Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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Experimental Evaluation and Resident's Assessment of Zero Food Waste System in Multi-family Housing Estates

공동주택단지의 음식물쓰레기 제로하우스 시스템 실용화를 위한 현장 시험운영 및 거주자 평가

  • Oh, Jeongik (Advanced Technology Research Team, Land & Housing Institute, Korea Land & Housing Corporation) ;
  • Lee, Hyunjeong (Department of Housing & Interior Design, Kyung Hee University)
  • 오정익 (한국토지주택공사 토지주택연구원 미래기술연구실) ;
  • 이현정 (경희대학교 주거환경학과)
  • Received : 2015.10.26
  • Accepted : 2015.12.22
  • Published : 2015.12.31
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Abstract

This research conducts both experimental evaluation and resident's assessment of zero food waste system (ZFWS) in multifamily housing estates in order to explore the feasibility of ZFWS embedded in fermentation and extinction technology utilizing wood chips turned into fertilizer. Having been established in a multifamily housing estate, ZEFWS was proved to be functional and effective. During the 3-month experimental period, the weight between infused food waste and its reactor was reduced significantly enough, and the chemical analysis showed that the concentration of organic compounds went from 87.9% to 75.8%, $H_2O$ decreased from 69.7% to 45.5%, NaCl rose from 0.2% to 0.5%, pH increased from 4.6 to 7.8, and ATP escalated from 505.3 nmol/L to 723.5 nmol/L. Also, the chemical analysis of the output in the experimentation indicated adequacy of the organic fertilizer. In the self-administered questionnaire survey for residents participating in the field project, almost all the respondents viewed that ZFWS can compete with conventional food waste disposal methods and an idealistic way to upcycling food waste into fertilizer.

음식물쓰레기의 감량과 자원화를 실용화하기 위한 일환으로 수행된 본 연구는 목질바이오칩을 활용하여 발효 소멸 기술을 적용한 음식물쓰레기 제로하우스 시스템(ZFWS)을 공동주택 단지 내에 구축하여 평가하였다. 단지 내 시험장치를 설치하여 운영 제반 전 과정을 모니터링한 현장조사와 그 장치를 이용한 거주자들을 대상으로 한 설문조사를 병행하였다. 현장 조사에서는 투입 음식물쓰레기와 혼합 반응조 혼합물의 성상, 발효 소멸된 최종 부산물의 성상을 분석하였다. 투입 음식물 쓰레기와 혼합 반응조 혼합물은 안정화된 수준의 유기물 함량과 함수율, 낮은 염도, 약칼리성의 수소이온농도, 높은 ATP 농도를 보여 발효 소멸 반응이 원활히 이루어졌음을 보여주었다. 최종 부산물은 비료공정규격의 기준(예, 유기물 함량, 유기물대질소비, 수분, 염분, 각종 중금속 등)에 적합하고, 친환경 퇴비로서 충분히 기능하는 것으로 나타났다. 한편, ZFWS 시범 운영에 참여한 가구들을 대상으로 한 설문조사에서 거주자들 대부분은 ZFWS의 도입에 적극적이었고, 그 운영에 긍정적으로 평가하였다. 따라서, 본 연구결과는 ZFWS이 기존 음식물쓰레기의 처리방식을 개선하고, 공동주택 단지 내 발생하는 음식물 쓰레기의 퇴비화를 실현하는 최적의 모델로서 가능성을 확인하였다.

Keywords

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  1. An Exploration on Food Waste Management of Local Governments vol.38, pp.3, 2016, https://doi.org/10.4491/KSEE.2016.38.3.101
  2. Food Waste Management and Public Dissemination of Zero-Food Waste System in Multifamily Housing Estates vol.38, pp.5, 2016, https://doi.org/10.4491/KSEE.2016.38.5.219
  3. Exploring a zero food waste system for sustainable residential buildings in urban areas vol.23, pp.1, 2017, https://doi.org/10.4491/eer.2017.009
  4. High-Grade Characteristics of Solid Refuse using Food Waste Fermentation Product vol.40, pp.9, 2018, https://doi.org/10.4491/KSEE.2018.40.9.372