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प्रश्न
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.
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उत्तर
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.
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संबंधित प्रश्न
Removal of large pieces of floating debris, oily substances, etc. during sewage treatment is called _______________.
The purpose of biological treatment of waste water is to ______.
Small part of activated sludge is passed back into ______ and major part is pumped into large tanks called ______.
In the process of sewage treatment, the activated sludge is digested by ______
During sewage, treatment biogas is produced wits which include:
Methanogenic bacteria are not found in ______.
After a significant reduction in the BOD of wastewater, it is passed into a settling tank where bacterial flocs are allowed to sediment. This sediment is called ______.
Which of the following statement is correct for Sewage Treatment Plants (STPs)?
Removal of suspended, floating, coarse and solid particles in sewage treatment is called ______.
During primary sewage treatment, floating debris is separated by which physical process?
