WEFTEC 2011 Preview

Aug. 1, 2011
WEFTEC® 2011, hosted by the Water Environment Federation, will take place October 15-19, 2011 at the Los Angeles Convention Center in Los Angeles, Calif.

WEFTEC® 2011, hosted by the Water Environment Federation, will take place October 15-19, 2011 at the Los Angeles Convention Center in Los Angeles, Calif. With a technical program of 115 technical sessions, 27 workshops and 8 local facility tours, the 84rd annual event is expected to draw thousands of water quality professionals and nearly 1000 exhibitors from around the world. For more information, see: www.weftec.org

Air/vacuum valve

The Air/Vacuum Valve from Larox Flowsys automatically exhausts large volumes of air from the system while it is being filled with slurry. When the contamination is being emptied, air displaces the fluid and re-enters the pipeline to equalize pressure. It prevents discharge of the medium to keep your work environment clean and safe. When the system is filled and operating, the fluid lifts the ball until it closes the orifice. The orifice will remain closed until the system is emptied. Air may enter the valve and displace the fluid while the system is operating, but the internal pressure will keep the valve tightly shut. The valve will not re-open until the system pressure drops to near atmospheric pressure and the ball is no longer buoyant. Working pressure standards are 150 up to 1500 psig for air release valves, and up to 240 psig for combination valves for use on slurries.
Larox Flowsys Inc.,www.larox.us
Booth 8916

Process control

The Burkert mxControl Type 8620 unit is designed to automate the control of process variables within a water treatment system. It can reduce controller and instrument costs by as much as half by integrating all control, monitoring and display features as well as data and event logging functions into one compact unit. It incorporates multi-parameter panel mounted transmitters into single platform multi-parameter controllers. In cooling towers, reverse osmosis applications and boiler systems this can also save time and space by allowing parameterization of a wide number of control variants via the integrated SD card slot, USP or connection via Ethernet.
, www.burkert-usa.com
Booth 5727

Screening system

The Duperon® Perforated Plate brings simplicity and reliability to Ultra Screening. Through the cleaning power of Hydropression™, the company is able to effectively clear a static screen while using patented FlexLink™ technology. Just like the Duperon® FlexRake®, the Perforated Plate operates without submerged bearings, bushings or sprockets – ensuring reliable screening with little maintenance in even the harshest environments. The plate performs against the most stubborn debris the plant can offer: hair, grease, plastics, paper, and small particulate matter, to name a few. Duperon®, www.duperon.com
Booth 829

Solar mixing systems

SolarBee mixers help reduce energy costs in wastewater treatment plants and improve water quality in potable water tanks. The company’s solar-powered mixers can supply most of the mixing energy required in any wastewater treatment pond, reducing the hours that the aeration system must operate, thereby reducing energy costs. They help reduce effluent BOD, TSS and ammonia and control odor while improving water quality to meet NPDES limits. For activated sludge treatment plants, the solar-powered mixers take over the mixing function in the main reactor and other basins to reduce aeration requirements.
SolarBee Inc., www.solarbee.com
Booth 2837

Glass lined tanks

With over 50 years experience, Fusion Tanks & Silos offers glass lined tanks and silos for the wastewater and potable water sectors. Over 300,000 tanks and silos have been installed worldwide. The Fusion Glass Lined Tank modular design and build concept offers numerous benefits and is certified to NSF/ANSI 61. In 2008 a 3 million gallon Fusion® tank was installed in Florida storing reuse water making this tank one of the largest Glass-Fused-to-Steel tanks in the USA.
Fusion Tanks & Silos, www.fusiontanks.com
Booth 4553

Wastewater disinfection

The new TrojanUVSigna™ system is suited for providing UV disinfection at wastewater treatment plants. The system incorporates revolutionary innovations, including TrojanUVSolo Lamp™ Technology, to reduce the total cost of ownership and simplify operation and maintenance. It is the ideal solution for large facilities wanting to upgrade their disinfection system or convert from chlorine.
, www.trojanuv.com
Booth 1501

Flow monitoring

Automata offers a solar powered wireless system that monitors flow rate, total flow and run time. The system is composed of three parts: NanoCourier™-SAT with satellite transmission, flow meter and solar charger. The NanoCourier™ station reports via satellite and posts the data to the company’s Webserver. The user may use the server for all data storage and manipulation or may download the data to a specified location via RSS feeds.
Automata Inc.
, www.automata-inc.com
Booth 4204

Polymer pipe

Centrifugally cast, fiberglass-reinforced, polymer mortar Hobas pipe is inherently corrosion resistant and provides a very low life-cycle cost. Key applications are sanitary and storm sewers, potable water and corrosive environments. Its benefits include superior hydraulics, light weight, and high strength. Installation methods include open cut, sliplining, jacking, microtunneling, two-pass tunnel, casing carrier and above ground. Sizes range from 18” to 110” for both pressure and gravity applications.
Hobas Pipe USA
, www.hobas.com
Booth 349

