Sewage Treatment Plants (STPs) are those plants where sewage water is treated before its discharge into the rivers. Discuss the following:
Sewage treatment provides not only usable water but also generates fuel. Justify the statement.

Sewage Treatment Plants (STPs) are those plants where sewage water is treated before its discharge into the rivers. Discuss the following: What is sewage composition?

Sewage Treatment Plants (STPs) are those plants where sewage water is treated before its discharge into the rivers. Discuss the following: Why the secondary treatment is also called biological treatment?

Sewage Treatment Plants (STPs) are those plants where sewage water is treated before its discharge into the rivers. Discuss the following: To which types of treatment, the sewage water is subjected to? Enlist the significance of each treatment type.

Microbes play a dual role when used for sewage treatment as they not only help to retrieve usable water but also generate fuel. Write in points how this happens.

Large quantity of sewage is generated every day in cities and towns, Which is treated in Sewage Treatment Plants (STPs) to make it less polluted. Given below is the flow diagram of one of the stages of STP. Observe the given flow diagram and answer the questions accordigly. Write the technical term used for the sediment formed. MEntion its significance.

Large quantity of sewage is generated every day in cities and towns, Which is treated in Sewage Treatment Plants (STPs) to make it less polluted. Given below is the flow diagram of one of the stages of STP. Observe the given flow diagram and answer the questions accordigly. Explain the final step that results in the formation of biogas in the large tank before the treated effluent is released into waterbodies.

Large quantity of sewage is generated every day in cities and towns, Which is treated in Sewage Treatment Plants (STPs) to make it less polluted. Given below is the flow diagram of one of the stages of STP. Observe the given flow diagram and answer the questions accordigly. Why is primary effluent passed into large aeration tanks?

Explain why some times foaming is seen in river water near the place where sewage water is poured after treatment?

While studying pollution of water, a group of students observed mortality of fish in the river flowing through the city and also in the pond which was away from the city but was adjacent to the crop fields. They further found that drains of the city discharged sewage into the river and the water from farms flowed into the pond. Explain how these could be the cause of fish mortality.

Three water samples namely river water, untreated sewage water and secondary effluent discharged from a sewage treatment plant were subjected to BOD tcsl. The samples were labelled A, B and C: but the laboratory attendant did not note which was which, The BOD values of the three samples A, B and C were recorded as 20mg/L. 8mg/L and 400mg/L. respectively. Which sample of the water is most polluted? Can you assign the correct label to each assuming the river water is relatively clean?