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KY-RO500L/H
KAIYUAN
Product Description
This is an integrated water treatment system built around reverse osmosis (RO) as its core separation technology, with a rated permeate flow of 500 liters per hour (0.5 m³/h at 25°C). The entire unit adopts a skid-mounted frame structure, integrating the pretreatment stage, high-pressure pump, RO membrane housings, electrical control system, and online instruments onto a stainless steel frame. Once the inlet and outlet connections are made, the system is ready for commissioning.
The two vertical stainless steel vessels on the left are the quartz sand filter and the activated carbon filter, responsible for primary purification and the removal of residual chlorine and organic matter. The control panel on the right houses the feed pressure gauge, permeate pressure gauge, concentrate flow meter, permeate flow meter, online conductivity monitor, and start/stop and emergency-stop controls. Beneath the panel sits a vertical multistage centrifugal high-pressure pump, providing the 0.5–1.0 MPa transmembrane driving force for the RO membranes. The piping, frame, vessels, and control cabinet are all made of food-grade 304 stainless steel, offering excellent corrosion resistance in humid plant environments and meeting the hygiene requirements for potable water, food and beverage, and pharmaceutical applications.
The process flow is compact and clear: feed water is pressurized and passed through the quartz sand filter to intercept suspended solids and colloids, then through the activated carbon filter to adsorb residual chlorine, odor, and some organics. It then passes through a precision safety filter into the high-pressure pump and is pushed into the RO membrane array. Driven by the pressure differential, the RO membrane allows only water molecules to pass while dissolved salts, heavy metal ions, bacteria, viruses, pyrogens, and macromolecular organics are rejected and discharged with the concentrate. The permeate flows into a pure water tank or directly to the point of use. The salt rejection rate is stable above 97%, and the permeate conductivity is typically controlled within 10 μS/cm.
Many systems in this capacity range use powder-coated carbon steel or UPVC for the frame or piping. That may work in the short term, but in a humid, frequently washed water treatment room, rust and hygiene dead spots are only a matter of time. This unit unifies the main frame, pretreatment vessels, piping, and control cabinet shell in 304 stainless steel. The wetted parts are free from plastic aging and leaching concerns. This not only extends service life in harsh environments but also gives the system the “entry qualification” for hygiene-sensitive applications such as potable water, food and beverage, and pharmaceuticals.
The RO membrane is the most expensive component and the one with the most passive replacement logic. Its lifespan depends not on the membrane itself but on how clean the water is before it reaches the membrane. The quartz sand filter first intercepts sediment, rust, suspended solids, and colloids. The activated carbon filter then adsorbs residual chlorine, color, odor, and some dissolved organics. These two barriers substantially reduce the risks of colloidal fouling, chlorine oxidation, and organic plugging before they reach the membrane. For users sourcing from municipal tap water or groundwater, this “sand + carbon” combination is the most practical insurance for long-term stable RO operation.
500 liters per hour is a “sweet spot” capacity validated by a large number of commercial and light industrial applications. It does not strain at peak demand like units below 250L/H, nor does it require the upfront investment and footprint of ton-level systems. For morning peak draw by around 15 people, small bottled water filling lines, multi-point laboratory solution preparation, or continuous supply in restaurant kitchens, this output is sufficient without frequent start-stop cycling. For operations with water use concentrated during the day shift and no production at night, combined with a pure water tank buffer, the match between 500L/H production capacity and water use rhythm is particularly reasonable.
On the control panel, feed pressure and permeate pressure are displayed on opposite sides, permeate and concentrate flow meters are arranged side by side, and the conductivity display window reflects permeate quality in real time. Operators do not need to navigate menus to find parameters. The difference between pressure gauge readings provides a preliminary indication of membrane fouling trends, and flow meter comparison quickly identifies whether the recovery rate has deviated from the design range. This “direct-read instrumentation” approach lowers the cognitive threshold for daily inspections and makes early detection of abnormal conditions possible.
Beyond the standard configuration, the system reserves interfaces and space for expansion. If feed water hardness is high, a water softener or antiscalant dosing system can be added. If stricter microbiological requirements apply, UV sterilizers or ozone generators can be integrated at the permeate outlet. For control, PLC touchscreen and automatic cleaning systems can be selected on top of the basic push-button control. This “base platform + on-demand add-ons” logic allows the same model to adapt to differentiated needs ranging from municipal tap water to groundwater, and from drinking water to process pure water.
Permeate Flow: 500 L/H (0.5 m³/H at 25°C)
Salt Rejection Rate: ≥97% (varies with feed water quality and operating conditions)
Water Recovery Rate: 50–75% (varies with feed TDS, temperature, and membrane fouling degree)
Permeate Conductivity: ≤10 μS/cm (under typical municipal tap water feed conditions)
Pretreatment Configuration: Quartz sand filter + activated carbon filter + precision safety filter
RO Membrane: 4040 membrane elements (quantity depends on specific configuration, typically 4–6 elements)
High-Pressure Pump: Vertical multistage centrifugal pump, brand optional (e.g., CNP/Grundfos or equivalent quality domestic pump)
Main Body Material: 304 stainless steel frame, vessels, piping, and control cabinet
Inlet Connection: DN25 / 32 mm (depending on specific batch)
Operating Pressure: Pretreatment stage 0.2–0.4 MPa; RO stage 0.5–1.0 MPa
Applicable Water Sources: Municipal tap water, groundwater, well water, etc. (TDS recommended ≤1000 ppm)
Control Mode: Push-button electrical control panel (standard); optional PLC touchscreen
Main Unit Dimensions and Weight: Approx. 2000 × 1200 × 1400 mm, net weight approx. 400 kg (varies slightly with configuration)
Bottled water, barreled water filling, beverage blending, and CIP cleaning water. The 500L/H continuous output matches the single-shift production rhythm of small water plants and beverage workshops. The stainless steel wetted surfaces comply with food processing hygiene standards.
