| 摘要 |
<p>A method of clarifying waters having an alkalinity of at least 100 ppm, calculated as CaCO3, which comprises: a. Adding thereto, to form a treated water, an effective amount for the purpose of clarifying said waters of a low-basicity polynuclear aluminum species having the formula: Aln(OH)mZ3n-m wherein, n is at least 1.0 Z is a halide chosen from the group chloride, bromide, iodide, and mixtures thereof, and wherein the ratio of m/n ranges between about 0.25 to about 1.0 and at least 25 mole percent of the polynuclear aluminum species above has n equal to 2.0, and then, b. Allowing sufficient time to form and build a floc dispersed in the treated water, which floc contains turbidity causing components, and then, c. Phase separating the floc from the treated waters to obtain clarified water.</p> |
