CN102642911A - Advanced oxidation treatment device and advanced oxidation treatment process of refractory organic wastewater - Google Patents
Advanced oxidation treatment device and advanced oxidation treatment process of refractory organic wastewater Download PDFInfo
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- CN102642911A CN102642911A CN2012101309992A CN201210130999A CN102642911A CN 102642911 A CN102642911 A CN 102642911A CN 2012101309992 A CN2012101309992 A CN 2012101309992A CN 201210130999 A CN201210130999 A CN 201210130999A CN 102642911 A CN102642911 A CN 102642911A
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Abstract
The invention aims at providing an advanced oxidation treatment device and an advanced oxidation treatment process of refractory organic wastewater, which are low in energy consumption, rapid in reaction speed, high in pollutant removal rate and low in operation cost. The device comprises a Fenton oxidizing tower, an oxidant feeding system and a catalyst feeding system, the Fenton oxidizing tower is a main device of the advanced oxidation treatment device, and the oxidant feeding system and the catalyst feeding system are respectively connected with multifunctional ejectors on two water inlet pipes of the Fenton oxidizing tower. The advanced oxidation treatment device and the advanced oxidation treatment process can treat refractory substances thoroughly, and chemical oxygen demand (COD) concentration of outlet water can reach below 50mg/L stably.
Description
Technical field
The invention belongs to field of waste water treatment, be specifically related to a kind of advanced oxidation treatment unit and technology of advanced treatment organic wastewater with difficult degradation thereby.
Background technology
Using high-level oxidation technology to handle waste water, is a kind of important waste water advanced treatment technology, can be used for handling organic wastewater with difficult degradation thereby.High-level oxidation technology is of a great variety, comprises photochemical oxidation, photochemical catalytic oxidation, wet oxidation, homogeneous catalysis oxidation, heterogeneous catalytic oxidation etc.The Fenton method belongs to wet oxidation to studying more a kind of high-level oxidation technology at present, has broad prospects.The Fenton method is a kind of employing H
2O
2Be oxygenant, Fe
2+Be the homogeneous catalysis oxidation style of catalyzer, the OH that produces in the reaction is the very strong radical of a kind of oxidation capacity, the organism in the ability oxidized waste water, thereby the colourity and the COD concentration of reduction waste water.Compare other advanced oxidation processes, the Fenton method has that operating process is simple, reactant is easy to get, expense is low, need not complex apparatus, can not decompose produce new objectionable impurities, to follow-up processing toxicological harmless effect, advantage such as environmentally friendly.And traditional F enton method treatment technology mainly adopts the form of pond body, this method exist reaction efficiency low, pollute the shortcoming that clearance is low, running cost is higher.
The Chinese patent document of publication number CN1876577A (application number 200510026670.1) relates to a kind of method of catalytic oxidation treatment of high concentration waste water, and its method is: get into waste water at storage tank through pretreated high-concentration waste water, get into the mixed flow device through secondary filter; The stoste of acid storage tank and storage tank is imported respectively and is processed the hypochlorous anhydride aqueous solution after the chlorine dioxide generator internal reaction produces dioxide peroxide; Being delivered to the mixed flow device mixes the back and flows into the catalyzed oxidation tower that the bottom is placed with the composite catalyst of two-phase catalytic oxidation treatment waste water and carry out catalytic oxidation with the interior air of tower with high-concentration waste water; Processing waste water that the catalyzed oxidation tower comes out flows into current stabilizer, gets into the tubular type neutralizer then the waste water pH7-8 that neutralizes is flowed into subsequent processing device again.
The Chinese patent document of Granted publication CN201376913Y (application number 200920140680.1) discloses the heterogeneous wastewater treatment oxidizing tower of a kind of upflowing; Tower mainly contains three parts and constitutes; Top of tower one side is provided with inlet flume and 2 circulation grooves, and the two bottom communicates, and opposite side is provided with the overflow effluent trough; The tower middle part is empty main body, and tower bottom is provided with the rotation water distributing system.But the defective of its existence is at first will former water be reached the inlet flume at top with pump, simultaneously Fenton reagent add the circulating water channel that needs be delivered to the top from the bottom, and then deliver in the tower by the oxidizing tower bottom by water circulating pump, required energy consumption is bigger.And Fenton reagent is delivered to the high-altitude there is certain danger.This oxidizing tower adopts the rotation water distributing system, and in the water distribution process, carrier filler rubs in cyclone water distributor and the tower, can increase the wearing and tearing of equipment, thereby reduces the work-ing life of equipment.
Summary of the invention
The advanced oxidation device that the purpose of this invention is to provide the processing organic wastewater with difficult degradation thereby that a kind of energy consumption is lower, speed of response is fast, pollutants removal rate is high, running cost is low.
