Nuclear Power Membrane Separation Technology

‌Working Principle

In nuclear power plants, boric acid is added to the primary loop to control reactivity, but this can lead to issues with dissolved silica in the boron-containing water. Membrane separation technology utilizes specialized nanofiltration membranes to separate dissolved silica and boric acid in water. The process operates as follows:

Nanofiltration Membrane Separation: The nanofiltration membranes are designed with selective permeability, effectively separating boric acid and silicic acid from water. The membrane's pore size allows water molecules to pass through while blocking larger molecules such as silicic acid and silica colloids

Concentration Adjustment: The membrane action reduces the silica concentration in the water pool to approximately 400 ppb, while minimizing the loss of boric acid to ensure the safe operation of the nuclear power plant.

Waste Liquid Reduction: The technology reduces the volume of waste liquid discharged, thereby lowering the environmental impact.



Product Features

High Selectivity: Nanofiltration membranes can effectively separate dissolved silica and boric acid, minimizing cross-contamination between similar substances.

High Recovery Rate: The technology ensures a high recovery rate of boric acid, preventing the increase of radioactive waste.

Strict Water Quality Control: Meets the stringent water quality requirements of nuclear power plants, preventing the introduction of impurities.

Automated Design: The system is fully automated for ease of operation, allowing for one-click control that reduces the risk of accidents caused by human error.

Efficient Processing: Achieves high water treatment efficiency with relatively low energy consumption.






Application Areas

Nuclear Power Plants: Primarily used in the water treatment of the primary loop in nuclear power plants to control reactivity and prevent silica salt precipitation, ensuring the safe operation of the unit.

Other Energy Industries: Applicable in other energy sectors that require strict water quality control.

Industrial Wastewater Treatment: Effective in removing harmful components in industrial wastewater that contains boron and silica.

Environmental Protection: Plays an important role in environmental protection by reducing the amount of radioactive waste generated.