--- title: VSEP Filtration System – Efficient Nitrogen & PFAS Removal description: Advanced membrane filtration system combining Rotary Press and VSEP for high-efficiency nitrogen removal, nutrient recovery, and sustainable wastewater treatment. image: https://www.langelyche.no/hubfs/cost-saving-wastewater-dewatering-pg-cleanwater.png --- [Skip to content](https://www.pgcleanwater.com/solutions/nitrogen-and-pfas-filtration#main-content) Close - [Home](https://www.pgcleanwater.com) - Solutions - [Dewatering for Aquaculture](https://www.pgcleanwater.com/solutions/dewatering-aquaculture) - [Dewatering for Biogas Production](https://www.pgcleanwater.com/solutions/dewatering-biomas) - [Dewatering for Wastewater Treatment](https://www.pgcleanwater.com/solutions/dewatering-wastewater) - [Dewatering for Pulp and Paper](https://www.pgcleanwater.com/solutions/dewatering-pulp-paper) - [VSEP Filtration system](https://www.pgcleanwater.com/solutions/nitrogen-and-pfas-filtration) - Products - [Rotary Press](https://www.pgcleanwater.com/products/fournier-rotary-press) - [VSEP N2 filtering](https://www.pgcleanwater.com/solutions/nitrogen-and-pfas-filtration) - [Agitators](https://www.pgcleanwater.com/products/submix-agitators) - [Pump Solutions](https://www.pgcleanwater.com/products/pumps) - [Polymer Dosing Systems](https://www.pgcleanwater.com/products/quickdraw-polymer-dosing-system) - [About us](https://www.pgcleanwater.com/about-pg-cleanwater-solutions) - [Connect](https://www.pgcleanwater.com/contact-pg-cleanwater-solutions) [![PG Cleanwater Solutions logo - CMYK-1](https://www.pgcleanwater.com/hs-fs/hubfs/PG%20Cleanwater%20Solutions%20logo%20-%20CMYK-1.png?width=200&height=79&name=PG%20Cleanwater%20Solutions%20logo%20-%20CMYK-1.png)](https://www.pgcleanwater.com?hsLang=en) [![PG Cleanwater Solutions logo - CMYK-1](https://www.pgcleanwater.com/hs-fs/hubfs/PG%20Cleanwater%20Solutions%20logo%20-%20CMYK-1.png?width=200&height=79&name=PG%20Cleanwater%20Solutions%20logo%20-%20CMYK-1.png)](https://www.pgcleanwater.com?hsLang=en) - [Home](https://www.pgcleanwater.com) - Solutions - [Dewatering for Aquaculture](https://www.pgcleanwater.com/solutions/dewatering-aquaculture) - [Dewatering for Biogas Production](https://www.pgcleanwater.com/solutions/dewatering-biomas) - [Dewatering for Wastewater Treatment](https://www.pgcleanwater.com/solutions/dewatering-wastewater) - [Dewatering for Pulp and Paper](https://www.pgcleanwater.com/solutions/dewatering-pulp-paper) - [VSEP Filtration system](https://www.pgcleanwater.com/solutions/nitrogen-and-pfas-filtration) - Products - [Rotary Press](https://www.pgcleanwater.com/products/fournier-rotary-press) - [VSEP N2 filtering](https://www.pgcleanwater.com/solutions/nitrogen-and-pfas-filtration) - [Agitators](https://www.pgcleanwater.com/products/submix-agitators) - [Pump Solutions](https://www.pgcleanwater.com/products/pumps) - [Polymer Dosing Systems](https://www.pgcleanwater.com/products/quickdraw-polymer-dosing-system) - [About us](https://www.pgcleanwater.com/about-pg-cleanwater-solutions) - [Connect](https://www.pgcleanwater.com/contact-pg-cleanwater-solutions) ![Underwater-Oslofjorden](https://www.pgcleanwater.com/hs-fs/hubfs/Underwater-Oslofjorden.jpg?width=575&name=Underwater-Oslofjorden.jpg) # Efficient Nitrogen and Contaminant Removal from Wastewater Stricter discharge limits and tougher environmental regulations are putting pressure on wastewater treatment plants and industrial operators worldwide. One of the biggest environmental challenges is reducing **nitrogen (N)** and other nutrients in effluent streams — a key cause of eutrophication, oxygen depletion, and algae blooms. Our combined **Rotary Press and VSEP membrane system** provides a highly efficient, low-maintenance, and sustainable solution — achieving up to **99.9% nitrogen removal** while recovering clean water and valuable nutrients. [Connect](https://www.pgcleanwater.com/contact-pg-cleanwater-solutions?hsLang=en) ## Advanced Membrane Filtration for Nitrogen Removal. **![](https://www.pgcleanwater.com/hs-fs/hubfs/VSEP-LOGO-300-DPI.jpg?width=200&height=61&name=VSEP-LOGO-300-DPI.jpg) Vibratory Shear Enhanced Processing (VSEP)** is an advanced membrane filtration technology developed by **[New Logic Research Inc.](https://vsep.com)** and patented by **Dr. J. Brad Culkin** in 1986. Using controlled vibrations, VSEP keeps the membrane surface clean and maintains high flow — even when filtering challenging liquids such as sludge, digestate, or industrial wastewater. Combined with the **Fournier Rotary Press™**, it creates a complete and energy-efficient solution for **sludge dewatering, nutrient recovery, and wastewater polishing**. Together, these