CN108622994A - A kind of advanced oxidation multistage suspension bed reaction device and technique - Google Patents
A kind of advanced oxidation multistage suspension bed reaction device and technique Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- 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
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Abstract
The invention discloses a kind of advanced oxidation multistage suspension bed reaction devices and technique for handling organic wastewater with difficult degradation thereby, the apparatus main body is made of multistage suspension bed reaction member, each unit includes water distribution area, catalytic reaction zone, solid-liquid displacement zone, and exhalant region and effluent recycling system is arranged in afterbody suspension bed reaction member end；The device each suspension bed reaction member catalytic reaction zone uses different catalysts, catalytic degradation organic pollution ability to enhance step by step；When handling organic wastewater with difficult degradation thereby by the device, the whole utilization efficiency of OH is improved, outlet effect is improved, reduces catalyst loss, saves operating cost, and can realize the modularized design and regulation and control of single unit system.
Description
Technical field
The present invention relates to a kind of the advanced oxidation multistage suspension bed reaction devices and technique of processing organic wastewater with difficult degradation thereby, belong to
In technical field of waste water processing.
Background technology
With China's industrial expansion, a large amount of industrial wastewater is produced, generally all contains high concentration in this effluent part
Persistent organic pollutants by traditional biochemical processing process to the wastewater treatment generally require that biochemical place is substantially improved
Unit hydraulic detention time is managed, and outlet effect is extremely difficult to increasingly strict discharge standard.Currently, difficult to degrade organic for containing
The industrial wastewater of pollutant is handled, and most effective and most common method is Fenton oxidation, catalytic ozonation, electro-catalysis
The high-level oxidation technologies such as oxidation, catalytic wet oxidation.These technologies are by the effect of catalyst, by the active specy for the system that introduces
The strong oxidizing properties species such as the higher OH of activity are converted into, and then by larger molecular organics permineralization difficult to degrade or are resolved into
Degradable small-molecule substance.
The study found that single high-level oxidation technology often only has preferable removal to specific waste water or organic pollution
Effect makes it have general applicability to all types of industries waste water, by all kinds of advanced oxidations to expand the application field of the technology
Technology carries out coupling or multistage strengthen has become the trend that industrial wastewater advanced oxidation treatment technology develops.Chinese patent（Specially
Profit CN 106882866A）A kind of hydrogen peroxide synergy ozone heterogeneous catalytic oxidation processing waste water technology is disclosed, is handled out
The more single hydrogen peroxide catalytic oxidation of water effect and catalytic ozonation are obviously improved, but hydrogen peroxide and ozone profit in its system
It is reduced with efficiency.Chinese patent（Patent No. CN 107445367A）A kind of method of dyeing waste water advanced treating is disclosed, to print
Contaminating Sewage advanced treatment has good treatment effect, but its multistage high-level oxidation technology uses simple cascade, ozone profit
With inefficient, the catalyst of previous stage reaction member or the waste residue inflow rear stage reaction member of reaction generation, to reduce
System whole efficiency.Chinese patent（Patent No. CN 102115253A）Disclose a kind of advanced oxidation tower, reaction unit design
It is compact, collaboration processing of the multinomial technology in same reaction unit is realized, but due to not being directed to different high-level oxidation technology oxygen
Change the different feature design of intensity catalytic oxidation technique step by step, causes capacity usage ratio low.Chinese patent（Patent No. CN
107473435A）A kind of catalysed oxidation processes of industrial organic waste water processing difficult to degrade are disclosed, but its catalyst uses honeycomb
Formula structure, reaction contact area is limited, therefore is only applicable to low-concentration organic waste water processing.
Existing advanced oxidation coupling or multistage reinforcement process, although single advanced oxidation work can be promoted to a certain extent
Skill treatment effect, but the features such as generally existing synergy is bad, capacity usage ratio is low, catalyst is easy to run off or is lost, limitation
Popularization of the technology in field of industrial waste water treatment.
Invention content
It is technically existing insufficient for the coupling of existing advanced oxidation or multistage reinforcement process, the purpose of the present invention is
It is to provide a kind of advanced oxidation multistage suspension bed reaction device, which can realize that advanced oxidation reaction is step by step in reactor
Strengthen, reduce the loss of catalyst, reduce operating cost, improves refractory wastewater effect.
