| 摘要 |
A method of treating liquid sewage, including solids, includes (A) COLLECTING THE SOLIDS IN A HORIZONTALLY ELONGATED NARROW ZONE AT THE BOTTOM OF A SEWAGE POND, (B) GENERATING A STREAM OF GAS BUBBLES, AND (C) SUCCESSIVELY SUBJECTING SAID SOLIDS LENGTHWISE OF SAID ZONE TO IMPINGEMENT OF SAID STREAM.
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