Products & Services: Sludge

June 1, 2007
By measuring the sludge concentration and turbidity values in wastewater and drinking water, the Hach Solitax sc Suspended Solids and Turbidity Analyzer reduces reactive dosing to help increase overall plant efficiency and lower operation and maintenance costs.

Suspended solids analyzer

Click here to enlarge image

By measuring the sludge concentration and turbidity values in wastewater and drinking water, the Hach Solitax sc Suspended Solids and Turbidity Analyzer reduces reactive dosing to help increase overall plant efficiency and lower operation and maintenance costs. Whether used to assess activated sludge and the entire biological cleaning stage, analyze the purified discharge of wastewater treatment or monitor sludge at various stages of concentration, the SOLITAX sc gives users accurate and continuous measurements - completely independent of color - online and in real-time.

Hach, Inc.
Loveland, CO Tel: 800-604-3493 Web:

Centrifugal DAF pumps

Click here to enlarge image

The EDUR Centrifugal DAF Pumps, available from Shanley Pump & Equipment, are designed for dissolved air flotation applications or systems requiring gas charging of liquids. They provide an efficient air saturation system for waste activated sludge thickening and can be integrated into many OEM DAF units. The pumps produce ultra-fine micro-bubbles less then 30 microns in diameter. This can help reduce costs over previous DAF systems.

Shanley Pump & Equipment Inc.
Arlington Heights, IL
Tel: 847-439-9200 Web:

Sludge dewatering

Click here to enlarge image

Thompson Pump’s hydraulically driven submersible pump ends and hydraulic power units with automatic start/stop are suited for sludge dewatering. They can minimize labor costs, allow for fuel savings, and reduce engine wear. The submersible pump ends also eliminate suction lift limitations, allowing pumping in deep excavations, manholes and pits. The 32HPU with a 46HST handles solids up to 3", has a maximum capacity of 1,580 gpm and pumps efficiently at heads up to 115 feet. Designed to run dry without damaging components, these models are constructed from heavy-duty cast iron and steel. The automatic start/stop system energizes and de-energizes the hydraulic circuit while automatically adjusting the speed of the hydraulic power unit.

Thompson Pumps
Port Orange, FL
Tel: 800-767-7310

Sludge thickeners

Click here to enlarge image

Hi-Tech offers a complete line of high torque sludge thickeners for municipal and industrial thickening applications. Every thickener mechanism can be equipped with a Type H - hydraulic drive system that provides a torque read-out in actual operating ft-lbs or N-m. Optional 4-20 mA outputs and variable speed drives are available for optimized performance.

Hi-Tech Environmental Inc.
Birmingham, AL
Tel: 800-264-7005

Centrifugal pumps

Click here to enlarge image

The Goulds Models 3180 large-end-suction centrifugal pumps are constructed of stainless steel. Built to both ANSI (3180) and ISO standards (3185), these pumps have flows to 26,000 gpm and heads to 410 feet. A choice of impeller designs allow users to choose high efficiency closed impellers for clean water and chemical feed applications or open impeller for stringy solids found in wastewater streams. An inducer may be added for sludge handling. A wide assortment of sealing arrangements allow the operator to select the perfect seal for the application, from single cartridge seal through dynamic seal.

Goulds Pumps
Tel: 800-734-7867

Hydraulic submersible pump

Click here to enlarge image

The Godwin Heidra® 150VSG hydraulic driven submersible pump handles thick, solids-laden liquids with solids up to 5" in diameter. A remote-actuated “slurry gate” enables the pump to be used as a mixer in applications where sludges are so thick they are initially unpumpable. After mixing to a pumpable consistency, the gate can be closed and the sludge pumped away. Uses include municipal or industrial wastewater treatment plant sludge tank cleaning and emptying.

