Why does the sewage treatment operation union recruit some technical secondary schools and high school students? I think many jobs have been written, and it seems that even junior high schools have wr

Why does the sewage treatment operation union recruit some technical secondary schools and high school students? I think many jobs have been written, and it seems that even junior high schools have written them. Because on the one hand, the salary of sewage treatment operation is not high, and the technical level is not high, they just need to turn on the power supply, turn off the machine and copy the materials, so if they train a junior high school student, they can do very well, and they don't need a high education at all. Don't think that all sewage treatment operators are senior professionals.