Another object of the present invention is to be to provide that a kind of low energy consumption, medicine consumption is low, treatment effeciency is high, easily realizes modularization
Organic wastewater with difficult degradation thereby processing method.
In order to solve the above-mentioned technical problem：The present invention provides a kind of advanced oxidation multistage suspension bed reaction devices, including
Multistage suspension bed reaction device 1, elevator pump 2, air source 3 and medicament storage tank 4, which is characterized in that the multistage suspension bed reaction
Device 1 is usually made of 2 ~ 5 grades of suspension bed reaction members；In every level-one suspension bed reaction member, waste water by water distributor into
Enter water distribution area 5, and enter catalytic reaction zone 6 from bottom to top, waste water enters solid-liquid displacement zone 7 after catalytic treatment, through solid-liquid point
Waste water after being detached from device 12 enters water distributor 9 by diversion pipe 13, into next stage suspension bed reaction member；Waste water is last
In first stage suspension bed reaction member successively behind water distribution area 5, catalytic reaction zone 6, solid-liquid displacement zone 7, into exhalant region 8；Go out
Pool effluent part is flowed out by downflow weir 16, and effluent part is back to suspension bed reaction device from top to bottom by return duct 15
Bottom is mixed with reaction unit water inlet.
Advanced oxidation coupling device provided by the invention further includes following preferred embodiment：
Preferred scheme, water distributor is made of sparge pipe 9 and flow-stopping plate 10 in water distribution area 5, and waste water is flowed by sparge pipe per level-one
Suspension bed reaction member, and form water stream channel from bottom to top through the effect of flow-stopping plate 10.
More preferably scheme, sparge pipe 9, flow-stopping plate 10 are stainless steel or titanium material in water distribution area 5.
Further preferred scheme, 9 nominal diameter of sparge pipe, 20 ~ 200 mm, uniformly downward trepanning on tube wall, with horizontal plane
Angle is 5 ~ 45 degree, 5 ~ 20 mm of aperture.
Further preferred scheme, flow-stopping plate 10 are in herringbone structure, are arranged along sparge pipe direction.
Preferred scheme, loading catalyst particle 11 in catalytic reaction zone 6, per level-one suspension bed reaction member filling catalysis
Agent particle 11 is all different, and the catalyst particle size 11 of rear stage suspension bed reaction member catalytic reaction zone filling is outstanding less than previous stage
11 grain size of catalyst granules of floating bed reaction member catalytic reaction zone filling；Rear stage suspension bed reaction member catalytic reaction zone fills
The catalyst activity filled out is higher than the catalyst activity of previous stage suspension bed reaction member catalytic reaction zone filling.
More preferably scheme, the catalyst granules 11 to suspend in catalytic reaction zone 6 is using activated carbon as carrier.
Further preferred scheme, 11 area load Fe of catalyst granules2O3、PbO2、TiO2、PtO2、IrO2Or YiO2Deng
One or more of catalyst materials.
Further preferred scheme, 11 grain size of catalyst granules are 3 ~ 50 mm.
Preferred scheme, solid-liquid displacement zone 7 are made of 1 ~ 3 layer of solid-liquid separator 12；Baffle is arranged in solid-liquid displacement zone top
14, setting diversion pipe 13 is connect with next stage suspension bed reaction member water distributor 9 on baffle.
More preferably scheme, in solid-liquid displacement zone 7 solid-liquid separator 12, baffle 14 and diversion pipe 13 be stainless steel or
Titanium material.
Preferred scheme, 8 height of exhalant region are 30 ~ 100 cm, 10 ~ 50 cm of superelevation, and water outlet is flowed out by downflow weir 16；
Return duct 15 is arranged in exhalant region bottom, and return duct extends downward into first order suspension bed reaction member water distribution area 5-1 flow-stopping plates 10
Top.
The present invention also provides the organic wastewater with difficult degradation thereby treatment process based on advanced oxidation multistage suspension bed reaction device,
It is characterized in that, pending waste water passes sequentially through the advanced oxidation suspension bed processing strengthened step by step；It is single per level-one suspension bed reaction
Member is relatively independent, and catalyst is suspended in catalytic reaction zone, and it is single to stop that it enters the reaction of next stage suspension bed by solid-liquid separator
Member；Waste water obtains that COD is low and the processing water of B/C high after the processing of multistage suspension bed reaction device, and it is outstanding to be partly refluxed to the first order
Floating bed reaction member adjusts the indexs such as pending wastewater pH, COD.
