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Fully Automatic Reverse Osmosis Direct Drinking Pure Water Equipment Frequency Conversion Constant Pressure Water Supply System

Fully Automatic Reverse Osmosis Direct Drinking Pure Water Equipment Frequency Conversion Constant Pressure Water Supply System Featured Image
  • Fully Automatic Reverse Osmosis Direct Drinking Pure Water Equipment Frequency Conversion Constant Pressure Water Supply System
  • Fully Automatic Reverse Osmosis Direct Drinking Pure Water Equipment Frequency Conversion Constant Pressure Water Supply System
  • Fully Automatic Reverse Osmosis Direct Drinking Pure Water Equipment Frequency Conversion Constant Pressure Water Supply System
  • Fully Automatic Reverse Osmosis Direct Drinking Pure Water Equipment Frequency Conversion Constant Pressure Water Supply System

Short Description:

Equipment name：water treatment equipment

Equipment brand：Wenzhou Haideneng-WZHDN


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I. System Composition
  1. Reverse Osmosis (RO) System
    • Pretreatment Unit
      • Multimedia Filter: Filled with materials like quartz sand, anthracite coal, and garnet. It removes large suspended solids, turbidity, and some colloidal substances from the raw water, protecting the subsequent RO membranes.
      • Activated Carbon Filter: Adsorbs organic matter, residual chlorine, odors, and colors in the water. Residual chlorine can damage RO membranes, so this filter is crucial for membrane protection.
      • Softener (Optional): When the raw water has high hardness, it uses ion exchange resins to replace calcium and magnesium ions with sodium ions, reducing water hardness and preventing scale formation on the membranes.
      • Precision Filter: With a filtration accuracy of usually 5 microns or less, it further removes fine particles and suspended matter to ensure the water quality entering the RO membranes.
    • RO Membrane Module
      • RO Membranes: The core components of the system. These membranes have extremely small pores that can effectively remove dissolved salts, heavy metals, bacteria, viruses, and most organic compounds from the water, producing high-purity direct drinking water.
      • High-Pressure Pump: Provides the necessary pressure to drive the water through the RO membranes. In a frequency conversion system, the speed of the high-pressure pump can be adjusted according to the water demand.
    • Concentrate Discharge and Recovery System: Manages the concentrated water produced during the RO process. Some systems may have a recovery mechanism to reuse a portion of the concentrated water, improving water utilization efficiency.
  2. Frequency Conversion System
    • Frequency Converter: This is the key component of the frequency conversion system. It adjusts the power supply frequency to the motor of the water pump (such as the high-pressure pump and the water supply pump in the subsequent stage). By changing the frequency, it can control the rotational speed of the motor, and thus the flow rate and pressure of the water pump.
    • Control Sensors: Include pressure sensors, flow sensors, and level sensors. Pressure sensors monitor the water pressure in the system and send signals to the frequency converter. Flow sensors measure the water flow rate, and level sensors detect the water level in the storage tanks. These sensors provide real-time data for the frequency converter to make accurate adjustments.
  3. Constant Pressure Water Supply System
    • Water Supply Pump: Delivers the purified water from the RO system to the water storage tank or directly to the water consumption points. In a constant pressure system, the speed of this pump is adjusted by the frequency converter to maintain a stable water pressure regardless of the water demand changes.
    • Water Storage Tank: Stores the purified water to meet the peak water demand. It is equipped with level sensors to monitor the water level and control the operation of the water supply pump and the RO system.
    • Pressure Control Valve: Installed in the water supply pipeline to regulate the water pressure. It can automatically open or close to release excess pressure when the water pressure in the system is too high, ensuring the safety of the system and the water consumption points.
  4. Automatic Control System
    • Programmable Logic Controller (PLC) or Microcontroller: As the control center of the entire system, it receives signals from various sensors (pressure, flow, level, etc.) and controls the operation of components such as pumps, valves, and the frequency converter. It can also monitor the operation status of the system, detect faults, and issue alarms.
    • Human-Machine Interface (HMI): Allows operators to set parameters, monitor the system operation status, and view historical data. It provides a user-friendly interface for system management and maintenance.
II. Working Principle
  1. Reverse Osmosis Filtration: Raw water first enters the pretreatment unit for preliminary purification. Then, it is pumped into the RO membrane module by the high-pressure pump. Under the action of pressure, water molecules pass through the RO membranes, while dissolved salts and other impurities are retained. The purified water is collected, and the concentrated water is discharged.
  2. Frequency Conversion Control: The pressure sensors in the system continuously monitor the water pressure. When the water demand increases, the pressure drops. The frequency converter receives the pressure signal from the sensors and increases the power supply frequency to the water pump motor, increasing the pump speed and the water flow rate to meet the demand. Conversely, when the water demand decreases, the frequency converter reduces the frequency, lowering the pump speed and saving energy.
  3. Constant Pressure Water Supply: The water supply pump, controlled by the frequency converter, maintains a constant water pressure in the water supply pipeline. Whether it is a small water consumption at a low demand time or a large water consumption during peak hours, the system can adjust the pump speed in real-time to ensure that the water pressure remains stable. The pressure control valve also plays a role in regulating the pressure to prevent overpressure.
  4. Automatic Operation: The PLC or microcontroller coordinates the operation of all components based on the sensor signals. It can automatically start and stop the RO system, the water supply pump, and other components, and perform self-diagnosis and fault handling. Operators can also set parameters and monitor the system through the HMI.
III. Advantages
  1. High Water Quality: The reverse osmosis process can effectively remove a wide range of contaminants, providing high-purity direct drinking water.
  2. Energy Efficiency: The frequency conversion system adjusts the pump speed according to the water demand, reducing energy consumption compared to traditional fixed-speed pump systems.
  3. Stable Water Pressure: The constant pressure water supply system ensures a stable water pressure, improving the user experience and protecting water-consuming appliances.
  4. Automatic Operation: The fully automatic control system reduces the need for manual operation and monitoring, saving labor costs and reducing the risk of human error.
IV. Applications
  1. Residential and Commercial Buildings: As a direct drinking water supply system for households, offices, restaurants, and hotels.
  2. Industrial Production: In industries such as electronics, pharmaceuticals, and food and beverage, where high-quality water is required for production processes.
  3. Schools and Hospitals: To provide safe and clean direct drinking water for students, patients, and staff.
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