Deamination technology in ammonia-nitrogen wastewater treatment
Ammonia nitrogen in water has the following balance: NH4-+OH-NH3+H2O, wastewater containing ammonia nitrogen flows in the shell side of membrane module, and acid absorption liquid flows in the tube side of membrane module. When the PH or temperature in wastewater increases, the above equilibrium will move to the right, and ammonium ion NH4- will become free gaseous NH3. At this time, gaseous NH3 can penetrate into the micropores on the surface of the hollow fiber in the acid absorption liquid phase of the tube side from the waste water phase of the shell side and be absorbed by the acid solution, and immediately become ionic NH4-. Keep the PH value of wastewater above 10, and the temperature above 35℃ (below 50℃), so that NH4 in the wastewater phase can be continuously transformed into NH3, which will migrate to the absorption liquid phase. So that the ammonia nitrogen concentration on the waste water side is continuously reduced; The acid absorption liquid phase only contains acid and NH4-, so a very pure ammonium salt is formed, which can be recycled after continuous circulation. For more information about deamination technology, please consult a professional environmental protection company.