Technical scheme of the present invention is: the advanced oxidation treatment unit of organic wastewater with difficult degradation thereby; Comprise Fenton oxidizing tower, oxygenant medicine system and catalyzer medicine system; Said Fenton oxidizing tower is the agent set of this advanced oxidation treatment unit; Said oxygenant medicine system and catalyzer medicine system respectively with two water inlet pipes of Fenton oxidizing tower on the multi-function jet device link to each other; Said oxygenant medicine system mainly is made up of oxygenant grug feeding jar and under meter, and said catalyzer medicine system mainly is made up of catalyzer grug feeding jar and under meter.
Described advanced oxidation treatment unit; Preferred scheme is; Said Fenton oxidizing tower mainly comprises water inlet system, water inlet mixing zone, water distribution system, fluidized bed reaction zone and outlet system, and said water inlet mixing zone is positioned at Fenton oxidizing tower bottom, is water distribution system above it; Said fluidized bed reaction zone is positioned at Fenton oxidizing tower middle part; Fenton oxidizing tower top is an outlet system, and outlet system is made up of solid-liquid separator, effluent weir and rising pipe, and the water inlet pipe of water inlet system links to each other with Fenton oxidizing tower bottom.
Described advanced oxidation treatment unit, preferably scheme is, and said water inlet system mainly is made up of 2 water inlet pipes and intake pump, and said water inlet pipe is provided with the multi-function jet device.
Described advanced oxidation treatment unit, preferably scheme is, and said water distribution system is made up of two-layer porous water distribution uniformity plate, and the water distribution board percentage of open area is 0.2%, and the aperture is not more than 5mm (preferred aperture is 2-4.5mm, more preferably 3.5mm).
Described advanced oxidation treatment unit, preferably scheme is, and said fluidized bed reaction zone is provided with the silica sand carrier filler of handling through grating, and quartz sand particle size is not more than 3mm (preferred quartz sand particle size is 2-3mm, more preferably 2.5mm).
Described advanced oxidation treatment unit; Preferred scheme is; The solid-liquid separator of said outlet system is made up of 2 groups of tilted plates that are parallel to each other, and the angle of inclination of every group of plate is 60 °, and the length of tilted plate is that (length of preferred tilted plate is 800-950mm to 750-1000mm; The length of preferred tilted plate is 900mm), distance between plates is 80mm.
The present invention also provides the technology of utilizing described advanced oxidation treatment unit to handle organic wastewater with difficult degradation thereby, will squeeze into the bottom of Fenton oxidizing tower, H through water inlet pipe by intake pump through the former water that overregulates pH to 2-4
2O
2Mix back bottom by water inlet pipe entering Fenton oxidizing tower, FeSO by the oxygenant medicine system through multi-function jet device and Yuan Shui as oxygenant
4Mix back bottom by water inlet pipe entering Fenton oxidizing tower, former water and H by the catalyzer medicine system through multi-function jet device and Yuan Shui as catalyzer
2O
2And FeSO
4After mix Fenton oxidizing tower bottom water inlet mixing zone, go into fluidized bed reaction zone by the water distribution system water distribution uniformity is laggard, at fluidized bed reaction zone H
2O
2By Fe
2+The .OH that catalytically decomposed generates thoroughly removes the material of difficult degradation in the waste water; Waste water and silica sand carrier filler are after fluidized bed reaction zone travels up to solid-liquid separator; The silica sand carrier is back to fluidized bed reaction zone, and waste water flows out through effluent weir, handles back water and is discharged by rising pipe.
Compared with prior art, the excellent effect of present technique is:
1. the present invention has improved water inlet system, and water inlet system has increased the multi-function jet device, and medicine system directly links to each other with it, makes medicament and waste water thorough mixing, and good mixing effect has been saved the PWR PLT of medicine system simultaneously, saves energy consumption.
2. water distribution system of the present invention adopts double-layer porous water distribution uniformity plate; Compare with the turning spurt water device that existing installation adopts; Water distribution more evenly and be difficult for stopping up, mutual fricative equipment attrition when having reduced the turning spurt water device water distribution simultaneously and between the silica sand solid support material.
3. handle more thoroughly for hard-degraded substance, effluent COD concentration can be stablized and reaches below the 50mg/L.
4. the utilization ratio of oxygenant and catalyzer is high, has reduced the dose that adds of oxygenant and catalyzer, has saved working cost.
5. medicine system can be regulated at any time according to the water quality situation and added dose, saves the medicine consumption, thereby saves running cost.
Description of drawings
Fig. 1 is the advanced oxidation treatment unit structural representation of the organic wastewater with difficult degradation thereby of one of embodiment of the invention.Wherein: 1-Fenton oxidizing tower, 2-oxygenant medicine system, 3-catalyzer medicine system, 4-water inlet system; 5-multi-function jet device, 6-intake pump, 7-water inlet pipe, 8-porous water distribution uniformity plate; The 9-fluidized bed reaction zone, 10-outlet system, 11-solid-liquid separator; 12-effluent weir, 13-rising pipe, the 14-mixing zone that intakes.
