Is the aluminum chloride inline refractometer reliable?

July 26 2022

  Flocculants are commonly used in the treatment process of water plants, and there are the following flocculants: polyaluminum chloride, ST flocculants, flocculants No. 3, active silicon flocculants, polysilicate flocculants, high-efficiency decolorization flocculants, polyacrylamide flocculants. Here we mainly talk about the flocculant of polyaluminum chloride.

aluminum chloride

  Polyaluminum chloride flocculant as catalyst and auxiliary, water treatment agent, is a new type of inorganic polymer flocculant, is an efficient, fast, low-consumption water treatment agent. Chemical formula Al2Cl (OH)5, English name referred to as PAC, the nature of this product is colorless or yellow resinous solid, its solution is colorless or yellow-brown transparent liquid, sometimes due to impurities and gray-black mucus.

  The main function of polyaluminum chloride flocculant is to instantly neutralize the negative charge carried by the colloidal particles in the water, so that the colloidal destabilizes, the colloidal particles are rapidly flocculated, and further bridged to generate large flocs and rapid precipitation. The turbidity removal effect is compared according to the active ingredient, which is 1. 5~3 times, the flocculation effect of low temperature turbid water and high turbidity water is incomparable with ordinary inorganic coagulants.

  Widely used in urban water supply treatment, water reuse treatment, urban sewage treatment, oilfield reinjection water treatment, circulating cooling water treatment, industrial water supply treatment and papermaking, printing and dyeing, leather, ceramics, metallurgy, mining, oil, fluorine, coal washing and other industrial wastewater treatment. The effective dosage of the product is 20~50mg/L. Liquid products can be directly dosed and dosed, and solid products need to be prepared into 10%~15% solution in the dissolving tank and dosed according to the required concentration. Polyaluminum chloride can also be used in paper sizing, casting molding, pharmaceutical refining, cosmetics manufacturing, catalyst carrier, sludge dehydration, cement fast setting, cloth wrinkle prevention, sugar solution, glycerin refining and other aspects.

  At present, in the water treatment process of the water plant can be detected by using an inline concentration detector to detect the concentration of flocculant, China’s instrumentation industry after years of development, the development of solution inline concentration detection instrument in this field has achieved good results, of which flocculant inline concentration detector also performed well.


  Chuyi measurement and control IPRM-G-ALCL3 polyaluminum chloride flocculant on-line concentration meter is a general product with high precision and high temperature resistance launched by Chuyi measurement and control, developed based on optical principles, through the light refractive index of the liquid and the established mathematical model to analyze the concentration of the solution, suitable for the inline detection of polyaluminum chloride solution concentration at temperatures below 100 °C. The product integrates real-time concentration measurement, digital tube display and signal output (including 4-20mA analog signal and RS485 digital signal output, with 2 switching control signal outputs). IPRM-G-ALCL3 inline concentration meter is commonly used in pipeline bypass installation and small pipe diameter flow cell installation, and explosion-proof box can also be added according to the needs of on-site use.

  Main parameters:
  Measuring range: 0.0 – 80.0% Resolution: 0.01% Temperature: 0.1°C
  Measurement accuracy: ± 0.1% Temperature: ±0.2°C Temperature compensation: 5-40°C
  Input power: 24V DC protection level display part: IP65
  Process pressure: < 1 MPa Wetted material: Hastelloy or SUS316L

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