Nanofiltration equipment

Working principle

The nanofiltration equipment adopts low-pressure selective nanofiltration technology, with precise control of membrane pore size between 0.001 μ m and 0.01 μ m, and a cut-off molecular weight of 200-1000Da. Relying on the dual effects of charge adsorption and physical screening of the nanofiltration membrane, under low-pressure conditions, it efficiently intercepts impurities such as calcium and magnesium ions, sulfates, heavy metals, macromolecular organic compounds, and microorganisms in water, achieving water softening and deep purification.

At the same time, the equipment allows some beneficial ions to pass through, retaining natural minerals in the water body, which is different from the non mineralized water quality of reverse osmosis pure water. Paired with a fully automatic forward and backward flushing system, it can effectively prevent the accumulation of impurities on the membrane surface, continuously stabilize the membrane flux, and support 24-hour continuous fine water purification operations.

Equipment configuration

Integrated modular design for the entire machine, compact layout, easy installation, suitable for long-term continuous industrial working conditions, finely selected core configuration, strong stability, and simple operation and maintenance:

• Multi level pretreatment system: equipped with quartz sand, activated carbon, and precision security three-stage filtration, effectively intercepting sediment, suspended solids, residual chlorine, and large molecular impurities, protecting the nanofiltration membrane components, and preventing membrane fouling and blockage.
• Low pressure energy-saving boosting system: equipped with a silent energy-saving high-pressure pump, suitable for low pressure operation of nanofiltration, stable pressure, lower energy consumption, and low operating noise. Compared with reverse osmosis equipment, it has significant energy-saving effect.
• High precision nanofiltration membrane module: using anti pollution low-pressure nanofiltration membrane, with excellent selective filtration performance, hardness removal rate ≥ 95%, organic matter retention rate ≥ 98%, washability, anti-oxidation, stable flux, and long service life.
• Intelligent PLC control system: Fully automatic touch operation, supporting automatic water production, timed flushing, real-time pressure difference monitoring, fault alarm, water shortage and low pressure protection, no need for dedicated personnel to be on duty, and can be connected to remote monitoring systems.
• Anti corrosion and durable body pipeline: The frame, filter tank, and water pipeline are made of SS304 food grade stainless steel material, which is corrosion-resistant, rust proof, and free of secondary pollution. It is suitable for complex working environments such as humidity, dust, acid and alkali.
• Optional supporting system: can be equipped with scale inhibition and dosing device, ultraviolet sterilization, precision filtration, stable pressure water storage system, suitable for high-end water purification, material purification, deep softening and other high demand scenarios.

Product advantages

Selective filtration for healthier water quality

Accurately intercepting harmful impurities and hardness ions in water, efficiently softening water quality, removing color and odor, while retaining beneficial minerals in the water. The effluent has a sweet taste, superior to ordinary filtration equipment, and is suitable for high-end drinking water purification needs.

Low voltage energy-saving, low operating cost

The operating pressure of nanofiltration equipment is much lower than that of reverse osmosis equipment, resulting in a significant reduction in energy consumption. High water utilization rate, low wastewater discharge, membrane components resistant to flushing and not easily damaged, lower long-term operation and maintenance consumables costs, and outstanding economic efficiency.

Efficient softening to prevent pipeline scaling

Targeted removal of calcium and magnesium hardness ions from water, solving scaling problems in equipment, pipelines, and heat exchangers from the root, effectively protecting backend production equipment, reducing equipment cleaning and maintenance frequency, and extending the service life of industrial equipment.

Intelligent and fully automatic, easy and worry free operation and maintenance

Fully automated operation, one click start stop, automatic flushing, fault self checking, multiple safety protections, supporting 24/7 uninterrupted operation without the need for dedicated personnel, significantly saving labor management costs.

One machine with multiple uses, suitable for a wide range of scenarios

It has multiple functions including filtration, softening, purification, and decolorization, and can be used for commercial high-end water purification, residential direct drinking water projects, as well as industrial water softening, material concentration, and deep treatment of reclaimed water. It supports customized specifications as needed.

Application scenarios

With the unique advantages of selective filtration, low-pressure energy saving, and precise softening, it is widely used in commercial water purification, industrial water treatment, fine purification, and other fields:

• Commercial high-end water purification: Direct drinking water projects for residential areas, hotels, schools, and office buildings, producing high-end purified water from bottled and barreled water;
• Industrial water softening: boiler makeup water, circulating cooling water, and production process water softening to solve equipment and pipeline scaling problems;
• Food and beverage industry: Purification of water used in the production of alcoholic beverages, beverages, and dairy products to retain water quality activity and improve product taste quality;
• Fine chemical purification: natural extracts, biological agents, and small molecule materials are concentrated and purified, with low temperature and no phase change, retaining material activity;
• Environmental water treatment: deep treatment of reclaimed water reuse, decolorization and COD reduction at the end of sewage, and deep purification of surface water and groundwater.

Technical parameters

• Water production flow rate: 0.5T/H -150T/H (customizable)
• Filtering accuracy: 0.001 μ m-0.01 μ m
• Hardness removal rate: ≥ 95%
• Organic interception rate: ≥ 98%
• Water utilization rate: ≥ 75%
• Control mode: PLC fully automatic, timed flushing, remote monitoring
• Body material: SS304 food grade stainless steel
• Applicable raw water: tap water, groundwater, surface water, and standard industrial reclaimed water
• Working pressure: 0.4MPa-0.8MPa (low pressure operation)
• Working temperature: 5 ℃ -45 ℃
• Characteristics of effluent: Softening and purifying water, retaining beneficial minerals, sweet taste, no scaling

After sales guarantee

Provide one-stop customized services for nanofiltration water treatment equipment, from scheme survey, equipment production, on-site installation to post operation and maintenance, with exclusive escort throughout the entire process:

• Free water quality testing, on-site working condition survey, one-on-one customized softening, purification, and water purification exclusive solutions;
• Home delivery, professional engineers on-site installation and debugging, providing complete training on equipment operation and maintenance;
• One year warranty for the entire machine, special warranty for core components such as nanofiltration membranes and booster pumps, and lifetime technical support;
• 24-hour after-sales response, with fast on-site visits to all branches nationwide, without delaying the progress of production water supply and purification projects;
• Lifetime provision of membrane module cleaning, consumables replacement, equipment maintenance, and system upgrade value-added services.