CN109942152A - A kind of SCR regeneration denitrating catalyst waste water treatment system and processing method - Google Patents
A kind of SCR regeneration denitrating catalyst waste water treatment system and processing method Download PDFInfo
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- CN109942152A CN109942152A CN201910269441.4A CN201910269441A CN109942152A CN 109942152 A CN109942152 A CN 109942152A CN 201910269441 A CN201910269441 A CN 201910269441A CN 109942152 A CN109942152 A CN 109942152A
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- 239000003054 catalyst Substances 0.000 title claims abstract description 38
- 230000008929 regeneration Effects 0.000 title claims abstract description 29
- 238000011069 regeneration method Methods 0.000 title claims abstract description 29
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 26
- 238000003672 processing method Methods 0.000 title abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims abstract description 85
- 238000004062 sedimentation Methods 0.000 claims abstract description 70
- 239000002351 wastewater Substances 0.000 claims abstract description 47
- 238000005273 aeration Methods 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 230000020477 pH reduction Effects 0.000 claims abstract description 29
- 230000007062 hydrolysis Effects 0.000 claims abstract description 26
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 26
- 239000012528 membrane Substances 0.000 claims abstract description 21
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000007599 discharging Methods 0.000 claims abstract description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 42
- 239000010802 sludge Substances 0.000 claims description 33
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 13
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 13
- 239000003814 drug Substances 0.000 claims description 11
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 3
- 239000011790 ferrous sulphate Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 238000003801 milling Methods 0.000 claims description 2
- 125000001741 organic sulfur group Chemical group 0.000 claims description 2
- -1 polypropylene Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims 1
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 229910001385 heavy metal Inorganic materials 0.000 description 8
- 239000010865 sewage Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000011651 chromium Substances 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 5
- 229910052785 arsenic Inorganic materials 0.000 description 5
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 5
- 229910052698 phosphorus Inorganic materials 0.000 description 5
- 239000011574 phosphorus Substances 0.000 description 5
- 229910052720 vanadium Inorganic materials 0.000 description 5
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 5
- 239000005416 organic matter Substances 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 230000001376 precipitating effect Effects 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- 229910052793 cadmium Inorganic materials 0.000 description 3
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229940079593 drug Drugs 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 239000002738 chelating agent Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000005446 dissolved organic matter Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000032696 parturition Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
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- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of SCR regeneration denitrating catalyst waste water treatment system and processing methods, comprising: first order reaction sedimentation basin, second order reaction sedimentation basin, third-order reaction sedimentation basin, cooling tower, hydrolysis acidification pool, sludge-tank, the first aerobic aeration pond, the second aerobic aeration tank, MBR membrane bioreactor, discharge pond and plate and frame filter press.Wherein, the waste water generated in catalyst regeneration process can successively pass through first order reaction sedimentation basin, second order reaction sedimentation basin, third-order reaction sedimentation basin, cooling tower, hydrolysis acidification pool, sludge-tank, the first aerobic aeration pond, aerobic aeration pond and MBR membrane bioreactor, can be emitted by discharging pond after final water quality detection is up to standard.The system footprint is small, handles water height day, and treatment effeciency is efficient, and environmental pollution is small, can effectively dispose the waste water generated during regeneration SCR denitration.
Description
Technical field
The invention belongs to environment protection fields, and in particular to a kind of SCR regeneration denitrating catalyst waste water treatment system and processing side
Method.
Background technique
SCR denitration is to remove the core of nitrogen oxides in coal steam-electric plant smoke, and the quality of performance directly affects cigarette
The efficiency of qi exhaustion nitre, general denitrating catalyst service life only 3 years, catalyst, which is eliminated, later buried disposition or further
Regeneration.