The present invention the organic wastewater with difficult degradation thereby treatment process based on advanced oxidation multistage suspension bed reaction device further include
Following preferred embodiment：
Preferred scheme includes the following steps：
Step 1：Pending wastewater pH enters first order suspension bed reaction member water distribution area after being adjusted to 5.0 ~ 7.0；
Step 2：Water distribution area waste water enters catalytic reaction zone from bottom to top, and catalyst granules keeps suspension in catalytic reaction zone
State, mass-transfer efficiency and reaction rate of the raising organic pollution in catalyst surface；
Step 3：The waste water containing catalyst granules is laggard by solid-liquid displacement zone removing catalyst granules after catalytic reaction zone is handled
Enter the processing of rear stage suspension bed reaction member；
Step 4：Waste water processing step in rear stage suspension bed reaction member is same Step 2: step 3；Catalytic reaction zone is catalyzed
First stage suspension bed reaction member catalytic reaction zone catalyst granules grain size smaller, catalytic activity are stronger earlier above for agent particle；
Step 5：The water outlet of afterbody suspension bed reaction member solid-liquid displacement zone enters exhalant region, and part handles water through return duct
It is back to first order suspension bed reaction member water distribution area；
Step 6：Exhalant region part handles water and flows out reaction unit through exhalant region downflow weir.
Further preferred scheme, processing time of the waste water in advanced oxidation multistage suspension bed reaction device are 30 ~ 240
min；Waste water is 10 ~ 120 min in the processing time of suspension bed reaction members at different levels.
Further preferred scheme, the flow velocity that can be intake by control expose the methods of air or exposure ozone, maintain catalysis reaction
The suspended state of area's catalyst granules.
Further preferred scheme can add H in catalytic reaction zone2O2, the oxidants such as NaClO, 1 ~ 1000 mg/ of dosage
L。
Further preferred scheme, phegma reflux ratio are 1:3~3:1.
Further preferred scheme, step 6 is discharged after processing can proceed with biochemical treatment or film process.
Compared with prior art, beneficial effects of the present invention are：
1, multistage advanced oxidation suspension bed reaction member is connected in same reactor, catalyst granules is descending, oxidation
Ability grows from weak to strong.Organic wastewater with difficult degradation thereby first passes through the lower reaction member catalysis reaction of operating cost, and part is difficult to degrade to be had
Machine object is decomposed or removes, and remaining hardly degraded organic substance enters rear stage reaction member advanced treating, thus by the difficulty in waste water
Degradable organic pollutant is gradually degraded into CO2And H2O substantially increases the removal efficiency of COD, improves the energy and medicament using effect
Rate saves operating cost.
2, catalytic reaction zone uses suspension bed structure design, catalyst to be suspended in the middle part of suspension bed reaction members at different levels, carry
High catalyst and reaction solution contact area, accelerate and strengthen hardly degraded organic substance, OH and H2O2Mass transfer in liquid phase, reduce
The concentration polarization of catalyst surface.
3, suspension bed reaction members at different levels are relatively independent, and solid-liquid displacement zone is arranged in end, effectively prevent catalyst loss, prolongs
Device maintenance period has been grown, catalyst has been saved and substitutes expense.
In conclusion the technical advantages of the present invention are that by high-level oxidation technology progress couplant plural serial stage, widen
To the process range of organic wastewater with difficult degradation thereby, every advanced oxidation processes coupling effect is enhanced, improves energy and medicament profit
With efficiency, reduce catalyst loss.After apparatus of the present invention and process, organic wastewater with difficult degradation thereby can be significantly reduced
COD improves the biodegradability of waste water, improves B/C, and effluent quality meets the inflow requirement of existing biochemical sewage treatment process.
