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Water & Wastewater Treatment

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Water & Wastewater Clarifiers

Table of Contents 2 Water & Wastewater Clarifiers

3 The Monroe Method

4 Circular Clarifiers

6 Tube Settlers

8 Plate Settlers

10 Horizontal Clarifiers

12 Vertical Clarifiers

14 Air Strippers

16 API Separators

18 Oil Recovery Unit

19 Rebuilds and Retrofits

20 Why Monroe Environmental?

Monroe Environmental designs and manufactures a wide range of water and wastewater clarifiers for municipal and industrial use. All of our equipment utilizes conventional gravitational settling technology, and each system can be customized to meet the specific needs of your application.

We’ve been in the water and wastewa-ter treatment business for over 40 years, so we know that all water streams are unique. Monroe can provide jar-testing, analysis, and ultimately recommend the correct system to properly treat your specific water or wastewater stream.

Clarifier Design Laminar Flow Principle – The design of Monroe Clarifiers creates laminar flow conditions and allows gravitational forces to separate the lighter and heavier elements from the fluid.

Oil Recovery – Separated oils, process fluids, and other floatable materials are guided to an accumu-lation area for easy removal and reclamation.

Separated Solids Removal – For Horizontal Clarifiers and API Separators, a drag conveyor may be included to provide continuous removal of settled material from the bottom of the clarifier. For Circular Clarifiers, traditional scraping rakes for primary clarification and thickening, or a single suction tube header for secondary clarification will be an integral part of the Clarifier design.

Chemical Treatment – Monroe Clarifiers can include a pre-treatment process as an integral part of the system. This aids in the separation of the dissolved solids, fine particles, and emulsified oils that tend to remain suspended in water and process fluids.

Construction Materials – Monroe’s manufactur-ing flexibility includes fabricating with a variety of materials:

• Mild and stainless steel

• Polypropylene

• High-density polyethylene

• FRP

• PVC

• And many others

Monroe Systems and Services• Design and manufacture new clarifiers

• Retrofit existing tanks and clarifiers to improve settling efficiency, throughput, sludge collection systems, oil recovery capability, or chemical treatment

• Rebuild worn-out clarifier internals to extend the life of existing clarifiers

• Municipal and industrial applications

• Turnkey systems available

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The Monroe Method

The Monroe Method is all about quality and convenience. It’s our superior way of doing business and it saves our customers time, money, and hassle. The Monroe Method is based upon three main components:

In-house design and fabrication

• Simplifies communication

• Streamlines project management

Shop assembly and testing

• Faster installations – reduces total cost

• No field misfits/engineering

Ongoing support for the life of your equipment

• Start-up training and assistance

• Replacement parts

In-house Design and Fabrication Other environmental equipment suppliers

rely on several companies to bring your system together. They design your equipment and then job out the work to several different manufacturing shops – this wastes time and raises cost. At Monroe Environmental, we manage the entire project in-house, with engineering and manufacturing capabilities under one roof. This saves time, simpli-fies communication, and lowers cost.

Shop Assembly and Testing We fully assemble and test your equipment in

our shop whenever possible so you don’t have to worry about costly misfits on-site. With other suppliers, you could wait around for days or weeks while they re-work and re-fit your equipment in the field. With Monroe Environmental, you know your equipment will fit together perfectly when you install the first time. This reduces installation time and saves you money.

Ongoing Support for the Life of Your Equipment

We pride ourselves on supporting our customers after the sale. If there’s ever a problem with your equipment or you need replacement parts, just let us know. We’ve kept every job on-file with complete documentation since 1970! It’s hassle-free opera-tion for the life of your equipment.

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Circular ClarifiersMonroe Environmental offers unique value that can almost never be realized with competitive clarifier suppliers. Monroe circular clarifiers and their internals are fully engineered, manufactured, assembled, pre-fit, and tested in our own shop. This means that when the equipment arrives for installation in the field, there are no surprises or misfits that will slow down the installation process and drive up cost. Our steel tank clarifiers ship as pre-fit, bolt-together assemblies so there is a minimum amount of field welding required versus other suppliers. For concrete tank clarifier internals, no field welding is required. As a result, our custom-ers realize significant savings in both the time and cost associated with their clarifier installations. Smaller steel tank clarifiers ship as complete turnkey systems, completely assembled and ready for installation and operation.

