Trailer-mounted press

The Bright Technologies 1.7-meter trailer-mounted belt filter press system with folding conveyor and operator walkways can service multiple sites. Easily transportable and quick to set up, it needs no special lifting equipment. Options include a stainless steel frame, rollers and pans. Units can be customized to particular applications. 269/793-7183; www.brightbeltpress.com.

  Dry chemical feeder

The VF-100 dry chemical feeder from Eagle Microsystems has a rugged direct drive mechanism and accepts feed rates from 0.05 to 50 cubic feet per hour. Feed rates are accurately controlled with an electronic speed control and a mechanical design that eliminates pulleys, belts, chains, sprockets, and gears. The feeder is made of stainless steel and has a maintenance-free design that needs no lubrication. 610/323-2250; www.eaglemicrosystems.com.

  Screw press dewatering skid

FKC skid-mounted dewatering systems can be set up strictly for dewatering or can also be used to heat-pasteurize biosolids while dewatering to achieve Class A product. In this process, lime is added before dewatering to raise the pH to 12 in a separate agitated tank. The liquid biosolids are then pumped with polymer to the flocculation tank on the skid. Flocculated biosolids overflow from the tank into the rotary screen thickener and are then gravity-fed into the screw press, where steam from a small boiler is injected, heating the biosolids to meet the time and temperature requirements. 360/452-9472; www.fkcscrewpress.com.

  Container filter

Sludge Mate container filters from Flo Trend Systems can dewater wastewater and water treatment plant sludge. They are available in roll-off, trailer mounted and tipping-stand-mounted styles. Capacities range from 5 to 40 cubic yards. 713/699-0152; www.flotrend.com.

  Rotary press

The completely enclosed rotary press from Fournier Industries stops odors and can be expanded from one to six channels to accommodate increased flows. Sludge dosed with polymer passes through a variable-speed flocculator to improve settleability. It then enters a circular dewatering channel that slowly rotates and uses backpressure to dewater material through fine mesh screens on both sides of the channel. Dry cake drops to a collection bin or is conveyed away. Once dewatering is complete, the press goes through a 5-minute wash cycle. 418/423-4241; www.rotary-press.com.

  Shafted spiral compactor

The ScrewpactorHD heavy-duty shafted spiral compactor from Headworks International uses robust spiral high-torque and sealed double-thrust bearings. The 5 hp motor and 3/4-inch spiral compacts inorganic solids. The low-profile conveyor/compactor is 6 feet long and 3 feet wide and can handle about 105 cubic feet per hour. It is manufactured from grade 304 or 316 stainless steel (the shafted spiral is made of alloy steel). 713/647-6667; www.headworksinternational.com.

  Anaerobic digestion system

The High Solids Anaerobic Digestion (HiSAD) System from Infilco Degremont uses a two-stage process to treat material at 20 percent solids or higher without mixing, keeping operations and maintenance costs low and improving return on investment. The system is resilient to changes in feed composition. 804/756-7600; www.degremont-technologies.com.

  Vortex impeller pump

The S4VHL 4-inch hydraulic-drive vortex impeller pump from Hydra-Tech Pumps offers 3-inch solids handling and head capabilities up to 210 feet. It is designed to handle wastewater and sewage, and will fit through a 20-inch-diameter manhole. Applications include sewer bypass into force mains and general transfer of solids-laden fluids. It is capable of flows up to 750 gpm. It can be used where electric power is hazardous or impractical, and is available in both aluminum and ductile iron versions. 570/645-3779; www.hydra-tech.com.

  Online grit management

The Advanced Grit Management online program from Hydro International helps enable removal of 85 to 95 percent of all grit entering a wastewater treatment plant. It helps technicians understand grit characteristics and behavior, then applies sedimentation theory and sound engineering principles to design a system. It provides a clearinghouse for science-based information to help engineers, operators and owners select the best solution. 866/615-8130; www.advancedgritmanagement.com.

  Inline twin shaft grinders

Taskmaster inline grinders from Franklin Miller use a twin-shaft mechanism to quickly reduce sewage and sludge solids to fine particles in pipelines. A drop-in housing allows for removal of the working components for maintenance. One-piece cutter cartridges replace individual cutters and spacers, increasing durability and resisting cutter and spacer cracking. The units have two counter-rotating stacks that intermesh at close clearance to shear and shred solids. The output is easily processed by downstream equipment. Units are available for 4- to 24-inch pipes. 973/535-9200; www.franklinmiller.com.

  Rotary drum thickener

IFT rotary drum sludge thickeners from IPEC Consultants consist of a cylindrical drum with a progressive series of screen elements. The drum rotates on four wheels mounted on a structural housing. The smallest openings screen the influent sludge, followed by coarser elements as the sludge thickens. Sludge containing 0.5 to 3 percent solids can be thickened to 3 to 15 percent, depending on the type of sludge. 800/663-8409; www.ipec.ca.

  Wastewater screen

The Bandscreen Monster from JWC Environmental removes solids down to 2 mm and cleans screenings to reduce disposal frequency and cost. The inside-out flow captures solids such as rocks, sticks, plastics and trash on the inside loop and ensures that they never contact the downstream portion of the screen. After the traveling panels lift the solids to deck level, a wash bar system flushes them into a disposal chute. The perforated panels are available with 2, 3 or 6 mm openings. 800/331-2277; www.jwce.com.

  Skid-mounted filter press

Kompress skid-mounted belt filter press systems from Komline-Sanderson are available in 1-, 1.5-, and 2-meter versions with feed pump, polymer system, control panel, belt washwater pump, interconnecting piping, drain pan, and air compressor or hydraulic power unit for belt steering and tensioning. The system only needs to be off-loaded, anchored in place, and connected to utilities. It is available in two- or three-belt designs and can achieve feed rates above 200 gpm. 800/225-5457; www.komline.com.

