Q. Amino nitrogen and heterocyclic nitrogen can be degraded by biological method by first converting it into ______________

View solution

Q. Which of the following process is not involved in the removal of nitrogen?

View solution

Q. Autotrophic nitrification leads to formation of nitrate by conversion of ammonia.

View solution

Q. Which of the following is not an after effect of accumulation of nitrogen and phosphorus in aquatic ecosystem?

View solution

Q. Which of the following genera the nitrifying bacteria doesn’t belong to?

View solution

Q. The optimal removal of phosphate by biological method should have a COD/P ratio of 20g COD/g of phosphate.

View solution

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