Municipal Applications• Primary, Secondary, Solids Contact, and

Thickeners for water and wastewater treatment plants

■ Design and manufacture new clarifiers for new facilities or existing plants to increase daily flow capacity

■ Rebuild worn out clarifier internals for existing clarifier tanks

■ Retrofit existing circular clarifiers with parallel plate or tube modules for enhanced separa-tion and flow capacity

Industrial Wastewater Applications• Chemical processing

• Food processing

• Foundry operations

• Glass and plastic manufacturing

• Mining operations

• Oil refineries

• Plating and coating processes

• Pulp and paper mills

• Steel processing

• And many others

Our customers

have come

to rely on the

efficiencies of our

manufacturing

process to deliver

low cost systems

that install quickly

and work properly

the first time they

are used.

Clarifier Rebuilds

Secondary Clarifier before rebuild Secondary Clarifier after installation 130 ft. Clarifier rake fully assembled in Monroe shop

20 ft. diameter Primary Clarifier at WWTP

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46 ft. diameter self supporting Circular Clarifier for separating blast furnace scrubber fines from wastewater at a steel processing plant

Two 8 ft. diameter Circular Clarifiers fully assembled in Monroe shop

6

Tube Settlers

An increase in

water treatment

plant flow rate is

enabled by tube

settlers.

Tube settler modules increase the settling capac-ity of circular clarifiers and/or rectangular sedimen-tation basins by reducing the vertical distance floc particles must travel before agglomerating to form larger particles. The Monroe Tube Settler Clarifier is ideally suited for municipal potable water or wastewater treatment plants, as well as industrial applications. The modules consist of multiple tubular channels sloped at an angle of 60° from horizontal. Monroe Tube Settler modules are typi-cally 2 ft. in vertical height. The tubes are somewhat triangular in shape with each tube having a cross sectional perimeter of about 10 inches.

Water entering the settling zone flows into the bottom of the tubes and out at the top, while particulate matter settles out by gravity to the bottom of the clarifier. This design allows particles to settle more rapidly by achieving laminar flow and decreasing the distance a particle needs to travel before it begins to agglomerate. This rapid settling effect maximizes the effective surface area for settling, thereby minimizing clarifier footprint. An increase in water treatment plant flow rate is also enabled by tube settlers.

Tube Support Structure The Monroe Environmental tube settler support

structure is designed to minimize interference of structural elements with the tube settler modules. The support structure keeps structural members out of the module area. The tube settlers them-selves are made of a lightweight potable grade PVC. In terms of structural support system components, Monroe offers the widest range of materials and coating systems in the industry, including mild steel, stainless steel, FRP, and thermoplastics with the best material selected depending on each specific application. Monroe’s 304L stainless steel design is most common and ideally suited for use at municipal potable water treatment plants. Tube settler modules can also be integrated into existing circular or rectangular clarifier designs to provide increased efficiency.

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As with the Clean Water Plate Settler, flow first passes through a flocculation zone before enter-ing the settling area where the tube modules

are located. Several flocculation mechanisms are available, as well as adjustable overflow weirs and efficient, low maintenance sludge removal systems.

Stainless steel tubular support structure during installation at a potable water treatment plant.

Clean E�uent

Tube Modules

Settling Zone

Sludge(Optional Collection System Available)

Ba�e

Module SupportStructure

V-Notch Weirs &E�uent Launders

Tube Settler

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The Monroe Environmental Clean Water Plate Settler can greatly increase the effective surface area of the sedimentation tanks at potable water treatment facilities. The ground or floor space oc-cupied can be as little as one tenth that required by conventional sedimentation tanks. This is because suspended solids removal in gravity separators depends primarily on the surface area for settling, not the tank depth, and the multiple parallel plates provide a large surface area in a small space.

