Environmental Equipment for the
 Water & Wastewater Industries





MENSCH SEVERE DUTY

The Mensch Severe Duty™ Bar Screen is well known for its versatility in a wide array of pumping station and head works projects, along with setting the standard for robust design in the most severe waste water, combined sewer, and storm water applications. You cannot find a more durable screen on the market. Mensch Bar Screens are custom designed and fabricated to meet the demands of the environment in which they are placed. All frame, bar rack, and drive components are sized according to severe duty design standards that ensure every screen performs to the full satisfaction of the client in every application. There is no comparison in quality and service after the sale. With over 2000 installations operating in the United States alone, Vulcan is the leader in severe duty bar screen applications.

VMR MULTI-RAKE SCREEN

Since 1978, Vulcan has been a leader in manufacturing quality wastewater equipment. The VMR Multi-Rake Screen continues this tradition of excellence, incorporating many of the same features found in our Mensch Severe Duty™ Bar Screen. Coupling these tried and true features with Vulcan’s own UL approved fully automatic and multiple speed controls produces quick and efficient screenings removal. Designed for use in high screenings volume applications, the VMR Multi-Rake Screen can efficiently remove large amounts of screenings with continuous operation. The versatility of the VMR Multi-Rake Screen makes it ideal for special applications of extreme channel depth and severe screen blinding. Heavy duty components used in the VMR Multi-Rake Screen ensure a long and productive service life even under the most severe conditions. The VMR Multi-Rake screen is an automatic, self-cleaning mechanical bar screen designed for tough primary and secondary screening applications.The VMR Multi-Rake Screen can be customized for new construction as well as existing channels.

MODEL VKR KNUCKLE-RAKE BAR SCREEN

The VKR Knuckle-Rake Bar Screen is a budget and maintenance friendly screen intended for many years of care-free service. The VKR Screen is an automatic, self-cleaning mechanical bar screen customized for existing and new construction with bar openings 1/4-inch and larger.So what’s different? The Model VKR Knuckle-Rake Bar Screen uses a unique knuckle chain link that only bends in one direction. This allows engagement of the rake teeth into the bar rack by the knuckle link design forming its own lower turn-around without a sprocket or guide rail system in the flow. The knuckle link design allows the rake heads to disengage from the bar rack should a large object be encountered or an object is lodged in the bar rack. However, to ensure an adequate force still exists to dislodge material in the bar rack, Vulcan placed a high level of importance on the link design. For this reason, Vulcan casts the links to weigh 6 pounds; an improvement of 33 percent over the competition. This is extremely important for a screen that relies on the weight of the links and rake heads to maintain rake head engagement into the bar rack. We want the rake heads to disengage to remove large material, but we also want to ensure tooth penetration doesn't suffer when blinding occurs. Each rake head is provided with rake teeth so that every rake head engagement cleans the three sides of the bar rack bars exposed to the screenings. No flat head “staging” scraper used (or needed). Rake head shapes control where the screenings end up. VKR rake heads are formed with a scoop shovel shape to contain the screenings collected from the bar rack. That way, screenings are kept on the rake head until the rake wiper removes them automatically. This reduces the amount of screenings falling back into the flow or onto the operating floor.

MODEL ESR STAIR SCREEN

The Model ESR Stair Screen is an automatic, self cleaning, fine screen for primary, secondary or sludge screening in municipal and industrial sewage treatment installations. The screens are also ideal for industrial applications such as slaughterhouses, tanneries, breweries, and paper plants. The design of the Model ESR Stair Screen allows for easy installation in new and existing facilities without channel modification. With a maximum setting angle of 57º, the Model ESR Stair Screen has a compact overall footprint. The side frames of the Model ESR Stair Screen are constructed of formed stainless steel plate having a thickness of 0.24” (6 mm). The screening elements (aka lamellas) in the screening area are stainless steel. The lamellas in the transport area can be stainless steel or a corrosion resistant, UV stabilized synthetic material, depending on the overall height of the screen. The drive system consists of a gear reducer, motor, and a dual chain transmission system with automatic chain tensioning devices. To prevent corrosion, ease maintenance and ensure years of reliable service, the drive system is located completely above the maximum water level, and the gear reducer and motor are encapsulated away from the corrosive atmosphere of the channel. All moving parts of the drive system are protected by removable enclosure panels. The screen enclosure above the channel are equipped with removable panels to provide safe operation and reduce odor.

LIQUI-FUGE LFP PERFORATED ROTARY DRUM SCREEN

The Liqui-Fuge LFP, Perforated Drum Screen is an automatic, self-cleaning fine screen for a variety of applications from primary to membrane screening in municipal and industrial sewage treatment applications. This latest rotary drum screen from Vulcan Industries is specifically designed for protecting secondary and tertiary wastewater treatment systems. While other treatment technologies including MBR, IFAS and MBBR systems are fouled by hair, fibers and small particles, the fine opening perforated media of the LFP can effectively remove those materials in normal operation. The Liqui-Fuge LFP is designed to accept pumped flow and is internally-fed. The Liqui-Fuge LFP consists of a drum of perforated media, internal and external spray system, flow distribution tray, support structure with trunnion wheels, drain pan (when required), removable enclosures and a drum drive system. The drum drive system consists of a gearmotor and a reliable, smooth running cog belt drive that eliminates chain maintenance. All wetted parts and the support structure are constructed of either 304 or 316 stainless steel.

