Multiple Hydrocyclone을 이용한 초기강우 유출수내 미세입자 처리 (Multiple Hydrocyclone for Treatment of Micro-Particle in Storm Runoff)

서지정보

· 발행기관 : 한국도시환경학회
· 수록지 정보 : 한국도시환경학회지 / 12권 / 1호 / 31 ~ 36페이지
· 저자명 : 이준호, 방기웅

초록

Hydrocyclone은 높은 수면적부하율 운전이 가능하고, 구동부분이 없고, 운전 및 유지관리비가 적게 소요되어 미세입자물질 제거에 효과적인 장치로 다양한 산업 분야에서 활용되고 있다. Hydrocyclone에 나선형 유입부를 통해 직각으로 유입되어 중력이 아닌 원심력에 의해 입자물질이 하부배출구로 분리되고 처리수는 vortex finder를 통해 배출된다. 강우 시 발생하는 고농도 초기강우 유출수내 미세입자 처리를 위해 병렬 또는 처리효율 향상을 위해 직렬로 배열한 Multiple Hydrocyclone에 63 ~ 200 μm 입경의 실리카 입자를 이용하여 유입수 SS 농도, 수면적부하율, 하부배출 유량비 변화에 따른 처리특성을 분석하였다. 강우 시 유출수내 미세입자들은 실리카 인공입자들을 이용하여 강우 유출수내 입자농도를 모의 실험하였다. 내경 120 mm, 높이 550 mm의 실험실 규모의Multiple Hydrocyclone을 아크릴을 이용하여 제작하였다. 수면적부하율을 병렬 Multiple Hydrocyclone은 456.2 ~3,015.6 m^3/m^2/day,직렬은 2,152.4 ~ 7,689.2 m^3/m^2/day로 운전하였다. 병렬식 Multiple Hydrocyclone의 SS제거효율범위는 80 ~ 91%이고, 직렬식의 경우 90 ~ 96%로 분석되어 동일한 수면적부하율에서도 처리효율은 직렬식 Multiple Hydrocyclone이 약 10% 높은 것으로 분석되었다.

영어초록

Hydrocyclone is widely used in industry, because of its simplicity in design, high capacity, low maintenance and operational cost. The separation action of a hydrocyclone treating particulate slurry is a consequence of the swirling flow that produces a centrifugal force on the fluid and suspended particles. In spite of hydrocyclone have many advantage,the application for treatment of urban stormwater case study were rare. We conducted a laboratory scale study on treatable potential of micro particles using Multiple Hydrocyclone. Since it was not easy to use actual storm water in the scaleddown hydraulic model investigations, it was necessary to reproduce ranges of particles sizes with synthetic materials. The synthesized storm runoff was made with water and addition of 63 ~ 200 μm silca particles. Experimental studies have been carried out about the particle separation performance of Multiple Hydrocyclone in series and in parallel system.
Multiple Hydrocyclone was made of acryl resin with 120 mm of diameter hydrocyclone and overall height of 550 mm.
To determine the removal efficiency for various influent concentrations of suspended solids (SS) test was performed with different operational conditions. The operated range of surface loading rate was 456.2 ~ 3,015.6 m^3/m^2/day in parallel system and 2,152.4 ~ 7,689.2 m^3/m^2/day Multiple Hydrocyclone in series. The SS removal efficiency range were 80 ~ 91%for in parellel, and 90 ~ 96% for in series system. It was found that particle removal efficiency for the Multiple Hydrocyclone in series system is better than in parallel system under same surface loading rate. Results showed that SS removal efficiency with the in series system improved by about 10% compared within parallel system.

참고자료

· 없음