Apparatus and method for dosage and administration of liquid chemicals

A method of treating water comprising:

• pumping chemical liquid from a source of said chemical liquid;
• receiving said chemical liquid at a chemical liquid inlet of a channel block so that said chemical liquid flows within channels defined within said channel block;
• regulating the pressure of said chemical liquid flowing in said channels of said channel block so that said pressure does not exceed a desired pressure using an evacuation outlet for evacuating excess chemical liquid of said chemical liquid, wherein passage to said evacuation outlet is controlled by an evacuation regulation valve set at a pressure set point corresponding to said desired pressure;
• outflowing a dosed amount of said chemical liquid from said channel block at said desired pressure towards a body of water that requires treatment;
• and
• treating said water with said chemical liquid.

A channel block for a liquid chemical dosing apparatus having an upper surface and a bottom surface opposite to said upper surface, a front surface, and a rear surface opposite to said front surface, wherein said front surface is orthogonal to said upper surface, said channel block comprising:

• a process outlet positioned to allow discharge of a chemical liquid from said channel block travelling towards a delivery point of said chemical liquid;
• a chemical liquid inlet configured to receive said chemical liquid travelling into said channel block;
• an evacuation outlet positioned for evacuating excess chemical liquid in channels of said channel block in order to maintain pressure under a given pressure defined by a pressure set point in said channel block caused by said chemical liquid;
• channels provided within said channel block that connect at least said process outlet, said chemical liquid inlet and said evacuation outlet;
• a pressure indicator mounted to said channel block to measure pressure of said chemical liquid entering through said chemical liquid inlet;
• an evacuation regulation valve mounted to said channel block upstream of said evacuation outlet, set at said pressure set point, and interacting with said channels to control passage of said chemical liquid through a channel of said channels connecting said chemical liquid inlet to said evacuation outlet, for evacuating from said evacuation outlet said excess chemical liquid when said pressure set point is reached in said channel connecting said chemical liquid inlet to said evacuation outlet;
• and
• at least one control valve mounted to said block configured to control said chemical liquid passing through said channels, wherein a first control valve of said at least one control valve is situated with respect to said channels to control flow of said chemical liquid to said process outlet.