Buildings/Structures
Legacy Building Solutions Tension Fabric Buildings
Combining rigid-frame engineering with the proven benefits of tension fabric membranes, Legacy Building Solutions offers fabric structures that are fully customizable. They utilize a durable rigid frame in place of the hollow-tube, open web truss “hoop” framing traditionally used for fabric structures. The strength of the structural steel frame provides several engineering advantages, most notably the ability to easily customize buildings to the exact width, length and height required. In addition to long clear spans, the buildings have straight sidewalls that maximize the useable square footage inside the structure. The design allows for much more structural flexibility than traditional fabric structures, including the ability to add lean-tos, mezzanines, sidewall doors and more. The structures are also engineered to provide desired overhangs or handle additional loads for items such as sprinklers and conveyors. 877-259-1528; www.legacybuildingsolutions.com
Clarifiers
Lakeside Spiraflo
The Spiraflo clarifier from Lakeside is a peripheral feed clarifier designed for the removal of suspended solids in a primary, secondary or tertiary clarification system. Wastewater enters the outer perimeter of the clarifier tank and is directed along the narrow raceway formed by the skirt and the outer wall. This flow pattern dissipates the wastewater’s hydraulic energy as it flows around the raceway, eventually spiraling down underneath the skirt and into the main settling area. The flow travels inward from the skirt toward the center of the tank, coinciding with the direction of the sludge, and the clarified water rises into the centrally located effluent weir trough. The combination of the spiraling flow pattern and the skirt eliminates all possibility of short-circuiting and provides better utilization of the total tank volume for more effective settling. 630-837-5640; www.lakeside-equipment.com
Coatings and Linings
AGRU America Sure-Grip
Sure-Grip liners from AGRU America are made of HDPE, HDPE-el, PP, PVDF or ECTFE, and serve as a long-term alternative to spray-applied concrete protection products. The liners prevent concrete corrosion and degradation, can substantially extend the lifetime of manhole liners and other structures and, by preventing exfiltration and infiltration, provide direct protection for the environment. The liners have anchoring systems that enable construction in areas of significant backpressure. Unlike spray-applied liners, which have to be reapplied regularly due to cracking or delamination, these liners are long-lasting, and are designed to avoid the residuals cost often associated with concrete spray-on liners, which require tank emptying and cleaning every few years for reapplication. 843-546-0600; www.agruamerica.com
Digesters/Components
RKI Instruments Digester Gas Monitor
Waste digester gas contains high levels of methane, carbon dioxide and hydrogen sulfide, with little to no oxygen. The RKI Instruments Digester Gas Monitor checks for all of these gases on a cyclic basis using a powerful air aspirator to draw a sample from up to 100 feet away. The system also handles high humidity and high hydrogen sulfide with filters, air aspiration and automatic purging of the sample line. Measurement time is just 4 minutes, taken at selectable intervals of 15 minutes, 1 hour, 4 hours, 8 hours, 24 hours or manually initiated. System integrity is maintained at all times for operation, flow and fault conditions employing relays, 4-20mA or Modbus signals. The outputs are the readings received from the last cycle taken. Readings, flowmeters and filters are easily visible through a NEMA 4X enclosure. 800-754-5165; www.rkiinstruments.com
Grating/Handrails/Ladders
Patterson davit crane
Patterson davit cranes are manufactured with a low maintenance, easy-to-assemble design. They are available in 1/2- and 1-ton capacities with key features such as a reliable brake with long life and readily available parts, a hot-dipped galvanized finish and no plastic sheaves or pulleys. 800-322-2018; www.pattersonmfg.com
Media/Media Filters
Alfa Laval AS-H Iso-Disc cloth media filters
Alfa Laval AS-H Iso-Disc cloth media filters can be engineered to maximize the filtration area in an existing basin. They provide superior tertiary filtration that can meet California Title 22 reuse standards. The design enables individual disc turbidity to be measured and allows users to see the flow from each one and, if necessary, isolate an individual disc for maintenance without disrupting the rest of the flow. 866-253-2528; www.alfalaval.us
Kruger USA Anox K5 Media
