Andersson Water Sweden AB
About
Andersson Water Sweden AB is a Swedish manufacturer with over 30 years of specialization in wastewater screening and screenings handling equipment, exporting globally from its production facility where all products are fabricated in stainless steel with full bath pickling, passivation, and electropolishing to ISO and CE standards. The company offers eight distinct screen models covering the full range of headworks applications. The flagship PSS Progressive Stair Screen delivers 80 to 90 percent capture at 2 to 3 mm bar spacing with capacities from 10 to 10,000 liters per second and requires no spray water for cleaning, while the ASS Andersson Stair Screen provides traditional step-screen operation for shallow channels. Complementary models include the CRS Chain Rake Screen for deep channels with 4 to 100 mm bar spacing, the CDS Channel Drum Screen for fine rotary screening, the TFS Through Flow Screen and CFS Center Flow Screen for medium and specific flow configurations, the SSS Spiral Sieve Screen combining screening and washing, and the SWS Spiral Weir Screen for overflow duty. Downstream equipment includes the SSC Spiral Screw Conveyor, WPC Wash Press Compactor, RPC Ram Press Compactor, and BPS Back Pressure Shredder for screenings handling. Grit treatment is covered by the CGT Circular Grit Trap, RGT Rectangular Grit Trap, GWC Grit Washer Classifier, and GSC Grit Separator Classifier. Combined units such as the CCU Compact Combi and SCU Small Combi integrate screening and grit removal in single structures for smaller installations. Major Swedish treatment plants including Stockholm Henriksdal, Kappala, Gothenburg Rya, and Malmö Sjölunda operate Andersson screens at 2 to 3 mm spacing.
Key Products
Flagship step screen with 1-6mm bar spacing, 10-10,000 l/s capacity, over 80-90% capture rate, self-cleaning with no spray water needed, marketed as the world's strongest progressive step screen.
Traditional step screen for shallow channels with 1-6mm bar spacing for wastewater pre-treatment screening.
Multi-rake bar screen with 4-100mm bar spacing and discharge heights up to 80m for coarse to fine screening in deep channels.
Rotary drum screen installed in channels for fine screening of wastewater, capturing solids on the drum surface.
Band-type through-flow screen for medium to fine screening applications in wastewater treatment headworks.
Center-feed screen design for screening wastewater in specific channel configurations where flow enters from the center.
Spiral-type sieve screen for fine screening and washing of screenings, combining screening and transport in a single unit.
Weir-mounted spiral screen for screening overflow and stormwater flows at wastewater treatment plants.
Shafted or shaftless screw conveyor for transporting and dewatering screenings from screens to disposal or further processing.
Washing, pressing, and compacting unit that cleans screenings, removes organics for return to the treatment process, and reduces volume for disposal.
Ram-type compactor for dewatering and volume reduction of screenings from wastewater screens.
Screening shredder that grinds and conditions screenings for downstream processing, disposal, or return to the treatment process.
Circular design grit removal unit for inorganic grit separation from wastewater using centrifugal and gravity forces.
Rectangular aerated or non-aerated grit chamber for grit removal in wastewater treatment, available in multiple configurations.
Grit washing and classifying unit that cleans, dewaters, and separates grit from organic matter, producing clean, low-organic grit for disposal.
Grit separation and classification unit for efficient removal and grading of grit particles from wastewater.
Receiving and thickening unit for septic tank sludge with integrated screening and grit removal capability at wastewater treatment plants.
Combined screening and grit removal unit in a single compact structure for small to medium wastewater treatment plants.
Small combined screening and grit removal unit for decentralized and small wastewater systems.
Chain-driven scraper and skimmer for sedimentation tank sludge collection and scum removal.
Lightweight plastic chain scraper system for sludge collection in clarification tanks, resistant to corrosion.
Flap gate for flow control, tide protection, and overflow prevention in wastewater and stormwater systems.
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