Q. Which of the following food doesn’t detoxify our body by removing heavy metals?

View solution

Q. Which of the following methods cannot be used for removing heavy metals from waste water?

View solution

Q. ______________ causes sun block and prevent from reaching lower waters.

View solution

Q. The total fraction from COD that can be biodegraded by microorganisms is rbCOD.

View solution

Q. Which of the following adding would to remove the inorganic forms of phosphate?

View solution

Q. The removal of phosphorous from wastewater involves the unification of __________ and then removal from the solids?

View solution

Q. Enhanced biological phosphorus removal implementation is done in an anaerobic tank.

View solution

Q. Sewage treatment plant for the removal of phosphate in an activated sludge system is called as ________

View solution

Q. Nitric acid is formed during oxidation of ammonia.

View solution

Q. Nitrogen is returned back into the atmosphere by the activity of _________

View solution

Q. Nitrifying bacteria cannot survive at 0° C.

View solution

Q. The optimum growth temperature of nitrifying bacteria is __________

View solution

Q. Bacteria eat a lot of ammonia produced in the fish gills.

View solution

Q. Which of the following bacteria is involved in nitrification of ammonia?

View solution

Q. _____________ bacteria get the energy from oxidation of inorganic nitrogen compounds.

View solution

Q. Which of the following metal catalyst is not used during catalytic oxidation of ammonia?

View solution

Q. Nitrification of ammonia involves two oxidation stages.

View solution

Q. Biological oxidation of ammonia is called as ____________

View solution

Q. Particulate organic nitrogen is termed as the material that can pass through a 0.2-μm filter.

View solution

Q. The total Nitrogen load = (soluble organic nitrogen and ammonia from incoming wastewater) + (nitrogen from Return Activated Sludge) + (nitrogen from recirculation).

View solution