The reason why the defoaming effect of wastewater defoamer becomes worse, it turns out to be this!
High concentration organic wastewater contains difficult to degrade organic solvents and dyes, and its chromaticity, turbidity, COD content are relatively high, which is easy to produce foam when treating, resulting in excessive system load during biochemical treatment, and the discharge standard cannot meet the requirements. But sometimes adding defoamer defoaming effect is not good. So what are the reasons that lead to the poor defoaming effect of wastewater?
The reasons for the weakened defoaming effect of defoamer may be as follows:
1, Defoamer use method error:
Different forms of defoamer use when the placement time, placement location are a little different. Like solid defoamer, placed at the inlet of the wastewater is better, defoamer in the impact of water flow can be faster and uniformly dissolved in the wastewater pool, which can be more conducive to the spread of defoamer diffusion. Because the cause of different systems of foaming are different, so add the amount sometimes can not be said to add a direct defoaming in place. It is recommended that a small amount can be added to the wastewater several times. If conditions allow, do the pre-use experiment will be better!
2, The acidity and alkalinity of the foaming system is too high or too low:
General f wastewater treatment defoamer are resistant to acid and alkali, but when the solution acid and alkali value of the foaming system is too high or too low, it will affect the decomposition of the active ingredients in the f wastewater defoamer. Like containing silicone oil defoamer in the strong acidic and alkaline environment is not easy to decompose, resulting in f wastewater defoamer defoaming and foam inhibition performance will be greatly reduced. Therefore, it is recommended that before the defoamer is added, the pH of the system can be neutralized, so that it reaches the normal range in the better or choose a wastewater defoamer that can resist strong acids and bases.
3, Defoamer itself problems:
Before using the defoamer is necessary to check whether the defoamer is in the shelf life, once the shelf life is over do not use; there is a dilution of the defoamer is recommended to be used within a week as much as possible, diluted defoamer stored for too long may produce precipitation, or stratification. But in fact, these are not the main, mainly wastewater treatment of defoaming and anti-foaming effect will be affected, and may even become a new foaming factor. If you are not careful to dilute too much to be stored for a long time, you can add some stabilizer in it.
Contact us for high quality defoamer samples!
