CN106477800A - A kind of power plant desulfurization waste water need not soften enrichment facility - Google Patents
A kind of power plant desulfurization waste water need not soften enrichment facility Download PDFInfo
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- CN106477800A CN106477800A CN201611058117.0A CN201611058117A CN106477800A CN 106477800 A CN106477800 A CN 106477800A CN 201611058117 A CN201611058117 A CN 201611058117A CN 106477800 A CN106477800 A CN 106477800A
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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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
- C01F11/468—Purification of calcium sulfates
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
-
- 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
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/487—Treatment of water, waste water, or sewage with magnetic or electric fields using high frequency electromagnetic fields, e.g. pulsed electromagnetic fields
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of equipment of water-treatment technology field is and in particular to a kind of power plant desulfurization waste water need not soften enrichment facility.The present invention includes crystallizing defecator, high frequency magnetic field generator, EDR device；The water out that produces of crystallization defecator is connected with the import of EDR device, the dope outlet of EDR device is divided into two-way, it is connected with crystallization defecator and vaporising device respectively, water outlet is connected with power plant desulphurization system, in include EDR film group device, EDR film group device is placed in the high frequency magnetic field of high frequency magnetic field generator.It is an advantage of the invention that device structure is simple, easy to operate, and the energy consumption in whole implementation process is low, efficiency height etc..
Description
Technical field
The invention belongs to the equipment of water-treatment technology field is and in particular to a kind of power plant desulfurization waste water need not soften concentration dress
Put.
Technical background
The water consumption of thermal power industry ranks five high water usage industries (thermal power generation, weaving, papermaking, iron and steel and oil
Chemical industry) first of, its water consumption accounts for more than the 50% of national water for industrial use total amount.According to former State Economic and Trade Commission auspices《Work
Industry water saving " 12 " planning》, national water total amount controls within 6350 billion cubic meters, and ten thousand yuan of whole nation GDP water consumption reduces
To less than 105 cubic metres, declined 30% than 2010；Ten thousand yuan of industrial added value water consumptions are reduced to 63 cubic metres, ratio 2010
Reduce by more than 30%；
The average leak rate of national the planned city water supply network is less than 18%；Desalinization, reclaimed wastewater reuse, rainwater accumulating
Substitute fresh fresh water amount using the unconventional water utilization year such as, mine drainage utilization and reach more than 100 billion cubic meters.By 2015,
Direct cooling water withdrawal zero growth rate is accomplished in requirement, and unit generated energy water withdrawal drops to (after deduction once-through cooling water) 29.9m3/
Ten thousand kilowatt hours (equivalent generating water consumption index is 0.833m3/ (GW.s)).Water resource spatial distribution and Annual distribution due to China
All extremely unbalanced, the 8I% integrated distribution of gross amount of water resources is in the Changjiang river and its areas to the south, the precipitation quantity set of annual 60%-80%
In 4 months flood seasons, its result is that the northern area of China especially Huang, Huaihe River, the wide geographic area of extra large three basin 9 provinces and cities seriously lack
Water.Therefore, the thermal power plant in areas of serious is necessarily required by the generating water consumption index control lower than average national level
Water consumption processed, most of power plant is required to accomplish waste water zero emission.
Wastewater zero discharge (Zero Liquid Discharge, abbreviation ZLD), has been first by economy since the 1970's
Developed country proposes, studies and applies, at present still in the comprehensive application technology constantly improving.ZLD generally refers to
Factory with water in addition to the natural loss such as evaporation, wind, all (by various process) use in factory's interior circulation, outwards do not arrange
Let alone what waste water, in water circulation system, the salt of accumulation passes through evaporation, crystallization is discharged in solid form.Because thermal power plant's water consumption
Greatly, and have substantial amounts of remaining (giving up) heat to be available for utilizing, thus the main application fields of ZLD are thermal power plants.China's power industry
Start from " 95 " (1995-2000).Start to throw under the increasingly serious situation of water scarcity and water pollution situation forces
Enter the experimental study that strength carries out ZLD, and start practical application in thermal power plant.Up to the present, existing ten Yu Jia thermal power plants
Implement the ZLD of different modes, be essentially all to process with reuse recirculated water draining as main contents.From operation has been put into
The operational effect of ZLD system from the point of view of. all can obtain preferable water-saving result, some power plant really therefore can accomplish not discharge and appoint
What waste water.However, comparing with international most advanced level, China existing and in the ZLD system built in design rationality, stable
All there is larger gap in the aspects such as property, operational effect.Yet there is a problem of that some have much room for improvement simultaneously.
