CN108275848A - A kind of wastewater treatment integrating device and method - Google Patents
A kind of wastewater treatment integrating device and method Download PDFInfo
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- CN108275848A CN108275848A CN201810259157.4A CN201810259157A CN108275848A CN 108275848 A CN108275848 A CN 108275848A CN 201810259157 A CN201810259157 A CN 201810259157A CN 108275848 A CN108275848 A CN 108275848A
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- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 150
- 230000003647 oxidation Effects 0.000 claims abstract description 103
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 103
- 239000002131 composite material Substances 0.000 claims abstract description 93
- 230000003197 catalytic effect Effects 0.000 claims abstract description 85
- 239000002351 wastewater Substances 0.000 claims abstract description 75
- 239000007788 liquid Substances 0.000 claims abstract description 74
- 238000012545 processing Methods 0.000 claims abstract description 19
- 238000002156 mixing Methods 0.000 claims abstract description 16
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 72
- 239000007789 gas Substances 0.000 claims description 71
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 52
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 49
- 239000001301 oxygen Substances 0.000 claims description 49
- 229910052760 oxygen Inorganic materials 0.000 claims description 49
- 239000000463 material Substances 0.000 claims description 35
- 239000003054 catalyst Substances 0.000 claims description 30
- 238000009826 distribution Methods 0.000 claims description 24
- 239000002101 nanobubble Substances 0.000 claims description 22
- 238000011049 filling Methods 0.000 claims description 14
- 238000005276 aerator Methods 0.000 claims description 12
- 238000013459 approach Methods 0.000 claims description 10
- 238000006555 catalytic reaction Methods 0.000 claims description 9
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 5
- 229910001882 dioxygen Inorganic materials 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 238000011001 backwashing Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 239000008246 gaseous mixture Substances 0.000 claims 1
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- 238000009434 installation Methods 0.000 abstract description 4
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- 150000001875 compounds Chemical class 0.000 description 11
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- 238000004043 dyeing Methods 0.000 description 7
- 230000003068 static effect Effects 0.000 description 7
- 238000005273 aeration Methods 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 6
- -1 hydroxyl radical free radical Chemical class 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
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- 238000010521 absorption reaction Methods 0.000 description 3
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- 241000894006 Bacteria Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
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- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The present invention provides a kind of wastewater treatment integrating device and method, the collecting-tank being sequentially communicated, gas-liquid mixed reactor, composite catalytic oxidation tower and biofilter；The water outlet of gas-liquid mixed reactor is connected to the water inlet of composite catalytic oxidation tower, and the water outlet of composite catalytic oxidation tower is connected to the water inlet of biofilter；The water outlet of biofilter and the water inlet of gas-liquid mixing reactor are connected to collecting-tank respectively.The present invention wastewater treatment process early period by waste water appropriateness oxidation processes, the later stage of processing procedure is handled by biosystem so that the treatment effect and efficiency of waste water greatly improve, and device integrated level is high, and simple installation reduces operating cost.
Description
Technical field
The present invention relates to field of waste water treatment more particularly to a kind of wastewater treatment integrating device and methods.
Background technology
As the modern industry, especially coal chemical industry, petrochemical industry, fine chemistry industry, textile printing and dyeing, medical pesticide, slurrying are made
The rapid development of the industries such as paper, various organic wastewater with difficult degradation thereby are increasing, these waste water generally have pollutant concentration high, malicious
The feature that property is big, biodegradability is poor, serious polluted-water environment are detrimental to health.This kind of industrial wastewater is by conventional object
Change, after biochemical two stage treatment, a large amount of toxic, bio-refractory organic pollutions are still contained in waste water, need further advanced treating
It could qualified discharge standard or reuse requirement.Therefore, exploitation advanced treatment of industrial waste water technology is to water-saving and emission-reducing and environmental protection
It is significant.
For this kind of used water difficult to degradate, domestic and international existing treatment technology includes enhanced biodegradation, coagulation, absorption, film
Separation and high-level oxidation technology etc..Biochemical method speed is slow, needs larger process space, and high to entering water requirement, is discharged
It is not sufficiently stable, and low for some hardly degraded organic substance removal efficiency；Coagulation Method is to hydrophily pollutant and small organic molecule
Removal efficiency is low；Absorption method has pollutant certain selectivity, and needs adsorbent reactivation, there are problems that secondary pollution；Film
Technology can effectively remove most of pollutant in water, but concentrated water process problem and membrane pollution problem restrict the technology in waste water
Application in terms of processing.
High-level oxidation technology aoxidizes water pollutant using the very strong hydroxyl radical free radical of the oxidability generated, makes its process
A series of pilot process, ultimately generate CO2With other inorganic ions.High-level oxidation technology includes catalytic ozonation, photocatalysis
Oxidation, Fenton oxidation, electrochemical oxidation, ultrasonic cavitation, microwave catalysis oxidation and supercritical oxidation etc..
To solve limitation of the single high-level oxidation technology in terms of technology and economy, compound advanced oxidation technology conduct
A kind of effective Sewage advanced treatment technology just receives more and more attention, especially toxic, harmful organic in bio-refractory
Pollutant process field, in rational investment and operating cost, can effective guarantee standard water discharge, be increasingly becoming advanced oxygen
A kind of new trend of change technology, but since compound advanced oxidation technology needs the combination of working procedures, there is also operation at
This height, the bad problem of integrated level.
