CN102086070A - Moving bed type advanced cyclic oxidation treatment method and system - Google Patents
Moving bed type advanced cyclic oxidation treatment method and system Download PDFInfo
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- CN102086070A CN102086070A CN2010105725451A CN201010572545A CN102086070A CN 102086070 A CN102086070 A CN 102086070A CN 2010105725451 A CN2010105725451 A CN 2010105725451A CN 201010572545 A CN201010572545 A CN 201010572545A CN 102086070 A CN102086070 A CN 102086070A
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- waste water
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Abstract
A moving bed type advanced cyclic oxidation treatment method comprises the following steps: wastewater is led to an advanced oxidation tank to perform the advanced oxidation reaction of wastewater; wastewater passes through a sand filter body in the advanced oxidation tank to filter the oxidized iron sludge of the wastewater; and circular backflushing is performed to the sand filter body in the advanced oxidation tank for recycling, and the obtained sand filter body is used to perform circular filtration to the wastewater. The moving bed type advanced cyclic oxidation treatment system contains the advanced oxidation tank, a sand filter bed and a backflushing device, wherein the advanced oxidation tank is used to hold wastewater to ensure the advanced oxidation reaction of the wastewater; the sand filter bed is arranged in the advanced oxidation tank and has the sand filter body, thus the sand filter body can be used to filter the iron sludge of the wastewater for recycling; and the backflushing device is arranged in the advanced oxidation tank, thus the sand filter body can be backflushed in the advanced oxidation tank and the backflushed sand filter body can be used to filter wastewater circularly.
Description
Technical field
The present invention relates to a kind of moving-bed type advanced oxidation (advanced oxidation process, AOP) circulation process method and system thereof; Particularly about sand filter bed (sand filter bed) is arranged in the advanced oxidation groove, and utilize the backwash device that the filter sand body is carried out backwash in this advanced oxidation groove, mobile layer of sand and the advanced oxidation circulation process method and the system thereof of recycling iron mud.
Background technology
Commonly use waste water treatment process, as the patent of invention of TaiWan, China patent announcement No. 449574 " electrolysis/oxidized waste water facture ", it discloses a kind of electrolysis/oxidized waste water facture of removing high concentration COD and comprises step:
(a), waste water, iron ion reagent and the particle carrier that desire is handled inserted in electrolysis/oxidation trough;
(b), the pH value of waste water is controlled at below 2.5, and with above-mentioned particle carrier fluidization, the upper reaches speed setting is in 10～150m/hr;
(c), carry out electrolytic oxidation reaction, cathode current density is set in 20～500A/m
2, and lasting adding concentration of hydrogen peroxide is set at 1～6 times of waste water COD; And
(d), the pH value is adjusted to 6～9 after, waste water is separated.
The iron ion reagent of inserting in step (a) is ferric iron reagent, and its concentration range is 500～5000mg/l.Or the iron ion reagent of inserting in the step (a) is ferrous iron reagent.The particle carrier of inserting in the step (a) is selected from brick powder, sand, granulated glass sphere, synthetic resins, frivolous stone (pumic) and artificial particle.
Particle carrier fluidization is to utilize reflux pump with the bottom of part return of waste water to this electrolysis/oxidation trough in step (b), and makes above-mentioned particle carrier fluidization, and the pH value of the waste water in step (b) is 1.5～2.5.
The add-on of hydrogen peroxide in step (c) (ear than) be waste water the COD value 0.3～1.2 between.
In step (d), add jelling agent.
Another commonly uses waste water treatment process, and as the patent of invention of TaiWan, China patent announcement No. 524779 " the chemical oxidation waste water treatment process of low sludge yield ", its chemical oxidation waste water treatment process that discloses a kind of low sludge yield comprises step:
In the fluid bed reactive tank, with waste water and Fenton reagent that desire is handled, it comprises hydrogen peroxide and ferrous ion, the thorough mixing reaction;
Wherein have suitable particle carrier in this fluid bed reactive tank, the ferric iron major part that reaction is generated is able to crystallization or precipitation is coated on this carrier surface; And
The waste water of handling is shifted out this reactive tank.