Monroe uses 304 stainless steel in the construc-tion of its lamella plates and support structures for potable water applications. Tanks are normally manufactured of stainless steel or, in the case of larger units, concrete. This type of clarifier is also applicable to municipal wastewater treatment facilities. Though most commonly used for primary clarification, these units can also be effective in decreasing the MLSS (mixed liquor suspended solids) entering secondary settling tanks when located at the entrance to the secondary settling tank or at the end of the aeration tanks. These units can also be used to increase the design flow of existing treatment plants.

Standard DesignA rectangular tank is typically used in Monroe’s

standard design. Raw water enters through the inlet piping at one end of the tank and passes into the flocculation zone. Paddle wheel type flocculators are employed which use a gentle mechanical stirring to bring suspended particles together to form a larger and more settleable floc. Propeller, turbine, and axial flow impellers might also be used in the case of a rapid mix tank design. At this point, depending on the application, either chemical flocculants or hydraulic flocculation may also be employed. Monroe will design either a horizontal or vertical channel hydraulic flocculator depending on customer requirements.

Flow then passes through multiple inlet channels to the settling zone and proceeds upward through the plates, which are typically spaced between 1 and 4 inches apart and are at an angle close to 55° for potable water applications. Careful attention is paid to the design flow velocity between the plates, in order to maximizes settling capabilities. The effluent passes over adjustable weirs made of stainless steel into stainless steel collection troughs. The sludge that settles at the bottom of the tank is removed through outlet piping by means of pump suction or hydraulic head pressure. Mechanical drag conveyors can also be utilized to provide removal of the collected sludge. Complete electrical controls and monitoring will be provided according to customer specifications.

Custom Engineered SystemsThe Monroe Clean Water Plate Settler serves

as a stand-alone bolt together sedimentation system. However, because Monroe brings complete engineering and manufacturing capabilities together under one roof, customizing is an easy process. Our facility can achieve virtually any variant on the basic design. Also, individual components, such as individual flocculator tanks or individual lamella plate assemblies, can easily be suited to a particular customer’s needs. We can assist in upgrading existing facilities to achieve greater cost efficiency, lower space requirements, or greater flow rate requirements.

Clean Water Plate Settlers

Clean Water

Plate Settlers can

greatly increase

the effective

surface area of

the sedimentation

tanks at potable

water treatment

facilities.

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Flocculation Wells

Influent

Plate Modules

Plate Support Structure

V-Notch Weirs and Effluent Launders

Plate modules installed in a concrete basin at a water treatment plant.

Cutaway showing stand-alone clean water clarifier with flocculation section and modular plates.

10200 GPM Horizontal Clarifier with drag conveyor option40 GPM Horizontal Clarifier with full polypropylene construction

for treating plating wastewater

Ideally Suited For• Chemical processing

• Coolant systems

• Food processing

• Foundry operations

• Glass plant operations

• Industrial waste management

• Metal working

• Oil refining

• Paper making

• Plastic manufacturing

• Plating and coating processes

• Steel processing

• Storm water systems

Monroe Horizontal Clarifiers are specially sized for each application. Monroe Environmental will evaluate your fluid effluent and determine design parameters for your particular installation. Your Horizontal Clarifier will then be constructed to provide the most economical and efficient liquid clarification to meet your needs.

Broad Range of Industrial Capabilities Oil Recovery – Separated oils, process fluids and other floatable materials are guided to an accumu-lation area for easy removal and reclamation. An adjustable overflow weir or a Monroe Oil Recovery Unit can be included to remove these elements.

Separated Solids Removal – Where the dirt load is heavy, a drag conveyor may be included to provide continuous removal of settled solids from the bottom of the clarifier.

Cone bottom construction is sometimes recom-mended for nondraggable solids.

Chemical Treatment – The Monroe Horizontal Clarifier can include a pretreatment process as an integral part of the basic clarifier. This aids in the separation of dissolved solids, very fine particles and emulsified oils that tend to remain suspended in water or process fluids. A chemical treatment tank and/or flocculation chamber can be added to allow pH control and mixing of emulsion breakers and coagulants into the influent before the laminar flow process.

Laminar Flow PrincipleThe unique design of the Monroe Horizontal

Clarifier creates laminar flow conditions and allows gravitational forces to separate the lighter and heavier elements from the fluid.

