Saline-alkali land improvement leaching water treatment method and mobile leaching water treatment equipment

The invention discloses a saline-alkali land improvement leaching water treatment method and mobile leaching water treatment equipment. A mobile device is internally equipped with a raw water liftingpump, a primary medium filter unit, a secondary medium filter unit, an ultrafiltration unit, a cartridge filter unit, a high-pressure pump and a first-stage reverse osmosis desalination unit. A concentrated water outlet of the first-stage reverse osmosis desalination unit is connected to a second-stage reverse osmosis desalination unit, and the reused water outlets of the first-stage reverse osmosis desalination unit and the second-stage reverse osmosis desalination unit are both connected to a reused water pipeline. And a cartridge filter, a cleaning water pump and a cleaning water tank are connected between the water inlet and reused water outlet of the first-stage reverse osmosis desalination unit. Medium filtration is employed to remove suspended matters and large particle colloids. Ultrafiltration is utilized