Therefore, the confinement problems for current compound advanced oxidation technology in terms of technology and economy, it is contemplated that
The early period of processing procedure handles waste water appropriateness oxidation processes, the later stage of processing procedure by biosystem, reduces system operation
Cost.
Invention content
High in order to solve current compound advanced oxidation technology operating cost, integrated level is bad, i.e., in technology and economy side
The confinement problems in face, the present invention provides a kind of wastewater treatment integrating devices, including：The collecting-tank that is sequentially communicated, gas-liquid are mixed
Close reactor, composite catalytic oxidation tower and biofilter；The water outlet of gas-liquid mixed reactor and composite catalytic oxidation tower into
The mouth of a river is connected to, and the water outlet of composite catalytic oxidation tower is connected to the water inlet of biofilter；The water outlet and gas-liquid of biofilter
The water inlet of mixing reactor is connected to collecting-tank respectively.
Preferably, the second nano bubble release is fixed in gas-liquid mixed reactor to carry for generating micro-nano bubble
The solubility of high ozone and oxygen.
Preferably, composite catalytic oxidation tower includes the level-one composite catalytic oxidation tower being sequentially communicated and two level composite catalyzing oxygen
Change tower, gas-liquid mixed reactor is connected to the water inlet of level-one composite catalytic oxidation tower；In level-one composite catalytic oxidation tower under
And be equipped with the first nano bubble release, the first structured filling material layer and the first catalyst filled layer, nano bubble release and
The water outlet of level-one composite catalytic oxidation tower is connected to；Second liquid is equipped in two level composite catalytic oxidation tower from bottom to top to be distributed
Device, gas distributor, the second structured filling material layer and the second catalyst filled layer, second liquid distributor and two level composite catalyzing oxygen
Change the water inlet connection of tower.
Preferably, this wastewater treatment integrating device further includes：Ozone generator, the water inlet of gas-liquid mixed reactor and two
The gas distributor of grade composite catalytic oxidation tower is connected to the gas outlet of ozone generator respectively.
Preferably, biofilter includes the level-one biofilter being sequentially communicated and two stage biological filter tank, level-one biofilter
Water inlet be connected to the water outlet of two level composite catalytic oxidation tower, the water outlet in two stage biological filter tank is connected to collecting-tank；One
Grade is equipped with the first liquid distribution device and the first biological filter bed of material, the first liquid distribution device and one from bottom to top in biofilter
The water inlet connection of grade biofilter；In two stage biological filter tank from bottom to top be equipped with second liquid distribution apparatus, aerator and
The second biological filter bed of material, second liquid distribution apparatus are connected to the water inlet in two stage biological filter tank.
Preferably, this wastewater treatment equipment further includes：Backwashing system, backwashing system includes air compressor machine, discharge bay, anti-
Flush water pump and backwash discharge bay, the backwash air inlet of the backwash air inlet and two stage biological filter tank of level-one biofilter
It is connected to respectively with the air inlet of air compressor machine, the backwash water inlet of level-one biofilter and the backwash water inlet in two stage biological filter tank
Mouthful be connected to respectively with the water outlet of backwash pump, the water inlet of backwash pump is connected to discharge bay, backwash discharge bay with
Discharge bay is connected to two stage biological filter tank.
Preferably, this wastewater treatment equipment further includes：Tail gas breaking plant, level-one composite catalytic oxidation tower and two level are compound
The gas outlet of catalysis oxidizing tower is connected to the air inlet of tail gas breaking plant respectively, the gas outlet of tail gas breaking plant and two level life
The aerator in object filter tank is connected to.
In addition, the present invention also provides a kind of wastewater treatment integrated approach, include the following steps：
In S1, the mixed gas for mixing pending waste water with hydrogen peroxide solution and then being formed with oxygen and ozone
Mixing forms the dissolved air water containing hydrogen peroxide, oxygen and ozone；S2, by dissolved air water by multistage composite catalysis oxidation and then
It is filtered by multi-stage biological；If S3, filtered by multi-stage biological after waste water reach discharge standard, discharge；If not up to
Discharge standard flows back into then by no more than the part of 67% volume in waste water pending in step S1, passes through step S1 successively
After S2, mixed no more than the other parts of 67% volume with the waste water removing after multi-stage biological filtering, and confirm
Whether reach discharge standard, if reaching discharge standard, discharge, if not up to discharge standard, continues to be repeated in step S1
~S3, until reaching discharge standard and discharging.
Preferably, in step S1, the volume flow ratio of pending waste water and mixed gas is 3~10:1；Wherein, ozone
Quality be mixed gas quality 8~10%.
Preferably, in step S1, the volume ratio of pending waste water and hydrogen peroxide solution is 6000~60000：1；Wherein,
In hydrogen peroxide solution, the quality of hydrogen peroxide is the 27.5% of the quality of hydrogen peroxide solution.
The present invention is by the dissolved air water containing hydrogen peroxide, oxygen and ozone that will be formed in gas-liquid mixed reactor, successively
It is degraded by level-one composite catalytic oxidation tower and two level composite catalytic oxidation tower, two level composite catalytic oxidation tower will be left again later
Waste water pass through level-one biofilter and two stage biological filter tank, if the waste water for leaving two stage biological filter tank reaches discharge standard,
Discharge, if not up to discharge standard, by the part for 67% volume being not more than in the waste water for leaving two stage biological filter tank, reflux
Into pending waste water, successively after above-mentioned steps, mixed with other part in the waste water for leaving two stage biological filter tank
And be confirmed whether to reach discharge standard, if reaching discharge standard, discharge, if not up to discharge standard, continues to be repeated in
Above-mentioned steps, until reaching discharge standard and discharging.