Wherein this particle carrier is selected from the following cohort of forming: brick powder, activated carbon, sand, synthetic resins and artificial particle.
Wherein this fluid bed reactive tank has the current of flow velocity 10～120m/hr, makes above-mentioned particle carrier fluidization; Or this particle carrier is the brick powder, and the flow velocity 30～60m/hr of above-mentioned current.
Wherein above-mentioned Fenton reagent is injected by the bottom of this fluid bed reactive tank.Wherein above-mentioned hydrogen peroxide and ferrous ion are injected the bottom of this fluid bed reactive tank respectively by two different return lines.
The wherein above-mentioned hydrogen peroxide and the weight ratio of ferrous ion are between 0.2～5.0.Wherein the add-on of above-mentioned ferrous ion is 25～500mg/l.
Wherein the pH value scope of this fluid bed reactive tank is 2～5.Wherein above-mentioned waste water is 10～600 minutes in the residence time of this fluid bed reactive tank.Wherein the area load range of this fluid bed reactive tank is 0.02～5kg Fe/m
2Hr.
Aforementioned No. 449574 and No. 524779 patent of invention are only for the reference of the technology of the present invention background and present technical development state is described, it is not in order to limit the scope of the invention.
Yet the oxidized waste water facture of commonly using of aforementioned No. 449574 and No. 524779 still has many technical disadvantages.In fact, the aforementioned oxidized waste water facture of commonly using must consume a large amount of iron ion reagent, and certainly leads to a large amount of iron mud.Therefore, commonly use the demand that the oxidized waste water facture certainly exists further minimizing iron ion reagent usage quantity and reduces iron mud generation.
In view of this, the present invention is in order to satisfy the demand, it provides a kind of moving-bed type advanced oxidation circulation process method and system thereof, it is arranged at sand filter bed (sand filter bed) in the advanced oxidation groove, and the filter sand body is carried out backwash in this advanced oxidation groove, to reach the purpose that promotes backwash filter sand efficient and recycling iron mud.
Summary of the invention
The object of the present invention is to provide a kind of moving-bed type advanced oxidation circulation process method and system thereof, it is arranged at sand filter bed in the advanced oxidation groove, and utilize the backwash device that the filter sand body is moved up and down in this advanced oxidation groove and carry out backwash, move up and down the purpose of carrying out advanced oxidation to reach continuous circulation, and recycling iron mud, to reach the purpose that reduces the mud generation.
In order to reach above-mentioned purpose, the present invention by the following technical solutions:
A kind of moving-bed type advanced oxidation circulation process method, this method comprises:
Waste water is directed in the advanced oxidation groove, so that this waste water is carried out the advanced oxidation reaction;
In this advanced oxidation groove, the filter sand body is passed through in this waste water guiding, so that filter this waste water; And
The backwash that in this advanced oxidation groove, this filter sand body circulated, so as to utilize this filter sand body of backwash carry out this waste water of circulating filtration, and reclaim iron mud.
In backwash process, described filter sand body is by zig-zag washed-out sand passage or crooked washed-out sand passage.
Described advanced oxidation reaction needs to add ferrous sulfate, hydrogen peroxide and ozone.
A kind of moving-bed type advanced oxidation circulating treating system, this system comprises:
The advanced oxidation groove, it is in order to ccontaining waste water, so that this waste water is carried out the advanced oxidation reaction;
Sand filter bed, it is arranged in this advanced oxidation groove, and this sand filter bed has the filter sand body, so that utilize this filter sand body to filter this waste water; And
The backwash device, it is arranged in this advanced oxidation groove so that in this advanced oxidation groove this filter sand body of backwash, and reclaim iron mud;
Wherein this backwash filter sand body circulation be used to filter this waste water.
This advanced oxidation reaction of preferred embodiment of the present invention needs to add ferrous sulfate, hydrogen peroxide and ozone.
This hydrogen peroxide of preferred embodiment of the present invention and ozone utilize pressurizing device to mix and are added to this waste water.
Preferred embodiment of the present invention utilizes gas-lift pipe that this filter sand body is moved up and down the circulation backwash in this sand filtration groove.
