▎ 摘　　要

NOVELTY - A high salinity and high hardness ground water materialization removing hard method comprises using pre-precipitation adjusting tank, flocculation sedimentation tank, high density sedimentation tank, no valve filter tank, reverse osmosis system, and electrodialysis system process for removing hard raw water. An ultra-filtration system is arranged between non-valve filter pool and reverse osmosis system. The ultra-filtration system is provided with modified ultra-filtration membrane. The pH is not less than11.5 of operation environment, intercepting from non-valve filter tank water to form calcium carbonate, magnesium carbonate, calcium hydroxide, magnesium hydroxide and fine precipitate particles to ensure effluent ultrafiltration system. The concentration of calcium ion flowing into water body of reverse osmosis system is not greater than10 mg/L. USE - The method is used for high salinity and high hardness ground water materialization removal.