Water treatment equipment and technology more mature of arsenic removal project at present, there are mainly three kinds of Technology: membrane (RO) technology and ion exchange technology, the electrodialysis technology.

From the point of view of the actual operation of the project, membrane technology widespread high operating costs, not suitable for rural drinking water safety project; electrodialysis technology from the theory about operating cost is not high, but actual engineering in different equipment running costs also vary greatly; ion exchange technology in practical engineering due to more frequent replacement of the medium, management is more complicated, the operation cost as medium source and the replacement frequency and.