Description of the drawings
【Fig. 1】It is advanced oxidation coupling mechanism structure schematic diagram of the present invention；
【Fig. 2】It is the process flow diagram of the present invention；
1 is multistage suspension bed reaction device, and 2 be elevator pump, 3-1 is air air source, and 3-2 is ozone gas source, and 4 be medicament storage tank,
5-1 is first stage suspension bed water distribution area, and 5-2 is two level suspension bed water distribution area, and 5-3 is three-level suspension bed water distribution area, and 6-1 is outstanding for level-one
Floating bed catalytic reaction zone, 6-2 are two level suspension bed catalytic reaction zone, and 6-3 is three-level suspension bed catalytic reaction zone, and 7-1 is level-one
Suspension bed solid-liquid displacement zone, 7-2 are two level suspension bed solid-liquid displacement zone, and 7-3 is three-level suspension bed solid-liquid displacement zone, and 8 be water outlet
Area, 9 be sparge pipe, and 10 be flow-stopping plate, and 11 be catalyst granules, and 12 be solid-liquid separator, and 13 be diversion pipe, and 14 be baffle, 15
It is downflow weir for return duct, 16.
Specific implementation mode
Following embodiment combination attached drawing is intended to be described in further detail the content of present invention, is not the limitation present invention
Protective scope of the claims.
The advanced oxidation multistage suspension bed reaction device of the present invention is illustrated with the device in Fig. 1：Wastewater treatment fills
It sets and is usually made of 3 grades of suspension bed reaction members；In first stage suspension bed reaction member, waste water enters water distribution area by water distributor
5-1, and enter catalytic reaction zone 6-1 from bottom to top, waste water enters solid-liquid displacement zone 7-1 after catalytic treatment, through being separated by solid-liquid separation
Waste water after device 12 detaches enters water distributor 9 by diversion pipe 13, into two level suspension bed reaction member；It is anti-in two level suspension bed
It answers in unit, waste water enters water distribution area 5-2 by water distributor, and enters catalytic reaction zone 6-2 from bottom to top, after catalytic treatment
Waste water enters solid-liquid displacement zone 7-2, and the waste water after the separation of solid-liquid separator 12 enters water distributor 9 by diversion pipe 13, enters
Three-level suspension bed reaction member；In three-level suspension bed reaction member, waste water enters water distribution area 5-3 by water distributor, and under
And it is upper into catalytic reaction zone 6-3, waste water enters solid-liquid displacement zone 7-3 after catalytic treatment, after the separation of solid-liquid separator 12
Waste water by diversion pipe 13 enter water distributor 9, into exhalant region 8；8 effluent part of exhalant region is flowed out by downflow weir 16, portion
Divide waste water to be back to first stage suspension bed water distribution area 5-1 from top to bottom by return duct 15, is mixed with reaction unit water inlet.Water distribution area
Water distributor is made of sparge pipe 9 and flow-stopping plate 10 in 5, and using stainless steel or titanium material, wherein 9 nominal of sparge pipe is straight
20 ~ 200 mm of diameter, uniformly downward trepanning on tube wall, angle with horizontal plane are 5 ~ 45 degree, 5 ~ 20 mm of aperture, and flow-stopping plate 10 is in people
Character form structure arranges that waste water flows into every level-one suspension bed reaction member by sparge pipe 9, and through flow-stopping plate 10 along sparge pipe direction
Effect forms water stream channel from bottom to top；Loading catalyst particle 11 in catalytic reaction zone 6, per level-one suspension bed reaction member
Loading catalyst particle 11 is all different, and catalyst granules 11 is using activated carbon as carrier, area load Fe2O3、PbO2、TiO2、
PtO2、IrO2Or YiO2Deng one or more of catalyst materials, grain size is 3 ~ 50 mm；Solid-liquid displacement zone 7 is by 3 layers of solid-liquid separator
12 compositions；Baffle 14 is arranged in solid-liquid displacement zone top, and diversion pipe 13 and next stage suspension bed reaction member water distribution is arranged on baffle
Device 9 connects, and solid-liquid separator 12, baffle 14 and diversion pipe 13 are stainless steel or titanium material；8 height of exhalant region is 30
~ 100 cm, 10 ~ 50 cm of superelevation, water outlet are flowed out by downflow weir 16；Return duct 15 is arranged in exhalant region bottom, and return duct 15 is downward
Extend to 10 top of first order suspension bed reaction member water distribution area 5-1 flow-stopping plates.
