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超声吹脱-次氯酸钠氧化工艺处理酮连氮法制肼废水
引用本文:方鹏,吴云海,范翼昂,黄永明,朱桂生,郭如涛.超声吹脱-次氯酸钠氧化工艺处理酮连氮法制肼废水[J].化工环保,2017,37(2):194-199.
作者姓名:方鹏  吴云海  范翼昂  黄永明  朱桂生  郭如涛
作者单位:1. 河海大学 环境学院,江苏 南京 210098;; 2. 江苏索普(集团)有限公司,江苏 镇江 212006
基金项目:江苏索普化工股份有限公司项目(20158027216)
摘    要:采用超声吹脱-次氯酸钠氧化工艺处理酮连氮法制肼废水,优化了工艺条件,并进行了尾水处理与盐分回收。实验结果表明:在超声声能密度0.08 W/mL、吹脱气量2 000 L/h、次氯酸钠溶液(有效氯10%)投加量15mL/L、反应时间20 min的最优条件下,COD、氨氮和肼类物质去除率分别达到96.97%、99.02%和96.60%,处理成本约为30元/t(以废水计);尾水经蒸馏处理后可满足GB 8978—1996《污水综合排放标准》的一级B标准,回收NaCl纯度为98.92%,达到GB/T 5462—2015《工业盐》的精制工业盐一级标准。

关 键 词:酮联氮  水合肼  超声吹脱  次氯酸钠  盐分回收  
收稿时间:2016-07-19

Treatment of wastewater from hydrazine hydrate preparation by ketazine method using ultrasonic stripping-sodium hypochlorite oxidation process
Fang Peng,Wu Yunhai,Fan Yiang,Huang Yongming,Zhu Guisheng,Guo Rutao.Treatment of wastewater from hydrazine hydrate preparation by ketazine method using ultrasonic stripping-sodium hypochlorite oxidation process[J].Environmental Protection of Chemical Industry,2017,37(2):194-199.
Authors:Fang Peng  Wu Yunhai  Fan Yiang  Huang Yongming  Zhu Guisheng  Guo Rutao
Institution:1. College of Environment,Hohai University,Nanjing Jiangsu 210098,China;2. Jiangsu Sopo(Group)Co. Ltd.,Zhenjiang Jiangsu 212006,China
Abstract:The wastewater from hydrazine hydrate preparation by ketazine method was treated using ultrasonic stripping-sodium hypochlorite oxidation process. The process parameters were optimized,and the tail water treatment and NaCl recovery were carried out. The experimental results showed that:Under the optimum conditions of ultrasonic sound energy density 0.08 W/mL,stripping gas amount 2 000 L/h,NaClO solution(effective chlorine 10%)amount 15 mL/L and reaction time 20 min,the removal rate of COD,ammonia nitrogen and hydrazine group substances were 96.97%,99.02% and 96.60% respectively,the treatment costs were about 30 yuan/t(wastewater);The tail water after distillation met the first level B standards of GB 8978-1996. The purity of the recovered NaCl was 98.92%,which met the first level standard of GB/T 5462-2015 for refined industrial salt.
Keywords:ketazine  hydrazine hydrate  ultrasonic stripping  sodium hypochlorite  salt recovery  
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