The filtering elements of WKL filter is sintered with low-pressure high polymer PE and PAC. It can get rid of the solution organic substance and part of microorgan-ism, pigment, bad small in water, but also can remove part of harmful metal ion, such as Zn, Fe,Cd, Hg and other harmful substance, such as chloricphenol and as. The filter not only can clean tap water and polluted water, but also is used to filter and sterilize wine, vinegar, edible oil, syrup, beer and so on.