Waste Water Treatment Plant Primary Treatment
Waste Water Treatment Plant - Primary
Waste Water Treatment Plant Primary treatment:
This is a mechanical process which involves screening and setting of large particles. First, the sewage is passed through screens of vertical bars to remove larger impurities such as metal cans, plastic bags, cloth pieces etc. The wastewater is then passed through a grit and sand removal tank called the grit chamber. The speed of the incoming wastewater is reduced so that sand grit, pebbles, etc. settle down. The water is then passed through huge sedimentation tanks. Here solid wastes such as faeces is allowed to settle down and the light floatable waste such as soaps, oils, plastics, and grease rise.
Solid waste that settles at the bottom in the primary treatment of wastewater is called the sludge. Light waste that rises to the top and floats, during wastewater treatment is called the scum.
When waste water is passed through bar screens in WWTP, it removes | |||
| Right Option : A | |||
| View Explanation | |||
Treatment of waste water involves physical, chemical and biological processes, which remove physical, chemical and biological matter that contaminates the waste water. In WWTP, in one of the steps, the water is allowed to settle in large tank which is sloped towards the middle. In it impurities settle at the bottom. These settled impurities are called ______________________ | |||
| Right Option : C | |||
| View Explanation | |||
Solid waste that settles at the bottom in the primary treatment of wastewater is called the ______________ . | |||
| Right Option : A | |||
| View Explanation | |||
Students / Parents Reviews [20]
Usually we see institutes offering objective based learning which usually causes a lag behind in subjective examinations which is the pattern followed by schools. I think it is really a work of planning to make us students grab the advantages of modes of examination, Objective Subjective and Onli...
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Cheshta
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10thAbhyas institute is one of the best coaching institute in the vicinity of Ambala Cantt area. The teachers of the institute are well experienced and very helpful in solving the problems of the students.The good thing of the institute is that it is providing extra classes for the students who are w...
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