Chlorine analyzer

The Signet 4630 Chlorine Analyzer System is a fully integrated all-in-one system which provides a turnkey solution for accurately measuring free chlorine. Designed with amperometric sensing technology, the analyzer incorporates a clear flow cell, flow regulator, sensors, filter and variable area flow indicator all in one compact unit. A key feature of the new device is a built-in flow regulator that automatically controls the flow stream across the sensor’s membrane, resulting in reduced bubbles for improved system accuracy. Installation can be made into any service point in the system where nominal pressure is 15 to 120 psi.
GF Piping Systems
, www.gfpiping.com
Booth 5733

Storage tanks

DYK and Natgun have jointly announced the merger of their companies and the formation of their new parent company DN Tanks, Inc. Both companies specialize in the design and construction of prestressed concrete storage tanks used for potable water, wastewater, chilled water, and other liquids. The merger of the two companies, with over 130 years of combined experience, creates the largest producer of wire and strand-wound prestressed concrete tanks in the world.
DN Tanks, www.dntanks.com
Booth 1300

Level transmitter

The LevelRat by Keller America is designed for lift station level measurement. The unique, Kynar® diaphragm combines the non-stick properties of Teflon® with superior resistance to puncture and abrasion. The result is a small, non-fouling level transmitter fit for use in even the worst environments, without the need for bulky and expensive protective cages. The transmitter also includes the company’s guaranteed lightning protection at no additional charge.
Keller America, 877-253-5537, www.kelleramerica
Booth 8619


The Atlas Copco ZS blowers provide the lowest operating life cycle costs available in the industry, according to the manufacturer. The rotary screw compression technology brings a wide operating flow range and energy efficiency in a competitive package. Reliability is backed by a comprehensive service organization.
Atlas Copco
, www.efficiencyblowers.com
Booth 5257

Nitrate analyzer

The Hach NITRATAX™ sc UV Nitrate analyzer incorporates breakthrough technology for in-situ continuous nitrate analysis. Using advanced ultraviolet (UV) absorption technology, it offers simplicity and accuracy in nitrate analysis. By continuously measuring the UV light absorbed by nitrates, the instrument eliminates the need for reagents, sample conditioning and frequent calibrations. With few moving parts, the analyzer is simple to operate and maintain. It can be used with the same Hach sc digital controller as luminescence dissolved oxygen (LDO), pH, ORP, suspended solids, conductivity, or sludge level.
Hach Co., www.hach.com/wastewater
Booth 1601

Water quality monitoring

The Ultrapen™ PT1 from Myron L is designed to be accurate, fast and simple to use in diverse water quality applications. Advanced features include the ability to select from three different solution types that model the characteristics of the most commonly encountered types of water; proprietary temperature compensation and TDS conversion algorithms; highly stable microprocessor-based circuitry; user-intuitive design; and waterproof housing. To take a measurement, users simply press a button then dip the pen in solution. Results display in seconds. Myron L Co., www.myronl.com
Booth 411

Pressure reducing valve

Singer Valve will highlight its patented Pressure Reducing Valve with Integral Back-up (PR-SM) and the patented Dynamic Lifter Sewage Pressure Relief Valve (DL). The patented PR-SM is engineered to be used anywhere pressure reducing valve failure is not acceptable. This valve has a second and independent operating system superimposed on the standard primary system. With the assurance of a back-up system, pressures will continue to be controlled even in the event of failure with the primary system. The DL is a direct-acting spring-loaded relief valve that opens when the inlet pressure exceeds the set-point. It closes drip tight when pressure falls below the set-point.
Singer Valve, www.singervalve.com
Booth 1781

Storage tanks

Tank Connection is a global provider of storage containment systems. The company provides assistance at every stage of a project. Its dedicated site for liquid storage, www.liquidtanks.com, has tools that make it possible to select and specify a tank in less than five minutes. Capacity calculators are available on the site, and specifications for AWWA D103, AWWA D100, FM, API and Field-Weld tanks may be downloaded and customized. Reference designs for RTP (rolled, tapered panel) bolted construction, shop-weld and field-weld construction are available on the home page.
Tank Connection, www.tankconnection.com
Booth 5067

Stainless steel strainers

Miller-Leaman’s stainless steel Thompson Strainers are designed to remove sand, sediment and debris from water and wastewater piping systems. The strainers feature a large conical screen, offering substantially more screen surface area versus traditional y-strainers, basket strainers, etc. The strainers are available with a large variety of mesh options, ranging from large perforated hole openings down to approximately 50-micron.
Miller-Leaman Inc.,
Booth 5734

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