CN108164072A - A kind of device and methods for using them of microwave-hypergravity Combined Treatment Rare Earth Production ammonia nitrogen waste water - Google Patents
A kind of device and methods for using them of microwave-hypergravity Combined Treatment Rare Earth Production ammonia nitrogen waste water Download PDFInfo
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- CN108164072A CN108164072A CN201810033947.0A CN201810033947A CN108164072A CN 108164072 A CN108164072 A CN 108164072A CN 201810033947 A CN201810033947 A CN 201810033947A CN 108164072 A CN108164072 A CN 108164072A
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- waste water
- ammonia nitrogen
- hypergravity
- rare earth
- packed bed
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- 239000002351 wastewater Substances 0.000 title claims abstract description 79
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 45
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000007788 liquid Substances 0.000 claims abstract description 69
- 239000007789 gas Substances 0.000 claims abstract description 37
- 238000001802 infusion Methods 0.000 claims abstract description 35
- 238000010521 absorption reaction Methods 0.000 claims abstract description 16
- 239000002912 waste gas Substances 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 24
- 238000012545 processing Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000003344 environmental pollutant Substances 0.000 claims description 7
- 231100000719 pollutant Toxicity 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 26
- 229910021529 ammonia Inorganic materials 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000004065 wastewater treatment Methods 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- 238000009388 chemical precipitation Methods 0.000 description 2
- 238000005660 chlorination reaction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- VCOYRKXQRUGBKS-UHFFFAOYSA-N N.[Cl] Chemical compound N.[Cl] VCOYRKXQRUGBKS-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
Classifications
-
- 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
- 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
-
- 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
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/302—Treatment of water, waste water, or sewage by irradiation with microwaves
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
Abstract
The present invention relates to a kind of device and methods for using thems of microwave hypergravity Combined Treatment Rare Earth Production ammonia nitrogen waste water, belong to ammonia nitrogenous wastewater treatment technology field.Waste water bottom of gullet connects micro-wave oven liquid inlet with woven hose by infusion pump in the device, micro-wave oven bottom-heated liquid outlet connects the sparge pipe of cross_flow rotating packed bed side centre position setting by infusion pump with woven hose, cross_flow rotating packed bed is internally provided with rotating disk, rotating disk takes out connection motor by rotating, guipure is equipped between rotating disk, gas vent is equipped at the top of cross_flow rotating packed bed, bottom is equipped with liquid outlet and side bottom is equipped with air intake, gas vent connects waste gas absorption bottle by air outlet pipe, liquid outlet connects absorbing liquid sink by outlet tube, air intake connects air blower by air inlet pipe.The present invention was not only heated ammonia nitrogen waste water solution using microwave fast heating advantage, but also strengthen transmission effect feature using hypergravity to preferably improve stripping rate and reduce energy consumption.
Description
Technical field
The present invention relates to a kind of device and methods for using thems of microwave-hypergravity Combined Treatment Rare Earth Production ammonia nitrogen waste water, belong to
In ammonia nitrogenous wastewater treatment technology field.
Background technology
Rare earth ammonia nitrogen waste water is that a kind of water is big, complicated component, and hardness is high, and ammonia-nitrogen content is high, high pollution, intractable work
Industry waste water, a large amount of ammonia nitrogen waste waters can be caused body eutrophication into water body, be led to water quality deterioration by direct emission, discharge
It is severely restricted.The ammonia nitrogen waste water generated during rare-earth smelting mainly has 2 kinds：1. amine wastewater of sulphuric acid：It is mainly derived from life
Carbonated rare earth and Rare Earth Separation ammonia saponification process are produced, major pollutants are ammonium sulfate, and ammonia nitrogen concentration about in 8000mg/L, is gone back
Contain a large amount of Ca2+, Mg2+、Cl-Impurity are waited, the ingredient of waste water is more complicated；2. chlorine ammonia waste water：It is mainly derived from rare earth extraction
Separation production process, major pollutants are ammonium chloride, and ammonia nitrogen concentration is in 10000~15000mg/L, due to used in production process
Water for pure water, therefore other impurities are seldom in waste water.Therefore scientific and reasonable wastewater processing technology and resource recycling
Technology has become an important factor in order of rare-earth trade sustainable development.
