CN105174625A - Novel ozone-biological activated carbon integrated advanced wastewater treatment method and device - Google Patents
Novel ozone-biological activated carbon integrated advanced wastewater treatment method and device Download PDFInfo
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- CN105174625A CN105174625A CN201510595972.4A CN201510595972A CN105174625A CN 105174625 A CN105174625 A CN 105174625A CN 201510595972 A CN201510595972 A CN 201510595972A CN 105174625 A CN105174625 A CN 105174625A
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Abstract
The invention discloses a novel ozone-biological activated carbon integrated advanced wastewater treatment method. The method comprises the following steps: (S1) injecting wastewater into an ozone contact oxidation zone, and uniformly supplying ozone gas into a reaction region from the bottom by virtue of a gas distribution device, so as to generate oxidation reaction between ozone gas and wastewater; (S2) feeding un-reacted ozone gas and wastewater into a catalytic ozonation reaction region, and carrying a TiO2 catalyst by virtue of granular active carbon to generate catalytic ozonation between ozone and pollutants in water, so as to further consume ozone gas fed into wastewater; and (S3) after catalytic ozonation, feeding wastewater, ozone tail gas and the catalyst into a three-phase separation region, discharging the ozone tail gas out of a system through a tail gas collection system, repeatedly utilizing the catalyst sinking into a catalytic oxidation region, and feeding the wastewater rich in dissolved oxygen into a biological activated carbon reaction region.
Description
Technical field
What the present invention relates to is the rapid treating technology of a kind of lower concentration, organic wastewater with difficult degradation thereby, particularly a kind of ozone-biological active carbon Sewage advanced treatment technology be integrated in conjunction with physico-chemical and biological treatment.
Background technology
At present, in trade effluent and city domestic sewage, the kind of pollutent is increasing, and composition is more complicated.These stain disease are after the biochemical process process of routine, although process water water quality is greatly improved, but miscellaneous hardly degraded organic substance in former water, as not high in processing efficiencies such as alkyl benzene sulphonate (ABS), chlorophenol, agricultural chemicals, polychlorobiphenyl, polycyclic aromatic hydrocarbons, Nitro-aromatic Compounds in Different, dyestuffs, still have a large amount of residual in water outlet, potential hazard can be caused to environment and the mankind.
With this simultaneously, China is the country of a water resources critical shortage.In more than 660 city, the whole nation, have more than 400 urban water shortage, wherein 108 is city of severe water shortage.Along with the development rapidly of industrialization and urbanization, resource-type and the dual lack of water feature of water quality type show especially, have become the significant bottleneck of restriction China sustainable development of socio-economy.In order to tackle the contradiction that water resources supply and demand is becoming increasingly acute, mode of increasing income and decreasing expenditure traditionally has been difficult to the root problem solving shortage of water resources.Therefore, develop unconventional water resource and seem very urgent.Urban sewage reutilization is the effective way increasing income and decreasing expenditure, alleviate water pollution, improve the ecological environment, alleviate the contradiction of supply and demand for the water resource and promote urban economy social sustainable development.
For effectively solving the harm of hardly degraded organic substance in reuse water, domestic and international investigator has carried out a large amount of experimental studies, utilizes ozone-BAC process to carry out advanced treatment to stain disease, achieves good treatment effect.In traditional ozone-BAC process, because ozone oxidation and biological activated carbon are provided separately, desirable ozone oxidation effect be obtained, can two kinds of approach be passed through: the catalytic oxidation time increasing ozone dosage or prolongation ozone and stain disease.The increase of ozone dosage means the rising of running cost, and the prolongation of catalytic oxidation time represents the increase of engineering construction investment.How within the shorter catalytic oxidation time, to make full use of quantitative ozone gas, be the key point improving ozone-BAC process treatment effect and promote the application of this engineering.There is intrinsic defect in traditional ozone-BAC process, therefore, set up and have important practical significance based on quick, that efficient ozone utilizes technology ozone biological activated carbon treatment process in this.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the present invention aims to provide a kind of novel ozone based on efficient ozone catalytic oxidation technology-biological activated carbon integration advanced waste treatment method, using ozone oxidation technology, Supported On Granular Activated Carbon nano-TiO
2catalytic oxidation technologies and BAC process, and in conjunction with three phase separation technology, while significantly improving ozone utilising efficiency, improving process water water quality, reduce the processing cost of waste water, the method is easy and simple to handle, operating safety.