Catalyst regeneration is cleaned can generally neutralize by physics deashing, pressure pulse cleaning, chemical cleaning, ultrasonic cleaning, chemistry,
It is microcosmic except iron, pure water rinse etc. several steps, the waste water generated during these can generate a large amount of heavy metal (such as iron, vanadium,
Aluminium etc.) and non-heavy metal (such as phosphorus, sulphur, arsenic), the country has still been in the research of SCR denitration regenerative wastewater at present
Step section, existing wastewater treatment mostly use bentonite adsorption, not only fail to be effectively treated heavy metal and organic matter in waste water, and
And disposal costs are high, more likely bring secondary pollution to ecological environment.Therefore, for deal carefully with generated in regenerative process it is useless
Water, and state's laws regulation is reached, urgent need studies a kind of efficient SCR regeneration denitrating catalyst waste water treatment system.
Summary of the invention
The technical problem to be solved in the invention is that a large amount of heavy metal can be generated in SCR denitration regenerative wastewater
(such as iron, vanadium, aluminium) and non-heavy metal (such as phosphorus, sulphur, arsenic), biodegradability is poor, and processing difficulty is high, it is therefore desirable to provide one
The efficient SCR regeneration denitrating catalyst waste water treatment system of kind and processing method, can accomplish to take up little area, treatment effeciency height and two
Secondary pollution is small and other effects.
In order to realize goal of the invention, the present invention adopts the following technical scheme:
A kind of SCR regeneration denitrating catalyst waste water treatment system, comprising: first order reaction sedimentation basin, second order reaction sedimentation basin, three-level
Reaction settling basin, cooling tower, hydrolysis acidification pool, sludge-tank, the first aerobic aeration pond, the second aerobic aeration tank, MBR membrane bioreaction
Answer device, discharge pond and plate and frame filter press.Wherein, first order reaction sedimentation basin, second order reaction sedimentation basin, third-order reaction sedimentation basin,
Cooling tower, hydrolysis acidification pool, the first aerobic aeration pond, the second aerobic aeration tank, MBR membrane bioreactor, discharge pond according to
Waste water trend is sequentially connected installation, after plate and frame filter press is then installed on sludge-tank；First order reaction sedimentation basin, second order reaction precipitating
Pond, third-order reaction sedimentation basin, hydrolysis acidification bottom of pond portion are connected by the first sludge pipe with sludge-tank, the first aerobic aeration pond, the
Two aerobic aeration ponds are connected by the second sludge pipe with sludge-tank.
The method for carrying out SCR regeneration denitrating catalyst wastewater treatment using above-mentioned waste water treatment system:
The waste water of production SCR regeneration denitrating catalyst successively passes through first order reaction sedimentation basin, second order reaction sedimentation basin, third-order reaction
Sedimentation basin, cooling tower, hydrolysis acidification pool, sludge-tank, the first aerobic aeration pond, the second aerobic aeration tank and MBR membrane biological reaction
Device can be emitted after final water quality detection is up to standard by discharging pond.The first order reaction sedimentation basin, second order reaction precipitating
Respectively added with corresponding chemicals treatment waste water in pond, third-order reaction sedimentation basin.
The waste water of the production SCR regeneration denitrating catalyst passes through first order reaction sedimentation basin, second order reaction sedimentation basin, three-level
The sludge that reaction settling basin, hydrolysis acidification pool generate is discharged into sludge-tank by the first sludge pipe, by the first aerobic aeration pond, the
The sludge that two aerobic aeration ponds generate is discharged into sludge-tank by the second sludge pipe.
The waste water need to adjust pH to neutrality, can add sulfuric acid or hydrogen-oxygen before entering system by sewage water inlet pipe
Change sodium and carries out pH adjusting.
The medicament being added in the first order reaction sedimentation basin is followed successively by sulfuric acid (H2SO4), hydrogen peroxide (H2O2), ferrous sulfate
(FeSO4), sodium hydroxide (NaOH), polypropylene milling amine (PAM), be stirred to react the time control at 0.8-1 hours, sludge settling
Between control at 1-1.2 hours.Each drug concentration is adjusted according to disparity items, wherein H used2SO4With the mass fraction point of NaOH
Not Wei 60% and 32%, be added H2SO4Purpose with NaOH is to adjust pH value of waste water.
The medicament that the second order reaction sedimentation basin is added is followed successively by NaOH, FeSO4, PAM, be stirred to react the time control exist
0.5-0.6 hours, the sludge settling time controlled at 1-1.2 hours.Each drug concentration can carry out appropriate adjustment according to disparity items.
