Aeration

Click here to enlarge imageWastewater treatmentThe Tri-Oval™ System from Aeration Industries combines energy-efficient Airo-O2 Triton® process aerators in optimized oxidation oval configurations creating an efficient, simple wastewater treatment process. The system provides high-rate activated sludge treatment.Aeration Industries InternationalChaska, MNTel: 612-448-6789Web: www.aireo2.com

Click here to enlarge imageAir diffusersSanitaire offers a complete line of aeration products. Its energy efficient fine bubble ceramic and membrane disc diffusers have been leaders in the industry for more than two decades and have more than 8 million holder installations between the two products. The stainless steel wide band coarse bubble diffusers have been in use since their inception by Sanitaire in 1967.Sanitaire Inc., ITT IndustriesBrown Deer, WITel: 414-365-2200Web: www.sanitaire.comAeratorsS&N Airoflo's™ horizontal brush wastewater aerators are constructed of 304L stainless steel. The units feature the company's unique blade and rotor design which allows the rotor to operate at deeper depths thus maximizing both design parameters for treatment-mixing and oxygen transfer. With more mixing and more oxygen, the system usually requires significantly less total horsepower, thus providing substantial energy savings.S&N AirofloGreenwood, MSTel: 800-844-4524Web: www.airoflo.com

Click here to enlarge imageJet aeration/mixingUSFilter Jet Tech Products is a specialist in wastewater treatment systems and equipment. Its equipment and processes include Membrane Bioreactors (MBR), Sequencing Batch Reactors (SBR), and Jet Aeration/Jet Mixing equipment for industrial and municipal wastewater treatment. Its unique Vari-Cant® Jet Aeration/Jet Mixing system provides both aeration and mixing using proven principles of submerged jet aeration, combined with state-of-the-art design and materials.USFilter, Jet Tech ProductsEdwardsville, KSTel: 913-422-7600

Click here to enlarge imageAir diffuserRed Valve has announced the latest addition to its line of fine bubble aeration products, the Tubeflex™ air diffuser. The diffuser features a built-in patented Tideflex® check valve that prevents clogging of the header pipe during power outages and routine shutdowns. The design allows for two diffusers instead of one to be attached to each saddle connection on the pipe in a "T" configuration. Features include the open-end design and a flexible connection.Red Valve Company, Inc.Carnegie, PA412-279-0044Web: www.redvalve.com

Click here to enlarge imageAir diffusersDiffused Gas Technologies recently introduced a new eight page brochure on its line of gas diffusers for the water and wastewater markets. The aeration devices are used in a range of aerobic wastewater treatment technologies such as package wastewater treatment plants, large-scale aeration basins, and equalization tanks and sludge digesters. The brochure reviews the basic history of the principles of diffused gas aeration and its use in the treatment of water and wastewater streams.Diffused Gas Technologies Inc.Cincinnati, OHTel: 513-531-4426

Click here to enlarge imageRotating aeratorThe STM-Aerotor combines the activated sludge and fixed film processes. As the unit rotates, atmospheric air is carried downward into the tank, where it is continuously released as fine bubbles providing aeration. No mixers or blowers are required. The rotational speed can be varied to provide appropriate levels of dissolved oxygen to the suspended microorganisms. A paddle on the periphery produces thorough mixing of the tank contents.WesTech Engineering, Inc.Salt Lake City, UTTel: 801-265-1000

Click here to enlarge imageDAF centrifugal pumpsEDUR DAF Pumps from Shanley Pump are now available in all-stainless steel construction. More suitable then the standard cast iron model, these stainless steel pumps are designed for lower pH wastewater treatment applications, as well as where ozone or other gases are injected into waste streams for treatment purposes. The pumps feature a compact design and, with flows up to 250 gpm, pressures to 200 psi. They handle up to 35% entrained air and gas, and create a microbubble size smaller than 30 micron with 93-100% guaranteed solubility.Shanley Pump & Equip. Inc.Arlington Heights, ILTel: 847-439-9200Web: www.shanleypump.comDO meterDanfoss' Evita DO meter offers flexible data communication. The new intrinsically safe OXY 4100 contains a 4-20 mA HART transmitter in the ball float. For oxygen profiling, up to 15 transmitters can be connected to one PLC using only two wires. Four fins on the ball float provide enhanced self-cleaning of the sensor.Danfoss Water & WastewaterMilwaukee, WITel: 414-355-8800Web: www.danfoss.com

