高通量短流程陶瓷膜工艺运行稳定性研究

Research on operational stability of high throughput short flow process with ceramic membrane

采用规模为60 m^(3)/d的微絮凝-平板陶瓷膜短流程净水工艺,模拟工程运行参数,对实时的长江原水进行高通量的运行测试和效果研究。结果表明,该工艺在100 LHM的高通量工况下可稳定运行,维护性清洗周期约5~7 d,跨膜压差终点控制在35 kPa以内。短流程工艺将出水浑浊度控制在0.05 NTU以下,对COD_(Mn)、铁离子、铝离子去除率分别为49.9%、94.8%、89.8%,平均产水率为94.6%~97.5%,出水性能稳定,且具备经济性。陶瓷膜耦合臭氧工艺可适应高浑浊度的原水切换工况。

Adopting a 60m^(3)/d micro-flocculation flat ceramic membrane short process water purification process,simulating engineering operating parameters,conducting high flux operation testing and effectiveness research on the raw water of the Yangtze river.The results show that the process can operate stably under high throughput conditions of 100LHM,with maintenance cleaning cycle of 5~7days and the TMP endpoint controlled within 35kPa.The short process controls the turbidity of the effluent below 0.05NTU,and the removal rates of COD_(Mn),iron ions,and aluminum ions are 49.9%,94.8%,and 89.8%,respectively.The average water production rate is 94.6%~97.5%,indicating stable effluent performance.The coupled ozone process can adapt to various raw water switching conditions.