  Biosolids drying process

The SOLIA drying process from Kruger USA couples air drying and aerobic fermentation. Solar radiation along with a SOLIAMIX automated windrow turner helps water evaporate from the sludge for subsequent removal from the greenhouse. The turner keeps the biosolids aerated and promotes digestion, which produces heat to aid the drying process. Greenhouse drying can reduce the amount of sludge by 60 to 80 percent. 919/677-8310; www.krugerusa.com.

  Side-discharge spreader

The Knight ProTwin Slinger side-discharge spreader from Kuhn North America uses an even, controlled spread pattern and optional scale system to provide precise application of biosolids. The lower discharge pan seals the discharge area during road travel, keeping material off the road and blocking public view. It guides material outside the tire tracks while spreading, helping keep the tires clear. The pan is hydraulically controlled by the operator from the truck cab. 608/897-2131; www.kuhnnorthamerica.com.

  Septage acceptance plant

The Raptor Septage Acceptance Plant from Lakeside Equipment removes debris and inorganic solids from tank sludges. The heavy-duty unit incorporates the Raptor Fine Screen for screening, dewatering and compaction. Accessories include grit and rock removal, security access systems and automated accounting systems. With the addition of aerated grit removal, the system is offered as a complete plant. 630/837-5640; www.lakeside-equipment.com.

  Screw press

The ACAT screw press is available in North America through Kusters Water, a division of Kusters Zima Corporation. It provides slow rotational speed, low maintenance, low noise level and low energy consumption. 864/576-0660; www.kusterswater.com.

  Decanter centrifuge

The horizontal, solid-bowl (decanter) centrifuge from Noxon North America has a variable-frequency drive design that supplies fully electric drive with the same torque-generating characteristics as units with hydraulic backdrives. It can dewater a wide variety of sludges and slurries to cake solids concentrations with high capture efficiency. Materials of construction include high carbon (50W) steel and stainless 304 and 316, protected with tungsten carbide coatings. 416/843-6500; www.noxon.com.

  Discharge bagging system

The Longofill closed continuous bagging system from Paxxo connects to the discharge point of machines used to move, dewater or compact screenings and grit. Material is deposited into the continuous bag, which helps to contain odor and control spillage. Odors and materials are trapped inside, reducing environmental and health issues. 770/502-0055; www.paxxo.com.

  Rotary fan press

The Prime Rotary Fan Press from Prime Solution simplifies dewatering by using continuous pressure differential technology. It provides slow rotation. 269/694-6666; www.psirotary.com.

  Micro carbon sludge reducer

BIO ENERGIZER micro carbon complex from Probiotic Solutions reduces sludge, odor, BOD/COD, FOG and operational upsets. It biochemically oxidizes sludge in lagoons and reduces the lagoon sludge blanket without draining, drying, dredging, handling or hauling. It increases volatile solids destruction and improves decant volume and settleability for greater digester and reactor capacity. 800/961-1220; www.probiotic.com.

  Washer/compactor

The Schreiber Washer/Compactor washes out organics and dewaters screenings in a batch sequence. Screenings enter the top of the unit and are agitated by a rotating shaftless screw, releasing entrained organic material. The organics in suspension drained back to the treatment stream. The washed screenings are transferred over a barrier into the compactor section, where they are dewatered. Systems come in three sizes with inlet widths from 3 feet 8 inches to 9 feet 10 inches and screenings capacities from 19.5 to 135 cubic feet per hour. 205/655-7466; www.schreiberwater.com.

  Screw press dewatering

The Schwing Bioset Screw Press does not need to suspend dewatering for the cleaning cycle. Results are similar to high-speed centrifuges with low energy and maintenance costs. Features include low speeds and automated control, robust construction, stainless steel wetted parts, a split-screen casing to simplify screw removal and minimize footprint, a perforated screen that allows for tight tolerances, a sealing lip and screen that can be replaced with the screw in place, and low washwater requirements. 715/247-3433; www.schwingbioset.com.

  Liquid chemical metering skid system

Pre-engineered liquid chemical metering skid systems from seepex are available with or without controls. They include progressive cavity pumps that have low operating costs and long life, ensure precise metering without pulsation or vapor lock, and are protected from dry run and overpressure. The systems accommodate flows up to 100 gph and pressures to 350 psi. 937/864-7150; www.seepex.com.

  Screw centrifugal pump

The Triton screw centrifugal pump from Vaughan Company uses a high-efficiency non-clog design. Its open-channel impeller handles thick sludges, large or stringy solids, shear-sensitive fluids and delicate or highly abrasive materials. Features include steep performance curves, heavy-duty power frames, back cutter system and the flushless mechanical seal design to eliminate water flushing. 888/249-2467; www.chopperpumps.com.

  Self-cleaning fine screen

The CleanFlo Monoscreen self-cleaning fine screen from WesTech Engineering suits a wide variety of wastewater and process water treatment applications. Using a reliable blade and drive system, it creates a progressive step motion that evenly distributes screenings while minimizing water-level surges. The result is a screenings capture ratio of 82.5 percent. 801/265-1000; www.westech-inc.com.

  Sludge pretreatment system

The OpenCEL sludge pretreatment system from US Peroxide enhances anaerobic digestion by pretreating waste activated sludge with focused pulsed technology. A rapidly pulsing, high-voltage beam is focused on the sludge as it passes through a cylindrical chamber. The pulse disturbs the polar bonds in the cell membrane molecules, causing countless tiny pores to form in the membrane. As the cell exits the chamber, osmosis causes the cell contents to comingle with the surrounding material, making the cell contents bioavailable. 847/835-7418; www.opencel.com.