The method of processing RE waste water middle and high concentration ammonia nitrogen is more at present, such as evaporation concentration method, break point chlorination, electric osmose
Analysis method, chemical precipitation method, ion-exchange, biological treatment, alkaline ammonia still process method（Air stripping method and steam blow-off method）Deng, but
It all has some disadvantages, for example ammonia still process concentration method cost is higher, low concentration wastewater need to be concentrated first, product sales difficulty；
Break point chlorination processing Low Concentration Ammonia Containing Wastewater effect is good, but to prevent secondary pollution from generating；Although embrane method recycles ammonia nitrogen waste water
Effect is preferable, but operating cost is higher, and treating capacity is limited；Chemical precipitation method phosphate cost is higher, and therefore, these types of method is still
It is in conceptual phase.And air stripping method is a kind of relatively simple widely used method, generally uses stripping pond and stripping tower
Two kind equipments, exist and take up a large area, low separation efficiency, and easily cause secondary pollution.
Invention content
For the above-mentioned prior art there are the problem of and deficiency, it is dilute that the present invention provides a kind of microwave-hypergravity Combined Treatment
The device and methods for using them of autochthonal production ammonia nitrogen waste water.The present invention in order to preferably improve stripping rate and reduce energy consumption, first with
The characteristics of quick heating advantage of microwave heats ammonia nitrogen waste water solution, next strengthens transmission effect using hypergravity, overweight
During power is rotary packed bed, liquid cuts into brin, drop and film by the tear of high speed rotation filler, and flow rate of liquid is in gravitational field
10 times of height, high speed liquid phase fluid are contacted with back flow of gas, greatly enhance gas liquid film mass transfer, compared with traditional reactor
Mass-transfer efficiency improves 1~3 order of magnitude, and is greatly reduced with traditional tower than equipment size.The present invention passes through following skill
Art scheme is realized.
The device of a kind of microwave-hypergravity Combined Treatment Rare Earth Production ammonia nitrogen waste water, including waste water sink, infusion pump, micro-
Wave stove, sparge pipe, cross_flow rotating packed bed, rotating disk, guipure, rotation pumping, motor, liquid outlet, gas vent, exhaust gas are inhaled
Bottle, air intake, air blower, absorbing liquid sink, woven hose, air inlet pipe, air outlet pipe and outlet tube, waste water bottom of gullet is received to pass through
Infusion pump connects micro-wave oven liquid inlet with woven hose, and micro-wave oven bottom-heated liquid outlet is connected by infusion pump with woven hose
The sparge pipe of cross_flow rotating packed bed side centre position setting, cross_flow rotating packed bed are internally provided with rotating disk, rotate
Disk takes out connection motor by rotating, and guipure is equipped between rotating disk, gas vent, bottom are equipped at the top of cross_flow rotating packed bed
Air intake is equipped with equipped with liquid outlet and side bottom, gas vent connects waste gas absorption bottle, liquid discharge by air outlet pipe
Mouth connects absorbing liquid sink by outlet tube, and air intake connects air blower by air inlet pipe.
Liquid is additionally provided at the liquid inlet of the micro-wave oven bottom-heated liquid outlet connection sparge pipe and the woven hose
Flowmeter.
Thermocouple is equipped in the microwave cavity of the micro-wave oven.
10 or more guipures are equipped between the rotating disk.
The air inlet pipe is equipped with gas flowmeter.
A kind of application process of the device of microwave-hypergravity Combined Treatment Rare Earth Production ammonia nitrogen waste water, specific steps are such as
Under：
Step 1, the Rare Earth Production ammonia nitrogen waste water being placed in waste water sink add in NaOH and adjust pH value 10~14；
It step 2 and then is transported in micro-wave oven according to 1~10L/h by infusion pump and woven hose and heats 1min and make solution temperature
Reach 30~90 DEG C；
Micro-wave oven bottom-heated liquid outlet is transported to hypergravity by step 3 by infusion pump and woven hose according to 1~10L/h
In rotary packed bed sparge pipe, the air velocity 100 being blown into air blower in cross_flow rotating packed bed air intake is controlled
~2000L/h, motor drive the rotating speed of rotating disk rotation to carry out stripping processing, hypergravity rotation filler for 100~1500r/min
Water of the gas in waste gas absorption bottle or acid that bed top gas exports out absorb, the liquid of cross_flow rotating packed bed bottom
If the below standard return processing of waste water in outlet, until ammonia nitrogen in waste water reaches《Rare-earth industry pollutant emission standard》Then it carries out
Discharge.
