Q. Ferrous ions can supplement biological phosphate removal.

View solution

Q. Expand OLNAD.

View solution

Q. The major disadvantage of heterotrophic nitrification is ____________ for final disposal.

View solution

Q. Which of the following method can be used to treat crude sewage and nitrify secondary effluent?

View solution

Q. Duck weed can grow profusely in nutrient rich waste water.

View solution

Q. Which of the following methods can be used to convert organic pollutants into fish biomass?

View solution

Q. The bacterial biofilms and floating weeds interact in duckweed ponds resulting in decrease of nutrient load and _______ in waste water.

View solution

Q. The hollow rhizomes of the reeds generate a hydraulic pathway thereby treating sewage by ___________

View solution

Q. Which of the following factors doesn’t need to be considered in order to make the system of nutrient removal cost effective?

View solution

Q. __________ method can be used for enhancing the performance of waste stabilization ponds.

View solution

Q. Algal fish ponds require artificial aeration.

View solution

Q. Nitrogen and __________ are the main source for eutrophication of surface water?

View solution

Q. Ammonia is converted into nitrate which is converted into__________ and released into the atmosphere.

View solution

Q. Which of the following process is leads to removal of nitrogen gas from water?

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

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

View solution

Q. Biological oxidation of ammonia is called as ____________

View solution

Q. Nitrification of ammonia involves two oxidation stages.

View solution

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

View solution

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

View solution