활성 슬러지 공정(ASP) 시스템은 전기를 사용하여 미정 하수에 공기를 불어넣습니다. 이것은 생물학적 '수프'를 개발하기 위해 고체를 분쇄합니다. 폭기는 폐기물에서 자연적으로 발생하는 박테리아가 유기물 함량을 소화할 수 있도록 하여 전체 오염 물질 수준을 줄입니다. ASP 하수 처리장에는 1차 침전실이 없어 비우는 빈도가 낮고 원치 않는 냄새가 적습니다.
Once the sewage has been aerated for long enough, excess liquid is discharged into a clarification chamber, where live bacteria settle to the bottom. Dead bacteria rise to the top, leaving clean water in the middle – which can then be discharged safely into either a watercourse, drainage field or soakaway.
수중 폭기 필터
In a submerged aeration filter, a primary settlement chamber holds solid material. This is where anaerobic digestion by bacteria takes place. Clarified water then passes into a second chamber containing a submerged media – and here, the water is treated to remove dissolved constituents by aerobic bacteria, supported by diffused air. This process ensures that full treatment is achieved before the material flows to a final settlement chamber. The final, treated wastewater is discharged to the drainage field, watercourse or soakaway.