Ultrapure Water Machine for Water Treatment RUPT

The NewRay Laboratory Ultrapure Water System is a water purification device designed for laboratory use. It removes 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, chemical engineering, and biological and chemical laboratories. It typically produces both pure 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 activated 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. The configuration of activated carbon relative to other purification units is a critical aspect of water treatment system design.
Microfiltration: Microfiltration includes three types: depth filtration, screen filtration, and surface filtration. Depth filters use a matrix of woven fibers or compressed materials to trap particles through random adsorption or capture. Screen filters have a consistent structure, like a sieve, retaining particles larger than the pore size on the surface (the pore size of such filters is highly precise). Surface filters have a multi-layer structure; when liquid passes through, particles larger than the internal pores are retained and primarily accumulate on the filter surface. Due to the different functions of these three filter types, distinguishing between them is important. Depth filtration is an economical method, removing over 98% of suspended solids while protecting downstream purification units from fouling or clogging, making it commonly used as a pre-filtration step (e.g., the PP pre-filtration in the Peiyi Laboratory Ultrapure Water System is a type of depth filtration). Surface filtration removes over 99.99% of suspended solids and can also serve as pre-filtration or clarification. Microporous membranes (screen filters) are typically placed at the final point of use in purification systems to remove trace residues 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 (RO) 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 pure water is produced using RO systems. RO technology utilizes a pressure-driven membrane separation process with pores as small as nanometers (1 nanometer = 10⁻⁹ meters). Under certain pressure, H₂O molecules pass through the RO membrane, while impurities such as inorganic salts, heavy metal ions, organic matter, colloids, bacteria, and viruses are retained. This separates pure water from concentrated brine. The principle of reverse osmosis is illustrated as follows: When two solutions of different concentrations are separated by an RO membrane, osmosis occurs naturally. Osmotic pressure pushes water through the 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 the RO membrane, water production is slow, requiring significant time to accumulate sufficient water in the storage tank. RO membranes exclude ions, allowing only water to pass while retaining all other ions and dissolved molecules (including salts and sugars), which are carried away as concentrate. Based on source water and product water quality, RO is the most cost-effective method for purifying tap water into pure water when properly designed. 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 a pressure difference across the membrane. Using an ultrafiltration membrane as the filtering medium, under certain pressure, when the feed liquid flows over the membrane surface, the densely packed micropores 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. This achieves purification, separation, and concentration of the feed liquid. The working principle is shown in the diagram below. Ultrafiltration membranes are tough, thin, selective permeable membranes with physical pore sizes typically between 0.001–0.1μm, 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 violet end of the spectrum, hence its name. It is divided into three bands based on wavelength: A, B, and C. The C-band UV light, with wavelengths between 240–260nm, is the most effective for disinfection, with the strongest point at 253.7nm. The principle of UV disinfection is generally attributed to nucleic acids in organisms absorbing UV energy, altering their structure, and thereby disrupting their function. When nucleic acids absorb a lethal dose of energy and UV exposure is maintained for a certain time, bacteria die in large numbers. Advances in UV lamp manufacturing have enabled the production of lamps that simultaneously emit 185nm and 254nm wavelengths. This combination of wavelengths utilizes photo-oxidation to break down organic compounds, reducing the total organic carbon (TOC) concentration in ultrapure water to below 5ppb.
RUPT Series Ultrapure Water System Performance Features
· Self-check upon startup, large-screen LCD dot matrix display with Chinese interface.
· Animated program operation display, water production and internal circulation interface display, water full interface display, and alarm functions for pure water and ultrapure water quality exceeding standards.