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Dewatering-Wastewater



Belt Dryer

Andritz - Belt Drying System - provides highly desired Class A Biosolids in a highly marketable sludge pellet / granule. The process granulates the dewatered sludge in a mixer with product that has already been dried. The moist granulate produced here is distributed evenly over the belt in the dryer by a specially designed feed module. The even layer of material on the belt creates optimum conditions for even distribution of the drying air.  This, in turn, is necessary for even heating and drying of the sewage sludge. The layer of material on the belt forms a filter medium for the air flowing onto the granulate layer from above and thus prevents entrainment of dust. The low temperature of the drying gases (< 150°C) and the low dust content in the system facilitate safe operation. The dried material is not exposed to mechanical stress during drying and is pre-cooled before the dryer discharge. The technology - simple, convincing, and successful.

Centrifuge

Andritz Centrifuge

Andritz - Centrifuge is manufactured to handle the most difficult to dewater sludges with automated controls and torque control to allow operation with minimum amount of operator attention and maintenance. Field replaceable tungsten carbide feed and discharge ports, field replaceable wear tiles with 20,000 hour wear guarantee and 316L stainless steel bowl  provide a rugged and dependable machine. Andritz commitment to stock spare parts allows the owner to exchange the scroll without having to remove the bowl since both are independently balanced freeing up owners requirements for spare parts. Successful installations include Olathe-KS, Newton-KS, Wichita-KS and Lincoln-NE.

Belt Filter Press

Andritz Belt Press

Andritz Belt Filter Press

Gravity Belt Thickener – Andritz

Andritz Gravity Belt Thickener

Andritz Gravity Band Thickener

Screw Press – Andritz

ANDRITZ C-Press, a screw press providing high performance combined with compact design, features low operating costs. With its direct drive system and conical shaft with constant screw pitch, the new press can handle inlets from 1 to 23 m3/h and outlets from 50 to 800 kg DS/h. In addition to a long lifecycle, the press also offers the advantages of easy operation, low maintenance, and – due to bi-sequential cleaning – 30% less water consumption than comparable equipment.

Rotary Drum Thickener – Kusters

Kusters - Rotary Drum Thickener - to reduce sludge hauling costs, increase digester capacity, and to reduce size of other dewatering equipment. Thicken sludge from (0.5% -1.5%)  to outlet concentration of  (5% to 7%) with flowrates of 25 to 400 gpm. Choose Kusters to save significant reduction in polymer consumption compared to competitors in side by side tests. Flocculation tank with maxized detention time

Rotary Press – Slow-rotating ACAT Screw Press – Kusters

Kusters ACAT Screw Press -  Slow rotating screw press runs quietly, unattended and results in high cake solids, low polymer consumption, high capture rates and low energy consumption.

Plate & Frame – Andritz – Netzsch

 Andritz - Netzsch Plate and Frame Press

PolyBlend® DP Dry Polymer Preparation System

UGSI PolyBlend® DP Series Dry Polymer Feed System

The PolyBlend® DP series dry polymer preparation system offers a unique two-stage method of initial high-shear mixing followed by low-shear mixing. The mechanical activation of the dry polymer ensures polymer optimization and lowers operating costs. An innovative stainless steel "hollow wing" mixing impeller in the mix/hold tank reduces polymer consumption by providing proper energy at low speed through impeller size and recirculation to prevent agglomerations while minimizing polymer fracture. With minimal maintenance and a small footprint, the PolyBlend® DP is fully automatic and easy-to-operate.

UGSI PolyBlend Liquid Polymer Wetting & Activation System

UGSI Polymer Feed Systems

A PolyBlend M Series Polymer Feed System provides a tapered mixing chamber that provides high performance polymer mixing and feed. The PolyBlend® system applies high mixing energy at the first contact of polymer and water for a short duration on initial shear. The system also applies mixing through a tapered regime, which minimizes polymer agglomeration and fracturing. After initial wetting or inversion in the high-shear impeller zone of the unit, polymer solution passes through a cylindrical processing zone where it is subjected to continuously decreasing shear rates over a period of time. The unit is equipped with "C" Controls functions, which along with a variable speed mixer offers a system with unmatched activation flexibility. The controller is capable of maintaining constant solution strength by sensing changes in incoming make-up water flow and automatically responding to these flow changes via a motor-driven control valve. Even primary and secondary dilution water is kept at the same ratio as output is adjusted.