Fracturing flow-back fluid resourceful treatment system

The utility model discloses a fracturing flow-back fluid resourceful treatment system which comprises a regulating reservoir, a pretreatment device, a reverse osmosis device, a DTRO (Disk Tubular Reverse Osmosis) device, a first nanofiltration device, a second nanofiltration device, an evaporative crystallization device and a carnallite treatment device. The device is short in treatment flow, low in investment, good in economical efficiency and stable in operation; the water resource recovery rate exceeds 95%; meanwhile, the quality of the obtained sodium chloride crystal salt is superior to the secondary standard of industrial sodium chloride dry salt, the sodium chloride crystal salt can be directly used as a downstream raw material, the economic value is high, and the recycling rate of the crystal salt exceeds 85%. 本实用新型公开了一种压裂返排液资源化处理系统，其包括调节池、预处理装置、反渗透装置、DTRO碟管式反渗透装置、第一纳滤装置、第二纳滤装置、蒸发结晶装置和杂盐处理装置。本实用新型处理流程短、投资少、经济性好、运行稳定；水资源回收率超过95％；同时得到的氯化钠结晶盐品质优于工业氯化钠干盐二级标准，可直接作为下游原料进行使用，经济价值高，结晶盐资源化率超过85％。