What is the SDI assumed for reverse osmosis spiral wound?

In what range is the EE/O present in order to reduce one log of reduction?

Which of the following parameter is used by disc filters?

________ is used in detergents to soften water.

Macromolecules deposited uniformly on pore walls is called __

Which of these pollutants cannot be tolerated by the hollow fibre sheets?

While designing the demineralisation plant what is considered as the weak acidic cation load?

In which year was the disc filter developed?