Judging the type of pollution of ultrapure water machine
In the process of using ultra-pure water machine , with the use of equipment, the performance of the equipment is gradually attenuated. In addition to the normal attenuation of the equipment, the attenuation of ultra-pure water machine performance caused by pollution is more serious. There are many types of pollution, so how should the pollution type of ultrapure water machine be judged? Identification of pollution types should be based on the combination of raw water quality, design parameters, pollution index, operational records, equipment performance changes and microbial indicators: 1. Colloidal pollution: When colloidal contamination occurs, it is usually accompanied by the following two characteristics: A. The microfilter is blocked quickly in the pretreatment, especially the pressure difference increases rapidly. B, SDI value is usually above 2.5. 2. Microbial contamination: When microbial contamination occurs, the total number of bacteria in the permeated water and concentrated water of the RO equipment is relatively high, and it must not be maintained and disinfected as required. 3, calcium scale: can be judged according to the raw water quality and design parameters. For carbonate type water, if the recovery rate is 75%, the scale inhibitor is added at the time of design, the LSI of the concentrate should be less than 1; the LSI of the concentrate should be less than zero when no scale inhibitor is added. No calcium scale is produced. 4, 1/4 inch PVC plastic tube can be inserted into the assembly to test the performance changes of different parts of the component to judge. 5. Determine the type of pollution based on changes in equipment performance. 6, can be pickled (such as citric acid, dilute HNO3), according to the cleaning effect and cleaning solution to determine calcium scale, further confirmed by the analysis of the composition of the cleaning solution. 7. Chemical analysis of the cleaning solution: take raw water, cleaning stock solution, cleaning solution, and three samples for analysis. When the type of contamination cannot be determined, it is usually cleaned by washing (3) + disinfection + 0.1% HCl (pH 3). Disposable Long Arm Green Veterinary Gloves Long Arm Green Veterinary Gloves,Green Veterinary Glove,Artificial Insemination Gloves,Long Veterinary Gloves Disposable Jinan Mucho Commercial Inc. , https://www.muchovet.com