Application Planttechnology Solution Domestic sewage is discharged into the presettling basin where it is mechanically cleaned first. Then the pre- purified sewage is conveyed to the activating basin. In the first phase, the nitrification phase, oxygen is added in the form of compressed air to support the growth of oxygen consuming bacteria to form what is known as 'activated sludge'. In a second phase, the denitrification phase, no oxygen is add

Join for free to read