| In this paper, by researching the application of EGSB to dispose the polluted water produced in wine factory, design and build the EGSB system in lab. By controlling the condition and constants, the system runs effectively. At the same time, using 3~stages method and United Design method (UN) to select constants of the EGSB. The examples using the methods are given. The results are useful for the application and deep researching in EGSB. |