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&+ Product Showcase W~P Sludge Handling Equipment Additional free information on any of these items can be obtained by circling the appropriate number on the reader service card. Filter Press Diagenex Inc. Pleasanton, Calif. Continually increasing costs of wastewater treatment have become a major economic concern. Diagenex Inc. can resolve that concern by providing filter presses, which are designed and constructed for long life and low maintenance, resulting in an economical investment. All components of the Diagenex filter press are manufac- tured to exacting tolerances with the best materials available for long-lasting performance. Standard presses consist of a fabricated steel frame, polypropylene filter plates containing filter cloths woven from polypropylene thread, polyvinyl chloride (PVC) plumbing, and a specially designed air-over hydraulic closure system. Circle 101 on reader informationcard Large Filter Presses Avery Filter Co. Westwood, N.J. Avery Filter has announced expansion of its product line to include units designed for 1500 mm filter plates. The 1500 mm by 150 mm unit will provide up to 4000 ft2 of filter area and more than 250 ft3 of cake capacity. These large Avery filter presses are available with conventional recessed-chamber filter plates and with the newer WS variable volume concept often called dia- phragm or membrane-filter plates. MembraneDia- phragm technology is said to produce filter cakes with up to 75% solids content in one half the cycle time of conventional filter presses. Chamber plates are con- structed of heat- and chemically-stabilized polypro- pylene. The new 1500 mm units are available in either conventional sidebar construction or as dual overhead sidebar, fabricated steel designs, which simplify plate handling. Double-acting hydraulic cylinders open and close these automated Avery filter presses, which operate at pressures up to 225 psi. A fully mechanized plate shifter discharges the filter cake into various means of cake-handling systems including conveyors. Circle 102 on reader information card METAL FINISHING 0 JANUARY 1994 0 Copyright Elsevier Science Inc. 21

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  • * * & + @+Q===/5 +(E--- Product Showcase W ~ P Sludge Handling Equipment Additional free information on any of these items can be obtained by circling the appropriate number on the reader service card.

    Filter Press Diagenex Inc. Pleasanton, Calif.

    Continually increasing costs of wastewater treatment have become a major economic concern. Diagenex Inc. can resolve that concern by providing filter presses, which are designed and constructed for long life and low maintenance, resulting in an economical investment. All components of the Diagenex filter press are manufac- tured to exacting tolerances with the best materials available for long-lasting performance. Standard presses consist of a fabricated steel frame, polypropylene filter plates containing filter cloths woven from polypropylene thread, polyvinyl chloride (PVC) plumbing, and a specially designed air-over hydraulic closure system.

    Circle 101 on reader information card

    Large Filter Presses Avery Filter Co. Westwood, N.J.

    Avery Filter has announced expansion of its product line to include units designed for 1500 mm filter plates. The 1500 mm by 150 mm unit will provide up to 4000 ft2 of filter area and more than 250 ft3 of cake capacity. These large Avery filter presses are available with conventional recessed-chamber filter plates and with the newer W S variable volume concept often called dia- phragm or membrane-filter plates. MembraneDia- phragm technology is said to produce filter cakes with up to 75% solids content in one half the cycle time of conventional filter presses. Chamber plates are con- structed of heat- and chemically-stabilized polypro- pylene. The new 1500 mm units are available in either conventional sidebar construction or as dual overhead sidebar, fabricated steel designs, which simplify plate handling. Double-acting hydraulic cylinders open and close these automated Avery filter presses, which operate at pressures up to 225 psi. A fully mechanized plate shifter discharges the filter cake into various means of cake-handling systems including conveyors.

    Circle 102 on reader information card

    METAL FINISHING 0 JANUARY 1994 0 Copyright Elsevier Science Inc. 21

  • High Pressure Filter Presses Netzsch Inc., Filter Press Div. Exton, Pa.

    Netzsch high pressure (up to 225 psig) filter presses are a highly efficient method of dewatering metal hydroxide sludge, producing solid concentrations up to 85% and solid capture rates up to 99.95%. With cake capacities ranging from 0.5 to 600 ft3/cycle, Netzsch presses are available with a variety of plate designs including membrane, recessed chamber and plate, and frame. Plate sizes range from 470 mm x 470 mm to 2 m x 2 m. Auxiliary systems include sludge feed, squeeze, precoating, acid wash, chemical conditioning, cloth washing, and electrical controls. Fully automatic presses can be supplied.

