| 摘要 |
A method of preparing material for use in purifying water is disclosed. The material is advantageously processed from used, waste newsprint by grinding it until it will pass through a 70-80 mesh screen, cleaning the ground newsprint with solvent to remove residual oil, scorching the cleaned newsprint and then regrinding to a fineness that will pass through a 400-mesh screen. The material when added to water to be purified reduces the BOD content of the water being treated.
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