Normally, industrial laminar flow separation requires settling areas beyond practical space availability in typical manufacturing plants.

Monroe’s design engineers, however, have elimi-nated this problem through the unique capabilities of the Horizontal Clarifier.

Horizontal Clarifiers

Monroe Horizontal Clarifiers In the Monroe Horizontal Clarifier separated particles are required to move only a few inches before reaching an uninterrupted and protected free fall or rise to collection areas. Efficiency is increased and build-up of collected particles is prevented.

Solids Settling

Oils Rising

Modular Laminar Plates

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OptionalFlash Mix Tank

Adjustable Pipe Skimmer

Di�userWall

SludgeRemoval

In�uent

OptionalFlocculation Tank

E�uent

Parallel PlateCartridge Adjustable

Weir

(Left) 600 GPM Horizontal Clarifier with pyramid sludge hoppers

(Below) Top view of a Horizontal Clarifier showing installed parallel plate modules

Clean LiquidOutlet

Tramp Oil Outlet

Modular LaminarPlates

Inlet

SolidsDischarge

OptionalDrag Conveyor

Special Features Wide range of construction materials. Mild steel, special coatings, stainless steel, fiberglass, plastics and other materials are available to meet specific needs.

No moving parts in the clarifier section reduces equipment cost and practically eliminates operating cost when compared with a centrifuge separator.

Easily removable laminar plates. The unique, modular design of the Monroe Horizontal Clarifier allows easy removal of individual laminar plate modules from the clarifier for inspection.

Complete electrical controls to meet customer requirements are available if required.

Horizontal Clarifier Configurations

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Ideally Suited For• Chemical processing

• Coolant systems

• Filter backwash clarification

• Food processing

• Foundry operations

• Glass plant operations

• Industrial waste management

• Metal working

• Oil refining

• Paper making

• Plastic manufacturing

• Plating and coating processes

• Steel processing

• Storm water systems

The Monroe Vertical Clarifier is designed to pro-vide low cost, efficient solids removal from a wide range of waste and process liquids. The inclined plate design allows the total gravity settling area to be as much as ten times more than the actual floor space occupied by the clarifier.

Influent is fed into the clarifier downward through feed channels between the laminar plate sections. As the velocity of the influent decreases near the bottom of the channels, larger particulate settles to the clarifier bottom.

The influent enters the lower area of the laminar plate sections from the channels through side slots. The waste liquid is then distributed across the entire width of the plates, and flows upward under laminar flow conditions. Particulates settle onto the plates and slide down to the clarifier bottom.

The liquid exits the plate sections through weirs at the top that are designed to develop adequate back pressure to maintain balanced flow through the plates. The liquid then flows into effluent chan-nels and out of the clarifier.

• Parallel plate design

• Efficient removal of solids from liquids

• Low space requirements

• Minimum maintenance

• No moving parts in settling area

• Single unit capacities from 1 to 2,000 GPM

Custom Engineered Monroe Vertical Clarifiers are carefully engineered

to meet the specific requirements of each applica-tion. Well proven design criteria assure maximum performance of each clarifier. The design provides for easy field installation, fast startup, and low maintenance costs.

While many installations provide adequate solids

removal without influent pretreatment, optional mixers and flocculator tanks are available to en-hance efficiency when required. Some solids must be flocculated to achieve adequate mass to be effectively removed.

Monroe Vertical Clarifiers are manufactured in two different plate inclinations; the 45° clarifiers are designed for removal of heavy solids while the 55° clarifiers are designed for light solid removal applications.

Vertical Clarifiers

60 GPM Vertical Clarifier for river water treatment

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Optional Flash and Flocculation Tank

Modular Laminar Plates

E�uent

Sludge Removal

In�uent

SludgeRemoval

Optional Chemical Mix Tank and Flocculation Tank

CleanLiquidOutlet

Inlet

Modular SeparatorPlates

ThickenerDrive

Rake Thickener

Special Features Wide range of construction materials. Mild steel, special coatings, stainless steel, fiberglass, plastics, and other materials are available to meet specific needs.