In the present invention, the nano bubble release in gas-liquid mixed reactor can generate micro-nano bubble, improve waste water
The solubility of middle ozone and oxygen；It is all made of structured filling material layer in level-one composite catalytic oxidation tower and two level composite catalytic oxidation tower
With the Combination Design of catalyst layer, gas pressure drop can be reduced, improves gas-liquid mass transfer efficiency；Under the effect of the catalyst, hydrogen peroxide
Catalysis ozone decomposes the alkyl radical generated, and the ability of decomposing organic pollutant can be improved；It level-one biofilter can be effectively sharp
With the high concentration dissolved oxygen in the waste water for leaving two level composite catalytic oxidation tower, without aerating system is arranged, two stage biological is filtered
Pond further efficiently uses the high concentration dissolved oxygen in the waste water of level-one biofilter so that using the two stage biological of oxygen aeration
The treatment effeciency in filter tank greatly improves；Meanwhile the biological filter bed of material in level-one biofilter and two stage biological filter tank passes through distribution
The biological flora of different function can remove the total nitrogen in waste water and different organic matters；The present invention fluctuates situation for influent quality,
Two stage biological filter tank water part can also be back to front end collecting-tank, improve system impact resistance, ensured dirty in water inlet
In the case of contaminating the raising of object concentration, stable water outlet is up to standard.
Wastewater treatment integrated approach and device provided by the invention moderately aoxidize waste water in the early period of wastewater treatment process
Processing, the later stage of wastewater treatment process are handled by biosystem so that the obvious processing effect of waste water improves, and treatment effeciency is big
Width increases, and device integrated level is high, and simple installation reduces operating cost, has extensive production applicability.
Description of the drawings
Fig. 1 is the schematic diagram according to the wastewater treatment integrating device of a preferred embodiment of the invention；
Fig. 2 is the flow chart according to the wastewater treatment integrated approach of a preferred embodiment of the invention；
Wherein：
1. collecting-tank；2. intake pump；3. dioxygen water storage tank；4. hydrogen peroxide dosing pump；5. static mixer；6. gas-liquid mixed
Reactor；7. level-one composite catalytic oxidation tower；8. two level composite catalytic oxidation tower；9. ozone generator；10. tail gas destroys dress
It sets；11. level-one biofilter；12. two stage biological filter tank；13. first flowmeter；14. second flowmeter；15. third flowmeter；
16. the 4th flowmeter；17. the first nano bubble release；18. second liquid distributor；19. gas distributor；20. regular fill out
The bed of material；21. catalyst filled layer；22. liquid distribution device；23. the first biological filter bed of material；24. the second nano bubble release；
25. the second biological filter bed of material；26. air compressor machine；27. discharge bay；28. backwash pump；29. aerator；30. backwash water outlet
Pond.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.Implement below
Example is not limited to the scope of the present invention for illustrating the present invention.
Fig. 1 is according to the schematic diagram of the wastewater treatment integrating device of a preferred embodiment of the invention, as shown in Figure 1, originally
Invention provides a kind of wastewater treatment integrating device, including：The collecting-tank 1 that is sequentially communicated, compound is urged at gas-liquid mixed reactor 6
Change oxidizing tower and biofilter；The water outlet of gas-liquid mixed reactor 6 is connected to the water inlet of composite catalytic oxidation tower, compound to urge
The water outlet for changing oxidizing tower is connected to the water inlet of biofilter；The water inlet of the water outlet and gas-liquid mixing reactor of biofilter
Mouth is connected to collecting-tank 1 respectively.
Specifically, the pending waste water in collecting-tank 1 is mixed into hydrogen peroxide, then the mixed gas formed with oxygen and ozone
It is mixed in gas-liquid mixed reactor 6, forms the dissolved air water containing hydrogen peroxide, oxygen and ozone；Dissolved air water passes through composite catalyzing
Oxidizing tower processing, under the effect of the catalyst, ozone and hydrogen peroxide are further converted to alkyl radical, will be difficult to drop in waste water
The pollutant oxygenolysis of solution is water and carbon dioxide or is converted into the degradable small organic molecule of biology；Compound urge will be left
Change the waste water of oxidizing tower by biofilter, biofilter efficiently uses the high concentration dissolving in the water outlet of composite catalytic oxidation tower
Oxygen carries out biofiltration.
Based on above-described embodiment, as shown in Figure 1, gas-liquid mixed reactor 6 is by the second nano bubble release 24, supercharging gas
Pump, booster water pump, dissolving and dissolved air water release composition, the operation operating pressure of gas-liquid mixed reactor 6 is 0.4~
0.5MPa, the scale for generating bubble are 20 nanometers to 10 microns.
Wherein, the second nano bubble release 24 improves the solubility of ozone and oxygen for generating micro-nano bubble.
Based on above-described embodiment, as shown in Figure 1, composite catalytic oxidation tower includes the level-one composite catalytic oxidation being sequentially communicated
Tower 7 and two level composite catalytic oxidation tower 8, gas-liquid mixed reactor 6 are connected to the water inlet of level-one composite catalytic oxidation tower 7；One
It is equipped with nano bubble release 17, the first structured filling material layer 20 and the first catalyst from bottom to top in grade composite catalytic oxidation tower 7
Filled layer 21, the first nano bubble release 17 are connected to the water outlet of level-one composite catalytic oxidation tower；Two level composite catalyzing oxygen
Change and is equipped with second liquid distributor 18, gas distributor 19, the second structured filling material layer 20 and the second catalyst in tower 8 from bottom to top
Filled layer 21, second liquid distributor 18 are connected to the water inlet of two level composite catalytic oxidation tower 8.