    Circle 103 on reader information card

    Sludge Dryer Lanco Corp. Grand Rapids, Mich.

    Lanco Corp. is continuing to expand its waste treatment product line, and is pleased to announce the introduction of a new batch-type sludge dryer. The unit is 3ffered in 3, 6, and 10 ft3 capacities, and is electrically heated. The dryer is sized for under-press operation and features all stainless steel wetted parts. It is capable of ?rodwing up to a 75% reduction in both volume and weight.

    Circle 104 on reader information card

    Metal Hydroxide Sludge Dewatering Star Systems Tmmonsville, S. C.

    Star Systems Filtration introduces the PolyPress for dewatering metal hydroxide sludges. The PolyPress utilizes recessed chamber polypropylene plates that are lightweight, inexpensive, easy to discharge, and resistant to most chemicals. The caulked and gasketed design makes the PolyPress virtually leak free resulting in a clean working environment. Star Systems offers models ranging from a 470 mm economy model to a 1200 mm semi-automatic model. The company also provides all necessary options such as pumping systems and cake discharge systems as well as ancillary equipment and limited systems design.

    Circle 105 on reader information card

    Sludge Dryer D. R. Sperry & Co. North Aurora, Ill.

    Sperry Hydrymax Sludge Dryers are designed to economically handle the treatment of wastewater sludge. These innovative units are engineered to efficiently separate liquid from waste for easy disposal. The complete dehydration process can reduce the bulk weight and volume by more than 75%. Cost-efficient Hydrymax Dryers are available in four continuous-feed models capable of processing from 1/3 to 6 ft3/hr.

    Circle 106 on reader information card

    22 METAL FINISHING JANUARY 1994

  • Sidebar Filter Press Hoesch Industries Inc. Landing, N. J.

    A hydraulically-operated, fully-automatic plate-shift- ing mechanism, pneumatically-controlled drip tray, and air blow-down manifold are among the many automation features offered with the new Hoesch 100-psi and 225-psi sidebar filter-press systems. Automatic plate shifting minimizes the need for operator presence during the cake discharge cycle by automating plate separation and cake dump. Additionally, the plate shifting mechanism can be retrofitted to a wide range of sidebar filter presses. Hoeschs sidebar presses range in size from 1500 mm down to 250 mm. Each press is custom designed and manufactured to meet specific dewatering needs includ- ing automated valves, process pumps, material handling, sludge conditioning, PLC-control systems, etc.

    Circle 107 on reader information card

    Continuous Sludge Dryer Industrial Filter & Pump Mfg. Co. Cicero, Ill.

    The Type 690A continuous sludge dryer dehydrates sludges produced by filter presses, centrifuges, pressure- leaf filters, vacuum filters, and secondary clarifiers. It uses an indirect heat transfer system designed to continuously process and reduce wet sludge cake to a granular form. The sludge cake is channeled from a holding hopper to a processor where it is homogenized and then extruded onto an endless stainless steel conveyor belt. As the belt and sludge move through the heat transfer chamber, water vapor is drawn off by an exhaust blower, and the heated supply air recirculated throughout the system. A muffle chamber shields the sludge from direct contact with the heated air. Belt speed is variable to permit a choice of sludge dryness.

    Circle 108 on reader information card

    Water Evaporator/Sludge Dehydrator Fenton Environmental Technologies Coleman, Texas

    Fen-Tech is pleased to introduce a unique, combination water evaporator/sludge dehydration system, which is designed to efficiently evaporate process water and dehydrate residue that settles to the bottom of the evaporation tank. The evaporator utilizes submerged serpentine tubes, which are heated by a gas-fired burner. The water is injected into the system through a stainless steel water preheat tube, which is routed through the heated water, coiled through exhaust gases of the burner beneath the preheat plate and then, released across the top of the preheat plate before being introduced into the main reservoir. During the evaporation process, residue will gradually build up in the sloped-bottom evaporator tank. When this requires discharging, simply drain into the optional electric-heated dehydrator located beneath the evaporator. When the water has been evaporated and the solids dried, empty the dry powder into a receptacle for disposal or reclamation. Units are available with all wetted components constructed from coated mild steel or several different stainless alloys.

    Circle 109 on reader information card

    METAL FINISHING JANUARY 1994 23

  • Circle 110 on

    Gravity Filtration System Serfilco Lfd. Northbrook, 111.