The unique, modular design of the Monroe Vertical Clarifier allows easy removal of individual laminar plate modules from the clarifier for inspection.

A flash mixer and flocculator tank are available pretreatment options.

A rake thickener with geared drive is available for the bottom of the separator tank to increase solids concentration.

Complete electrical controls are available to meet customer requirements.

8 GPM polypropylene unit with chemical mix tank, flocculator, pyramid sludge hopper, and mild steel support structure

425 GPM stainless steel unit with chemical mix tank, flocculator, and thickener options

Vertical Clarifier Configurations

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Air StrippersMonroe Environmental designs and manufac-

tures high-efficiency air strippers for industrial and municipal applications. An air stripper removes volatile gaseous compounds dissolved in a con-taminated water stream and transfers them to an air stream. Clean water from the Monroe stripper may then be sent to a sump or drain as required. Monroe manufactures both Packed Tower Air Strippers and low-profile Sieve Tray Air Strippers. We also manufacture Dry Adsorbers and Packed Bed Scrubbers that can efficiently remove the pollut-ants transferred to the exhaust air stream by the Air Stripper, if necessary.

Ideally Suited For • Water treatment plant removal of VOCs and

odors from potable water

• Removal of many Volatile Organic Compounds (VOCs) and other compounds with high vapor pressure and low aqueous solubility including: benzene, ethylbenzene, toluene, xylenes, ethylenes, and ammonia

• Removal of groundwater contaminants from petroleum fuel leakage

Packed Tower Air Stripper The Monroe Environmental Packed Tower Air

Stripper typically uses a counter-flow design with a cylindrical tower containing a specially designed packing media that provides a large surface area for air/water contact. Contaminated water flows down through the packing while air flows upward. VOCs or other contaminants are transferred from the contaminated water stream to the air stream, which then flows out through the top of the tower. Clean water flows out at the bottom of the tower.

• Larger flow rates of contaminated liquid and lower ratio of air flow to liquid flow compared to sieve tray design

• Lower pressure drop than sieve tray air stripper

• Capacities up to 5,000 GPM of contaminated liquid for a single tower

• Efficiency up to 99.99%

• Single and multiple tower designs

• Single-stage or multiple-stage liquid distributors for contaminated water

• Wide range of packing media including rings, saddles, and structured packing

Sieve Tray Air Stripper The Monroe Environmental Sieve Tray Air Stripper

employs multiple sieve trays to provide a large surface area for air/water contacting. Liquid flows horizontally across a tray while air bubbles upward through holes in the tray. The VOCs are transferred from the liquid phase to the gas phase air. The air flows upward through the holes in the next higher tray until it finally passes out of the top of the stripper. The water flows over a weir down to the next lower tray until it exits as clean water from the bottom of the stripper.

• Capacities to 1,000 GPM for a single unit

• Single and multiple unit designs

• Efficiency up to 99.99%

• Low profile, low height, small footprint

• Trays are easily accessible for cleaning. Best choice when fouling, by mineral deposits or biological growth, is of high concern.

• Uses open non-plugging header design

• Unlimited liquid turn-down

An air stripper

removes

volatile gaseous

compounds

dissolved in a

contaminated

water stream and

transfers them to

an air stream.

View from bottom up through multi-stage sieve tray tower

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Air Outlet to Carbonor Other Treatment

AirInlet

ContaminatedWater In

Clean WaterOut

AccessHatch

SieveTray

MoistureEliminator

Air Outlet to Carbonor Other Treatment

AirInlet

MoistureEliminatorContaminated

Water In

Packing

Clean WaterOut

View through multi-stage sieve tray tower.

Packed Tower Air Stripper Sieve Tray Air Stripper

50 ft. x 13 ft. diameter stainless steel stripping tower for VOC removal at a potable water treatment plant

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API Oil/Water SeparatorsMonroe custom oil/water separators are de-

signed per American Petroleum Institute standards (API) for above and below ground installations.

The Monroe API Separator is designed for the removal of free oil and solids. If the removal of soluble substances is required, Monroe can provide additional treatment equipment or will recommend other Monroe Clarifiers.

