TECHNOLOGY FOCUS - BIOLOGY - Preferred Component: The type of floating aquatic plants includes at least one of water hyacinths, duckweeds, pennywort, and water ferns.    TECHNOLOGY FOCUS - ENVIRONMENT - Preferred Method: The floating aquatic plant treatment comprises assimilating macronutrients, micronutrients, and metals into floating aquatic plant biomass; attaching microbial growth on roots of the floating aquatic plants; adsorbing metals and suspended solids by the floating aquatic plants; and entrapping the suspended solids in a root zone of the floating aquatic plants. It takes place during the growing season of the type of floating aquatic plants being utilized. The method further includes collecting biogas evolving from anaerobic digestion in the first zone to be used for a first useful purpose; utilizing the floating aquatic plant biomass harvested from the second zone for a second useful purpose; conditioning batches of the once treated effluent in the second zone prior to treatment by floating aquatic plants; polishing the twice treated effluent prior to discharging; temporarily storing the once treated effluent in at least one of the first zone and the second zone prior to receiving floating aquatic plant treatment; and retaining a portion of the twice treated effluent in the second zone for the purpose of diluting a subsequent batch of once treated effluent. The first useful purpose includes at least one of use as a source of energy via combustion of the biogas, use as a source of heat via combustion of the biogas, and use as a source of electricity via combustion of the biogas. The second useful purpose includes at least one of use as a source of biogas via anaerobic digestion of the floating aquatic plant biomass in the first zone, use as a source of biogas via anaerobic digestion of the floating aquatic plant biomass, use as an animal feed, use as compost, use as a green manure, use as a fertilizer, and use as an energy source via incineration of the floating aquatic plant biomass. The conditioning step includes at least one of adding chemicals to adjust the pH, adding chemicals to adjust alkalinity, adding chemicals to control algal growth, adding chemicals to control disease-transmitting vectors, adding chemicals to control insects, adding water for the purpose of dilution, adding water to reduce the salinity, adding macronutrients, and adding micronutrients. The polishing step includes at least one of volatilizing ammonium nitrogen, adding chemicals to adjust the pH, precipitating the suspended solids via chemical precipitation, and precipitating phosphorus via chemical precipitation. The discharging of the twice treated effluent from the second zone is to at least one of a reuse, a granular media filter, an animal confinement facility, spray fields, a wetland, and the environment.    TECHNOLOGY FOCUS - POLYMERS - Preferred Component: The sheet of material comprises at least one of high density polyethylene, medium density polyethylene, polyethylene, polyvinyl chloride, polypropylene, ethylene propylene diene M-class rubber, and rubber.