人工ゼオライトによる農地の改善とエアレーションによる池水の貧酸素改善に関する研究

With the high facilities of soil amelioration, as water-holding and cation exchange capacity, the Artificial Zeolite（AZ）with the zeolitic material synthesized, byproducts material mainly gained from coal fly ash of electric-power plants, has improved the increased yields of marsh grass, watermelon and soybean, and reducing their replant failures in some high technology-farmers, upland fields in the Tohaku National Irrigation Project in Tottori Prefecture, where many advanced technologies as micro irrigations systems have improved water efficiencies with AZ. We investigated another AZ for its sediment remediation effect in enclosed water area as rainwater storage pond water, and it improved the amelioration in anoxic and high COD conditions, by coagulation and clarification, with stirring the water by submerged pumps by natural energy. And, in small scale, the comparison of the different kind sizes of fine bubbles, so called as, milli・meter scale bubbles from an “air-stone” of porous plastics and micro・meter one from its generator, showed that the more finer bubbles showed the longer sustention time of higher DO value in test tank and pond water, as it showed clouded color and adhered to many goods in water tank.