The medicament that the third-order reaction sedimentation basin is added is followed successively by NaOH, recaptures agent, FeSO4、PAM、H2SO4, it is stirred to react
At 1-1.5 hours, the sludge settling time was controlled at 1-1.2 hours for time control.Each drug concentration can be fitted according to disparity items
Degree adjustment.
Described that recapture agent selection is organic sulfur TMT-15, and it is strong that this recaptures agent sequestering power, precipitate stable, sludge quantity
Less and to stablize, post-processing is simple, and it is in addition without secondary pollution, it is also harmless to ecology.
The cooling tower need to control the waste water temperature after third-order reaction within 40 DEG C -45 DEG C, in order to subsequent sewage
Hydrolysis acidification.
The dischargeable capacity of the hydrolysis acidification pool is 50m3, hydraulic detention time is 0.8-1.2 hours.
First aerobic aeration pond, the second aerobic aeration tank dischargeable capacity be 65m3, and be lasting exposure in 24 hours
Gas.
Both described MBR membrane bioreactors are used in parallel.For the film used for hollow-fibre membrane, the method for operation is perseverance
Pressure, the filtration time of film are 100 minutes, and backwashing time is 4 minutes, and system is by PLC auto-controll operation.
The dischargeable capacity of the sludge-tank is 70m3, sludge has been transported to money after plate and frame filter press is compressed into mud cake in pond
Matter dangerous waste handles unit and carries out professional treatment.
The sludge generated in the MBR membrane bioreactor reaction process can be all back in the first aerobic aeration pond.
The utility model has the advantages that
(1) this waste water treatment system equipment is all made of ground integrated form, can be sequentially connected in a limited space, therefore easy for installation
And take up little area, sewage quantity is handled day up to 200m3。
(2) before biochemical reaction, sewage is handled using third-order reaction, heavy metal removing rate can reach 70%, COD
(COD) removal rate can reach 65%, it is seen that third-order reaction disposal efficiency is higher.
(3) equipment of the present invention is less, therefore even if 24 hours run, needs the member of medicament to be added and arrangement
Work is less, can effectively save manpower and material resources.
(4) the final discharge underwater gold of the present invention, which belongs to, reaches 85% with nonmetallic removal rate, COD (COD)
Removal rate can be to 90%, and other kinds index can reach national statutory emissions regulations.
Detailed description of the invention
Fig. 1 is SCR regeneration denitrating catalyst waste water treatment system figure.
Wherein, 1- first order reaction sedimentation basin, 2- second order reaction sedimentation basin, 3- third-order reaction sedimentation basin, 4- cooling tower, 5- water
Solve acidification pool, 6- sludge-tank, the first aerobic aeration of 7- pond, the aerobic aeration tank 8- second, 9 ﹑ 10-MBR membrane bioreactors, 11-
Pond is discharged, 12- plate and frame filter press, 13- sewage water inlet pipe, (first order reaction precipitates water into second order reaction to the first water outlet of 14-
Sedimentation basin), the second water outlet of 15- (second order reaction precipitates water into third-order reaction sedimentation basin), (second level is anti-for 16- third water outlet
Water should be precipitated into cooling tower), the 4th water outlet of 17- (hydrolysis acidification water into aerobic aeration pond 1), the 5th water outlet of 18- is (good
1 water of oxygen aeration tank is into-MBR membrane bioreactor), the 6th water outlet of 19-, the first sludge pipe of 20- (one, two, three reaction precipitating
Pond and hydrolysis acidification pool sludge enter sludge-tank by the first sludge pipe), (aerobic aeration pond sludge passes through the second sludge pipe of 21-
Second sludge pipe enters sludge-tank), 22- mud discharging mouth.
Specific embodiment
The present invention will be further described in detail with reference to the accompanying drawings and detailed description, rather than to limit of the invention
System.
