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|1. (WO2018082343) PROCESS FOR USING ORGANIC HIGH-SALT WASTEWATER TO PREPARE INDUSTRIAL REFINED SALT|
|Applicants:||NANJING GREEN-WATER ENVIRONMENT ENGINEERING LIMITED BY SHARE LTD
|Title:||PROCESS FOR USING ORGANIC HIGH-SALT WASTEWATER TO PREPARE INDUSTRIAL REFINED SALT|
Provided is a process for using organic high-salt wastewater to prepare industrial refined salt; organic high-salt wastewater is pretreated for oil removal, then fed into a secondary evaporative crystallizer of a multi-effect evaporative crystallization system for multi-effect evaporation; after multi-effect evaporation and water removal, hazardous waste salt particles are obtained; the hazardous waste salt particles are fed into a multi-stage rotary kiln and thermal desorption is performed; organic substances in the hazardous waste salt are removed and the obtained solid particles are dissolved and impurities are removed; carbon slag, phosphorus, ammonia nitrogen, and calcium and magnesium ions are removed from the solid particles; the obtained saline solution is again fed into a primary evaporative crystallizer of the multi-effect evaporative crystallization system; evaporative crystallization is performed to obtain an industrial refined salt.