This backwash device of preferred embodiment of the present invention comprises sand-washing device, and this sand-washing device has zig-zag washed-out sand passage or crooked shape washed-out sand passage, and in backwash process, this filter sand body is by this zig-zag washed-out sand passage or crooked washed-out sand passage.In backwash process, described filter sand body is by this zig-zag washed-out sand passage or crooked washed-out sand passage.
This advanced oxidation groove of preferred embodiment of the present invention is connected to pH and adjusts groove and iron mud accumulator tank.
This iron mud accumulator tank of preferred embodiment of the present invention is connected to mixed slowly groove and swash plate is floating except that fast heavy pond.
The invention has the advantages that:
The present invention is arranged at sand filter bed in the advanced oxidation groove, and utilizes the backwash device that the filter sand body is carried out backwash in this advanced oxidation groove, has reached the purpose that continuous circulation is carried out advanced oxidation, promoted backwash filter sand efficient.Moving-bed type advanced oxidation circulation process method of the present invention and system thereof handle and iron mud recovery and processing system applicable to various advanced oxidation wastewater treatments, automatic back-washing filter sand, are used in particular for suspended substance or suspended solids that various advanced oxidation wastewater treatments produce.
Description of drawings
Fig. 1 is the schema of the moving-bed type advanced oxidation circulation process method of preferred embodiment of the present invention.
Fig. 2 is the schematic side view of the moving-bed type advanced oxidation circulating treating system of preferred embodiment of the present invention.
Fig. 3 carries out the local enlarged diagram of backwash filter sand body in sand-washing device for the moving-bed type advanced oxidation circulating treating system of preferred embodiment of the present invention.
Reference numeral:
The S1 first step S2 second step S3 third step
1 advanced oxidation groove, 11 waterwater entrances, 12 filtered water export 13 iron mud discharging mouths
20 liters of airways of 14 first divider 15 second dividers, 2 backwash devices
21 clean floating removal apparatus 30 press of separator tank 22 sand-washing devices, 3 pressurizations
A filter sand body falling direction arrow
Embodiment
In order fully to understand the present invention, in hereinafter will exemplifying preferred embodiment and conjunction with figs. elaborates, and it is not in order to limit the present invention.
The moving-bed type advanced oxidation circulation process method of preferred embodiment of the present invention and system thereof handle and iron mud recovery and processing system applicable to various advanced oxidation wastewater treatments, automatic back-washing filter sand, but it is not in order to limit range of application of the present invention.The moving-bed type advanced oxidation circulation process method of preferred embodiment of the present invention and system thereof are used in particular for suspended substance or the suspended solids that various advanced oxidation wastewater treatments produce, but it is not in order to limit scope of the present invention.
Fig. 1 discloses the schema of the moving-bed type advanced oxidation circulation process method of preferred embodiment of the present invention.Please refer to shown in Figure 1ly, the moving-bed type advanced oxidation circulation process method of preferred embodiment of the present invention comprises:
First step S1: waste water suitably is directed in the advanced oxidation groove with pipeline, so that this waste water is carried out the advanced oxidation reaction, this advanced oxidation reaction needs to add ferrous sulfate (FeSO
4), hydrogen peroxide (H
2O
2) and ozone (O
3), wherein this hydrogen peroxide and ozone are oxygenant, and ferrous sulfate is a catalyzer;
The second step S2: then, in this advanced oxidation groove, the filter sand body is passed through in this waste water guiding,, at this moment, produce suspended solids at this filter sand body inner filtration so that filter the iron mud and the prolongation oxidation reaction process of this waste water after oxidation; And
Third step S3: then, in this advanced oxidation groove, utilize gas-lift pipe that this filter sand body is moved up and down the circulation backwash mud that taps a blast furnace, reclaim iron mud and utilization again so that concentrate, and with this filter sand body of backwash be collected in circulate in this advanced oxidation groove mobile so that utilize this filter sand body of backwash carry out this waste water of circulating filtration.
In addition, preferred embodiment of the present invention is in backwash process, and this filter sand body is by zig-zag washed-out sand passage or crooked washed-out sand passage, so that promote backwash efficiency.
