CN105719717A - Nucleation decontamination wastewater treatment technology and system - Google Patents
Nucleation decontamination wastewater treatment technology and system Download PDFInfo
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- CN105719717A CN105719717A CN201610071550.1A CN201610071550A CN105719717A CN 105719717 A CN105719717 A CN 105719717A CN 201610071550 A CN201610071550 A CN 201610071550A CN 105719717 A CN105719717 A CN 105719717A
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
- G21F9/06—Processing
- G21F9/12—Processing by absorption; by adsorption; by ion-exchange
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
- G21F9/06—Processing
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
- G21F9/06—Processing
- G21F9/10—Processing by flocculation
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- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Treatment Of Water By Ion Exchange (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a nucleation decontamination wastewater treatment technology and system.The system manly comprises a coagulating sedimentation integrated reactor, a filter, a multi-medium efficient adsorption tank, an ion exchange softener, a precise filter, an ultrafiltration membrane, a reverse osmosis membrane, an ion exchange softening protector and the like.The nucleation decontamination wastewater treatment technology of the system includes the following steps that nucleation decontamination wastewater is collected, precipitated and primarily separated through an in-situ coagulating sedimentation reactor, separated nucleation decontamination wastewater mixed liquid enters the filter for further solid-liquid separation, a filter outlet solution is sequentially input into the multi-medium efficient adsorption tank and the ion exchange softener, obtained filter liquid passes the precise filter and then is pumped into the ultrafiltration membrane and the reverse osmosis membrane for treatment, and then the filter liquid is discharged through the ion exchange softening protector.The method can solve the nucleation decontamination wastewater treatment problem in a modularization mode, nuclide wastewater and decontamination wastewater can be deeply and efficiently treated under different load conditions at the same time, and water outflow indexes can meet the water supplement reuse and up-to-standard discharge requirements in the decontamination process.
Description
Technical field
The present invention relates to a kind of method being applied to nuclear and chemical injury washing and cleaning Sewage advanced treatment, be specifically related to a kind of meet big flow, high load capacity and can the simultaneously technique of advanced treating nucleic and decontamination wastewater and system.
Background technology
Decontamination refers to being infected with the measure that toxic agent, biological warfare agent, the personnel of radioactive substance, equipment, goods and materials, fortification, road etc. carry out disinfection and eliminate contamination.The purpose of decontamination is to make the army being contaminted avoid or alleviate injury, makes the equipment being contaminted, goods and materials etc. normally to use.Chemical defence decontamination is the vital task that chemical defense force decontamination element implements personnel decontamination's operation.
In the process of chemical defence decontamination, it is mostly to adopt chloride oxidation type disinfectant as primary chemical decontaminant, alpha-contamination decontamination is mainly adopted the mode of high pressure water washing.Therefore, on in coring war and nuclear and chemical accident emergency management and rescue, to the decontamination process suffering coring to pollute personnel, equipment, the decontamination chemical wastewater in a large number with the hardness of high load capacity concentration, strong basicity, severe corrosive and the core decontamination wastewater containing radionuclide will be produced.Soil, vegetation, river and phreatic water etc. can be caused secondary chemical contamination by chemistry decontamination wastewater, and core decontamination wastewater then can pass through internal radiation and external exposure two ways, expand, through food chain, the scope that is contaminted.Accordingly, it would be desirable to adopt rational technique to process these chemistry decontamination wastewaters and core decontamination wastewater, maximized reduction or eliminate its potential hazard brought.
At present, both at home and abroad the research emphasis of nuclear and chemical injury washing and cleaning is always positioned in the Decontamination research and development with equipment.As, CN102335490B discloses a kind of high-pressure water-mist chemical-defense decontamination vehicle, by improving the structure of washing and disinfection car, solves the waste of water and decontaminant and the problem of secondary pollution；CN100553603C discloses a kind of wounded being subject to coring pollution and carries out the nuclear and chemical injury washing and cleaning device of decontamination process, and its advantage is simple in construction, easy to operate, and volume is little, and mobility is good, low cost of manufacture；CN201154931Y discloses a kind of mobile radioactive liquid waste treatment device；CN102201270B discloses a kind of liquid radioactivity liquid waste treatment apparatus etc..Mostly this kind of research is for problems such as the Integration ofTechnology of solving device, protection, mobilitys.