    Serfilco offers an easy-to-install Disposable Fabric Filtration system, which features continuous, uninter- rupted flow for filtration of treated plating waste and effluent from fume scrubbers, parts washers, process or cooling water, industrial wastewater, etc., at low cost. Additional applications include water wall spray booths, phosphating solutions and machine tool coolants. The gravity filtration system is assembled of corrosion- resistant parts suitable for the application. Carbon steel, stainless steel, and plastic construction are available. A float switch energizes an electric or air motor, which drives the conveyor to advance spent media, and introduces fresh media to the influent stream. Separated solids are collected along with the spent media for disposal in a landfill or by incineration.

    reader information card

    Solvent Extractor DSC Environmental Co. Diamond Bar, Calif.

    DSC Environmental Co. and the Intervac Corp. have joined forces to develop a new Solvent Extractor system, which removes the hazardous solvents from all forms of paint. This 100% closed-loop system is capable of processing up to 55 gal of liquid, sludge, or solid at a time and conveniently fits on a floor space of only 2 x 10 ft. With a push of the start button, the system will complete the processing cycle in approximately 4 hr. By then, the solvents have been recovered and collected into a 5-gal tank and the remaining waste is now safe for regular landfill disposal. This new Solvent Extractor system can save on disposal costs up to four to six hundred dollars per barrel while the recovered solvent can be recycled.

    Circle 111 on reader information card

    Filter Press Cloths/Sludge Disposal Bags A l b a Inc. Holland, Mich.

    Albax Inc. offers a complete line of filter press cloths, sludge disposal bags, and filter press accessory items. The company manufactures replacement cloths for all filter presses, maintaining an extensive stock of caulked, gasketed, recessed chamber (CGR) cloths for same day shipment. Albax also has the capability and commitment to manufacture less standardized cloths with minimum turn-around time and at manufacturer-direct prices. Sludge disposal bags are economical alternatives to the use of barrels for storage and transport of sludge. The bags are DOT approved for F006 and other sludges and are used for both wet and dried sludge. Auxiliary items consist of O-ring stock, caulking hammers and wedges, and cake removal spatulas, items allowing for smoother operation and maintenance of filter presses.

    Circle 112 on reader information card

    24 METAL FINISHING JANUARY 1994

  • Paint Sludge Removal for Multiple Paint Booths Mars Tech New Cifyl N. K

    Mars Tech Centrix systems are designed to apply one fully automatic centrifuge to continuously remove paint sludge from multiple paint booths in a time-shared mode. The systems are ideal in a multiple paint booth operation when paint overspray in individual booths is low enough that a full automatic centrifuge is not economical. All Centrix systems include one fully-automatic centrifuge, main control panel, automatic valves, pumping system, and booth sequencer control. The systems are customized to include automatic feeding of the paint detackifying chemicals in the booth water along with booth agitation systems, including pumping, eductors, sweep nozzles, pusher nozzles, foam suppress nozzles, automatic valves, and level switches. The units are prefabricated on a compact skid before shipment from the factory for easy installation on site.

    Circle 113 on reader information card

    Filter Press Environmental Control Systems lnc. Cransfon, R. 1.

    Environmental Control Systems Plate-and-Frame Filter Presses de- water wet sludges to one-tenth the original volume for much lower disposal costs. Manual units are available from 0.3-6.0 ft3 and fea- ture air blowdown and a two-speed, self-retracting hydraulic pump sys- tem. Automatic air-over-hydraulic closure systems are available in sizes from 1 to 20 ft3. Wide, movable drum chutes and self- dumping hoppers of steel or poly- propylene keep the area around the unit clean and dry.

    Circle 114 on reader information card

    Spray Booth Waste Removal Binks [email protected] Co. Franklin Parkl 111.

    Binks introduces the new Centri- Clean Sludge Dewatering System. The Centriclean can reduce dis- posal costs of water-wash booth sludge by as much as 85%. Using centrifugal force up to 800 times the force of gravity, the Centriclean dewaters and compacts paint sludge into a dry cakelike form. All that needs to be disposed of are the solid cakes instead of barrels filled with mostly water. Easy to install and operate, both manual and automatic Centriclean models drastically re- duce booth maintenance and down- time.

    Circle 115 on reader information card

    Sludge Extractor Barreft Centrifugals lnc. Mrcester, Mass.

