Claims
- 1. An apparatus for treating radioactive liquid waste from atomic power plant, which comprises:
- a low electroconductivity liquid waste concentrator of the pressurized evaporation type, for evaporating a low electroconductivity liquid waste with outside steam as a heat source at high temperature,
- a high electroconductivity liquid waste concentrator of the vacuum evaporation type, for evaporating a high electroconductivity liquid waste with the steam generated by evaporation of the low electroconductivity liquid waste,
- a laundry liquid waste concentrator of the vacuum evaporation type for evaporating a laundry liquid waste with steam generated by evaporation of the low electroconductivity liquid waste,
- means for supplying steam generated by evaporation in said low electroconductivity liquid waste concentrator to said high electroconductivity liquid waste concentrator as a heat source for low electroconductivity liquid waste concentration,
- means for supplying steam generated by evaporation in said low electroconductivity liquid waste concentrator to said laundry liquid waste concentrator as a heat source for laundry liquid waste concentration,
- a low electroconductivity liquid waste condenser for condensing the steam from said low electroconductivity liquid waste concentrator, said high electroconductivity liquid waste concentrator and said laundry liquid waste concentrator,
- a high electroconductivity liquid waste condenser for condensing the steam from said high electroconductivity liquid waste concentrator,
- a laundry liquid waste condenser for condensing the steam from said laundry liquid waste concentrator, and
- means for demineralization of condensed low electroconductivity liquid waste, high electroconductivity liquid waste and laundry liquid waste.
- 2. The apparatus according to claim 1, wherein the steam generated by evaporation of the low electroconductivity liquid waste in said low electroconductivity liquid waste concentrator is subjected to increase in pressure and temperature in a compressor, and fed to said high electroconductivity liquid waste concentrator and said laundry liquid waste concentrator.
- 3. The apparatus according to claim 1 or claim 2, wherein said low electroconductivity liquid waste concentrator is kept at an inside pressure of about 1 kg/cm.sup.2 at a temperature of about 120.degree. C.
- 4. The apparatus according to claim 1 or claim 2, wherein said high electroconductivity liquid waste concentrator and said laundry liquid waste concentrator are kept at an inside pressure of about 0.203--about 0.318 kg/cm.sup.2 absolute and an inside temperature of about 60.degree. C.--about 70.degree. C.
- 5. The apparatus according to claim 1, further comprising a low electroconductivity liquid filter operatively connected via valve means to a feed conduit supplying low electroconductivity liquid waste to said low electroconductivity liquid waste concentrator for treating of low electroconductivity liquid waste in excess of that to be concentrated in said concentrator during abnormal operating conditions and during start-up and shut-down of the atomic power plant.
- 6. The apparatus according to claim 1, further comprising another low electroconductivity liquid waste concentrator of the pressurized evaporation type connected in parallel with said low electroconductivity liquid waste concentrator for evaporating the low electroconductivity liquid waste with outside steam and conduit means, including valve means, interconnecting said another low electroconductivity liquid waste concentrator to said high electroconductivity liquid waste concentrator of the vacuum evaporation type for treatment of high electroconductivity liquid waste when the amount of high electroconductivity liquid waste is abnormally large.
Priority Claims (1)
Number |
Date |
Country |
Kind |
55-23622 |
Feb 1980 |
JPX |
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Parent Case Info
This is a continuation of application Ser. No. 238,041, filed Feb. 25, 1981, now abandoned.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
3099607 |
Lustenader et al. |
Jul 1963 |
|
3884767 |
Pottharst, Jr. |
May 1975 |
|
4160812 |
Conroy et al. |
Jul 1979 |
|
Continuations (1)
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Number |
Date |
Country |
Parent |
238041 |
Feb 1981 |
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