To achieve these goals, the technical solution used in the present invention is: a kind of novel ozone-biological activated carbon integration advanced waste treatment method, comprises the steps:
S1 by waste water injection of ozone catalytic oxidation district, and evenly adds ozone gas from bottom by distribution device in reaction zone, ozone gas and waste water generation oxidizing reaction;
Unreacted ozone gas and waste water are sent into catalytic ozonation reaction zone by S2, utilize Supported On Granular Activated Carbon TiO
2catalyzer makes ozone and water pollutant carry out catalytic ozonation, consumes the ozone gas added in waste water further;
Waste water after catalytic ozonation, ozone tail gas and catalyzer are sent into three-phase separation area by S3, ozone tail gas discharges system by tail gas collecting device, catalyzer sinks to the recycling of catalyzed oxidation district, and the waste water being rich in dissolved oxygen then enters biological activated carbon reaction zone;
Small organic molecule after the Accumulation with Activated Carbon ozone oxidation of S4 in biological activated carbon reaction zone, for the raised growth breeding of microorganism provides matrix, and makes waste water be purified.
To achieve these goals, another technical scheme that the present invention adopts is: a kind of novel ozone biological activated carbon integration advanced waste treatment apparatus, comprises ozone oxidation reaction district I, catalytic ozonation district II, three-phase separation area III and biological activated carbon reaction zone IV; Described advanced waste treatment apparatus is followed successively by ozone oxidation reaction district I, catalytic ozonation district II, three-phase separation area III and biological activated carbon reaction zone IV from bottom to top and is interconnected;
Described ozone oxidation reaction district I is provided with measuring apparatus 1, water distribution system, ozonizer and micro-pore aeration system;
Described catalytic ozonation district II is filled with Supported On Granular Activated Carbon TiO
2catalyzer;
By being with the perforated spacer plate of strainer head to isolate between described ozone oxidation reaction district I and catalytic ozonation district II;
Described three-phase separation area III is provided with flow deflector, exhaust collection device and ozone breaker;
Described catalytic ozonation district II is isolated by flow deflector 6 with three-phase separation area III;
Described biological activated carbon reaction zone IV arranges water collecting dike, and inside, biological activated carbon reaction zone IV is filled with gac and microorganism;
Isolated by perforated spacer plate between described three-phase separation area III and biological activated carbon reaction zone IV; Described exhaust collection device, through biological activated carbon reaction zone IV, is connected from top, biological activated carbon reaction zone IV with ozone breaker;
Waste water enters the water distribution system 2 bottom treatment unit through described measuring apparatus 1, and ozone gas is produced by ozonizer 3 and evenly adds in waste water by micro-pore aeration system 4 simultaneously, and in ozone oxidation reaction district I, waste water and ozone carry out oxidizing reaction; Air-water mixture enters catalytic ozonation district II by the perforated spacer plate 5 of band strainer head subsequently, under catalyst action, and the pollutent in the further oxidized waste water of unreacted ozone gas; Subsequently, ozone tail gas, catalyzer and process water enter three-phase separation area III, flow deflector 6 prevents bubble from entering follow-up processing flow, to be collected by ozone tail gas and be delivered to ozone breaker 10 to process ozone gas residual in tail gas, subsequently by exhaust emissions by exhaust collection device 9; Catalyzer precipitates in disengaging zone, process water then enters biological activated carbon reaction zone IV by perforated spacer plate 7, under the dual function of gac and microorganism, the pollutent in waste water is thoroughly removed, the discharger after water collecting dike 8 is collected of the water after process carries out reuse.
Further, described biological activated carbon reaction zone IV is provided with backwash pump 11 and back flushing water distribution system 12, when the biological activated carbon bed in biological activated carbon reaction zone IV occurs to block, utilize backwash pump 11 that backwash water is sent into back flushing water distribution system 12, backwash is carried out to carbon bed.
Advantage of the present invention is: O3 contacted oxidation, catalytic ozonation and biological activated carbon reaction organically integrate by present method and device, enhance treatment scheme, improve treatment effect, reduce processing cost, add the security and stability for the treatment of process.
Present method and the activated carbon supported nano level TiO of application of installation
2catalyzer, solves nano-TiO
2contradiction between the catalytic effect of catalyzer and recycling, accelerates the speed of catalytic ozonation, improves the utilization ratio of ozone, guarantees to process water quality stabilizing.
