LemTec™ Polishing Reactor

The LET™ Polishing Reactor (LPR) is an up-flow, attached-growth reactor that provides effective and affordable supplemental BOD removal and ammonia nitrogen (NH3-N) polishing municipal and industrial wastewater treatment facilities. Using well-proven attached-growth media technology, the LPR enhances the growth of nitrification bacteria that biologically oxidize ammonia in an aerobic environment.

The LPR can be used as a stand-alone package treatment system for low-loaded/small flow applications, or as an add-on to existing treatment processes. It has proven to be an economical and reliable solution for achieving stringent effluent limits. Whether added as a final polishing step for supplemental BOD removal, or for ammonia nitrogen (NH3-N) removal, the LPR is often the most cost-effective tertiary treatment process available.

Designed for simple operation, requiring virtually no operational interface, a small positive displacement blower is all that is needed to deliver aeration and mixing to the reactor. The aeration, mixing and fixed film attached growth media are components of the LPR process that enhance the growth of nitrification bacteria and oxidize ammonia within its aerobic environment to maximize ammonia removal and BOD polishing. With no internal moving parts and efficiently aerated fixed film-attached growth media, the energy cost to operate the LPR is minimal. The reactor can be economically sized to handle flows from 20,000 gpd to 2,000,000 gpd and the process allows for a wide range of influent BOD and ammonia loadings.

Using a small positive displacement blower to provide the aeration and mixing of the water and fixed film attached growth media, the LPR process enhances the growth of nitrification bacteria and oxidizes ammonia within its aerobic environment to maximize Ammonia removal and BOD polishing ensuring that our clients’ unique treatment objectives are met as cost-effectively and efficiently as possible.