Godwin Pumps
Bridgeport, NJ
Tel: 856-467-3636

Mixing systems

Click here to enlarge image

Chemineer offers several high-viscosity impellers designed to handle rugged applications. The company’s impeller designs are the result of over five decades of research and applied application experience. Its Double Helical Ribbon Impeller is ideal for high viscosity, laminar flows, effective in heat transfer and efficiently incorporates surface liquids and solids with viscosities over 30,000 Mpa. Its Anchor Impeller is an economical laminar flow impeller offering horizontal flow well-suited for low-liquid-level geometries.

Chemineer Inc.
Dayton, OH
Tel: 937-454-3200


Click here to enlarge image

The Liquid Waste Technology (LWT) Pit Hog 10-40 hp dredge is designed to remove sediments from the bottom of waterways, settling lagoons and ponds. In situ solids are excavated and transported as slurry through a piping system to a remote location. The material excavated is normally land applied, trucked or dewatered. The company is known for its automated and radio remote-controlled dredges, using Bottom SenseTM to protect pond bottoms and liners, Solids SenseTM to maintain delivery of a constant solids density, and other options such as Radio Remote SenseTM, Auto SenseTM, and Lateral SenseTM.

Liquid Waste Technology Inc.
Somerset, WI
Tel: 715-247-5464

Polymer blending

Click here to enlarge image

Fluid Dynamics has introduced the L Series dynaBLEND® polymer blending and activation system. The units feature the patented HydroACTION® non-mechanical, high-energy polymer mixing chamber, with a choice of diaphragm metering or progressing cavity pumps. Control options range from simple manual systems to fully instrumented PLC-based units with an unlimited variety of inputs and outputs.

Fluid Dynamics Inc.
Boulder, CO
Tel: 888-530-7300 Web:

Grinder pumps

Click here to enlarge image

The Moyno 500 Grinder Pumps offer constant, uniform, non-pulsating flow that provides low shearing action for minimum degradation of shear-sensitive materials and low velocity capabilities for effective pumping of viscous fluids. The pumps are suited for public sewage handling installations where gravity flow mains are above the sump or are in remote locations. The pumps are self-priming and have replaceable carbide cutting tips. They are compact, lightweight and offer quiet operation.

Moyno Inc., a unit of Robbins & Myers
Springfield, OH
Tel: 877-486-6966
Web: Web:

AC drive

Click here to enlarge image

The Telemecanique® brand Altivar® 61 AC drive from Schneider Electric offers a wide range of functions for centrifugal pumps and blowers from 1 to 900 HP in water and wastewater plants, including sludge applications. The drive reduces energy costs by adjusting motor speed to the required flow rate.

Schneider Electric Water Wastewater Competency Center
Nashville, TN Tel: 888-778-2733 Web:

Flocculants, coagulants

Click here to enlarge image

Ciba Specialty Chemicals supplies high performance organic flocculants and coagulants for use in sludge dewatering applications. Its ZETAG® products improve conventional dewatering processes by agglomerating fines into larger particles and enhancing solid/liquid separation.

Ciba Specialty Chemicals Corp.
Suffolk, VA Tel: 757-538-3700 Web:

Sludge dewatering

Click here to enlarge image

The Ashbrook Simon-Hartley W Series Centrifuge - incorporating Tomoe technologies - combines 3,200 plus G’s; centrifugally cast stainless steel bowls; sintered tungsten carbide tiles; and patented quasi-axial conveyor design. The company also offers the enclosed Winklepress, which dewaters and helps control odors in one package.

Ashbrook Simon-Hartley
Houston, TX
Tel: 800-362-9041

Filter press

TEFSA, an international designer and manufacturer of industrial dewatering and filtration equipment, has introduced a new, high-yield / fast cycle PFO filter press line. A combination overhead and sidebar unit, the press uses a mixed pack of membrane and recessed plates for greatly reduced cycle time, maximum cake dryness, and increased press capacity.

