Common sewage ammonia nitrogen treatment for higher levels of ammonia nitrogen,
1. Microbial denitrification: the ammonia nitrogen is converted to nitrite by microbial method, then converted to nitrate, then denitrified and denitrated, and nitrogen is discharged to the atmosphere;
2. Blowing off method: the non-ionic ammonia in the waste water is blown off to the atmosphere. Due to the limitation of the relevant emission limit of ammonia in the Emission Standard of Odor Pollutants (GB 14554-93), the number of necessary fans is large. And the energy consumption is high, and the end result is high equipment investment and high operating costs.
For medium and low levels of ammonia nitrogen,
1. Adsorption method: a process in which the concentration of one or several substances (called adsorbates) is automatically changed on the surface of another substance (called an adsorbent), and the essence is that no food flows from the liquid phase or the gas phase to a mass transfer phenomenon on a solid surface;
2. Chemical method: directly add a kind of agent which can reduce the concentration of ammonia nitrogen in the sewage - ammonia nitrogen remover; ammonia nitrogen remover is a polymer inorganic compound containing a special framework structure, the removal rate of ammonia nitrogen is up to More than 90%, no pollution.
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