The most economical but must halophilic bacteria screening operation condition controlled strictly, affected by fluctuations in water salinity, sudden high salt environment will cause the loss of system processing power and even paralysis
High salt as microbial tao and toxic agent , can be diluted, will fill the salinity is lower than poison domain values, biological treatment would not be resisted. This method is simple, easy to operation and management; the downside is cause the waste of water, large processing facilities. Investment, operation cost increase
It is a relatively economic and effective way when salinity is greater than 2g/L