Wherein, if the COD (COD) of waste water after level-one composite catalytic oxidation tower be less than 60mg/L or
When B/C (biodegradability) is more than 0.3, it can be directly entered biofilter, need not move through the processing of two level composite catalytic oxidation tower, but
If be unsatisfactory for COD less than 60mg/L or B/C be more than 0.3 when, need to carry out again into two level composite catalytic oxidation tower compound
Three-level composite catalytic oxidation tower need not be generally arranged in oxidation catalysis.
It should be noted that being beneficial in that in the top of structured filling material layer setting catalyst layer：Structured filling material layer
Catalyst layer can be supported, prevents catalyst from falling；The porosity of structured filling material layer is high, gas pressure drop can be reduced, so as to uniform
Ground water distribution gas distribution；The also cleavable larger bubble of structured filling material layer extends gas residence time in composite catalytic oxidation tower,
Increase gas liquid interfacial area, improves the efficiency of gas-liquid mass transfer.
Wherein, the gas distributor 19 inside two level composite catalytic oxidation tower 8 is that one or more microporous aeration discs form,
The material of aeration plate is one kind in fluorubber, titanium alloy, ceramics.
Based on above-described embodiment, as shown in Figure 1, this wastewater treatment integrating device further includes：Ozone generator 9, gas-liquid are mixed
Close the water inlet of reactor 6 and the gas outlet with ozone generator 9 respectively of gas distributor 19 of two level composite catalytic oxidation tower 8
Connection.
Based on above-described embodiment, as shown in Figure 1, biofilter includes the level-one biofilter 11 being sequentially communicated and two level life
The water inlet in object filter tank 12, level-one biofilter 11 is connected to the water outlet of two level composite catalytic oxidation tower 8, two stage biological filter tank
12 water outlet is connected to collecting-tank 1 in level-one biofilter 11 is equipped with the life of the first liquid distribution device 22 and first from bottom to top
Object filter material layer 23, the first liquid distribution device 22 are connected to the water inlet of level-one biofilter 11；In two stage biological filter tank 12 certainly
It is equipped with second liquid distribution apparatus 22, aerator 29 and the second biological filter bed of material 25, second liquid distribution apparatus 22 down
It is connected to the water inlet in two stage biological filter tank 12.
It should be noted that if the COD of the waste water behind level-one biofilter 11 is less than 50mg/L, ammonia nitrogen is less than 2mg/
L, total nitrogen are less than 10mg/L, then need not move through the processing of two stage biological filter tank 12, directly discharged, if but to be unsatisfactory for COD small
In 50mg/L, ammonia nitrogen is less than 2mg/L, when total nitrogen is less than 10mg/L, then needs to carry out biological mistake again into two stage biological filter tank
Filter.
Wherein, the level-one biological filter bed of material and two stage biological filter material layer include respectively aerobic zone and anoxic zone from bottom to top.
Specifically, aerobic zone is first passed through into the waste water of biofilter, by the nitrobacteria in aerobic zone in waste water
Mineralized nitrogen be nitrate anion, while removing the organic matter in waste water, enter anoxic zone later, pass through the denitrification in anoxic zone
Nitrate anion is converted into nitrogen by bacterium.
Based on above-described embodiment, as shown in Figure 1, this wastewater treatment integrating device further includes：Backwashing system, backwash system
System includes air compressor machine 26, discharge bay 27, backwash pump 28 and backwash discharge bay 3027, the backwash of level-one biofilter 11
Air inlet and the backwash air inlet in two stage biological filter tank 12 are connected to the air inlet of air compressor machine 26 respectively, level-one biofilter 11
Backwash water inlet and the backwash water inlet in two stage biological filter tank 12 be connected to respectively with the water outlet of backwash pump 28, instead
The water inlet of flush water pump 28 is connected to discharge bay 27, backwashes discharge bay 3027 and discharge bay 27 and two stage biological filter tank 12 connects
It is logical.
Based on above-described embodiment, as shown in Figure 1, this wastewater treatment integrating device further includes：For holding pending waste water
Collecting-tank 1, the water outlet in two stage biological filter tank 12 and the water inlet of gas-liquid mixing reactor 6 are connected to collecting-tank 1 respectively.
Based on above-described embodiment, as shown in Figure 1, this wastewater treatment integrating device further includes：Tail gas breaking plant 10, level-one
Composite catalytic oxidation tower 7 is connected to the air inlet of tail gas breaking plant 10 respectively with the gas outlet of two level composite catalytic oxidation tower 8,
The gas outlet of tail gas breaking plant 10 is connected to the aerator 29 in two stage biological filter tank 12.
Wherein, tail gas breaking plant 10 is using conventional exhaust gas processing device, can be used catalyst treatment, heat treatment and
Spray-absorption processing.