At present the high slat-containing wastewater of thermal power plant mainly has resin regeneration acid, alkali waste water and a desulfurization wastewater, the most frequently used way
It is that high slat-containing wastewater is used for the stirring of grey storehouse and coal yard spray, but this reuse quality that again can affect lime-ash and coal yard and defeated coal measures
The spray of system runs.In fact this kind of reuse mode does not fundamentally solve the problems, such as the reuse of high slat-containing wastewater, simply marries again
To other system.
Although domestic each power plant desulfurization water quality is different, totally apparently have the characteristics that：1) it is in faintly acid；2) heavy metal
Content is high；3) salinity is high, and chloride ion is high, accelerates corrosion rate；4) contain and give birth to incrustation ion in a large number, contain in recovered water
The easily incrustation ion such as SO42-, CO3-, Ca2+, Mg2+, Ba2+；5) suspension content height, granule are tiny.
For power plant desulfurization waste water, typically in acid (pH4～6), float in 9000～12700mg/L, typically mercurous,
The non-metal contaminants such as the heavy metals such as lead, nickel, zinc and arsenic, fluorine.Because desulfurization wastewater belongs to faintly acid, therefore many heavy metal ion
There is good dissolubility.So, the process of desulfurization wastewater is mainly precipitable with chemistry, mechanical means separating beavy metal and other
Material, such as fluoride, sulphite and sulfate.
The concentration of the desulfurization waste liquor of power plant now, either adopts the high pressure reverse osmosiss such as DTRO, SWRO, or MVR evaporation,
Its common feature be all stock solution need to be softened with sodium hydroxide and sodium carbonate after, then concentrated.Due to desulfurization waste liquor
Calcium ions and magnesium ions comparision contents high, therefore it is higher to soften expense, causes concentrated cost too high.We have developed one kind can be no
The enrichment facility of the desulfurization waste liquor that need to soften.
Content of the invention
The main object of the present invention is to develop a kind of power plant desulfurization waste water to soften enrichment facility.
The present invention is achieved by following technical proposals：
A kind of power plant desulfurization waste water need not soften enrichment facility it is characterised in that including crystallization defecator, high frequency magnetic field
Generator, EDR device；
The desulfurization wastewater of power plant desulphurization system is connected with the import of crystallization defecator, sulfur produced by crystallization defecator
Sour calcium crystal is discharged, and the water out that produces of crystallization defecator is connected with the import of EDR device, and dress is filtered in wherein said crystallization
Put, for the calcium sulfate crystal seed of 1-100 micron on stainless steel multilayer grid plate, filter membrane therein is fixed diameter in a device
Four fluorine ethylene hollow-fibre membranes；
Described high frequency magnetic field generator, is to utilize high frequency generator, and the magnetic field frequency producing high frequency magnetic field is 50KHz-
50MHz；
EDR device dope outlet be divided into two-way, respectively with crystallization defecator and vaporising device is connected, water outlet and
Power plant desulphurization system connects, and wherein includes EDR film group device, EDR film group device is placed in the high frequency magnetic field of high frequency magnetic field generator.
Preferably, a kind of above-mentioned power plant desulfurization waste water need not soften the sulfur on stainless steel multilayer grid plate in enrichment facility
The density of sour calcium crystal seed is 10-20 every square centimeter, and multilamellar grid plate is rotary moveable shape structure around center, and rotating speed is every
Minute 1-10 turns.
Preferably, it is frequently to fall that a kind of above-mentioned power plant desulfurization waste water need not soften the EDR device described in enrichment facility
Pole homogeneous membrane electrodialysis plant, the frequency of falling pole is the 0.5-10 of falling pole time per hour.
Preferably, a kind of above-mentioned power plant desulfurization waste water need not soften the film of four fluorine ethylene hollow-fibre membranes in enrichment facility
A diameter of 0.5-3mm, membrane aperture is 0.1-5 micron.
Beneficial effect：The device structure of the application is simple, easy to operate, and the energy consumption in whole implementation process is low, effect
Rate is high.
Brief description
Fig. 1 the structural representation of present invention
Specific embodiment
Below in conjunction with the accompanying drawings, the enforcement to the present invention illustrates：
Embodiment 1
Structure as shown in Figure 1, makes a power plant desulfurization waste water and need not soften enrichment facility including crystallization filtration dress
Put, high frequency magnetic field generator, EDR device；The desulfurization wastewater of power plant desulphurization system is connected with the import of crystallization defecator, knot
Calcium sulphate crystal produced by brilliant defecator is discharged, and the water out that produces of crystallization defecator is connected with the import of EDR device, its
Described in crystallization defecator, in a device fixed diameter be 1-100 micron calcium sulfate crystal seed in stainless steel multilayer barrier
On plate, filter membrane therein is four fluorine ethylene hollow-fibre membranes；Described high frequency magnetic field generator, is to utilize high frequency generator,
The magnetic field frequency producing high frequency magnetic field is 50KHz-50MHz；The dope outlet of EDR device is divided into two-way, filters dress with crystallization respectively
Put and vaporising device connect, water outlet is connected with power plant desulphurization system, in include EDR film group device, EDR film group device is placed in height
In the high frequency magnetic field of frequency magnetic field generator.
