and may establish a closed-loop recirculation of both water and gases therefore upgrades aquaponics into compoponics. A compoponic system has both soil and soilless growing beds and mimics nature recirculating nutrients, carbon and energy among human being, animals, microorganisms and plants by way of photosynthesis, slow burning by cellular respiration and burning by combustion.

The present invention relates to the field of fluid aeration and, in particular, fluid aeration in a tank of the type having a fluid aerator or aerators requiring removal for cleaning and/or maintenance. The aeration tank of the present invention may be a Moving Bed Bioreactor or Moving Bed Biofilm Reactor (MBBR) tank forming part of an MBBR wastewater treatment system, although the aeration tank of the present invention may also have utility in other applications. The invention further relates to an aerating lance assembly for use in an aeration tank.

A system for mixing and mixing processes and structures are disclosed. In addition a nozzle used for mixing is disclosed.