Based on above-described embodiment, Fig. 2 is the flow according to the wastewater treatment integrated approach of a preferred embodiment of the invention
Figure, as shown in Fig. 2, the present invention also provides a kind of wastewater treatment integrated approaches, including：
In S1, the mixed gas for mixing pending waste water with hydrogen peroxide solution and then being formed with oxygen and ozone
Mixing forms the dissolved air water containing hydrogen peroxide, oxygen and ozone；S2, by dissolved air water by multistage composite catalysis oxidation and then
It is filtered by multi-stage biological；If S3, filtered by multi-stage biological after waste water reach discharge standard, discharge；If not up to
Discharge standard flows back into then by no more than the part of 67% volume in waste water pending in step S1, passes through step S1 successively
After S2, mixed no more than the other parts of 67% volume with the waste water removing after multi-stage biological filtering, and confirm
Whether reach discharge standard, if reaching discharge standard, discharge, if not up to discharge standard, continues to be repeated in step S1
~S3, until reaching discharge standard and discharging.
Specifically, the present embodiment is added to hydrogen peroxide by being dissolved in oxygen and ozone in gas-liquid mixed reactor 6
The mixing of pending waste water, forms the dissolved air water containing hydrogen peroxide, oxygen and ozone, then dissolved air water passes sequentially through to level-one is compound to urge
Change oxidizing tower 7 and two level composite catalytic oxidation tower 8 is degraded, later again passes through the waste water for leaving two level composite catalytic oxidation tower 8
Level-one biofilter 11 and two stage biological filter tank 12.
If the waste water for leaving two stage biological filter tank 12 reaches discharge standard, direct emission；If not up to discharge standard,
By no more than in the return of waste water of 67% volume to pending waste water, repeat the above after step with leave two stage biological before
The waste water in filter tank 12 removes the other parts mixing no more than 67% volume, is discharged again until reaching discharge standard.
Wherein, discharge standard is that COD is less than 50mg/L in waste water, and ammonia nitrogen is less than 2mg/L, and total nitrogen is less than 10mg/L.
The present embodiment processing procedure early period by waste water appropriateness oxidation processes, the later stage of processing procedure passes through biosystem
Processing so that the obvious processing effect of waste water improves, and treatment effeciency is significantly increased, and device integrated level is high, and simple installation reduces
Operating cost has extensive production applicability.
Based on above-described embodiment, in step S1, the volume flow ratio of pending waste water and mixed gas is 3~10:1；
Wherein, the quality of ozone is the 8~10% of the quality of mixed gas.The volume ratio of pending waste water and hydrogen peroxide solution is
6000~60000：1；Wherein, in hydrogen peroxide solution, the quality of hydrogen peroxide is the 27.5% of the quality of hydrogen peroxide solution.Step S1
In, the mass volume ratio into ozone in the mixture of gas-liquid mixed reactor 6 is 15~45mg/L, the quality volume of hydrogen peroxide
Than for 6~60mg/L.
Based on above-described embodiment, 6 specific embodiments about the present invention are given below, are described below in detail：
Embodiment 1
A kind of wastewater treatment integrating device, including：Collecting-tank 1, intake pump 2, dioxygen water storage tank 3, hydrogen peroxide dosing pump 4,
Static mixer 5, gas-liquid mixed reactor 6, level-one composite catalytic oxidation tower 7, two level composite catalytic oxidation tower 8, ozone occur
Device 9, tail gas breaking plant 10, level-one biofilter 11, two stage biological filter tank 12, air compressor machine 26, discharge bay 27, backwash pump
28, aerator 29, backwash discharge bay 30.
The water inlet of intake pump 2 is connect by pipeline with collecting-tank 1, and the water outlet of intake pump 2 is mixed by pipeline and static state
The water inlet of clutch 5 connects, and the water inlet of hydrogen peroxide dosing pump 4 is connect by pipeline with dioxygen water storage tank 3, hydrogen peroxide dosing pump
4 water outlet is connect by pipeline with the dosing mouth of static mixer 5, and the water outlet of static mixer 5 passes through pipeline and gas-liquid
The liquid-inlet of mixing reactor 6 connects, the outlet that the air inlet of gas-liquid mixed reactor 6 passes through pipeline and ozone generator 9
Mouth connects, and first flowmeter 13 is arranged in connecting pipe, the second nano bubble release 24 is arranged in gas-liquid mixed reactor 6,
The first nano bubble release 17 that 6 water outlet of gas-liquid mixed reactor passes through pipeline and 7 bottom of level-one composite catalytic oxidation tower
Connection, the liquid distribution trough 18 that 7 water outlet of level-one composite catalytic oxidation tower passes through pipeline and 8 bottom of two level composite catalytic oxidation tower
The gas outlet of connection, level-one composite catalytic oxidation tower 7 and two level composite catalytic oxidation tower 8 connects with 10 air inlet of tail gas breaking plant
Connect, 10 gas outlet of tail gas breaking plant is connect by pipeline with the aerator 29 in two stage biological filter tank 12, in connecting pipe according to
The 4th flowmeter 16 of secondary setting, the gas distributor 19 of 8 bottom of two level composite catalytic oxidation tower pass through pipeline and ozone generator 9
Gas outlet connection, second flowmeter 14, level-one composite catalytic oxidation tower 7 and two level composite catalytic oxidation are set in connecting pipe
Setting structured filling material layer 20 and catalyst filled layer 21,8 water outlet of two level composite catalytic oxidation tower pass through pipeline and level-one in tower 8
Biofilter 11 water inlet connection, the interior setting liquid distribution device 22 in level-one biofilter 11 and the first biological filter bed of material 23, one
The water outlet of grade biofilter 11 is connect with 12 water inlet of two stage biological filter tank and backwash discharge bay respectively, level-one biofilter
11 and the backwash air inlet in two stage biological filter tank 12 connect with 26 gas outlet of air compressor machine by pipeline, 11 He of level-one biofilter
The backwash water inlet in two stage biological filter tank 12 is connect by pipeline with 28 water outlet of backwash pump, and backwash pump 28 is intake
Mouth is connect by pipeline with discharge bay 27.Liquid distribution device 22, aerator 29 and biological filter are set in two stage biological filter tank
The bed of material 25,12 water outlet of two stage biological filter tank are respectively connected to collecting-tank 1, discharge bay 27 and backwash discharge bay by pipeline
30, setting third flowmeter 15 in 12 water outlet of two stage biological filter tank and 1 connecting pipe of collecting-tank.
