| 摘要 |
A reactor filter assembly is provided for purifying water, or other liquids, in an effluent stream, and which is designed, for example, to have a multistate construction. A four-stage system will be described. The influent to the system is first treated with conditioning chemicals and aerated for oxidation and for the removal of undesired gases. The conditioned liquid is then upflowed to a velocity suspended floculation bed into a first solid retention stage, and the operation may be repeated in a second similar stage. A further stage is then provided for final polishing of the filtered water. Backwash and sludge drainage is provided in the system, and may be automatically controlled so that the entire assembly may be unattended.
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