Chain restaurant kitchens, central kitchens, office pantries, and coffee shops. RO permeate is used for ice making, cooking, and beverage preparation, significantly reducing scale attack on steamers, coffee machines, and water boilers, and lowering descaling frequency.
Medical device cleaning, biological formulation preparation, oral liquid production, and external preparation dilution water. A two-stage RO configuration can further reduce permeate conductivity to below 2 μS/cm, meeting pharmacopoeia purified water conductivity requirements.
PCB cleaning, electroplated parts rinsing, coating pretreatment, and battery manufacturing water. RO permeate removes dissolved salts, reducing water marks and ionic residue on cleaned parts and improving downstream process yield.
Hospital clinical laboratories, school laboratories, and hemodialysis auxiliary water supply. The RO membrane's rejection of bacteria and endotoxins makes it a reliable front end for laboratory pure water preparation and medical cleaning water.
Centralized drinking water systems for primary and secondary schools, government offices, and industrial park administrative buildings. With a storage tank and instant-heating drinking terminals, the 500L/H system maintains stable supply during concentrated draw periods such as class breaks or lunch breaks, avoiding peak-hour interruptions.
The unit is a frame-mounted complete system and should be transported upright as a whole. Before leaving the factory, the system has completed piping pressure testing and electrical insulation checks. Upon arrival at the site, only the feed water inlet, permeate outlet, concentrate discharge, and power supply need to be connected before commissioning can begin.
Packaging uses reinforced wooden crates or steel-banded frames, with protective film covering the stainless steel surfaces to prevent scratches during transit. Transport and storage environments should avoid open-air stacking. Ambient temperature is recommended to remain between 5–40°C, and relative humidity should not exceed 85% for extended periods to prevent moisture damage to electrical components. During loading and unloading, the unit must remain upright. Inversion or tilting is strictly prohibited. Lifting should use the frame load-bearing points, avoiding pressure on piping and instruments.
After delivery, initial commissioning is recommended to be performed by personnel with water treatment experience. Key checks include pretreatment backwash/forward wash procedures, high-pressure pump rotation direction, and whether RO stage pressure and flow are within the set range. The concentrate discharge valve opening should be adjusted according to local feed water quality to match the recovery rate.
| Item | Parameter |
|---|---|
| Model | RO-500L/H |
| Rated Permeate Flow | 500 L/H (25°C) |
| Salt Rejection Rate | ≥97% |
| Water Recovery Rate | 50–75% |
| Permeate Conductivity | ≤10 μS/cm (typical municipal feed water) |
| Pretreatment | Quartz sand filter + activated carbon filter + precision filter |
| RO Membrane Specification | 4040 type (quantity depends on configuration) |
| High-Pressure Pump | Vertical multistage centrifugal pump |
| Main Body Material | 304 stainless steel |
| Inlet Connection | DN25 / 32 mm |
| Operating Pressure | Pretreatment 0.2–0.4 MPa; RO 0.5–1.0 MPa |
| Control Mode | Push-button electrical control (standard) / PLC touchscreen (optional) |
| Main Unit Dimensions (approx.) | 2000 × 1200 × 1400 mm |
| Net Weight (approx.) | 400 kg |
| Power Supply | 220V/380V, 50/60Hz (depending on configuration) |
In practical discussions of commercial and light industrial water treatment equipment, “stability” is a keyword repeatedly mentioned for 500L/H-class RO systems. One user operating a small filling business described their experience: during the three-year warranty period, only two pretreatment filter cartridge replacements were needed, the core RO membrane has not triggered any abnormal pressure differential alarms, and permeate TDS has remained stable at a low level. Another user who integrated the system into an office pantry emphasized the importance of capacity matching: the 250–500L/H output eliminates queuing during morning peak draw, and the coordination between instant-heating drinking terminals and the water production unit is significantly better than the previous small-flow commercial model.
Some practitioners also offer a more measured observation from an O&M perspective: the long-term performance of an RO system is 70% dependent on feed water pretreatment and 30% on the membrane itself. Regular backwashing of the quartz sand and activated carbon, monthly replacement of precision filter cartridges, and continuous attention to feed pressure are more practical than pursuing “how many years the membrane can last.” This exactly echoes the logic of this unit's dual-vessel pretreatment as standard configuration—do the controllable things well and keep uncontrollable risks outside the membrane.
The 500L/H all-stainless steel reverse osmosis water treatment system is not a device chasing extreme specifications, but a water production platform that strikes a pragmatic balance among capacity, hygiene grade, maintainability, and footprint. It suits small and medium-scale scenarios where water demand is not massive but there are clear requirements for supply continuity and water quality consistency: a beverage workshop, a laboratory floor, a campus drinking water point, or an electronics cleaning line. Its value lies not in any single “highlight feature,” but in the durable baseline provided by the stainless steel architecture, the membrane protection logic brought by dual-vessel pretreatment, and the 500L/H capacity rhythm calibrated by numerous scenarios—the long-term operability formed by the combination of these three.
