Desalinated water quality monitoring

    Desalination water treatment is the core technology for coping with global water shortage and pollution. It not only alleviates the pressure of industrial water use, but also promotes seawater desalination and high-salt wastewater resource utilization. By accurately monitoring water quality, process parameters can be optimized, equipment life can be extended, and water quality can be guaranteed to meet standards, thereby achieving efficient recycling of water resources and promoting green manufacturing and ecological civilization construction.

Desalinated water quality monitoring system

    The water quality instrument monitors the pH, conductivity, dissolved oxygen, suspended solids and other water quality parameters in the entire desalted water treatment process, and transmits the real-time water quality status to the back-end monitoring system via RS485 for real-time management and monitoring. At the same time, combined with data analysis, it can warn of abnormalities in advance (such as membrane pollution, resin failure), optimize the dosage of reagents and process parameters, and ensure that the effluent meets the standards. It can not only extend the life of the equipment and reduce energy consumption, but also ensure water safety and achieve efficient, economical and sustainable water resource management.

1. pH: The indicators reflecting the pH value of water affect the exchange efficiency of ion exchange resins and the stability of membranes. Excessively high pH may accelerate resin scaling, while too low pH may corrode the membrane material.

2. Dissolved oxygen: Important parameters reflecting the natural environment and REDOX conditions of water bodies. An increase in dissolved oxygen content can promote the metabolic activity of bacteria, but at the same time, it may also accelerate the membrane lysis.

3. Conductivity:  Reflects the ion concentration in water and is the core indicator for measuring desalination effect. The lower the conductivity, the less ions there are in the water. If the conductivity increases, it will lead to membrane pollution or resin failure.

4. Suspended solids concentration : Suspended solids are the main cause of reverse osmosis membrane blockage. Monitoring suspended solids can prevent membrane pollution and extend membrane life. Then, the amount of coagulant added or the sedimentation time can be adjusted to improve the pretreatment efficiency.

5. Turbidity : Reflect water clarity. High turbidity influent will cause pollutants to deposit on the membrane surface, forming a fouling layer, reducing membrane flux and increasing operating pressure, ultimately shortening membrane life.

6. Hardness : By monitoring the hardness, the softening process can be adjusted in time to avoid the formation of scale layers caused by the combination of calcium and magnesium ions with acid radicals, which leads to reduced membrane flux and thus prolongs the membrane life.