Embodiment
Specify technical scheme of the present invention below in conjunction with accompanying drawing and embodiment.
1 one kinds of advanced oxidation devices of handling organic wastewater with difficult degradation thereby of embodiment, structure can mainly comprise Fenton oxidizing tower 1, oxygenant medicine system 2, catalyzer medicine system composition 3 with reference to accompanying drawing 1.
Said Fenton oxidizing tower 1 is this device main body device, mainly comprises water inlet system 4, water inlet mixing zone 14, water distribution system 8, fluidized bed reaction zone 9 and outlet system 10.Said water inlet system 4 mainly is made up of water inlet pipe 7, multi-function jet device 5, intake pump 6.Said multi-function jet device 5 is arranged on the water inlet pipe 7, and said water inlet pipe 7 links to each other with Fenton oxidizing tower 1 bottom.Said water inlet mixing zone 14 is positioned at the bottom of Fenton oxidizing tower 1; Said water distribution system 8 is positioned at into 14 tops, water mixing zone, is made up of two-layer porous water distribution uniformity plate.Said fluidized bed reaction zone 9 is positioned at Fenton oxidizing tower 1 middle part.Said outlet system 10 is positioned at Fenton oxidizing tower 1 top, is made up of solid-liquid separator 11, effluent weir 12 and rising pipe 13.
Said oxygenant medicine system 2 and catalyzer medicine system 3 respectively with two water inlet pipes 7 of Fenton oxidizing tower 1 on multi-function jet device 5 link to each other.
Said porous water distribution uniformity plate percentage of open area is 0.2%, and the aperture is 3.5mm.Said fluidized bed reaction zone is provided with the silica sand carrier filler of handling through grating, quartz sand particle size 2.5mm.The solid-liquid separator 11 of said outlet system is made up of 2 groups of tilted plates that are parallel to each other, and the angle of inclination of every group of plate is 60 °, and the length of tilted plate is 900mm.
Utilize said apparatus to handle the process of organic wastewater with difficult degradation thereby, be described below:
Squeeze into the bottom of Fenton oxidizing tower 1, H through water inlet pipe 7 by intake pump 6 through the former water that overregulates pH to 2-4
2O
2Mix back bottom by water inlet pipe entering Fenton oxidizing tower 1, FeSO through multi-function jet device 5 with Yuan Shui by oxygenant medicine system 2 as oxygenant
4Mix back bottom by water inlet pipe entering Fenton oxidizing tower 1, former water and H through multi-function jet device 5 with Yuan Shui by catalyzer medicine system 2 as catalyzer
2O
2And FeSO
4After mix Fenton oxidizing tower 1 bottom water inlet mixing zone 14, go into fluidized bed reaction zone 9, H by water distribution system 5 water distribution uniformities are laggard
2O
2By Fe
2+The OH that catalytically decomposed generates thoroughly removes the material of difficult degradation in the waste water.Waste water and silica sand carrier filler are after fluidized bed reaction zone 9 travels up to solid-liquid separator 11, and the silica sand carrier is back to fluidized bed reaction zone 9, and waste water flows out through effluent weir 12, handle back water by rising pipe 13 dischargings.
2 one kinds of advanced oxidation devices of handling organic wastewater with difficult degradation thereby of embodiment, but structure reference implementation example 1, but different with embodiment 1 be that said porous water distribution uniformity panel aperture is 5mm.Said fluidized bed reaction zone quartz sand particle size 3mm.The length of said tilted plate is 1000mm.
3 one kinds of advanced oxidation devices of handling organic wastewater with difficult degradation thereby of embodiment, but structure reference implementation example 1, but different with embodiment 1 be that said porous water distribution uniformity panel aperture is 2mm.Said fluidized bed reaction zone quartz sand particle size is 2mm.The length of said tilted plate is 750mm.
Experimental example utilizes embodiment 1 described advanced oxidation device to carry out the experiment of the oxide treatment of organic wastewater with difficult degradation thereby.
This experiment is an example to handle used water difficult to degradate such as paper-making effluent and fine chemistry industry.This experiment waste water is through the biochemical treatment water outlet after anaerobism, the aerobic treatment.The former water COD of paper-making effluent before the biochemical treatment
CrBe 2800～3000mg/L, the former water COD15000～20000mg/L of fine chemistry industry waste water.Experimental result is as shown in the table:
Claims (7)
1. the advanced oxidation treatment unit of organic wastewater with difficult degradation thereby; It is characterized in that; Comprise Fenton oxidizing tower, oxygenant medicine system and catalyzer medicine system; Said Fenton oxidizing tower is the agent set of this advanced oxidation treatment unit; Said oxygenant medicine system and catalyzer medicine system respectively with two water inlet pipes of Fenton oxidizing tower on the multi-function jet device link to each other, said oxygenant medicine system mainly is made up of oxygenant grug feeding jar and under meter, said catalyzer medicine system mainly is made up of catalyzer grug feeding jar and under meter.
