CN203545801U - Boron-containing radioactive wastewater treatment device - Google Patents
Boron-containing radioactive wastewater treatment device Download PDFInfo
- Publication number
- CN203545801U CN203545801U CN201320707757.5U CN201320707757U CN203545801U CN 203545801 U CN203545801 U CN 203545801U CN 201320707757 U CN201320707757 U CN 201320707757U CN 203545801 U CN203545801 U CN 203545801U
- Authority
- CN
- China
- Prior art keywords
- water
- reverse osmosis
- stage
- waste water
- boron
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910052796 boron Inorganic materials 0.000 title claims abstract description 27
- 239000002354 radioactive wastewater Substances 0.000 title claims abstract description 22
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 65
- 239000002351 wastewater Substances 0.000 claims abstract description 54
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 45
- 239000003513 alkali Substances 0.000 claims abstract description 20
- 238000007599 discharging Methods 0.000 claims abstract description 19
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 13
- 230000014759 maintenance of location Effects 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 11
- 239000007788 liquid Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 3
- 239000008213 purified water Substances 0.000 abstract 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 5
- 239000004327 boric acid Substances 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000005189 flocculation Methods 0.000 description 3
- 230000002285 radioactive effect Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000009388 chemical precipitation Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002901 radioactive waste Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000009287 sand filtration Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- NVIFVTYDZMXWGX-UHFFFAOYSA-N sodium metaborate Chemical compound [Na+].[O-]B=O NVIFVTYDZMXWGX-UHFFFAOYSA-N 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model provides a boron-containing radioactive wastewater treatment device, which comprises a wastewater storage tank, a material supplying pump, a security filter, a first-stage high-pressure pump, a first-stage reverse osmosis assembly, a second-stage high-pressure pump and a second-stage reverse osmosis assembly which are connected in sequence, wherein the wastewater storage tank is provided with three water inlets and a water outlet; boron-containing radioactive wastewater discharged from a nuclear power plant reactor enters the wastewater storage tank through the first water inlet; an alkali liquid adding device is arranged on a pipeline between the water outlet of the wastewater storage tank and the material supplying pump; the water outlet of the material supplying pump is connected with the second water inlet of the wastewater storage tank by a valve; the concentrated water outlet of the first-stage reverse osmosis assembly is connected with the third water inlet of the wastewater storage tank by a first-stage concentrated water circulating valve and is connected with a concentrated water discharging opening through a first-stage concentrated water discharging valve; the permeation water outlet of the first-stage reverse osmosis assembly is connected with a purified water discharging opening by a first-stage permeation water discharging valve; the concentrated water outlet of the second-stage reverse osmosis assembly is connected with the third water inlet of the wastewater storage tank by a second-stage concentrated water circulating valve; the permeation water outlet of the second-stage reverse osmosis assembly is connected with a purified water discharging opening by a second-stage permeation water discharging valve. The boron-containing radioactive wastewater treatment device has the advantages of simple process, small occupied land, convenience for operation and less secondary waste generation amount.
Description
Technical field
The utility model relates to nuclear industry radioactive liquid waste process field, specifically a kind of boron-containing radioactive wastewater treatment equipment.
Background technology
In pressurized water reactor Nuclear power plants, boric acid is as soluble neutron absorber, adds in a loop Main Coolant in order to regulate reactivity, simultaneously as the preparation of safety injection system solution.Under normal reactor operation and emergency conditions, in a loop and part subsystem, can discharge a large amount of borated radioactive wastewaters.The boric acid overwhelming majority in some Nuclear power plants waste water containing borons is reclaimed multiplexing by boron recovery system, some needs discharge as boron-containing radioactive waste liquid; Some Nuclear power plants do not arrange boron recovery system, and waste water containing boron needs after treatment to environmental emission.
At present, the treatment process of boron-containing radioactive waste water is first to add wherein a certain amount of alkali, make it with waste liquid in boric acid generate stable sodium metaborate, and regulate pH to 7～8.Then send into vaporizer and evaporate, the secondary steam phlegma that evaporation produces after testing radioactive concentration is discharged after qualified, steams raffinate and carries out cement solidification processing.The shortcoming of evaporation process is that heat energy consumption is large, and processing costs is very high, and vapo(u)rization system more complicated, and the workload of operation and maintenance maintenance is all very large.Also have report to adopt chemical precipitation to send out processing waste water containing boron, as Chinese patent 02108593.5 adopts two-stage oxidizing/flocculation process, process waste water containing boron, first in waste water, add H
2o
2as oxygenant, Ca (OH)
2, Al
2(SO4)
2or NaAlO
2as inorganic flocculating agent, through first step oxidation/flocculation, then add polymeric flocculant to carry out solid-liquid separation, and then add medicament to carry out second stage oxidation/flocculation.The shortcoming of this method is technique more complicated, need to consume a large amount of chemical agents, and the follow-up disposal of the radioactivity mud of generation also bothers.