Present method and device adopt upward flow BAC process, adopt two-stage active carbon filler, and the porosity of bottom macrobead gac is large, for microorganism provides good growing environment, and not easily blocks; Utilize the specific surface area of top small-particle gac super large, the pollutent residual to water quality adsorbs further, ensure that the treatment effect of this technique high-quality.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of a kind of novel ozone of the present invention-biological activated carbon integration advanced waste treatment method.
Fig. 2 is the structural representation of a kind of novel ozone biological activated carbon integration of the present invention advanced waste treatment apparatus.
Wherein: I: ozone oxidation reaction district II: activated carbon catalysis oxidation zone III: three-phase separation area IV: biological activated carbon reaction zone 1. feed water flow gauge 2. is bored a hole the perforated spacer plate 6. director 7. perforated spacer plate 8. water collecting dike 9. exhaust collection device 10. ozone breaker 11. backwash pump 12. back flushing water distribution system of water distribution system 3. ozonizer 4. micro-pore aeration system 5. with strainer head
Embodiment
The present invention is described in detail by following embodiment.But those skilled in the art understand, and following embodiment is not limiting the scope of the invention, any improvement of making on basis of the present invention and change are all within protection scope of the present invention.
A kind of novel ozone as shown in Figure 1-biological activated carbon integration advanced waste treatment method, comprises the steps:
S1 by waste water injection of ozone catalytic oxidation district, and evenly adds ozone gas from bottom by distribution device in reaction zone, ozone gas and waste water generation oxidizing reaction;
Unreacted ozone gas and waste water are sent into catalytic ozonation reaction zone by S2, utilize Supported On Granular Activated Carbon TiO
2catalyzer makes ozone and water pollutant carry out catalytic ozonation, consumes the ozone gas added in waste water further;
Waste water after catalytic ozonation, ozone tail gas and catalyzer are sent into three-phase separation area by S3, ozone tail gas discharges system by tail gas collecting device, catalyzer sinks to the recycling of catalyzed oxidation district, and the waste water being rich in dissolved oxygen then enters biological activated carbon reaction zone;
Small organic molecule after the Accumulation with Activated Carbon ozone oxidation of S4 in biological activated carbon reaction zone, for the raised growth breeding of microorganism provides matrix, and makes waste water be purified.
As shown in Figure 2 invention also provides a kind of novel ozone biological activated carbon integration advanced waste treatment apparatus, comprise ozone oxidation reaction district I; Catalytic ozonation district II; Three-phase separation area III; Biological activated carbon reaction zone IV.Waste water enters the water distribution system 2 bottom treatment unit through measuring apparatus 1, and ozone gas is produced by ozonizer 3 and evenly adds in waste water by aerating system 4 simultaneously, and in ozone oxidation reaction district I, waste water and ozone carry out oxidizing reaction; Air-water mixture enters catalytic ozonation district II by the perforated spacer plate 5 of band strainer head subsequently, under catalyst action, and the pollutent in the further oxidized waste water of unreacted ozone gas; Subsequently, ozone tail gas, catalyzer and process water enter three-phase separation area III, flow deflector 6 can prevent bubble from entering follow-up processing flow, to be collected by ozone tail gas and be delivered to ozone breaker 10 to process ozone gas residual in tail gas, subsequently by exhaust emissions by exhaust collection device 9; Catalyzer precipitates in disengaging zone, process water then enters biological activated carbon reaction zone IV by perforated spacer plate 7, under the dual function of gac and microorganism, the pollutent in waste water is thoroughly removed, the discharger after water collecting dike 8 is collected of the water after process carries out reuse; When biological activated carbon bed occurs to block, utilize backwash pump 11 that backwash water is sent into back flushing water distribution system 12, backwash is carried out to carbon bed, safeguards system is efficient, steady running.
The foregoing is only better enforcement one of the present invention example, be not limited to the present invention, all any amendments, equivalent replacement and improvement etc. made within the present invention's spirit and principle, are all contained within protection scope of the present invention.
