CN103626360A - Advanced treatment method of integrated catalytic ozonation-biological aerated filter water - Google Patents
Advanced treatment method of integrated catalytic ozonation-biological aerated filter water Download PDFInfo
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Abstract
The invention discloses a method for treating water by an integrated catalytic ozonation-biological aerated filter device. The method comprises the steps of mixing water from a water inlet water pump with ozone which comes from an ozone generation system and contains oxygen in a main pipeline of waste water, entering the mixture evenly into a catalytic ozonation zone through a filter plate which is arranged at the bottom of a catalytic ozonation reaction zone, wherein the upper end of a catalytic ozonating agent ceramsite is filled with a common biological ceramsite, wherein the filling height of the catalytic ozonating agent ranges 0.3n to 1m; and thoroughly oxidizing and decomposing the waste water and the ozone under the catalytic action of the catalytic ozonating agent ceramsite in the catalytic ozonation zone and then flowing up to the upper biological aerated filter. According to the invention, nonbiodegradable organic matters in water are destructed and treated through catalytic ozonation pretreatment and then converted into biodegradable organic matters, and further biochemically treated by using the biological aerated filter; as a result, the advantages of the biological aerated filter are brought into play thoroughly and the waste water containing the biodegradable organic matters are effectively treated.
Description
Technical field
The present invention relates to water treatment field, specifically utilize catalyzed oxidation and the BAF integral water treating method of ozone, ozone, the method is applied to process micro-polluted water, waste water, particularly contains the advanced treatment field of refractory organic waste water.
Background technology
Ozone has extremely strong oxidation susceptibility, and its oxidation capacity is only second to fluorine, higher than chlorine and potassium permanganate.Strong oxidizing property based on ozone, and can in the short period of time, decompose voluntarily in water, there is no secondary pollution, be desirable water treatment Green Oxidant.At present, aspect many in water treatment field of ozone technology, obtained application.Ozone not only has very strong sterilization, in can also oxidation removal water, be difficult to biodegradable pollution substance, if but use separately ozone, often ozone dosage is large, and the utilization ratio of ozone is low, and required expense is high, less economical, when using ozone catalytic agent, can effectively improve the oxidation efficiency of ozone, improve ozone oxidation to organic oxidation removal rate.
BAF (BAF) technique is mainly used in the advanced treatment of wastewater of lower concentration and the pre-treatment of the micro-pollution of former water, as city domestic sewage is processed, and low-concentration industrial sewage disposal, the former water pretreatment of feedwater etc.It is a kind of microorganism contact growing system, by being attached to the absorption, degraded, oxidation of the microorganism on filler, the effect such as synthetic, removes dissolved matter biodegradable and that utilize.The method integrates the feature of sewage treatment aeration tank and feedwater rapid filter, the use of the particulate filler of high-specific surface area has not only increased microbial biomass, and microbic activity is high, make waste water energy fully effectively contact with the microorganism of filling surface simultaneously, thereby make the general traditional biologic treating technique of BAF have higher processing efficiency.The maximum feature of BAF is integrate bio-oxidation and hold back suspended solids, has saved follow-up secondary sedimentation basins, makes treatment process simplify under the prerequisite that guarantees treatment effect.In addition, biological aerated filter process organism volumetric loading is high, hydraulic load is large, and hydraulic detention time is short, energy consumption and running cost is low and guarantee the feature of higher effluent quality.But BAF is to containing the removal limited of refractory organic Wastewater Pollutant, to containing solvability, and the removal that is difficult to again biological degradation pollutent is advanced treatment of wastewater, a difficult problem of middle water reuse.
The patent of invention of applicant's application in 2007: the patent No. is ZL200710028632.9, title is integral type ozone and aeration biological filtering pool water treatment apparatus and method thereof, it is applicant's achievement in research in early stage, in this contrive equipment, BAF is positioned at the top of ozone contact reaction chamber, and the filter plate by BAF is communicated with ozone contact reaction chamber; Ozone fully mixes with waste water in water inlet pipe; Ozone generation system is for making partial oxidation in air or in pure oxygen be converted into the ozonizer of ozone by silent discharge method.Water in the method after ozone pre-treatment evenly enters BAF by the filter plate of the BAF at top, ozone reaction chamber, and the residence time of processing in BAF is 1～4 hour.Utilize this technology can make the waste water after processing reach reuse standard; Reach processing cost low, the result that treatment effect is good, and by ozone oxidation, can not feed water and bring other inorganic impurity except dissolved oxygen, and dissolved oxygen can, by the biological utilisation of BAF, make both play synergy.But the ozone oxidation efficiency of this patent, ozone oxidation rate of decomposition need further to be improved, and this device has much room for improvement to ozone fluctuation of load adaptability, and the stability for the treatment of effect needs to be further improved.
