Related Questions

Consider the following statements in respect of aerated grit chamber: 1. The grit accumulates at the bottom in advancing spiral-flow aeration tanks location ally preceded by grit chambers, led to the eventual development of aerate grit chambers. 2. The excessive wear on grit handling equipment is a major factor for the popularity of aerated grit chambers. 3. Aerated grit chambers are designed to provide detention period of 1 minute at maximum rate of flow. 4. Diffusers are located at 0.45 m to 0.6 m above the bottom of the chamber. Which of the above statements are correct?
__________ substances present in sewage are removed in grit chamber during sewage treatment.
A stainless steel chamber contains Ar gas at a temperature T and pressure P. The total number of Ar atoms in the chamber is n. Now Ar gas in the chamber is replaced by CO2 gas and the total number of CO2 molecules in the chamber is n/2 at the same temperature T. The pressure in the chamber now is P’. Which one of the following relations holds true? (Both the gases behave as ideal gases)
Fine grit present in sewage is removed in the __________ during sewage treatment.
Consider the following statements in respect of flow equalization in a wastewater treatment plant: 1. Biological treatment is enhanced because shock loadings are eliminated or minimized. 2. Flow equalization is an attractive option for upgrading the performance of overloaded treatment plants. 3. Inhibiting substances can be diluted and pH can be stabilized. 4. Thickening performance of primary sedimentation tanks following grit removal is improved. Which of the above statements are correct?
Which of these is not a grit removal equipment installed in the aerated grit chamber?
What is the amount of grit quantities captured by the aerated grit chamber?
Grit chamber is constructed to protect the further mechanical equipment of the water treatment plant.
During sewage treatment, the sewage is subjected to __________ treatment in Imhoff tank.
In the question below is given a statement followed by two courses of action numbered I and II. You have to assume everything in the statement to be true and on the basis of the information given in the statement, decide which of the suggested course of action logically follow(s) for pursuing. Statement: Bacteria is very helpful in sewage treatment. Courses of Action: I: The people should avoid adding bacteria during sewage treatment. II: Anaerobic bacteria break down sludge and they produce methane gas.