Fig. 2 discloses the schematic side view of the moving-bed type advanced oxidation circulating treating system of preferred embodiment of the present invention.For example, the moving-bed type advanced oxidation circulation process method of preferred embodiment of the present invention may be implemented in the moving-bed type advanced oxidation circulating treating system of Fig. 2, and it is as being specified in content hereinafter.
Please refer to shown in Figure 2ly, the moving-bed type advanced oxidation circulating treating system of preferred embodiment of the present invention comprises advanced oxidation groove 1, backwash device 2 and pressurizing device 3.This advanced oxidation groove 1 is a moving-bed type advanced oxidation groove.This backwash device 2 and pressurizing device 3 are disposed at the appropriate location of this advanced oxidation groove 1, to constitute this moving-bed type advanced oxidation circulating treating system.The moving-bed type advanced oxidation circulating treating system of preferred embodiment of the present invention has automatic back-washing filter sand function, and has the function of continuous filtration of waste and recycling iron mud.
Referring again to shown in Figure 2, this advanced oxidation groove 1 of preferred embodiment of the present invention is in order to hold filter sand body (for example: quartz sand or pebble), and to form sand filter bed, this filter sand body and function is with filtered wastewater.This advanced oxidation groove 1 comprises waterwater entrance 11, filtered water outlet 12, iron mud discharging mouth 13, first divider, and (for example: the first distribution plate layer that is positioned at the advanced oxidation trench bottom) 14 and second divider (for example: the second distribution plate layer that is positioned at the advanced oxidation trench bottom) 15, and this waterwater entrance 11 is separated corresponding to this filtered water outlet 12.This waterwater entrance 11 is in order to introduce waste water (sulfur acid ferrous acid waste water or interpolation ferrous ion waste water) to this advanced oxidation groove 1, and with waste water through this first divider 14 by this filter sand body, and this filtered water outlet 12 is disposed to the external world in order to general's filtered wastewater from this sand filtration groove, (for example: the mud that contains ferric ion), but it is not in order to limit scope of the present invention in order to discharging iron mud for 13 in this iron mud discharging mouth.
Referring again to shown in Figure 2, the sand filter bed of this advanced oxidation groove 1 of preferred embodiment of the present invention in order to prolongation carry out waste water oxidation reaction process (for example: the reaction of ferrous sulfate, hydrogen peroxide and ozone), to reduce the usage quantity of ferrous sulfate and oxygenant.This backwash device 2 of preferred embodiment of the present invention is disposed in this advanced oxidation groove 1, and it contains this filter sand body (for example: contain ferric ion mud) of oxidized sludge in order to the circulation backwash.
Referring again to shown in Figure 2, this pressurizing device 3 of preferred embodiment of the present invention is disposed at the appropriate location of a side of this advanced oxidation groove 1; Or the moving-bed type advanced oxidation circulating treating system of preferred embodiment of the present invention can select to omit this pressurizing device 3.This pressurizing device 3 has force (forcing) pump or press 30, utilizes this force (forcing) pump or press 30 that oxygenant (for example: hydrogen peroxide and ozone) pressurization is mixed to and filters in the backflow waste water.This pressurizing device 3 is connected to this advanced oxidation groove 1 with transfer lime, so that should pressurize backflow waste water in this second divider 15 is delivered to this advanced oxidation groove 1.
Referring again to shown in Figure 2, this backwash device 2 comprises and rises airway 20, cleans separator tank 21 and sand-washing device 22.This rises airway 20, and (i.e. the Lower Half of the accumulation portion of this filter sand body, for example: the mud that contains ferric ion) bottom of this advanced oxidation groove 1 is delivered to the top of this advanced oxidation groove 1 certainly in order to this filter sand body of the bottom that will be positioned at this sand filtration groove 1.At this moment, this filter sand body enters this cleaning separator tank 21 and sand-washing device 22, so that carry out the backwash of this filter sand body.In this sand-washing device 22, utilizing, filtered wastewater cleans this filter sand body.Then, the backwash water and the iron mud of this filter sand body suitably is disposed to the external world from this cleaning separator tank 21, it can be reached by general known techniques, will not give unnecessary details in this.