Also there is scholar that the process of radioactive pollution waste water has been studied, such as, CN102930912A discloses the one radioactivity laundrywastes that exceeds standard and processes system, this system be remove in waste water by activated carbon surfactant and small organic molecule, with zeolite filter, the radionuclide ion caesium in low-activity waste water and strontium are removed；CN201965936U discloses a kind of radioactive dirty water emergent treatment system with three anti-functions, this system is to utilize two steps ro, absorption, activated carbon filtration, ultraviolet to combine, and solves nucleic under big flow condition and intercepts and the low contradiction with miniaturization of adsorption efficiency；Cai Bo et al. then carried out adopting coagulation, sand coarse aggregate ratio or activated carbon filtration, ion exchange resin method to process the Study on purification (polluting the research of the simple and easy equipment of purifying of drinking water, health care is equipped, 2012,02:p46-47) of radioactive pollution drinking water；Yellow bright dog et al. carried out coagulating sedimentation as main technique process low-activity waste water research (active carbon purifying low-activity waste water experimentation, functional material, 2004,35:p2573-2575,2578.).
But, in chemical defence decontamination field, the purpose of existing correlational study is more desirable to find novel non-corrosiveness decontaminant, and the less harm to operating personnel and environment, and the core decontamination wastewater being specifically designed in nuclear and chemical injury washing and cleaning operation process to produce and chemistry decontamination wastewater carry out advanced treating simultaneously and also rarely have research.
Summary of the invention
It is an object of the invention to provide a kind of technique to nuclear and chemical injury washing and cleaning wastewater treatment and system, this technique and system have taken into account core decontamination wastewater and the feature of chemistry decontamination wastewater simultaneously, the modularity adopting convenient and efficient is run and management, realize while the nucleic in decontamination wastewater, inorganic salt, antibacterial, macromolecular substances and poisonous and harmful substance, remove efficiently, make waste water qualified discharge after treatment or as Treatment for Reuse, solve the secondary pollution problem in nuclear and chemical injury washing and cleaning field, alleviate chemical defence decontamination operation logistics support burden；Also have efficiently, feature easily.
For achieving the above object, present invention employs following technical scheme: a kind of nuclear and chemical injury washing and cleaning waste water treatment process, realize as follows:
(1) the nuclear and chemical injury washing and cleaning waste water containing float is collected by coagulating sedimentation one reactor according, coagulating sedimentation, initial gross separation, obtain nuclear and chemical injury washing and cleaning waste water mixed liquor and deposit；Deposit is gone in collecting tank；
(2) the nuclear and chemical injury washing and cleaning waste water further solid-liquid separation of mixed liquor input filter initial gross separation gone out, obtains the solid impurity such as solution and float, colloid and mechanical admixture；Solid impurity will be isolated go in step (1) described collecting tank；
(3) resulting solution in step (2) is sequentially input multimedium efficient absorption tank and ion exchange softener, remove in part nucleic, decontamination wastewater poisonous and harmful substance and affect the materials such as the inorganic salt of subsequent technique, colloid, obtaining filtrate；
(4) gained filtrate in step (3) is pumped into after accurate filter ultrafiltration and reverse osmosis membrane successively, remove the inorganic salt of remaining, antibacterial, macromolecular substances and poisonous and harmful substance in mixed liquor, discharge after processing then through ion exchange softening protector.
Preferably, the filter of described step (2) is to adopt disc filter.
Preferably, the multimedium efficient absorption tank of described step (3) is using the multi-compartment bed structure of activated fibre, activated carbon and molecular sieve composition as absorbing unit.