two technologies help treatment plants **reduce discharge loads**, **lower OPEX**, and **meet the strictest nitrogen and phosphorus limits**. ![VSEP](https://www.pgcleanwater.com/hs-fs/hubfs/vsep-hero-image.jpg?width=1388&height=842&name=vsep-hero-image.jpg "VSEP") ## How does the VSEP filtation work? Unlike conventional membrane systems that gradually foul and lose performance, VSEP uses an **unbalanced drive shaft** to create rapid vibrations across the membrane surface. These vibrations generate a **shear wave** that prevents particles from settling and clogging the pores — maintaining consistent filtration performance over time. The process typically involves two stages: ### 1 Rotary Press Dewatering The Rotary Press removes most solids, producing a dry cake rich in phosphorus. ### 2 VSEP Filtration The remaining liquid (reject water) is filtered through VSEP membranes to remove **nitrogen, phosphorus, PFAS, heavy metals**, and other contaminants. ### **The result:** - A **clean water stream** that meets or exceeds discharge standards - **Recovered nutrients** (N, P, K) suitable for reuse or agricultural fertilizer applications ![VSPE-vs-conventional-Flow-Pg-cleanwater-solutions](https://www.pgcleanwater.com/hs-fs/hubfs/VSPE-vs-conventional-Flow-Pg-cleanwater-solutions.png?width=328&height=422&name=VSPE-vs-conventional-Flow-Pg-cleanwater-solutions.png) VSEP overcomes fouling problems commonly associated with membrane filtration by using vibration to create high shear at the membrane surface. ## Key Highlights - **Up to 99.9% nitrogen removal** Proven performance in both municipal and industrial wastewater treatment. - **Low operating cost (OPEX)** Minimal energy use, no backwashing, and reduced chemical consumption. - **Continuous, self-cleaning operation** Vibratory motion prevents fouling and reduces maintenance. - **Sustainable and circular** Enables nutrient recovery and water reuse. - **Compact footprint** Ideal for plant upgrades, retrofits, or modular installations. - **Proven across industries** Municipal wastewater, biogas digestate, pulp & paper, food & beverage, mining, and industrial effluents. ## Typical Applications: VSEP is highly versatile and is used across industries where traditional membrane systems struggle: - **Municipal wastewater treatment plants (WWTPs)** Reduce nitrogen discharge and comply with tightening regulations. - **Industrial effluent treatment** Remove PFAS, nitrogen, and heavy metals from process water. - **Biogas and sludge management** Separate digestate into clean water, solids, and nutrient-rich concentrates. - **Recycling and resource recovery** Support circular economy by reusing water and nutrients. ## Sustainable by Design The combination of **Rotary Press and VSEP** represents a future-ready solution for wastewater treatment — combining **mechanical dewatering** with **advanced membrane polishing**. This dual-stage approach significantly reduces environmental impact, operating costs, and chemical usage, while contributing to a **cleaner, more sustainable water cycle**. ## Pilot Testing VSEP systems comes in a range of sizes and models. To effectively discover whats works best with your unique sludge and processes, we offer pilot testing. ![P50-photo](https://www.pgcleanwater.com/hs-fs/hubfs/P50-photo.jpg?width=155&height=300&name=P50-photo.jpg "P50-photo") ## FAQs about VSEP and Nitrogen Removal ### What is VSEP? VSEP (Vibratory Shear Enhanced Processing) is a membrane filtration system that uses vibration to prevent fouling and maintain high filtration efficiency. ### How does VSEP work with Rotary Press? The Rotary Press dewaters sludge and removes solids first. The remaining liquid is then filtered in the VSEP unit, which removes nitrogen, phosphorus, PFAS, and other contaminants. ### What are the main benefits of the Rotary Press + VSEP combination? High nitrogen removal, low operating cost, reduced maintenance, nutrient recovery, and compliance with strict discharge limits. ### Which industries can use VSEP? Municipal wastewater, biogas plants, food & beverage, pulp & paper, and industrial effluent treatment. ### Connect with our team Ready to improve your wastewater performance? Contact PG CleanWater Solutions to learn how our systems can help you meet future discharge limits, reduce OPEX, and recover valuable resources.  Get in touch with our team for an insightful talk and learn how we can help solve your challenges [Connect](https://www.pgcleanwater.com/contact-pg-cleanwater-solutions?hsLang=en) In 2025 PG and PG Clean Water Solutions signed an distribution agreement with US-based **New Logic Research Inc.