Resalt® Series Industrial Pure Water Reverse Osmosis Membrane Products
Shuiyi Resalt® series industrial pure water reverse osmosis membrane products include RBW-HR, and RBW-LE models, effectively removing dissolved inorganic salts, organics, and silica.
RBW-HR, recommended for the first stage of desalination systems, delivers exceptionally high salt rejection rates to meet the demands of high recovery and high-quality permeate.
RBW-LE, recommended for the second stage of desalination systems, operates at lower pressures while achieving higher water production rates.
Description
- High desalination rate
Resistant to chemical cleaning and short-term chlorine shocks, the highly cross-linked separation layer maintains a stable desalination rate, with an average rate of 99.7%. - High water production flux
Option for a larger area 440 module, stable water production up to 44m³/d, meeting low-temperature operational water production needs.
Data Sheet
| Model | Parameter | ||||||
| Item | RBW-HR8040 | RBW-HR4040 | RBW-LE8040 | RBW-LE4040 | |||
| Membrane element parameters⁽¹⁾ | Effective membrane area | 37m² | 8.4m² | 41m² | 8.4m² | ||
| Membrane material | Aromatic polyamide | ||||||
| Structure | Spiral-wound | ||||||
| Inlet mesh thickness | 34 mil | 28 mil | |||||
| Dry membrane weight | 13kg | 4kg | 15kg | 4kg | |||
| Wet membrane weight | 15kg | 4.5kg | 17kg | 4.5kg | |||
| Length | 1016mm | ||||||
| Diameter | 201mm | 99mm | 201mm | 99mm | |||
| Permeate collector installation diameter | 29mm | 19mm | 29mm | 19mm | |||
| Connection length | – | 27mm | – | 27mm | |||
| Standard test solution | 2000mg/L NaCl | 1500mg/L NaCl | |||||
| Operating pressure | 1.55MPa | 1.03MPa | |||||
| Test temperature | 25℃ | ||||||
| Recovery rate | 15% | ||||||
| pH | 7~8 | ||||||
| Water production rate⁽²⁾ | 41m³/d | 8.5m³/d | 44m³/d | 8.5m³/d | |||
| Standard rejection rate | 99.7% | 99.5% | 99.4% | ||||
| Membrane operational parameters | Maximum operating pressure | 4.1MPa/600 psi | |||||
| Maximum inlet water flow | 17m³/h | 3.6m³/h | 17m³/h | 3.6m³/h | |||
| Inlet water temperature range | 5~40℃ | ||||||
| Inlet water pH range | 2~11 | ||||||
| Cleaning pH range⁽³⁾ | 1~13 | ||||||
| Maximum inlet water turbidity | 1.0NTU | ||||||
| Maximum inlet water SDI₁₅ | 5.0 | ||||||
| Inlet water residual chlorine | <0.1mg/L | ||||||
| Maximum pressure drop per element⁽⁴⁾ | 0.1MPa | ||||||
Note:
(1) The parameters listed are measured after 30 minutes of stable system operation;
(2) Water production rate has a deviation range of ±15%;
(3) Chemical cleaning recommended at temperatures ≤30°C, above which cleaning solution pH shall not exceed 2.0-12.0;
(4) In multi-element housings, the maximum pressure drop from inlet to outlet should be controlled within 0.25MPa, not exceeding 0.3MPa in extreme cases;
(5) RBW-HR and RBW-LE may also use the 440 high-flow and 4040 commercial membrane elements.
The data presented herein have been tested and are reliable, but variability may occur due to different testing methods and operating conditions. Therefore, usersshould combine practical application processes and thoroughly understand the products of Ningbo Shuiyi MembraneTechnology Development Co., Ltd.
Applications
Due to the high desalination rate, and high water production, Shuiyi Resalt® series industrial pure water reverse osmosis
membrane products are widely used in industrial water fields like power, coal chemical, and light industries.
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