    Sludge extractors from Barrett Centrifugals Inc. recover oil and coolant from the sludge that collects in sumps, tanks, or is removed by a drag-out conveyor. Two sludge ex- tractor models are available to meet any operating requirement. Model SES is designed for general condi- tions and handles most types of sludge from machining operations. Model SE is designed for coarser sludge such as rough grinding swarf or scale from quench tanks.

    Circle 116 on reader information card

    METAL FINISHING JANUARY 1994 25

  • Centrifuge Sanborn Technologies Wrenfham, Mass.

    Sanborn has introduced the economical Liqua Pac 11, a high-solids-capacity centrifuge that can process up to 30 gal/min of liquid and offers solids separation to 5 microns. The new unit offers a unique quick-clean bowl with a liner, which is easily accessed without the use of tools. Additionally, drier solids are removed from the unit through the automatic discharge of liquid before the sludge removal process begins-a major product enhancement over most manual centrifuges. Available in a wide range of configurations and flow rates, the units can be used for applications including clarification of oils, removal of ceramic solids in liquids, separation of vibratory solids from water wastes, and removal of grinding solids from manufacturing operations.

    Circle 117 on reader information card

    Low Temperature Sludge Dryer JWI Inc. Holland, Mich.

    The new JWI 5-201,J-203,J-205, and 5-210 J-Mate batch dryers are efficient, economical, and environ- mentally sound dry-air systems. They are designed to further reduce filter cake weight and volume for the final step in reducing metal hydroxide sludge disposal costs. Ruggedly built of stainless steel for long service life, they operate on a fully automatic processing cycle that requires minimal operator at- tendance. The average water re- moval rate ranges from 5-50 lb/hr of water.

    Circle 118 on reader information card

    Filter Press with Pneumatic Plate Shifter Duriron Co. Inc., Filtration Systems Div. Angola, N.Y

    The Durco EP Filter Press fea- tures a pneumatically operated semi-automatic plate shifter with center single-point pickup for plate- shifting stability. Center-point over- head shifting minimizes risk of damage or injury during plate shift- ing. Pneumatic over hydraulic oper- ation is ideal for explosion-proof environments and minimizes en- ergy consumption. Designed to be serviced in less than one hour, the unique operator-shift bar frees hands during plate shifting.

    Circle 119 on reader information card

    Paint Overspray Removal U.S. Centrifuge Indianapolis

    The fully automatic, self-clean- ing centrifuge continuously re- moves suspended solids from in- dustrial process fluids, without the use of consumable filter media. The system uses centrifugal force to continuously dewater, compact and discharge relatively moisture-free solid cakes, allowing extended reuse of process fluids. Separated and compacted solids are dis- charged to a hopper or 55-gal drum placed under the machine.

    Circle 120 on reader information card

    26 METAL FINISHING JANUARY 1994

  • Filter Media Lenser Filter Media Lakewood, N.J.

    Lenser America Inc. has introduced a broad new line of filter media designed and manufactured to optimize flow rate, filtrate clarity and cake release while maximizing cloth life. Lenser routinely meets media needs for filter plates, pressure leaves, disk segments, rotary drums, filter tubes, or strainers with a broad material selection of synthetic and natural-woven fabrics including polypropylene, polyester, polyethylene, nylon, cotton, and felts in a variety of fabric weights and mesh sizes. Monofilament, multifilament, or spun fibers in plain, twill weave, or sateen styles are available as well as special threads and sewing configurations. Standard and special finishes include heat-set, scoured, calendered, and single and double glazed.

    Circle 121 on reader information card

    Sludge Handling Systems Met-Chem Inc. Cleveland

    Met-Chem Inc. manufactures equipment for handling all types of industrial sludge. A system can be designed to treat the waste solutions to generate the sludge, which can then be collected and thickened by a parallel-plate clarifier, followed by a filter press, and then further dried by a sludge dryer. The equipment can be built in modules for ease of installation or field installed in the customer's plant.

    Circle 122 on reader information card

    remium grade fine silver. Anode forms include flat plate, nugget, ball, gum-drop

    silver cyanide. Look to the leaders for a full range of technical assistance, fabrication and refining services.

    Industrial Products Group 1770 Kings Highway, Fairfield, CT 06430 203-259-8321 Fax 203-259-8264

    Circle 030 on reader information card

    METAL FINISHING JANUARY 1994 27