Click here to enlarge imageVariable speed compressorsThe ExactRPM variable speed air compressor is the newest rotary screw package from Gardner Denvers. The compressor can save up to 40% on energy costs during part load applications. It will operate continuously at 100% of full load. The Model VS240 delivers 240 CFM down to 42 CFM (18% of full capacity). This broad airflow range fits the needs of plants that experience large fluctuations in air demand.Gardner Denver Inc.Quincy, ILTel: 800-682-9868Web: www.gardnerdenver.com

Click here to enlarge imageFloating aerationFBC Technologies offers the O2ctopus® floating aeration system. The system is based on the principle of diffusing air at the lowest possible basin depth. The deeper the bubble is produced, the longer it takes for the bubble to float to the surface, greatly improving the time needed to transfer oxygen through the bubble membrane into the water. A shore-based positive displacement blower supplies air to the floating O2ctopus units through a heavy-duty floating manifold system.FBC Technologies, Inc.Pittsford, NYTel: 716-383-1360

Click here to enlarge imageSurface aeratorThe Aqua-Lator™ High Speed Surface Aerator from USFilter Aerator Products is used widely for biological wastewater treatment. Effective wastewater treatment is created by the aerator's powerful pumping action, which transfers oxygen into the waste liquid, at the same time mixing and dispersing the oxygen enriched water.USFilter Aerator ProductsRoscoe, ILTel: 815-23-2111Web: www.usfilter.com

Click here to enlarge imageDiffuser systemUSFilter's Envirex Products' DualAir™ Fine Bubble Ceramic or Membrane Diffuser assembly uses a unique design of two diffuser bases molded into a single, curved saddle between them. This allows the assembly to be bonded to the air header pipe in such a way that each of the diffusers is located on the opposite side of the pipe. The unique design provides double the number of diffusers available per 20 ft. of air header, translating into reduced system costs, with fewer headers, pipe supports, piping connections, lower shipping costs, and less installation time.USFilter's Envirex ProductsWaukesha, WITel: 262-547-0141Web: www.usfilter.com

Click here to enlarge imageAerated filterSevern Trent Services offers the Tetra SAF™ (Submerged Aerated Filter) as a simplified alternative to other fixed-film biological processes such as BAF, MBBR, and RBCs. The system can be used for either secondary or tertiary treatment in retrofit or new-construction applications. Wastewater and process air are applied concurrently to a course media in an upflow mode. The system retains the advantages of fixed-film systems by providing high levels of treatment in a small footprint, yet minimizes historical problems associated with media pluggage, mechanical failure, and complex instrumentation.Severn Trent Services, Inc.Tampa, FLTel: 800-364-3931Web: www.tetraprocesstec.com

Click here to enlarge imageDO measurementGLI International offers three dissolved oxygen measurement technologies. Its Model 5040-series features patented self-cleaning Züllig sensors suitable for harsh wastewater treatment environments, especially those with high concentrations of grease and/or oil. Its Model 5600-series uses three-electrode polarographic Ross Cell technology, and features a 1-year guaranty for its replaceable membrane cartridge.GLI International, Inc.Milwaukee, WITel: 414-355-3601Web: www.gliint.com

Click here to enlarge imageRegenerative blowersFPZ has introduced a new series to its line of regenerative blowers. The SCL 115DH / 115SH blower is capable of producing 1530 scfm at open flow, 8.7 psig at maximum pressure, and 13.3 in. Hg at maximum vacuum. The company's blowers are suited for sewage aeration. Integral silencers are included and multiple electric motor options from 20 to 50 hp are available.FPZ, Inc.Grafton, WITel: 262-375-7360Web: www.fpz.com

Click here to enlarge imageAspirating aeratorA 15 hp Tornado surface aspirating aerator from Aeromix was recently tested to simulate its ability to start up and aerate, without the use of heaters or de-icers, after being frozen into 9 in. of ice. The test took place in a 600 ft2 outdoor test tank at the company's facility in Minneapolis, where temperatures bellow zero are common. The results show that the aerator design, with its patented sealed shaft and bearings, allows it to be completely frozen and still start freely.Aeromix Systems, IncorporatedMinneapolis, MNTel: 800-879-3677

Click here to enlarge imageDiffuser systemsThe Aqua EnduraTube™ (fine bubble diffuser), Aqua EnduraDisc™ (fine bubble diffuser), and Aqua CB-12/24™ (coarse bubble diffuser) compose Aqua-Aerobic Systems' new line of diffused aeration products. The fine bubble diffusers are constructed of perforated rubber membrane material, while the coarse bubble diffusers are constructed of stainless steel.Aqua-Aerobic Systems, Inc.Rockford, ILTel: 815-654-2501Web: www.aqua-aerobic.com