- Long and trusted experience in all industrial segments
- Excellent performance
- Exceeds requirements of international ISO 5199 standard
- Suitable for the most demanding industrial applications
- Unique, patented and superior design features minimize life-cycle costs
- Quick and easy installation, safe operation, easy maintenance and service
Z22 double suction axially split single stage centrifugal pump
High performance for demanding industrial applications
Z22 double suction axially split single-stage centrifugal pumps are used for demanding high-capacity industrial applications to ensure process reliability, high efficiency and low operating costs.
Limited availability. Please contact your local sales representative for more information.
- Clean and lightly contaminated liquids
- Viscous liquids
- Low-consistency fibrous slurries
- Low pressure pulsation pumping applications
Main design features
- Versatile, reliable, high-efficiency hydraulics and material options
- Innovative and reliable hydraulic design to minimize pressure-pulsations
- Innovative shaft sealing solutions for reliable operation and reduced cost
- Reliable, simplified, heavy-duty bearing units with a range of lubrication options
- Double-suction impeller, with split, staggered and skewed vanes for high efficiency and low NPSH values
Key characteristics
Capacities | Up to 17,000 m3/h / 75,000 USgpm |
Heads | Up to 220 m / 720 ft |
Pressures | Up to 25 bar / 362 psi depending on material and size |
Temperatures | Up to 140 °C / 280 °F |
Discharge sizes | From 200 mm / 8 in to 1 000 mm / 40 in |
Maximum speed of rotation | 1 800 rpm |
Documents
Brochures
Data sheets
Applications
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Aerobic digestionIn aerobic digestion in wastewater treatment, microorganisms continue to break down the organic material. These microorganisms need aeration in order to function, and some level of mixing is required to keep the process efficient and reliable. The result is reduced sludge volume and the prevention of odor. Sulzer has highly suitable products such as compressors, aerators and disc diffuser systems to support the process in the aerobic digester tank.
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Anaerobic digestionAnaerobic digestion requires temperature equalization and proper homogenization of the biomass to achieve a high gas production and to avoid sedimentation of organic matters. The surface crusts must be broken and prevention of foam must be managed if there are foaming tendencies. Sulzer can provide efficient and reliable Scaba agitators for digesters with high-efficiency propellers. Muffin Monster™ grinders upstream from the anaerobic digesters condition the sludge before digestion, improving the homogenization of the biomass and protecting the equipment downstream.
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Bio-based process developmentFind and develop efficient process equipment for bio-based products in an agile way with Sulzer as your trusted partner.
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Biological processThe target of the biological process in wastewater treatment is to remove organic, biodegradable substances via the metabolism of microorganisms and related biochemical processes.
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Chemical mixing - sludgeSometimes it is necessary to mix chemicals into the activated sludge before it enters the secondary sedimentation tank. For example, chemicals may be used to perform phosphorous removal on the effluent from the biological process. Many plants use chemicals to improve sludge thickening just prior to the sludge buffer tank.
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Chemical mixing sewageChemicals must sometimes be mixed into the activated sludge before it enters the secondary sedimentation tank. Whenever this done, it is important to achieve an even distribution of the chemicals. Chemicals may be added to perform the chemical removal of phosphorous on effluent from the biological process. In other circumstances, chemicals such as cationic polyelectrolytes with a high molecular weight may be added to improve the quality and settling ability of flocs formed in the activated sludge process.
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Chemical pulp fiber lineProven pumping, mixing and agitation solutions for your cooking, washing, screening, oxygen delignification, bleaching, and storage processes to ensure process reliability, high efficiency, and low operating costs.
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Chemical recoverySulzer’s extensive product portfolio is designed to meet the most demanding hydraulic coverage requirements in your evaporation, recovery boiler, and white liquor preparation processes.
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Chemicals for Pulp Paper and BoardTailored designs, features and material selections to meet the most demanding pumping, mixing, and agitation challenges in the production and preparation of chemicals, tall oil production, and lignin processing.
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Coating and finishingA wide selection of highly efficient and reliable pumps and agitators for your pigment handling and color coating processes.
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Commercial waste disposal from toiletsCommercial wastewater from toilets comprises all sewage water flushed from toilets on commercial, industrial or public properties.
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Commercial wastewater without toilet wasteCommercial wastewater without toilet waste includes drainage and grey wastewater.
