Click here to enlarge imageModular RO systemMUNI Series™ reverse osmosis (RO) water treatment systems from Osmonics are specifically designed for municipal water treatment. These pre-engineered systems feature low energy consumption and require minimal engineering resources and floor space. With capacities ranging from 70 gpm to 2.5 mgd, the series' six standard models can meet the needs of communities with populations from 1000 to 10,000 people.Osmonics Inc.Minnetonka, MNTel: 888-898-6766Web: www.osmonics.comBiofiltersBiorem Technologies provides complete turnkey installation of biofilters for air emission control. The services include process development, including pilot plant operation if necessary, system engineering design, system installation and on-going process monitoring. Air purification systems eliminate the nuisance factor of noxious odors and the impact on workers and the surrounding population. Biological air filters provide cost-effective and reliable removal of water soluble contaminants from air streams.Biorem Technologies Inc.Guelph, Ontario, CanadaTel: 519-767-9100Web: www.bioremtech.comMonolithic filter floorOrthos Liquid Systems offers a Monolithic Concrete Filter Floor. The system's versatility allows the in-situ construction of new or retrofit suspended floors and permits efficient backwash and air scour. The form panels are available in either a flat profile for pier mounting or a corrugated style for use with dwarf walls. The panels can be cut on site for exact sizing without the loss of strength and rigidity. Nozzle densities can be specified and any nozzle offered by Orthos can be used.Orthos Liquid Systems, Inc.Bluffton, SCTel: 843-987-7200Filtration mediaBest Sand is a producer of high grade silica sand and gravel for use as filtration media. Washed and dried sands are available in an effective size/uniformity coefficient of .40-.50 mm/uc 1.5 to .80-2.00 mm/uc 1.7. Silica, anthracite and garnet gravels are available in a variety of sizes. Both sand and gravel can be shipped in bags ranging from 50 to 4,000 lb., or in bulk containers.Best Sand Co.Chardon, OHTel: 800-237-4986NanofiltrationThe Dow Chemical Co. is introducing a new line of FILMTEC® nanofiltration membrane module products. The membranes are available in several versions for specific application needs. The new NF90-400 membrane family is a high area, high productivity membrane module designed to remove most salts, nitrates, iron, and organic compounds.The Dow Chemical Co.Midland, MITel: 517-636-9086Web: www.filmtec.comNanofiltrationThe Fyne Process water treatment system from PCI Membrane Systems is a chemical-free nanofiltration membrane process designed to meet the needs of small communities. In an Environmental Technology Verification test at Barrow, AK, the system recently was demonstrated to meet the Stage 1 Disinfection By-Products Rule. For treating small surface water flows of 1000 GPD or more, the tubular membranes are low maintenance compared to some other systems. The units require minimal operator intervention, little to no source water pretreatment and infrequent chemical cleaning.PCI Membrane Systems, Inc.Milford, OHTel: 513-575-3500Web: www.pcims.com