** [![New Logic Research logo](https://7141427.fs1.hubspotusercontent-na1.net/hub/7141427/hubfs/nlr-logo-2019.png?width=600&height=108&name=nlr-logo-2019.png)](https://vsep.com) See even more information on VSEP at their website - [www.vsep.com](https://vsep.com) PG - a complete system supplier. ## Products As a complete system supplier with machine builder expertise, process know-how and support, PG CleanWater Solutions along with our partners and suppliers offer a range of complementary equipment that help optimizing the complete sludge process - before and after the dewatering stage. Our combined team of experts possesses extensive process know-how and resources and are able to provide complete, tailor-made, turn-key solutions ranging from agitators to pumps,  to suit your specific requirements - all accompanied by exceptional life-cycle support and services. ### Products ### [Dewatering Rotary Press](https://www.pgcleanwater.com/products/fournier-rotary-press?hsLang=en) [Learn more](https://www.pgcleanwater.com/products/fournier-rotary-press?hsLang=en) The FOURNIER ROTARY PRESS™ offers a highly efficient solid-liquid dewatering separation for a range of industries that handles biomass, sludge, pulp, or other suspension materials. ### [Agitators](https://www.pgcleanwater.com/products/submix-agitators?hsLang=en) [Learn more](https://www.pgcleanwater.com/products/submix-agitators?hsLang=en) PG Submix agitators are meticulously engineered to prevent sedimentation and ensure optimal mixing and blending of the pulp, resulting in improved uniformity and quality of the final products. ### [Pumps](https://www.pgcleanwater.com/products/pumps?hsLang=en) [Learn more](https://www.pgcleanwater.com/products/pumps?hsLang=en) Wide selection of quality pumps and flow solutions for all stages of the process-line. ### [Polymer dosing systems](https://www.pgcleanwater.com/products/quickdraw-polymer-dosing-system?hsLang=en) [Learn more](https://www.pgcleanwater.com/products/quickdraw-polymer-dosing-system?hsLang=en) The Fournier QuickDraw - an innovative continuous flow dry polymer preparation system that offers all the advantages of dry polymer, without its cumbersome downsides. Intro Title ## Testrapporter Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. Lorem ipsum dolor sit amet, consetetur sadipscing elitr. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua.   TOUCH Rapport Rapport TOUCH Rapport Rapport TOUCH Rapport Rapport [![Logo - PG Cleanwater Solutions - white-1](https://www.pgcleanwater.com/hs-fs/hubfs/Logo%20-%20PG%20Cleanwater%20Solutions%20%20-%20white-1.png?width=200&height=80&name=Logo%20-%20PG%20Cleanwater%20Solutions%20%20-%20white-1.png)](https://www.pgcleanwater.com?hsLang=en) For over three decades, we have been addressing environmental challenges and developing advanced technologies for treating process water, conserving water resources, and efficiently managing diverse sludge types generated by effluent treatment plants. [  Visit our LinkedIn page](https://www.linkedin.com/company/pgcleanwater) [ Visit our Youtube Channel](http://www.youtube.com/@PGCleanwaterSolutions) - Solutions - [Dewatering for Aquaculture](https://www.pgcleanwater.com/solutions/dewatering-aquaculture) - [Dewatering for Biogas Production](https://www.pgcleanwater.com/solutions/dewatering-biomas) - [Dewatering for Wastewater Treatment](https://www.pgcleanwater.com/solutions/dewatering-wastewater) - [Dewatering for Pulp and Paper](https://www.pgcleanwater.com/solutions/dewatering-pulp-paper) - [Nitrogen and PFAS filtering for Wastewater and more](https://www.pgcleanwater.com/solutions/nitrogen-and-pfas-filtration) - Products - [Rotary Press](https://www.pgcleanwater.com/products/fournier-rotary-press) - [VSEP Membrane Filtering system](https://www.pgcleanwater.com/solutions/nitrogen-and-pfas-filtration) - [Agitators](https://www.pgcleanwater.com/products/submix-agitators) - [Pump Solutions](https://www.pgcleanwater.com/products/pumps) - [Polymer Dosing Systems](https://www.pgcleanwater.com/products/quickdraw-polymer-dosing-system) All rights reserved 2026 - PG Clean Water Solutions AS - [Privacy Policy](https://www.pgcleanwater.com/privacy-policy) ```json { "@context" : "http://schema.org", "@type" : "Organization", "address" : { "@type" : "PostalAddress", "addressCountry" : "Norway", "addressLocality" : "NO-3074", "addressRegion" : "Sande", "postalCode" : "", "streetAddress" : "Lærumveien 100" }, "knowsLanguage" : "", "logo" : { "@type" : "ImageObject", "url" : "https://143653436.fs1.hubspotusercontent-eu1.net/hubfs/143653436/PG%20Cleanwater%20Solutions%20logo%20-%20CMYK-1.png" }, "name" : "PG CleanWater Solutions AS", "url" : "https://www.pgcleanwater.com/solutions/nitrogen-and-pfas-filtration" } ```