Explain the Process of Secondary Treatment Given to the Primary Effluent up to the Point It Shows Significant Change in the Level of Biological Oxygen Demand (Bod) It - Biology

Advertisement Remove all ads
Advertisement Remove all ads
Advertisement Remove all ads

Explain the process of secondary treatment given to the primary effluent up to the point it shows significant change in the level of biological oxygen demand (BOD) it.

Advertisement Remove all ads


The effluent from the primary treatment is passed to aeration tanks where air is pumped into it. The useful aerobic microbes grow into flocs (masses of bacteria associated with fungal filaments) and consume the major part of the organic matter in the effluent which reduces BOD of the effluent. The effluent is then passed into a settling tank where bacterial flocs are allowed to sediment. This sediment is called activated sludge.

Concept: Microbes in Sewage Treatment
  Is there an error in this question or solution?
2014-2015 (March) All India Set 2

Video TutorialsVIEW ALL [1]


      Forgot password?
View in app×