Peristaltic metering pumps provide the most reliable means for injecting chemicals to maintain pH control for metal finishing waste water. Incoming rinse waters have suspended solids removed by filtration, activated carbon removes organic contaminants and ion exchange removes inorganic contaminants. Depending on the discharge limitations, pH adjustment may be required prior to release to the sewer. Whether adjusting the pH by injecting an alkaline or an acid, Stenner has a peristaltic pump that can perform the task.
Many industrial installations use two fixed output pumps often wired to a pH controller. These reliable self priming pumps can be used for batch treatment systems or for continuous chemical feed operations to meet pH guidelines. For precise accuracy in chemical delivery Stenner also offers a variable speed pump (SVP series) that accepts a 4-20mA signal for true proportional chemical feed.
There is a variety of Stenner models to choose from that provide a wide range of outputs for industrial waste water treatment systems. The Stenner Pump Company also offers a Tank System consisting of a metering pump and solution tank that is shipped pre-assembled for a quick and easy installation.