Advertisements
Advertisements
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.
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.
APPEARS IN
संबंधित प्रश्न
What is the key difference between primary and secondary sewage treatment?
What is primary treatment of sewage?
After which of the following process effluents from anaerobic sludge digesters are released in natural water bodies?
Which of the following occurs during secondary treatment?
Which of the following is TRUE regarding 'Flocs'?
In the process of sewage treatment, the activated sludge is digested by ______
Discuss about the major programs that the Ministry of Environment and Forests, Government of India, has initiated for saving major Indian rivers from pollution.
Ganga has recently been declared the national river. Discuss the implication with respect to pollution of this river.
In what way anaerobic sludge digestion is important in sewage treatments?
Given below is the flowchart of sewage treatment. Identify A, B, C, D and E and select the correct option.