Summary of the invention
The utility model provides a kind of boron-containing radioactive wastewater treatment equipment, both can overcome evaporation process system complex, shortcoming that energy consumption is high, has also avoided the large problem of chemical precipitation method radioactivity sludge disposal difficulty.
The technical solution of the utility model is: a kind of boron-containing radioactive wastewater treatment equipment, comprise the waste water storage groove connecting successively, charging pump, cartridge filter, one-level high-pressure pump, first-stage reverse osmosis assembly, secondary high-pressure pump and two-pass reverse osmosis assembly, waste water storage groove is provided with three water-ins and a water outlet, the boron-containing radioactive waste water of discharging from nuclear power plant's reactor enters waste water storage groove by the first water-in, water outlet and the pipeline between charging pump of waste water storage groove are provided with alkali lye throwing device, the water outlet of charging pump is also connected with the second water-in of waste water storage groove by valve, the condensed water water outlet of first-stage reverse osmosis assembly is connected with the 3rd water-in of waste water storage groove by one-level condensed water recycle valve, is connected by one-level condensed water bleed valve with condensed water discharge outlet simultaneously, the water water outlet that sees through of first-stage reverse osmosis assembly is connected with two-pass reverse osmosis assembly by secondary high-pressure pump, sees through water discharging valve be simultaneously connected with the discharge outlet of purifying waste water by one-level, the condensed water water outlet of two-pass reverse osmosis assembly is connected with the 3rd water-in of waste water storage groove by secondary condensed water recycle valve, and the water water outlet that sees through of two-pass reverse osmosis assembly sees through water discharging valve by secondary and is connected with the discharge outlet of purifying waste water.
Boron-containing radioactive wastewater treatment equipment as above, described alkali lye throwing device comprises alkali lye retention tank and the chemicals feed pump being connected with alkali lye retention tank.
Boron-containing radioactive wastewater treatment equipment as above, the filtration medium in cartridge filter adopts wire wound filter core, fusion-jet type filter core, folding type filter element or filter bag.
The utility model, when the radioactive concentration of waste water is reduced to below emission limit, can drop to minimum value as much as possible by the volume of concentrating spent liquor, has advantages of that technique is simple, take up an area less, easy to operate and secondary refuse generation is few.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model boron-containing radioactive wastewater treatment equipment.
In figure: 1-waste water storage groove, 2-chemicals feed pump, 3-alkali lye retention tank, 4-charging pump, 5-cartridge filter, 6-one-level high-pressure pump, 7-first-stage reverse osmosis assembly, 8-secondary high-pressure pump, 9-two-pass reverse osmosis assembly, 10-one-level condensed water recycle valve, 11-one-level condensed water bleed valve, 12-one-level sees through water discharging valve, 13-secondary condensed water recycle valve, and 14-secondary sees through water discharging valve.
Embodiment
Below in conjunction with the accompanying drawing in the utility model, the technical scheme in the utility model is clearly and completely described.
Figure 1 shows that the structural representation of one of them embodiment of the utility model boron-containing radioactive wastewater treatment equipment, described boron-containing radioactive wastewater treatment equipment comprises waste water storage groove 1, chemicals feed pump 2, alkali lye retention tank 3, charging pump 4, cartridge filter 5, one-level high-pressure pump 6, first-stage reverse osmosis assembly 7, secondary high-pressure pump 8 and two-pass reverse osmosis assembly 9.
