CN106745963A - Many step combined purifying radiocesium polluted drinking water method and devices - Google Patents
Many step combined purifying radiocesium polluted drinking water method and devices Download PDFInfo
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- CN106745963A CN106745963A CN201611075187.7A CN201611075187A CN106745963A CN 106745963 A CN106745963 A CN 106745963A CN 201611075187 A CN201611075187 A CN 201611075187A CN 106745963 A CN106745963 A CN 106745963A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- G21F9/001—Decontamination of contaminated objects, apparatus, clothes, food; Preventing contamination thereof
-
- 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
- G21F9/008—Apparatus specially adapted for mixing or disposing radioactively contamined material
-
- 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
- G21F9/12—Processing by absorption; by adsorption; by ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/006—Radioactive compounds
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Food Science & Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to a kind of many step combined purifying radiocesium polluted drinking water method and devices.By absorption/coagulation, precipitation and UF membrane；To ferrocyanide copper adsorbent and aluminum salt is added in adsorption tank, 10 20min are reacted after being sufficiently mixed with radiocesium contaminant water；10 15min are precipitated, subsequent supernatant enters UF membrane pond；Into the supernatant in UF membrane pond, the water outlet after doughnut membrane filtration.One is adsorbent and coagulant while adding, and simplifies technological operation；Two is the sedimentation function for strengthening ferrocyanide copper adsorbent using independent precipitation unit, so that decelerating membrane pollution.Suitable for the emergency processing of radiocesium polluted drinking water and waste water, have a extensive future, environmental and social benefits are notable.
Description
Technical field
It is exactly the removal radiocesium ion from drinking water the present invention relates to a kind of water technology.There is provided one
Plant many step combined purifying radiocesium polluted drinking water method and devices.
Background technology
As radio isotope is in the application in the fields such as military affairs, the energy, medical treatment, agricultural, there is radioactivity in drinking water source
The probability of pollution is increasing.Cs(137Cs and134Cs) by235U and239Pu nuclear fissions are produced, and are widely present in radioactive pollution water
In.Fukushima, Japan nuclear power plant accident is typical case of the drinking water source by radiocesium within 2011, is made to neighbouring resident and the public
Into serious radioactivity potential hazard.Therefore, for burst radiocesium pollution, research and development efficiently remove radiocesium from drinking water
The emergency processing method of ion is very necessary.
Cesium ion in water body is mainly gone by methods such as absorption/ion exchange, counter-infiltration, chemical precipitation and electrochemistry
Remove.There is the deficiency of the aspects such as cost and Operation and Maintenance in counter-infiltration and electrochemical techniques, be unfavorable for engineer applied；Sodium tetraphenylborate
The precipitation method remove Cs+Although sewage drainage standard can be met, the requirement of drinking water standard can not be still unsatisfactory for, in addition four benzene
Boratex is extremely easy in decomposition into the poisonous and harmful substance containing phenyl ring, there is potential secondary dirt for radiocesium polluted drinking water
Dye.
Copper ferrocyanide adsorption technology has many advantages such as succinct efficient, easy popularization and application, can be with membrane separation technique
Combination treatment radiocesium polluted drinking water, can obtain decontamination factor and cycles of concentration higher, and water outlet Cu2+And CN-
Concentration can meet the World Health Organization《Drinking water quality criterion》(fourth edition) and《Standards for drinking water quality》(GB
Requirement 5749-2006).However, the sedimentation of ferrocyanide copper adsorbent is difficult, increase the burden of subsequent treatment film separation unit,
Serious fouling membrane can be caused, shortens the life-span of film, it is difficult to popularization and application.To improve the precipitability of ferrocyanide copper adsorbent
Can, based on absorption-UF membrane GC-MS, coagulating treatment unit being increased, fouling membrane has slowed down to a certain extent, but according to
So than more serious.Therefore, it is badly in need of a kind of new technology of exploitation, can have both ensured decontamination factor and cycles of concentration higher, again can
Fouling membrane is significantly slowed, for the engineering application of the technology provides good basic condition.
The content of the invention
For problems of the prior art, the present invention proposes absorption/coagulation-precipitation-UF membrane GC-MS, right
Absorption/coagulation-micro-filtration GC-MS is improved of both having carried out：One is adsorbent and coagulant while adding, and simplifies work
Skill is operated；Two is the sedimentation function for strengthening ferrocyanide copper adsorbent using independent precipitation unit, so that decelerating membrane pollution.