Assemble the power plant desulfurization waste water that treating capacity is 1 ton per hour in the present embodiment and need not soften enrichment facility, crystallized
Filter device, in a device fixed diameter be 10 microns of calcium sulfate crystal seed on a stainless steel multilayer grid plate, density is often to put down
Square centimetre 10, multilamellar grid plate can be rotated around center, and rotating speed is 5 turns per minute.It is filtered into four fluorine ethylene hollows
Fibrous membrane, a diameter of 1.5mm of film, membrane aperture is 1 micron.EDR film group device is placed in high frequency magnetic field, magnetic field frequency is 100KHz.
Frequently pole-reversing homogeneous membrane electrodialysis plant, the frequency of falling pole is, pole 2 times per hour.
One calcium ion content is 9000mg/L, and sulfate radical content is 2000mg/L, and chloride ion content is 25000mg/L's
Desulfurization waste liquor enters our power plant desulfurization waste water and need not soften enrichment facility.The concentrated solution of EDR reaches 20% concentration, and fresh water reaches
0.1%, continuous operation 10 days, no scale formation.Crystallization defecator filters the calcium sulphate crystal purity 99.5% of gained.
Embodiment 2
Theory structure according to Fig. 1, assembling treating capacity is that 1 ton per hour of power plant desulfurization waste water need not soften concentration dress
Put, including crystallization defecator, high frequency magnetic field generator, EDR device.
Crystallization defecator, fixed diameter is 15 microns of calcium sulfate crystal seed in a stainless steel multilayer grid plate in a device
On, density is 10 every square centimeter, and multilamellar grid plate can be rotated around center, and rotating speed is 10 turns per minute.Filter
For four fluorine ethylene hollow-fibre membranes, a diameter of 1.2mm of film, membrane aperture is 0.5 micron.EDR film group device is placed in high frequency magnetic field,
Magnetic field frequency is 300KHz.Frequently pole-reversing homogeneous membrane electrodialysis plant, the frequency of falling pole is, pole 4 times per hour.
One calcium ion content is 6000mg/L, and sulfate radical content is 2000mg/L, and chloride ion content is 20000mg/L's
Desulfurization waste liquor enters our power plant desulfurization waste water and need not soften enrichment facility.The concentrated solution of EDR reaches 15% concentration, and fresh water reaches
0.5%, continuous operation 5 days, no scale formation.Crystallization defecator filters the calcium sulphate crystal purity 98% of gained.
Claims (4)
1. a kind of power plant desulfurization waste water need not soften enrichment facility it is characterised in that including crystallization defecator, high frequency magnetic field is sent out
Raw device, EDR device；
The desulfurization wastewater of power plant desulphurization system is connected with the import of crystallization defecator, calcium sulfate produced by crystallization defecator
Crystal is discharged, and the water out that produces of crystallization defecator is connected with the import of EDR device, wherein said crystallization defecator,
In device, for the calcium sulfate crystal seed of 1-100 micron on stainless steel multilayer grid plate, filter membrane therein is tetrafluoro to fixed diameter
The dilute hollow-fibre membrane of second；
Described high frequency magnetic field generator, is to utilize high frequency generator, and the magnetic field frequency producing high frequency magnetic field is 50KHz-50MHz；
The dope outlet of EDR device is divided into two-way, is connected with crystallization defecator and vaporising device respectively, water outlet and power plant
Desulphurization system connects, and wherein includes EDR film group device, EDR film group device is placed in the high frequency magnetic field of high frequency magnetic field generator.
2. a kind of power plant desulfurization waste water according to claim 1 need not soften enrichment facility it is characterised in that rustless steel is many
The density of the calcium sulfate crystal seed on layer grid plate is 10-20 every square centimeter, and multilamellar grid plate is rotary moveable around center
Shape structure, rotating speed turns for 1-10 per minute.
3. a kind of power plant desulfurization waste water according to claim 1 need not soften enrichment facility it is characterised in that described
EDR device is frequently pole-reversing homogeneous membrane electrodialysis plant, and the frequency of falling pole is the 0.5-10 of falling pole time per hour.
