EQUIPMENT CATALOG

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WSG & SOLUTIONS, INC.

WSG & Solutions, Inc. (Wastewater, Screening, Grit & Solutions) is your OEM

source for Screens and Grit Systems that utilize the proven Link-Belt® and Rex®

technologies and designs for all municipal and industrial wastewater applications.

We are also the exclusive North American distributor of CSO products designed

and manufactured by CSO Technik and Biogest.

WSG & Solutions, Inc. purchased the entire Headworks products business from

Siemens Water Technologies and is located in Montgomeryville, Pennsylvania.

WSG & Solutions, Inc. is the market leader regarding supply of Link-Belt®, Rex®

and CSO municipal and industrial wastewater, screening and grit products

previously provided by Link-Belt, FMC, USFilter, Envirex Products and Siemens

Water Technologies.

The information contained in this document is designed to answer any questions

you may have about WSG & Solutions, Inc. and the company’s offerings.

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What does WSG & Solutions, Inc. do?

WSG & Solutions, Inc. designs, manufactures and supplies screening, grit and

CSO systems. Our engineers utilize the latest in computer solids modeling,

FEA and computational fluid dynamics programs in our innovative designs,

and our operations group teams highly qualified fabrication shops with

inspections to insure delivery of the highest quality products possible. We also

offer full field service support and aftermarket parts for all our products. See

our complete product line shown on page 9 of this document.

What is the company’s mission statement?

WSG & Solutions, Inc. was founded with the fundamental goal of continuous

customer satisfaction in order to enhance its market leader position for the

supply of Link-Belt, Rex and CSO products for the municipal and industrial

wastewater markets. The entire organization is 100% committed to continuous

improvement and delivering first class quality products, services, support and

competitive product pricing and doing what's best for our valued customers.

Aftermarket Services

We can provide Original OEM Parts and Design/Retrofit assistance for any

aftermarket requirement.

We are the exclusive owner and source of all Screening and Grit Aftermarket

parts and Products previously supplied by Link-Belt®, Rex®, USFilter, and

Siemens Water Technologies and have historical records at our facility for

virtually all these Screening/Grit Products.

- Consulting and design expertise for upgrades to your existing products.

- Stock of widely used parts for quick delivery.

- Rebuilds of existing equipment.

- Retrofits to the latest technology.

- Original OEM parts at competitive prices.

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AFTERMARKET PARTS & SUPPORT

When you need genuine Link-Belt®, Rex® or CSO products

replacement parts, Go right to the source

Your link to genuine replacement parts.

Ordering is easy. Just contact Patty Becker at 1-866-353-7084, Ext.

3001 or 267-638-3001 and ask for genuine Link-Belt®, Rex® or CSO products replacement parts.

WSG & Solutions, Inc. supplies original replacement parts for all Link-

Belt®, Rex® and CSO products.

WSG & Solutions, Inc., is your single source for original replacement

parts.

WSG & Solutions, Inc.

160 Commerce Drive, Suite 100

Montgomeryville, PA 18936

FAX: 267-638-3081

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HEADWORKS INTRODUCTION

We have seen and solved just about every imaginable headworks problem in thousands of installations all

over the country. To solve your problem, we can draw on the broadest range of tested technologies

available. We sell everything from portable septage screens to massive bar screens, grit collectors, grinders,

and compactors. A brief outline of these technologies follows.

Our comprehensive collection of head-works technologies involves screens which range from:

-Widths of 1 to 30 ft.

-Depths to 200 ft.

-Chain and Rake, Cable, Catenary, Reciprocating Rake and Continuous Self-Cleaning Coarse and Fine.

-All of our screening systems can be supplied with a screenings compactor.

Our grit separator systems include many basic designs with various options:

- Chain and Scraper

- Simple Screw Type

- Large Chain and Bucket

- Vortex type

- All of these grit separators can be supplied with Grit Washing systems.

SCREENING SYSTEMS

We have entered an era of wastewater reuse and sludge recycling. Screens are no longer used just to protect

the downstream equipment, but are now critical to the removal of plastics from the wastewater stream, and

therefore, the sludge. With fine screening the undesired removal of organics and fecal matter is also a

concern. Therefore, washing and dewatering of the screenings is critical to maintaining a good screening

process.