Claims (3)
1. novel ozone-biological activated carbon integration advanced waste treatment method, is characterized in that: comprise the steps:
S1 by waste water injection of ozone catalytic oxidation district, and evenly adds ozone gas from bottom by distribution device in reaction zone, ozone gas and waste water generation oxidizing reaction;
Unreacted ozone gas and waste water are sent into catalytic ozonation reaction zone by S2, utilize Supported On Granular Activated Carbon TiO
2catalyzer makes ozone and water pollutant carry out catalytic ozonation, consumes the ozone gas added in waste water further;
Waste water after catalytic ozonation, ozone tail gas and catalyzer are sent into three-phase separation area by S3, ozone tail gas discharges system by tail gas collecting device, catalyzer sinks to the recycling of catalyzed oxidation district, and the waste water being rich in dissolved oxygen then enters biological activated carbon reaction zone;
Small organic molecule after the Accumulation with Activated Carbon ozone oxidation of S4 in biological activated carbon reaction zone, for the raised growth breeding of microorganism provides matrix, and makes waste water be purified.
2. a novel ozone biological activated carbon integration advanced waste treatment apparatus, is characterized in that: comprise ozone oxidation reaction district I, catalytic ozonation district II, three-phase separation area III and biological activated carbon reaction zone IV; Described advanced waste treatment apparatus is followed successively by ozone oxidation reaction district I, catalytic ozonation district II, three-phase separation area III and biological activated carbon reaction zone IV from bottom to top and is interconnected;
Described ozone oxidation reaction district I is provided with measuring apparatus (1), water distribution system (2), ozonizer (3) and micro-pore aeration system (4);
Described catalytic ozonation district II is filled with Supported On Granular Activated Carbon TiO
2catalyzer;
By being with the perforated spacer plate (5) of strainer head to isolate between described ozone oxidation reaction district I and catalytic ozonation district II;
Described three-phase separation area III is provided with flow deflector (6), exhaust collection device (9) and ozone breaker (10);
Described catalytic ozonation district II is isolated by flow deflector (6) with three-phase separation area III;
Described biological activated carbon reaction zone IV is arranged water collecting dike (8), inside, biological activated carbon reaction zone IV is filled with gac and microorganism;
Isolated by perforated spacer plate 7 between described three-phase separation area III and biological activated carbon reaction zone IV; Described exhaust collection device (9), through biological activated carbon reaction zone IV, is connected from top, biological activated carbon reaction zone IV with ozone breaker (10);
Waste water enters the water distribution system (2) bottom treatment unit through described measuring apparatus 1, ozone gas is produced by ozonizer (3) and evenly adds in waste water by micro-pore aeration system (4) simultaneously, and in ozone oxidation reaction district I, waste water and ozone carry out oxidizing reaction; Air-water mixture enters catalytic ozonation district II by the perforated spacer plate (5) of band strainer head subsequently, under catalyst action, and the pollutent in the further oxidized waste water of unreacted ozone gas; Subsequently, ozone tail gas, catalyzer and process water enter three-phase separation area III, flow deflector (6) prevents bubble from entering follow-up processing flow, by exhaust collection device (9) ozone tail gas collected and be delivered to ozone gas residual in ozone breaker (10) process tail gas, subsequently by exhaust emissions; Catalyzer precipitates in disengaging zone, process water then enters biological activated carbon reaction zone IV by perforated spacer plate (7), under the dual function of gac and microorganism, the pollutent in waste water is thoroughly removed, the discharger after water collecting dike 8 is collected of the water after process carries out reuse.
3. a kind of novel ozone biological activated carbon integration advanced waste treatment apparatus according to claim 2, it is characterized in that: described biological activated carbon reaction zone IV is provided with backwash pump (11) and back flushing water distribution system (12), when the biological activated carbon bed in biological activated carbon reaction zone IV occurs to block, utilize backwash pump (11) backwash water to be sent into back flushing water distribution system (12), backwash is carried out to carbon bed.
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Cited By (4)
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| CN106799230A (en) * | 2017-01-16 | 2017-06-06 | 浙江大学 | A kind of charcoal based composite catalyst and its preparation method and application |
| CN112520952A (en) * | 2020-12-18 | 2021-03-19 | 哈尔滨工业大学水资源国家工程研究中心有限公司 | Device for treating high-acidity chemical fiber wastewater by using ozone-activated carbon and using method thereof |
| CN113429010A (en) * | 2021-05-28 | 2021-09-24 | 郑州大学综合设计研究院有限公司 | Ozone and active carbon advanced treatment waste water's device in coordination |
| CN115677020A (en) * | 2022-12-07 | 2023-02-03 | 如东深水环境科技有限公司 | Organic wastewater treatment method and system integrating ozone oxidation and biological activated carbon |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115677020B (en) * | 2022-12-07 | 2023-12-05 | 如东深水环境科技有限公司 | Method for treating organic wastewater by combining ozone oxidation and biological activated carbon |
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