Waste water storage groove 1 is provided with three water-ins and a water outlet, the boron-containing radioactive waste water of discharging from nuclear power plant's reactor enters waste water storage groove 1 by the first water-in, the water outlet of waste water storage groove 1 is connected with the water-in of cartridge filter 5 by charging pump 4, pipeline between the water outlet of waste water storage groove 1 and charging pump 4 is provided with alkali lye throwing device, and described alkali lye throwing device comprises alkali lye retention tank 3 and the chemicals feed pump 2 being connected with alkali lye retention tank 3.The water outlet of charging pump 4 is also connected with the second water-in of waste water storage groove 1 by valve.Between the water-in of the water outlet of charging pump 4 and cartridge filter 5, also valve can be set.The water outlet of cartridge filter 5 is connected with first-stage reverse osmosis assembly 7 by one-level high-pressure pump 6.The condensed water water outlet of first-stage reverse osmosis assembly 7 is connected with the 3rd water-in of waste water storage groove 1 by one-level condensed water recycle valve 10, is connected by one-level condensed water bleed valve 11 with condensed water discharge outlet simultaneously.The water water outlet that sees through of first-stage reverse osmosis assembly 7 is connected with two-pass reverse osmosis assembly 9 by secondary high-pressure pump 8, sees through water discharging valve 12 be simultaneously connected with the discharge outlet of purifying waste water by one-level.The condensed water water outlet of two-pass reverse osmosis assembly 9 is connected with the 3rd water-in of waste water storage groove 1 by secondary condensed water recycle valve 13, and the water water outlet that sees through of two-pass reverse osmosis assembly 9 sees through water discharging valve 14 by secondary and is connected with the discharge outlet of purifying waste water.
Principle of work of the present utility model: the boron-containing radioactive waste water of discharging from nuclear power plant's reactor enters waste water storage groove 1 by the first water-in, by chemicals feed pump 2, the alkali lye in alkali lye retention tank 3 is injected in waste water as required, by charging pump 4, waste water is sent into cartridge filter 5 and filter, hold back suspended impurity possible residual in waste water etc.Waste water after cartridge filter 5 filters is sent into first-stage reverse osmosis assembly 7 by one-level high-pressure pump 6 and is processed, and removes waterborne radioactivity nucleic, holds back the boric acid in waste water simultaneously.The condensed water of first-stage reverse osmosis by one-level see through water discharging valve 12, the discharge outlet of purifying waste water directly discharges, or turns back in waste water storage groove 1 by one-level condensed water recycle valve 10.The water that sees through of first-stage reverse osmosis enters two-pass reverse osmosis assembly 9 after by 8 pressurizations of secondary high-pressure pump and further purifies, the seeing through water-borne radioactivity concentration and can drop to below target value of two-pass reverse osmosis, the condensed water water quality of two-pass reverse osmosis is better, can return to the import of first-stage reverse osmosis assembly 7 or turn back in waste water storage groove 1 by secondary condensed water recycle valve 13.
The utlity model has following features:
(1) adopt cartridge filter as the pre-treatment of reverse osmosis unit, avoid " quartz sand filtration+active carbon filtration " pre-treatment to take up an area the shortcoming large, secondary refuse generation is large, also can overcome ultrafiltration pretreatment complex process, need frequent problem of rinsing.
(2) filtration medium in cartridge filter can adopt wire wound filter core, fusion-jet type filter core, folding type filter element or filter bag, and the filtration medium after inefficacy is directly changed, and does not carry out backwash, have advantages of simple, secondary refuse is few.
(3) in second level reverse osmosis apparatus of the present utility model, first-stage reverse osmosis see through water except entering second-stage treatment, can also directly discharge; The condensed water of first-stage reverse osmosis, except partial discharge, can also partly be returned to waste water storage groove 1; The condensed water of two-pass reverse osmosis is not discharged, and directly returns to waste water storage groove 1 or returns to the entrance of first-stage reverse osmosis assembly 7, can improve like this water rate of recovery of reverse osmosis unit, reduces the volume of final concentrated solution.
(4) between waste water storage groove 1 and charging pump 4, alkali lye throwing device is set, alkali lye retention tank 3 and chemicals feed pump 2, can improve the removal effect of reverse osmosis to boric acid.