Screens are classified for the most part as: Coarse Screens, Fine Screens and Micro Screens. (Increasingly,

treatment plants use a combination of coarse screens and fine screens.)

Coarse screens, with openings over 6 mm (1/4”), remove large solids, rags and debris from the wastewater.

Fine screens, with openings of 1.5 mm to 6 mm, are used to remove smaller materials and may significantly

increase downstream liquid and sludge processes, particularly in systems without primary treatment.

There are many types of mechanical bar screens, some of which are listed below:

- Chain and Rake Bar Screens

- Cable Operated Bar Screen

- Reciprocating Rake Bar Screens

- Catenary Bar Screens

- Continuous Self-Cleaning Screens

- Screw-type Screens

- Rotary Drum Screens

The quantity of screenings material that will be removed from the waste stream varies significantly, depending

on the opening that is established between the screening bars. Also, flow characteristics of the municipality

and type of collection system will affect the amount of screenings that are collected.

The quantity of screenings removed will also be affected by the length and slope of the collection system. The

use of multiple pumping stations may reduce the size of the organics received at the headworks. It can be

assumed that the volume of screenings removed may be greater with a short, gently sloping collection system

with little pumping and low turbulence. This difference stems from disintegration of solids exposed to long

periods of turbulence. The impact of turbulence will be especially significant for smaller bar screen openings.

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Composition, as well as volume, affects the disposal of screenings. Coarse screenings consist of rags,

sticks, leaves, food particles, bones, plastics and stones. With smaller openings (6mm and under)

cigarette butts, fecal matter and other organic matter may be included in the screenings.

Screenings normally contain about 10 to 20% dry solids and will have a bulk density of between 40 and 70

lb./cu. ft. Openings of 19mm, or smaller, should adequately protect downstream equipment. Smaller

openings between the screen bars will produce larger volumes of solids removal and can offer a greater

degree of protection for downstream equipment. (Caution should be used when selecting openings smaller

than 13mm for plants served by gently sloping gravity collection systems because of the potential for the

removal of unwanted fecal matter.)

Proper bar screen selection and sizing will insure satisfactory mechanical and process performance and

could increase the efficiency of downstream equipment and processes in the treatment plant. Criteria

usually used to determine the type of screen best suited for a particular application are as follows:

- Particle size and volume of screenings to be removed

- Flow variations and influent characteristics

- Minimum and maximum water levels

- Plant hydraulics and allowable headloss

As with most types of mechanical equipment, maintenance requirements and reliability are very important

aspects of design and equipment selection. When called upon to operate, the bar screen should be

expected to perform efficiently and effectively with a minimum of operator attention.

On the basis of operation and maintenance considerations, two narrow bar screens are recommended

over a single, wide screen. When two or more screens are used, the screening channel and screening

equipment should be designed so that one screen can be taken out of service without adversely affecting

the operation of the facility or the remaining screen.

Screen headloss and the volume of solids removed increases dramatically as the size of the screen

opening decreases. Therefore, the application of a fine screen requires a careful review of the plant

hydraulics and processes. This review is especially important in a retrofit installation where a coarse bar

screen is being replaced by a fine screen.

Large quantities of solids removal, attributed to fine screens, may result in a reduction of BOD levels by

5% to 25%, TSS by 15% to 30%, grease by 30% to 50%, and up to 90% of all floatables. If recognized by

the Engineer, this reduction in BOD could be reflected in the downsizing of downstream processes.

The various types of fine screens may be categorized and differentiated by the way they are positioned

relative to the flow, the screening medium used, or the cleaning mechanism employed.

When locating a screen the engineer needs to consider the effects of the backwater caused by the head

loss through the screen. Some installations include an overflow weir to a bypass channel to prevent

upstream surcharging if the screen becomes blinded.

The hydraulic consideration is very important in the screen design. The velocity distribution in the

approach channel has an important influence on the screen operation. A straight channel ahead of the

screen ensures good velocity distribution across the width of the screen.