11000~20000mg/L of ammonia nitrogen concentration in the step 1 middle rare earth production ammonia nitrogen waste water.
The beneficial effects of the invention are as follows：
（1）The present apparatus can quickly heat solution, save time and cost；
（2）The present apparatus can be such that the ammonia of generation is carried over rapidly, be prevented in cross_flow rotating packed bed by the way of air blast
Portion's ammonia is assembled excessively as liquid is discharged together；
（3）Present apparatus cross_flow rotating packed bed is internally provided with the guipure of 10 or more, can greatly increase the mass transfer effect of solution
Rate makes reaction more complete；
（4）This method chooses NaOH and adjusts pH value, and NaOH is not only derived from a wealth of sources, but also at low cost, according to Ca (OH)2Adjust pH
Value, easy fouling and clogging pipeline；
（5）This method utilizes the advantage of microwave fast heating, and heating time is no more than 1min, reduces energy consumption；
（6）This method takes high-gravity technology to handle ammonia nitrogen waste water, and equipment volume is small, and floor space is small, convenient to install and maintain, passes
Matter effect is high, and ammonia aeration rate is high.
Description of the drawings
Fig. 1 is apparatus of the present invention structure diagram.
In figure：1- waste water sinks, 2- infusion pumps I, 3- micro-wave ovens, 4- thermocouples, 5- microwave cavities, 6- fluid flowmeters,
7- liquid inlets, 8- sparge pipes, 9- cross_flow rotating packed beds, 10- rotating disks, 11- guipures, 12- rotations are taken out, 13- motors,
14- liquid outlets, 15- gas vents, 16- waste gas absorption bottles, 17- air intakes, 18- gas flowmeters, 19- air blowers, 20-
Absorbing liquid sink, 21- woven hoses, 22- air inlet pipe, 23- air outlet pipes, 24- outlet tubes, 25- infusion pumps II.
Specific embodiment
With reference to the accompanying drawings and detailed description, the invention will be further described.
Embodiment 1
As shown in Figure 1, the device of the microwave-hypergravity Combined Treatment Rare Earth Production ammonia nitrogen waste water, including waste water sink 1, infusion
12, motor 13, liquid outlet are taken out in pump, micro-wave oven 3, sparge pipe 8, cross_flow rotating packed bed 9, rotating disk 10, guipure 11, rotation
14th, gas vent 15, waste gas absorption bottle 16, air intake 17, air blower 19, absorbing liquid sink 20, woven hose 21, air inlet pipe
22nd, air outlet pipe 23 and outlet tube 24,1 bottom of waste water sink pass through infusion pump（Infusion pump I 2）Micro-wave oven 3 is connected with woven hose 21
Liquid inlet, 3 bottom-heated liquid outlet of micro-wave oven pass through infusion pump（Infusion pump II 25）Hypergravity rotation is connected with woven hose 21
Turn the sparge pipe 8 of 9 side centre position of packed bed setting, cross_flow rotating packed bed 9 is internally provided with rotating disk 10, rotating disk 10
12 connection motors 13 are taken out by rotating, guipure 11 is equipped between rotating disk 10,9 top of cross_flow rotating packed bed goes out equipped with gas
Mouth 15, bottom are equipped with liquid outlet 14 and side bottom is equipped with air intake 17, and gas vent 15 is connected by air outlet pipe 23
Waste gas absorption bottle 16, liquid outlet 14 connect absorbing liquid sink 20 by outlet tube 24, and air intake 17 is connected by air inlet pipe 22
Connect air blower 19.
Wherein it is additionally provided at the liquid inlet 7 of 3 bottom-heated liquid outlet of micro-wave oven connection sparge pipe 8 and the woven hose 21
Fluid flowmeter 6；Thermocouple 4 is equipped in the microwave cavity 5 of micro-wave oven 3；10 or more guipures 11 are equipped between rotating disk 10；Air inlet
Pipe 22 is equipped with gas flowmeter 18.
