Water treatment system of automotive urea machine

The invention discloses a water treatment system of an automotive urea machine, and relates to the technical field of vehicle engineering water treatment. The system comprises a pretreatment device, a reverse osmosis treatment device and an electrodeionization treatment device which are sequentially connected with municipal water; the pretreatment device comprises a filter assembly used for filtering sediments, particles and microorganisms in raw water; pretreated water can serve as cooling water for cooling vehicles and cleaning water for cleaning the vehicles; the reverse osmosis treatment device comprises a reverse osmosis membrane assembly used for removing electrolyte ions in the water; water obtained after reverse osmosis treatment can serve as drinking water; the electrodeionization treatment device comprises an electrodeionization module used for removing organic matter, inorganic salt and heavy metal impurities in the water; water obtained after electrodeionization treatment can serve as ultrapure water for preparing an automotive urea solution. According to the water treatment system, tertiary treatment and utilization are performed on the municipal water, the water utilization rate can be increased, resources are saved, the production cost is saved, the using functions of products are increased, and therefore the functions of the products are more diverse.