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The engineer must ensure that the wastewater’s approach velocity to the screen does not fall below a self-

cleaning value, or rise enough to dislodge screenings. Extremely low channel velocities may result in the settling

of solids in the channel ahead of the screen. Ideally, the velocity in the approach channel should exceed 1.3

FPS, at minimum flows. This is to avoid grit and other solids from settling in the approach channel. Locating a

Parshall Flume down stream of the screen provides velocity control in the screen channel.

Solids settling in the channel, ahead of the screen, may hinder the operation of the screen, and in some cases

may damage or cause premature wear of the screen.

ITEMS TO BE CONSIDERED WHEN EVALUATING SCREENS:

- Hydraulic Efficiency

- Cleaning Efficiency

- Net Openings Between Bars

- Cycle Time

- Material of Construction

- Headroom Requirements

- Controls

- Ease of Maintenance

GRIT SYSTEMS

Grit removal is an important part of the wastewater treatment process. Grit removal has proven to be of value in

the reduction of maintenance costs of downstream equipment. Grit causes wear on pumps, clogs pipes and

channels and can take up valuable space in the sludge digestion tanks.

Depending on the type of grit removal process used, the removed grit can be further concentrated in a cyclone,

or specially designed washing type screws and then washed to remove lighter organic material captured along

with the grit. The washed grit can be more readily stored without odor problems and is more easily disposed of

than unwashed grit.

The quantity and characteristics of grit, and its potential adverse impact on downstream processes, are

important considerations in selecting a grit removal process. Other considerations include headloss

requirements, space requirements, grit removal efficiency, organic content and economics. A variety of grit

systems are available today. The basic categories are vortex type, chain and bucket (aerated & non-aerated),

chain and scraper (aerated & non-aerated), and aerated screw type.

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Grit particle sizes, for design purposes, have traditionally included particles larger than 65 mesh (0.008”) with a

specific gravity of 2.65. Removal of 95%, or greater, of these particles has always been the target of grit removal

design. Grit removal designs are now capable of removing up to 95% of 100 mesh (0.006”) to avoid their adverse

effects on the downstream processes.

Similar to screen designs, flow extremes must be identified so the grit chamber can be designed to efficiently

remove grit.

The quantity of grit entering the treatment plant is usually greatest during peak flows. Grit chambers are sized to

remove grit effectively at peak flows and to avoid removing excessive organic material at lesser flows.

GRIT REMOVAL

Removal of grit from the grit chamber can be done in many ways, depending on the type of grit system used. The

most common four methods that will automatically remove grit are:

- Screw Conveyor

- Chain and Bucket Elevators

- Clamshell Buckets

- Pumps

GRIT WASHING AND DEWATERING

After removing the collected grit from the grit chamber, the grit is normally washed to ease handling. In most

cases, a reduction in grit volume by removing the water contained in grit saves transportation costs and eases

transport and handling during disposal. Also, washing the grit to remove putrescible organic material makes grit

handling and disposal more manageable. Removing putrescible organic material prevents odors and nuisance

conditions caused by decomposition of organic material.

A Hydrocyclone Separator concentrates grit centrifugally, requiring a steady feed of the grit slurry at an inlet

pressure to the grit classifier of 5 psi to 20 psi. The constant feed rate will typically be within the range of 200 to

500 gpm, depending on the size of the cyclone. Cyclone separator sizing is based on the cycled feed rate and the

grit slurry solids concentrations. Cyclones work best at feed concentrations less than 1% solids. The centrifugal

action created in the cyclone separators increases the solids content to an average of 5% to 15%. Approximately

90% to 95% of the feed flow rate discharges through the vortex finder at the top of the cyclone. This flow volume

reduction saves transportation and storage and reduces the required size of the grit classifier. However, cyclones

are prone to clogging and may be replaced with specially designed grit classifiers.

Grit classifiers wash the grit by separating the putrescible organic from the grit. Classifiers are sized based on the

settling velocity of the particles to be removed, the feed flow capacity, and grit capacity. For a target particle size

and flow rate, the design engineer selects a minimum pool area (surface area) and overflow weir length. WSG &

Solutions, Inc. has a patented HFR washer design for flows to 400 GPM.

