earticle

영어

The pharmaceuticals and personal care products (PPCPs) remaining in the sewage tertiary treated water were analyzed and removed by UV-AOP treatment. The oxidizing agent used in the UV-AOP process was hydrogen peroxide. PPCPs analysis was performed using a solid phase extraction method considering the trace concentration after the third treatment. A single wavelength UV lamp of 254 nm and a double wavelength UV lamp of 185 nm and 254 nm were used. The UV irradiation dose was adjusted to the hydraulic retention time of the reactor. The dose range was 701 to 1,683 mJ/cm2 and divided into three levels. The average removal rate showed different tend by dose, and was 59.4 to 77.5% in the 254 nm UV lamp and 61.6 to 76.0% in the 185/254 nm UV lamp. When comparing the average removal rate, the 185/254 nm UV lamp was slightly superior, but there was no significant difference when comparing by each product. By species, 8 species showed a higher removal rate of 254 nm UV lamp and 3 species of 185/254 nm UV lamp, but 5 species showed differences that were discernible with the naked eye. Iohexol, Iopamidol, Iopromide, and Sulfamethoxazole were the most common species that showed removal rates of over 85.0% at high doses. Acesulfame, Benzotriazole, and Naproxen were the three species that showed removal rates of over 60.0%.

한국어

하수 3차 처리수 내 잔존하는 pharmaceuticals and personal care products(PPCPs)를 분석하고 UV-AOP에 의한 제거 여부를 분 석하였다. UV-AOP 공정에 사용된 산화제는 과산화수소였다. 3차 처리 이후의 극미량의 농도를 고려하여 고상추출법을 이용하여 농축하였다. 254 nm 단일 파장이 나오는 램프와 185 nm와 254 nm가 나오는 램프를 이용하였다. UV 조사량은 반응조 체류시간 으로 조정하였으며 3단계로 구분하였다. 조사량의 범위는 701~1,683 mJ/cm2이었다. 평균 제거율은 조사량별로 경향을 보였으며 254 UV nm램프에서 59.4~77.5%, 185/254 nm 램프에서 61.6~76.0%였다. 평균제거율을 비교하면 185/254 nm UV 램프가 약간 우세하였으나 물질별로 비교하면 큰 차이를 보이지는 않았다. 물질별로도 254 nm UV 램프가 우세한 제거율을 보인 종이 8종, 185/254 nm UV 램프는 3종이었으나 육안으로 식별 가능한 차이를 보인 종은 각각 5종이었다. 높은 조사량에서 85.0% 이상의 제 거율을 보인 종은 공통적으로 Iohexol, Iopamidol, Iopromide, Sulfamethoxazole 4종이었으며 그 외 60.0% 이상의 제거율을 보인 종은 Acesulfame, Benzotriazole, Naproxen 3종이었다.