Below in conjunction with the accompanying drawings 1 and attached drawing 2 technique of the present invention is described in detail by present invention process step includes：
（1）After waste water adjusts pH to 5.0 ~ 7.0, first order suspension bed reaction member water distribution area is entered by water pump lifting；
（2）Water distribution area waste water enters catalytic reaction zone from bottom to top, by control water inlet flow velocity, exposes air or exposes ozone, makes to urge
Catalyst particles keep suspended state in catalytic reaction zone；By adding 1 ~ 1000 mg/L H to catalytic reaction zone2O2, NaClO etc.
Oxidant strengthens advanced oxidation reaction；
（3）The waste water containing catalyst granules enters two after removing catalyst granules by solid-liquid displacement zone after catalytic reaction zone is handled
Grade suspension bed reaction member processing；Waste water is 10 ~ 120 min in the processing time of first stage suspension bed reaction member；
（4）Waste water processing step in two level suspension bed reaction member is same（2）、（3）, processing time is 10 ~ 120 min；Catalysis
Reaction zone catalyst granules is more compared with first stage suspension bed reaction member catalytic reaction zone catalyst granules grain size smaller, catalytic activity
By force；Processed waste water enters the processing of three-level suspension bed reaction member；
（5）Waste water processing step in three-level suspension bed reaction member is same（2）、（3）, processing time is 10 ~ 120 min；Catalysis
Reaction zone catalyst granules is more compared with two level suspension bed reaction member catalytic reaction zone catalyst granules grain size smaller, catalytic activity
By force；Processed waste water enters exhalant region behind solid-liquid displacement zone, and part handles water and is back to the reaction of first stage suspension bed through return duct
Unit water distribution area, reflux ratio 1:3~3:1；
（6）Exhalant region part handles water and flows out reaction unit through exhalant region downflow weir, subsequently can proceed with biochemical treatment or film
Processing.
Effect of the present invention is described further with reference to embodiment.
Embodiment 1
Certain coal chemical industry enterprises produces waste water, 2700 mg/L of raw water COD, pH value 8.2.It is multistage using a kind of advanced oxidation of the present invention
Raw water pH is adjusted to 5.0 by suspension bed reaction device and process；Into the processing of first stage suspension bed reaction member, catalyst
Particle is that 50 mm of grain size carries Fe2O3Activated carbon, bottom expose air, and retention time of sewage is 40 min；Enter back into two level suspension bed
Reaction member processing, catalyst granules are that 40 mm of grain size carries Fe2O3、TiO2Activated carbon, bottom expose air, and retention time of sewage is
40 min；The processing of three-level suspension bed reaction member is entered back into, catalyst granules is that 25 mm of grain size carries TiO2Activated carbon, bottom expose
Air, hydrogen peroxide add 10 mg/L of concentration, and retention time of sewage is 40 min, is discharged 180 mg/L of COD after final process, goes
Except rate 93.4%.
Embodiment 2
Certain chemical synthesis pharmacy corporation produces waste water, 19800 mg/L of raw water COD, pH value 6.5.Using of the invention a kind of advanced
Multistage suspension bed reaction device and process are aoxidized, raw water pH is adjusted to 5.0；Into at first stage suspension bed reaction member
Reason, catalyst granules are that 50 mm of grain size carries Fe2O3Activated carbon, bottom expose ozone, and retention time of sewage is 50 min；Enter back into two
Grade suspension bed reaction member processing, catalyst granules are that 30 mm of grain size carries TiO2Activated carbon, bottom expose ozone, and hydrogen peroxide adds
20 mg/L of concentration, retention time of sewage are 30 min；The processing of three-level suspension bed reaction member is entered back into, catalyst granules is grain
15 mm of diameter carries PtO2、IrO2Activated carbon, bottom expose ozone, and hydrogen peroxide adds 20 mg/L of concentration, retention time of sewage 30
Min is discharged 2260 mg/L of COD, removal rate 88.6% after final process.
