CN102336503B - Biological membrane-photocatalytic integration reaction device for micro pollution raw water pretreatment - Google Patents
Biological membrane-photocatalytic integration reaction device for micro pollution raw water pretreatment Download PDFInfo
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- CN102336503B CN102336503B CN 201110251498 CN201110251498A CN102336503B CN 102336503 B CN102336503 B CN 102336503B CN 201110251498 CN201110251498 CN 201110251498 CN 201110251498 A CN201110251498 A CN 201110251498A CN 102336503 B CN102336503 B CN 102336503B
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Abstract
The invention relates to a biological membrane-photocatalytic integration reaction device for micro pollution raw water pretreatment, which comprises a device body, a water inlet pipeline and a water outlet pipeline, wherein the water inlet pipeline and the water outlet pipeline are communicated with the device body, the device body is separated into a biological membrane biochemical reaction region positioned at the lower part and a photocatalytic reaction region positioned at the upper part through a transverse perforated separation plate, biological filling materials are filled in the biological membrane biochemical reaction region, photocatalytic suspension filling materials are filled in the photocatalytic reaction region, the bottom of the biological membrane biochemical reaction region is provided with the water inlet pipeline, the water inlet pipeline is communicated with raw water through a water pump, and the top of the photocatalytic reaction region is provided with the water outlet pipeline. The biological membrane biochemical reaction and the photocatalytic reaction are integrated into one reaction device, the transverse separation is realized through a middle perforated plate, the flow direction conversion of the water flow is realized through a middle vertical water pass passage, the total degradation efficiency of the reaction device on organic matters can be improved after the two-stage treatment of biological-photocatalytic treatment, simultaneously, the treatment process flow is shortened, and the occupied area is saved.
Description
Technical field
The present invention relates to the pretreatment unit of micro-polluted raw, belong to environmental protection technical field, especially a kind of for the pretreated microbial film of micro-polluted raw-photochemical catalysis integrated reaction device.
Background technology
Micro-polluted raw refers to that drinking water source mainly is subjected to Organic pollutants, and some projects surpass " ground water environment quality standard " (GB3838-2002) required standard of middle III class water body.Pollutant kind contained in this class water is more, character is complicated, but concentration ratio is lower.
Experimental study both domestic and external and actual production result show that conventional water-purifying process is relatively poor to the removal effect of organism in the micro-polluted raw especially dissolved organic matter, concerning many water factories, satisfy output water CODMn and require difficulty bigger less than 3mg/L.In addition, ammonia nitrogen concentration in the many micro-polluted source waters of China usually can reach more than the 3mg/L, considerably beyond " Drinking Water hygienic practice " (GB5749-2006) in the tap water of regulation ammonia nitrogen content be no more than the requirement of 0.5mg/L, this also is the difficult problem that conventional treatment process can not effectively solve.At these problems of micro-polluted source water, the treatment technology that more often adopts of each water factory comprises and sets up pre-treatment, strengthens common process and continuity advanced treatment three parts at present.
Pre-treatment typically refers to before conventional water-purifying process, adopts suitable physics, chemistry and biochemical processing method, and the pollutent in the water is carried out elementary removal, alleviates processed conventionally burden, improves drinking-water quality.
Biochemical treatment is a kind of lower cost, the water technology that operation is ripe, especially aspect the removal of ammonia nitrogen, comparatively ideal effect is being arranged, the photochemical catalytic oxidation rule has good effect to the removal of hardly degraded organic substance in the water, and has characteristics such as energy consumption is low, simple to operate, reaction conditions gentleness.Two kinds of technologies are combined be applied to the pre-treatment of micro-polluted raw, bring into play both synergies, strong oxidation activity species such as the hydroxyl radical free radical that produces by photocatalytic process, superoxide radical, the ammonia nitrogen that not only can effectively the solve micro-polluted raw problem that exceeds standard, and can realize that normal temperature and pressure catalytic oxidation efficiently removes natural organic matter in the water (NOM) and artificial synthetic organic materials (SOC), make organism obtain inorganic mineralising, or improve organic biodegradability, reduce the load of subsequent disposal and the generation of disinfection byproduct (DBP), guarantee safety of drinking water.
