ANDRITZ
About us
ANDRITZ is a leader in mechanical and thermal technologies, automation solutions, and services for solid/liquid separation, pumps and more. Our comprehensive range of equipment covers every process step started from screening, pumping, thickening, dewatering, drying, or combustion. Complemented by comprehensive services and automation and digitalization solutions for various industries, the customized, innovative solutions focus on minimizing the use of resources and achieving highest process efficiency, thus making a substantial contribution towards sustainable environmental protection.
Products
Split case pumps from the ASPP and ASPC series
Split case pumps from the ASPP and ASPC series operate in water treatment and water supply systems as well as in irrigation, flood control, and desalination. They can also be used as circulation water or cooling water pumps for power stations, industrial plants, and district heating networks. Designed with a double-flow radial impeller and in-line casing, the pump can be installed horizontally or vertically (in the case of horizontal installation, the motor can be placed on the left and/or right). All pumps are fitted with a double-flow radial impeller which achieves very favorable NPSH values.
Vertical volute pump from the VVP series
These pumps operate in a wide range of industrial applications. In the water sector, they function as water transport pumps for irrigation, drainage, and water supply pumps for drinking and industrial water suppliers. Additionally, they can be used as cooling water pumps for thermal power stations and as seawater intake pumps for desalination plants. These pumps can transport many different media. Depending on the medium concerned, the choice of material and suitable finishing are the determining factors for functioning and stability of the pump. Different materials are used depending on the service conditions and customer requirements: cast iron, cast steel, non-alloyed and low-alloyed steel grades, stainless CrNi steel grades, duplex and super duplex steel grades. The hydraulic dimensioning and design of the volute casing depends on the specific output characteristics. Optimum flow is achieved in the volute thanks to its individual shaping, thus also achieving a high level of efficiency. The volute casing is manufactured as a concrete or metal volute. The metal volute is a welded structure consisting of several segments and can be embedded in concrete as an option. This design is used primarily for larger delivery heads if a solution with a concrete volute is no longer feasible due to strength requirements.
Vertical turbine pumps from the VTP series
One of the greatest strengths of ANDRITZ vertical turbine pumps is their modular design and the efficiency it delivers. The pump is built from standardized, separate modules that can be easily replaced when necessary. In addition, the VTP offers a long service life and requires minimal maintenance. Another key advantage of this pump series is its flexible discharge configuration. Depending on the application and plant layout, the discharge flange can be positioned either above or below floor level.
Real time polymer optimization with Metris addIQ
ANDRITZ Metris addIQ RheoScan and Metris addIQ ARGOS are AI powered optical measurement systems designed to automatically optimize polymer consumption and stabilize sludge thickening and dewatering performance. By continuously monitoring real-time process conditions—such as sludge viscosity, or centrate/filtrate quality—they adjust polymer dosage and machine settings 24/7, ensuring that equipment always operates at peak efficiency without the need for continuous on-site supervision. RheoScan provides fully automated polymer control for belt filter presses, and gravity belt thickeners, helping to prevent overdosing, overspills, and fluctuations in cake dryness. ARGOS brings the same intelligence to decanter centrifuges and screw presses, detecting changes in centrate/filtrate quality and adapting polymer dosage accordingly. Both systems are compatible with equipment from any manufacturer and suitable for all municipal and industrial sludge types. With polymer savings of up to 40% for belt presses and up to 25% for decanter centrifuges and screw presses, they deliver rapid payback, higher process stability, and long-term cost reductions—essentially acting as a smart, always-present operator that keeps the process optimized around the clock.
Sludge drying solutions
ANDRITZ sludge drying solutions offer the industry’s widest range of safe, flexible, and energy efficient technologies for producing high quality dry solids at the lowest possible cost. With proven systems such as belt, paddle, fluid bed, and drum dryers – all compliant with ATEX/NFPA standards – ANDRITZ supports municipalities and industries in achieving reliable, high performance drying tailored to any heat source or downstream application. With more than 170 municipal sludge drying references, these solutions are designed for maximum safety, efficiency, and long-term operational stability. Whether the goal is to reduce disposal volumes, utilize low grade waste heat, or meet demanding regulatory requirements, ANDRITZ develops customized configurations to suit plant needs worldwide. From highly automated paddle drying systems to low temperature belt dryers or compact fluid bed and drum solutions, each technology ensures consistent product quality, low emissions, and optimized energy use. ANDRITZ supports customers throughout the entire process – from testing and engineering to full turnkey delivery – ensuring reliable performance and the best return on investment at every step.
Sludge dewatering solutions
ANDRITZ sludge dewatering solutions are designed to achieve high dry solids content with maximum efficiency and reliability, even under demanding operating conditions. By drastically reducing water content in just minutes, these systems help lower energy usage, reduce polymer consumption, and ensure stable, trouble free performance. From large municipal facilities requiring long-term, high-capacity operation to industrial sites or mobile applications, ANDRITZ provides a broad portfolio of technologies tailored to each customer’s needs. The range includes robust decanter centrifuges, fully automated screw presses, versatile industrial filter presses, and high performance belt presses. Each solution is engineered for durability, low operating costs, and consistent high-quality cake production. Whether boosting process reliability, ensuring safe operation in ATEX environments, or delivering mobile containerized systems for temporary deployment, ANDRITZ supports decades of dependable dewatering performance. The result: reduced operating costs, higher efficiency, and long-term process stability across all sludge treatment applications.
