Wastewater Treatment Systems

Wastewater Treatment Systems
High-Speed Turbo Blower from APG-Neuros

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Noncontact blower

The High-Speed Turbo Blower from APG-Neuros operates an oil-free noncontact air bearing system, making aeration more energy efficient and reducing operating costs. The blower reaches flow rates up to 20,000 scfm and design-discharge pressures up to 15.5 psig. All models are equipped with a PLC, and power ratings range from 30 to 700 hp. Dual-core models (400 to 700 hp) combine two cores in the same unit to offer a wide flow range and turndown rate of up to 76 percent. The blower has a 55 percent smaller footprint than conventional blowers. 866/592-9482; www.apg-neuros.com.


Multiple processes

Activated sludge wastewater treatment systems from Ashbrook Simon-Hartley use the conventional activated sludge process, extended aeration process and completely mixed activated sludge process. The conventional process includes an aeration tank with a long, narrow configuration so that the wastewater flows through the tank and approximates plug flow. The extended process provides 24 hours of aeration coupled with a defined settling period to achieve high-quality effluent.

In the completely mixed process, the aeration tank is mixed with air blown in through diffusers. The tank geometry and mechanical mixing are designed to approximate a completely mixed reactor. The main applications are sludge flows of high concentration or hard-to-oxidize waste. The complete mixing dilutes such flows into the entire tank’s contents more rapidly than a plug flow design. Flow capacities range from 5,000 gpd to 3.0 mgd. 800/547-7273; www.as-h.com.


Screw blowers

ZS screw blowers from Atlas Copco offer an energy-efficient range for air blowing applications. The blowers use internal compression instead of external compression. The technology is a scaled version of the principles used in an air compressor: paired male and female rotors trap and then squeeze air between them. Air is compressed internally during each rotation. The oil-free compressors have flow ranges from 176 to 2,700 cfm and pressure ranges from 4.35 to 17 psig. 803/817-7479; www.efficiencyblowers.com.


Filament foaming

Foam Buster from AQUAFIX is a micronutrient blend to control foaming and reduce filaments in wastewater processes. The blend contains vitamins and biostimulants that help overcome filament foaming and settling. The product works in oxidation ditches, SBRs, extended aeration treatment plants and aerobic digesters.

Filaments such as Microthrix parvicella, Nocardia and Type 1863 can be controlled. The blend energizes naturally occurring bacteria to degrade fats, oils and grease along with surfactants. It also reduces sludge and scum production and lowers BOD and TSS. 888/757-9577; www.teamaquafix.com.


UV disinfection

The OpenLine UV disinfection system from Aquionics uses open-channel, low-pressure, high-output UV amalgam lamps to destroy microorganisms’ reproductive abilities on a cellular level. Treated effluent is free of residual chemicals. The system is available in eight models with flows from 15 to 1,400 gpm. The UV lamps have a 14,000-hour lamp-life guarantee and an automatic quartz sleeve wiping system for reduced maintenance. 800/925-0440; www.aquionics.com.


Advanced SBR

The Advanced Sequencing Batch Reactor (ASBR) wastewater treatment system from AWT Technologies delivers high-quality effluent with biological nutrient removal at low capital investment. The system uses fewer tanks and minimal equipment to make maintenance easy and operation simple. Single or multiple basins provide operational flexibility, while high-efficiency aeration minimizes power consumption. The system provides flow capacities from 5,000 gpd to more than 50 mgd. 403/453-2298; www.awt-technologies.com.


Liquid deodorizers

Microcat-ECL and Microcat-DNTRF from Bioscience alleviate odor problems caused by FOG deposits and oxygen-deficient areas that favor anaerobic bacteria, which generate sulfides. Microcat-ECL is a liquid blend of natural proteins and surfactants that emulsifies, removes and breaks down odor-causing materials. It is formulated for primary treatment, sludge processing and handling, and anaerobic or facultative lagoons.

Microcat-DNTRF is a synergistic blend of selected, adapted microorganisms to liquefy and degrade greases and fats and to maintain plumbing and collection systems free of blockages. It also contains enzymes and ingredients to keep drains and traps clear. It helps minimize the buildup of FOG without causing downstream problems. 800/627-3069; www.bioscienceinc.com.