Classifiers, offered by major manufacturers, are inclined from 15 to 30 degrees from the horizontal. In addition to

slope, proper flight tip speed and pitch assist in particle removal. Hardened flight edges or abrasion resistant wear

shoes may be used to resist the abrasive action of the grit.

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Product Line Offerings

Screens CSO Applications

Cog Rake Bar Screens CSO Technik Biogest Pump Action Screens

Model GA CSO Technik Biogest VacFlush Systems

Model GB CSO Technik Biogest Alpheus Flow Limiters

Model GBD CSO Technik Biogest Flushing Gates

Rex® Series 1000 Screens CSO Technik Biogest Tipping Buckets

Rex® SDFR Screens

Rex® HDFR Screens

Dual Stream® Screens

Dual Stream® Perf. Screens Misc. Products

Link-Belt® 2-Rope Bar Screens

Link-Belt® 4-Rope Bar Screens Screw Compactors

Catenary Bar Screens - Shafted Compactors

Link-Belt® Thru-Clean Screens - Shaftless Compactors

Link-Belt® Tritor Screens Grit Screws

Link-Belt® Disc Screens Screw Conveyors

Link-Belt® Drum Screens - Shafted Screw Conveyors

Link-Belt® Heavy Duty Thru-Clean Screens - Shaftless Screw Conveyors

Steelguard® Fine Screens Belt Conveyors

Rotary Drum Screens Swingfusers (utilized with grit equipment)

In-Channel Screen-Basket Type Swingfusers Hoists (utilized with grit equip.)

In-Channel Screen-Drum Type Static Screens

Septage Units

Grit Removal

Rex® C&B Grit Collectors

Rex® C&S Grit Collectors

Link-Belt® CS Grit Collectors

Link-Belt® ASB Grit Collectors

Link-Belt® AS Grit Collectors

Link-Belt® ASP Grit Collectors

HFR Grit Washers

Link-Belt® SW Grit Washers

Link-Belt® SWC Grit Washers

Air Lift Pumps (used in Grit applications)

Aer-Degritter

Link-Belt “B” Grit Collectors

WSG Gritguard DIRECT Grit Removal System

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Link-Belt® GA Cog Rake Bar Screen

Front cleaning cog rake bar screens remove debris

from a fixed bar rack mounted in a channel. A single

carriage assembly descends to the bottom of the

channel where it cleans the captured debris from the

bar rack, and carries it upward where it is removed by

a wiper. The assembly then returns to the bottom,

repeating the cycle. Type GA cog rakes have the guide

shaft above the drive shaft and are for use in channel

widths up to 12 ft and water depth up to 9 ft. Openings

can be from 3/8” and larger.

Link-Belt® GB and GBD Cog Rake Bar Screen

GB cog rakes have the guide shaft below the drive shaft and are for channels from 4 to 12 ft wide and water

depth more than 9 ft deep. A variation of this is the GBD with dual drives and the ability to handle the large

debris and high flow rates of storm flow applications in channels from 12 to 30 feet wide. Openings can be

from 3/8” and larger.

GB Cog Rake Bar Screen GBD Cog Rake Bar Screen

Rex® Series 1000 bar screens

Rex® Series 1000 bar screens have rack widths

from 9 to 30 inches, discharge lengths to 15 feet

and bar openings from 1/4” to 1”. The units are

mounted with pivots to swing screen out of the

channel for service flows to 5 MGD.

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Rex® Standard Duty FR screens

Rex® Standard Duty FR screens are suitable for the

majority of municipal and industrial applications.

Sized for channels from 1 to 4 ft wide with a

maximum depth of 18 ft, these screens travel at 10

FPM and can be timed for 24-hour operation with

automatic start-stop intervals. They may he supplied

with debris compactors. Non-metallic chain and

sprockets are also available. Bar openings can be

3/8” and greater.

