Takashi SAKAMAKI
Examination of Fertilizer Effect and Safety at Phosphate Fertilizer Made from Incinerator Ash of Sewage Sludge with Komatsuna
Toshiya KOMATSU, Shuji HIMENO
Phosphorus is valuable exhaustion resources. Using incinerator ash of sewage sludge as substitute of phosphate rock is important process for creating the Recycling-Based Society.
In this study, we understood the influence that slag fertilizer exerted on komatsuna grown in field made by us and this field's soils, and examined whether slag fertilizer was able to be applied in a real environment. The result of content test on komatsuna confirmed safety because the heavy metals were below the Food Sanitation Law allowance caps. It was able to be understood to fill environmental quality standards for soil even if it keeps manuring it for 126 years from the amount of the use manure of this research, and to confirm safety even with T-Cr from which a lot of accumulation is confirmed though accumulation was different according to the element though accumulation in a real soil was feared as for a slaggy fertilizer because the heavy metal is contained.
It was suggested a slaggy fertilizer be to apply from the above-mentioned even in a real environment.
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