| 摘要 |
<p>PURPOSE: To make the sludge itself oderless, to facilitate the storage, transportation and handling of the sludge and to freely utilize the sludge as resources by mixing the sludge mixed with a dehydrating agent consisting essentially of lime and ozone, and deodorizing. CONSTITUTION: Sludge is mixed with a dehydrating agent consisting essentially of lime and ozone, and the sludge is deodorized by the ozone, lime and their interaction. Namely, the dehydrating agent is introduced into a mixing part 4 from a silo 1, the sludge from a hopper 2 and the ozone from an ozonizer 3, and the mixture is heated by a rotary kiln 5. At this time, since the heat is supplied by the heat of hydration of the lime, external heat is not needed. The waste gas from the kiln is scrubbed in a tower 6. Further, ozone is supplied to the cleaning water, and the waste cleaning liq. is remixed with untreated sludge in the sludge hopper 2. Consequently, the sludge itself is made odorless, and the sludge is easily stored, transported and handled.</p> |
