Turbo aerator

The Turbo X-Treme aerator from Airmaster Aerator is a high-efficiency, floating/surface unit powered by an energy-saving 25 hp motor. It incorporates a turbo blower to achieve high-capacity water movement with maximum aeration and mixing in a discharge manifold.

The aerator raises the dissolved oxygen level in ponds or lagoons in varied applications. Made of stainless steel, the unit is built for reliable, long-term operation. 888/813-3680; www.airmasteraerator.com

Work barge

The Utility Service Barge from American Pleasure Products provides a safe work environment on water. The 8- by 12-foot platform offers high stability and flotation from two pontoons. The barge, designed for servicing wastewater treatment ponds and lagoons, has an aluminum frame construction with stainless steel hardware, a non-slip deck with nickel-plate vinyl for stability and easy cleaning, and a heavy-duty handrail.

Users maneuver the barge with a small gasoline or electric motor. Options include a 1,000-pound-capacity lifting crane, galvanized float-on trailer with tongue jack, life rings, and pivot arms used to secure the barge to aerator tubes when service is being performed on diffuser drop tubes. 989/685-2697; www.aquacycleusa.com

Membrane system

Aqua UltraFiltration Membrane Systems from Aqua-Aerobic Systems offer a compact, T-rack design, zero-break fibers, and no air scouring. The fibers are made of polyethersulphone (PES) with seven capillaries per fiber for high strength and a 0.02 micron pore size. The alternating top and bottom feed and inside-out filtration flow provide uniform filtrate and backwash flows to minimize plugging, chemical usage and cleaning frequency.

The membranes can be cleaned with acid instead of chlorine. Small, uniform pores provide high virus removal. The systems are designed for wastewater reuse and reverse osmosis pretreatment, drinking water applications, and other purposes. 800/940-5008; www.aqua-aerobic.com

Membrane bioreactor

The PuraM membrane bioreactor from Anua is available in a range of mobile prefabricated carbon steel or stainless steel tank configurations and treats flows from 7,000 to 125,000 gpd. Concrete tanks suit flows above 1 mgd. The unit uses an enhanced air scour flat-plate design.

The system uses ultrafiltration to achieve high-quality effluent that meets water reuse and total nitrogen standards in a compact footprint. The pre-engineered unit is designed for applications that require reliability, and low operational input through long periods between chemical cleaning, ease of maintenance, and simplicity. The unit uses no back pulsing, on-site chemicals or permeate pumps. Systems can operate aboveground or in-ground with a range of screening and pumping packages. Add-ons for phosphorus and enhanced nitrogen removal are available. 336/547-9338; www.anua-us.com

Return bar screen

The MACH front raked, front/back return bar screen from Fairfield Service Company is offered in several designs to fit most applications requiring low headloss and high flow rates. The unit protects wastewater processing equipment by removing oversize debris. Chain-operated cleaning rakes intermesh with the bar rack and elevates debris to a discharge point where each rake is wiped off before descending on the return side.

The unit has involuntary squeeze protection that enables automatic obstruction clearing. When an obstruction is detected, the sensor causes the rake to change direction to dislodge it. If after a set number of directional changes the obstruction isn't cleared, the machine shuts down. With a stainless steel design and above-water drive mechanism, the unit offers high reliability and low maintenance. It can be coupled with the company's screw washer/compactor to maximize debris capture while minimizing the amount of debris for disposal. 219/872-3000; www.fairfieldservice.com

Aerobic/anoxic cycling

Phased Reactor technology from Kruger USA provides biological nutrient removal performance. A flexible and simple operating strategy provides aerobic/anoxic cycling of the entire process volume in a continuous flow with no need for MLSS recycle pumping. The BIO-DENITRO process meets stringent total nitrogen limits efficiently and reliably. With the Block and Hong anaerobic selector, the system provides fully optimized biological phosphorus removal.

Time- and nutrient-based control allow operators to customize the phasing to meet specific needs and optimize the system to incoming flow and load in real time. Traditional configurations using oxidation ditches provide mechanical simplicity. Advanced systems with diffused aeration in deep rectangular tanks provide energy efficiency and a minimized footprint. 919/677-8310; www.krugerusa.com

Mass flowmeter

The Model ST51 mass flowmeter from FCI – Fluid Component International measures biogas and all methane composition gases including natural gas. It uses a thermal mass, insertion-style flow element with flow accuracy to ± 1 percent of reading over a flow range from 0.3 to 400 SFPS, and repeatability of ± 0.5 percent of reading. The flow element can be used in 2- to 24-inch lines and operates over a wide turndown range.