The above; it is only embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly belong to those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (3)
1. a boron-containing radioactive wastewater treatment equipment, it is characterized in that: comprise the waste water storage groove (1) connecting successively, charging pump (4), cartridge filter (5), one-level high-pressure pump (6), first-stage reverse osmosis assembly (7), secondary high-pressure pump (8) and two-pass reverse osmosis assembly (9), waste water storage groove (1) is provided with three water-ins and a water outlet, the boron-containing radioactive waste water of discharging from nuclear power plant's reactor enters waste water storage groove (1) by the first water-in, pipeline between the water outlet of waste water storage groove (1) and charging pump (4) is provided with alkali lye throwing device, the water outlet of charging pump (4) is also connected with the second water-in of waste water storage groove (1) by valve, the condensed water water outlet of first-stage reverse osmosis assembly (7) is connected with the 3rd water-in of waste water storage groove (1) by one-level condensed water recycle valve (10), is connected by one-level condensed water bleed valve (11) with condensed water discharge outlet simultaneously, the water water outlet that sees through of first-stage reverse osmosis assembly (7) is connected with two-pass reverse osmosis assembly (9) by secondary high-pressure pump (8), sees through water discharging valve (12) be simultaneously connected with the discharge outlet of purifying waste water by one-level, the condensed water water outlet of two-pass reverse osmosis assembly (9) is connected with the 3rd water-in of waste water storage groove (1) by secondary condensed water recycle valve (13), the seeing through water discharging valve (14) through water water outlet by secondary and be connected with the discharge outlet of purifying waste water of two-pass reverse osmosis assembly (9).
2. boron-containing radioactive wastewater treatment equipment as claimed in claim 1, is characterized in that: described alkali lye throwing device comprises alkali lye retention tank (3) and the chemicals feed pump (2) being connected with alkali lye retention tank (3).
3. boron-containing radioactive wastewater treatment equipment as claimed in claim 1, is characterized in that: the filtration medium in cartridge filter (5) adopts wire wound filter core, fusion-jet type filter core, folding type filter element or filter bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320707757.5U CN203545801U (en) | 2013-11-11 | 2013-11-11 | Boron-containing radioactive wastewater treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320707757.5U CN203545801U (en) | 2013-11-11 | 2013-11-11 | Boron-containing radioactive wastewater treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203545801U true CN203545801U (en) | 2014-04-16 |
Family
ID=50463947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320707757.5U Expired - Lifetime CN203545801U (en) | 2013-11-11 | 2013-11-11 | Boron-containing radioactive wastewater treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203545801U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810071A (en) * | 2015-04-16 | 2015-07-29 | 湖南桃花江核电有限公司 | Method and equipment for deep purifying of boron-containing radioactive waste liquid and recovery of boric acid |
| CN105244068A (en) * | 2015-08-31 | 2016-01-13 | 中国核电工程有限公司 | Device and method for treating high-salt content radioactive waste liquid |
| CN109473185A (en) * | 2018-11-13 | 2019-03-15 | 中国核动力研究设计院 | A kind of test device and its test method of robotics reactor shut-off system |
| CN109809593A (en) * | 2019-03-18 | 2019-05-28 | 中国人民解放军海军工程大学 | Device and method suitable for the processing of different salt content low-level radioactive wastewaters |
| CN109994234A (en) * | 2019-04-18 | 2019-07-09 | 飞潮（无锡）过滤技术有限公司 | One kind being used for presurized water reactor primary Ioops cooling water treatment system |
-
2013
- 2013-11-11 CN CN201320707757.5U patent/CN203545801U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810071A (en) * | 2015-04-16 | 2015-07-29 | 湖南桃花江核电有限公司 | Method and equipment for deep purifying of boron-containing radioactive waste liquid and recovery of boric acid |
| CN104810071B (en) * | 2015-04-16 | 2017-02-22 | 湖南桃花江核电有限公司 | Method and equipment for deep purifying of boron-containing radioactive waste liquid and recovery of boric acid |
| CN105244068A (en) * | 2015-08-31 | 2016-01-13 | 中国核电工程有限公司 | Device and method for treating high-salt content radioactive waste liquid |
| CN109473185A (en) * | 2018-11-13 | 2019-03-15 | 中国核动力研究设计院 | A kind of test device and its test method of robotics reactor shut-off system |
| CN109473185B (en) * | 2018-11-13 | 2022-07-29 | 中国核动力研究设计院 | Testing device and testing method for automatic chemical reactor shutdown system |
| CN109809593A (en) * | 2019-03-18 | 2019-05-28 | 中国人民解放军海军工程大学 | Device and method suitable for the processing of different salt content low-level radioactive wastewaters |
| CN109809593B (en) * | 2019-03-18 | 2022-04-05 | 中国人民解放军海军工程大学 | Equipment and method suitable for treating low-level radioactive wastewater with different salt contents |
| CN109994234A (en) * | 2019-04-18 | 2019-07-09 | 飞潮（无锡）过滤技术有限公司 | One kind being used for presurized water reactor primary Ioops cooling water treatment system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |
|
| CX01 | Expiry of patent term |