Patent ID: 7384777

Claim:
A microbiological culture for triggering microbiological processes in artificial bodies of water, the microbiological culture comprising: a bacteria mixture immobilized on a matrix, wherein the bacteria mixture comprises: a) ammonia-oxidizing bacteria; b) nitrite-oxidizing bacteria; and, optionally c) nitrate-reducing and nitrite-reducing bacteria; wherein the matrix is selected from at least one polymer material selected from the group consisting of polymeric polysaccharides, proteins, ethyl cellulose, methylcellulose, carboxy methyl ethyl cellulose, cellulose acetate, alkali cellulose sulfate, polyanilline, polypyrrole, polyvinyl pyrrolidone, polystyrene, polyvinyl chloride, polyvinyl alcohol, polyethylene, polypropylene, copolymers of polystyrene and maleic acid anhydride, epoxy resins, polyethylene imines, copolymers of styrene and methyl methacrylate, polystyrene sulfonate, copolymers of polyacrylate and polymethacrylate, polycarbonate, polyester, silicones, methylcellulose, mixtures of gelatin and water glass, mixtures of gelatin and polyphosphate, mixtures of cellulose acetate and phthalate, mixtures of gelatin and copolymers of maleic acid anhydride and methyl vinyl ether, cellulose acetate butyrate, chitosan, poly dialkyl dimethyl ammonium chlorides, mixtures of polyacrylic acids and poly diallyl dimethyl ammonium chlorides, and suitable mixtures of the above; wherein the ratio of cell numbers of ammonia-oxidizing bacteria to nitrite-oxidizing bacteria is in the range of 1:10,000 to 1:1; and wherein the ratio of nitrite-oxidizing bacteria to nitrate-reducing and nitrite-reducing bacteria is in the range of 1,000:1 to 1:1.