The drinking water caesium caused for burst nuclear accident pollutes, and using above-mentioned many step combined purifying technologies, its technological process is simple, structure
Compact, expense is low, simple to operate, high degree of automation, both can to form big particle diameter, structure closely knit, heavy except caesium adsorbent
The good particulate matter of drop performance, reduces the burden to follow-up UF membrane, and the decontamination factor and cycles of concentration of caesium are improve again, is one
Plant economical and practical radiocesium polluted drinking water emergency processing method.
Technical scheme is as follows：
Many step combined purifying radiocesium polluted drinking water methods, its step is as follows：
(1) absorption/coagulation：It is dirty with radiocesium to ferrocyanide copper adsorbent and aluminum salt is added in adsorption tank
Dye water reacts 10-20min after being sufficiently mixed；
(2) precipitate：After absorption/coagulation, 10-15min is precipitated, subsequent supernatant enters UF membrane pond；
(3) UF membrane：Into the supernatant in UF membrane pond, the water outlet after doughnut membrane filtration.
Ferrocyanide copper adsorbent dosage described in preferred steps (2) is 20-40mg/L, aluminum salt dosage
(with Al3+Meter) it is 3-5mg/L.
The aluminum salt of preferred steps (2) is the aluminium polychloride or aluminum sulfate commonly used in water process.
The UF membrane pond residence time of preferred steps (3) is 30 ± 5min.
Many step combined purifying radiocesium polluted drinking water devices of the invention, radiocesium contaminant water is even inhaled through intake pump
The water inlet on attached pond top, the water inlet of the supernatant pipeline connection sedimentation basin bottom of adsorption tank, the supernatant pipeline of sedimentation basin
The water inlet on junctional membrane separate tank top, hollow-fibre membrane inside UF membrane pond is through outlet pipe and flowmeter, motor-driven valve and goes out
Water pump is connected；Adsorbent adds the feeding opening that pump and coagulant dosage pump connect adsorption tank top by chemical feed pipe, adsorption tank
Equipped with agitator；The air hose on air blower junctional membrane separate tank top.
Hollow-fibre membrane described in preferred steps (3) is microfiltration membranes or milipore filter.
The beneficial effects of the present invention are：For the drinking water source radiocesium pollution of burst, radiation can be significantly improved
Property caesium decontamination factor and cycles of concentration, for surrounding area provide safety Drinking Water, while substantially reducing Spent Radioactive
The yield of thing, reduces radioactive pollution to environment and the potential hazard of the public.Reactor based on the method can be as needed
Fixed or wheeled apparatus is designed to, design scale can also flexibly be chosen, it is adaptable to radiocesium polluted drinking water and useless
The emergency processing of water, has a extensive future, and environmental and social benefits are notable.
Brief description of the drawings
Fig. 1：It is apparatus of the present invention figure.
In figure：1- intake pumps；2- adsorption tanks；3- sedimentation basins；4- UF membranes pond；5- hollow-fibre membranes；6- flowmeters；7- electricity
Dynamic valve；8- goes out water pump；9- adsorbents add pump；10- coagulant dosage pumps；11- agitators；12- air blowers.
Specific embodiment
Embodiments of the present invention are illustrated below in conjunction with accompanying drawing.It should be noted that the present embodiment is narrative
, rather than limited, protection scope of the present invention is not limited with this embodiment.
The device of present example is shown in accompanying drawing.Radiocesium contaminant water connects the water inlet on the top of adsorption tank 2 through intake pump 1,
The water inlet of supernatant pipeline connection sedimentation basin 3 bottom of adsorption tank 2, on the supernatant pipeline junctional membrane separate tank 4 of sedimentation basin 3
The water inlet in portion, hollow-fibre membrane 5 inside UF membrane pond 4 is through outlet pipe and flowmeter 6, motor-driven valve 7 and goes out water pump 8 and is connected；
Adsorbent adds the feeding opening that pump 9 and coagulant dosage pump 10 connect the top of adsorption tank 2 by chemical feed pipe, and adsorption tank 2 is equipped with
Agitator 11；The air hose on the top of 12 junctional membrane separate tank of air blower 4.Adsorption tank pond and sedimentation basin are Organic glass column, Φ × H
=240 × 1200mm；UF membrane pond is Organic glass column, Φ × H=100 × 1500mm, equipped with 1 hollow-fibre membrane, material
It is Kynoar, nominal pore size is 0.22 μm, and effective area is 0.5m2, intake pump is peristaltic pump with water pump is gone out.Device is used
PLC (Programmable Logic Controller) controls, fully automatic operation, PLC are programmed using current techique.The daily 24h of device continuously runs, continuously
Water inlet, continuous effluent.
Specific operation process the following is：
Before device starts, the raw water of setting concentration is prepared with originally water dissolves cesium chloride or cesium sulfate.
