The detergents in biological laboratory wastewater are mainly used in the process of experiments and the cleaning of laboratoryware. These detergents contain a variety of chemical components, such as surfactants, additives, salts, etc., which are harmful to the environment and organisms. Therefore, how to effectively remove detergent from biological laboratory wastewater has become an important issue.
A common way to remove detergents is to use coagulants. The coagulant can react with the detergent to precipitate the detergent from the wastewater, so as to achieve the purpose of removal. Commonly used coagulants include aluminum salts, iron salts, polymers, etc. Experiments have shown that aluminum salts have a good effect on removing detergents, while polymers can remove many different types of detergents.
In addition, biological treatment methods are also an effective means of removing detergents. Microorganisms can convert the organic matter in the wastewater into harmless substances through metabolism, so as to achieve the purpose of purification. Biological treatment methods have the advantages of low cost, good effect and no secondary pollution, so they have been widely used in wastewater treatment in biological laboratories.
In addition to this, activated carbon adsorption is also a commonly used method to remove detergents. Activated carbon has a large specific surface area and adsorption capacity, which can effectively adsorb organic matter in wastewater, including detergents. The activated carbon adsorption method has a good effect on the removal of small molecular weight and low concentration of organic matter, so it has certain advantages in the treatment of low-concentration wastewater.
In summary, removing detergents from biological laboratory wastewater requires a combination of methods. In practical application, the appropriate method should be selected according to the water quality, treatment requirements and actual situation of wastewater to achieve the best treatment effect. At the same time, it is also very important to strengthen the management and control of laboratories to reduce the generation and discharge of wastewater.