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Necessity of Strengthening Small-Scale Wastewater Discharge Facilities Management

소규모 폐수배출시설 관리 강화의 필요성

  • Park, Jae Hong (Watershed and Total Load Management Research Division, National Institute of Environmental Research) ;
  • Rhew, Doug Hee (Water Quality Assessment Research Division, National Institute of Environmental Research)
  • 박재홍 (국립환경과학원 유역총량연구과) ;
  • 류덕희 (국립환경과학원 물환경평가연구과)
  • Received : 2017.08.16
  • Accepted : 2017.11.28
  • Published : 2018.03.30

Abstract

Small-scale wastewater discharge facilities account for 98% of all workplaces, but in the generation and emission of major pollutants, they account for 27.5 % and 23.5 %, respectively. Since the proportion of the emission load of the small-scale workplace is not large, the national environmental policy has been established mainly around large-scale wastewater discharge facilities. However, in the case of specific hazardous substances in water, the amount of the discharge load of the small-scale wastewater discharge facility was 2.4 times higher than that of the generation load. Certain types of specific hazardous substances in water, which have a higher discharge load than large-scale wastewater discharge facilities, account for 24 ~ 32 %. There are also cases in which the discharge load from a small-scale discharge facility is more than four times higher, depending on the specific kind of water pollutant. As a result of inspections, the violation rate of the small-scale wastewater discharge facility among the total violations by facilities is 93.9 ~ 97.5 %. As a result, the ecotoxicity value of small-scale wastewater discharge facilities was high in most industries, and there was a fluctuation in the measured value. This indicates that the ecological integrity of the water system can be largely influenced by small-scale wastewater discharge facilities. Therefore, it is necessary to expand the environmental management of small-scale wastewater discharge facilities, and in some cases, the effect of the improvement in quality may be more significant than in the management of large-scale wastewater discharge facilities.

Keywords

Acknowledgement

Supported by : 국립환경과학원

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