Mine water with high iron and manganese levels was studied from Jiukuang and Siwan mines. The water had high turbidity and dissolved oxygen, so aeration wasn't needed for treatment. Iron was removed by coagulation-sedimentation at a rate of 90%, while manganese removal was around 20%. Using manganese sand as a filter material with KMnO4 solution reduced iron and manganese levels to below 0.1 mg/L. A compound substance membrane on the sand's surface played a crucial role in manganese removal.