Patent Number: 060404914
Section: claims

1. A method for dewatering and containing radioactive, aqueous waste, comprising the steps of: introducing radioactive, aqueous waste into a filtration container, the filtration container being an inner sack having a bottom provided with a straining cloth;  dewatering the waste in the inner sack such that substantially all dewatering of the waste is carried out through the straining cloth;  recirculating filtration water resulting from dewatering the waste through the waste in the inner sack for cleaning of the filtration water;  sealing the inner sack after dewatering the waste; and  disposing of dewatered waste in a disposable container structure including the inner sack holding the dewatered waste and an outer container enclosing the inner sack.  a disposable container structure including  a collecting container for receiving filtration water resulting from dewatering waste in the inner sack;  suspension means for suspending the inner sack and the waste therein above the collecting container; and  means for recirculating filtration water intercepted by the collecting container through the waste in the inner sack, 2. A method as claimed in claim 1, wherein recirculation of the filtration water includes pumping the filtration water from a collecting container disposed below the inner sack to a sprinkler disposed above the inner sack and distributing the filtration water over the waste in the inner sack with the sprinkler. 3. method as claimed in claim 2, comprising the further step of applying a negative pressure to an outside of the of the inner sack. 4. A method as claimed in claim 1, comprising the further step of applying a negative pressure to an outside of the bottom of the inner sack. 5. A method as claimed in claim 4, wherein the dewatering includes a first step of suspending the inner sack holding the waste above a collecting container for collecting the filtration water, and a second step of moving the inner sack to a station separate from the collecting container and drip-dewatering the inner sack and applying a negative pressure to an outside of the bottom of the inner sack. 6. A method as claimed in claim 1, wherein the outer container is a carrying outer sack. 7. A method as claimed in claim 6, comprising the further step of sealing the inner sack in a watertight sack before enclosing the inner sack in the outer container. 8. A method as claimed in claim 6, comprising the further step of applying a negative pressure to an outside of the bottom of the inner sack. 9. An apparatus for dewatering and containing radioactive, aqueous waste, comprising: 10. An apparatus as claimed in claim 9, further comprising means for applying a negative pressure to an outside of the bottom of the inner sack. 11. An apparatus as claimed in claim 10, wherein the means for applying a negative pressure comprises a suction box which is separate from the collecting container and which includes a supporting surface for supporting the inner sack and at least one opening formed in the supporting surface and in communication with a negative pressure source. 12. An apparatus as claimed in claim 10, wherein the outer container is a sack. 13. An apparatus as claimed in claim 10, wherein the inner sack is provided with lifting eyes at its open end for cooperating with the suspension means for suspension of the inner sack relative to the collecting container (20). 14. An apparatus as claimed in claim 10, wherein the inner sack is provided with a bottom reinforcement arranged on an outside of the straining-cloth bottom and connected to sides of the inner sack. 15. An apparatus as claimed in claim 10, wherein the inner sack has a volume of approximately 1 m.sup.3. 16. An apparatus as claimed in claim 9, wherein the outer container is a sack. 17. An apparatus as claimed in claim 16, wherein the outer sack is provided with lifting eyes at an open end thereof. 18. An apparatus as claimed in claim 9, wherein the inner sack is provided with lifting eyes at its open end for cooperating with the suspension means for suspension of the inner sack relative to the collecting container (20). 19. An apparatus as claimed in claim 18, further comprising means for applying a negative pressure to an outside of the of the inner sack. 20. An apparatus as claimed in claim 9, wherein the inner sack is provided with a bottom reinforcement arranged on an outside of the straining-cloth bottom and connected to sides of the inner sack. 21. An apparatus as claimed in claim 9, wherein the inner sack has a volume of approximately 1 m.sup.3.