The application process of the device of the microwave-hypergravity Combined Treatment Rare Earth Production ammonia nitrogen waste water, is as follows：
Step 1, the Rare Earth Production ammonia nitrogen waste water being placed in waste water sink 1（Ammonia nitrogen concentration in Rare Earth Production ammonia nitrogen waste water
11000mg/L）It adds in NaOH and adjusts pH value 10.5；
It step 2 and then is transported in micro-wave oven 3 according to 3L/h by infusion pump and woven hose 21 and heats 1min and reach solution temperature
To 90 DEG C；
3 bottom-heated liquid outlet of micro-wave oven is transported to hypergravity rotation by step 3 by infusion pump and woven hose 21 according to 3L/h
In the sparge pipe 8 for turning packed bed 9, the air stream being blown into air blower 19 in 9 air intake 17 of cross_flow rotating packed bed is controlled
Fast 1600L/h, motor 13 drive the rotating speed that rotating disk 10 rotates to carry out stripping processing, hypergravity rotation filler for 1200r/min
Water of the gas in waste gas absorption bottle 16 or acid of 9 top gas of bed outlet 15 out absorb, 9 bottom of cross_flow rotating packed bed
If liquid outlet 14 in waste water below standard return processing, until ammonia nitrogen in waste water reaches《Rare-earth industry pollutant emission standard》
Then it is discharged.
The present embodiment ammonia removal rate reaches 99.8%, and the ammonia nitrogen waste water ＜ 25mg/L finally discharged reach《Rare-earth industry is dirty
Contaminate object discharge standard》.
Comparative example
By Rare Earth Production ammonia nitrogen waste water（Ammonia nitrogen concentration 11000mg/L in Rare Earth Production ammonia nitrogen waste water）It adds in NaOH and adjusts pH value
10.5 directly using plate separation tower of the prior art, and ammonia removal rate reaches 99.2%, the ammonia nitrogen waste water ＜ finally discharged
100mg/L, compared with the present embodiment, this method is saved time and cost by way of quickly heating, and increases the mass transfer of solution
Efficiency makes mass transfer effect high, and ammonia aeration rate is high.
Embodiment 2
As shown in Figure 1, the device of the microwave-hypergravity Combined Treatment Rare Earth Production ammonia nitrogen waste water, including waste water sink 1, infusion
12, motor 13, liquid outlet are taken out in pump, micro-wave oven 3, sparge pipe 8, cross_flow rotating packed bed 9, rotating disk 10, guipure 11, rotation
14th, gas vent 15, waste gas absorption bottle 16, air intake 17, air blower 19, absorbing liquid sink 20, woven hose 21, air inlet pipe
22nd, air outlet pipe 23 and outlet tube 24,1 bottom of waste water sink pass through infusion pump（Infusion pump I 2）Micro-wave oven 3 is connected with woven hose 21
Liquid inlet, 3 bottom-heated liquid outlet of micro-wave oven pass through infusion pump（Infusion pump II 25）Hypergravity rotation is connected with woven hose 21
Turn the sparge pipe 8 of 9 side centre position of packed bed setting, cross_flow rotating packed bed 9 is internally provided with rotating disk 10, rotating disk 10
12 connection motors 13 are taken out by rotating, guipure 11 is equipped between rotating disk 10,9 top of cross_flow rotating packed bed goes out equipped with gas
Mouth 15, bottom are equipped with liquid outlet 14 and side bottom is equipped with air intake 17, and gas vent 15 is connected by air outlet pipe 23
Waste gas absorption bottle 16, liquid outlet 14 connect absorbing liquid sink 20 by outlet tube 24, and air intake 17 is connected by air inlet pipe 22
Connect air blower 19.
Wherein it is additionally provided at the liquid inlet 7 of 3 bottom-heated liquid outlet of micro-wave oven connection sparge pipe 8 and the woven hose 21
Fluid flowmeter 6；Thermocouple 4 is equipped in the microwave cavity 5 of micro-wave oven 3；10 guipures 11 are equipped between rotating disk 10；Air inlet pipe 22
It is equipped with gas flowmeter 18.
The application process of the device of the microwave-hypergravity Combined Treatment Rare Earth Production ammonia nitrogen waste water, is as follows：
Step 1, the Rare Earth Production ammonia nitrogen waste water being placed in waste water sink 1（Ammonia nitrogen concentration in Rare Earth Production ammonia nitrogen waste water
20000mg/L）It adds in NaOH and adjusts pH value 14；
It step 2 and then is transported in micro-wave oven 3 according to 1L/h by infusion pump and woven hose 21 and heats 1min and reach solution temperature
To 30 DEG C；
3 bottom-heated liquid outlet of micro-wave oven is transported to hypergravity rotation by step 3 by infusion pump and woven hose 21 according to 1L/h
In the sparge pipe 8 for turning packed bed 9, the air stream being blown into air blower 19 in 9 air intake 17 of cross_flow rotating packed bed is controlled
Fast 100L/h, motor 13 drive the rotating speed that rotating disk 10 rotates to carry out stripping processing, cross_flow rotating packed bed 9 for 100r/min
Water of the gas in waste gas absorption bottle 16 or acid that top gas outlet 15 comes out absorb, 9 bottom of cross_flow rotating packed bed
If the below standard return processing of waste water in liquid outlet 14, until ammonia nitrogen in waste water reaches《Rare-earth industry pollutant emission standard》So
After discharged.