Embodiment 3
Water factory's reverse osmosis concentrated water in certain, 820 mg/L of raw water COD, pH value 7.1.It is outstanding using a kind of advanced oxidation multistage of the present invention
Raw water pH is adjusted to 5.5 by floating bed reaction unit and process；Into the processing of first stage suspension bed reaction member, catalyst particles
Grain is that 50 mm of grain size carries Fe2O3Activated carbon, bottom expose ozone, and retention time of sewage is 60 min；It is anti-to enter back into two level suspension bed
It is that 25 mm of grain size carries Fe to answer cell processing, catalyst granules2O3、TiO2Activated carbon, bottom expose ozone, and hydrogen peroxide adds concentration 15
Mg/L, retention time of sewage are 60 min, and 45 mg/L of COD, removal rate 94.5% are discharged after final process.
Claims (11)
1. a kind of advanced oxidation multistage suspension bed reaction device, including multistage suspension bed reaction device（1）, elevator pump（2）, air source
（3）With medicament storage tank（4）, which is characterized in that the multistage suspension bed reaction device is usually by 2 ~ 5 grades of suspension bed reaction members
Composition；In every level-one suspension bed reaction member, waste water enters water distribution area by water distributor（5）, and enter catalysis from bottom to top
Reaction zone（6）, waste water enters solid-liquid displacement zone after catalytic treatment（7）, through solid-liquid separator（12）Waste water after separation passes through
Diversion pipe（13）Into water distributor（9）, into next stage suspension bed reaction member；Waste water is in afterbody suspension bed reaction member
In successively pass through water distribution area（5-3）, catalytic reaction zone（6-3）, solid-liquid displacement zone（7-3）Afterwards, into exhalant region（8）；Exhalant region
Effluent part passes through downflow weir（16）Outflow, effluent part pass through return duct（15）It is back to suspension bed reaction device from top to bottom
Bottom is mixed with reaction unit water inlet.
2. advanced oxidation multistage suspension bed reaction device according to claim 1, which is characterized in that the water distribution area
（5）Middle water distributor is by sparge pipe（9）And flow-stopping plate（10）Composition, waste water are flowed by sparge pipe per level-one suspension bed reaction member,
And through flow-stopping plate（10）Effect forms water stream channel from bottom to top.
3. advanced oxidation multistage suspension bed reaction device according to claim 2, which is characterized in that the sparge pipe
（9）For stainless steel or titanium material, 20 ~ 200 mm of nominal diameter, uniformly downward trepanning on tube wall, angle with horizontal plane
It is 5 ~ 45 degree, 5 ~ 20 mm of aperture；The flow-stopping plate（10）For stainless steel or titanium material, flow-stopping plate is in herringbone
Structure is arranged along sparge pipe direction.
4. advanced oxidation multistage suspension bed reaction device according to claim 1, which is characterized in that the catalysis reaction
Area（6）Middle loading catalyst particle（11）, it is all different per level-one suspension bed reaction member loading catalyst particle, rear stage is outstanding
The catalyst particle size of floating bed reaction member catalytic reaction zone filling is loaded less than previous stage suspension bed reaction member catalytic reaction zone
Catalyst particle size；The catalyst activity of rear stage suspension bed reaction member catalytic reaction zone filling is anti-higher than previous stage suspension bed
The catalyst activity for answering unit catalytic reaction zone to load.
5. advanced oxidation multistage suspension bed reaction device according to claim 5, which is characterized in that the catalyst particles
Grain（11）Using activated carbon as carrier, area load Fe2O3、PbO2、TiO2、PtO2、IrO2Or YiO2Deng one or more of catalyst
Material；The catalyst granules（11）Grain size is 3 ~ 50 mm.
6. advanced oxidation multistage suspension bed reaction device according to claim 1, which is characterized in that the separation of solid and liquid
Area（7）By 1 ~ 3 layer of solid-liquid separator（12）Composition；Baffle is arranged in solid-liquid displacement zone top（14）, diversion pipe is set on baffle
（13）With next stage suspension bed reaction member water distributor（9）Connection.
7. advanced oxidation multistage suspension bed reaction device according to claim 7, which is characterized in that the separation of solid and liquid
Device（12）, baffle（14）And diversion pipe（13）For stainless steel or titanium material.
8. advanced oxidation multistage suspension bed reaction device according to claim 1, which is characterized in that exhalant region（8）Highly
For 30 ~ 100 cm, 10 ~ 50 cm of superelevation, water outlet is flowed out by downflow weir；Return duct is arranged in exhalant region bottom（15）, return duct
Extend downward into first order suspension bed reaction member water distribution area（5-1）Flow-stopping plate（10）Top.
