The experimental research and analysis of the reverse osmosis technology on the waste water reusing of the plant cooling water

摘要

This paper studied the influence of the feed water PH value on the reverse osmosis system in the process of the sewage reusing of the power plant circulating water. The utmost recovery rate was made out through experiments, at different feed water PH value, on condition that the concentrated water did not scale. The influence of the PH value on the salt desalting rate of the reverse osmosis system was investigated, the results show that the highest desalination rate is up to 99.6%, when the PH value is 8.0～9.0. Comparing the different operating cost in different operating conditions, it's found that when the PH value is 8.0, the reverse osmosis systematic recovery rate is 72%, which is the most economical operating condition.