During the National Day holiday, hundreds of millions of people set off on trips at the same time. Faucets are turned on in guesthouses at scenic areas, showerheads are opened in island resorts, and ice machines run in rural cafés—every one of these consumes water. When an island with a permanent population of less than a thousand welcomes tens of thousands of tourists during the holiday, and when guesthouses in remote mountain scenic areas fill up within days, where does the water in these places come from? Mountain stream water, lake water, groundwater, seawater... Is it safe to drink?

Special Challenges of Water Supply in Scenic Areas: Why Is It Harder Than Urban Water Supply?

Urban water supply has stable water sources, mature pipe networks, and professional operation and maintenance teams. Water supply in scenic areas, however, is a completely different matter.

What water supply in scenic areas needs is a more flexible, more reliable, and more compact technical solution.

How Does Membrane Technology Respond?—Ultrafiltration, Nanofiltration, and Reverse Osmosis Each Play Their Part

The core logic of membrane technology is simple: use "screens" with different pore sizes to block what should not be in the water. Different pore sizes determine what can be blocked and what should be blocked, which in turn determines the application scenario of each type of membrane.

Ultrafiltration Membrane—A "Fine Screen" Replacing Sand Filtration

The pore size of an ultrafiltration membrane is about 10 to 100 nanometers, like an "especially fine screen." It can efficiently intercept particulate pollutants such as bacteria, viruses, colloids, and suspended solids. The treated water turbidity can be stably reduced to below 0.1 NTU, far better than the national standard of 1 NTU.

Nanofiltration Membrane—A "Smart Screen" for Selective Removal

The pore size of a nanofiltration membrane is about 1 to 2 nanometers, equivalent to one hundred-thousandth of a human hair. Studies show that nanofiltration membranes have a significant removal effect on six categories of trace organic matter in drinking water, including disinfection by-product precursors, endocrine disruptors, and pharmaceuticals and personal care products. It has become one of the key technologies for advanced drinking water treatment. For direct drinking water scenarios in scenic areas, nanofiltration strikes a balance between safety and taste.

Reverse Osmosis Membrane—The "Core Weapon" for Seawater Desalination

The desalination rate of a reverse osmosis membrane can reach over 99%, making it the core technology for seawater desalination and brackish water desalination on islands. With an energy recovery device, the actual energy consumption of a modern seawater desalination reverse osmosis system can be controlled at 3 to 4 kWh/m³.

Membrane-Based Emergency Water Supply—Containerized Integrated Equipment

Modular, skid-mounted membrane integrated equipment highly integrates pretreatment, membrane filtration, disinfection, and other units into a container. On site, it only needs to be connected to the water inlet and outlet pipes and power lines to operate. This type of equipment can adapt to multiple water sources and provides stable treated water quality. It is suitable for temporary capacity expansion during peak seasons in scenic areas or emergency water supply in unexpected situations.

Holiday Assurance: Pre-Holiday Inspection and Emergency Preparation for Membrane Systems

Stable operation of membrane systems depends on routine maintenance, and even more so on advance preparation before holidays.

• Pre-holiday inspection should cover the appearance of membrane modules (whether there is damage or leakage), the operating status of pump units, instrument calibration, and chemical reserves. For reverse osmosis units temporarily shut down for no more than three days, they need to be flushed daily with a security filter for 30 minutes, and the modules must be kept filled with filtered water.
• Holiday monitoring should focus on three core indicators: online turbidity, residual chlorine, and conductivity. A remote monitoring system enables real-time viewing on mobile devices and timely detection of abnormalities.
• Emergency preparation includes having spare membrane modules in place, reserves of cleaning chemicals, and emergency water supply equipment ready for deployment. Nanofiltration membrane cleaning, comprehensive inspections, and duty shifts are all routine actions to ensure water supply safety during holidays.

Conclusion: Let "Faraway Places" Also Have Access to Safe Drinking Water

When traveling during the National Day holiday, behind a glass of safe water is the "fine screening" of ultrafiltration membranes intercepting bacteria and viruses, the "selective wisdom" of nanofiltration membranes precisely removing trace organic matter, and the "desalination power" of reverse osmosis membranes turning seawater into fresh water. From scenic areas to islands, from mountain stream water to seawater, membrane technology is enabling "faraway places" to also have access to safe drinking water.

Daordeng Membrane Technology (Shenzhen) Co., Ltd. provides core products such as reverse osmosis membranes, nanofiltration membranes, and ultrafiltration membranes. It covers full-scenario applications including seawater desalination, anti-fouling reverse osmosis, concentration and separation nanofiltration, and tubular/column ultrafiltration. The company is committed to providing reliable membrane-based solutions for water supply in scenic areas and other scenarios.