Characteristic of rural sewerage sludge and its utilization as fertilizer
2004
Sodegaki, K.(Gifu-ken. Research Inst. for Agricultural Sciences (Japan)) | Asano, Y. | Yano, H.
Dry rural sewerage sludge has a similarity of the nitrogen mineralization to the chicken manure. It is available as a nitrogen fertilizer if (or as) the mineralization rate of the included nitrogen is expected from 30 to 50 percent. However, the sludge contains higher concentration of copper and zinc than a common chemical fertilizer. The use as fertilizer in the same farmland with much volume or annually requires many cautions. In addition, it contains cadmium and lead, too. But there was no problem about the farmland contamination as both content ratio per nitrogen was comparatively low in this study.
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