The unit has no moving parts and a non-clogging design and operates over a wide flow range with low-flow sensitivity. Calibration is matched to the user's actual gas composition and installation conditions. 800/854-1993; www.fluidcomponents.com

Propeller pumps

Flygt submersible propeller pumps from Xylem move large volumes within low- to medium-head applications. The motor and hydraulics are integrated in one compact unit, enabling smaller, less complex and more cost-effective pumping stations. Operating submerged, they save space and avoid noise and motor cooling problems. With pump capacities from 4,000 to 120,000 gpm, the units fit applications including stormwater, raw water, and wastewater treatment plant effluent. Most units can be equipped with self-cleaning N-hydraulics that prevent clogging, reducing energy costs and downtime. 704/409-9700; www.flygtus.com

MBBR process

The ActiveCell Moving Bed Biofilm Reactor (MBBR) process from Headworks uses thousands of polyethylene biofilm carriers in mixed motion in an aerated wastewater treatment basin. Each piece of media increases productivity by providing protected surface area to support the growth of heterotrophic and autotrophic bacteria. The high-density population achieves high-rate biodegradation in a package that is reliable and easy to operate. 877/647-6667; www.headworksusa.com

Complete mix process

The Closed Loop Reactor (CLR) process from Lakeside Equipment Corporation is a modified form of the extended aeration complete mix process and provides biological nutrient removal using nonproprietary designs. Removal efficiencies meet and exceed those of advanced tertiary treatment processes. BNR configurations are available with in-basin designs for nitrification and denitrification, as well as an external selector configuration for Bio-P and total N removal.

Controls can be provided to continuously monitor and adjust reactor operations to optimize performance and reduce power costs. A Magna Rotor Aerator provides oxygen and mixing to the basin reliably and efficiently. The system provides complete mixing for the aeration basins and highly efficient oxygen transfer. 630/837-5640; www.lakeside-equipment.com

Submerged membrane module

PURON submerged membrane modules for MBR applications from Koch Membrane Systems are available in models PSH1800, PSH600 and PSH300. PURON PLUS systems are comprehensive, packaged MBR systems for flow rates up to 200,000 gpd. Modular MBR systems are available for flow rates up to 1.8 mgd per train and fit almost any plant layout or required flow rate. The systems offer efficient design, high productivity and small footprints. New fiber chemistry improves solids rejection, increases sustainable permeability, increases flux and reduces fouling. 888/677-5624; www.kochmembrane.com

Three-stage blowers

Three-stage TT blowers from FPZ are quiet and capable of pressures over 12 psig. The direct-drive blowers require no maintenance and are oil-free. With airflows over 1,500 cfm and pressures over 12 psi, the units fit most aeration applications. Optional silencer locations maximize installation flexibility. The units are available in ratings from 1/3 to 50 hp. 262/268-0180; www.fpz.com

Blower units

BBC and FBC blowers from the Com-paK Plus line from Kaeser Compressors cover 3 to 150 hp and are available in STC (wye-delta start) and OFC (variable-frequency drive) versions. Units arrive ready for use and include all necessary sensors, starters and drives and an on-board controller. The units meet international and domestic performance and safety standards. The Omega Control 2, with an Ethernet port and built-in Web server, enables remote access and seamless integration into plant control/monitoring systems such as the company's Sigma Air Manager (SAM). 877/596-7138; www.kaeser.com

Self-aspirating aerators

Fuchs self-aspirating aerators from Kusters Water can be used in lagoons, aeration basins and oxidation ditches. The shaft design uses tight tolerances and eliminates a lower guide or bearings, resulting in a lubrication-free system with low maintenance. The aerator can be installed on steel walkways, concrete walls or lagoon shores or provided with pontoons. The mounting design allows easy retrieval for maintenance and inspection. 800/264-7005; www.kusterswater.com

Injectors and nozzles

Aeration at Work high-efficiency injectors and mixing nozzles from Mazzei Injector Company efficiently transfer oxygen from ambient air to a recirculating flow from an activated sludge digester. The two-phase flow is mixed with the bulk stream by MTM nozzles at the bottom of the basin or oxidation ditch. 661/363-6500; www.mazzei.net

Gas transfer devices

Liqui-Cel Membrane Contactors from Membrana-Charlotte are modular gas transfer devices that use thousands of microporous hollow fibers to add or remove oxygen, carbon dioxide, nitrogen and other gases to or from different liquids. They are capable of O2 removal to <1 ppb and CO2 removal to <1 ppm. TOC/VOC and THM removal are also possible.

The units are used in the power and industrial markets, microelectronics, in municipal applications, and the beverage industry. The contactors are used to add gases to liquids, such as enhancing megasonic cleaning. 704/587-8888; www.liquicel.com

MBR technology

The microBLOX membrane bioreactor (MBR) from Ovivo is simple to operate and optimize. The single-stage process uses one set of blowers to provide mixing, air scouring and process oxygen. For higher-strength waste, concentrated oxygen can be added to the process. Each system meets stringent nutrient limits. Online monitoring is available for ammonia, nitrates and phosphorus. The ready-to-operate system offers a small footprint with gravity or suction filtration. 512/834-6000; www.ovivowater.com

Membrane cleaning

MeurerMBR MCP (mechanical cleaning process) from Meurer Research mechanically removes deposits on membranes. When small granules (beads) bounce back and forth throughout the membranes, removing the fouling layer, they are forced up along the sides of the membranes by the air-induced crossflow and settle back down by gravity. This nonchemical removal creates high-quality permeate, constant uptime and increased flux. 303/279-8431; www.meurerresearch.com