Embodiment 2
A kind of wastewater treatment integrated approach, including：
Waste water in S'1, collecting-tank 1 squeezes into the water inlet line of gas-liquid mixed reactor 6, water inlet line by intake pump 2
It is equipped with static mixer 5, hydrogen peroxide is added in static mixer 5 by hydrogen peroxide dosing pump 4 and is mixed with waste water, ozone hair
The mixed gas for the ozone and oxygen that raw device 9 generates is connect by admission line with the air inlet of gas-liquid mixed reactor 6, is given up
Water, ozone, oxygen and hydrogen peroxide are sufficiently mixed in gas-liquid mixed reactor 6, formed containing hydrogen peroxide, high concentration oxygen and
The dissolved air water of ozone；
S'2, the dissolved air water of gas-liquid mixed reactor 6 receiving by pipeline and 7 bottom of level-one composite catalytic oxidation tower is left
Rice bubble release connection generates a large amount of micro-nano bubble, level-one composite catalyzing oxygen in 7 bottom of level-one composite catalytic oxidation tower
Change tower 7 and structured filling material layer 20, catalyst layer are set from bottom to top, under the effect of the catalyst, ozone, hydrogen peroxide further convert
For hydroxyl radical free radical, it is water and carbon dioxide by Recalcitrant chemicals oxygenolysis in waste water or is converted into degradable small of biology
Molecular organic；The water inlet of 8 bottom of top water outlet connection two level composite catalytic oxidation tower of level-one composite catalytic oxidation tower 7,
Liquid distribution trough, gas distributor 19, structured filling material layer 20, catalyst layer is arranged in two level composite catalytic oxidation tower 8 from bottom to top,
Water inlet connects liquid distribution trough by pipeline, and gas distributor 19 is connect by pipeline with ozone generator 9, the dirt in waste water
Dye object is further degraded under ozone and catalyst action, and treated, and waste water is discharged from the water outlet on top, and level-one is compound to urge
The top for changing oxidizing tower 7 and two level catalysis oxidizing tower is equipped with gas outlet, and gas outlet is connect with tail gas breaking plant 10, and treated
Tail gas is connect by pipeline with 12 aerator 29 of two stage biological filter tank；
S'3, it leaves and contains over-saturation dissolved oxygen in the waste water of two level composite catalytic oxidation tower 8, waste water enters level-one biology
Filter tank 11 carries out bio-degradation reactions, and liquid distribution device 22, air water reverse flushing device and one are equipped in level-one biofilter 11
The grade biological filter bed of material does not set aerating system, the biological flora of different function is distributed in the level-one biological filter bed of material, can remove in waste water
Organic matter and total nitrogen, top are equipped with water outlet and backwash discharge outlet, and water outlet connects 12 bottom water inlet of two stage biological filter tank,
Two stage biological filter tank 12 is equipped with liquid distribution device 22, air water reverse flushing device, aerator 29 and biofilter material, top and is equipped with
Water outlet and backwash discharge outlet,
If the water outlet of S'4, two stage biological filter tank 12 reach discharge standard, direct emission, if not up to discharge standard,
By the part for 67% volume being not more than in the waste water for leaving the two stage biological filter tank, flows back into the step S'1 and wait locating
In the waste water of reason, pass through after the step S'1~S'3 successively, with the waste water others portion for leaving the two stage biological filter tank
Point mix and be confirmed whether to reach discharge standard, if reaching discharge standard, discharge, if not up to discharge standard, continue according to
Secondary repeating said steps S'1~S'4, until reaching discharge standard and discharging.
Embodiment 3
For a kind of wastewater treatment integrating device using embodiment 1 for handling dyeing waste water bio-chemical effluent, condition is as follows：Into
Water flow is 400L/h, CODCr=85mg/L, pH=6.5, stainless steel cloth packed height be 0.3m, catalyst be Supported Manganese,
The activated carbon of iron, Cu oxide, average grain diameter are 3~5mm, and catalyst packing ratio is 80%, smelly in ozone/oxygen mixture
Oxygen mass percentage is 9%, and the ozone/oxygen mixture flow into high efficient gas and liquid mixing reactor is 40L/h, by pure
It is 34mg/L that hydrogen peroxide, which calculates hydrogen peroxide additive amount, into the ozone/oxygen mixture flow of two level composite catalytic oxidation tower
For 120L/h, two level composite catalytic oxidation aeration plate uses titanium alloy material, and the air inflow into two stage biological filter tank is 100L/
H, the water outlet of two stage biological filter tank do not flow back.
Dyeing waste water is handled using the device of the present embodiment, it is as follows to be averagely discharged water quality index for continuous operation 30 days：CODCr
=25mg/L, pH=7.2, coloration<10 times, SS<10mg/L, COD in water outletCr, pH, SS and chromaticity index meet HJ 471-
2009《Textile dyeing and finishing projects for treating industrial wastewater technical specification》The requirement of middle quality of reused water.