Embodiment 1
A kind of SCR regeneration denitrating catalyst waste water treatment system, as shown in Figure 1, comprising: first order reaction sedimentation basin, second order reaction
Sedimentation basin, third-order reaction sedimentation basin, cooling tower, hydrolysis acidification pool, sludge-tank, the first aerobic aeration pond, the second aerobic aeration tank,
MBR membrane bioreactor, discharge pond and plate and frame filter press；Wherein, first order reaction sedimentation basin, second order reaction sedimentation basin, three-level
Reaction settling basin, cooling tower, hydrolysis acidification pool, the first aerobic aeration pond, the second aerobic aeration tank, MBR membrane bioreactor, row
Discharge water pond according to waste water trend be sequentially connected installation, after plate and frame filter press is then installed on sludge-tank；First order reaction sedimentation basin, second level
Reaction settling basin, third-order reaction sedimentation basin, hydrolysis acidification bottom of pond portion are connected by the first sludge pipe with sludge-tank, the first aerobic exposure
Gas pond, the second aerobic aeration tank are connected by the second sludge pipe with sludge-tank.The dischargeable capacity of hydrolysis acidification pool is 50m3, first
Aerobic aeration pond, the second aerobic aeration tank dischargeable capacity be 65m3, the dischargeable capacity of sludge-tank is 70m3。
Waste water source to be processed has run the waste water of the board-like catalyst regeneration of 24000H from power plant, Datang group, in waste water
Initial COD value is 1197mg/L, and containing a large amount of metals with it is nonmetallic.
Specific step is as follows for waste water treatment system operation:
(1) a series of waste water in SCR denitration regenerative process enter first order reaction sedimentation basin 1 by sewage water inlet pipe 13
In, by adding sulfuric acid regulating water quality pH to 3.0, then add hydrogen peroxide (H2O2), ferrous sulfate (FeSO4), the two molar ratio
For 6:1, after flocculation stirring reaches 0.4H, NaOH is added, adjusts back the pH value of waste water to neutrality 7.0, and then molysite is made to generate alumen ustum,
Continue to add PAM(mass fraction to be 0.01%), by the flocculation of PAM, so that alumen ustum becomes larger and forms largely cotton-shaped sink
Starch.Sediment is entered in sludge-tank by the first sludge pipe, and waste water is then further lifted into second order reaction sedimentation basin；
(2) it after waste water enters second order reaction sedimentation basin, adds sodium hydroxide (NaOH), pH to 10.9 one-tenth alkalinity of regulating water quality, it
After continue to add FeSO4, PAM carry out coagulating sedimentation, wherein FeSO4It is respectively 0.4% He with mass fraction used by PAM
0.004%, volume ratio 1:1 handle first order reaction with this and precipitate remaining floccule.Sediment is entered by the first sludge pipe
In sludge-tank, third-order reaction sedimentation basin is entered after waste water lifting；
(3) it further adds NaOH and accurately adjusts pH value to 10.5 or so, then add heavy metal chelating agent, FeSO4It carries out anti-
It answers, heavy metal chelating agent used, FeSO4Mass fraction is respectively 1.2% and 1.3%, and volume ratio 2:3 passes through after forming precipitating
Adding PAM(mass fraction is 0.004%), alumen ustum to be become larger, and accelerate to precipitate, further to remove water pollutant.Sediment
Entered in sludge-tank by sludge pipe 1, is then entered in cooling tower after waste water lifting；
(4) cooling tower is opened, after waste water enters, discharge coolant-temperature gage need to be lower than 40 DEG C, and waste water can just travel further into hydrolysis later
In acidification pool；If temperature is lower after third-order reaction does not influence subsequent biological respinse, waste water can be not passed through cooling tower.
(5) non-solubility organic matter in original waste water is changed into dissolved organic matter by the effect of hydrolysis acidification, for
The organic matter of wherein difficult for biological degradation is mainly changed into the organic matter of easily biological-degradable by industrial wastewater, improves giving birth to for waste water
The property changed, therefore hydrolysis acidification bacterium need to have been cultivated in advance, which (can be commercially available, the present invention by commercial sources
In be purchased from Mr. Yu sewage treatment plant), effect be promote water in COD (COD) removal, waste water is in hydrolysis acidification pool
It can enter in aerobic tank after middle stop 1.2H；
(6) to extend hydraulic detention time of the waste water in aerobic aeration pond, therefore 2 aerobic tanks, respectively 65m are set3, and
It was aerated for 24 hours, hydraulic detention time of the waste water in aerobic tank is 10H, and waste water can travel further into MBR biomembrane later
Reactor.