Sludge thickening solutions
ANDRITZ sludge thickening solutions are designed to maximize water removal efficiency while reducing chemical consumption and overall operating costs. By focusing on optimal gravity thickening for primary sludge and highly efficient conditioning of secondary sludge, these solutions help minimize the use of flocculants and improve downstream dewatering performance. ANDRITZ offers complete turnkey support—from equipment and process design to testing and consulting—to ensure the right combination of technologies for each plant. The thickening portfolio includes versatile decanter centrifuges, reliable drum thickeners, and high‑capacity gravity belt thickeners. Built for durability, flexibility, and easy operation, these systems deliver consistent solids concentration with minimal supervision and low energy demand. Whether for pre‑digestion, pre‑dewatering, or volume reduction before transport, ANDRITZ thickening technologies ensure stable performance, small footprint requirements, and efficient water recovery, supporting smooth and cost-effective sludge treatment processes.
Filtration/Tertiary treatment solutions
ANDRITZ tertiary treatment solutions provide the final polishing step needed to meet today’s strict discharge limits and water reuse requirements. As primary and secondary treatment alone are no longer sufficient to reliably remove phosphorus, suspended solids, and remaining pollutants, advanced filtration becomes the critical final barrier to ensure compliance and high effluent quality. ANDRITZ systems are designed to boost plant performance by reducing the load on downstream processes, minimizing energy and chemical consumption, and delivering stable, high-quality treatment results. The portfolio includes gravity underdrain filters, continuous sand filtration, high-capacity disc filters, and mobile filtration units for flexible or temporary needs. These technologies are engineered for energy efficiency, durability, and straightforward integration into existing facilities. Whether for municipal plants or industrial sites with limited space, ANDRITZ solutions offer reliable solids removal and consistent filtration performance with minimal maintenance and low operational effort. In modern wastewater treatment, tertiary filtration is where sustainability, compliance, and long-term operational reliability come together.
Centrifugal pump from the ACP Series
The ANDRITZ ACP series single-stage centrifugal pumps feature a wear-resistant design, different impeller solutions making them ideal for clear and conveying slightly contaminated media with up to 8% solids. With low axial thrust and open channels, they serve a wide range of applications in water supply, wastewater treatment, desalination, irrigation, and drainage. These pumps are also suitable for industries like pulp and paper, mining, offshore, power, food, and chemicals. Their modular design ensures high availability and reduces spare part inventory.
High-pressure pump from the HP Series
Discover the power and versatility of ANDRITZ high-pressure pumps from the HP series, where we are setting new standards in robustness and efficiency. These multi-stage ring section pumps are specifically designed for vibration-free operation and high output pressures. Thanks to the additional axial thrust balancing provided by a balancing piston, and a shaft sealing with a mechanical, our pumps offer unparalleled reliability. They boast impressive technical specifications: a delivery head of up to 400 meters, a flow rate of up to 950 cubic meters per hour, pressure capabilities of up to 40 bar, a temperature range up to 120 degrees Celsius, and power up to 1300 kW together with the best efficiencies available.
Submersible centrifugal pump from the ASCP Series
The ANDRITZ ASCP series is a high-efficiency, single-stage submersible centrifugal pump designed for optimal conveyance of pre-cleaned wastewater. With efficiencies up to 80%, it outperforms most wastewater hydraulics on the market. Its modular design reduces spare part inventory, as many components are shared with standard ANDRITZ pumps. The pump features high-quality mechanical seals for motor protection, along with a monitoring system to prevent damage.
Pre-treatment / Screening solutions
ANDRITZ pre-treatment solutions ensure reliable and efficient solids removal at the very first stage of wastewater treatment. Instead of viewing screening as a standalone component, ANDRITZ integrates screens, grit removal, and compacting technologies into complete solutions that protect downstream equipment, improve biological treatment performance, and reduce environmental impact. With screening efficiencies of up to 99%, the portfolio covers everything from static and coarse screens to fine screens and rotating drum units, suitable for small village installations as well as large metropolitan plants. The range includes simple, low-maintenance static screens, high-performance coarse and fine screens from the Aqua-Screen family, and robust multirake systems for demanding applications. Modular designs and self-cleaning features ensure low headloss, high capture efficiency, and minimal operating costs. For fully enclosed and space-saving installations, Girapac and Girasieve rotating drum screens provide complete pre-treatment in a compact, plug-and-play unit, including washing, conveying, compacting, and optional bagging of screenings. To complete the pre-treatment line, the SpiroGrit grit classifier and washer deliver high-efficiency grit removal while minimizing organic content, available also as a combined compact unit requiring no civil works. Together, these solutions offer reliable separation performance, easy maintenance, and long-term operational stability—supporting cleaner water, smoother plant operation, and compliance with stringent treatment standards.