脱氨膜工艺用于高氨氮沉钒废水处理升级改造  

Application of Deamination Membrane Process in Upgrading Project for Treating High Ammonia of Vanadium Precipitating Wastewater

作　　者：黄海波 HUANG Hai-bo(Shanghai Jingyu Environmental Engineering Co.Ltd.,Shanghai 200439,China)

机构地区：[1]上海晶宇环境工程股份有限公司,上海200439

出　　处：《中国给水排水》2023年第6期98-102,共5页China Water & Wastewater

摘　　要：采用脱氨膜工艺对四川某钒钛企业高氨氮沉钒废水脱氨工艺进行升级改造。为期半年的运行结果表明,该工艺运行状况良好,氨氮从100~400 mg/L降到10 mg/L以下,完全满足氨氮排放要求;该工艺脱氨率较稳定,单级平均去除率约为86%,平均总去除率约98%,并且进水氨氮浓度不会明显影响其对氨氮的脱除率;其产生的副产品(硫酸铵)浓度一般为10%~14%,含有0.5%~1%的NaCl杂质,要想获得纯度98%以上的硫酸铵固体,需要进一步浓缩结晶。在本次改造中脱氨膜装置总占地面积约30 m^(2),总投资约210万元,其中脱氨膜组件为151万元,占71.9%。废水处理日常费用平均为3.06元/m^(3)。The deamination process for treating high ammonia of vanadium precipitating wastewater was upgraded by deamination membrane process in a vanadium titanium factory of Sichuan Province.The operation data of half a year demonstrated that the process worked well and ammonia concentration was reduced from 100-400 mg/L to less than 10 mg/L,which fully met the ammonia nitrogen discharge requirements.The ammonia removal rate of the process was relatively stable with average removal rate of 86%in its single stage and average total removal rate of 98%,and the influent ammonia nitrogen concentration did not affect its ammonia removal efficiency obviously.The by-product ammonium sulfate concentration was generally 10%-14%,containing 0.5%-1% of NaCl impurity,thus it is needed to be further concentrated and crystallized in order to obtain more than 98% of pure ammonium sulfate solid.In this upgrading project,the deamination membrane device covers a total area of about 30 m^(2),and the total investment is about 2.1 million yuan,of which the deamination membrane component is 1.51 million yuan,accounting for 71.9%,and the average daily treatment cost is 3.06 yuan/m^(3).

关 键 词：沉钒废水 脱氨膜 氨氮 

分 类 号：TU992[建筑科学—市政工程]