Treatment method of gold smelting plant high-salt wastewater hard to treat and containing ammonia and nitrogen

The invention discloses a treatment method of gold smelting plant high-salt wastewater hard to biodegrade and containing ammonia and nitrogen. According to the method, technological procedures such as desalting pretreatment, two-stage separated evaporation and biochemical treatment are mainly adopted. By adopting mature and reliable technologies, the technological process is safe, efficient, free of secondary pollution, capable of recycling valuable materials and comprehensively utilizing resources, and controllable in cost; the quality of treated water reaches the first-class emission standard and the water recycle standard. By combining a plurality of treatment technologies, the treatment method disclosed by the invention has the advantages of achieving a remarkable benefit increment effect, breaking through the technical bottlenecks of the original treatment process and the existing treatment method, effectively solving the problem of hard degradation of high-salt complex wastewater and creating good environmental protection and economic benefits.