ANITA Mox is a sidestream deammonification technology that is offered in both MBBR and integrated fixed-film activated sludge configurations, depending on site conditions. As such, the system consists of engineered polyethylene carriers — Anox K5 Media from Kruger USA — to provide ample protected surface area for biofilm to thrive. The media (approximately the diameter of a quarter) hosts two types of bacteria in the same reactor. The outer layer consists primarily of ammonia oxidizing bacteria, which convert about half of the ammonia to nitrite. The inner layer consists mainly of anaerobic autotrophic ammonia oxidizer bacteria, which utilize the resulting nitrite and much of the remaining residual ammonia and convert them to nitrogen gas that is released harmlessly to the atmosphere. 919-677-8310; www.veoliawatertech.com
SUEZ Water Technologies & Solutions FiltraFast
The FiltraFast media filter from SUEZ Water Technologies & Solutions is designed for treatment of high flows and includes compressible media to enable up to 10 times the loading rate of conventional media filters. The high-rate downflow gravity or pressure filter uses hydraulic loading to create the required media porosity with no mechanical compressing devices. The backwash sequence is designed to enable maximum recovery, extend media life and limit energy consumption. Units are available in different configurations and can be customized to specific applications. Based on project requirements, units can be fully shop-assembled and delivered, or erected on site. 866-439-2837; www.suezwatertechnologies.com
Mixers
JDV Equipment Nozzle Mix System
The Nozzle Mix System from JDV Equipment is a dual-zone mixing technology that provides uniform mixing patterns that produce even distribution and a stable environment. It can help optimize solids suspension and contact to promote efficiency in a wide range of applications. The system is designed with pumps installed outside the tanks to facilitate ease of maintenance. The pumps are typically chopper pumps or pumps incorporating in-line grinders that prevent fibrous materials from accumulating and causing plugging problems. The application dictates which type(s) of the many varied pump options can be used. The high-velocity nozzles are mounted inside the tank and are oriented to discharge in a flow pattern that completely mixes the tank contents. 973-366-6556; www.jdvequipment.com
Mazzei Injector Co. venturi aeration system
The Mazzei Injector Co. venturi aeration system uses a simple pump to push effluent through a manifold that discharges into the bottom of a basin, no matter how deep. The effluent flow passes through venturi injectors where the pressure drop creates a vacuum that draws in air or oxygen, shearing and mixing it with the liquid, providing extremely high gas transfer efficiency. The vast majority of the remaining air is incorporated into the contents of the basin through high-shear mixing nozzles. The company’s computational fluid dynamics (CFD) team optimizes aeration systems for the precise sizing, placement and orientation of injectors, pumps, pipes and nozzles. Through CFD analysis, they can develop aeration systems with high turndown rates allowing operators to adjust flow and energy consumption to meet system needs. There are no moving parts to fix or replace, and injector systems have been used successfully in systems with solids levels as high as 6%. 661-363-6500; www.mazzei.net
Park Process VortaFlo
The VortaFlo static mixer from Park Process combines two mixing nozzles of different sizes to create turbulence and induce mixing. The addition of the injection quill allows chemicals or polymer to be injected in the mixing zone past the turbulence-creating nozzle prior to passing through the mixing nozzle. In the case of polymer flocculating biosolids, the turbulence nozzle causes the biosolids to roll in the mixing chamber so the polymer has maximum contact with biosolids particles prior to passing through the mixing nozzle, where flocculation is promoted. It is available in sizes ranging from a 1-inch inlet/outlet and 2-inch mixing chamber to a 12-inch inlet/outlet and 20-inch mixing chamber. 855-511-7275; www.parkprocess.com
Vaughan Turbo-S Mixer
The Turbo-S Mixer from the Vaughan is a small, powerful propeller mixer that is mounted vertically inside an 18-inch elbow and is capable of mixing a pit with just 2 feet of liquid above the floor. It incorporates an upper cutter above the propeller to stop wrapping and fibrous material binding to protect the mechanical seal. It can be used in dairy manure mixing and in municipal treatment plant anoxic zone mixing and oxidation ditches. It can be quickly implemented in primary influent channels, Bardenpho basin mixing, scum blanket mixing and primary sludge storage mixing. Additionally an optional turntable can allow it to be easily reaimed in the pit. 888-249-2467; www.chopperpumps.com