Embodiment 4
For a kind of wastewater treatment integrating device using embodiment 1 for handling dyeing waste water bio-chemical effluent, condition is as follows：Into
Water flow is 400L/h, CODCr=120mg/L, pH=7.1, stainless steel cloth packed height be 1.0m, catalyst be Supported Manganese,
The aluminium oxide of ferriferous oxide, average grain diameter are 3~5mm, and catalyst packing ratio is 40%, ozone in ozone/oxygen mixture
Mass percentage is 9%, and the ozone/oxygen mixture flow into high efficient gas and liquid mixing reactor is 80L/h, by pure double
Oxygen water calculates, and hydrogen peroxide additive amount is 17mg/L, and the ozone/oxygen mixture flow into two level composite catalytic oxidation tower is
100L/h, two level composite catalytic oxidation aeration plate use fluorubber material, and the air inflow into two stage biological filter tank is 50L/h,
The water outlet of two stage biological filter tank does not flow back.
Dyeing waste water is handled using the device of the present embodiment, it is as follows to be averagely discharged water quality index for continuous operation 30 days：CODCr
=32mg/L, pH=7.4, coloration<10 times, SS<10mg/L, COD in water outletCr, pH, SS and chromaticity index meet HJ 471-
2009《Textile dyeing and finishing projects for treating industrial wastewater technical specification》The requirement of middle quality of reused water.
Embodiment 5
For a kind of wastewater treatment integrating device using embodiment 1 for handling landfill leachate bio-chemical effluent, condition is as follows：
Flow of inlet water is 400L/h, raw water CODCr=450mg/L, TN=45mg/L, pH=7.3, the regular layer height of filler are 0.5m, are urged
Agent is the MCM-41 molecular sieves of supported copper, ferriferous oxide, and catalyst particle size 5mm, catalyst packing ratio is 60%, ozone/
Ozone mass percentage is 9% in oxygen mixed gas, into the ozone/oxygen mixture of high efficient gas and liquid mixing reactor
Flow is 120L/h, is calculated by pure hydrogen peroxide, and hydrogen peroxide additive amount is 68mg/L, into the smelly of two level composite catalytic oxidation tower
Oxygen/oxygen mixed gas flow is 400L/h, and the air inflow into two stage biological filter tank is 400L/h, the water outlet of two stage biological filter tank
Flow and recirculation water flow-rate ratio are 1：1.
Landfill leachate bio-chemical effluent, continuous operation 30 days, average effluent quality are handled using device of the present invention
Index is as follows：CODCr=45mg/L, pH=7.2, coloration<10 times, SS<10mg/L, TN<20mg/L.
Embodiment 6
A kind of wastewater treatment integrating device using embodiment 1 is for handling landfill leachate bio-chemical effluent, raw water CODCr
1000mg/L bodied ferric sulfates are added in=450mg/L, TN=45mg/L, pH=7.3, after coagulation air-float pre-processes, water outlet
CODCr=280mg/L, TN=45mg/L, pH=6.2.Experiment condition is as follows：Flow of inlet water is 400L/h, stainless steel cloth filler
Height is 0.5m, and catalyst is the haydite for loading Mn oxide, and catalyst particle size 5mm, catalyst packing ratio is 60%, smelly
Ozone mass percentage is 9% in oxygen/oxygen mixed gas, and the ozone/oxygen gas into high efficient gas and liquid mixing reactor mixes
Gas flow is 60L/h, and it is 34mg/L to calculate hydrogen peroxide additive amount by pure hydrogen peroxide, into the smelly of two level composite catalytic oxidation tower
Oxygen/oxygen mixed gas flow is 300L/h, and the air inflow into two stage biological filter tank is 300L/h, the water outlet of two stage biological filter tank
Flow and recirculation water flow-rate ratio are 2：1.
Landfill leachate bio-chemical effluent, continuous operation 30 days, average effluent quality are handled using device of the present invention
Index is as follows：CODCr=38mg/L, pH=6.5, coloration<10 times, SS<10mg/L, TN<20mg/L.
In the present invention, the nano bubble release in gas-liquid mixed reactor can generate micro-nano bubble, improve waste water
The solubility of middle ozone and oxygen；It is all made of structured filling material layer in level-one composite catalytic oxidation tower and two level composite catalytic oxidation tower
With the Combination Design of catalyst layer, gas pressure drop can be reduced, improves gas-liquid mass transfer efficiency；Under the effect of the catalyst, hydrogen peroxide
Catalysis ozone decomposes the alkyl radical generated, and the ability of decomposing organic pollutant can be improved；It level-one biofilter can be effectively sharp
With the high concentration dissolved oxygen in the waste water for leaving two level composite catalytic oxidation tower, without aerating system is arranged, two stage biological is filtered
Pond further efficiently uses the high concentration dissolved oxygen in the waste water of level-one biofilter so that using the two stage biological of oxygen aeration
The treatment effeciency in filter tank greatly improves；Meanwhile the biological filter bed of material in level-one biofilter and two stage biological filter tank passes through distribution
The biological flora of different function can remove the total nitrogen in waste water and different organic matters.The present invention fluctuates situation for influent quality,
Two stage biological filter tank water part can also be back to front end collecting-tank, improve system impact resistance, ensured dirty in water inlet
In the case of contaminating the raising of object concentration, stable water outlet is up to standard.
