Screening

Perforated Filter Screen
The FSM Filter Screen was developed to solve modern day screening problems which occur in wastewater pretreatment. Following a successful test phase, the first system was installed in 1987. Since that time more than 1,500 units have been installed worldwide with over 350 in the USA. The FSM Filter Screen is characterized by its sturdy construction and operational reliability.
Click here for more »

Perforated Rotary Drum Screen
Influent to the drum is controlled by means of various inlet pipe designs, based on the type of material processed and flow rate required, which distribute the influent over a large area of the drum to ensure efficient use of the drum open area. As the drum rotates, screened fluids pass through the perforations in the drum and fall into the water collection trough underneath the drum and are then discharged. Solids are retained within the drum and are dewatered as they are moved to the elevated end of the
drum by the internal screw auger. The screenings are then discharged into a dumpster, conveyor, or compactor. The perforated drum is continuously cleaned by means of a friction drive brush. An internal spray bar is also supplied to allow intermittent spray cleaning if required.
Click here for more»


In Channel Perforated Drum Screen
In channel perforated rotary drum screens are used to improve the suspended solids capture rate in wastewater treatment plants from the typical 10-20% range of course bar screens to the 60-80% range. Taking more of the inert solids out of the flow greatly improves the treatment process and reduces operation and maintenance costs. Today’s modern in channel rotary drum screens are inclined 30-35 degrees. As the inflow enters the rotary drum, the flow level rises to a pre-set level causing the drum drive to turn on. As the drum turns, the combined duplex spray and brush cleaning system cleans the inside of the drum. The screenings (captured solids) fall by gravity into an inclined conveyor hopper. The high strength steel screw then transports the screenings to the compaction zone for dewatering and compaction.
Click here for more »

Multi-Rake Bar Screen
The FSM Multi-Rake Bar Screen was developed to solve the most demanding problems associated with wastewater pre-treatment. FSM improved the basic design of conventional bar screens to offer a unique product to meet the ever increasing process needs of end users. The FSM Multi-Rake Bar Screen combines fine or coarse screening with high solids capture rates, robust construction, long life, and low O&M costs all in one screen. This combination, along with their proprietary “step-over” feature, ensures operation when you need it most.
Click here for more »

Screening Washing & De-Watering

Screenings Washer Compactor
The FSM wash compactor is synonymous with hygienic and efficient handling of screenings. Screening disposal is a cost factor for every installation; wet screenings are heavy and increase disposal costs. The fecal matter in the water must also be delivered to the subsequent sewage purification process. The FSM wash compactor reduces the weight and volume of the screenings while washing out more than 95% of fecal matter. FSM wash compactors provide high performance combined with low operating costs to provide an excellent cost/performance ratio.
Click here for more »

Grit Separation

XGT: Vortex Grit Removal System
Waste-Tech has been directly involved in the design, manufacture, supply, start up and testing of the XGT™ vortex grit removal technology since 1984. Based on experience with many installations, we have introduced a number of significant improvements to the system. These include the self-priming grit pump and vortex grit classifier. The XGT™ vortex grit system is designed to efficiently remove both fecal and vegetable matter (corn, rice, beans, peas etc.) from the grit in the grit chamber resulting in cleaner grit with considerably lower organic content.
Click here for more »

Traveling Grit Bridge
AWT, the number one designer and supplier of Traveling Grit Bridge technology in Europe, has partnered with Waste Tech to bring this technology to the United States. With over 30 years experience, and more than 1,000 installations, AWT is the leader in Traveling Grit Bridge technology. Manufactured in our Spartanburg, SC facility, the AWT Traveling Grit Bridge is available in a variety of designs to meet plant specific demands. The bridges can be fitted with scrapers and/or pumps (airlift or submersible) for grit removal as well as skimmers for removing grease and scum.
Click here for more »

Grit Separation

Grit Washer
The FSM grit washer has been developed with two aims in mind: 1) To achieve a very high separation performance of the finest grit particles and 2) To achieve grit with less than 3% total volatile solids.

The FSM grit washer consists of two basic items – a rotating perforated screening drum and a grit separator/washer unit, however, if the plant has fine screens (<10mm perforated screens), the screening drum can be eliminated. Special emphasis has been placed on maintaining low water consumption while achieving high grit capture rates and low volatile solids concentrations. The FSM grit washer accomplishes these while providing high performance coupled with low operating costs.
Click here for more»

CSO Screening

CSO Screen
Regulations require that combined storm overflows are screened to remove floatables and sanitary solids before the excess flow is released to a water course. The Waste Tech CSO screen is designed with 4mm mechanically cleaned bar spacings to prevent floatables bypassing the screen and retaining the solids which pass on to the wastewater treatment plant. This low cost, low maintenance CSO screen is a guaranteed solution to pollution of our waterways, rivers, canals, streams, and lakes.
Click here for more»

Complete Plant

Compact Plant
The FSM compact plant with separate screening and grit chambers marks the beginning of a new era in grit separation. The “intelligent” grit chamber automatically adjusts the available settling area to the incoming flow, and thus achieves optimum grit separation at all flow rates, while eliminating situations where more sludge than grit is removed at reduced influent rates. This performance is made possible by the innovative self-regulating lamella plates in the grit chamber, whose position is adjusted solely by the force of the incoming flow.
Click here for more »