Extended aeration

The BIOWORKS wastewater treatment system from BIOWORKS North America uses large-volume earthen or concrete basins for long sludge age and a stable extended aeration process. Components include the OXIWORKS energy-saving aeration system and OXIRISE maintenance and retrieval system. Systems feature nitrification, denitrification and biological phosphorus removal in one module, while a crossflow clarifier provides optimum settling efficiency. 912/445-5021; www.bioworksus.com.


Green batch reactor

Sequencing batch reactors (SBR) from Cromaglass Corporation use automatic programming to reduce unnecessary aeration and cut electrical consumption. The units, covers and locking hatches are constructed of lightweight fiberglass. Recent manufacturing initiatives lowered emissions of air pollutants and reduced wastes; only raw materials and adhesives emitting the least amount of pollutants are used. 570/326-3396; www.cromaglass.com.


Diffuser system

The FlexAir StreamLine diffuser system from Environmental Dynamics International includes multiple sizes and configurations to meet the wide range of aeration applications. The system eliminates air distribution piping and individual diffuser components. High stress points and material fatigue are reduced using integral diffusers, a tubular membrane, and inline support components. The diffuser family includes several models, each delivering flexibility, oxygen transfer efficiency and mechanical performance. 877/334-2478; www.wastewater.com.


Quiet aeration blowers

Bi-lobe (MB Series) and tri-lobe (ZG Series) aeration blowers and packages from Eurus Blower are rated at 15 psig with airflows to 3,950 cfm. Used for MBRs, sludge tanks and equalization tanks, the blowers have integral-shaft ductile iron impellers, dual-splash lubrication, oversized roller bearings, piston ring air seals and viton lip seals.

The blower packages feature high-efficiency intake filter/silencers with washable polyurethane filter media, combination base and heavy-duty discharge silencer and vibration dampers for noise and vibration control, plus OSHA guard and V-belt drive with auto belt tensioner for easy maintenance. Optional equipment includes motors to 200 hp, check valve, safety valve, flexible connector, and sound enclosure. 757/538-1717; www.eurusblower.com.


Three-stage blower

Three-stage regenerative blowers from FPZ allow for quiet, maintenance-free operation that produces pressures over 12 psig. The additional pressure capability allows the use of regenerative blowers where once only positive displacement blowers were used. The blowers have no belts and need no lubrication.

FPZ inverter duty motors can be tied to dissolved oxygen sensors that allow the blower to operate at various speeds. At night when oxygen demands are low, the blower can operate more slowly, producing less air and consuming less power. As oxygen demands increase, the blower speed can be increased. Low noise suits treatment plants near residential areas. 262/268-0180; www.fpz.com.


Energy-efficient MBR

The LEAPmbr from GE Water & Process Technologies offers low life cycle costs, operational simplicity and a compact footprint. The unit reduces energy costs, improves productivity due to greater treatment capacity, and decreases membrane aeration equipment and controls for a simpler design with lower construction, installation and maintenance costs. A reduced physical footprint leads to lower consumption of cleaning chemicals. 866/439-2837; www.ge-energy.com/LEAPmbr.


Advanced biological treatment

The Bio-Wheel and Bio-Brane MBR from H2O Innovation is an advanced approach to biological treatment, producing high-quality effluent. The system eliminates a clarifier filter and achieves almost nondetectable BOD and TSS. The system combines activated sludge and fixed-film in a single biological treatment system, providing compactness, flexibility, efficient use of available biology, and reduced power consumption.

The nonchemical system delivers nutrient removal via nitrification and biological phosphorus removal with fixed-film and carbonaceous BOD reduction. The thin fixed-film provides a stable environment that resists upsets, while the activated sludge provides sufficient oxygen and mixing. The system uses less than 12 hp for flows greater than 75,000 gpd. 418/688-0170; www.h20innovation.com.


Blower packages

CompaK Plus EB 291C and EB 421C plug-and-play tri-lobe blower packages from Kaeser feature Omega Control Basic, variable-frequency drive and reduced current starting. All instrumentation is mounted, piped and wired. Dry contacts are included for output to SCADA. Packages can be remotely started and stopped. Units are available from 25 to 100 hp with flows from 577 to 1,420 cfm at 4.4 psig. 540/898-5500; www.kaeser.com/omega.


Nitrate analyzer

The Hach NITRATAX sc UV nitrate analyzer uses advanced absorption technology, eliminating reagents, sample conditioning and frequent calibrations. With few moving parts, it is simple to operate and maintain for continuous nitrate analysis. It can be used with the same Hach sc digital controller as LDO, pH, ORP, suspended solids, conductivity or sludge level. 800/227-4224; www.hach.com.