(7) MBR film has good crown_interception, and waste water can effectively realize mud-water separation after membrane module filters, and
Effluent quality is significantly improved, treated, and water can enter discharge pond after detection is up to standard, can arrange later by city planting ductwork
It runs out, also can be used as middle water is further industrial utilization.
Can be seen that the system from the Tables 1 and 2 in example 1 can reach 90% to COD removal rate in board-like containing wastewater from catalyst,
And final water quality discharge water can reach national legal requirements, it is seen that the system can effectively deal with SCR regeneration denitration catalyst really
Agent waste water.
COD measured value of 1 waste water of table in each equipment of system
| COD measured value | Blank | First order reaction sedimentation basin | Second order reaction sedimentation basin | Third-order reaction sedimentation basin | Hydrolysis acidification pool | Aerobic aeration pond 1 | Aerobic aeration pond 2 | MBR membrane bioreactor |
| mg/L | 362.54 | 115.54 | 123.50 | 143.42 | 153.38 | 175.29 | 151.39 | 32.84 |
Table 2 discharges each water quality indicator in pond and detected value
| Detection project | Detected value (mg/L) | Emission limit (mg/L) |
| pH | 7.06 | 6-9 |
| COD (COD) | 32.84 | 100 |
| Ammonia nitrogen | 4.6 | 40 |
| Total phosphorus | 0.22 | 2.0 |
| Suspended matter (SS) | 28 | 70 |
| Total zinc | 0.41 | 2.0 |
| Total copper | 0.10 | 0.3 |
| Total cadmium | 0.02 | 0.1 |
| Total chromium | 0.27 | 1.5 |
| Cr VI | 0.18 | 0.5 |
| Total vanadium | 0.24 | 1.0 |
| Total lead | 0.17 | 0.5 |
| Total arsenic | 0.04 | 0.2 |
| Total mercury | 0.01 | 0.03 |
Embodiment 2
The regenerated spent catalyst of the batch is originated from the cellular catalyst that power plant, Guo electricity group has run 24000H.In waste water
Initial COD value is 1508mg/L, equally containing a large amount of metals with it is nonmetallic.
It is similar with example 1 that waste water treatment system runs specific steps.
As can be seen from tables 3 and 4 that the system can reach 91% to COD removal rate in board-like containing wastewater from catalyst, and final
Each Testing index of water quality is below emission limit, it is seen that the process cellular catalyst is also effective.
COD measured value of 3 waste water of table in each equipment of system
| COD measured value | Blank | First order reaction sedimentation basin | Second order reaction sedimentation basin | Third-order reaction sedimentation basin | Hydrolysis acidification pool | Aerobic aeration pond 1 | Aerobic aeration pond 2 | MBR membrane bioreactor |
| mg/L | 462.35 | 139.44 | 115.54 | 151.39 | 147.41 | 175.29 | 139.44 | 43.78 |
Table 4 discharges each water quality indicator in pond and detected value
| Detection project | Detected value (mg/L) | Emission limit (mg/L) |
| pH | 6.87 | 6-9 |
| COD (COD) | 43.78 | 100 |
| Ammonia nitrogen | 9.4 | 40 |
| Total phosphorus | 0.18 | 2.0 |
| Suspended matter (SS) | 31 | 70 |
| Total zinc | 0.18 | 2.0 |
| Total copper | 0.02 | 0.3 |
| Total cadmium | 0.04 | 0.1 |
| Total chromium | 0.63 | 1.5 |
| Cr VI | 0.16 | 0.5 |
| Total vanadium | 0.37 | 1.0 |
| Total lead | 0.29 | 0.5 |
| Total arsenic | 0.01 | 0.2 |
| Total mercury | 0.01 | 0.03 |
Embodiment 3
The regenerated spent catalyst of the batch is originated from the corrugated catalyst that power plant, Datang group has run 24000H.In waste water
Initial COD value is 1353mg/L, equally containing a large amount of metals with it is nonmetallic.
