사료화 및 퇴비화 공정 유래 음폐수의 성상 비교 연구

Abstract

ABSTRACT This study was conducted to characterize food waste leachate (FWL) and to compare its characteristics according to generation source: feed supplement- and compost-producing facilities. FWL contained high levels of organic compounds such as carbohydrate, protein and lipid. The moisture content of FWL was among the range of conventional wet anaerobic digestion. FWL was acidic (pH of 4.0±0.3) and showed high coefficients of variance for specific parameters: carbohydrate, protein, lipid, ethanol, acetic acid and propionic acid. FWL derived from feed supplement-producing facilities showed slightly lower concentrations of most parameters than FWL derived from compost-producers. However, the difference was not significant at 5% significance level according to analysis of variance.Keywords : food waste leachate, anaerobic digestion, characterization, analysis of variance 초 록 본 연구에서는 수도권매립지 반입 음폐수에 대한 성상분석을 통하여 음폐수의 일반적인 특성을 살펴보고, 음폐수 유래 공정(사료화, 퇴비화)에 따른 음폐수 성상 특징을 비교하였다. 음폐수는 고농도의 유기물을 함유한 폐수이며 습식 혐기소화가 가능한 범위의 함수율을 나타내었다. 음폐수는 산성을 띠며 비교적 높은 세부 성상(탄수화물, 단백질, 지방, 에탄올, 아세트산, 프로피온산 등)의 변화율을 나타냈다.