초록 ▼

A system is provided for restoring and maintaining a eutrophied natural body of water such as a lake. The system includes an initial treatment or takedown phase to precipitate phosphates, if necessary. A second or final phase includes the utilization of a series of dispensers in the lake water and i

A system is provided for restoring and maintaining a eutrophied natural body of water such as a lake. The system includes an initial treatment or takedown phase to precipitate phosphates, if necessary. A second or final phase includes the utilization of a series of dispensers in the lake water and in the watershed area to continually add measured, slightly less than stoichiometric amounts of secondary phosphate precipitating cations, such as soluble complexes of trivalent cations, to continually inactivate phosphates, with hydroxo complexes, fluoro complexes and complexes of weak organic acids, including amino acids, being preferred.

대표청구항 ▼

A method of restoring and maintaining a eutrophied natural body of water such as a lake by inactivating the phosphorus ions present in the lake and in the watershed area comprising an initial takedown phase, if necessary, and a final takedown and maintenance phase, said initial phase comprising the

A method of restoring and maintaining a eutrophied natural body of water such as a lake by inactivating the phosphorus ions present in the lake and in the watershed area comprising an initial takedown phase, if necessary, and a final takedown and maintenance phase, said initial phase comprising the addition to the lake of about a stoiciometric amount of a primary phosphate precipitant until the phosphate concentration is reduced to about 0.100 mg/l.; followed by said final phase which comprises placing one or more automatic dispensers containing a secondary phosphate precipitant in the anoxic regions of the lake and in the sources of water flow into said lake in the watershed area and adjusting the flow of said secondary precipitant to a level which will reduce the level of said phosphorus ions in said lake to and maintain it at a concentration of about 0.010 mg/l. or less.