Denitrification system

Xylem's Leopold elimi-NITE 2.0 denitrification system is a gravity-flow, deep-bed mono-media sand filter for removing nitrate and phosphorus without increasing TSS and BOD. A gas-release cycle automatically determines the optimum time to release the nitrogen gas from the filter. At the same time phosphorus, in solid form, is removed along with other solids. The unit can achieve filter effluent nitrate <0.5 mg/L, phosphorus <0.2 mg/L and TSS <5.0 mg/L with no increase in BOD at design loading rates. 704/409-9700; www.fbleopold.com

Service program

Total Quality Service Packages for Premier Tech Aqua's Ecoprocess MBRs include fixed-free service, pre-scheduled visits or as-required service calls. The program includes four monthly maintenance visits after startup and comprehensive training for operations and maintenance personnel. The company also provides an operator-friendly control that adapts to flow changes in real time. Maintenance and sample services are customized to each customer's needs, and full inspection reports are provided after each visit. 800/632-6356; www.premiertechaqua.com

Biochemical oxidation

The BIO ENERGIZER micro carbon complex from Probiotic Solutions reduces sludge, odor, BOD/COD and FOG in wastewater treatment plants and lagoons. The formula biochemically oxidizes sludge and reduces the sludge blanket without draining, drying, dredging, handling or hauling. When used in activated sludge plants, the formula increases volatile solids destruction and improves decant volume and settleability. The formula uses the Micro Carbon Technology for maximum microbial stimulation to increase the production efficiency of treatment plants. 800/961-1220; www.probiotic.com

Oxidation ditch

Xylem's Sanitaire BioLoop oxidation ditch provides energy-efficient aeration and mixing to maintain healthy biomass for oxidation and nitrogen and phosphorus removal. The fine-bubble diffused aeration delivers 6.0 to 8.0 lb O2/hp-hr. The process typically includes aeration, submersible mixers, blowers, monitoring and process control with sludge age control, providing a flexible and simple design. It can accommodate stringent nitrogen and phosphorus removal regulations. 704/409-9700; www.sanitaire.com

Ragless impeller

The Clean Edge ragless impeller from SPX Flow Technology, Lightnin brand, remains free of fibrous debris while delivering high blending performance. The unit does not foul, prevents rag accumulation, and keeps the mixer operating smoothly at design power and without vibration or tripping out from overload. It achieves steady and stable operation in difficult conditions. 888/649-2378; www.spxft.com

Compact fan press

The Rotary Fan Press from Prime Solution simplifies sludge dewatering with continuous pressure differential technology. Features include slow rotational speed (less than 1 rpm), semi-automated operation, self-cleaning, low maintenance, long service life, energy efficiency, portability, compact footprint and expandability. Few mechanical parts and slow revolution reduce noise and vibration, increase functionality, minimize maintenance and improve life-cycle costs. The simple, compact design allows easy installation. Skid-mounted systems include a central operator control panel, feed pump, polymer system and inline mixing. The unit is available as a trailer-mounted system. 269/694-6666; www.psirotary.com

Alterable filter

The Fuzzy Filter from Schreiber operates at a very high flux (40 gpm per square foot), is compact and modular, and fits many water and wastewater applications. The filter uses a 30-inch-deep media bed of 1.25-inch compressible fiber spheres and removes solids down to 4 microns. The porosity of the filter bed can be altered with the push of a button to suit influent characteristics by mechanically compressing the media. Media porosity and solids removal can be optimized to maximize effluent quality and run time.

The filter uses influent water to wash the media. Using violent air scouring in concert with wash water injection, the media is cleaned easily with 1 to 2 percent wash water with no media loss. The filter is available in flows from 0.13 to 3.68 mgd at a loading rate of 40 gpm per square foot. Applications include tertiary wastewater, prefiltration to RO systems and water reuse. 205/655-7466; www.schreiberwater.com

MBR system

The pre-engineered TITAN MBR from Smith & Loveless delivers high-quality effluent for flows up to 3 mgd per tank. The unit combines wastewater treatment engineering with robust flat-plate membranes. Submerged in the aeration section of the unit, the flat-plate membrane maintains high permeability and flux rates even at peak-day rates. The system uses air scouring to prevent fouling. The membranes can easily be cleaned in place. The compact systems come in standard and custom designs and in flow capacities from 5,000 gpd to 3 mgd and larger. The system delivers effluent with less than 3 mg/L BOD, 1 mg/L TSS, 2 mg/L TKN and 1 mg/L NH3. 800/898-9122;  www.smithandloveless.com

Lime/sludge mixer

The MBV lime/sludge mixer from Sodimate has orientable paddle blades that efficiently mix lime and dewatered sludge. The mixer can be combined with sludge conveyors, sludge pumps and lime feed systems for an effective sludge stabilization process (Class B). Stainless steel construction makes it versatile for harsh municipal applications. Units can mix 0.5 to 15 tons/hr of dewatered sludge and can be trailer-mounted for remote treatment areas. The product is a homogenized and stabilized sludge with up to 30 percent dry solids. 773/665-8800; www.sodimate-inc.com