Testing method for performance of defoaming agents in sewage treatment
Sewage treatment defoaming agent is a highly efficient defoaming agent refined using special technology. Its main features are: alkali and acid resistance, fast defoaming speed, long foam suppression time, high efficiency, non-toxic, non-corrosive, environmentally friendly and practical. Then during use, its performance detection methods mainly perform as follows:
1. Changes in foam volume can be directly reflected according to changes in transmitted light intensity. This method is that when light with a certain intensity passes through the foam in a certain area, the intensity of the transmitted light will be greatly reduced. From this, the change in the amount of foam in the defoamer can be seen, thereby comparing the performance of the defoamer and having the ability to timely characteristics of sex and continuity.
2. Measure the foam content according to the conductivity. This method is when the solution contains conductive ions, the liquid in the foam system is conductive but the gas is not. Through the content of the foam, the performance of the defoamer is compared. It has the characteristics of fast speed, timely data collection and accurate measurement. .
3.Flow display comparison method. The task of the flow display is to visualize the movement process of the liquid, compare the bubble content and study the changes in the number of bubbles in the foam, so as to compare the advantages and disadvantages of different defoaming agents. However, this method has certain limitations.
The above three methods are commonly used methods to test the performance of defoaming agents in sewage treatment. Through the monitoring of these methods, the fittest will survive and excellent defoaming will be achieved, thus better serving the application and development of various industries!