Summary of the invention
The object of the invention is to further promote the effect of prior art, provide that a kind of ozone oxidation efficiency is high, ozone oxidation rate of decomposition is fast, to ozone fluctuation of load better adaptability, the deep treatment method of integrated ozone catalyzed oxidation-BAF water that treatment effect is more stable.
The present invention is on the basis of the water treatment device of patent of invention " integrated ozone and aeration biological filtering pool water treatment apparatus and method thereof (ZL200710028632.9) ", by the haydite bottom in integrated ozone-BAF, in ozone contact reaction region, increase ozone oxidation catalyst, further improve ozone oxidation ability, to improve the hardly degraded organic substance ability in water of removing, simultaneously also can be under the effect of ozone catalytic agent, improve the decomposition rate of ozone, thereby improve integrated apparatus to ozone concn load and impact resistance.
Object of the present invention is achieved through the following technical solutions:
Integrated ozone catalyzed oxidation aeration biological filter device is processed the method for water: from the water of water inlet water pump with mix in the main pipeline of waste water from the ozone that is mixed with oxygen in ozone generation system, by being located at the filter plate of bottom, ozone catalytic reaction zone, evenly enter catalytic ozonation district, in catalytic ozonation agent haydite upper end, load common biological ceramic particle; The loading height of catalytic ozonation agent is 0.3m～1m; The filling of common biological ceramic particle is highly 2～3m; Waste water and ozone after abundant oxygenolysis, above flow to the BAF on top in ozone catalytic reaction zone under the katalysis of catalytic ozonation agent haydite; The add-on of ozone is that the mass ratio of COD in ozone and pending water is 0.05～1:1, and waste water is 1～2 hour in the ozone catalytic reaction zone reaction times; The residence time of processing in BAF is 1～4 hour, finally by effluent weir, is discharged.
Further, the described residence time of processing in BAF is 2～3 hours.The particle diameter of described catalytic ozonation agent haydite is 5～8mm, and density is 0.8～1.6g/cm
3.The particle diameter of described common biological ceramic particle is 3～5mm, and density is 0.5～1.2g/cm
3.Described ozone produces for the ozone generation system that makes partial oxidation in air or pure oxygen be converted into ozone by silent discharge method.
The present invention compared with prior art, has the following advantages and beneficial effect:
1, the present invention adopts catalytic ozonation pre-treatment to destroy the organism of processing difficult for biological degradation in water, be translated into biodegradable organism, recycling BAF is carried out biochemical treatment to it, give full play to the advantage of BAF, make effectively to be processed containing the waste water of refractory organic.
2, the present invention has improved the catalytic efficiency of ozone, has accelerated the decomposition of ozone in water, is more conducive to protect biomass and the biological activity in BAF bio-oxidation district.
3, catalytic ozonation agent of the present invention, does not discharge with waste water, can recycle, easy to use, reduces secondary pollution, has improved ozone utilising efficiency, thereby has reduced running cost.
4, the present invention adopts the integrated ozone BAF of catalysis haydite and ordinary ceramsite combination can bear larger ozone concn than common integrated ozone BAF, has improved the anti impulsion load ability of system.
5, due to the difference of catalytic ozonation agent and common biological ceramic particle density and particle diameter, guarantee that integral system is after back flushing, still can guarantee that ozone catalytic agent is distributed in the bottom of biological ceramic particle, in integrated reactor bottom, form and act as main ozone oxidation district with catalytic ozonation; It on reactor top, is the bio-oxidation district of BAF.Both guarantee the catalytic effect of catalysis haydite, utilized again the low feature of ordinary ceramsite cost, reduced cost of investment.In same reactor, realize catalytic ozonation and biochemical action.
Accompanying drawing explanation
Fig. 1 is the structural representation of integral type catalytic ozonation BAF water treatment device.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated, but embodiments of the present invention are not limit so.