Cyclone filtration

The Hurricane filtration system from Harmsco combines cyclonic separation, cartridge filtration and Up-Flow technology. The Up-Flow design prevents air entrapment and rotational flow improves cartridge-load performance. The filter housings are made of electropolished 304 or 316 stainless steel and can be coated to resist seawater or corrosive compounds. Housings are available in a variety of sizes with many filter cartridge options. Built to ASME standards, the system is NSF-61 listed. 800/327-3248; www.harmsco.com.


Inclined screw press

The RoS3Q inclined screw press from Huber Technology offers fully automatic operation. The press uses minimal energy to dewater municipal and industrial sludge and bio-solids, resulting in optimal cake solids, polymer consumption and capture rates. It generates minimized noise and wear due to the low speed of the compacting screw. The rotating auger and wide gap between the screw conveyor and sieve make the unit insensitive to coarse material. 704/949-1010; www.huber-technology.com.


Versatile filter

The Baleen Filter from JDV Equipment can screen from 5 to 500 microns through a combination of high- and low-pressure sprays that dislodge material from the filter screen media, while sweeping away material for collection. Inspired by the baleen whale, the system can be used at any point during the treatment process. 973/366-6556; www.jdvequipment.com.


Submersible mixers

Amamix and Amaprop horizontal submersible mixers from KSB Inc. mix, homogenize and suspend sludge. The Amamix has a tandem mechanical sealing that seals the shaft, while a leak-proof cable entry prevents wicking inside the motor. The pumps have a closed-coupled design, direct-drive motor, and cable plug that will plug and unplug without an electrician. The mixer is resistant to clogging by fibrous material, has long maintenance intervals, and requires minimal spare parts inventories.

Available in multiple sizes, the Amaprop mixer is a low-speed gear-drive submersible mixer/agitator with break-proof propeller. The propellers have diameters up to eight feet, and are configured and positioned for energy efficiency. The system offers hydraulic drive for reduced energy costs, and has a tandem mechanical seal with leakage reservoir to contribute to its three-stage sealing. Both mixers require oil change intervals every 16,000 operating hours or two years. 804/222-1818; www.ksbusa.com.


Closed-loop BNR

The Closed-Loop Reactor (CLR) process from Lakeside Equipment provides biological nutrient removal using nonproprietary designs. As a modified form of the extended aeration complete mix process, the process produces removal efficiencies that meet and exceed those of advanced tertiary treatment processes. BNR configurations are available with in-basin designs for nitrification and denitrification, as well as external selector configuration for Bio-P and Total N removal. 630/837-5640; www.lakeside-equipment.com.


Suspended solids meter

The multipurpose Suspended Solids Meter from Markland Specialty Engineering monitors the concentration of primary, secondary and return activated sludges in open-top tanks, pipelines, SBRs and sand/membrane filters. It can measure sludge too thick for optical methods, or thinner than the backwash from drinking water plants. Using nonradioactive ultrasounds, it requires no approvals. The self-cleaning, low-maintenance sensor is nonclogging, smooth-bore and nonintrusive.

The meter automatically shuts off the desludge pump before sludge becomes too thin, resulting in optimum density for feeding to digesters, belt presses and centrifuges. This enables correct dosing and calculation of solids mass flow. Readings are not affected by color of particulates or fluid. The system can be supplied as an inline spool piece or throw-in style probe. Free testing of samples is available with follow-up report. 905/873-7791; www.sludgecontrols.com.


Recycled permeate process

The Carrousel MD digestion process from Ovivo uses Kubota membrane units to prethicken waste activated sludge. The process creates reuse-quality permeate, achieves thickening up to 4 percent solids without polymers, eliminates decanting, reduces footprint, and provides constant feed operation and custom automation.

The permeate can be recycled to the head of the plant or sent to disinfection. Continuous nitrification and denitrification sequencing reduces nitrate and ammonia, and provides pH control, preventing the dissolution of inorganic phosphorus. Conditions favoring biological phosphorus release and uptake ensure minimal amounts of soluble phosphorus in the permeate. The process produces Class B sludge. 801/931-3000; www.ovivowater.com.