Scottsdale, AZ
Tel: 800-269-4098

Belt filter press

Click here to enlarge image

The USFilter Radial Wedge Belt Press is a high pressure, 15-roll, 3-meter-wide machine that is capable of producing the highest dry solids in the belt filter press market today. The model BPR 3000 boasts a 725 square foot filtration area.

USFilter Dewatering Systems
Holland, MI
Tel: 800-245-3006

Abrasion resistant lining

Click here to enlarge image

Abresist® linings are used in a variety of applications in the processing of municipal sewage sludge. This includes both incinerators and plants processing the sludge into pelletized fertilizer. For incinerators, the primary application has been in basalt lined pipe for conveying the ash residue which contains a concentrated assortment of abrasive solids. These same solids also cause problems in fertilizer pellet processing.

Abresist Corp.
Urbana, IN
Tel: 800-348-0717

Drying systems

Click here to enlarge image

Komline-Sanderson offers complete biosolids drying systems capable of handling up to 1000 wet tons of wet cake solids per day. The dryers can be designed to use either steam or thermal fluid with heat supplied from the combustion of natural gas, digester gas, landfill gas, or fuel oil. Excess heat from combustion engines or turbines can also be used to heat thermal fluid or produce steam.

Peapack, NJ
Tel: 800-225-5457

Sludge level monitor

Click here to enlarge image

Ametek Drexelbrook’s CCS4000TM Multi-Channel Sludge Blanket Level Monitor uses a field proven algorithm to keep track of effluent quality in up to four separate water and wastewater treatment clarifiers and thickeners. The monitoring system uses ultrasonic technology to measure the compacted sludge level, the lighter rag material above the interface, and clarity loss in the water above the blanket and rag levels. It eliminates worry about the adverse effects of denitrification, septic sludge, washouts, and mechanical breakdown of a rake.

Ametek Drexelbrook
Horsham, PA
Tel: 215-674-1234

Sludge pump

Click here to enlarge image

seepex has developed a new open hopper pump to transport extremely viscous products and dewatered sludge cake. The pump can transport materials up to three million cPs and municipal wastewater sludge with over 50% solids. The new BTHE design uses a feed auger that operates separately from the pump rotor shaft, allowing the auger to operate concentrically. The design reduces bridging inside the pump because the auger completely cleans the casing walls. It also feeds the pumping elements in a more positive manner than augers that rotate eccentrically.

seepex Inc.
Enon, OH
Tel: 937-864-7150

Belt press

Click here to enlarge image

BDP Industries has developed a full scale belt press, 0.9 meters belt width, in a package system that includes all the required accessories: feed pump, polymer make up, polymer/sludge inline mixer, wash booster pump, conveyor and controls all skid mounted with central control panel. The press incorporates the new 3 belt technology; an independent gravity zone and two belt independent pressure zone, curved wedge and foil plow. The pressure zone incorporates a large perforated first roll and four decreasing diameter rolls. Belt tracking is true proportion paddle actuated pivot roll design like full scale models to insure the unit can operate unattended.

BDP Industries Inc.
Greenwich, NY
Tel: 518-527-5417 Web:

Sludge level sensor

Click here to enlarge image

The Markland Model 602 Sludge Level Meter can automate sludge level detection. The meter can be used in clarifiers, tanks, inclined plate clarifiers (Lamellas), SBRs and dissolved air flotation tanks. Corrosion is not a problem with its all PVC probe. Analog, digital and relay outputs are available.

Markland Specialty Engineering
Toronto, Ontario Tel: 416-244-4980

Sponsored Recommendations

Meet the future of MV switchgear

SureSeT new-generation metal-clad. Smarter. Smaller. Stronger.

A digital circuit breaker built for the future

EvoPacT medium voltage digital vacuum circuit breaker

The New Generation of Intelligent MV Switchgear

Step into the future of electrical infrastructure with Intelligent MV Switchgear - where traditional equipment becomes smart, providing real-time data on critical components like...

Switchgear goes digital with SureSeT

Discover what you can do with Square D natively digital MV metal-clad switchgear.