• Title/Summary/Keyword: 고농도폐수

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Biological treatment process for Food wastewater Using ER-1 bioreactor (다단 수직형 호기성반응기(ER-1)를 이용한 음식물 폐수의 생물학적 처리기술)

  • Lee, Jae-ki;Choi, Hong-Bok;Shin, Eung-Bai;Park, Ju-Hyoung;Choi, Eun-Ju;Kim, Jung-Rae;Park, Young-Sook
    • Journal of the Korea Organic Resources Recycling Association
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    • v.14 no.4
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    • pp.113-120
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    • 2006

  • Wastewater generated through the food waste recycling process have known high concentration, BOD 20,000~150,000 mg/L, which has to treat to the proper level because of a ban on reclamation. But it is impossible to treat less than 10 days by existing water treatment plant. Ecodays Ltd. is to treat this wastewater during 2~4 days by ER-1, which can simultaneously induce the modified PFR(Plug Flow Reactor) of the oxygen transfer rate, MLVSS concentration, and influent concentration to top from bottom of reactor. We tested the pilot test about low concentration food wastewater(BOD 16,500 mg/L) and high concentration food wastewater(64,431 mg/L) at the food waste recycling plant of H-Gun(20t/d). Hydraulic retention time(HRT) of ER-1 for low concentration food wastewater is 2.5day. In low concentration conditions, ER-1 treatment efficiency is to appear BOD 99%, COD 98%, TN 97%, and TP 96%. While ER-1 process for high concentration food wastewater treatment is composed 2 stages, which are to be HRT 2.5day for law wastewater and HRT 1.5 day for secondary treatment. In high concentration conditions, ER-1 treatment efficiency is to appear BOD 97%, COD 84%, TN 66%, and TP 95%. It is treated without temperature control about high temperature($50^{\circ}C$) to appear low treatment efficiency in high concentration conditions.

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초임계수 산화(Supercritical Water Oxidation)를 이용한 고농도 난분해성 폐수 처리 기술

  • 한승호;한주희;노민정;정창모;신영호
    • Environmental engineer
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    • s.177
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    • pp.62-68
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    • 2001

  • 한화석유화학(주) 중앙연구소는 1994년부터 고농도 난분해성 및 독성폐수 처리에 99.9$\%$ 이상의 탁월한 COD 처리효과를 나타내는 초임계수 산화 기술을 순수 국내 기술로 개발하는 연구를 추진하여 왔다. 한화종합화학(주) 중앙연구소에서는 서강대학교와 한국화학연구소가 보유한 실험실 단계의 초임계 유체 기술과 SCWO 기술을 공동 연구를 통하여 5년 동안 자체적으로 기술 개발을 진행하였고, 제0585호 국산신기술인증(KT)을 받았으

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