The usage of which type of pump results in less wear and tear while pumping the sludge?

To remove 1% primary sludge which of the following size of mesh of a cyclone gritter is used?

What is the thickened concentration of primary sludge combined with rotating biological contractor?

Which of the following is not a product of anaerobic digestion?

How many steps are present in anaerobic digestion?

To remove 3% primary sludge which of the following size of mesh of a cyclone gritter is used?

The liquid has high contents of phosphorus and nitrogen, if the sludge has been______

What is the thickened concentration of the primary sludge?