Rex® Heavy Duty FR screens

Rex® Heavy Duty FR screens may he used in

channels from 1 to 10 ft wide, 45 ft deep. Like the

Series 1000 and Standard Duty FR screens, the

rakes clean bars from the front. Heavier chains are

provided for greater load carrying capacity. Non-

metallic chain and sprockets and stainless steel chain

are also available. Bar openings can be 3/8” and

greater.

Link-Belt® Thru-Clean bar screens

Link-Belt® Thru-Clean bar screens use a “clean-

from-the-back” design for efficient, complete

removal of trash and large solids. Compact design

is suitable for low head room installations in

channels from 2 to 10 ft. wide. Multiple rakes

increase capacity. Bar openings can be 3/4 inch

and greater.

Link-Belt® 2-Rope and 4-Rope screens

Link-Belt® 2-Rope and 4-Rope screens have a

fixed bar rack and are front cleaned screens with a

history of dependable performance in deep channel

applications. The 4-rope, vertical or inclined screen

design has bar openings as small as 1/2 in, and an

ability to operate in channels up to 20 ft wide and

200 ft deep, with the capability of digging into and

removing grit. The two-rope, inclined screen is

designed for shallower channels and provide up to

10’-0” wide applications. Both can be operated

continuously or intermittently.

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Catenary bar screens

Catenary bar screens are often used in unattended operations

such as CSO control facilities where loads are often heavy and

varied. Sprockets, bearings and shafts are all above the water

level, reducing corrosion and damage potential. The rakes bear

against the face of the bars by catenary action of the chains.

Being unguided, rakes easily ride over obstacles and can be

provided in widths from 2’-0” to 25’-0”. Bar rack openings are 1/2”

and larger.

Steelguard® Screen

Steelguard® fine screens, utilize heavy-duty stainless steel rotating

grid assemblies to perform the process of screening and removal

of debris found in influent channel flow to wastewater plants. The

grid assemblies consist of pivot shafts, screen elements, guide

links and spacers and each grid section can be easily removed.

These fine screen models are continuous loop, self-cleaning fine

screens, utilizing stainless steel filter elements in a high-strength

assembly. As the flow passes through the stainless steel grid

assembly, debris is captured and elevated to the discharge point.

The majority of captured material is removed by a primary spray

system, utilizing fan spray nozzles, and then by a secondary

rotating brush assembly. Discharged debris and washwater is

captured in a transfer conveyor, or a screw compactor. The design

offers lower operating headlosses and the ability to handle a wider

range of flow variation. The significantly stronger stainless steel

components utilized within the grids, offer superior performance

over non-metallic grid components offered by other manufacturers.

Openings can be 1/4” and larger.

Dual Stream® Screen – Replaceable Panel

This continuous, self-cleaning filter type screen allows flow to pass through the bottom and both sides of the filter

screen assembly. With the use of an integral screw compactor, the captured debris is also dewatered and

compacted after removal from the waste stream. The Dual Stream Screen features a direct drive and removable

Snap-Lock® screen panels providing the option to use either 1/4”, 3/8” or 1/2” openings. Nine different sizes are

available from 24” x 24” to 36” x 36” for channels as narrow as 3’ and as deep as 25’.

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Dual Stream® Perf Screen – Perforated Panels

Unique among our screens is the Dual Stream in which the screen elements are oriented parallel to stream flow.

Flow enters the center of the screen and passes through both sides and the bottom. The continuously rotating

screen carries the debris to the top where it is removed by gravity-assisted washing. It is then dewatered and

compacted prior to disposal. The free water with liquefied organics returns to the stream. Dual Stream screens are

available in a range of sizes for installation in channels from 2-1/2 ft and wider. Maximum channel depth is 25 ft.

Screen grid openings range from 2 mm to 6 mm.

Drum Screens

The drum screen is designed to present a clean screening surface to the oncoming wastewater stream at all times

while in operation. The drum screen is designed for minimal headloss at peak flow. Spray piping is arranged for both

internal as well as external sparging and shall include necessary solenoid valves and controls for sequential washing

of the grid. The inlet pipe will connect to the inlet pipe connection of the rotary drum screen. Internally fed drum

screens can be provided with 500 microns to 6 mm openings. Externally fed drum screens can be supplied with 250

microns to 2.5 mm, all wedge wire screening media.

