Ultrapure Water Machine RUPT for Water Filtration

The NewRay Laboratory Ultrapure Water System is a water purification device for laboratory use, designed to remove all solid impurities, salt ions, bacteria, viruses, and other contaminants from water through methods such as filtration, reverse osmosis, electrodialysis, ion exchange, and ultraviolet sterilization.
The NewRay Laboratory Ultrapure Water System is widely used in industries such as pharmaceuticals, electronics, chemicals, and biological and chemical laboratories. It typically produces both purified water and ultrapure water.
NewRay Laboratory Ultrapure Water System Water Purification Process
Activated Carbon Adsorption: The adsorption process of activated carbon utilizes the pore size of the carbon filter and the permeability of organic matter through these pores to achieve adsorption and filtration. The adsorption rate is related to the molecular weight and size of the organic matter. Shell-based (e.g., coconut shell) granular activated carbon is particularly effective at removing chloramine. Activated carbon also removes free chlorine from water to protect other purification units in the system that are sensitive to oxidants. Activated carbon is often used in combination with other treatment methods. In the design of a pure water system, the configuration of activated carbon relative to other purification units is a critical aspect of water treatment technology.
Microfiltration: Microfiltration includes three types: depth filtration, screen filtration, and surface filtration. Depth filtration membranes are made from woven fibers or compressed materials and retain particles through random adsorption or trapping. Screen filtration membranes have a consistent structure, like a sieve, retaining particles larger than the pore size on the surface (the pore size of such membranes is very precise). Surface filtration consists of multiple layers; when a solution passes through the membrane, particles larger than the internal pores are retained and primarily accumulate on the membrane surface. Due to the different functions of these three types of membranes, distinguishing between them is important. Depth filtration is an economical method that removes over 98% of suspended solids while protecting downstream purification units from fouling or clogging, making it commonly used as a pre-filtration treatment (e.g., the PP filtration pretreatment in the NewRay Laboratory Ultrapure Water System is a form of depth filtration). Surface filtration can remove over 99.99% of suspended solids and is also used for pre-filtration or clarification. Microporous membranes (screen filtration membranes) are typically placed at the final point of use in the purification system to remove residual traces of resin fragments, carbon particles, colloidal particles, and microorganisms. For example, a 0.22μm microporous membrane can filter out all bacteria and is commonly used for sterilizing intravenous fluids, serum, and antibiotics.
Reverse Osmosis Desalination: Reverse osmosis was successfully developed in the United States in the 1960s, initially for aerospace technology to address water recycling for astronauts in space. It later transitioned to civilian use and has become the preferred technology for seawater desalination and pure water production due to its high efficiency, low energy consumption, and pollution-free advantages. Most bottled purified water is produced using reverse osmosis systems. Reverse osmosis (RO) technology is a membrane separation filtration technology driven by pressure difference, with pore sizes as small as the nanometer level (1 nanometer = 10^-9 meters). Under certain pressure, H2O molecules can pass through the RO membrane, while impurities such as inorganic salts, heavy metal ions, organic matter, colloids, bacteria, and viruses in the feed water cannot, thus strictly separating pure water from concentrated water. The working principle of reverse osmosis is as follows: When two solutions of different concentrations are separated by an RO membrane, osmosis naturally occurs. Osmotic pressure pushes water through the RO membrane, diluting the more concentrated solution until equilibrium is reached. In water purification systems, pressure is applied to the concentrated solution to counteract osmotic pressure, forcing pure water through the RO membrane for collection. Due to the high density of RO membranes, water production is slow, and it takes considerable time for the storage tank to accumulate sufficient water. RO membranes exclude ions, allowing only water to pass through, while all other ions and dissolved molecules (including salts and sugars) are retained and carried away as concentrate. Based on feed water and product water quality, RO is the most economical and effective method for purifying tap water into pure water with proper design. RO is also the best pretreatment method for reagent-grade ultrapure water systems.
Ultrafiltration: This is a sieving process related to membrane pore size, driven by the pressure difference across the membrane. Using an ultrafiltration membrane as the filtering medium, under certain pressure, when the feed solution flows over the membrane surface, the densely packed micropores on the ultrafiltration membrane allow only water and small molecules to pass through as permeate, while substances larger than the pore size are retained on the feed side as concentrate, achieving purification, separation, and concentration of the feed solution. The working principle is illustrated below. Ultrafiltration membranes are tough, thin, selective permeable membranes with physical pore sizes typically between 0.001 and 0.1 micrometers, capable of retaining most molecules above a certain size, including colloids, microorganisms, and pyrogens. Smaller molecules, such as water and ions, can pass through the membrane.
UV Digestion for TOC Reduction: Ultraviolet (UV) light is an invisible light wave located beyond the ultraviolet end of the spectrum, hence its name. Depending on the wavelength range, UV is divided into three bands: A, B, and C. The C-band UV light, with wavelengths between 240 and 260 nm, is the most effective germicidal range, with the strongest wavelength at 253.7 nm. The principle of UV sterilization is generally attributed to nucleic acids in organisms absorbing UV energy, altering their structure, and thereby disrupting their function. When the absorbed energy reaches a lethal dose and UV exposure is maintained for a certain time, bacteria die in large numbers. Advances in UV lamp manufacturing technology have enabled the production of UV lamps that simultaneously emit 185 nm and 254 nm wavelengths. This combination of wavelengths can photochemically oxidize organic compounds, reducing the total organic carbon (TOC) concentration in ultrapure water to below 5 ppb.
RUPT Series Ultrapure Water System Performance Features
· Self-check upon startup, large-screen LCD dot matrix display with Chinese interface.
· Animated display of program operation, interface display for water production and internal circulation, water full interface display, and alarm functions for purified water and ultrapure water quality exceeding standards.