What is the reason for the increase in conductivity while the waste liquid is still qualified?
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In the Stamicell hydrolysis desorption process, the waste liquid is of acceptable quality; what is the reason for the increase in conductivity?
By qualified, do you mean ammonia? Ammonia is not the only substance that affects conductivity; check for other impurities
Go and have a test done; if both UR and NH3 are below 3PPM, corrosion may be present due to the presence of iron and nickel. It is also necessary to calibrate the conductivity instrument, and use multiple instruments for testing.
Ammonia itself needs to ionize, and urea also needs to hydrolyze; therefore, a high conductivity is quite normal. As analyzed by Xishui, the waste liquid may contain substances such as iron and nickel, which cause a high electrical conductivity.
This post was last edited by 1025199692 on 2009-12-5 07:38. But every time I suspect there is a problem with the conductivity meter, it says it cannot be calibrated. Does anyone know how to calibrate it?
This post was last edited by lxq700918 on 2009-12-5 11:38. This issue should be quite simple – just conduct a desalinated water analysis to verify it!
It means using this instrument to measure the conductivity of desalinated water, right? So what is the conductivity of desalinated water?
This post was last edited by Xieshui on 2009-12-10 at 19:57. Friends above, doesn’t your laboratory have a conductivity meter? The one with electrodes – ask the analyst to take a sample for calibration. The conductivity of normal desalinated water ranges from 0.04 to 0.08 us/cm. Some actual measurement data have been obtained for reference: UR: 1.2~1.58PPM; NH3: 1.8~3.2PPM; Fe: 0.10PPM; Ni: 0.08PPM; Conductivity: 30~65uS/CM.