Wastewater treatment integrated approach and device provided by the invention moderately aoxidize waste water in the early period of wastewater treatment process
Processing, the later stage of wastewater treatment process are handled by biosystem so that the obvious processing effect of waste water improves, and treatment effeciency is big
Width increases, and device integrated level is high, and simple installation reduces operating cost, has extensive production applicability.
Finally, method of the invention is only preferable embodiment, is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in the protection of the present invention
Within the scope of.
Claims (10)
1. a kind of wastewater treatment integrating device, which is characterized in that including：
Collecting-tank, gas-liquid mixed reactor, composite catalytic oxidation tower and the biofilter being sequentially communicated；
The water outlet of the gas-liquid mixed reactor is connected to the water inlet of the composite catalytic oxidation tower, the composite catalyzing oxygen
The water outlet for changing tower is connected to the water inlet of the biofilter；
The water inlet of the water outlet of the biofilter and the gas-liquid mixed reactor is connected to the collecting-tank respectively.
2. a kind of wastewater treatment integrating device according to claim 1, which is characterized in that in the gas-liquid mixed reactor
It is fixed with the second nano bubble release, for generating micro-nano bubble, improves the solubility of ozone and oxygen.
3. a kind of wastewater treatment integrating device according to claim 1, which is characterized in that
The composite catalytic oxidation tower includes the level-one composite catalytic oxidation tower being sequentially communicated and two level composite catalytic oxidation tower, institute
Gas-liquid mixed reactor is stated to be connected to the water inlet of the level-one composite catalytic oxidation tower；
The first nano bubble release, the first structured filling material layer and the are equipped in the level-one composite catalytic oxidation tower from bottom to top
One catalyst filled layer, the nano bubble release are connected to the water outlet of the level-one composite catalytic oxidation tower；
Second liquid distributor is equipped in the two level composite catalytic oxidation tower from bottom to top, gas distributor, second regular is filled out
The water inlet of the bed of material and the second catalyst filled layer, the second liquid distributor and the two level composite catalytic oxidation tower connects
It is logical.
4. a kind of wastewater treatment integrating device according to claim 1, which is characterized in that further include：Ozone generator, institute
The gas distributor of the water inlet and the two level composite catalytic oxidation tower of stating gas-liquid mixed reactor is sent out with the ozone respectively
The gas outlet connection of raw device.
5. a kind of wastewater treatment equipment according to claim 3, which is characterized in that
The biofilter includes the level-one biofilter being sequentially communicated and two stage biological filter tank, the level-one biofilter into
The mouth of a river is connected to the water outlet of the two level composite catalytic oxidation tower, the water outlet and the collecting-tank in the two stage biological filter tank
Connection；
The first liquid distribution device and the first biological filter bed of material, first liquid are equipped in the level-one biofilter from bottom to top
Body distribution apparatus is connected to the water inlet of the level-one biofilter；
Second liquid distribution apparatus, aerator and the second biological filter bed of material are equipped in the two stage biological filter tank from bottom to top,
The second liquid distribution apparatus is connected to the water inlet in the two stage biological filter tank.
6. a kind of wastewater treatment equipment according to claim 1, which is characterized in that further include：Backwashing system, it is described anti-
Rinse-system includes air compressor machine, discharge bay, backwash pump and backwash discharge bay, the backwash of the level-one biofilter into
Gas port and the backwash air inlet in the two stage biological filter tank are connected to the air inlet of the air compressor machine respectively, the level-one biology
The backwash water inlet in filter tank and the water outlet with the backwash pump respectively of the backwash water inlet in the two stage biological filter tank
Mouthful connection, the water inlet of the backwash pump is connected to the discharge bay, the backwash discharge bay and the discharge bay with
The two stage biological filter tank connection.
7. a kind of wastewater treatment equipment according to claim 1, which is characterized in that further include：Tail gas breaking plant, it is described
The gas outlet of level-one composite catalytic oxidation tower and the two level composite catalytic oxidation tower respectively with the tail gas breaking plant into
Gas port is connected to, and the gas outlet of the tail gas breaking plant is connected to the aerator in the two stage biological filter tank.
8. a kind of wastewater treatment integrated approach, which is characterized in that include the following steps：
It is mixed in S1, the mixed gas for mixing pending waste water with hydrogen peroxide solution and then being formed with oxygen and ozone,
Form the dissolved air water containing hydrogen peroxide, oxygen and ozone；
S2, it is filtered by the dissolved air water by multistage composite catalysis oxidation and then by multi-stage biological；
If S3, the waste water after multi-stage biological filtering reach discharge standard, discharge；If not up to discharge standard,
It then by no more than the part of 67% volume, flows back into waste water pending in the step S1, passes through the step S1 successively
After S2, it is mixed to remove the other parts no more than 67% volume with the waste water after multi-stage biological filtering
It closes, and is confirmed whether to reach discharge standard, if reaching discharge standard, discharge, if not up to discharge standard, continue to weigh successively
The multiple step S1~S3, until reaching discharge standard and discharging.
9. a kind of wastewater treatment integrated approach according to claim 8, which is characterized in that described to wait in the step S1
The waste water of processing and the volume flow ratio of the mixed gas are 3~10:1；Wherein, the quality of the ozone is the gaseous mixture
The 8~10% of the quality of body.
10. a kind of wastewater treatment integrated approach according to claim 8, which is characterized in that described to wait in the step S1
The volume ratio of the waste water of processing and the hydrogen peroxide solution is 6000~60000：1；Wherein, in the hydrogen peroxide solution, dioxygen
The quality of water is the 27.5% of the quality of the hydrogen peroxide solution.
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