As shown in Figure 1, integrated ozone catalyzed oxidation BAF water treatment device, comprises into water water pump 1, ozone generation system 6, catalytic ozonation reaction zone 8, BAF 9 effluent weirs 10; The pipeline that connects water inlet water pump 1 water-in is provided with the first valve 2, and water inlet water pump 1 is connected with the distribute water and air device of 8 lower ends, catalytic ozonation reaction zone by main pipeline; Ozone generation system 6 is connected with main pipeline by the 3rd valve 5; On main pipeline, be provided with successively rate of flow meter 3, the second valve 4 and the 4th valve 7, the pipeline that ozone generation system 6 is connected with main pipeline is provided with tensimeter 12; BAF 9 is positioned at the top of catalytic ozonation reaction zone 8, by the filter plate bottom BAF, is communicated with catalytic ozonation reaction zone 8, and effluent weir 10 is arranged on BAF 9 tops, and the water after processing is finally discharged by effluent weir 10; Filter plate bottom enters the pending waste water fully contacting with ozone, and ozone is directly introduced in the main pipeline of waste water.Ozone generation system 6 is for making partial oxidation in air or pure oxygen be converted into the ozonizer of ozone by silent discharge method.
Lower end filling catalytic ozonation agent haydite in catalytic ozonation reaction zone 8, loads common biological ceramic particle in catalytic ozonation agent haydite upper end; The loading height of catalytic ozonation agent is 0.3m～1m; The filling of common biological ceramic particle is highly 2～3m.The particle diameter of catalytic ozonation agent haydite is 5～8mm, and density is about 0.8～1.6g/cm
3; The particle diameter of common biological ceramic particle is 3～5mm, and density is about 0.5～1.2g/cm
3, due to the difference of density difference and particle diameter, guarantee that integral system, after back flushing, still can guarantee that ozone catalytic agent is distributed in the bottom of biological ceramic particle.
The catalytic ozonation agent haydite with ozone catalytic effect adopting in the present invention is to make in the patent of invention " a kind of preparation method of ceramsite catalyst of containing metal oxide particulate (application number 201310268105.0) " of application on June 28th, 2013 according to applicant.Adopt conventional method, first utilize flyash, kaolin, the raw material that swelling agent is produced as haydite, by sugar-coat draft machine, prepare the haydite materials core that particle diameter is 1～2.5mm, before raw material core does not dry burning, in preparing the raw material powder of haydite, spray into and add manganous sulfate, rose vitriol, ferric sulfate, the salt such as ferrous sulfate, the salts solution being made into is as binding agent, add sugar-coat draft machine, the haydite materials conventional with other mixes, be attached to original haydite materials core surface, haydite materials nuclear particle continues to be increased to the little ball of particle diameter 5～8mm, then at 1000-1250 ℃, dry and burn, make the catalytic ozonation catalyzer that catalytic ozonation is used.Common biological ceramic particle selects flyash, kaolin, swelling agent as raw material, and at 900～1200 ℃, sintering obtains.
Utilize above-mentioned integrated ozone catalyzed oxidation aeration biological filter device to process the method for water: from the water of water inlet water pump 1 with mix in the main pipeline of waste water from the ozone that is mixed with oxygen in ozone generation system 6, by being located at the filter plate of 6 bottoms, ozone catalytic reaction zone, evenly enter catalytic ozonation district, in catalytic ozonation district, in catalytic ozonation agent haydite upper end, load common biological ceramic particle; The loading height of catalytic ozonation agent is 0.3m～1m; The filling of common biological ceramic particle is highly 2～3m; Waste water and ozone after abundant oxygenolysis, above flow to the BAF 9 on top in ozone catalytic reaction zone under the katalysis of catalytic ozonation agent haydite; The add-on of ozone is that the mass ratio of COD in ozone and pending water is 0.05～1:1, and waste water is 1～2 hour in the ozone catalytic reaction zone reaction times; The residence time of processing in BAF 9 is 1～4 hour, finally by effluent weir, is discharged.The method is first utilized catalytic ozonation partial organic substances, improve the biodegradability (the organic content that available biological method degraded is removed) of organic pollutant, and then utilize Treatmeat Process of Aeration Biofiler, refractory organic is removed from waste water.
