This pH Neutralization system is installed in Mexico. The system shares a framework and control panel with a Beta Hydrochloric Acid Recovery System, located behind the yellow railing.
System view during installation. The shared control panel is being connected to the wires for the automatic components.
The filter press is located near system framework.
The PanelView operator interface is located on the outside of the control panel.
Displayed on the PanelView is the Welcome screen.
Pushing the Start button from the Welcome screen brings up the Operation screen. This screen displays flows, temperatures, and levels. The screen buttons on the bottom provide access to other screens: history, set points, operating trends.
The waste stream enters the pH Neutralization Tank first. Chemicals are added to this tank to adjust the pH between 8 and 9.
Two pH probes are used in our pH neutralization tank. In the event that one pH probe is faulty, the system notifies the operator. This redundancy insures against system upsets and minimizes operator attention.
The pH adjusted waste stream is pumped into the Polymer Blend Tank where polymer is added.
The Lamella discharges clarified waste water (effluent). The metal hydroxides settle to the bottom of the inclined plate settler inside the Lamella.
From the bottom of the Lamella, sludge is pumped to the Sludge Thickener Tank.
The sludge enters the Filter Press for dewatering and compression into a cake. When the filter press is full, the system’s software program notifies the operator. The emptying process is manual and requires cleaning the filter cake from the filter chambers into the cake holding bin. This process is usually performed once each day and requires about 30-45 minutes.