2. advanced oxidation treatment unit according to claim 1; It is characterized in that; Said Fenton oxidizing tower mainly comprises water inlet system, water inlet mixing zone, water distribution system, fluidized bed reaction zone and outlet system, and said water inlet mixing zone is positioned at Fenton advanced oxidation tower bottom, is water distribution system above it; Said fluidized bed reaction zone is positioned at Fenton advanced oxidation tower middle part; Fenton oxidizing tower top is an outlet system, and outlet system is made up of solid-liquid separator, effluent weir and rising pipe, and the water inlet pipe of water inlet system links to each other with Fenton oxidizing tower bottom.
3. advanced oxidation treatment unit according to claim 2 is characterized in that, said water inlet system mainly is made up of 2 water inlet pipes and intake pump, and said water inlet pipe is provided with the multi-function jet device.
4. advanced oxidation treatment unit according to claim 2; It is characterized in that said water distribution system is made up of two-layer porous water distribution uniformity plate, porous water distribution uniformity plate percentage of open area is 0.2%; The aperture is not more than 5mm (preferred aperture is 2-4.5mm, more preferably 3.5mm).
5. advanced oxidation treatment unit according to claim 2 is characterized in that, said fluidized bed reaction zone is provided with the silica sand carrier filler of handling through grating, and quartz sand particle size is not more than 3mm (preferred quartz sand particle size is 2-3mm, more preferably 2.5mm).
6. advanced oxidation treatment unit according to claim 2; It is characterized in that; The solid-liquid separator of said outlet system is made up of 2 groups of tilted plates that are parallel to each other, and the angle of inclination of every group of plate is 60 °, and the length of tilted plate is that (length of preferred tilted plate is 800-950mm to 750-1000mm; The length of preferred tilted plate is 900mm), distance between plates is 80mm.
7. handle the technology of organic wastewater with difficult degradation thereby according to the arbitrary described advanced oxidation treatment unit of claim 1-6, it is characterized in that, squeeze into the bottom of Fenton oxidizing tower, H through water inlet pipe by intake pump through the former water that overregulates pH to 2-4
2O
2Mix back bottom by water inlet pipe entering Fenton advanced oxidation tower, FeSO by the oxygenant medicine system through multi-function jet device and Yuan Shui as oxygenant
4Mix back bottom by water inlet pipe entering Fenton advanced oxidation tower, former water and H by the catalyzer medicine system through multi-function jet device and Yuan Shui as catalyzer
2O
2And FeSO
4After mix Fenton advanced oxidation tower bottom water inlet mixing zone; Go into fluidized bed reaction zone by the water distribution system water distribution uniformity is laggard; The material of difficult degradation in the waste water is thoroughly removed, and waste water and silica sand carrier filler are after fluidized bed reaction zone travels up to solid-liquid separator, and the silica sand carrier is back to fluidized bed reaction zone; And waste water flows out through effluent weir, handles back water and is discharged by rising pipe.
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| CN102964005A (en) * | 2012-11-29 | 2013-03-13 | 绍兴县江滨水处理有限公司 | Deep treatment method for printing and dyeing wastewater |
| CN103395908A (en) * | 2013-07-09 | 2013-11-20 | 江南大学 | Series type internal circulation Fenton fluidized-bed oxidizing tower |
| CN103553200A (en) * | 2013-11-15 | 2014-02-05 | 山东省环境保护科学研究设计院 | Fenton oxidation wastewater treatment method and system |
| CN103755106A (en) * | 2014-02-13 | 2014-04-30 | 广州益方田园环保股份有限公司 | Fluidized bed oxidizing tower and treatment process thereof |
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| CN108147522A (en) * | 2018-02-11 | 2018-06-12 | 杭州宸祥环境工程有限公司 | A kind of novel Fenton fluid bed |
| CN109179630A (en) * | 2018-11-09 | 2019-01-11 | 辽阳博仕流体设备有限公司 | A kind of ozonation aerated formula electricity Fenton fluidized bed |
| CN109231415A (en) * | 2018-11-09 | 2019-01-18 | 王德喜 | A kind of Fenton fluidized bed plant based on jet flow water distributor |
| CN109179630B (en) * | 2018-11-09 | 2023-12-05 | 辽阳博仕流体设备有限公司 | Ozone aeration type electro-Fenton fluidized bed |
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Application publication date: 20120822 |