Submerged, attached-growth media modules are a feature of the LPR. Each module is comprised of plastic cross-flow media, which enhances the growth of nitrification bacteria to encourage conversion of ammonia to nitrates and nitrites in an aerobic environment. Aeration is provided by rack-mounted coarse-bubble diffusers located under the media, which evenly distribute air and shear coarse bubbles into very fine bubbles. Each media module is contained in a stainless steel support structure.
Lemna USA, Inc., 1408 Northland Drive, Suite 310, St. Paul, MN, 55120. Tel:612-688-0836.