음식물류 폐기물 석회처리비료 공정에서 초기온도와 석회주입량의 영향

Abstract

The purpose of this study is to optimize lime stabilization system for lime treated fertilizer of food waste. Response surface methodology (RSM) is used to get a set of designed experiments to obtain optimal multi factor operating conditions for the lime stabilization process. Response Surface Methodology explores the relationships between several explanatory variables and one or more response variables. It is a collection of mathematical and statistical techniques for empirical model building. The main objective is to optimize a response(operating temperature, pH and Salinity of lime fertilizer) which is influenced by independent variables(lime application rates and initial temperature of food waste). Lime application rates were 8 ∼ 18 % and initial temperature of food waste were 10 ∼ 28 ℃, respectively. To obtain the operating temperature above 100 ℃ and pH of lime fertilizer above 11.5 and Salinity bellow 1 %, the operation conditions of lime application rates was 11.0 % and initial temperature of food waste was 22.0 ℃, respectively.