It is similar with example 1 that waste water treatment system runs specific steps.
From table 5 and table 6 as can be seen that the system can reach 92% to COD removal rate in board-like containing wastewater from catalyst, final water
Each Testing index of matter is also below emission limit, and it is also effective for showing that the system handles corrugated catalyst.
COD measured value of 5 waste water of table in each equipment of system
| COD measured value | Blank | First order reaction sedimentation basin | Second order reaction sedimentation basin | Third-order reaction sedimentation basin | Hydrolysis acidification pool | Aerobic aeration pond 1 | Aerobic aeration pond 2 | MBR membrane bioreactor |
| mg/L | 332.49 | 79.06 | 90.92 | 126.49 | 205.56 | 209.51 | 167.48 | 28.16 |
Table 6 discharges each water quality indicator in pond and detected value
| Detection project | Detected value (mg/L) | Emission limit (mg/L) |
| pH | 7.14 | 6-9 |
| COD (COD) | 32.16 | 100 |
| Ammonia nitrogen | 10.4 | 40 |
| Total phosphorus | 0.28 | 2.0 |
| Suspended matter (SS) | 19 | 70 |
| Total zinc | 0.17 | 2.0 |
| Total copper | 0.07 | 0.3 |
| Total cadmium | 0.03 | 0.1 |
| Total chromium | 0.43 | 1.5 |
| Cr VI | 0.04 | 0.5 |
| Total vanadium | 0.31 | 1.0 |
| Total lead | 0.18 | 0.5 |
| Total arsenic | 0.04 | 0.2 |
| Total mercury | 0.01 | 0.03 |
Claims (10)
1. a kind of SCR regeneration denitrating catalyst waste water treatment system, it is characterised in that: including first order reaction sedimentation basin (1), second level
Reaction settling basin (2), third-order reaction sedimentation basin (3), cooling tower (4), hydrolysis acidification pool (5), sludge-tank (6), the first aerobic exposure
Gas pond (7), the second aerobic aeration tank (8), MBR membrane bioreactor (9,10), discharge pond (11) and plate and frame filter press (12)；
Wherein, first order reaction sedimentation basin (1), second order reaction sedimentation basin (2), third-order reaction sedimentation basin (3), cooling tower (4), hydrolysis acidification
Pond (5), the first aerobic aeration pond (7), the second aerobic aeration tank (8), MBR membrane bioreactor (9,10), discharge pond (11)
It is sequentially connected installation according to waste water trend, after plate and frame filter press (12) is then installed on sludge-tank (6)；First order reaction sedimentation basin (1),
Second order reaction sedimentation basin (2), third-order reaction sedimentation basin (3), hydrolysis acidification pool (5) bottom pass through the first sludge pipe (20) and sludge
Pond (6) is connected, and the first aerobic aeration pond (7), the second aerobic aeration tank (8) pass through the second sludge pipe (21) and sludge-tank (6) phase
Even.
2. a kind of SCR regeneration denitrating catalyst waste water treatment system according to claim 1, it is characterised in that: the MBR
Membrane bioreactor be it is used in parallel, for the film used for hollow-fibre membrane, the method for operation is constant pressure, and system is automatically controlled by PLC
Operation.
3. a kind of SCR regeneration denitrating catalyst wastewater treatment method, it is characterised in that: production SCR regeneration denitrating catalyst gives up
Water successively passes through first order reaction sedimentation basin (1), second order reaction sedimentation basin (2), third-order reaction sedimentation basin (3), cooling tower (4), water
Solve acidification pool (5), sludge-tank (6), the first aerobic aeration pond (7), the second aerobic aeration tank (8) and MBR membrane bioreactor (9,
10) it can be emitted by discharging pond after, final water quality detection is up to standard；Waste water is anti-by first order reaction sedimentation basin (1), second level
The sludge for answering sedimentation basin (2), third-order reaction sedimentation basin (3), hydrolysis acidification pool (5) to generate is discharged into dirt by the first sludge pipe (20)
Mud sump (6) is arranged by the sludge that the first aerobic aeration pond (7), the second aerobic aeration tank (8) generate by the second sludge pipe (21)
Enter sludge-tank (6)；The first order reaction sedimentation basin (1), second order reaction sedimentation basin (2), in third-order reaction sedimentation basin (3) added with place
Manage the medicament of waste water.
