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प्रश्न
Activated sludge should have the ability to settle quickly so that it can ______.
विकल्प
be rapidly pumped back from sedimentation tank to aeration tank
absorb pathogenic bacteria present in waste water while sinking to the bottom of the settling tank
be discarded and anaerobically digested
absorb colloidal organic matter
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उत्तर
Activated sludge should have the ability to settle quickly so that it can be rapidly pumped back from sedimentation tank to aeration tank.
APPEARS IN
संबंधित प्रश्न
Explain the different steps involved during primary treatment phase of sewage.
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.
What is the key difference between primary and secondary sewage treatment?
Describe how do 'flocs' and 'activated sludge' help in Sewage Treatment.
Answer the following question.
What are 'flocs', formed during secondary treatment of sewage?
Name the chamber in which the suspended objects are filtered and removed during sewage treatment?
What are flocs with respect to sewage treatment?
The purpose of biological treatment of waste water is to ______.
Which of the following occurs during tertiary treatment?
Which of the following occurs during secondary treatment?
Identify the INCORRECT statement with respect to sewage treatment.
Study the following statements regarding tertiary treatment of sewage and choose the correct option.
i. It produces methane gas.
ii. The effluents formed from these plants undergo chlorination.
iii. BOD is significantly increased at this step.
iv. It includes screening and passage of effluent through grit chamber.
Which of the following process is a part of preliminary treatment of sewage?
In a sewage treatment plant, all of the following processes belong to secondary treatment except:
Name the states involved in Ganga action plan.
Discuss about the major programs that the Ministry of Environment and Forests, Government of India, has initiated for saving major Indian rivers from pollution.
In what way anaerobic sludge digestion is important in sewage treatments?
Explain the steps involved in preliminary treatment of sewage.
