Abstract: Disclosed is an improved, fully automated system for on-site growth and conditioning of microorganisms for use in water body restoration. The system includes a reservoir for the microorganisms and the nutrients, a bioreactor system, a water conditioning system, and an electrical control device.

Abstract: A method and an apparatus for in situ purification by aeration and biofiltration of water from a water body. According to this method, polluted and/or oxygen deficient water is drawn through a conduit into a submerged chamber held adjacent to the surface of the water body. Water is oxygenated from three sources: air injected into the conduit to draw the water into the submerged chamber, air diffusing from the surface of the water body; and air injected in a lower portion of the chamber. The oxygenated water flows downwardly from the chamber through a submerged biofilter having a filter bed made of filtering media which may be preinoculated with beneficial microorganisms and essential nutrients. Rafted or floating vascular plants can be inserted into the chamber to enhance purification by fixing metals.

Abstract: A self-contained aeroponic apparatus comprising a reservoir for containing a nutrient solution and a right-angular plant support standing over the upper edge of the reservoir and defining with it a closed chamber. The panels that form the plant support are releasably secured, along edges thereof that adjoin one another, in essentially watertight and light-tight conditions. Likewise, the lower edges of the support panels are releasably secured to the upper edge of the reservoir in watertight and light-tight conditions. Cups for holding plant structures are formed integrally with the inclined hypotenuse wall of the right-angular support. They are open-ended tapered tubes each of a size to snugly hold a plant structure. A nutrient solution spraying system within the chamber serves to supply the solution to the plant structures in the cups.