Filtration stage：Under PLC controls, the suction simulated emission caesium contaminant water of intake pump 1 enters adsorption tank 2；Meanwhile, inhale
Attached dose adds pump 9 and coagulant dosage pump 10 and adds adsorption tank 2, agitator 11 continuously to stir copper ferrocyanide and aluminum sulfate respectively
Mixing makes medicament enter sedimentation basin 3 after being sufficiently mixed reaction with water；In sedimentation basin 3, the supernatant after separation of solid and liquid enters UF membrane to water
Pond 4, through hollow-fibre membrane 5, flowmeter 6, motor-driven valve 7 and water outlet after going out water pump 10.Air blower 12 continuously exposes to UF membrane pond 4
Gas, to slow down the pollution of hollow-fibre membrane 5.
Embodiment 1：The initial activity concentration of simulated emission cesium chloride raw water is 920Bq/L, and stabilization cesium ion concentration is
0.25mg/L.When ferrocyanide copper adsorbent dosage be 20mg/L, aluminum sulfate dosage (with Al3+Meter) for 3mg/L when, inhale
Attached/coagulation 10min, precipitates 10min, and the UF membrane pond residence time is 30min.Test water outlet stable cesium ion clearance be
99.90%, simulation activity concentration is 0.90Bq/L.
Embodiment 2：The initial activity concentration of simulated emission cesium chloride raw water is 920Bq/L, and stabilization cesium ion concentration is
0.25mg/L.When ferrocyanide copper adsorbent dosage be 20mg/L, aluminum sulfate dosage (with Al3+Meter) for 5mg/L when, inhale
Attached/coagulation 20min, precipitates 10min, and the UF membrane pond residence time is 30min.Test water outlet stable cesium ion clearance be
99.91%, simulation activity concentration is 0.85Bq/L, is met《Standards for drinking water quality》The requirement of (GB 5749-2006).
Embodiment 3：The initial activity concentration of simulated emission cesium chloride raw water is 920Bq/L, and stabilization cesium ion concentration is
0.25mg/L.When ferrocyanide copper adsorbent dosage be 20mg/L, aluminum sulfate dosage (with Al3+Meter) for 5mg/L when, inhale
Attached/coagulation 10min, precipitates 15min, and the UF membrane pond residence time is 30min.Test water outlet stable cesium ion clearance be
99.90%, simulation activity concentration is 0.89Bq/L.
Embodiment 4：The initial activity concentration of simulated emission cesium chloride raw water is 920Bq/L, and stabilization cesium ion concentration is
0.25mg/L.When ferrocyanide copper adsorbent dosage be 20mg/L, aluminum sulfate dosage (with Al3+Meter) for 5mg/L when, inhale
Attached/coagulation 20min, precipitates 15min, and the UF membrane pond residence time is 30min.Test water outlet cesium ion activity concentration be
0.84Bq/L。
Embodiment 5：The initial activity concentration of simulated emission cesium chloride raw water is 920Bq/L, and stabilization cesium ion concentration is
0.25mg/L.When ferrocyanide copper adsorbent dosage be 40mg/L, aluminum sulfate dosage (with Al3+Meter) for 3mg/L when, inhale
Attached/coagulation 10min, precipitates 10min, and the UF membrane pond residence time is 30min.Test water outlet stable cesium ion clearance be
99.92%, simulation activity concentration is 0.78Bq/L.
Embodiment 6：The initial activity concentration of simulated emission cesium chloride raw water is 920Bq/L, and stabilization cesium ion concentration is
0.25mg/L.When ferrocyanide copper adsorbent dosage be 40mg/L, aluminum sulfate dosage (with Al3+Meter) for 5mg/L when, inhale
Attached/coagulation 10min, precipitates 10min, and the UF membrane pond residence time is 30min.Test water outlet stable cesium ion clearance be
99.92%, simulation activity concentration is 0.76Bq/L.
Embodiment 7：The initial activity concentration of simulated emission cesium chloride raw water is 920Bq/L, and stabilization cesium ion concentration is
0.25mg/L.When ferrocyanide copper adsorbent dosage be 40mg/L, aluminum sulfate dosage (with Al3+Meter) for 5mg/L when, inhale
Attached/coagulation 20min, precipitates 15min, and the UF membrane pond residence time is 30min.Test water outlet stable cesium ion clearance be
99.92%, simulation activity concentration is 0.70Bq/L.
Embodiment 8：The initial activity concentration of simulated emission cesium chloride raw water is 1110Bq/L, and stabilization cesium ion concentration is
0.30mg/L.When ferrocyanide copper adsorbent dosage be 20mg/L, aluminum sulfate dosage (with Al3+Meter) for 5mg/L when, inhale
Attached/coagulation 10min, precipitates 10min, and the UF membrane pond residence time is 30min.Test water outlet stable cesium ion clearance be
99.92%, analog submodule activity concentration is 0.91Bq/L.
