磷酸铁废水资源回收工程实例  

An example of iron phosphate wastewater resource recovery project

作　　者：邱晖 汪勇 潘旭东[1] 丁国良 李俊 胥鸣 程志军 QIU Hui;WANG Yong;PAN Xudong;DING Guoliang;LI Jun;XU Ming;CHENG Zhijun(Hangzhou Tianchuang Environmental Technology Co.,Ltd.,Hangzhou 311121,China;East China University of Technology,Nanchang 330013,China)

机构地区：[1]杭州天创环境科技股份有限公司,杭州311121 [2]东华理工大学,南昌330013

出　　处：《工业用水与废水》2024年第5期72-76,共5页Industrial Water & Wastewater

摘　　要：针对某新能源企业磷酸铁废水杂质离子多、氨氮和总磷浓度高等特点,设计采用氨水沉淀除杂-膜分离-MVR蒸发分盐结晶组合工艺进行资源化回收,回收回用水和废水中的硫酸铵及磷酸一铵。运行结果表明,预处理过程总铁去除率大于99.5%,Mn^(2+)去除率大于99%,膜浓水的硫酸铵质量浓度大于160000 mg/L,副产品硫酸铵质量符合GB/T 535—2020《肥料级硫酸铵》中Ⅰ型指标要求,磷酸一铵质量符合GB/T 10205—2009《磷酸一铵、磷酸二铵》中粉末磷酸一铵传统法一等品指标要求,每吨废水资源化回收处理净收益约为9.8元。According to the characteristics of the iron phosphate wastewater from a new energy enterprise such as high impurity ions content,high ammonia nitrogen and total phosphorus concentrations and so on,a combined process of ammonia precipitation impurity removal-membrane separation-MVR evaporation salt crystallization was adopted for resource recovery,ammonium sulfate and monoammonium phosphate in reclaimed water and wastewater were recycled.The operation results indicated that,through pretreatment,the removal rates of total ions and Mn^(2+)were above 99.5%and 99%respectively,the mass concentration of ammonium sulfate in the membrane concentrated water was above 160000 mg/L,the quality of the byproduct ammonium sulfate satisfied the typeⅠindex requirements of GB/T 535—2020 Fertilizer grade ammonium sulphate,the quality of monoammonium phosphate met the index requirements of traditional top quality goods of powder monoammonium phosphate in GB/T 10205—2009 Monoammonium phosphate and diammonium phosphate,the net income of ton wastewater recycling treatment was about 9.8 yuan.

关 键 词：磷酸铁废水 资源化 预处理 膜浓缩 MVR蒸发 硫酸铵 磷酸一铵 

分 类 号：X703.1[环境科学与工程—环境工程]