Studies on a characteristic of the sewage sludge compost with garbage
2009
Yamasaki, S.(Yamanashi-ken. Agricultural Technology Center, Kai (Japan)) | Nagasaka, K. | Kato, T. | Mochizuki, K. | Hanagata, T.
We examined a characteristic and usage of a new compost produced in Yamanashi from sewage sludge and dry garbage (SSCG). In SSCG the seasonal variation of the ingredient was slight, and the quality was stable. It is characteristic that the lime content is very high in SSCG. This is because of the large quantity of flocculant used for raw materials. When it is used at a rate of 500 kg/10 a, SSCG can supply about 3 kg/10 a of inorganic state nitrogen. When we use SSCG repeatedly, lime accumulates the surplus in the soil. Therefore, it is necessary for us to avoid using SSCG in combination with other lime material.
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