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Cooling water pump (CWP) for biomass wasteCooling water pumps for biomass firing applications are typically horizontal axially split or end suction type. Vertical turbine type pumps are also available when required.
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Domestic waste disposal from toiletsDomestic wastewater from toilets comprises all sewage water flushed from toilets or residential properties.
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Domestic wastewater without toilet wasteDomestic wastewater without toilet waste includes drainage and gray wastewater.
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EqualizationThe task of mixing in the equalization process is to blend the wastewater in order to prevent sedimentation, stratification and odor formation. It may also be necessary to mix and homogenize wastewater streams that arrive from different sources. Because the water level in the equalization tanks varies significantly and can sometimes be very low, high demands are placed upon the mixers.
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Industrial water and effluent treatmentSulzer has a deep knowledge in wastewater treatment, and with our wide product portfolio we can now offer energy-efficient and reliable solutions for your water collection, neutralization, flocculation, sedimentation, cooling, aeration, sludge storage, digestion, and dewatering processes.
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Inlet pumping stationInlet pumping stations are somewhat similar to large terminal pumping stations. Depending on the depth of the incoming sewer, the lifting heads can range from around 2 up to 30 meters. To prevent hydraulic shock loads, which negatively impact the biological process, the stations often make use of variable-speed drives and/or several pumps in parallel.
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Mechanical pulp lineSulzer’s ideal product portfolio for challenging pumping, agitation, and mixing operations in refining, grinding, CTMP, screening, reject handling, and bleaching processes.
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Mine water managementSulzer offers a comprehensive portfolio of pumps and process equipment for abrasive and corrosive environments in mine water management applications.
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MiningWhether on the surface or underground, the conditions in mines are harsh. Besides the mud, slurry, stones, and rocks, there are large volumes of water to remove in order to keep production moving. Our dewatering pumps are rugged and ready, taking on the toughest drainage and sludge removal.
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Mixed liquor recirculationWhen denitrification is followed by a physically separated nitrification step, the nitrates formed during nitrification must be recirculated. The nitrates are pumped back into the denitrification step, where the anoxic process splits the nitrate molecules into nitrogen and oxygen. This frees the nitrogen into the air. This application is best served by submersible recirculation pump types ABS XRCP and RCP, the submersible mixed flow column pump type ABS AFLX and the submersible propeller pump type ABS VUPX.
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Outlet pumping stationsOutlet pumping stations are required when the level of the treatment plant is lower than that of the receiving water. This is especially true when discharging into a river, which can rise during heavy rain or flood periods, or into the sea, where the level varies with the tide. Outlet pumping stations may also be needed to compensate for increasing frictional losses in the outgoing pipe at high flows, for example in long sea outfall pipes.
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Paper and board machine and systemsSulzer’s extensive product portfolio is designed to meet the most demanding hydraulic coverage requirements and for all types of liquids, making it ideal for challenging pumping, agitation, and mixing operations in stock preparation, PM approach system, broke system, white water system, vacuum system, condensate system, and shower water system processes.
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Power plantsSulzer’s extensive product portfolio to maximize the performance and reliability of your solid organic fuel biomass power plant, solid industrial or municipal waste fuel biomass power plant, and liquid or gaseous organic fuel biomass power plant processes.
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Pulp drying machineIncreased hydraulic excellence for your approach, cleaning, drying machine, vacuum, broke, and white water system processes.
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Recycled fiber lineEnergy-efficient products with low life cycle costs and a lighter environmental footprint for your pulping, screening & cleaning, flotation, washing, and bleaching processes.
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Return of activated sludgeOutlet pumping stations are required when the level of the treatment plant is lower than that of the receiving water. This is especially true when discharging into a river, which can rise during heavy rain or flood periods, or into the sea, where the level varies with the tide.
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SelectorThe purpose of the selector tank is to control and limit the growth of filamentous bacteria, and then to enhance the sedimentation ability of the sludge. Sulzer provides a number of solutions for creating optimal conditions in the selector.
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Sludge buffer tankThe sludge buffer tank can be used for a variety of purposes. The most common application is the blending and homogenization of highly concentrated primary, secondary or digested sludge. The solution used to mix the sludge itself, or to mix the sludge with the dosed thickening chemicals, depends on the design and volume of the sludge buffer tank. Submersible mixer types ABS XRW and RW, as well as the agitator type Scaba, can be used to provide highly efficient mixing. Positive displacement, progressing cavity transfer pumps and Muffin Monster™ grinders are used for solids reduction and sludge transfer from sludge feed to sludge dewatering process.
