Another technical problem in environmental protection is how to shorten the retention aeration time in the biochemical reaction tank in the process of sewage treatment in order to improve the speed of sewage treatment. One solution is to find a more suitable microorganism in the activated sludge; another is to add an enzyme to the sludge to speed up the reaction, which acts as a catalyst in the biochemical reaction and does not decrease in itself. However, it is a difficult problem to recover enzymes from biological products and sludge. Magnetic separation technology can also be used here: making use of the difference in magnetic susceptibility between enzyme and sludge, it can be separated by high gradient magnetic separator. In addition, a certain intensity of magnetic field can promote the growth and reproduction of some microorganisms, so as to increase the reaction rate of microorganisms in sludge and speed up the treatment of sewage.
Which of the following plays a real role in the sewage treatment process of magnetic separation technology?
In order to improve the speed of sewage treatment, the retention aeration time in biochemical reaction tank was shortened