摘要
以钠碱脱硫法产生的高浓度含盐废水为处理对象,采用混凝沉淀+强制氧化+化学沉淀+超滤+螯合树脂+电渗析浓缩+双极膜电渗析工艺流程进行再生,实现了含盐废水零排放和钠碱资源的循环利用。再生得到的氢氧化钠溶液浓度满足回用于脱硫塔的要求。在适宜的操作条件下,再生部分电耗1.34~1.43 kW·h/kg。
Taking the highly concentrated saline wastewater produced by sodium alkali desulfurization method as treatment object,the process of coagulation ＋ forced oxidation ＋ chemical precipitation ＋ ultrafiltration ＋ chelating resin ＋ electrodialysis concentration ＋ bipolar membrane electrodialysis has been used for the regeneration of highly concentrated saline wastewater,realizing zero discharge of high salinity wastewater and cyclic utilization of sodium alkali resource. The concentration of sodium hydroxide solution obtained from the regeneration could meet the requirements for its reuse for the desulfurization tower. Under suitable operating conditions,the regenerated electricity consumption is 1.34-1.43 kW·h/kg.
作者
吴颖
楼琼慧
郦和生
秦会敏
Wu Ying, Lou Qionghui, Li Hesheng, Qin Huimin(SINOPEC Beijing Research Institute of Chemical Industry ,Beijing 100013, Chin)
出处
《工业水处理》
CAS
CSCD
北大核心
2018年第3期86-88,99,共4页
Industrial Water Treatment
关键词
脱硫液
含盐废水
再生
零排放
desulfurized solution
saline wastewater
regeneration
zero discharge
