System for recycling precipitates by removing sulfate radicals in wastewater and process of system

• Main Authors: ZHOU ZHEN, JIANG LUMAN, TIAN XIAOCE, WU WEI, YANG YANG, RUAN DANIAN, HUANG SHUTING, DOU WEIXIAO
• Format: Patent
• Language: Chinese; English
• Published: 13.06.2017
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention relates to a system for recycling precipitates by removing sulfate radicals in wastewater and a process of the system. Hydrotalcite-like compounds are taken as a coagulant to be subjected to resource utilization in the system, the system comprises a pre-settling tank, a coagulation reaction tank, a settling tank and a neutralizing tank, a pre-settling dosing tank, a coagulation dosing tank, a coagulation aid dosing tank and a neutralizing dosing tank are respectively arranged in the pre-settling tank, the coagulation reaction tank, the settling tank and the neutralizing tank, and a coagulation dosing tank is filled with the hydrotalcite-like compounds; or the hydrotalcite-like compounds are taken as an adsorbent to be subjected to resource utilization in the system, the system comprises an adsorption reaction tank, the settling tank and the neutralizing tank, an adsorption dosing tank, the coagulation aid dosing tank and the neutralizing dosing tank are respectively arranged in the adsorption re