Abstract:

A pilot simulated test on the demonstration project of biological powdered activated carbon-ultrafiltation(PAF-UF) in a Zhejiang water plant has been accomplished. The change rules of pollutant removing efficiency and membrane pressure difference under two kinds of aeration conditions:continuous aeration and aeration only while backwashing, have been investigated. It is found from the research that after the process has run steadily, under the two kinds of aeration conditions, the differences of the removing rates of ammonia nitrogen and COD_Mn are not big, but under the condition without continuous aeration, the removing rates of UV₂₅₄ and soluble organic matter are decreased, and membrane pressure difference grows faster.

Key words: micro-polluted raw water, powdered activated carbon, ultrafiltration

摘要：

对浙江某水厂生物粉末活性炭-超滤(PAC-UF)示范工程进行中试模拟试验, 考察了在连续曝气和仅反冲洗时曝气2种不同曝气方式下污染物的去除效果和膜压差的变化规律。研究发现, 工艺运行稳定后, 2种曝气方式下氨氮、COD_Mn的去除率差距不大, 而取消连续曝气条件下UV₂₅₄和溶解性有机物的去除率降低, 膜压差增长较快。

关键词: 微污染原水, 粉末活性炭, 超滤

CLC Number: 

• X703.1