How to use wastewater treatment defoamer correctly?
Determine the appropriate amount of defoamer to add
If the possibility of foaming during wastewater treatment can be predicted, defoamers can be added well in advance of foaming. This prevents foaming and reduces the difficulty and cost of subsequent treatment. For example, before the wastewater enters the treatment facility, or before adding certain chemicals that are prone to foaming, an appropriate amount of defoamer can be added.
If you fail to add an antifoam agent in advance, you should add an antifoam agent for treatment as soon as you notice foam generation. In the early stage of foam generation, the number and volume of foam is relatively small, at this time to add defoaming agent can be more effective in controlling the development of foam. Avoid adding foam control agent after the foam accumulates in large quantities, because at this time it may require a larger dosage to achieve a good antifoaming effect.
The correct way to add defoamer
1. Add antifoaming agent evenly:
In order to ensure that the defoamer can give full play to its role, the defoamer should be added to the wastewater evenly.
It can be added by dropping, spraying or stirring, so that the antifoam agent is fully mixed with the wastewater.
If the defoaming agent is added by dropping, the speed of dropping should be controlled to avoid the local concentration is too high.
2. Add defoamer in batches:
In some cases, adding a large amount of foam control agent at one time may lead to poor results or other problems.
Consider adding antifoam agent in batches and adjusting the amount of additive according to the foam generation and treatment effect at the right time.
For example, regular observation of foam in the treatment process, when the foam reappears, add a certain amount of defoamer.
3. Antifoam agent and other treatment agents used in synergy:
In wastewater treatment, defoamer can be used synergistically with other treatment agents to improve the treatment effect.
For example, when antifoam agent is used in conjunction with flocculant and oxidizer, attention should be paid to the order of addition and interaction to avoid affecting the performance of each.
When used synergistically, it needs to be tested and adjusted according to the specific situation to determine the best defoamer addition program.
In short, in the use of wastewater treatment defoamer, need to take into account the characteristics of wastewater, treatment process, adding time and method and other factors, through the small test and practical application of continuous adjustment and optimization, in order to achieve the best defoaming effect. At the same time, attention should be paid to the use of defoamer safety and environmental protection requirements, to avoid adverse effects on the environment and human body.
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