The biological treatment of sewage involves passing the primary effluent into large aeration tanks where it is pumped with air and mechanically agitated to allow floc growth. The effluent is then passed into a settlement tank, with the sediment being activated sludge (secondary effluent).
يتم تمرير التدفق الأولي إلى خزانات تهوية كبيرة، حيث يتم ضخه بالهواء وتحريكه ميكانيكيًا للسماح بنمو التكتلات. ثم يتم تمرير التدفق إلى خزان ترسيب، حيث يُطلق على الراسب اسم الحمأة المنشطة وهو التدفق الثانوي.
| Front | Give the process of Biological treatment of sewage |
|---|---|
| Back | Primary effluent is passed into large Aeration tanks It is pumped with air It is mechanically agitated Flocs are allowed to grow The effluent is passed into a settlement tank The sediment is called activated sludge and is the secondary effluent |
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