LIQUI-FUGE LFS WEDGE-WIRE ROTARY DRUM SCREEN

The Model LFS Liqui-Fuge RDS, rotary drum screen is an automatic, self-cleaning fine screen for primary screening in municipal and industrial sewage treatment applications. The screens are also ideal for industrial applications such as slaughterhouses, tanneries, breweries and paper plants. The Liqui-Fuge RDS is designed to accept pumped flow and is internally-fed. The Liqui-Fuge RDS consists of a wedge-wire drum, internal and external spray system, flow distribution tray, support structure with trunnion wheels, drain pan (when required), removable enclosures and a drum drive system. The drum drive system consists of a gearmotor and a reliable, low maintenance synchronous drive belt. All wetted parts and the support structure are constructed of either 304 or 316 stainless steel.

MODEL SS STATO SCREEN

The Model SS Stato Screen is a non-mechanical screening device for separating solids from liquids. Because there are no mechanical parts and the unit requires no power, these screens can be installed with minimal capital investment. With a wide range of uses the Stato Screen is ideal for municipal waste water and industrial applications. Available in 304 or 316 Stainless Steel with flanged inlet and outlet pipes. Hinged enclosures, extended discharge chutes and spray systems are available as optional features.

MODEL EWP WASHING PRESS

The Model EWP Washing Press is a spiral press used to wash organic matter out of screenings material. The Washing Press washes, dewaters, compacts and transports screenings to a conveyor, container or other suitable receiving device. The Washing Press consists of a press body with separate washing and dewatering sections, hollow shaft spiral, axial thrust bearing (see photo on left), gear reducer and motor, drain pan, washwater spray connections and sequencing valves. The press body is constructed of stainless steel. A wedge wire drain constructed of individual profile bars is mounted on the bottom of the press and extends from the inlet hopper through the washing section. The wedge wire, with 2 mm spacings, guarantees clog-free drainage of the washwater, while ensuring screenings capture. The spiral, of alloy steel construction, is welded to the hollow shaft. The hollow shaft contains perforations located in the washing zone to introduce washwater to the screenings from the inside out. A nylon brush is attached to the trailing edge of the spiral to ensure debris is thoroughly removed from the drainage area. The drain pan is constructed of stainless steel, and is located directly under the press body. A flushing nozzle periodically rinses the drain pan. Sealed with a gasket, and secured with a latching system, the drain pan is easily removed for service.

MODEL ESP SCREW PRESS

The Model ESP Screw Press consists of an axial thrust bearing with a stainless steel body; inlet hopper; wedge-wire drain; substantial, precision machined shafted spiral; press housing with compression zone; flushing nozzle; press water drain pan and drive assembly. The shafted spiral is cantilevered off the thrust bearing, and does not rest in the housing. This eliminates metal-tometal contact during operation. The profiled bars used in the construction of the wedgewire drain allows for greater flow than perforated drains and helps to prevent blinding. A nylon brush is affixed to the outside edge of the spiral to aide clearing the drain even when greasy material is present.

MODEL TF SHAFTLESS SCREW CONVEYOR

The Model TF Shaftless Screw Conveyor is utilized for the transport of screenings, grit or sludge in municipal and industrial wastewater treatment applications. The conveyor body can be constructed of 304 or 316 stainless steel. The shaftless screw is available in high-strength alloy steel or stainless steel. The screw conveyor utilizes a fully enclosed U-trough with removable covers. The conveyor body is modular and custom-built for each application. Multiple inlet hoppers can be provided to allow solids from multiple sources to be accepted. UHMW polyethylene liners are mounted in the bottom of the U-trough and fully support the shaftless screw along its length. For screenings applications, a compaction head can be provided on the discharge end of the conveyor to dewater and reduce the overall volume of screenings. A water flushing system is provided as an integral part of the compaction head to ensure that it remains clear of debris.

MODEL ESK GRIT CLASSIFIER

The Model ESK Grit Classifier consists of a stainless steel sedimentation tank fitted with flanged inlet and outlet connections, support legs, baffled sidewall with scum board, integrated U-trough with replaceable non-metallic liner, a shaftless spiral and a gear motor drive. The tank is fitted with covers to fully enclose the process liquid and sediments, and a ball valve is installed at the bottom of the tank for draining. Grit cyclones are also available as an integral part of the classifier. Cyclones allow grit classifiers to receive higher flows.

MODEL ESW-SRW GRIT WASHER

The Model ESW-SRW Grit Washer is used to wash sediment taken from a grit chamber in a sewage treatment plant. The Grit Washer washes and dewaters the sediment and transports the resultant sand particles to a container or conveyor while the organic matter and wastewater is reintroduced into the flow stream. The Grit Washer consists of a conical shaped tank with support legs, an internal overflow weir with integral drain pipe, mechanical propeller, discharge conveyor with spiral, gear reducer and motor, washwater headers, air headers and pneumatically operated isolation valves. The tank, overflow weir and discharge conveyor body are constructed of stainless steel. The spiral is shaftless and is constructed of alloy steel. The drive is mounted on the top of the discharge conveyor and the spiral rests on a replaceable liner inside the conveyor so there is no need for a lower bearing.



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