What are the treatment methods of ammonia nitrogen wastewater?

Ammonia nitrogen wastewater treatment method:

1. Blow-off method: under alkaline conditions, ammonia nitrogen is separated by using the gas-liquid equilibrium relationship between gas concentration and liquid concentration. It is generally believed that blowing-off is related to temperature, PH value and gas-liquid ratio.

2. Zeolite deamination method: cations in zeolite exchange with NH4+ in wastewater to achieve the purpose of denitrification. The application of zeolite deamination must consider the regeneration of zeolite, which usually includes regeneration liquid method and incineration method. When the incineration method is adopted, the generated ammonia gas must be treated. This method is suitable for the treatment of low concentration ammonia nitrogen wastewater, and the ammonia nitrogen content should be10-20 mg/L.

3. Membrane separation technology: a method of removing ammonia nitrogen by selective osmosis of membrane. The method has the advantages of convenient operation, high ammonia nitrogen recovery rate and no secondary pollution. For example, ammonia nitrogen is removed by gas-water separation membrane. There is dissociation equilibrium of ammonia nitrogen in water. With the increase of PH value, the proportion of NH3 formation in water increases. At a certain temperature and pressure, the gas phase and liquid phase of NH3 reach equilibrium. According to the principle of chemical equilibrium movement, that is, the principle of a. l. lechatier.