Preferably, the crosspoint of the ion exchange softener of described step (3) adopts ion-exchange fibre.
Preferably, the ultrafiltration of described step (4) is to adopt hollow fiber ultrafiltration membrane, and described reverse osmosis membrane is coiled reverse osmosis membrane.
The nuclear and chemical injury washing and cleaning Waste Water Treatment that the process technique of a kind of present invention of realization adopts, including coagulating sedimentation one reactor according, filter, collecting tank, multimedium efficient absorption tank, ion exchange softener, back washing device, accurate filter, ultrafilter membrane, reverse osmosis membrane, ion exchange softening protector, described coagulating sedimentation one reactor according, filter, multimedium efficient absorption tank, ion exchange softener, back washing device, accurate filter, ultrafilter membrane, reverse osmosis membrane, ion exchange softening protector is sequentially connected with by connecting line, described coagulating sedimentation one reactor according is provided with main material inlet, main material outlet and precipitate outlet, filter is provided with material inlet, material outlet and solid impurity outlet, the deposit outlet of coagulating sedimentation one reactor according and the solid impurity outlet of filter are connected to collecting tank.
In the process system of the present invention, described coagulating sedimentation one reactor according can adopt and utilize nuclear and chemical injury washing and cleaning waste water collection tank to greatest extent, and auxiliary is made up a prescription, offerd medicine and controlled agitating device, and collection dispensing coagulating sedimentation integrally completes.When individual processing core decontamination wastewater, this coagulating sedimentation one reactor according primarily serves the effect of collection, and when locating Physicochemical decontamination wastewater, chemistry decontamination wastewater mainly by coagulating sedimentation and then is realized solid-liquid separation by this reactor, and waste water is carried out preliminary treatment.
Further, may also include regeneration back washing device in the process system of the present invention, described regeneration back washing device connects multimedium efficient absorption tank and ion exchange softener, and the backwash pipeline of regeneration back washing device is connected to coagulating sedimentation one reactor according.After regeneration back washing device is opened, backwash waste is back to coagulating sedimentation one reactor according via backwash pipeline, makes backwash waste again process technique through main body, completes qualified discharge after processing.Back washing device and backwash flow process are mainly for the treatment of chemistry decontamination wastewater.
Further; the process system of the present invention can also include automatic flushing device; described automatic flushing device connects ultrafiltration and reverse osmosis membrane, and reverse osmosis membrane outlet is respectively connecting to front end ultrafiltration, subsequent ion exchange softening protector and total floss hole by three-way valve.
Further, the outlet of described multimedium efficient absorption tank can connect follow-up ion exchange softener by three-way valve or be directly connected to accurate filter.
Further; described system arranges total system automaton (in Figure of description 1 17), makes this system can fully automatic operation, it is possible to be adjusted to manual gear control; whole system has stoppage protection and system high-low pressure defencive function, can prevent system firmware from being damaged by load impact.
The present invention carries out synchronizing advanced treating to realize nuclear and chemical injury washing and cleaning waste water, and described nuclear and chemical injury washing and cleaning waste water refers at core decontamination wastewater containing radionuclide produced by coring war and nuclear and chemical accident emergency management and rescue action and the decontamination composite waste containing the chemical decontamination wastewater in a large number with the hardness of high load capacity concentration, strong basicity, severe corrosive.