4. a kind of power plant desulfurization waste water according to claim 1 need not soften enrichment facility it is characterised in that four fluorine ethylenes
The a diameter of 0.5-3mm of film of hollow-fibre membrane, membrane aperture is 0.1-5 micron.
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| CN201611058117.0A CN106477800A (en) | 2016-11-27 | 2016-11-27 | A kind of power plant desulfurization waste water need not soften enrichment facility |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107235597A (en) * | 2017-06-30 | 2017-10-10 | 山东国舜建设集团有限公司 | A kind of nonhomogen-ous nucleation crystallisation handles the method and system of desulfurization wastewater |
| CN107935206A (en) * | 2017-12-11 | 2018-04-20 | 北京鑫佰利科技发展有限公司 | A kind of embrane method selectively removes hard method |
| CN108623050A (en) * | 2017-03-20 | 2018-10-09 | 神华集团有限责任公司 | A kind of processing method and processing system of desulfurization wastewater |
| CN108623063A (en) * | 2017-03-20 | 2018-10-09 | 神华集团有限责任公司 | A kind of processing method and processing system of desulfurization wastewater |
| US11502322B1 (en) | 2022-05-09 | 2022-11-15 | Rahul S Nana | Reverse electrodialysis cell with heat pump |
| US11502323B1 (en) | 2022-05-09 | 2022-11-15 | Rahul S Nana | Reverse electrodialysis cell and methods of use thereof |
| US11855324B1 (en) | 2022-11-15 | 2023-12-26 | Rahul S. Nana | Reverse electrodialysis or pressure-retarded osmosis cell with heat pump |
| US12040517B2 (en) | 2022-11-15 | 2024-07-16 | Rahul S. Nana | Reverse electrodialysis or pressure-retarded osmosis cell and methods of use thereof |
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| CN105110521A (en) * | 2015-08-25 | 2015-12-02 | 杭州蓝然环境技术有限公司 | Cyclic utilization method of desulphurization waste water |
| CN206318829U (en) * | 2016-11-27 | 2017-07-11 | 杭州水处理技术研究开发中心有限公司 | A kind of power plant desulfurization waste water need not soften enrichment facility |
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2016
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Patent Citations (3)
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| CN104478141A (en) * | 2014-12-05 | 2015-04-01 | 杭州水处理技术研究开发中心有限公司 | Power plant flue gas desulfurization wastewater treatment process |
| CN105110521A (en) * | 2015-08-25 | 2015-12-02 | 杭州蓝然环境技术有限公司 | Cyclic utilization method of desulphurization waste water |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108623050A (en) * | 2017-03-20 | 2018-10-09 | 神华集团有限责任公司 | A kind of processing method and processing system of desulfurization wastewater |
| CN108623063A (en) * | 2017-03-20 | 2018-10-09 | 神华集团有限责任公司 | A kind of processing method and processing system of desulfurization wastewater |
| CN108623050B (en) * | 2017-03-20 | 2021-02-05 | 神华集团有限责任公司 | Desulfurization wastewater treatment method and system |
| CN108623063B (en) * | 2017-03-20 | 2021-11-05 | 国家能源投资集团有限责任公司 | Desulfurization wastewater treatment method and system |
| CN107235597A (en) * | 2017-06-30 | 2017-10-10 | 山东国舜建设集团有限公司 | A kind of nonhomogen-ous nucleation crystallisation handles the method and system of desulfurization wastewater |
| CN107935206A (en) * | 2017-12-11 | 2018-04-20 | 北京鑫佰利科技发展有限公司 | A kind of embrane method selectively removes hard method |
| US11502322B1 (en) | 2022-05-09 | 2022-11-15 | Rahul S Nana | Reverse electrodialysis cell with heat pump |
| US11502323B1 (en) | 2022-05-09 | 2022-11-15 | Rahul S Nana | Reverse electrodialysis cell and methods of use thereof |
| US11563229B1 (en) | 2022-05-09 | 2023-01-24 | Rahul S Nana | Reverse electrodialysis cell with heat pump |
| US11611099B1 (en) | 2022-05-09 | 2023-03-21 | Rahul S Nana | Reverse electrodialysis cell and methods of use thereof |
| US11699803B1 (en) | 2022-05-09 | 2023-07-11 | Rahul S Nana | Reverse electrodialysis cell with heat pump |
| US11855324B1 (en) | 2022-11-15 | 2023-12-26 | Rahul S. Nana | Reverse electrodialysis or pressure-retarded osmosis cell with heat pump |
| US12040517B2 (en) | 2022-11-15 | 2024-07-16 | Rahul S. Nana | Reverse electrodialysis or pressure-retarded osmosis cell and methods of use thereof |
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