Yuxin zeolite to selectively adsorb ammonia has a strong capacity, the exchange capacity is much greater than the use of activated carbon and ion exchange resin ion exchange zeolite adsorption capacity of ammonia removal of wastewater include: zeolite adsorption phase and regeneration phase, Ammonia Adsorption stage.
Zeolite regeneration phase, can be divided into chemical regeneration and biological regeneration method 1, chemical regeneration: Processing zeolite adsorption saturated with alkali or salt solution (NaOH, NaCl), a solution of Na + or Ca2 + exchange NH4 zeolite on the +. recovery of ammonia in the zeolite exchange capacity 2, biological regeneration: Application of zeolite as a microorganism carrier, so that the growth of nitrifying bacteria attached to its surface, so that the action of nitrifying bacteria, ammonia concentration in the aqueous phase decreased, prompting a reversal in the exchange balance , has been adsorbed on the zeolite exchanged NH4 + cations are exchanged water and the other down, nitrifying bacteria being used. Such ion exchange capacity of the zeolite has been restored.
Zeolite having a better ammonia ion exchange adsorption capacity, microbial and easy attachment and other characteristics, and ease of development, low cost, non-toxic side effects, in terms of ammonia wastewater treatment has a good prospect. Domestic and foreign researchers in the zeolite Applications kinds of water treatment technological aspects were studied, we got a lot of valuable results.
Zeolite plays a significant role in reducing the impact load, reduce the impact of disincentives to aerobic or anaerobic treatment process aspects, and can improve the overall processing efficiency of the system; in other process applications exhibited stronger for NH4 + -N removal efficiency and it can be restored by switching the adsorption capacity of the biofilm nitrification regeneration.
Zeolite current research Most of ammonia wastewater in the laboratory or pilot research level, in the actual project yet undertaken large-scale applications can also be more in-depth research in some aspects: Application zeolite improvement of traditional treatment processes, optimizing engineering design and processing; Application of multivariate statistical analysis of the impact of the zeolite processing system; the application of molecular biology in-depth study the mechanism of zeolite adsorption and regeneration process of exchange, optimize process design and operation methods.