The present invention is as follows relative to the Advantageous Effects of prior art:
(1) filler of preferred absorbing unit is constituted, and using the multi-compartment bed structure of activated fibre, activated carbon and molecular sieve composition as efficient stable absorbing unit, can make to reach part Ca before membrance separation2+Effective with organophosphor removes, and ensures the stable operation of follow-up workshop section；Ion-exchange unit part uses more efficient ion-exchange fibre to substitute traditional resin particle, improves removal efficiency；Both can reduce bed resistance and pressure drop, and installation weight alleviates about more than 30% significantly；
(2) use disc filter to substitute traditional quartz sand filtration, device unit weight saving about 30% can be made；Charcoal bed filter element, adopts countercurrent flow mode, reduces bed pressure drop, reduces transmission resistance, it is prevented that bed blocks, improves the operation stability of device；
(3) adopting ion exchange fluidized-bed structure, relative to traditional fixed-bed structure, bed is more evenly distributed, the interaction of liquid-solid two and turbulent flow, can strengthen solid-liquid mass transfer effect, improves device removal efficiency about 20%；
(4) in conjunction with coring decontamination wastewater and in, the special water quality characteristics of low-level radioactive wastewater, adopt the membrance separation combined based on hollow fiber ultrafiltration and coiled reverse osmosis membrane, the complete set technology Integrated Processing System of the front end pretreatment workshop section of supporting improvement simultaneously；
(5) system of the present invention can modularity solve nuclear and chemical injury washing and cleaning waste water process problem, when different load, nuclear waste water and decontamination wastewater can be carried out the degree of depth simultaneously, efficiently process, process wastewater flow rate load range width big, applicable, total system can realize Automated condtrol, treatment effeciency is efficient, operation stability is strong, and effluent index can meet moisturizing reuse or the qualified discharge of decontamination process；
(6) pretreating process and core processing technique are in carrying out repair and maintenance process, and after regeneration back washing device is opened, backwash pipeline is connected to coagulating sedimentation one reactor according, make backwash waste again process technique through main body, maximized are processed by waste water；Without outer row in whole set process systematic procedure, waste water completes from processing rear discharge up to standard, and waste residue centralized collection processes, processing procedure clean environment firendly；
(7) the process system of the present invention has feature removable, that installation weight is light, Vehicular mobile can be become to process system by optimal design-aside further, improve motility, simplicity and high efficiency.
Accompanying drawing explanation
Fig. 1 is the process system schematic diagram of embodiment 1.In figure: 1-coagulating sedimentation one reactor according, 2-controls valve, 3-compression pump; 4-effusion meter, 5-filter, 6-collecting tank; 7-multimedium efficient absorption tank, 8-ion exchange softener, 9-back washing device; 10-accurate filter, 11-high-pressure pump, 12-ultrafilter membrane; 13-reverse osmosis membrane, 14-ion exchange softening protector, 15-discharges general export; 16-backwash liquid waste return header, 17-total system automaton.
Fig. 2 is the tiny sewage treatment technology process schematic diagram of coring of the present invention.
Detailed description of the invention
By the examples below the present invention being described in further details, these embodiments are only used for the present invention is described, do not limit the scope of the invention.
Embodiment 1 adopts the nuclear and chemical injury washing and cleaning Waste Water Treatment of the present invention to carry out process system such as Fig. 1 of chemical wastewater; in figure: 1-coagulating sedimentation one reactor according; 2-controls valve; 3-compression pump, 4-effusion meter, 5-filter; 6-collecting tank; 7-multimedium efficient absorption tank, 8-ion exchange softener, 9-regenerates back washing device; 10-accurate filter; 11-high-pressure pump, 12-ultrafilter membrane, 13-reverse osmosis membrane; 14-ion exchange softening protector; 15-discharges general export, 16-backwash liquid waste return header, 17-total system automaton.
This system can be further divided into pretreatment system and membrane filtration system.Division schematic diagram such as accompanying drawing 2 of system and technological process.
