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Optimization of Operating Conditions for Each Linked Treatment Scenario using Sewage Treatment Modeling

하수처리 모델링을 이용한 연계처리 시나리오별 운전조건 최적화

  • Kim, Sungji (Department of Civil Engineering, Seoul National University of Science and Technology) ;
  • Gil, Kyungik (Department of Civil Engineering, Seoul National University of Science and Technology)
  • 김성지 (서울과학기술대학교 건설시스템공학과) ;
  • 길경익 (서울과학기술대학교 건설시스템공학과)
  • Received : 2020.12.31
  • Accepted : 2021.01.14
  • Published : 2021.02.28

Abstract

Due to rapid industrial development, population growth, and improvement of living standards, the amount of sewage and wastewater, including nutrients, is increasing every year. In addition to the increasing amount of sewage and wastewater generation, untreated linked treated water (manure, livestock manure, industrial wastewater, leachate, food waste) is also increasing, and many of the linked treated water flows directly into nearby sewage treatment plants. The associated treated water causes many problems because of its own characteristics, low flow rate with high concentration compared to existing inflow sewage. In order to solve this problem, it is necessary to investigate the quantity and quality of the connected treated water whichh is flowed into the sewage treatment plant, and a study the effect on sewage treatment. Therefore, in this paper, we would like to examine the effect of the linked treated water. Seasonal effect associated with water pollution conditions was considered. In addition, a scenario was created through the distribution and inflow of connected treated water along with the water temperature conditions. Through scenario analysis, we intend to optimize the operating conditions of linked processing.

급속한 산업발전과 인구증가, 생활 수준의 향상으로 영양염류를 포함한 하·폐수 발생량이 매년 증가하고 있다. 증가하는 하·폐수 발생량과 더불어 미처리 연계처리수(분뇨, 가축분뇨, 산업폐수, 침출수, 음폐수)또한 발생량이 증가하고 있고, 연계처리수 상당 수가 인근 하수처리장으로 연계하여 연계처리되고 있다. 연계처리수는 기존 유입하수와 비교했을 때 저유량 고농도의 특징을 가지고 있기때문에 하수처리장에서는 방류수 수질 악화, 처리량 증가, 오염부하 증가, 충격부하 또는 중금속 유입 등과 같은 많은 문제점을 가지게 된다. 이와같은 문제를 해결하기 위해서 하수처리장에 연계 유입되는 연계처리수의 양 및 수질 등의 조사가 필요하고, 하수처리에 미치는 영향등에 관한 연구가 필요하다. 따라서 본 논문은 연계처리수의 영향을 살펴보기 위해 4계절에 따른 수온조건을 고려했을 때 연계처리수의 영향 및 연계처리수 유입 유량 분배 등 영향인자를 고려하여 시나리오를 만들고 최적의 효율을 나타내는 조건을 분석하고자 한다.

Keywords

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