Process system for staged treatment of coal mine underground source water

The invention relates to the field of mine water treatment, in particular to a process system for staged treatment of underground coal mine source water, which comprises a large-particle impurity treatment part, a fine-particle impurity and suspended colloid treatment part and a coal slime treatment part, the large-particle impurity treatment part is used for removing large-particle impurities of which the particle sizes are greater than 0.1 mm in mine water; the fine particle impurity and suspended matter colloid treatment part is used for efficiently removing impurities such as fine particle impurities and colloidal suspended matters which are difficult to precipitate and have the particle size of more than 5 microns in the water body; and the coal slime treatment part is used for further concentrating coal slime pollutants generated in the water treatment process and then carrying out dehydration treatment. The system can realize a process treatment method for coal mine underground source water treatment w