This system is utilized to carry out the technical process of process of chemistry decontamination wastewater as follows:
(1) the chemical decontamination wastewater containing float is carried out coagulating sedimentation by coagulating sedimentation one reactor according 1, carry out initial gross separation simultaneously, obtain waste water mixed liquor and deposit；Deposit is gone in collecting tank 6；
(2) the further solid-liquid separation of waste water mixed liquor input filter 5 initial gross separation gone out, obtains the solid impurity such as solution and float, colloid and mechanical admixture；Solid impurity will be isolated go in collecting tank 6；
(3) resulting solution in step (2) is sequentially input multimedium efficient absorption tank 7 and ion exchange softener 8, obtain filtrate；
(4) by gained filtrate in step (3) after accurate filter 10, pumping into ultrafilter membrane 12 and reverse osmosis membrane 13 successively through high-pressure pump 11, after processing then through ion exchange softening protector 14, through discharge, general export 15 discharges；After testing, the waste water after the process discharged meets discharge standard；
(5) pretreating process and core processing technique are in carrying out repair and maintenance process, after regeneration back washing device 9 is opened, backwash waste refluxes through backwash, it is connected to coagulating sedimentation one reactor according 1 by backwash liquid waste return header 16, make backwash waste again process technique through main body, complete qualified discharge after processing.
Embodiment 2 adopts the technical process of the process that the method and system of the present invention carry out core decontamination radioactive wastewater as follows:
(1) during operation, collect core decontamination radioactive wastewater with coagulating sedimentation one reactor according 1, waste water mixed liquor input filter 5 is carried out solid-liquid separation, obtains solution and solid impurity；Solid impurity will be isolated go in collecting tank 6；
(2) resulting solution in step (1) is sequentially input multimedium efficient absorption tank 7 and ion exchange softener 8, obtain filtrate；
(3) by gained filtrate in step (2) after accurate filter 10, pumping into ultrafilter membrane 12 and reverse osmosis membrane 13 successively through high-pressure pump 11, after processing then through ion exchange softening protector 14, through discharge, general export 15 discharges；The waste water after treatment discharged after testing meets discharge standard, is not detected by the radionuclide ion of contaminative；
(4) pretreating process and core processing technique are in carrying out repair and maintenance process, after regeneration back washing device 9 is opened, backwash waste refluxes through backwash, it is connected to coagulating sedimentation one reactor according 1 by backwash liquid waste return header 16, make backwash waste again process technique through main body, complete qualified discharge after processing.
Described above and in the embodiment shown on drawing, can not resolve is limited determines the design philosophy of the present invention.Technical field in the present invention is held identical skill and can the technical thought of the present invention be changed with various form improvement; as being not limited to above-mentioned embodiment; in this area in conjunction with the difference of wastewater treatment capacity and load; can suitably selecting each processing unit to select on the basis of native system core process, such improvement and change be interpreted as belonging to protection scope of the present invention.
Claims (10)
1. a nuclear and chemical injury washing and cleaning waste water treatment process, it is characterised in that: comprise the steps:
(1) the nuclear and chemical injury washing and cleaning waste water containing float is collected by coagulating sedimentation one reactor according, coagulating sedimentation, initial gross separation, obtain nuclear and chemical injury washing and cleaning waste water mixed liquor and deposit；Deposit is gone in collecting tank；
(2) the nuclear and chemical injury washing and cleaning waste water further solid-liquid separation of mixed liquor input filter initial gross separation gone out, obtains solution and solid impurity；Solid impurity is gone in step (1) described collecting tank；
(3) resulting solution in step (2) is sequentially input multimedium efficient absorption tank and ion exchange softener, obtain filtrate；
(4) gained filtrate in step (3) is pumped into ultrafiltration and reverse osmosis membrane successively after accurate filter, discharge after processing then through ion exchange softening protector.
2. nuclear and chemical injury washing and cleaning waste water treatment process according to claim 1, it is characterised in that: the filter of described step (2) is to adopt disc filter.
3. nuclear and chemical injury washing and cleaning waste water treatment process according to claim 1, it is characterised in that: the multimedium efficient absorption tank of described step (3) is using the multi-compartment bed structure of activated fibre, activated carbon and molecular sieve composition as absorbing unit.
4. nuclear and chemical injury washing and cleaning waste water treatment process according to claim 1, it is characterised in that: the crosspoint of the ion exchange softener of described step (3) adopts ion exchange resin, adopts countercurrent flow mode.
