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Operating Characteristics of Composting Facility during Composting of Food Waste and Co-composting of Food Waste and Sewage Sludge  

남궁완 (건국대학교 공과대학 환경공학과)
이노섭 (건국대학교 공과대학 환경공학과)
박준석 ((재)자연환경연구소)
인병훈 ((재)자연환경연구소)
허준무 (㈜그린기술산업)
박종안 (순천향대학교 환경보건학과)
Publication Information
Journal of Environmental Health Sciences / v.28, no.5, 2002 , pp. 86-92 More about this Journal
Abstract
This study was performed to assets the operating characteristics of food waste composting and co-composting (food waste + sewage sludge) at a compelling facility. The facility was being operated successfully without being affected by kind of composting feed materials. Partial anaerobic condition was detected during food waste composting and co-com-posting, but these two composting systems were proven to be operated successfully under aerobic condition from the monitoring results of $O_2$, volatile solids reduction rate, temperature, and other parameters. The conductivity and chloride concentrations of compost were gradually increased during two composting periods, but the conductivity and chloride concentrations of co-compelling indicated lower values than those of food waste composting at final point(40 m). As a result, co-composting was turned out to be more desirable than food waste composting, considering salt problem. High correlations ($R^2$= 0.9265 for food waste composting and $R^2$= 0.9685 for co-composting) between CEC and volatile organic matter were found. Quality of composts produced from two composting process satisfied Korean heavy metal standard.
Keywords
Co-composting; Volatile solids reduction rate; Chloride ion concentration; CEC; Conductivity;
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