In the process of sewage treatment, the use of defoamer is of great significance to improve treatment efficiency and reduce equipment operating costs. However, the improper use of defoamers can cause harm to the environment and human health. This article will start from the perspective of the safe use of defoamers, and how to avoid the harm they cause to the environment and human health.
1. The role and classification of sewage treatment defoamers.
Sewage treatment defoamer is a surfactant, the main role is to reduce the tension on the surface of the liquid, so that the foam bursts, thereby eliminating the foam. According to the chemical composition, defoamers can be divided into silicones, polyethers, fatty alcohols, etc. Different types of defoamers are also used differently in wastewater treatment.
Second, the safe use of defoamers.
1.Choose the right defoamer.
When selecting defoamer, the appropriate defoamer should be selected according to the specific conditions of the sewage treatment plant, such as water quality, pH value, temperature, etc. In addition, the compatibility, stability and environmental performance of the defoamer should be considered.
2.Control the concentration used.
The concentration of defoamer has an important impact on the effectiveness and safety of wastewater treatment. In general, the concentration of defoamer should be controlled at 01%~1%。Excessive concentration may lead to a decrease in the effectiveness of sewage treatment, or even ***
3.Regularly monitor the defoamer concentration.
During the wastewater treatment process, the defoamer concentration should be monitored regularly to ensure that it is within a safe range. Once the concentration is found to be exceeded, the dosage should be adjusted in time.
4.Follow safe operating procedures.
When using defoamers, operators should follow safe operating procedures and avoid contact with sensitive parts such as ** and eyes. In case of accidental contact, rinse immediately with clean water and seek medical attention**.
3. The impact of defoamers on the environment and human health.
1.Impact on the environment.
Excessive use of defoamers may lead to eutrophication of water bodies and affect the growth of aquatic organisms. In addition, some defoamers have certain biological toxicity and may have a negative impact on the ecological environment.
2.Effects on human health.
Long-term exposure to defoamers, especially those containing harmful substances, can be harmful to human health. For example, silicone oil in silicone defoamers has been proven to be toxic to human respiratory tract, liver and other organs.
IV. Conclusions. Sewage treatment defoamers play an important role in improving treatment efficiency and reducing operating costs. However, improper use of defoamers can be harmful to the environment and human health. Therefore, when using defoamers, safety operating procedures should be followed, concentrations should be controlled, and defoamer concentrations should be monitored regularly. In addition, the research and development of new environmentally friendly and low-toxicity defoamers is also a trend of future development.