[ Product listing ](/en/solutions/technologies " Product listing") #### Hydrotech™ Drumfilter is a patented filtration technology that offers up to 98% suspended solids removal for many wastewater and drinking water applications. [Contact an expert](https://www.veoliawatertechnologies.com/en/contact) [Overview](#1) [Applications](#2) [Services](#3) [Product range and resources](#4) [Contact](#5) [Case Studies](#6) ## Overview Hydrotech™ Drumfilter is a self-cleaning, mechanical filtration system specially designed for suspended solids removal in high throughput water treatment installations. It is suitable for use in multiple applications, including [stormwater management](/en/applications/stormwater-management "Stormwater management"), [industrial](/en/applications/industrial-wastewater-treatment "Industrial wastewater treatment") and [municipal wastewater treatment](/en/applications/municipal-wastewater "Municipal wastewater treatment") and raw water inflows at [drinking water treatmen](/en/applications/drinking-water "Drinking water")t plants. It uses a combination of high-quality materials and patented processes resulting in a market-leading filtration system with over 7,000 units sold worldwide. ### How does Hydrotech Drumfilter work? Hydrotech Drumfilter uses a microscreen filter and has demonstrated **98% effectiveness in suspended solids removal.** It allows continuous filtration during the backwash of the filter screens, so no external water source is required. Influent flows by gravity into the center of the drum, passing through the filtration media. Solid particles are separated from the water due to the specially designed, patented cell structure of the filter panels. As solids accumulate on the drum filter panels, the water level rises, triggering a level sensor that automatically initiates the filters' backwashing. The backwash nozzles wash solids off the filtration media using filtered water while the drum rotates. **Hydrotech Drumfilter works without pressure and full filtration capacity is continuously maintained and automatically controlled, even during backwash.** It is robustly designed with few moving parts to ensure long life and low maintenance costs. Solids are collected in the sludge tray and transported out of the system by gravity through the sludge/backwash outlet for further treatment. ### Hydrotech Drumfilter unique construction The drum is constructed in sections, each with up to six filter panels, depending on the diameter. The unique filter panels simplify both the replacement and change out of the filters. This helps maintenance and makes it **easy to adapt the filter to the flow capacity and performance requirements of filtration.** The drum and tank are made of stainless or acidproof steel. For extremely corrosive surroundings, special alloys or titanium is used. The filter panel structure, bearing wheels, and main shaft bearing are made of resistant plastics and the filter cloth is made of polyester or stainless steel. [Do you have a question about this technology? Ask an expert.](https://www.veoliawatertechnologies.com/en/contact) ![Process description of the Hydrotech Drumfilter](/sites/g/files/dvc3601/files/styles/media/public/image/2025/04/Hydrotech-Drumfilter-diagram.jpg.webp?itok=L-LQmnhQ) ## Features and benefits ![Piktogramm für Produktivität](/sites/g/files/dvc3601/files/styles/default/public/image/2022/08/Produktivitaet.png.webp?itok=-1ewzHvF) **High quality** - Robust stainless steel construction. - Filter panel lifespan of more than 10 years. - Extensive quality assurance. - Small footprint. - Patented filter panels. ![Piktogramm für Leistungssteigerung](/sites/g/files/dvc3601/files/styles/default/public/image/2022/08/leistung.png.webp?itok=7e7xPUfB) **Proven performance** - Suspended solids removal up to 98%. - Continuous filtration during backwash with no external water source required. ![](/sites/g/files/dvc3601/files/styles/default/public/image/2023/02/Maiintenance-1.png.webp?itok=iuzTiKQy) **Minimum maintenance** - Simple wear parts with replacement without filter drainage. - Filter panel change is possible while the unit is in operation. - All maintenance parts, including lubrication points, are accessible from the walkway. - Only one pump and one drive engine per filter. ![](/sites/g/files/dvc3601/files/styles/default/public/image/2023/02/Cost-efficiency-picto.png.webp?itok=iKFHyYJ-) **Best economic value** - Self-cleaning backwash nozzles. - Strong woven polyester cloth. - Low installation, operation and maintenance costs. ## Applications [ ![women and kid drinking water](/sites/g/files/dvc3601/files/styles/content_push_teaser/public/image/2021/08/_DSC7283.jpg.webp?itok=ZQF59ecm) ](/en/applications/drinking-water "Drinking water") Solution [Drinking water](/en/applications/drinking-water "Drinking water") Reliable, high-quality drinking water plants and systems. [LEARN MORE](/en/applications/drinking-water "LEARN MORE") [ ![Two workers wearing helmets, masks and gloves in a wastewater treatment plant. © Médiathèque VEOLIA - Jérôme Sevrette / ANDIA](/sites/g/files/dvc3601/files/styles/content_push_teaser/public/image/2022/05/VEOLIA_StJeanLaPoterie_JeromeSevrette_Andia_52.jpg.webp?itok=HYuWBupL) ](/en/applications/industrial-wastewater-treatment "Industrial wastewater treatment") [Industrial wastewater treatment](/en/applications/industrial-wastewater-treatment "Industrial wastewater treatment") Technologies, services and process expertise to meet environmental requirements, remove contaminants and transform wastewater into a resource. [Read more](/en/applications/industrial-wastewater-treatment "Industrial wastewater treatment") [ ![stormwater content push picture](/sites/g/files/dvc3601/files/styles/content_push_teaser/public/image/2022/06/RAMSES%2005%20copie.jpg.webp?itok=ZH4zM7md) ](/en/applications/stormwater-management "Stormwater management") [Stormwater management](/en/applications/stormwater-management "Stormwater management") Solutions for the control, interception and clarification of stormwater [Read more](/en/applications/stormwater-management "Stormwater management") [ ![](/sites/g/files/dvc3601/files/styles/content_push_teaser/public/image/2023/04/Municipal-wastewater.jpg.webp?itok=Kq3O3Wjb) ](/en/applications/municipal-wastewater "Municipal wastewater treatment") [Municipal wastewater treatment](/en/applications/municipal-wastewater "Municipal wastewater treatment") Optimized management of effluents and wastewater. [Read more](/en/applications/municipal-wastewater "Municipal wastewater treatment") ## Services [ ![Hubgrade make your ressources smarter banner ](/sites/g/files/dvc3601/files/styles/content_push_teaser/public/image/2021/12/210394_VWT_CORPOC_HUBGRADE_web_banner_1542x528.jpg.webp?itok=WzQfipvd) ](/en/hubgrade-digital-solutions "Hubgrade digital solutions") [Hubgrade digital solutions](/en/hubgrade-digital-solutions "Hubgrade digital solutions") A combination of digital tools and Veolia expertise that make all your water processes smarter, safer and more sustainable. [LEARN MORE](/en/hubgrade-digital-solutions) [ ![Service man controlling valves](/sites/g/files/dvc3601/files/styles/content_push_teaser/public/image/2019/06/Service.jpg.webp?itok=E5-W4Usp) ](/en/services/installed-base-services "Installed Base Services") [Installed Base Services](/en/services/installed-base-services "Installed Base Services") Providing best-in-class water treatment services tailored to your exact needs to optimize the operational performance of your facility. [LEARN MORE](/en/services/installed-base-services) [ ![](/sites/g/files/dvc3601/files/styles/content_push_teaser/public/image/2022/07/MWS-Push-2_0.jpg.webp?itok=kumj6CK5) ](/en/services/mobile-water-services "Mobile Water Services") [Mobile Water Services](/en/services/mobile-water-services "Mobile Water Services") Rental assets to support and assist your site operations for temporary and longer-term water treatment needs 24/7. [LEARN MORE](/en/services/mobile-water-services) [ ![](/sites/g/files/dvc3601/files/styles/content_push_teaser/public/image/2024/01/shutterstock_1134286673_0.jpg.webp?itok=rHDlJ1nU) ](/en/water-service "Water as a Service") [Water as a Service](/en/water-service "Water as a Service") An innovative water subscription service that provides a comprehensive solution for customized water treatment and management. [Read more](/en/water-service "Water as a Service") ## Product range and resources Product range #### Modular design with very high flexibility Hydrotech Drumfilter comes in a variety of sizes to suit your specific requirements. - Six different drum diameters, ranging from 0.5 meters (m) to 2.4 m - Filter areas from 0.35 square meters (㎡) to 21.6㎡ - A total of 20 different size options to choose from Filters are easy to operate with two drive system options: - Direct-drive: Perfect for our smaller drums (0.5m and 0.8m diameters) - Chain transmission: A tried-and-tested system, proven reliable for over a decade Find the perfect fit for your filtration needs. [**Hydrotech™ Discfilters**](/en/solutions/technologies/hydrotech-discfilter "Hydrotech™ Disc Filters") Hydrotech™ Disc Filters are specially designed for suspended solids removal. The mechanical, self-cleaning filters use a combination of high-quality materials and patented processes, enabling facilities to meet stringent performance requirements in a variety of applications within the municipal and industrial markets. [**Hydrotech™ Nutri-Pack**](/en/solutions/technologies/hydrotech-nutri-pack "Hydrotech™ Nutri-pack") Hydrotech™ Nutri-Pack microfiltration is a dual chemical-physical tertiary treatment separation system that can reduce up to 90% of phosphorus and 95% of total suspended solids (TSS) in the wastewater treatment effluent stream. Resources [PDF Hydrotech HDF Value Series - A new generation of cost-efficient drum filters (8.94 MB) ](/sites/g/files/dvc3601/files/document/2023/02/Hydrotech%20HDF%20Value%20Series%20Brochure.pdf) ## Contact Hydrotech Drumfilter is a game-changer in ecological water treatment. With 98% suspended solids removal, it tackles diverse water quality challenges efficiently and sustainably. Its self-cleaning design and low maintenance needs minimize environmental impact, making it a key player in protecting aquatic ecosystems and advancing sustainable water management. ![William Blandford picture](/sites/g/files/dvc3601/files/styles/default/public/image/2025/02/William-Blandford.jpg.webp?itok=JX3SBwyx) #### William Blandford Development Department Manager, Hydrotech **Contact William through his**[ **LinkedIn account**](https://www.linkedin.com/in/wjblandford/) ## FAQ about Hydrotech Drumfilter ### What are suspended solids in water treatment? Suspended solids in water treatment are tiny, undissolved particles that float in water, including silt, organic matter, microorganisms and industrial waste. They can be classified as settleable (heavier particles that sink) or non-settleable (lighter particles that stay suspended). Removing suspended solids is essential to improve water clarity, reduce turbidity and lower biochemical oxygen demand (BOD). ### Why is suspended solids removal important? Total suspended solids (TSS) is a key water quality indicator, measured by filtering and weighing solids in a water sample. Effective removal of suspended solids protects aquatic life, ensures regulatory compliance and enhances downstream treatment processes. ### What can water treatment plant managers do to select the best suspended solids removal filtration system for their needs? Plant managers should assess influent water quality, including turbidity, total suspended solids (TSS), and particle size distribution, to identify suitable removal methods. They should evaluate system capacity, peak flow rates and scalability for future demand and consider maintenance needs, automation for backwashing and cleaning and regulatory compliance. Selecting a system with low energy consumption, minimal downtime and reliable supplier support reduces operational costs. A total cost of ownership analysis helps ensure the most cost-effective, efficient, and long-term solution for solids removal. Our experts will help you ensure performance and sustainability without compromise. They will help you make an informed decision and give you peace of mind thanks to effective filtration, reduced downtime, and long-term cost savings. ## Case Studies ![](/sites/g/files/dvc3601/files/styles/show_case_card/public/image/2025/04/OATLY_case-study.jpg.webp?itok=htiafBBv) Sweden OATLY - FOOD AND BEVERAGE Oatly, a Swedish plant-based food company, faced challenges meeting strict effluent requirements due to its environmental permit and proximity to a nature reserve. The company needed a wastewater treatment plant that could achieve high reductions in biochemical oxygen demand (BOD), phosphorus and nitrogen. Hydrotech Drumfilters provide the solution ensuring effluent polishing as the final step before discharge. The filters meet stringent requirements, operate 24/7, and are cleaned chemically and with high pressure weekly. This helps Oatly maintain sustainability standards and comply with environmental regulations. ## Technologies related to Hydrotech™ Drumfilter [ ![](/sites/g/files/dvc3601/files/styles/vwt_product_content_push/public/image/2019/03/Dusenflo-push.jpg.webp?itok=bUBxBYHQ) ### Dusenflo™ Gravity Filter Since 1948, Veolia Water Technologies Canada has developed an expertise second to none in water and wastewater treatment. Among the numerous processes that the company offers to meet various treatment objectives, the Dusenflo™ gravity filter has proven to be an efficient and reliable filtration system. Filtration ](/en/technologies/dusenflo-gravity-filter) [ ![Powerclean tanks for removal of suspended solids and hydrocarbons](/sites/g/files/dvc3601/files/styles/vwt_product_content_push/public/image/2019/04/Powerclean-push.jpg.webp?itok=9PRCSRea) ### PowerClean™ PowerClean™ is among some of the most advanced nutshell media filtration technologies available on the market for the removal of suspended solids and free oil from produced water or any water source. Filtration ](/en/solutions/technologies/powerclean-nutshell-filter)