Embodiment 1
Adopt integrated ozone catalyzed oxidation BAF water treatment device Dui Mou printing and dyeing mill secondary biochemical effluent to carry out advanced treatment, bottom (catalytic ozonation district) is catalytic ozonation agent filler, top covers common biological ceramic particle, and filter tank is upflow type aerating biological filter.Catalytic ozonation agent haydite is according to 201310268105.0 embodiment 4 preparations, the haydite that production particle diameter is 6～7mm; Common biological ceramic particle selects flyash, kaolin, swelling agent as raw material, and at 900～1200 ℃, sintering obtains; Wherein the loading height of catalytic ozonation agent is about 1m; The filling of common biological ceramic particle is highly about 2.5m; It is 5t/h that this embodiment processes the water yield, and ozone dosage and COD mass ratio are 0.5:1.Ozone is 2 hours in the reaction times of catalytic oxidation chamber, waste water after ozone pre-treatment enters the BAF of upper end, catalytic ozonation district, the BAF residence time is 3 hours, the average 180mg/L of COD of former water inlet, after processing, COD value is 30mg/L, and COD clearance is 83.3%.The former integrated ozone BAF of comparing, water outlet COD is 40mg/L, COD clearance has improved 5.5%, this is technical in advanced treatment of wastewater is an extraordinary effect promoting, achieve noticeable achievement, and be that the COD value of the water after processing is down to 30mg/L, promoted by a relatively large margin the quality of water.
Because ozone catalytic agent is higher than common biological ceramic particle cost, the catalytic ozonation agent of selecting and the difference of common biological ceramic particle density and particle diameter, guarantee that integral system is after back flushing, still can guarantee that ozone catalytic agent is distributed in the bottom of biological ceramic particle, in integrated reactor bottom, form and act as main ozone oxidation district with catalytic ozonation; It on reactor top, is the bio-oxidation district of BAF.This technology has been utilized ozone catalytic agent to greatest extent, has reduced cost of investment, has realized the co-treatment of catalytic ozonation and biochemical action in same reactor simultaneously, also can save sewage disposal space.
Embodiment 2
Adopt integrated ozone catalyzed oxidation-BAF water treatment method to carry out advanced treatment to certain paper mill secondary biochemical effluent, the water yield is 10t/h.Bottom (catalytic ozonation district) is catalytic ozonation agent filler, and top covers common biological ceramic particle, and filter tank is upflow type aerating biological filter.Ozone dosage and COD mass ratio are 0.5:1, and catalytic ozonation agent haydite is with reference to 201310268105.0 embodiment 3 preparations, the haydite that production particle diameter is 5～6mm; Common biological ceramic particle selects flyash, kaolin, swelling agent as raw material, and at 900～1200 ℃, sintering obtains; Wherein the loading height of catalytic ozonation agent is 0.9m; The filling of common biological ceramic particle is highly about 2.5m; Ozone is 1 hour in the reaction times of catalytic oxidation chamber, waste water after ozone pre-treatment enters the BAF of upper end, O3 contacted oxidation chamber, the BAF residence time is 2 hours, the average 120mg/L of COD of former water inlet, after processing, COD value is 19mg/L, COD clearance is 84.2%, the former integrated ozone BAF of comparing, water outlet COD is 25mg/L, and COD clearance has improved 5%, has good treatment effect.
Adopt integrated ozone catalyzed oxidation-BAF water treatment method to process certain waterworks micro-polluted water, the water yield is 10t/h.Bottom (catalytic ozonation district) is catalytic ozonation agent filler, and top covers common biological ceramic particle, and filter tank is upflow type aerating biological filter.Ozone dosage and COD mass ratio are 0.1:1, and catalytic ozonation agent haydite is according to 201310268105.0 embodiment 4 preparations, the haydite that production particle diameter is 5～6mm; Common biological ceramic particle selects flyash, kaolin, swelling agent as raw material, and at 900～1200 ℃, sintering obtains; Wherein the loading height of catalytic ozonation agent is 1m; The filling of common biological ceramic particle is highly 2m; Ozone is 1 hour in the reaction times of catalytic oxidation chamber, waste water after ozone pre-treatment enters the BAF of upper end, O3 contacted oxidation chamber, the BAF residence time is 1 hour, the average 35mg/L of COD of former water inlet, after processing, COD value is 12mg/L, and COD clearance is 65.7%.The former integrated ozone BAF of comparing, water outlet COD is 17mg/L, the former integrated ozone BAF of comparing, water outlet COD is 12mg/L, COD clearance has improved 14.3%, has good treatment effect.
Claims (5)
1. the deep treatment method of integrated ozone catalyzed oxidation-BAF water, it is characterized in that: from water inlet water pump water and from the ozone that is mixed with oxygen in ozone generation system, in the main pipeline of waste water, mix, by being located at the filter plate of bottom, ozone catalytic reaction zone, evenly enter catalytic ozonation district, in catalytic ozonation agent haydite upper end, load common biological ceramic particle; The loading height of catalytic ozonation agent is 0.3m～1m; The filling of common biological ceramic particle is highly 2～3m; Waste water and ozone after abundant oxygenolysis, above flow to the BAF on top in ozone catalytic reaction zone under the katalysis of catalytic ozonation agent haydite; The add-on of ozone is that the mass ratio of COD in ozone and pending water is 0.05～1:1, and waste water is 1～2 hour in the ozone catalytic reaction zone reaction times; The residence time of processing in BAF is 1～4 hour, finally by effluent weir, is discharged.
