When the water flow out of the over water clarifier is stored in the intermediate tank before they pump into sand filter.Then we'll fill the Naocl again before storing the water and clarified in the following apply.
When water over flow of water from the clarifier are stored in the intermediate tank before the pump into the sand filter and then we will fill Naocl again before storing it in the clarified water and apply to the next.
When the water over flow out of clarifier water is stored in intermediate tank before pump into sand filter.Then we will fill the Naocl again before the store in clarified water and used.