| 摘要 |
<p>1502444 Waste water treatment apparatus A JOHNSTON CONSTRUCTION CO Ltd 30 Jan 1976 [30 Jan 1975] 4068/75 Heading C1C A waste water treatment apparatus includes tanks arranged one inside another so as to form channels 17, 18, 19 between the tank walls 13, 14, 15, 16, each channel having a partition 21 extending across it and each tank wall having an opening 22, 23, 24, 25 adjacent a partition whereby waste water introduced into one of the channels flows along the channel until it encounters a partition, thereafter passing through the adjacent opening into a further channel, the waste water eventually being discharged from the last opening, and mechanical aeration means in the channels.</p> |