EXTERNALLY FED INTERNALLY FED

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In-Channel Screens

The In-Channel Screens are ruggedly designed for ease of

maintenance and versatility. With a wide variety of sizes and

options, we are able to be a complete supplier for most size plants

capable of handling flows up to 7 MGD. The openings can be 2 mm

to 6 mm.

Our units incorporate a variety of screen types, including punched

and drilled. The screens incorporate a high strength shaftless

screw, full length, with replaceable stainless steel sectional flights

and brushes at the inlet. The shaftless technology eliminates

clogging. Three cleaning zones help wash the material as well as

keeping the tube clean. A compaction zone reduces the volume of

material by 50%.

Screw Compactor with Wash Module

Screenings are introduced to the compactor through a hopper. As

the screw rotates the material, gravity and surface friction react to

force water from the screenings. The resulting compacted plug is

forced out of the discharge of the screw. The unit can also be

furnished with a bagger to remove odors.

The compactor’s direct drive system eliminates belts, chains and

thrust bearings. The internal screw conveyor is closely fitted to an

adjustable perforated plate zone, to aid in effective cleaning,

screenings transfer and compaction. The perforated zone is fully

housed in a formed stainless steel sheet metal drain pan

assembly. Available in 9 in diameter, the screw compactor can

process up to 75 cubic feet per hour.

Hubert Drum Screen

Due to its cylindrical shape the drum screen can handle large

differences in water level. The Hubert drum screens are designed

with patented A-shaped spokes resulting in high rigidity and

resistance to deformation. This produces an accurate fit against

channel walls, enabling filtration of particles down to 500 Microns.

Drum screens are available in coated or stainless steel. All Hubert

rotary drum screens are equipped with maintenance free bearings.

Rotary drum screens of the A-shaped spoke design can be supplied

in diameters of 5 to 16 meters with widths varying between 2 and 5

meters.

Hubert Micro Screen

Fine Screens are available in diameters of 0.8 to 4.0 meters and

widths of 1.2 to 6 meters. The screen mesh varies from 25 micron to

500 microns at a capacity up to 40 MGD. The Hubert fine screen

consists of a drum frame on which a number of screen panels are

clamped. The screen panels are made of plastic or stainless steel,

depending on the application and requirements. A simple clamping

mechanism makes the exchange of screen panels an easy job. The

stationary hollow shaft with funnel-shaped debris collector (s) is also

made of stainless steel and mounted in maintenance-free plastic

bearing bushings. The drum is driven by a wear-resistant nylon rim

gear and pinion. The composition of the water to be treated

determines the type of stainless steel.

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Rex® Type C&S Grit Collectors

Rex® Type C&S Grit Collectors can be used in plants with

flows up to 5 mgd per channel. The chain and scraper

system moves across the chamber bottom and up an

incline where the grit is deposited into a receptacle. Tanks

may be from 2-1/2 to 4 ft wide and up to 36 ft long. This

collector can also be designed to use the Rex® Gritreat

System to aerate the chamber. With Gritreat, a baffle

extends along the length of the chamber parallel to the air

headers and slightly below the surface of the water. Air

from the headers draws the flow under the baffle and back

up into the chamber, essentially spiraling the flow under

and over the baffle and through the length of the chamber.

Models are also available with non-metallic components.

Rex® Type C&B Grit Collectors

Rex® Type C&B Grit Collectors use a chain and bucket

design which scrapes the grit toward the influent end of

the chamber and elevates it to a discharge point where it

is deposited into a grit washer, conveyor or truck. With

tank widths from 3’-2” up to 10’ and lengths from 20 to

80’, flows can be as high as 40 mgd. It may be operated

as a non-aerated system or it may use the Rex®

Gritreat aeration design in the same way as the Rex®

chain and scraper collector. Models are also available

with non-metallic components.

AS Grit Collectors

An AS (aerated straightline) system is the perfect

answer for small chambers and flows up to 10 mgd. The

system consists of a hopper with inclined screw and grit

washer. Compressed air is provided through diffusers to

create and maintain uniform velocities of approximately

1.0 to 2.0 fps across a range of flow rates.

