| 摘要 |
<p>A sequential batch reactor comprises a rotationally moulded settlement tank 1, an aerobic digestion tank 13 received within the settlement tank and means to transfer sewage (i) into the settlement tank, (ii) from the settlement tank to the digestion tank and (iii) away from the digestion tank. Preferably the reactor also has a transfer compartment 17 between the settlement tank and digestion tank, the transfer compartment having holes which prevent gross solids from entering. In use, effluent is introduced into the settlement tank 1 via pipe 10, some of the effluent transfers to compartment 17, an airlift pump 20 is periodically activated so as to transfer an aliquot of sewage into the digestion tank 13 and, once treated, the sewage is transferred away via outlet 23 to a drain or sewage system.</p> |
