Abstract
The wastewater containing extreme high levels of ammonia and salt was treated by vacuum membrane distillation (VMD). The effects of feed flow rate, temperature and vacuum degree on ammonia removal efficiency (ARE) were investigated systematically. The ARE can be promoted by increasing feed flow rate, feed temperature and vacuum degree in this study. The theoretical mass transfer model was obtained based on series of theory derivation, and the theoretical released ammonia is consistent with the experimental data at conditions ranged in this study, indicating that the developed model is suitable to evaluate the ammonia removal during VMD process.
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