The Longitudinal grit screw collector can convey grit

which settles in the grit chamber to a special hopper

section for removal by the grit pump. The grit pump

discharges into a screw washer and cyclone. The

grit chamber is aerated to enhance separation of grit

and organic matter. The collector can have a flow of

1.5 MGD and up. Air is used to maintain uniform

circulating velocity. The screw will move the grit to

the pump suction location

ASP Grit Collector

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ASB Grit Collectors

Type ASB systems use a longitudinal screw at the chamber

bottom to convey grit to a bucket elevator for lifting and

discharging above the water level. A screw washer is

typically used at that point to ensure minimum putrescible

and water content in the discharge. Swingfuser style

aerators can be used to provide maintenance accessibility

to diffusers without draining the chamber. If flows exceed

60 mgd or higher grit volumes, a separate drive for the

lower grit screw can be supplied. The ASB can also

operate by removing the bucket and elevator and adding a

pump to become our ASP model.

Link-Belt® S Grit Collector

The Type S can handle flows from 1 MGD up to 80 MGD. The

unit consists of a long narrow chamber equipped with a collector

having pitched flights. The flights turn the settled grit and debris

over and over and discharge it into an inclined washing and

dewatering screw conveyor at the influent end of the chamber.

The action and speed of the collector ensures positive grit

collection, and at the same time, keeps most of the putrescible

organic material in suspension so that it will float out of the

chamber. The washing and dewatering screw tumbles the

material delivered to it by the collector and separates the grit

from the light putrescible.

The flights are equipped with easily replaceable, hardened and

abrasion-resisting wear shoes. Idler sprockets, or tracks with

renewable, wear-resisting steel flats are provided to support the

flights.

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SW and SW-C Grit Classifiers

Grit Classifiers will dewater and classify grit to a low putrescible content. When grit is removed in a dry state, water is

added in the grit classifier to float out the putrescible matter. The grit is then removed by the screw. At small plants,

the grit classifying will be only for a short period every day and, therefore, fresh water can be used. At larger

installations, where greater volumes of water are required, the plant’s effluent may be used. There are six sizes of grit

classifiers. Normally, the size used should be selected on the basis of the volume and particle size of the grit to be

handled. This will establish the volume of wash water required. If a greater volume of water is required to convey the

grit to the classifier than that required for merely washing the grit, the surface area and the size of hopper should he

increased or a cyclone used.

A cyclone is used in conjunction with grit washers when sludge and grit are to be separated or where the rate of water

to convey the grit would dictate an excessively large classifier. Here the cyclone concentrates the grit and the SW is

used for grit dewatering.

HFR Grit Washer

The HFR High Flow Rate Grit Washer was developed

specifically to handle flow rates from 100 to 400 GPM. The

units will guarantee 95% removal of 150 mesh grit at 200

GPM or 100 mesh grit at 400 GPM. Four standard models

are available as well as special designs.

The HFR performance is accomplished effectively by

immediately redirecting the inlet stream to create predictable

flow patterns which promote rapid separation and settling of

grit particles. The heavy inorganic grit is forced to settle and

in turn be conveyed and dewatered by the screw while lighter

organics are carried over the discharge weir to be returned to

the treatment process flow. Dual adjustable weirs are

standard.

Hydraulic model studies can be accomplished to handle

special applications.

The HFR units eliminate the need for cyclones typically

applied to grit removal applications. Cyclones are prone to

clogging, require maintenance and increase pump

horsepower.

The HFR units are shop assembled, tested and

shipped completely assembled. Various materials

of construction are available.

SW-C Grit Classifier

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GRITGUARD™ “DIRECT” GRIT REMOVAL SYSTEMS

(Diffused Inlet Redirected Energy Chamber Technology)

- Complete packaged systems, ideal for small

plants

- Flows from .25 MGD to 10 MGD

- No in-tank mechanical equipment or

maintenance

- Small overall system footprint with low cost

tank construction requirements

- 50 years and hundreds of installations of proven tank configurations used with AS grit

collectors

- Over 5 years and 100 installations incorporating

our proprietary baffling designs (also utilized in

our HFR Grit Washers)

- In-field/site and lab testing to support the

proven Airlift pump for improved performance in

grit applications.

