McqMate
| Q. |
During the disposal of the sludge, it must be |
| A. | liquefied |
| B. | dried |
| C. | burned |
| D. | fluidized |
| Answer» B. dried | |
| Explanation: the sludge can be dried in planted or unplanted drying beds, settling or thickening ponds. if the sludge is dried or composted, it can be applied in agriculture as a valuable nutrient. | |
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