Method and system for reducing water loss in a paper mill

A method of conserving fluid in a paper machine system comprising the steps of:

• collecting, in a seal water tank, a fluid drained from a paper stock disposed on a wire of a wet end section of the paper machine, the fluid containing substantially no fibers from the paper stock;
• draining a quantity of the fluid from the seal water tank through a piping, the piping separating the quantity of the fluid drained into a wire pit flow and a recycling flow;
• directing the wire pit flow to a wire pit;
• eliminating a loss of a quantity of the fluid from the paper stock disposed on the wire of the wet end draining into a sewer by recycling the recycling flow into a process of the paper making system;
• measuring a level of fluid in the wire pit using a sensor, the sensor providing an output to a computer;
• positioning a first valve along the wire pit flow path, the first valve configured to control a fluid flow within the wire pit flow path, a first actuator of the first valve being in electronic communication with the computer;
• positioning a second valve along the recycling flow path, the second valve configured to control a fluid flow within the recycling flow path, a second actuator of the second valve being in electronic communication with the computer;
• eliminating an overflow of the wire pit by adjusting, using the computer, the wire pit flow to maintain the level of the fluid in the wire pit;
• wherein the step of adjusting, using the computer, the wire pit flow comprises the steps of:
• sending a first signal to the computer based on the level of fluid measured in the wire pit;
• sending a second signal to the first actuator of the first valve based on the first signal, the second signal triggering the first actuator to adjust the first valve;
• and
• recycling the recycling flow into a process of the paper machine system thereby significantly decreasing introduction of a fresh quantity of water to the paper machine system.