Zero-discharge treatment method for salt-containing sewage

The invention relates to the technical field of sewage treatment, and discloses a zero-discharge treatment method for salt-containing sewage. According to the method provided by the invention, the salt-containing sewage is introduced into the circulating water system to be concentrated, hardness removal, silicon removal, COD removal, salt separation and the like are combined to form a complete sewage zero-discharge treatment process, and the method has the advantages of low cost, high operation stability, long operation period and the like, and is suitable for industrial production. According to the method, the fresh water consumption and the sewage discharge amount of the circulating water system are reduced at the same time. Moreover, the purity of the salt recovered by the method provided by the invention can meet the requirement of industrial salt, and the salt can be directly recycled, so that the resource utilization rate is increased, and industrial sustainable development is facilitated. 本发明涉及污水处理技术领域