| 摘要 |
A method for preparing an improved filter medium of enhanced electrokinetic capture potential for contaminated liquids having suspended therein electro-negative particles of about 0.1 to 0.7 micron diameter. The method comprises forming a filter medium from a dispersion of negatively charged particulate material for filtration and a sufficient amount of fibers to form a matrix of self-bonding fibers. The surface of the particulate has been modified with a melamine formaldehyde cationic colloid.
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