And cation exchange membrane only allow cationic through, does not allow anionic through.
而阳离子交换膜只允许阳离子透过，不允许阴离子透过。
The performance of a plate membrane bioreactor for treating high concentration of anionic surfactant (LAS) was investigated in laboratory scale by changing the content of LAS in influent.
通过向进水中投加不同浓度的阴离子表面活性剂（LAS），研究了一体式平板膜生物反应器对高浓度LAS的去除性能。
Preferably, a cationic PVA is adhered to a reverse osmosis membrane and then an anionic PVA is adhered thereto.
优选在反渗透膜上附着阳离子性PVA之后，附着阴离子性PVA。
Preferably, a cationic PVA is adhered to a reverse osmosis membrane and then an anionic PVA is adhered thereto.
优选在反渗透膜上附着阳离子性PVA之后，附着阴离子性PVA。
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