2. the deep treatment method of integrated ozone catalyzed oxidation-BAF water according to claim 1, is characterized in that: the described residence time of processing in BAF is 2～3 hours.
3. integrated ozone catalyzed oxidation aeration biological filter device according to claim 1 is processed the method for water, it is characterized in that: the particle diameter of described catalytic ozonation agent haydite is 5～8mm, and density is 0.8～1.6g/cm
3.
4. the deep treatment method of integrated ozone catalyzed oxidation-BAF water according to claim 1, is characterized in that: the particle diameter of described common biological ceramic particle is 3～5mm, and density is 0.5～1.2g/cm
3.
5. the deep treatment method of integrated ozone catalyzed oxidation-BAF water according to claim 1, is characterized in that: described ozone produces for the ozone generation system that makes partial oxidation in air or pure oxygen be converted into ozone by silent discharge method.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104045206A (en) * | 2014-06-06 | 2014-09-17 | 南昌大学 | UV (ultraviolet)/O3+BAF (biological aerated filter) advanced oxidation sewage treatment facility |
| CN104193114A (en) * | 2014-09-18 | 2014-12-10 | 广东溢达纺织有限公司 | Sewage treatment method and sewage treatment system |
| CN104261640A (en) * | 2014-10-24 | 2015-01-07 | 中国地质大学（北京） | Treatment equipment of non-degradable organic wastewater with high concentration |
| CN104876395A (en) * | 2015-05-14 | 2015-09-02 | 哈尔滨工业大学 | Two-stage deep-bed upward flow composite filter material biological filter and method for treating low-temperature high-ammonium-nitrogen polluted water by utilizing same |
| CN105330099A (en) * | 2015-10-27 | 2016-02-17 | 中国环境科学研究院 | Integrated wastewater treatment device and petrochemical two-level effluent water treatment method |
| CN110357354A (en) * | 2019-07-16 | 2019-10-22 | 江西沄沐环保科技有限公司 | A kind of Wastewater from Pig Farm processing method |
| CN112777882A (en) * | 2021-02-22 | 2021-05-11 | 北京中科康仑环境科技研究院有限公司 | Manganese sand-ozone integrated BAF system and corresponding wastewater treatment method |
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| CN101070216A (en) * | 2007-06-18 | 2007-11-14 | 华南理工大学 | Integrated ozone and aeration biological filtering pool water treatment apparatus and method |
| CN103331170A (en) * | 2013-06-28 | 2013-10-02 | 华南理工大学 | Ceramsite catalyst containing metallic oxide particles as well as preparation method and application thereof |
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| US20070060472A1 (en) * | 2003-04-29 | 2007-03-15 | Johnson Matthey Public Limited Company | Manganese ozone decomposition catalysts and process for its preparation |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045206A (en) * | 2014-06-06 | 2014-09-17 | 南昌大学 | UV (ultraviolet)/O3+BAF (biological aerated filter) advanced oxidation sewage treatment facility |
| CN104193114A (en) * | 2014-09-18 | 2014-12-10 | 广东溢达纺织有限公司 | Sewage treatment method and sewage treatment system |
| CN104261640A (en) * | 2014-10-24 | 2015-01-07 | 中国地质大学（北京） | Treatment equipment of non-degradable organic wastewater with high concentration |
| CN104876395A (en) * | 2015-05-14 | 2015-09-02 | 哈尔滨工业大学 | Two-stage deep-bed upward flow composite filter material biological filter and method for treating low-temperature high-ammonium-nitrogen polluted water by utilizing same |
| CN105330099A (en) * | 2015-10-27 | 2016-02-17 | 中国环境科学研究院 | Integrated wastewater treatment device and petrochemical two-level effluent water treatment method |
| CN110357354A (en) * | 2019-07-16 | 2019-10-22 | 江西沄沐环保科技有限公司 | A kind of Wastewater from Pig Farm processing method |
| CN112777882A (en) * | 2021-02-22 | 2021-05-11 | 北京中科康仑环境科技研究院有限公司 | Manganese sand-ozone integrated BAF system and corresponding wastewater treatment method |
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Application publication date: 20140312 |