Principles of Microbial Laboratory Wastewater Treatment Equipment

The principle of the laboratory wastewater treatment system is to treat wastewater through physical, chemical, and biological methods to remove pollutants from the water. Specifically, the laboratory wastewater treatment system consists of three stages: pretreatment, biological treatment, and post-treatment. The pretreatment stage mainly includes processes such as water adjustment, grating filtration, and sedimentation, which can remove large particles from the water and reduce damage to subsequent treatment equipment.

The biological treatment stage involves the process of converting organic matter in water into inorganic salts and water through biological decomposition.

Biological treatment is generally divided into various methods such as contact oxidation, activated sludge process, and biofilm process, with the activated sludge process being widely applied. The activated sludge process involves mixing microorganisms with organic wastewater, where the metabolic actions of the microorganisms decompose organic matter into inorganic substances.

The post-treatment stage is designed to further enhance water quality by removing residual organic matter and nutrients such as nitrogen and phosphorus. Post-treatment typically involves methods like deep filtration, activated carbon adsorption, and ultraviolet disinfection.

The laboratory wastewater treatment system's operational workflow consists of three stages: pretreatment, biological treatment, and post-treatment.