Abstract
To learn about the discharge facility management of industrial complexes and the discharge characteristics of water pollutants in drainage, 11 sites were selected, including 16 discharge companies of Hanam Industrial Complex and High-Tech Scientific Industrial Complex and 4 drainages of the industrial complexes. Through the analysis, it was found that 12(75 %) of the 16 discharge companies had specific hazardous substances other than those registered at the time of installation and registration of the wastewater discharge facilities. In terms of other pollutants, 11 of the 16 companies(about 69 %) were found to have pollution items that differed from those included in approved and reported items lists. In addition, Formaldehyde, Mn, Zn, and Ba were discharged from 11 out of the 16 companies. Significantly, one of the specific hazardous water pollutants, Cu, was detected in all discharge facilities at levels from 0.029 to 0.929 mg/L. Even in major complexes drainages and the main stream of the Yeongsangang. As, Dichloromethane, and Chloroform were detected. However, it cannot be conclusively claimed that it is probable that these substances were actually discharged from the above facilities because research was only done in a limited range(Class 1 to Class 3), and therefore, further research is required. In the future, it will be necessary to expand the research scope of the discharge companies in order to establish a database of water pollutants, and to improve permits and reported items based on discharged substances.
산업단지의 배출시설관리와 배수로 수질오염물질의 배출 특성을 파악하기 위하여 하남산업단지와 첨단과학산업단지의 배출업체 16개 업체와 산업단지 배수로 4개를 포함한 11개 지점을 선정하여 조사하였다. 그 결과 배출업체 16개 업체 중 12개(75 %)의 업체에서 폐수배출시설 설치 허가 및 신고 시 등록한 항목이외의 특정수질유해물질이 검출되었고, 기타오염물질은 16개 업체 중 11개(약 69 %)의 업체에서 허가 및 신고 항목과 다른 오염항목이 검출된 것으로 조사되었다. 그리고 Formaldehyde, Mn, Zn, Ba 항목이 16개 업체 중 11개 업체에서 배출되는 것으로 나타났다. 특히, 특정수질유해물질 중 Cu는 0.029 ~ 0.929 mg/L로 모든 배출시설에서 검출 되는 것으로 나타났고, 영산강수계 주요 산단 배수로 및 본류에서도 As, Dichloromethane, Chloroform 등이 검출되었으나, 제한적인 범위(1종 ~ 3종)에서 수행되어 배출업체에서 배출되었다고 개연성을 평가하는 것은 한계가 있기 때문에 보다 많은 연구가 필요할 것으로 보인다. 향후 배출업체의 범위를 확대 조사하여 수질오염물질 DB를 구축하고, 허가 및 신고사항을 배출물질에 맞게 개선하는 것이 필요하다.