Circulating cooling water quality monitoring

    The circulating cooling water system is a water supply system that is recycled after heat exchange in a heat exchanger and cooling in a cooling tower. As a core technology for industrial water conservation, it can inhibit scaling and corrosion, extend equipment life, and improve circulation efficiency through water quality monitoring and chemical regulation. It can achieve efficient circulation of water resources, reduce pollution emissions, promote closed-loop management of industrial water use and green transformation of high-water-consuming industries, and help save water, reduce emissions and achieve sustainable development.

Circulating cooling water quality monitoring indicators

1. pH: An indicator that reflects the pH value in water. It dynamically adjusts the acid-base balance and combines with corrosion inhibitors to synergistically control corrosion and scaling.

2. Conductivity:  It reflects the ion concentration in the water and controls the concentration multiple by monitoring the conductivity to avoid scaling or corrosion caused by excessive salt.

3. Suspended solids concentration : Monitoring suspended solids can prevent pipe blockage, corrosion and microbial growth, ensure system efficiency, extend equipment life, and reduce energy consumption and maintenance costs.

4. Turbidity : Monitoring turbidity can prevent the deposition of suspended matter, avoid corrosion and reduced heat transfer efficiency, ensure stable system operation and extend equipment life.

5. Residual Chlorine: It refers to the residual amount of free chlorine in water. When the residual chlorine concentration is too low, the bactericidal effect is insufficient; if it is too high, it may aggravate the corrosion of metal equipment.

Circulating cooling water quality monitoring system

    Water quality meters are used to monitor water quality parameters such as pH, conductivity, residual chlorine, suspended solids, etc. in the entire circulating cooling water treatment process, and real-time data is stably transmitted to the back-end monitoring system via RS485. Multi-dimensional analysis is performed based on big data models and AI algorithms to achieve intelligent early warning and optimization, ensuring that water quality continues to meet standards. At the same time, it extends equipment life and reduces energy consumption, providing a safe, economical and intelligent full life cycle management solution for industrial circulating cooling water systems.

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.