4. a kind of SCR regeneration denitrating catalyst wastewater treatment method according to claim 3, it is characterised in that: described useless
Before water enters system, sulfuric acid need to be added or wastewater pH is adjusted to neutrality by sodium hydroxide.
5. a kind of SCR regeneration denitrating catalyst wastewater treatment method according to claim 3, it is characterised in that: described one
The medicament being added in order reaction sedimentation basin (1) is followed successively by sulfuric acid, hydrogen peroxide, ferrous sulfate, sodium hydroxide, polypropylene milling amine, stirs
Reaction time control is mixed at 0.8-1 hours, the sludge settling time controlled at 1-1.2 hours.
6. a kind of SCR regeneration denitrating catalyst wastewater treatment method according to claim 3, it is characterised in that: described two
The medicament that order reaction sedimentation basin sequentially adds is NaOH, FeSO4, PAM, be stirred to react time control at 0.5-0.6 hours, sludge
Sedimentation time controlled at 1-1.2 hours.
7. a kind of SCR regeneration denitrating catalyst wastewater treatment method according to claim 3, it is characterised in that: described three
The medicament sequentially added in order reaction sedimentation basin is NaOH, recaptures agent, FeSO4、PAM、H2SO4, time control is stirred to react in 1-
1.5 hours, the sludge settling time controlled at 1-1.2 hours.
8. a kind of SCR regeneration denitrating catalyst wastewater treatment method according to claim 7, it is characterised in that: described heavy
That catch agent selection is organic sulfur TMT-15.
9. a kind of SCR regeneration denitrating catalyst waste water treatment system according to claim 3, it is characterised in that: described cold
But tower controls the waste water temperature after third-order reaction within 40 DEG C -45 DEG C.
10. a kind of SCR regeneration denitrating catalyst waste water treatment system according to claim 3, it is characterised in that: the water
The dischargeable capacity for solving acidification pool is 50m3, hydraulic detention time is 0.8-1.2 hours.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111499120A (en) * | 2020-05-27 | 2020-08-07 | 大唐南京环保科技有限责任公司 | Treatment system and method for denitration catalyst regeneration wastewater |
| CN115159780A (en) * | 2022-07-22 | 2022-10-11 | 江苏美科太阳能科技股份有限公司 | Green and efficient large-size ultrathin monocrystalline silicon wafer wastewater treatment method |
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| CN103613252A (en) * | 2013-12-08 | 2014-03-05 | 上海海洋大学 | Device and process for treating photovoltaic organic wastewater |
| CN209989208U (en) * | 2019-04-04 | 2020-01-24 | 大唐南京环保科技有限责任公司 | SCR regeneration denitration catalyst effluent disposal system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103613252A (en) * | 2013-12-08 | 2014-03-05 | 上海海洋大学 | Device and process for treating photovoltaic organic wastewater |
| CN209989208U (en) * | 2019-04-04 | 2020-01-24 | 大唐南京环保科技有限责任公司 | SCR regeneration denitration catalyst effluent disposal system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111499120A (en) * | 2020-05-27 | 2020-08-07 | 大唐南京环保科技有限责任公司 | Treatment system and method for denitration catalyst regeneration wastewater |
| CN115159780A (en) * | 2022-07-22 | 2022-10-11 | 江苏美科太阳能科技股份有限公司 | Green and efficient large-size ultrathin monocrystalline silicon wafer wastewater treatment method |
| CN115159780B (en) * | 2022-07-22 | 2023-11-21 | 江苏美科太阳能科技股份有限公司 | Green and efficient large-size ultrathin monocrystalline silicon piece wastewater treatment method |
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