摘要
固体氰化钠生产过程中产生的蒸发冷凝水是一种含有有机物的,高氰根、高氨氮废水。本文采用高效吹脱+双氧水氧化+生化处理的方法,分别对废水中的氨氮、氰根、COD的处理进行了研究。主要考察了吹脱时间、温度、p H值对氨氮去除效果的影响;双氧水添加量、反应时间对氰根去除效果的影响。结果表明,在吹脱时间为60min,温度为40℃,p H值为11.0时,氨氮去除率为94.86%;在双氧水添加量为双氧水/氰根=1.5/1.0(物质的量比),反应60min时,氰根去除率为99.29%。预处理后的废水达到生化处理进水要求,经过生化处理后,出水水质可达到国家二级排放标准。
Solid sodium cyanide,evaporation condensation water is a kind of containing organic matter,high cyanide,high ammonia nitrogen wastewater. This paper adopts high efficiency to remove ＋ hydrogen peroxide oxidation ＋ biochemical treatment method,respectively,to ammonia nitrogen in wastewater,cyanide,the processing of COD is studied. Mainly examines the blowing time,temperature and p H value on the influence of ammonia nitrogen removal efficiency; Hydrogen peroxide dosage,reaction time on cyanide removal effect; Results show that the for 60 min to remove the reaction time,temperature of 40 ℃,the p H value is 11. 0,ammonia nitrogen removal rate is 94. 86%; In hydrogen peroxide dosage for hydrogen peroxide/cyanide =1. 5 /1. 0（ mole ratio）,reaction process 60 min,cyanide removal rate was 99. 29%; After the pretreatment of wastewater can meet the demands of biochemical treatment of the water,After biochemical treatment,the effluent water quality can reach,national secondary emission standards.
作者
杨景叶
安彩妹
袁志文
杨海亮
Yang Jingye An Caimei Yuan Zhiwen Yang Hailiang(Hebei Chengxin Co. ,Ltd. , Shijiazhuang 051130,China)
出处
《山东化工》
CAS
2016年第19期131-132,共2页
Shandong Chemical Industry
关键词
高氨氮
高氰根
气提吹脱
双氧水
生化处理
high ammonia nitrogen
high cyanide
gas stripping
hydrogen peroxide
biochemical treatment