The present embodiment ammonia removal rate reaches 99.78%, and the ammonia nitrogen waste water ＜ 25mg/L finally discharged reach《Rare-earth industry is dirty
Contaminate object discharge standard》.
Embodiment 3
As shown in Figure 1, the device of the microwave-hypergravity Combined Treatment Rare Earth Production ammonia nitrogen waste water, including waste water sink 1, infusion
12, motor 13, liquid outlet are taken out in pump, micro-wave oven 3, sparge pipe 8, cross_flow rotating packed bed 9, rotating disk 10, guipure 11, rotation
14th, gas vent 15, waste gas absorption bottle 16, air intake 17, air blower 19, absorbing liquid sink 20, woven hose 21, air inlet pipe
22nd, air outlet pipe 23 and outlet tube 24,1 bottom of waste water sink pass through infusion pump（Infusion pump I 2）Micro-wave oven 3 is connected with woven hose 21
Liquid inlet, 3 bottom-heated liquid outlet of micro-wave oven pass through infusion pump（Infusion pump II 25）Hypergravity rotation is connected with woven hose 21
Turn the sparge pipe 8 of 9 side centre position of packed bed setting, cross_flow rotating packed bed 9 is internally provided with rotating disk 10, rotating disk 10
12 connection motors 13 are taken out by rotating, guipure 11 is equipped between rotating disk 10,9 top of cross_flow rotating packed bed goes out equipped with gas
Mouth 15, bottom are equipped with liquid outlet 14 and side bottom is equipped with air intake 17, and gas vent 15 is connected by air outlet pipe 23
Waste gas absorption bottle 16, liquid outlet 14 connect absorbing liquid sink 20 by outlet tube 24, and air intake 17 is connected by air inlet pipe 22
Connect air blower 19.
Wherein it is additionally provided at the liquid inlet 7 of 3 bottom-heated liquid outlet of micro-wave oven connection sparge pipe 8 and the woven hose 21
Fluid flowmeter 6；Thermocouple 4 is equipped in the microwave cavity 5 of micro-wave oven 3；20 guipures 11 are equipped between rotating disk 10；Air inlet pipe 22
It is equipped with gas flowmeter 18.
The application process of the device of the microwave-hypergravity Combined Treatment Rare Earth Production ammonia nitrogen waste water, is as follows：
Step 1, the Rare Earth Production ammonia nitrogen waste water being placed in waste water sink 1（Ammonia nitrogen concentration in Rare Earth Production ammonia nitrogen waste water
16000mg/L）It adds in NaOH and adjusts pH value 12；
It step 2 and then is transported in micro-wave oven 3 according to 10L/h by infusion pump and woven hose 21 and heats 1min and make solution temperature
Reach 80 DEG C；
3 bottom-heated liquid outlet of micro-wave oven is transported to hypergravity by step 3 by infusion pump and woven hose 21 according to 10L/h
In rotary packed bed 9 sparge pipe 8, the air being blown into air blower 19 in 9 air intake 17 of cross_flow rotating packed bed is controlled
Flow velocity 2000L/h, motor 13 drive the rotating speed that rotating disk 10 rotates to carry out stripping processing, hypergravity rotary filling for 1500r/min
Expect that 9 top gas of bed exports 15 water of the gas in waste gas absorption bottle 16 or acid out and absorbs, 9 bottom of cross_flow rotating packed bed
If the below standard return processing of waste water in the liquid outlet 14 in portion, until ammonia nitrogen in waste water reaches《Rare-earth industry pollutant emission mark
It is accurate》Then it is discharged.
The present embodiment ammonia removal rate reaches 99.79%, and the ammonia nitrogen waste water ＜ 25mg/L finally discharged reach《Rare-earth industry is dirty
Contaminate object discharge standard》.