9. being based on claim 1 ~ 9 any one of them advanced oxidation multistage suspension bed process, which is characterized in that pending waste water
Pass sequentially through the advanced oxidation suspension bed processing strengthened step by step；Relatively independent per level-one suspension bed reaction member, catalyst suspends
In catalytic reaction zone, stop that it enters next stage suspension bed reaction member by solid-liquid separator；Waste water is anti-through multistage suspension bed
It after answering device to handle, obtains that COD is low and the processing water of B/C high, is partly refluxed to first order suspension bed reaction member, adjusts and wait locating
Manage the indexs such as wastewater pH, COD.
10. technique according to claim 10, which is characterized in that include the following steps：
Step 1：Pending wastewater pH enters first order suspension bed reaction member water distribution area after being adjusted to 5.0 ~ 7.0；
Step 2：Water distribution area waste water enters catalytic reaction zone from bottom to top, and catalyst granules keeps suspension in catalytic reaction zone
State, mass-transfer efficiency and reaction rate of the raising organic pollution in catalyst surface；
Step 3：The waste water containing catalyst granules is laggard by solid-liquid displacement zone removing catalyst granules after catalytic reaction zone is handled
Enter the processing of rear stage suspension bed reaction member；
Step 4：Waste water processing step in rear stage suspension bed reaction member is same Step 2: step 3；Catalytic reaction zone is catalyzed
First stage suspension bed reaction member catalytic reaction zone catalyst granules grain size smaller, catalytic activity are stronger earlier above for agent particle；
Step 5：The water outlet of afterbody suspension bed reaction member solid-liquid displacement zone enters exhalant region, and part handles water through return duct
It is back to first order suspension bed reaction member water distribution area；
Step 6：Exhalant region part handles water and flows out reaction unit through exhalant region downflow weir.
11. technique according to claim 11, which is characterized in that waste water is in advanced oxidation multistage suspension bed reaction device
Processing time be 30 ~ 240 min；Waste water is 10 ~ 120 min in the processing time of suspension bed reaction members at different levels；Step 2
In can pass through control intake flow velocity, expose air or expose the methods of ozone, maintain the suspended state of catalytic reaction zone catalyst granules；
To accelerate advanced oxidation reaction rate, the oxidants such as H2O2, NaClO, dosage 1 ~ 1000 can be added in catalytic reaction zone
mg/L；Phegma reflux ratio is 1 in step 5:3~3:1.
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| CN201810478169.6A CN108622994A (en) | 2018-05-18 | 2018-05-18 | A kind of advanced oxidation multistage suspension bed reaction device and technique |
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| CN201810478169.6A CN108622994A (en) | 2018-05-18 | 2018-05-18 | A kind of advanced oxidation multistage suspension bed reaction device and technique |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5358646A (en) * | 1993-01-11 | 1994-10-25 | Board Of Regents, The University Of Texas System | Method and apparatus for multiple-stage and recycle wet oxidation |
| WO1995021794A1 (en) * | 1994-02-14 | 1995-08-17 | Envirex, Inc. | Integrated adsorption/advanced oxidation fluidized bed reactor |
| CN101519251A (en) * | 2009-04-09 | 2009-09-02 | 广西大学 | Process for treating bio-refractory waste water by up-flow multi-phase oxidation column |
| CN106630110A (en) * | 2017-03-01 | 2017-05-10 | 南京大学 | Integrated fluidized bed device for gradient ozone catalyzing and application of integrated fluidized bed device |
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2018
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5358646A (en) * | 1993-01-11 | 1994-10-25 | Board Of Regents, The University Of Texas System | Method and apparatus for multiple-stage and recycle wet oxidation |
| WO1995021794A1 (en) * | 1994-02-14 | 1995-08-17 | Envirex, Inc. | Integrated adsorption/advanced oxidation fluidized bed reactor |
| CN101519251A (en) * | 2009-04-09 | 2009-09-02 | 广西大学 | Process for treating bio-refractory waste water by up-flow multi-phase oxidation column |
| CN106630110A (en) * | 2017-03-01 | 2017-05-10 | 南京大学 | Integrated fluidized bed device for gradient ozone catalyzing and application of integrated fluidized bed device |
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Application publication date: 20181009 |