活性汚泥処理(ASP)システムは、電気を使用して未処理の未処理の下水に空気を吹き込みます。これにより、固形物が粉砕され、生物学的な「スープ」が開発されます。曝気により、廃棄物中の自然に発生するバクテリアが有機物を消化し、全体的な汚染物質レベルを下げることができます。ASP下水処理場には一次沈殿室がないため、空にする頻度が少なく、不要な臭いも少なくなります。
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.
水中曝気フィルター
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.