Distinguish between Solution feed and direct feed chlorination?

Solution feed chlorination involves adding a chlorine solution directly into the water to disinfect it, while direct feed chlorination involves adding chlorine gas directly into the water to disinfect it. Solution feed chlorination is typically used for smaller water treatment systems, while direct feed chlorination is more commonly used for larger water treatment systems. Solution feed chlorination is easier to control and monitor, while direct feed chlorination requires more specialized equipment and training.