Low-cost treatment method for wastewater containing ammonia sulfate, high salt content and high organic matter content

The invention belongs to the technical field of sewage treatment, and discloses a low-cost treatment method of ammonia-sulfate-containing high-salt-content high-organic-matter wastewater, which comprises the following steps: step 1, pretreating ammonia-sulfate-containing high-salt-content high-organic-matter wastewater to obtain a water phase A; step 2, sequentially adding lime and polyferric chloride into the water phase A, stirring, and then filtering to obtain a water phase B; step 3, sequentially carrying out deamination treatment and nanofiltration treatment on the water phase B to obtain a water phase C; on the basis that lime and sulfate radicals are crystallized at normal temperature to generate dihydrate gypsum, ammonium radicals in sewage are converted into free ammonia to obtain ammonia water, meanwhile, COD is greatly reduced, and the technological method for treating sodium sulfate and ammonium sulfate high-salt-content high-organic-matter-content wastewater with low energy consumption and low co