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1. (WO2018082343) PROCESS FOR USING ORGANIC HIGH-SALT WASTEWATER TO PREPARE INDUSTRIAL REFINED SALT

Pub. No.:    WO/2018/082343    International Application No.:    PCT/CN2017/093296
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Wed Jul 19 01:59:59 CEST 2017
IPC: C02F 1/04
B01D 1/26
C01D 3/06
C01D 3/14
Applicants: NANJING GREEN-WATER ENVIRONMENT ENGINEERING LIMITED BY SHARE LTD
南京格洛特环境工程股份有限公司
Inventors: HAN, Zhengchang
韩正昌
HAN, Siyu
韩思宇
SUN, Zaichen
孙在臣
ZHANG, Liang
张良
HAN, Feng
韩峰
MA, Junjun
马军军
GAO, Yajuan
高亚娟
TAO, Zhihui
陶志慧
Title: PROCESS FOR USING ORGANIC HIGH-SALT WASTEWATER TO PREPARE INDUSTRIAL REFINED SALT
Abstract:
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.