The moving-bed type advanced oxidation circulating treating system that Fig. 3 discloses preferred embodiment of the present invention carries out the local enlarged diagram of backwash filter sand body in sand-washing device.Referring again to Fig. 2 and shown in Figure 3, the sand-washing device 22 of this backwash device 2 of preferred embodiment of the present invention has zig-zag washed-out sand passage (not indicating) or crooked shape washed-out sand passage (not illustrating), passes through for this filter sand body.Falling at this filter sand body, (the filter sand body falling direction arrow of Fig. 2 and Fig. 3 can prolong the scavenging period of this filter sand body, so that promote backwash efficiency a) time by this zig-zag washed-out sand passage.
Referring again to Fig. 2 and shown in Figure 3, after of the zig-zag washed-out sand passage flushing of this filter sand body, can carry out separate suspended solid from this filter sand body by the sand-washing device 22 of this backwash device 2.Then, the suspended solids, backwash water and the iron mud that produce of flushing utilizes appropriate device (for example: iron mud e Foerderanlage) this cleaning separator tank 21 is disposed to the external world via this iron mud discharging mouth 13 certainly, and it can be reached by general known techniques, will not give unnecessary details in this.
Referring again to shown in Figure 2, at last, this filter sand body falls by behind the zig-zag washed-out sand passage of this sand-washing device 22, this filter sand body weight of having cleaned is newly returned to the inside of this advanced oxidation groove 1, and this filter sand body that will clean is deposited in the first half of the accumulation portion of this filter sand body, so the filter sand body of this sand filter bed moves from top to bottom and forms portable sand filter bed, so that this filter sand body that the continuous utilization that circulates has again been cleaned is in carrying out filtered wastewater.
Referring again to shown in Figure 2, in this advanced oxidation groove 1, oxygenant and ferrous sulfate react and produce the oxidable organic waste water of hydroxyl radical free radical (OH-), can reduce chemical oxygen demand (COD) (chemical oxygendemand, COD) and biological oxygen demand (biochemical oxygen demand, BOD).In addition, in this advanced oxidation groove 1, pressurized ozone produces fine bubble through release of pressure, and it can increase the reaction times of ferrous sulfate, hydrogen peroxide and ozone.
Referring again to shown in Figure 2, the moving-bed type advanced oxidation circulating treating system of preferred embodiment of the present invention is connected to pH in addition with this advanced oxidation groove 1 and adjusts groove (not illustrating) and iron mud accumulator tank (not illustrating), and this iron mud accumulator tank is connected to mixed slowly groove (not illustrating) and swash plate is floating except that fast heavy pond (not illustrating), it can be reached by general known techniques, will not give unnecessary details in this.
Aforementioned preferred embodiment only illustrates the present invention and technical characterictic thereof, and the technology of this embodiment still can suitably be carried out various essence equivalence modifications and/or substitute mode is implemented; Therefore, interest field of the present invention must be as the criterion with the scope that claim was defined.
Claims (10)
1. moving-bed type advanced oxidation circulation process method is characterized in that this method comprises:
Waste water is directed in the advanced oxidation groove, so that this waste water is carried out the advanced oxidation reaction;
In this advanced oxidation groove, the filter sand body is passed through in this waste water guiding, so that filter this waste water; And
The backwash that in this advanced oxidation groove, this filter sand body circulated, so as to utilize this filter sand body of backwash carry out this waste water of circulating filtration, and reclaim iron mud.
2. moving-bed type advanced oxidation circulation process method according to claim 1 is characterized in that, in backwash process, described filter sand body is by zig-zag washed-out sand passage or crooked washed-out sand passage.
3. moving-bed type advanced oxidation circulation process method according to claim 1 is characterized in that, described advanced oxidation reaction needs to add ferrous sulfate, hydrogen peroxide and ozone.