Ammonia treatment

The PRD-AMS process from PRD Tech adds alkalinity to influent wastewater using magnesium hydroxide slurry and biologically treats the ammonia. The process consists of an aerated vessel that uses a Venturi system to increase oxygen transfer efficiency, and uses a proprietary moving biomedia with high surface area to biologically convert ammonia to nitrogen gas. The effluent is monitored continuously for ammonium concentration with automatic controls for alkalinity, pH and dissolved oxygen. With a compact footprint, the process can be operated with minimal operator intervention. 513/731-1800; www.prdtechinc.com.


Compact fan press

The Rotary Fan Press from Prime Solution Inc. simplifies dewatering performance for sludges and slurries using continuous pressure differential technology. With a rotational speed of less than 1 rpm, the unit is portable, enclosed and offers a long service life. Several capacities are available to meet various flow applications. Skid-mounted systems include control panel, feed pump, chemical prep, inline mixing and plant integrated controls. The compact designs can be configured for portability with mobile systems containerized or trailer mounted. 269/673-9559; www.psirotary.com.


Direct-drive rotor

The Floating Brush Rotor from S&N Airoflo combines cup-shaped blades and a spiral design that reduces power consumption. The floating unit easily drops into ditches, lagoons, digesters and stormwater basins, while a direct-drive rotor increases efficiency and reduces maintenance. No adjustment is required for water level changes and the rotor maintains high productivity. Wastewater lubricated bearings increase equipment life and eliminate greasing. 662/455-2804; www.airoflo.com.


Large-volume MBR

The TITAN MBR FE System from Smith & Loveless is a pre-engineered field-erected tankage for large-volume MBR treatment. Submerged in the aeration section, the flat-plate membrane maintains high permeability and flux rates even at peak-day rates. With air scouring to prevent fouling, the unit does not require back pulsing or the associated equipment and chemical costs. The flat-plate membranes experience less wear and tear than hollow-fiber types and can be cleaned in place. Systems come in standard and custom designs with flow capacities from 5,000 gpd to 3.0 mgd. The systems meet effluent requirements of 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.


Portable treatment plant

The on-site portable pilot trailer from WSI International demonstrates different water treatment processes. It comes with a staff that operates the trailer and answers questions. A final report explains the results after the demonstration. The trailer is equipped with mixing chambers, ozone, DAF unit, air compressor, UV, fiberball filter, ceramic membrane, disc filter and spiral membrane systems. The portable treatment plant allows customers to see which system will work best for their application. 303/985-0885; www.wsi-llc.com.


Turbo blower

The AyrJet Series 400 high-speed, high-efficiency single-stage turbo blower from The Spencer Turbine Co. features a direct-drive oil-free permanent magnet motor and variable-frequency drive with PLC controls. With flows to 8,200 cfm and pressures to 15 psig, it handles applications from 300 to 400 hp and includes built-in vibration and temperature monitoring.

All blowers come standard with built-in inlet filtration; externally mounted inlet filters are optional. Higher horsepower in a larger, single blower provides more power at less cost. The blower offers plug-and-play installation, minimal maintenance, oil-free air delivery, and a sound-reducing enclosure. PLC and operator interface terminal (OIT) allow for flow-based, pressure-based or level-based control. 800/232-4321; www.spencerturbine.com.


Torque limitation

The Cyclo 6000 torque limiter drive from Sumitomo Drive Technologies is a grease-filled unit for easy vertical mounting and handles up to 500 percent shock load. The enclosed torque limiter design is built into the gearbox, while a high-precision coil spring provides accurate torque readings. It transmits signals that relay warnings and automatic motor shut-off at specified torque levels. Bidirectional torque setting means instantaneous overload response. An indicator gauge shows the load percentage available against the set torque. The unit extends gearbox life. 800/762-9256; www.smcyclo.com.


Three-stage BNR

The Continuously Sequencing Reactor (CSR) from Schreiber is a biological nutrient removal (BNR) system contained in a single basin. Oxic, anoxic and anaerobic phases occur sequentially. Aeration and mixing occur separately. With full turndown capability, the aeration can be turned off while the CSR applies low-energy mixing. The contents of the basin are mixed as the rotating bridge moves around. Close proximity of suspended retrievable diffuser units to the tank bottom provides localized scouring to maintain solids suspension. The unit requires 2.5 to 3.5 hp/mg. 205/655-7466; www.schreiber water.com.


Membrane cleaning

The 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.meurermbr.com.


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