Veolia delivers tailored solutions alongside cutting-edge technologies around the world.
In Japan, Nishihara Environment Co., Ltd., with over a century of history, has primarily driven solutions for municipalities. Meanwhile, the water treatment technology division of Veolia Jenets K.K. (formerly Showa Kankyo System), backed by a 50-year history, has catered to industrial customers.
By combining these unique Japanese technologies with over 160 years of global expertise and advanced technologies, we provide a wide range of high-quality services to meet diverse customer needs.
Veolia’s Technologies
Oxygen Generator (PSA / VSA)
Produces high-purity oxygen (90–93%) directly from air. It enables cost-effective, on-site oxygen supply with energy-efficient, fully automated operation and simple maintenance. With over 230 units installed globally and domestically, it is used across various applications, including activated sludge processes and oxygen enrichment for industrial furnaces.
Pure Oxygen Activated Sludge Process (UNOX® System)
An activated sludge process that achieves highly efficient and stable treatment through aeration using high-concentration oxygen. High oxygen transfer efficiency within sealed tanks makes it suitable for hard-to-degrade wastewater, while reducing surplus sludge, footprint, and odor issues.
High-Rate Clarification and Thickening Process (MULTIFLO®)
A high-efficiency unit combining coagulation with inclined plate clarification, achieving up to 15 times faster processing and a 1/20 footprint reduction compared to conventional systems. It handles a wide range of turbidity levels with minimal chemical dosing to deliver superior water quality. Proven with over 500 installations worldwide.
Actiflo® High-Rate Clarification Process (ACTIFLO®)
Veolia’s proprietary patented technology performs solid-liquid separation at several times the speed of conventional methods by using microsand as a seed for rapid floc formation. Despite its extremely compact footprint, it is highly resilient to fluctuations in raw water quality and flow rate, ensuring reliable performance. Ideal for industrial wastewater, drinking water, sewage, and environmental remediation.
Automatic Backwashing Disc Filter (Berkal™ Discfilter)
An automatic backwashing disc filter designed for large-flow treatment within a space-saving design. It operates continuously even during backwash cycles and eliminates consumables for low operating costs and easy management. Highly effective for cooling tower recirculation pretreatment and turbidity removal.
Moving Bed Biofilm Reactor (MBBR)
An activated sludge process that holds high densities of specialized bacteria on carrier media moving freely inside the tank. Adding media allows for easy capacity upgrades of existing facilities. It resists clogging, ensuring consistent treatment performance and simplified operation.
High-Efficiency Nitrification/Denitrification Process (ANITA™ Mox)
A nitrogen removal process utilizing anaerobic ammonium oxidation (Anammox). It reduces oxygen consumption by approximately 60% and sludge production by up to 90% compared to conventional methods, without requiring added carbon sources. Delivers significant energy and cost savings for high-ammonia wastewater.
High-Efficiency Microfilter (Disc Filter / Drum Filter)
Features a unique structure providing a large filtration area within a small footprint. Automatic backwashing ensures uninterrupted, stable water quality without stopping operation. With few moving parts, it offers simple maintenance for intake water, advanced sewage treatment, and industrial wastewater reuse.
Evaporators and Crystallizers
Advanced process systems from HPD, a world leader in evaporation and crystallization technology. Highly energy-efficient, these systems drastically reduce wastewater volumes while enabling byproduct recovery and water reuse, driving both environmental footprint reduction and cost savings.
Pure & Ultrapure Water Systems (RO / CDI® Unit: Super Ionpro Plus)
Integrates Reverse Osmosis (RO) and Continuous Deionization (CDI®) to generate high-purity water. Eliminates the need for chemical regeneration, lessening environmental impact. Provides reliable water quality at low operating costs for high-pressure boilers and industrial applications.
Wastewater Recovery Systems
Tailored water recovery systems combining core technologies—such as membrane filtration, coagulation sedimentation, and biological treatment—optimized for diverse wastewater characteristics. Promoting water reuse significantly cuts water procurement costs and conserves resources.
→ Product catalog (PDF:1.32MB)
Related products catalog
→ ACTIFLO® catalog (PDF:11.31MB)
→ DISCFILTER & DRUMFILTER catalog (PDF:19.21MB)
Microfiltration Membrane System (MEMCOR® CMF)
An innovative system using hollow-fiber membranes for advanced clarification and disinfection as an alternative to conventional sand filtration. Delivers high-precision filtration within a compact footprint, featuring automated backwashing for reliable operation from drinking water to industrial effluent recycling.
