Comparative analysis of equipment and process of medical purified water

In general, there are no more than three ways to make water for medical purified water equipment In addition to these three ways, all other ways of making water are derived from them Here are the three ways to make medical purified water equipment and their advantages and disadvantages: 1 The main method is to use ion exchange resin Its advantages lie in less initial investment and less land occupation The disadvantage is that it needs long-term ion regeneration, which not only consumes a lot of acid and alkali, but also damages the environment 2 The second method is mainly to use reverse osmosis for pretreatment and then to equip with ion exchange equipment, which is characterized by higher investment than the way of using ion exchange resin, longer cycle of ion regeneration compared with the former one, and much less acid and alkali consumption than the way of simply using ion resin The damage to the environment is much less 3 The third method is to use reverse osmosis as pretreatment and then add electrodeionization device, that is, EDI device This is an economic and environmental protection process for purified water production at present Purified water can be produced continuously without acid-base regeneration, without damaging the environment The disadvantage is that the initial investment is too expensive The water production standard of medical purified water equipment has always been very high and strict, which needs to reach 15 megaohm, meeting the requirements of medical water In order to prevent the water from being polluted, all kinds of checkpoints have been set up It is normal to set up ultraviolet sterilization device at the final water consumption point Its sterilization rate can be close to ensure the quality of the effluent water.