5. nuclear and chemical injury washing and cleaning waste water treatment process according to claim 1, it is characterised in that: the ultrafiltration of described step (4) is to adopt hollow fiber ultrafiltration membrane, and described reverse osmosis membrane is coiled reverse osmosis membrane.
6. the process system realizing nuclear and chemical injury washing and cleaning waste water treatment process described in claim 1, it is characterized in that: include coagulating sedimentation one reactor according, filter, collecting tank, multimedium efficient absorption tank, ion exchange softener, back washing device, accurate filter, ultrafilter membrane, reverse osmosis membrane, ion exchange softening protector, described coagulating sedimentation one reactor according, filter, multimedium efficient absorption tank, ion exchange softener, back washing device, accurate filter, ultrafilter membrane, reverse osmosis membrane, ion exchange softening protector is sequentially connected with by connecting line, described coagulating sedimentation one reactor according is provided with main material inlet, main material outlet and precipitate outlet, filter is provided with material inlet, material outlet and solid impurity outlet, coagulating sedimentation one reactor according deposit outlet and the solid impurity outlet of filter be connected to collecting tank.
7. system according to claim 6, it is characterised in that: also including regeneration back washing device, described regeneration back washing device connects multimedium efficient absorption tank and ion exchange softener, and the backwash pipeline of regeneration back washing device is connected to coagulating sedimentation one reactor according.
8. system according to claim 6; it is characterized in that: also include automatic flushing device; described automatic flushing device connects ultrafiltration and reverse osmosis membrane, and reverse osmosis membrane outlet is respectively connecting to front end ultrafiltration, subsequent ion exchange softening protector and total floss hole by three-way valve.
9. system according to claim 6, it is characterised in that: the outlet of described multimedium efficient absorption tank connects follow-up ion exchange softener by three-way valve or is directly connected to accurate filter.
10. system according to claim 6, it is characterised in that: described system also includes total system automaton.
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| CN201610071550.1A CN105719717B (en) | 2016-02-02 | 2016-02-02 | A kind of nuclear and chemical injury washing and cleaning waste water treatment process and system |
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| CN106442875A (en) * | 2016-08-30 | 2017-02-22 | 总装备部工程设计研究总院 | Dangerous chemical leakage disposal experiment simulation system and method |
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| CN109493988A (en) * | 2018-12-14 | 2019-03-19 | 核工业理化工程研究院 | Core biochemical decontamination waste liquid pretreatment unit and processing method |
| CN110357292A (en) * | 2019-08-22 | 2019-10-22 | 佛山市雅洁源科技股份有限公司 | A kind of nuclear waste water processing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106442875A (en) * | 2016-08-30 | 2017-02-22 | 总装备部工程设计研究总院 | Dangerous chemical leakage disposal experiment simulation system and method |
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| CN109243658A (en) * | 2018-09-18 | 2019-01-18 | 北京清核朝华科技有限公司 | A kind of processing system and processing method of second-order activity decontamination waste liquid |
| CN109493988A (en) * | 2018-12-14 | 2019-03-19 | 核工业理化工程研究院 | Core biochemical decontamination waste liquid pretreatment unit and processing method |
| CN110357292A (en) * | 2019-08-22 | 2019-10-22 | 佛山市雅洁源科技股份有限公司 | A kind of nuclear waste water processing system |
| CN110745973A (en) * | 2019-08-22 | 2020-02-04 | 佛山市雅洁源科技股份有限公司 | Nuclear wastewater treatment system with monitoring device |
| CN110833458A (en) * | 2019-09-29 | 2020-02-25 | 陆远强 | Chemical rescue sub-channel decontamination center in hospital |
| CN112754783A (en) * | 2021-02-07 | 2021-05-07 | 中国人民解放军联勤保障部队第九六〇医院 | Nuclear pollution wounded personnel decontamination device |
| CN112754783B (en) * | 2021-02-07 | 2024-05-07 | 中国人民解放军联勤保障部队第九六〇医院 | Nuclear pollution wounded person decontaminates device |
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