Chemical Feed Applications are Driven by Metering Pumps

Many commercial and industrial sites rely on the addition of chemicals in various processes throughout the facility to prevent water quality issues. Prevention of water quality issues is important because poor water quality can easily lead to scale build up, corrosion, and biological fouling. All of these conditions are much more cost effective to prevent than remedy.

LMI Diaphragm Metering Pumps or Chemical Feed Pumps, are defined by ANSI 7.1, as “reciprocating positive displacement pumps typically used for the injection of chemical additives, proportional blending of multiple components, or metered transfer of a single liquid. These types of pumps are used in applications requiring accurate, repeatable, and an adjustable rate of flow.”

LMI metering pumps and LMI controllers utilized in chemical feed systems are simple ways commercial and industrial sites can improve their processes. Robust and reliable chemical feed equipment can yield substantial advantages in a wide range of industrial and commercial water applications, including:

Common Chemical Feed Applications:

Some other common chemical feed applications in which metering pumps are heavily relied on are:

Water and Wastewater - It is critical to properly treat process water prior to discharge into the environment. Industrial wastewater operators need to evaluate and adjust many different water parameters with the proper combination of chemicals. Prior to discharge, water will undergo pH adjustment, removal of large particles via coagulation, flocculation, and filtration, antifoam agent addition, and disinfection.

Disinfection - Disinfection is common in many chemical treatment processes. Chlorinating a pool or fountain and disinfection for municipal potable and wastewater treatment are common applications.

The addition of sodium hypochlorite (commonly referred to as chlorine or bleach) is one of the more common chemical feed processes today. There are many strict controls on chemical amounts to both properly disinfect the water and minimize adverse health effects. It is important to neither underdose or overdose this chemical because of these limits.

Utilities – Treating water properly in re-circulating water systems helps to avoid expensive unplanned outages and plant de-rates. Furthermore, properly injecting chemicals keeps equipment running longer at higher efficiency levels.

Process Water – Accurately metering chemicals helps remove dissolved minerals and other impurities, increasing overall water quality. Additionally, with chemical costs increasing, it is important to accurately meter chemicals to reduce overall chemical expenditures while providing properly treated water

Highly accurate and reliable products are critical in supporting these mission critical applications. By using reliable, repeatable, and accurate chemical feed products not only optimize capital equipment longevity, but also enhance reliability and reduce energy consumption. In applications where microbiological fouling is of concern, metering pumps are used to protect public health.