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Sludge handling and transferSulzer pumps, mixers, grinders and agitators are used to condition, transfer, blend and handle sludge. Our progressing cavity, positive displacement pump range, provide a near constant flow rate with suction lift capability, for handling all types of non-Newtonian sludge and cake processes, typically demanded within the wastewater treatment plant. Maintain in place features ensure any process downtime due to the change out of wear components is kept to a minimum. The Muffin Monster™ grinders protect the equipment downstream. The sludge conditioned by grinders will not clog valves, heat exchangers, digesters, centrifuges and other equipment on the sludge line.
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Tertiary treatmentTreated wastewater may occasionally require further treatment. Local discharge rules may pose strict limits that cannot be fulfilled by even the most effective process, or a higher quality of effluent may be requested for its reuse. When tertiary treatment is needed, various levels of filtration can be applied, including very fine filtration. Often, however, a final step of mixing and aeration is sufficient to achieve the target. When this is the case, Sulzer's submersible mixer types ABS XRW and RW can be used, along with submersible aerator type ABS TA–TAK and disc diffuser system types ABS PIK, DS and Sucoflow.
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Test equipment rentalRental equipment for textile and bio-based process development initiatives either at customer facilities or Sulzer’s development center.
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Water intakeWater supply is vital for our daily life. To abstract the water at the source, be it the sea, river, lake or dam, water intake pumps are needed. Sulzer offers a range of pumps that are specially engineered for such applications.
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Water supplyMeeting today’s challenges and high requirements within water intake, sedimentation, sludge treatment, fine screening, and water distribution processes.
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Water transportationWater transport pumps are pumping large volumes of water over mostly long distances and high geodetic heights to geographical areas or industries where it is required for different purposes. We offer various configurations according to your needs.
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Wood yardEnergy-efficient products with low life cycle costs and a lighter environmental footprint for your debarking, washing, chipping, screening, and bark and waste streams handling processes.
Related links
Product and services
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ZPP double suction, axially split single-stage centrifugal pumpZPP double-suction axially split single-stage centrifugal pumps are used for demanding high-capacity industrial applications to ensure process reliability, high efficiency, and low operating costs
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Agitators, dynamic mixersSulzer SALOMIX™ and Scaba mixing and agitation technology offers a wide range of products for industrial applications. Side-mounted horizontal and top-mounted vertical agitators, dynamic chemical mixers, and tower and tank flow management products guarantee effective mixing and agitating processes.
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Pump servicesReliable and efficient pump operation is critical for your business. Therefore you need a service partner that can respond fast and flexibly. Our pump services are second to none and provide solutions that help you to improve your processes and business performance.
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Original pump spare partsOriginal spare parts machined to the correct tolerances and clearances give a perfect fit first time, every time. Our commitment to continuous improvement often allows us to supply parts with improved features, thus enhancing performance, extending equipment life, while reducing maintenance costs.
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Service kitsWhen your equipment needs to be repaired you shouldn’t have to worry about spending valuable time searching for the right parts – or even worse, finding out that some small but vital parts are missing. With Sulzer service kits you get everything you need in one package.
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Sulzer mechanical sealsSulzer mechanical seals are strong by design and have been proven very reliable in various pumping applications.
Industries
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Chemical processingOur solutions for the chemical processing industry include pumping, separation and mixing, as well as services for rotating equipment and infrastructure. We offer experience in classical chemical, plastic, and pharmaceutical production as well as in processing renewable materials.
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FertilizersOur pumps, mixers and agitators provide durability and reliability for fertilizers production as well as for corrosive and abrasive liquids and high gas content. Our specific industry experience also includes separation processes and servicing of pumps, compressors, turbines, and motors.
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Mining and metalsLong experience and detailed knowledge of metals and mining applications with different raw materials makes Sulzer a reliable pump supplier for these industries.
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BiofuelsBiofuels from renewable sources show great potential as sustainable transportation fuel. Based on our experience in demanding processes, we work with customers to develop advanced pumping, mixing, and distillation solutions for the production of biofuels, from pilot to commercial-scale installations.
Talk or write to our experts to find your best solution.