PMnB is a chemical-free water and wastewater treatment technology developed by Palgey Maim, a global engineering company with over 50 years of experience in water treatment. Using stable nano bubbles, it dramatically improves gas transfer in water, enabling stronger oxidation, more efficient aeration, and reliable disinfection with lower energy and reduced chemical dependence.
PMnB integrates into existing infrastructure to improve clean water delivery without adding operational complexity.
In many cases, oxygen transfer is the limiting factor in achieving stable, compliant clean water output.
Conventional aeration and oxidation systems rely on large bubbles that rise quickly and escape before transferring their full gas content. To compensate, operators increase airflow or chemical use. This drives up energy costs and operational burden.
High aeration energy demand
Inconsistent oxidation performance
Heavy reliance on chlorine and other chemical dosing
Odor and sulfide formation
Reduction in emissions to meet regulations
PMnB was engineered specifically to address these limitations at the source.
PMnB uses controlled nanobubble generation to increase dissolved oxygen levels more efficiently than conventional aeration, improving oxidation and biological treatment performance. Nano bubbles are gas bubbles smaller than one micron in diameter. Unlike conventional bubbles, they:
Remain suspended in water for extended periods
Have a high surface area-to-volume ratio
Possess a negative surface charge that enhances interaction
Deliver gas gradually instead of losing it immediately to the atmosphere
Because nano bubbles stay in the water column longer, they increase gas dissolution efficiency and improve the reaction rate.
This enables more effective disinfection, improving water quality and neutralizing bacteria, viruses, and other pathogens. Crucially, the technology achieves this with less energy and fewer chemicals than other water treatment processes.
At the nanoscale, Brownian motion dominates buoyant forces. Instead of rising to the surface, nano bubbles remain dispersed throughout the liquid, delivering gas where it is needed within the treatment process.
Because nano bubbles are extremely small, they provide significantly more gas-liquid interface area compared to conventional aeration bubbles. This enhances chemical reactions and improves dissolved oxygen stability.
Nano bubbles exhibit a negative surface charge that helps prevent coalescence. This stability allows them to remain active in the water column for extended periods.
When dissolved oxygen levels decrease, gas stored within nano bubbles diffuses gradually into the surrounding water. This supports biological processes in wastewater secondary treatment and aerobic systems.
These nanoscale behaviors enable water treatment plants to increase dissolved oxygen.
PMnB applies nano bubble technology through a controlled, engineered process:
Ultra-fine bubbles are created and stabilized in water, remaining suspended for long durations to maximize effectiveness.
Dissolved gases such as ozone, oxygen, and air are delivered efficiently through nano bubble infusion, reducing required gas flow rates.
Extended contact time supports biological processes, oxidation reactions, and pathogen inactivation across secondary and tertiary treatment stages.
Nano bubbles remain suspended via Brownian motion
Lower gas input due to increased dissolution efficiency
Extended gas-liquid interface improves mass transfer
Reduced chlorine reliance via efficient ozone delivery
Chemical-free core operation
Large bubbles rise quickly and burst
High blower energy required
Oxygen transfer limited by contact time
Chlorine required for reliable disinfection
Chemical storage and handling required
PMnB is a multi-application solution designed to strengthen oxygen transfer, oxidation, and disinfection across diverse treated water and wastewater environments.
The same core technology supports biological treatment, advanced oxidation, and chemical-free disinfection, adapted to the operational demands of each system.
Increase dissolved oxygen stability and improve aerobic process performance while reducing aeration energy demand.
Strengthen oxidation of organics, sulfides, and contaminants in high-load and variable-flow systems.
Enhance pathogen reduction using efficient ozone delivery, reducing reliance on chlorine and repeated chemical dosing.
PMnB nano bubble systems are deployed across:
Because PMnB improves in-water gas transfer rather than adding chemicals, the technology adapts to the needs of each sector while maintaining the same engineering framework.
PMnB improves oxidation and biological stability upstream of reverse osmosis systems, supporting higher water quality and reducing membrane fouling.
