퇴비를 이용한 구덩이 매몰 처리 시 돼지 사체의 부패 특성

Abstract

Carcasses of pigs were trench buried using either general soil or mature compost as a cover material and themalodorous substances discharged were observed about a year. With the soil burial method, the speed of decaywas shown to be dominantly affected by the ambient air temperature. However the compost burial method’sdecaying process took place quickly, even ambient air temperature was dropped; it holds the temperature of 40oCor higher. With the compost burial method, there was a period where, the temperature inside the pig carcassesand the temperature of cover-material layer were strongly reversed. From this discovery, level of decay processcould be speculated. With the soil burial method there was a trend when malodorous substances concentrationwas high, the level of concentration in the cover soil was also tends to be high. However, the compost burialmethod had different result. When malodorous substances concentration was high the level of concentration inthe compost cover layer was observed to be lower. This indicates compost burial method shown to intercept andabsorb malodorous substances. Furthermore, the compost burial method appears to be able to contribute todeactivate the pathogens by quickly decompose the carcasses at a high temperature.