1. Municipal water enters the headworks through the collection system which includes storm drains and lift stations where large debris and grit can be readily dewatered by Roll-Off Dewatering Container Filters or processed through a Debris Mate® Dewatering Container Filter with its built in bar screen. Alternately, a vac truck may dump directly into a Container Filter.
  2. As the effluent travels throughout the plant’s aerobic processes, it will typically pass through an aeration zone, clarifier, and ultimately end up in a digester, lagoon, or pond. The sludge that is wasted from the digester or pond is then ready to be pumped through a Poly Mate Polymer Injection Unit and into a Sludge Mate® Container Filter.
    1. Sludge/effluent (at least .8-1.5% TSS- total suspended solids) is removed from the digester or pond and pumped into the Poly-Mate® Polymer Injection Unit. The Poly Mate® Polymer Injection Unit adds dewatering polymer to the sludge.
    2. The Sludge is pumped into the Sludge Mate® Container Filter where it flocculates (separates from the water). The free water runs through the filter media and out of the drains at the bottom of the Sludge Mate® Container Filter. This water is returned to the head of the plant for further treatment, now with a reduced BOD and COD—essentially a reduced load of bacteria (Biochemical Oxygen Demand, Chemical Oxygen Demand). The process is repeated until full or ready to dump.
    3. The sludge then settles in the dewatering container for 32-48 hours for maximum solidity of sludge cake to meet or exceed a paint filter test at the landfill.
    4. The Container is then loaded onto a Roll-Off Truck and take it to the landfill for dumping.


Container Filters are an economic solution for the everyday needs of wastewater treatment plants. Municipal dewatering can benefit from the use of dewatering containers in place of drying beds, which are weather dependent and require significant amounts of labor and bed media such as sand.

Dewatering Container Filters such as Sludge Mates® can also help municipalities waste from their digester without having to worry about the constraints or cost of liquid hauling their waste. The 70% savings of dry hauling as opposed to liquid hauling is a common reason many municipal dewatering processes involve a Sludge Mate® Dewatering Container Filter.

Biosolid waste can be easily flocculated using a Poly Mate® Polymer Injection System to mix and inject polymer into sludges and slurries as they enter a Sludge Mate® Container Filter. The free and clear water will then run out of the drains at the bottom with a reduced biological oxygen demand and chemical oxygen demand (BOD and COD), ready to return to circulation at the headworks of the plant for treatment.

When the dewatering sludge is allowed to set in the dewatering equipment for 36-48 hours you are left with a solids cake that will easily meet or exceed the paint filter test required for dry hauling to the landfill or land applying.

Alum, Ferric, and Lime are all common coagulants used to treat the ph level as well as the lipid or colloidal nature of various consistencies of surface wastewater. All of the resulting sludges and slurries can be matched and blended with a polymer for dewatering in a Sludge Mate® Dewatering Container Filter.
Lift Station Waste can often be troublesome for the headworks of municipal wastewater plants as the wastewater is often full of inorganic grit and debris.

Large clog causing debris such as sticks, stones, rocks, prophylactic rubber, “flushable” wipes, and rags can easily be handled with the Debris Mate®–the world’s first dewatering container filter with a built-in bar screen.

Whenever a vacuum truck is used The Large Debris Strainer® can also be used. It simply filters large debris inside of its enclosed container through its retractable bar screen, allowing the remaining wastewater to flow out the other side.

Additionally, a Roll-Off Container Filter is an excellent solution to dewatering the grit that is a common cause of wastewater plant jams and clogs.

Storm Drain Waste can wreak havoc inside of a municipal wastewater plant. The simplest and most direct solution is to dewater the grit and debris before it enters the plant.

The Debris Mate® is a dewatering container filter that solves the “flushable” wipes problem, as well as problems with rags, rocks, sticks, stones and generally any other kind of debris using a patented, built-in bar screen.

A Roll-Off Container Filter is a tried and true solution to grit, sand, and other clog causing particulate.

On a smaller scale, the Large Debris Strainer® can be used with each vacuum truck that needs to enter a facility. By pumping the effluent through the Large Debris Strainer®, the inorganics such as rags and wipes are strained through its retractable bar screen, while the rest of the effluent passes through the chamber.

The Sludge Mate® Dewatering Container Filter has been used in many wastewater lagoons, wastewater ponds, and catch basins. They can be used to dewater effluent before it enters the wastewater pond or lagoon to reduce the biological oxygen demand (BOD), chemical oxygen demand (COD), or simply the volume of the wastewater pond.

If used with a submersible pump, a Sludge Mate® can also be used in dredging operations for wastewater ponds. This has proven particularly handy when repairs are needed to the clay or concrete foundation to maintain Environmental Protection Agency (EPA) Wastewater Permit and Regulations.

When using vacuum trucks to haul septic wastewater it can quickly become necessary to remove any sort of potential clogs or jams (inorganics/debris) from the effluent before entering it into any kind of facility.

The Large Debris Strainer® is excellent for removing just these sorts of flushable wipes, rags, rocks, sticks, or stones. It simply connects to the hose coming out of the truck, and filters the effluent through a retractable bar screen contained within its chamber.

The Debris Mate® is the only dewatering container filter with a built-in bar screen. This makes it the perfect solution to a large volume of effluent containing inorganic materials (flushable wipes, sticks, rocks, etc.).

The Self Dumping Hopper® can also deal with inorganic materials, grit, and large debris on a much smaller scale.



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