유기물자원화 (Journal of the Korea Organic Resources Recycling Association)

  • 제21권1호
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  • Pages.85-93
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  • 2013
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  • 1225-6498(pISSN)
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  • 2508-3015(eISSN)
유기성자원학회 (Korea Organic Resources Recycling Association)
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가정에서 발생한 서로 다른 종류의 음식물 쓰레기가 줄지렁이(Eisenia fetida)개체군의 섭식 및 생장에 미치는 영향

The Effects of different food-wastes of household on the feeding rate and growth rate of Eisenia fetida(Annelida: Oligochaeta) population

  • 박광일 (대진대학교 생명과학과) ;
  • 배윤환 (대진대학교 생명과학과)
  • 발행 : 2013.03.30
⟨ 이전 논문 다음 논문 ⟩

초록

국내의 4인 가족 가정의 음식물 쓰레기 발생량을 염분이 가미된 것과 염분이 가미되지 않은 것으로 구분하여 조사하였고, 음식물 쓰레기를 염분이 가미되지 않은 채소류, 곡류, 과일류, 염분이 가미된 음식물 쓰레기로 구분하여 줄지렁이에게 공급하면서 지렁이의 섭식량 및 증식률을 조사하였다. 음식물 쓰레기량은 1가정 1주당 3,200 g(1인당 1일 0.114 kg)이었고, 그 중 염분이 가미되지 않은 것은 전체의 53.9%인 1,723.8 g 으로 나타났다. 함수율 70%를 가정하였을 때 채소류, 곡류, 과일류의 염도는 각각 0.60, 036, 0.33%이었고, 염분이 가미된 음식물 쓰레기의 염도는 0.78%이었다. 채소류, 과일류에서는 지렁이의 섭식은 잘 이루어졌으나 증체율이 낮았고, 곡류에서는 상대적으로 섭식량은 낮았지만 증체율이 높았다. 함수율 70%인 먹이의 염도가 0.6% 이상인 경우에는 지렁이의 섭식과 생장이 현저하게 둔화하였고, 0.3%인 경우에는 섭식은 정상적으로 이루어졌으나 생장이 약간 저해되었다. 따라서 염분이 가미된 음식물 쓰레기는 전처리과정 없이는 지렁이 처리가 불가능하며, 염분이 가미되지 않은 음식물 쓰레기는 지렁이 처리가 용이한 것으로 나타났다.

The amount of salted food waste and non-salted food waste from household consisted of 4 family members was surveyed. And the feeding rate and growth rate of Eisenia fetida population upon the different food wastes such as vegetables, grains, fruits and salted food waste were investigated. Total amount of food waste from a household was 3,200g/week. i.e. 0.114kg/day/capita and non-salted food waste was 53.9% of food waste. Salt contents of vegetables, grains, fruits were 0.60, 0.36 and 0.33%, respectively, if they were assumed to have 70% water content. Salt content of salted food waste was 0.78%. Upon the non-salted vegetables and fruits, feeding rate of earthworm was high but growth rate was low. Upon the non-salted grains, feeding rate of earthworm was low but growth rate was high. Upon the food with 70% water content, earthworm could not feed and grow when salt content of food was over 0.6%, and earthworm could feed normally but showed low growth rate when salt content of food was 0.3%. These results indicated that earthworm could stabilize the non-salted food wastes with ease but could hardly stabilize the salted food wastes.

키워드

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