4. moving-bed type advanced oxidation circulating treating system is characterized in that this system comprises:
The advanced oxidation groove, it is in order to ccontaining waste water, so that this waste water is carried out the advanced oxidation reaction;
Sand filter bed, it is arranged in this advanced oxidation groove, and this sand filter bed has the filter sand body, so that utilize this filter sand body to filter this waste water; And
The backwash device, it is arranged in this advanced oxidation groove so that in this advanced oxidation groove this filter sand body of backwash, and reclaim iron mud;
Wherein this backwash filter sand body circulation be used to filter this waste water.
5. moving-bed type advanced oxidation circulating treating system according to claim 4 is characterized in that, described advanced oxidation reaction needs to add ferrous sulfate, hydrogen peroxide and ozone.
6. moving-bed type advanced oxidation circulating treating system according to claim 5 is characterized in that, described hydrogen peroxide and ozone utilize pressurizing device to mix and is added to described waste water.
7. moving-bed type advanced oxidation circulating treating system according to claim 4 is characterized in that, utilizes gas-lift pipe that described filter sand body is moved up and down the circulation backwash in the described sand filtration groove.
8. moving-bed type advanced oxidation circulating treating system according to claim 4, it is characterized in that, described backwash device comprises sand-washing device, and this sand-washing device has zig-zag washed-out sand passage or crooked shape washed-out sand passage, in backwash process, described filter sand body is by this zig-zag washed-out sand passage or crooked washed-out sand passage.
9. moving-bed type advanced oxidation circulating treating system according to claim 4 is characterized in that, described advanced oxidation groove is connected to pH and adjusts groove and iron mud accumulator tank.
10. moving-bed type advanced oxidation circulating treating system according to claim 9 is characterized in that, described iron mud accumulator tank is connected to mixed slowly groove and swash plate is floating except that fast heavy pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010572545 CN102086070B (en) | 2010-12-03 | 2010-12-03 | Moving bed type advanced cyclic oxidation treatment method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010572545 CN102086070B (en) | 2010-12-03 | 2010-12-03 | Moving bed type advanced cyclic oxidation treatment method and system |
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| Publication Number | Publication Date |
|---|---|
| CN102086070A true CN102086070A (en) | 2011-06-08 |
| CN102086070B CN102086070B (en) | 2013-08-07 |
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ID=44098098
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010572545 Expired - Fee Related CN102086070B (en) | 2010-12-03 | 2010-12-03 | Moving bed type advanced cyclic oxidation treatment method and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2009368C2 (en) * | 2012-08-27 | 2014-03-04 | Advanced Waste Water Solutions B V | Method and device for treating water comprising degradable organic matter. |
| CN109912008A (en) * | 2019-03-05 | 2019-06-21 | 博天环境集团股份有限公司 | A kind of suspension bed catalytic ozonation reactor and its application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2101518U (en) * | 1991-06-25 | 1992-04-15 | 济南市水处理技术实验所 | Sand filter for continuous vulcanizing bed |
| CN201264951Y (en) * | 2008-09-11 | 2009-07-01 | 帕克环保技术(上海)有限公司 | Sand filtering type Fenton strong oxidation treatment apparatus |
| CN201578926U (en) * | 2009-09-17 | 2010-09-15 | 曹成 | Fenton automatic sand filter |
-
2010
- 2010-12-03 CN CN 201010572545 patent/CN102086070B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2101518U (en) * | 1991-06-25 | 1992-04-15 | 济南市水处理技术实验所 | Sand filter for continuous vulcanizing bed |
| CN201264951Y (en) * | 2008-09-11 | 2009-07-01 | 帕克环保技术(上海)有限公司 | Sand filtering type Fenton strong oxidation treatment apparatus |
| CN201578926U (en) * | 2009-09-17 | 2010-09-15 | 曹成 | Fenton automatic sand filter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2009368C2 (en) * | 2012-08-27 | 2014-03-04 | Advanced Waste Water Solutions B V | Method and device for treating water comprising degradable organic matter. |
| CN109912008A (en) * | 2019-03-05 | 2019-06-21 | 博天环境集团股份有限公司 | A kind of suspension bed catalytic ozonation reactor and its application |
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| Publication number | Publication date |
|---|---|
| CN102086070B (en) | 2013-08-07 |
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Granted publication date: 20130807 Termination date: 20211203 |