earticle

영어

According to the high concentration of wastewater and various wastewater characteristics due to advanced industrialization, the operation of a sewage treatment plant is also increasingly requiring technology. In particular, the characteristics of wastewater are increasing according to the inflow of salt and the concentration load and salt inflow occurring during the processing of fishery products. Accordingly, the activated sludge method and the Media method were compared for comparison of treatment efficiency and comparative evaluation of stable treated water. Also, it was studied for the optimization value among the process factors. In the case of fishery products washing water, when measuring raw water, BOD 717 mg/L, COD 261 mg/L, SS 470 mg/L, T-N 102.4 mg/L, and T-P 17.478 mg/L were measured. In the case of 4stage-BNR, the treated water quality for salt inflow was BOD 97.7%, SS 96.5%, T-N 53.5%, 85.0% and Media method BOD 97.8%, SS 98.2%, T-N 62.7%, and 89.4%. The improved treatment efficiency of the advanced treatment method Media was found to be more excellent, and the treatment efficiency according to the process factor change was additionally analyzed. The removal efficiency according to HRT change was highest at 9hr for T-N and 8hr for T-P. The removal efficiency according to the change in MLSS was highest at 69.7% of T-N and 94.0% of T-P in the MLSS 4,000~6,000mg/L section. The treatment efficiency according to the F/M ratio was highest at 0.075~0.08. Treatment efficiency according to SRT showed the highest treatment efficiency at T-N 9 days and T-P 8 days.

한국어

고도 산업화로 인해 고농도 하폐수 및 다양한 성상의 폐수가 유입되고 있는 실정이다. 특히, 수산물 가공 공정에서 나오는 유입수의 농도부하 및 염분유입에 따른 하폐수 처리 시설 본 공정의 충격부하로 인해 고도의 기술과 운영자의 전문성을 요하 고 있다. 이런 환경에 적합하다고 알려진 4stage-BNR공법과 Media process의 처리효율을 비교하였으며, 안정적인 처리수를 얻기 위해서 공정인자의 최적화 연구를 진행하였다. 수산물 가공공정에서 발생하는 세척수의 원수를 측정 시, 평균 BOD 717 mg/L, COD 261 mg/L, SS 470 mg/L, T-N 102.4 mg/L, T-P 17.478 mg/L로 측정되었다. 염분유입에 대한 처리수질은 4stage-BNR은 BOD 97.7%, SS 96.5%, T-N 53.5%, 85.0%와 Media process는 BOD 97.8%, SS 98.2%, T-N 62.7%, 89.4% 로 나타났다. 개선된 고도처리 공법인 Media process의 처리 효율이 더 우수한 것으로 나타났으며, 공정인자 변화에 따른 처 리효율을 추가적으로 분석하였다. HRT 변화에 따른 제거 효율은 T-N은 9 hr, T-P는 8 hr에서 가장 높았다. MLSS 변화에 따 른 제거효율은 MLSS 4,000~6,000 mg/L 구간에서 T-N 69.7%, T-P 94.0%로 가장 높았다. F/M비에 따른 처리효율은 0.075~0.08에서 가장 높았다. SRT에 따른 처리효율은 T-N 9day, T-P 8day에서 가장 높은 처리 효율을 보였다.