Case Study on Appropriate Cyclical Use of Organic Waste in Higashi-Mikawa

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  • Okayama Tomoko
    Department of Human Life and Environment Studies, Faculty of Human Studies, Taisho University

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  • 東三河地域における有機性廃棄物の適正な循環利用に関する事例研究
  • ヒガシミカワ チイキ ニ オケル ユウキセイ ハイキブツ ノ テキセイ ナ ジュンカン リヨウ ニ カンスル ジレイ ケンキュウ

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Abstract

In 2012, an amount of 12000 ton of sewage sludge from Aichi and other prefectures, along with organic residues from a number of food industries, were composted by an industrial waste treatment company called T. The resulting product was 6500 ton of fertilizer, which was derived from the sludge and then brought to agricultural areas in Tahara City. Neighboring farmers began to raise complaints to the local authorities in Tahara due to the bad odors. The case was investigated from the aspect of regulatory compliance. Although there were no violations found with regard to the treatment of industrial wastes like sewage sludge, there does remain a doubt as to whether this recycling of sewage sludge can be acknowledged as a genuine cyclical-use of resources. This paper reports the factual details of this particular case and discusses further possibilities for appropriate treatment of organic waste in general.

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