Proprietary Proven Components:

Tank and Baffle geometry especially designed

using state of the art computerized modeling

- HFR Grit Washer incorporating our “Posi-Seal”

bearing

VACFLUSH SYSTEM

The Vacflush System is suitable for Storm overflow tanks, CSO, storm

storage tank, sewer storage system and retention tank

Principle Benefits

All of the component parts are above the tank and therefore can be

maintained without the need for hazardous man entry into a confined space.

Ability to completely flush the tank even if the storm tank only partially fills.

Low running and maintenance costs.

Utilizes storm water as the flushing media to avoid the use of potable water.

System does not impinge on storage volume thereby keeping tank size to a

minimum.

Flushing system can be used as the central support for the tank roof in

circular tank installations.

CSO EQUIPMENT

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TIPPING BUCKETS

- Low cost flushing system for smaller basins

- Simple robust design

- No power required

- Manual or auto fill

- Stainless steel construction

- Sealed for life bearings

- Complete design service

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The storm begins. Combined

sewage and rain water spill

into the storage chamber and

rise above the water level of

the inlet to the flushing

system.

The vacuum pump starts

automatically drawing water

from the storage chamber

into the flushing chamber.

Once the maximum level in

the flush chamber is reached,

the vacuum pump stops

automatically.

Vacflush System Operation No. 1

Vacflush System Operation No. 2

The storm subsides and the

storage chamber empties,

leaving sludge and other

sewage-related debris on the

chamber floor.

Once the tank is empty, the

flushing sequence starts

automatically. The large

volume of water surges from

the flushing chamber driving

all of the solids from the

chamber floor.

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• The PAS Screen is designed to retain solids greater than

6mm diameter in two directions from combined sewage or

storm water, to prevent discharge to the receiving waters.

The screenings are retained in the normal flow to the

treatment plant.

PUMP ACTION SCREEN

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Principle Benefits of the Pump Action Screen

- National CSO Test Facility, Wigan – Test Result 58% SRV

- Can be maintained from ground level without hazardous man entry

- No wearing parts in the screen basket

- Proven effective cleaning

- No moving parts in the screen basket

- Auto operation

- Minimal servicing

- Easy to retrofit

General Overview of the Pump Action Screen

- Screen Diameters: 300 & 500 mm

- Max Length: up to 6.000 mm

- Pump Options: Oil or Water Cooled, (can be guiderail mounted

for ease of maintenance)

- Max Flow Rate: 1766l/s Single Screen

- Multiple System options for Higher Flows

- Typical Power Required: 2.2 - 6 kW

- Screen Loading Rate 300l/s/m2 at 50% Screen Blinding

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FLOW LIMITERS

Alpheus “AT”

Suitable for:

Flows – Up to 438 l/s

Sizes – Up to DN500

Circular or rectangular

chambers

Dry or Semi Dry

Installation

• No power supply required

• Automatic de-blocking

• Constant pass forward flow, with accuracy of

+/- 5%, irrespective of upstream water head

• Minimal maintenance

BENEFITS OF THE ALPHEUS RANGE

Curve

Inlet Flange

Float

Float Fixings

Control lever

Inlet Plate

Outlet

Outlet Control Plate

Positioner

Yoke

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FLUSHING GATES

Flushing System Type KS

-Flushing gates are ideal for open tanks where confined space

entry is not required.

-The gates are closed to hold back a volume of water which is

then used to flush the tank after it has emptied.

-Gates are closed using double or single acting hydraulic

cylinders.

Benefits of the Biogest Gates system

-Long Hooks assist closure of gates when debris is present

-Double acting cylinder allows greater flush volume to be

retained for a more effective flush

-Polyethylene can be used for the opening gates section

reducing the manufacturing cost without damaging integral

strength.

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WSG & Solutions, Inc.

160 Commerce Drive, Suite 100

Montgomeryville, PA 18936

Phone: 267-638-3000

Fax: 267-638-3081

Web: wsgandsolutions.com