Chemical and Mineral Feed Systems for Water Treatment

Multiple problems may even be addressed with a single treatment system. For example, if the pH of your water is too low for effective iron removal, you can increase the pH by injecting soda ash, and add chlorine to oxidize the iron in a single operation.

And equipment purchased for one purpose can be easily converted to another. The high quality Stenner peristaltic pump can be used to feed chlorine or soda ash, for example, but is also capable of feeding hydrogen peroxide without losing its prime.

Feed systems are simple to install and to operate. (Go here for a diagram of a typical feed pump setup.)

We`ve divided this page into parts. Part A contains the essential equipment that any Stenner injection system needs to have. Part B includes useful and sometimes necessary add-ons. Part C lists some chemicals that can be injected with an injection system. Part D offers an informational summary of suggested chemical feed setups for common water problems.

What you must have:

• A solution tank to hold the solution you`re going to inject into your water.

• A pump to feed the solution into your water line.

• A simple tee connection to provide an entry port for the solution into your water line.

Some useful and often necessary additions:

• A holding, or retention tank, to allow the agent you`ve injected more residence time to do its work. Adding retention time always improves efficiency, and with some treatments — like using chlorine to kill bacteria — it`s essential.

• A “static mixer,” which can replace the simple tee connection and greatly improve performance by mixing the solution quickly and thoroughly with your water.

• Filters are sometimes needed to remove the “precipitated” contaminant (iron, for example), or to remove an injected chemical and its by-products after it has done its work. Chlorine, for example, can create some very undesirable spin-off chemicals.

Part A:
Essential Equipment: Pumps & Tanks

A Stenner Peristaltic Pump can be used for virtually any chemical feed application. All of our Stenner Pumps are basically the same, with minor differences noted in the chart below. They are all 100 PSI, with an easily adjustable feed rate.

They can be easily maintained with snap-on parts, and every pump comes with full instructions and installation kit. Pumps require easy routine maintenance