Embodiment 8：The initial activity concentration of simulated emission cesium chloride raw water is 1110Bq/L, and stabilization cesium ion concentration is
0.30mg/L.When ferrocyanide copper adsorbent dosage be 40mg/L, aluminium polychloride dosage (with Al3+Meter) for 5mg/L when,
Absorption/coagulation 20min, precipitates 15min, and the UF membrane pond residence time is 30min.Test water outlet stable cesium ion clearance be
99.93%, simulation activity concentration is 0.80Bq/L.
Claims (6)
1. the radiocesium polluted drinking water method of step combined purifying more than, it is characterized in that step is as follows：
(1) absorption/coagulation：To ferrocyanide copper adsorbent and aluminum salt is added in adsorption tank, with radiocesium contaminant water
10-20min is reacted after being sufficiently mixed；
(2) precipitate：After absorption/coagulation, 10-15min is precipitated, subsequent supernatant enters UF membrane pond；
(3) UF membrane：Into the supernatant in UF membrane pond, the water outlet after doughnut membrane filtration.
2. the method for claim 1, it is characterized in that the ferrocyanide copper adsorbent dosage described in step (2) is 20-
40mg/L, aluminum salt dosage is (with Al3+Meter) it is 3-5mg/L.
3. the method for claim 1, it is characterized in that the aluminum salt of step (2) is the polymerization chlorine commonly used in water process
Change aluminium or aluminum sulfate.
4. the method for claim 1, it is characterized in that the UF membrane pond residence time of step (3) is 30 ± 5min.
5. many step combined purifying radiocesium polluted drinking water devices as claimed in claim 1, it is characterized in that radiocesium is dirty
Dye water connects the water inlet on adsorption tank top through intake pump, and the water inlet of the supernatant pipeline connection sedimentation basin bottom of adsorption tank sinks
The water inlet on the supernatant pipeline junctional membrane separate tank top in shallow lake pond, the hollow-fibre membrane inside UF membrane pond is through outlet pipe and stream
Gauge, motor-driven valve and go out water pump connection；Adsorbent adds pump and coagulant dosage pump and connects adsorption tank top by chemical feed pipe
Feeding opening, adsorption tank be equipped with agitator；The air hose on air blower junctional membrane separate tank top.
6. the method for claim 1, it is characterized in that the hollow-fibre membrane described in step (3) is microfiltration membranes or milipore filter.
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| CN201611075187.7A CN106745963A (en) | 2016-11-29 | 2016-11-29 | Many step combined purifying radiocesium polluted drinking water method and devices |
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| CN201611075187.7A CN106745963A (en) | 2016-11-29 | 2016-11-29 | Many step combined purifying radiocesium polluted drinking water method and devices |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935217A (en) * | 2017-11-24 | 2018-04-20 | 上海巴安水务股份有限公司 | A kind of waterborne radioactivity radium element removes system |
| CN108147572A (en) * | 2018-01-23 | 2018-06-12 | 常州大学 | A kind of method of micro-polluted water treatment |
| CN109205842A (en) * | 2018-10-12 | 2019-01-15 | 天津大学 | A kind of processing method of silver ammonia waste water |
| CN109448881A (en) * | 2018-12-05 | 2019-03-08 | 天津大学 | The devices and methods therefor of multistep Combined Treatment radioactive iodine pollution water |
| CN111111621A (en) * | 2018-11-01 | 2020-05-08 | 四川德天合盛环保科技有限公司 | Method for fixing copper ferrocyanide on PVDF hollow fiber membrane |
-
2016
- 2016-11-29 CN CN201611075187.7A patent/CN106745963A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 王旭骞等: "吸附/混凝—微滤工艺处理模拟放射性铯污染水", 《中国给水排水》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935217A (en) * | 2017-11-24 | 2018-04-20 | 上海巴安水务股份有限公司 | A kind of waterborne radioactivity radium element removes system |
| CN108147572A (en) * | 2018-01-23 | 2018-06-12 | 常州大学 | A kind of method of micro-polluted water treatment |
| CN109205842A (en) * | 2018-10-12 | 2019-01-15 | 天津大学 | A kind of processing method of silver ammonia waste water |
| CN111111621A (en) * | 2018-11-01 | 2020-05-08 | 四川德天合盛环保科技有限公司 | Method for fixing copper ferrocyanide on PVDF hollow fiber membrane |
| CN109448881A (en) * | 2018-12-05 | 2019-03-08 | 天津大学 | The devices and methods therefor of multistep Combined Treatment radioactive iodine pollution water |
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