Inorganic wastewater discharged from semiconductor production processes contains many harmful substances such as hydrofluoric acid. These are rendered harmless through processes such as pH control and coagulation and sedimentation before being released into the environment. Proper treatment requires a water quality meter that not only can measure accurately, but is also durable enough to withstand damage from hydrofluoric acid and other substances, and can also handle the buildup of scale and dirt. In recent years, water quality meters have also become essential for reducing the amount of chemicals needed for treatment.
Hydrofluoric acid treatment has become increasingly important in recent years among inorganic wastewater treatment methods used in semiconductor factories. In this process, a large amount of calcium-based chemicals is injected as a preparatory fixation, which may result in the use of more chemicals than necessary. HORIBA offers water quality meters that optimize the amount of chemical injection according to the wastewater treatment status, and offers suggestions for reducing running costs and environmental impact.