Membrane Bioreactor Process (ZENON Membrane Process)
A Membrane Bioreactor (MBR) process utilizing microfiltration (MF) membranes to yield high-quality treated water. Highly durable ZENON membranes and proprietary alternating aeration cleaning achieve lower costs and a compact footprint. Fully automated cleaning enables simple, reliable management.
Large-Scale Temporary Sewage Treatment Unit (MBBR Pack)
A mobile sewage treatment unit combining a tank equipped with air diffusers, media, blowers, and a control panel. A single unit processes up to 1,000 m³/day, making it ideal for temporary sewage treatment during major retrofit projects or emergency disaster responses.
ROTAMAT® Screen
An integrated screen unit combining capture, washing, conveyance, and dewatering. Simplifies treatment flow while delivering energy savings, low costs, and easy maintenance. A highly functional screening system with over 1,000 units delivered worldwide.
Linpor Process
An activated sludge process that incorporates specialized 'Linpor Cubes' as carrier media. It maintains a high concentration of microorganisms within the aeration tank while relieving the load on the final clarifier. This enables stable nitrogen removal and enhanced treatment capacity with minimal retrofitting of existing facilities.
Rotary Fin Sludge Scraper
The rotating blades of this sludge scraper promote solid-liquid separation and enhance thickening performance. It contributes to higher efficiency and reduced load in downstream processes, making it suitable for a wide range of municipal water and wastewater facilities. A highly reliable technology certified by the FY2013 Construction Technology Review.
External Digester Mechanical Mixer (NAS-E)
A mixing system that creates a powerful horizontal swirl to thoroughly agitate the entire digester tank with zero dead zones. Because the drive unit is installed outside the tank, inspection and maintenance can be performed easily without emptying the digester. It significantly reduces O&M costs while supporting stable, continuous operation.
Decanter Centrifuge (SD Series)
A decanter centrifuge engineered for high solid-liquid separation performance, enabling stable processing of various sludge types. It features superior operability with an intuitive touch-panel interface and automated control options. Backed by a proven track record of over 800 units delivered since 1968.
Ultrasonic Sludge Density / Interface Meter (NU Series)
An ultrasonic measuring instrument designed for monitoring sludge density and blanket levels in water and wastewater treatment facilities. Using ultrasonic signals, it provides stable readings unaffected by sludge color, pH, or electrical conductivity. A long-selling product with over 5,000 units delivered worldwide.
Activated Sludge Biota Diagnostic App (biotte)
An official mobile application designed to make activated sludge biota analysis accessible and practical. It features a field guide of approximately 50 microorganisms along with operational log management (supporting CSV export). Beyond aiding professional plant managers, it serves as an educational reference for anyone exploring the world of water treatment.
Fine-Bubble Air Diffuser (Newflex)
A fine-bubble diffuser featuring high oxygen transfer efficiency. It delivers substantial energy savings—reducing blower power consumption by approximately 1/3 and overall facility power by about 1/4. Its clog-resistant design supports intermittent operation, while its simple structure allows for easy replacement of existing units and straightforward maintenance.
Ultraviolet Disinfection System (UV System)
A water disinfection system utilizing ultraviolet light. It effectively inactivates viruses that are resistant to chlorine without producing harmful disinfection byproducts (DBPs), making it an eco-friendly solution. It offers a compact footprint, reduces maintenance costs, and comes in a versatile product lineup tailored to various facility capacities.
Instantaneous Continuous Polymer Dissolution System (RCSS)
A system that instantly and continuously dissolves polymer flocculants. Its proprietary dissolution method eliminates the need for batch aging preparation, reducing space requirements to about 1/4 of conventional systems. By supplying freshly dissolved polymer on demand, it maximizes chemical efficiency and minimizes waste.
Low-Temperature Dehumidifying Sludge Dryer (Clean Dryer)
A sludge dryer utilizing a low-temperature dehumidification system. Moist air from the drying process is continuously dehumidified, reheated, and recirculated. Capable of leveraging waste heat from factories or solar thermal energy, it provides an eco-friendly and highly economical sludge drying solution.
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