Across operating plants and reservoirs worldwide, it delivers:
Up to 80% reduction in aeration energy demand
Up to 90% reduction in ozone usage
Significant BOD, COD, and TSS removal improvements
Sulfide and odor reduction
Stable dissolved oxygen across large water bodies
100% chemical-free core operation
A wastewater treatment upgrade reduced effluent quality in a 390,000 m³ reservoir. PMnB restored treatment performance using floating ozone nano bubble systems.
Poor reservoir water quality threatened reliable irrigation and crop health. PMnB was installed to control algae and biofilm in irrigation water.
A municipal facility required a chemical-free alternative for tertiary disinfection. PMnB implemented ozone nano bubble disinfection using floating units.
A 300,000 m³ reservoir receiving secondary-treated municipal effluent did not meet Ministry of Health quality requirements for irrigation reuse. PMnB was deployed using floating ozone nano bubble systems to improve oxidation and stabilize effluent quality without chemical dosing.
A large municipal wastewater reservoir system (500,000 m³ total volume, 2,500 m³/day flow) required advanced oxidation to meet Ministry of Health quality requirements for irrigation reuse. PMnB implemented floating ozone nano bubble systems to enhance oxidation efficiency and improve effluent quality.
An offal slaughterhouse facility required reliable sulfide reduction to meet discharge limits. PMnB was installed after anaerobic treatment to improve oxidation.
A PMnB ozone nano bubble system was installed on an effluent reservoir recirculation line to improve secondary effluent quality. The reservoir had become anaerobic with poor water quality (high BOD/COD, high turbidity). PMnB ozone nano bubbles restored oxygen levels and significantly improved effluent quality within practical operating timelines.
Severe odors from a wastewater reservoir in an industrial area caused public complaints. PMnB restored aerobic conditions across the reservoir.
A 370,000 m³ reservoir storing tertiary-treated wastewater experienced algae growth and declining effluent quality following irregular discharge during 2023, leading to disqualification for irrigation reuse. PMnB implemented floating ozone nano bubble systems to restore oxidation efficiency, control algae, and stabilize reservoir water quality.
A drinking water operator needed to reduce pathogens while significantly lowering chlorine use. PMnB implemented ozone-based nano bubble disinfection to improve treatment performance.
High iron and manganese levels had taken critical drinking water wells out of service. PMnB applied ozone nano bubble oxidation with sand filtration to restore well operation without chlorination infrastructure.
A 30,000 m³ irrigation reservoir required algae and biofilm control to protect irrigation performance. PMnB improved water clarity and stabilized reservoir conditions.
Every treatment system has unique constraints. PMnB engineers evaluate site conditions, process limitations, and performance goals to determine where nano bubble technology can deliver performance gains first.
Expand your portfolio with chemical-free water and wastewater treatment technology backed by real engineering, global validation, and partner support.
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Nano bubble technology improves treatment performance by increasing gas transfer efficiency in water. Because nano bubbles remain suspended longer than conventional bubbles, they provide extended contact time for dissolved gases such as ozone, oxygen, and air to dissolve and react.
This enhances:
By improving gas dissolution and stability, nano bubble systems help treatment plants achieve stronger and more consistent results with lower energy input.
Nano bubble technology can be integrated at multiple stages of a treatment process, depending on performance goals.
Common integration points include:
PMnB systems are designed for retrofit installation and can be integrated without major civil works or plant redesign.
Yes. Nano bubble technology can reduce chemical dependence by improving the efficiency of delivery of dissolved gases such as air, oxygen, and ozone.
In drinking water and tertiary wastewater treatment applications, ozone nano bubbles enhance oxidation and disinfection performance, which can reduce the required dose of chlorine or other chemical disinfectants.
The result is a treatment process that relies more on efficient gas transfer and less on continuous chemical dosing.
Conventional aeration produces larger bubbles that rise quickly to the surface, limiting gas transfer time. Much of the injected air escapes before fully dissolving.
Nano bubbles, by contrast:
This allows oxygen to dissolve more completely and remain available for biological processes.
Yes. Nano bubble technology can be applied in both drinking water and wastewater treatment systems.
In wastewater treatment, it supports aerobic biological processes, oxidation of organics, sulfide control, and tertiary disinfection.
In drinking water treatment, nano bubble ozone systems enhance pathogen reduction and disinfection, improve control of iron and manganese, and help reduce chlorine demand.
