Development of Organic Compound Fertilizer Based on Treated Human Waste

분뇨잔사(糞尿殘渣)를 이용(利用)한 유기종합비료(有機綜合肥料) 개발(開發)

An organic compound fertilizer was manufactured using wet oxidation human waste as principal source of phosphorus and organic matter. The waste was treated with sulfuric and glutamic acids to increase the available and water-soluble $P_2O_5$ contents. The treatment of 0.1 N sulfuric acid with 24 hours curing was best way in recovering the maximum percentage of $P_2O_5$ originally in the waste. The particle size distribution of trial product varied considerably in the amount of glutamic acid used for granulation. The number of relatively large fertilizer particles was increased as the amount of glutamic acid was increased. The granule crushing strength was generally high in large granules in which 12.5 weight percent of glutamic acid were used for granulation. The trial product showed high moisture absorption due to its porous structure and chemical makeup.

습식(濕式) 분뇨잔사중(糞尿殘渣中)의 인산(燐酸) 및 유기물(有機物)을 주축(主軸)으로하여 유기종합비료(有機綜合肥料)를 제조(製造)하였다. 분뇨잔사중(糞尿殘渣中)의 인산(燐酸) 가용율(可溶率)을 증가(增加)시키기 위하여 황산 및 당밀폐액을 처리(處理)하여 후숙시켰으며 황산 0.1N처리후(處理後) 24시간(時間) 후숙시킨 것이 인산(燐酸)의 가용율(可溶率)이 가장 높았다. 시제품(試製品)의 입도분포(粒度分布)는 접착제(接着劑)로 첨가(添加)된 당밀폐액양(量)에 따라 차이(差異)가 있었으며 양(量)이 증가(增加)될수록 입도(粒度)가 증가(增加)되었다. 시제품(試製品)의 입도(粒度)가 클수록 경도(硬度)는 증가(增加)되었으며 접착제(接着劑)로 처가(添加)된 당밀페액양(量)이 12.5%일 때 입자(粒子)의 경도(硬度)가 가장 높게 나타났다. 시제품(試製品)의 흡습도(吸濕度)는 요소(尿素)에 비(比)하여 대단(大端)히 높았으며 이는 시제품(試製品)의 물리(物理) 화학적(化學的) 특성(特性)에 기인(起因)되었다.