Nitrogen cannot be removed by membrane denitration
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The company uses MRO system equipment for nitrogen removal; however, the nitrogen removal process has not been functioning properly recently. The parameters related to pre-treatment are within acceptable limits, but nitrogen is not being removed during post-treatment, and the cause has not been identified yet. Please help analyze this issue; thank you
This post was last edited by smartcatii on 2017-8-17 08:07. No data available for analysis; what are the values of various performance indicators? It would be best to have screenshots of the control indicator interface, showing the analysis indicators for sulfate levels in concentrates, permeates, etc. Possible factors include insufficient freezing temperature, low sulfate concentration in the concentrate, and an unreasonable structure of the nitrate precipitator.
If the original poster wants everyone to help analyze the problem, detailed data is needed, as the user above mentioned. Without any details like these, your vague and superficial questions won’t enable those who want to help you to give answers!
The pre- and post-treatment data, as well as information on equipment and process flows, are uploaded
Yes, no nitrate is produced; since there is no data available, we can only guess. The possible reasons are as follows: 1. The concentration of the concentrate is not high enough, 2. The temperature in the nitrate precipitation unit is not low enough, as the solubility of sodium sulfate depends on temperature. 3. The structure in the nitrate precipitation tank is poor, resulting in poor nitrate precipitation efficiency. 4. The discharge port of the nitrate precipitation tank is blocked; I didn’t expect it to be the centrifuge