Water treatment engineering involves purifying, softening, disinfecting, and removing iron and manganese from water that does not meet the requirements. A project for removing heavy metal ions and filtration. Simply put, "water treatment engineering" is a project that uses physical and chemical means to remove substances from water that are not needed for production and daily life. It is a project that involves water sedimentation, filtration, coagulation, flocculation, as well as corrosion inhibition and scale prevention and other water quality conditioning for specific uses.

The water treatment industry is a key area that supports environmental protection and resource recycling. It is of great significance for ensuring water resource security, promoting ecological civilization construction, supporting economic development, safeguarding public health, and driving technological innovation and industrial upgrading.