Gravity differential settling is used to separate the oil from water. Monroe engineers will evaluate the type and state of the oil and the characteristics of the waste stream to determine the proper design and size of the separator. Oil globule size, specific gravity of the oil and wastewater, temperature and viscosity should be considered. Suspended solids will also be settled from the wastewater and provi-sions of this will be part of the design.

Monroe is able to provide API Separators in large shop-fabricated and assembled units to reduce installation costs. Separators as large as 14 feet wide x 100 feet long can be shipped from our factory in one piece fully assembled.

The basic components of the Monroe Separator include an inlet section with diffusion wall, separa-tor channel, an oil retention baffle and an outlet sec-tion. Depending on your requirements, additional options can include trash screens, a slotted pipe skimmer, surface conveyors, and a bottom drag or screw conveyor for solids handling.

Complete covers of various materials are avail-able including the necessary environmental and safety requirements. These provisions may include a nitrogen blanketing system, carbon filtering to remove hydrocarbons from the blanket gas, exhaust flares and pressure relieving valves and access doors.

Above ground Separators are normally con-structed from carbon steel with corrosion resistant coatings. Below ground Separators are normally fabricated from steel or concrete and may include the additional requirements for containment and leak detection.

Existing API Separators can be upgraded with new internal components. In addition, Monroe parallel plate packs can be added to existing API Separators to increase the effective surface area which will provide increased oil removal and increased wastewater flow capacity.

Special Features • Remove oil from wastewater

• Custom designed for your application

• Separators shipped one piece up to 14 feet wide x 100 feet long

• Mechanical surface skimmer and pipe skimmer available

• Mechanical drag conveyor available

• Vapor covers available with environmental and safety equipment

• Retrofit components to upgrade existing separators

• Monroe Parallel Plate packs to improve oil removal in existing separators

900 GPM API Separator, mild steel construction with drag conveyor, screw conveyor, pipe skimmer, and oil roll. The unit, measuring 60 ft. long x 12 ft. wide x 8 ft. high, shipped from our factory fully assembled.

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Under�ow Ba�e

Optional Pipe Skimmer

Over�ow Weir

Optional DragConveyor

Optional SurfaceSkimmer

Optional Vapor Cover

ConveyorDirection

Di�usionWall

Sludge Removal Pipeor Optional Screw Conveyor

Outlet

Inlet

(Above) 14 ft. x 90 ft. long 105 GPM API Separator with cover, insulation, and aluminum cladding

(Left) 525 GPM API Separator – polypropylene tank construction with non-metallic internals and mild steel support structure

(Right) Non-metallic surface skimmer and drag conveyor components inside API Separator

API Separator

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Oil Recovery UnitThe Monroe Oil Recovery Unit is heavily con-

structed for industrial applications and consists of an endless belt, an electric motor and drive unit and a complete enclosure. The belt is suspended from a specially designed driven pulley, with the lower portion immersed in an oil supporting liquid.

As the belt descends into the liquid, the floating oil adheres to both sides of the belt. Self-adjusting wipers mounted in a staggered position wipe the oil from the belt. The recovered oil drains into a trough for deposit into a storage tank or containers.

The Monroe Oil Recovery Unit operates unat-tended in any area of tranquil oil accumulation. It will continuously recover floating oil in a condition that permits disposal or reclaiming for other industrial purposes.

Many different industries can prevent water pollution by recovering oily waste with a Monroe Oil Recovery Unit. Even the lightest oils from food processing can be easily removed.

Totally Enclosed Drive Unit The Monroe Oil Recovery Unit features a totally

enclosed drive unit mounted inside the housing. The compact design provides easy drive access, excellent drive protection and maximum person-nel safety. The entire drive unit is protected from weather, dirt and contaminants.

Easy Maintenance The Monroe Oil Recovery Unit assembly is

self-adjusting to compensate for wear, and is provided with a full-width hinged door for easy access to all working components. The endless belt can be removed for repair or replacement without disassembling the unit, minimizing maintenance. The wiper assembly is self-adjusting to compensate for wear. Constant pressure and alignment with the belt are assured.