The specific embodiment of the present invention is explained in detail above in association with attached drawing, but the present invention is not limited to above-mentioned
Embodiment, within the knowledge of a person skilled in the art, can also be before present inventive concept not be departed from
Put that various changes can be made.
Claims (7)
1. a kind of device of microwave-hypergravity Combined Treatment Rare Earth Production ammonia nitrogen waste water, it is characterised in that：Including waste water sink
（1）, infusion pump, micro-wave oven（3）, sparge pipe（8）, cross_flow rotating packed bed（9）, rotating disk（10）, guipure（11）, rotation take out
（12）, motor（13）, liquid outlet（14）, gas vent（15）, waste gas absorption bottle（16）, air intake（17）, air blower
（19）, absorbing liquid sink（20）, woven hose（21）, air inlet pipe（22）, air outlet pipe（23）And outlet tube（24）, waste water sink（1）
Bottom passes through infusion pump and woven hose（21）Connect micro-wave oven（3）Liquid inlet, micro-wave oven（3）Bottom-heated liquid outlet passes through
Infusion pump and woven hose（21）Connect cross_flow rotating packed bed（9）The sparge pipe of side centre position setting（8）, hypergravity rotation
Turn packed bed（9）It is internally provided with rotating disk（10）, rotating disk（10）Taken out by rotating（12）Connect motor（13）, rotating disk
（10）Between be equipped with guipure（11）, cross_flow rotating packed bed（9）Top is equipped with gas vent（15）, bottom be equipped with liquid outlet
（14）And side bottom is equipped with air intake（17）, gas vent（15）Pass through air outlet pipe（23）Connect waste gas absorption bottle
（16）, liquid outlet（14）Pass through outlet tube（24）Connect absorbing liquid sink（20）, air intake（17）Pass through air inlet pipe（22）
Connect air blower（19）.
2. the device of microwave according to claim 1-hypergravity Combined Treatment Rare Earth Production ammonia nitrogen waste water, feature exist
In：The micro-wave oven（3）Bottom-heated liquid outlet connects sparge pipe（8）Liquid inlet（7）And the woven hose（21）Place is also
Equipped with fluid flowmeter（6）.
3. the device of microwave according to claim 1-hypergravity Combined Treatment Rare Earth Production ammonia nitrogen waste water, feature exist
In：The micro-wave oven（3）Microwave cavity（5）It is interior to be equipped with thermocouple（4）.
4. the device of microwave according to claim 1-hypergravity Combined Treatment Rare Earth Production ammonia nitrogen waste water, feature exist
In：The rotating disk（10）Between be equipped with 10 or more guipures（11）.
5. the device of microwave according to claim 1-hypergravity Combined Treatment Rare Earth Production ammonia nitrogen waste water, feature exist
In：The air inlet pipe（22）It is equipped with gas flowmeter（18）.
6. a kind of device of microwave according to any one of claims 1 to 5-hypergravity Combined Treatment Rare Earth Production ammonia nitrogen waste water
Application process, it is characterised in that be as follows：
Step 1 is placed on waste water sink（1）In Rare Earth Production ammonia nitrogen waste water add in NaOH adjust pH value 10~14；
Step 2 and then pass through infusion pump and woven hose（21）Micro-wave oven is transported to according to 1~10L/h（3）Middle heating 1min makes molten
Liquid temperature reaches 30~90 DEG C；
Step 3, by micro-wave oven（3）Bottom-heated liquid outlet passes through infusion pump and woven hose（21）It is transported to according to 1~10L/h
Cross_flow rotating packed bed（9）Sparge pipe（8）In, control air blower（19）In be blown into cross_flow rotating packed bed（9）Air
Entrance（17）In 100~2000L/h of air velocity, motor（13）Drive rotating disk（10）The rotating speed of rotation for 100~
1500r/min carries out stripping processing, cross_flow rotating packed bed（9）Top gas exports（15）Gas waste gas absorption out
Bottle（16）In water or acid absorb, cross_flow rotating packed bed（9）The liquid outlet of bottom（14）It is returned if middle waste water is below standard
Processing is returned, until ammonia nitrogen in waste water reaches《Rare-earth industry pollutant emission standard》Then it is discharged.
7. the application process of the device of microwave according to claim 6-hypergravity Combined Treatment Rare Earth Production ammonia nitrogen waste water,
It is characterized in that：11000~20000mg/L of ammonia nitrogen concentration in the step 1 middle rare earth production ammonia nitrogen waste water.
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