摘要
为解决当前传统RO膜处理高浓氨氮废水的产水指标难以综合利用,造成环保压力大,同时高氨氮废水对生化的菌种有毒害且对管道及设备有腐蚀作用等难点,通过对原水组分分析、渗透膜结构的筛选及膜通量、pH值、电导率等因子对渗透膜截留效果的实验研究,验证了STRO膜与传统RO膜串联处理方法的可行性,最终产水COD≤400 mg/L、NH3-N≤30 mg/L、TN≤40 mg/L、TP≤4 mg/L等指标均符合回用和生化要求。最佳实验条件是STRO膜进水pH值为5.5,通量为18 L/(m^(2)·h),回收率90%;RO膜通量为25 L/(m^(2)·h),回收率90%,实现了废水减排增效和清洁生产。
In order to solve the current difficulties,it is difficult to realize that the water production index of high concentrated ammonia nitrogen wastewater is comprehensively utilized,which causes great environmental protection pressure.At the same time,the high ammonia nitrogen wastewater is toxic to biochemical bacteria and corrosive on pipelines and equipment,through the analysis of raw water components,the screening of permeable membrane structure,and the experimental study on the effect of membrane flux,pH value,conductivity and other factors on the permeable membrane,the feasibility of the series treatment of STRO membrane and traditional RO membrane was verified.COD of the final produced water≤400 mg/L,NH 3-N≤30 mg/L,TN≤40 mg/L,TP≤4 mg/L and other indicators meet the requirements of reuse and biochemistry.The optimum experimental conditions were as follows:the influent pH value of STRO film was 5.5,the flux was 18 L/(m^(2)·h),and the recovery rate was 90%.The RO membrane flux was 25 L/(m^(2)·h)and the recovery rate was 90%.Waste water emission reduction,efficiency improvement and cleaner production have been achieved.
作者
王瑞宝
WANG Ruibao(Hubei Taisheng Chemical Co.,Ltd.,Yichang 443007,China)
出处
《山东化工》
CAS
2024年第19期252-257,261,共7页
Shandong Chemical Industry
关键词
综合利用
STRO膜
膜通量
多级串联
comprehensive utilization
STRO membrane
membrane flux
multistage series