Automatic Belt Tracking The Monroe Oil Recovery Unit incorporates a

specially designed drive pulley that eliminates belt

tracking problems. Unlike other recovery units, periodic tracking adjustments are not required on the Monroe unit. This unique feature eliminates complicated adjustable bearing assemblies and their associated maintenance procedures.

Special FeaturesHeavy gauge steel construction with welded seams and lifting hooks provides rugged durability. Special construction materials and coatings are also available.

Large, easy to open access doors for all serviceable areas.

Heated enclosure. For use in extreme cold, the 12" & 24" model can incorporate insulated panels and an electric infrared or steam heater.

An optional controller is available for variable speed operation.

Complete electrical controls to meet customer requirements are available.

Ideally Suited for Use In –• Auto manufacturing

• Chemical processing

• Food processing

• Metal processing

• Oil refineries

• Steel mills

• Storm water systems

• Wastewater treatment

For Recovery of –• Bunker “C” oils

• Cooking oils

• Hydraulic oils

• Lubricating oils

• Machine oils

• Mineral seal oils

• Other organic and synthetic fluids

Oil Recovery Unit

• Superior belt type oil skimmer

• Removes tramp oil from process liquids

• Prevents oil pollution

• Recovers valuable oil products

• Minimum maintenance

• Fully enclosed design

SkimmingBelt

Self-adjustingWipers

Tramp OilOutlet

19

Rebuilds and Retrofits

Clarifier Rebuilds Rebuilding and replacing the internals of a con-

crete or steel tank clarifier is a quick, cost-effective solution versus constructing an entirely new system. The clarifier tanks often maintain a suitable operating condition while the skimmer arm, center well, drive assembly, and sludge rakes corrode and wear beyond an acceptable level.

The benefits of a Monroe Environmental Clarifier Rebuild are straightforward and simple:

• Faster installations – reduced total cost

• Minimal clarifier downtime

These benefits are realized because we are able to fully assemble clarifier equipment in our shop. We inspect and test every bolt, weld, and panel to make sure that each component fits together perfectly before it is shipped to site and installed. This key step can be the difference between a few days of simple installation or weeks of fitting, engineering, and re-working equipment in the field. By reducing installation time, projects can often be completed ahead of schedule with minimal labor cost.

Monroe offers a variety of rebuild and retrofit services for every type of Monroe Clarifier system. We can sup-ply completely rebuilt systems, modified components for retrofit, or replacement parts for existing systems.

Drag conveyor chain, flights, and sprockets

Circular clarifier internals for existing 20 ft. concrete tank

HD polyethylene parallel plate cartridges for existing clarifier retrofit

The Monroe MethodThe Monroe Method is our superior way of

doing business that saves our customers time, money, and hassle. It’s based upon three main components:

• In-house Design and Fabrication

• Shop Assembly and Testing

• Ongoing Support for the Life of Your Equipment

Unlike many other environmental equip-ment suppliers, Monroe Environmental brings engineering and manufacturing capabilities together under one roof. This simplifies com-munication and lowers cost. The equipment we design is built in our own shop, which allows us to control the quality of our products and ensure timely delivery to our customers. Typically, we fully assemble and test the equip-ment before it ships to ensure that every piece fits together perfectly. This eliminates costly misfits and engineering in the field. In addi-tion, we fully support our customers after the sale with training and replacement parts. Our many repeat customers can attest that Monroe provides high-efficiency systems and service for the long term. It’s simply how we do business.

ExperienceMonroe Environmental has produced thou-

sands of high-quality, low-maintenance pollu-tion control systems for a variety of applications worldwide. We have many standard designs that can be tailored to meet our customers’ specific needs. Our ability to manufacture with several different materials in our shop ensures that our customers get the perfect system for their specific application every time.

Monroe Environmental is a registered ISO 9001 and ISO 14001 company.

Why Monroe Environmental?

© 2011 Monroe Environmental Corporation 05/11

Registered ISO 9001 and ISO 14001

810 West Front St.Monroe, Michigan 48161 USAPhone: 1-800-992-7707 or 734-242-7654 Fax: 734-242-5275www.mon-env.com