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Aqua Guard®

The Aqua Guard® is a rugged and proven self-cleaning, traveling water screen that uses a unique filter element system, which automatically removes a wide range of floating and suspended solids from a wastewater stream.

These unique elements are woven together on stainless steel shafts to form the endless moving belt that collects, conveys and ultimately discharges the solids that are being removed from the treated wastewater.

The Aqua Guard® is capable of performing in a wide range of applications and element spacing settings – from 1mm to 30mm –depending on the requirements of the specific treatment process.

Principle of Operation

Solids larger than the nominal screen opening contained in the wastewater stream are captured on the filter elements and conveyed upward on the face of the filter belt to be discharged at the rear of the unit. The traveling screen system uses a two-stage screening method that allows the screen to filter out solids much smaller than the screen opening. This is achieved through coarse filtration on the leading edge of the belt, while fine screening takes place on the recessed face resulting in minimal headloss.

The Aqua Guard® utilizes three principle-cleaning modes. The elements themselves are self-cleaning. As the tip of one row of elements passes between the shanks of the elements on the lower row, the elements are cleaned of collected solids. The traveling screen systems are also equipped with a rotating brush that provides positive removal of any additional solids that might remain on the belt. Finally, optional water sprays can provide a final polishing on the element belt in especially rigorous applications.

Design Options

The Aqua Guard® comes in standard screen widths from 1.0’ to 9.0’ depending on the model chosen with flow rates up to 100 MGD through a single unit. Two frame styles are available: Type A – The Pivoting Design and Type T – The Fixed Frame Design.

Why We Use Plastic Elements on a Headworks Screen

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Features & Benefits

Improved function

3-D filter belt screening surface
provides high capture rates without blinding the screening surface, creates filter mat to improve capture rates, reduces downstream maintenance, and provides coarse and fine screening in one unit

Reduced Maintenance

No submerged bearings 
improves maintenance as all serviceable parts can be access above the water level

Water drop with leaves

Robust design
increases installation life (units in operation for 20+ years) and durability 

Improved function

Thousands of teeth
increase the high solids carrying capacity and their polymeric blend adds to strength and memory

Improved function

Memory / sacrificial tooth design
allows for loss of teeth without any impact to solids carrying capacity (similar to a shark); *See AG Elements video below)

Water drop

Versatile design
– channel widths from 1 ft. - 9 ft. wide; discharge heights beyond 50 ft.; 1 mm - 30 mm screen openings; installation angles 60-75-85 degrees; flows up to 100 MGD per screen

Reduced Maintenance

Filter mat
allows for intermittent operation, reduces machine wear, improves capture rates, and reduces power consumption

Reduced Maintenance

Pivots out of channel
to allow for maintenance from the operating floor and emergency by-pass; No attachments to sides or bottom of channel

Water drop

Shipped fully tested and assembled
to ease installation and reduce construction and start-up time

Americal flag - USA

Engineered and technically supported from the USA
to improve local support and remove overseas timezone conflicts and travel delays 

Americal flag - USA

Spare parts manufactured and warehoused in USA
reduce lead times for emergency parts


Preview image for the video "Parkson Aqua Guard® Self-Cleaning Screen".
Screenings and Headworks
Aqua Guard screen media
Aqua Guard®
Aqua Guard® Continuous Self-Cleaning Moving Media Screen
Aqua Guard® Moving Media Screen Installation w/ Cover Open
Aqua Guard screen media and brush
Aqua Guard® Efficient Screen Cleaning System Installation
Aqua Guard® Shown w/ Aqua WashPress
Aqua Guard® In-Channel Screen Cleaning System Installation
Aqua Guard® In-Channel Screen Cleaning System Installation
Single Unit of Aqua Guard® Shown
Multiple Aqua Guard® Units Shown

Product Brochure

Case Studies