Existing investigator make photoactivation-biological series combination treatment process make a return journey and dewater in dissimilar pollutents, as H-acid, soluble cotton, sterilant, EDTA and phenol etc.Photochemical catalytic oxidation can be used as the first step of degradation process, and macromolecular substance is decomposed into small-molecule substance, destroys organic molecular structure, improves the biodegradability of pollution substance.Also there are some investigators to use bio-oxidation-photochemical catalysis integrated technology to come degradation of phenol, pollution substances such as nitrophenols.Bio-oxidation is light-catalyzed reaction as the first step of DeR then.After pollution substance process oxidation degradation, in photo catalysis reactor, carry out further oxidative degradation, until mineralising.But shortcomings such as above-mentioned photochemical catalysis-bio-oxidation series combination technology exists technical process long, and floor space is bigger, and catalytic efficiency is lower.
Summary of the invention
The technical problem to be solved in the present invention is: in order to solve the deficiencies in the prior art, the invention provides a kind of for the pretreated microbial film of micro-polluted raw-photochemical catalysis integrated reaction device, simple in structure, floor space is little, technical process is short, effective to contaminant degradation, the micro-polluted raw treatment unit of easy handling.
The technical solution adopted for the present invention to solve the technical problems is: a kind of for the pretreated microbial film of micro-polluted raw-photochemical catalysis integrated reaction device, has apparatus main body, the suction culvert of communication apparatus main body and outlet pipeline, described apparatus main body is separated into the biomembrane biochemistry reaction zone of below and the light-catalyzed reaction district of top by horizontal perforation dividing plate, filled biomass filler in the biomembrane biochemistry reaction zone, fill the photochemical catalysis floating stuffing in the light-catalyzed reaction district, the bottom of biomembrane biochemistry reaction zone arranges suction culvert, suction culvert is communicated with former water by water pump, and the top in light-catalyzed reaction district sets out water lines.
For improving decontamination effect improving, the first order reaction district and the second order reaction district that have series connection in the described apparatus main body, described first order reaction district and second order reaction district are separated into the biomembrane biochemistry reaction zone of below and the light-catalyzed reaction district of top by horizontal perforation dividing plate, the bottom in first order reaction district arranges suction culvert, the top water outlet in first order reaction district is communicated with the bottom water-in in second order reaction district, suction culvert is communicated with former water by water pump, and the top in second order reaction district sets out water lines.Have two-step purification, biochemistry-photochemical catalysis, biochemistry-photochemical catalysis more effectively improve device to the total degradation efficient of the middle pollutent of former water, reduce the load of subsequent disposal and the generation of disinfection byproduct (DBP), guarantee safety of drinking water.
Be the switching that better realizes current, have between described first order reaction district and the second order reaction district and carry out the vertical water gallery excessively that flow direction switches.Former water enters successively by biomembrane biochemistry reaction zone and light-catalyzed reaction district from the suction culvert of the bottom in first order reaction district, entered the second order reaction district more successively by biomembrane biochemistry reaction zone and light-catalyzed reaction district after passing through the water gallery, finally discharge from the outlet pipeline at the top in second order reaction district, cross the switching that the water gallery has been realized first order reaction district and second order reaction district current.
As preferably, described biologic packing material is polypropylene, and described photochemical catalysis floating stuffing is mainly by polypropylene and nano level TiO
2The oblique rotating porous compounded mix of forming.Filling ratio that can be by adjusting filler is to adapt to the variation of raw water quality.
The density of described biologic packing material and photochemical catalysis floating stuffing is 900-1000kg/m
3, under a certain amount of aeration effect, in water, be fluidized state.
For sufficient oxygen is provided, has the aeration tube of ventilating in biomembrane biochemistry reaction zone and the light-catalyzed reaction district in the described apparatus main body, described aeration tube connects outside gas blower by airduct, and described aeration tube is boring aeration pipe or microporous diaphragm aeration tube.Aeration tube makes filler be fluidized state when improving sufficient oxygen, has improved gas, liquid, solid three-phase mass-transfer efficiency, and the biochemical reaction efficient of biologic packing material and the photocatalysis efficiency of photochemical catalysis floating stuffing all are improved.
For improving the efficient in light-catalyzed reaction district, described apparatus main body top is provided with to the ultraviolet ultraviolet lamp tube of light-catalyzed reaction district radiation.Under ultraviolet lamp tube or solar light irradiation, the TiO of load on the photochemical catalysis floating stuffing
2Excited, produce hole and unbound electron on its filled band and the conduction band respectively, there is the very strong electronic capability that gets in the hole that is produced by light, and can capture TiO
2The organism of particle surface or the electronics in the water finally generate the extremely strong OH free radical of oxidation capacity, make the oxidized decomposition of organism of difficult degradation in the former water.
As preferably, the ultraviolet wavelength that described ultraviolet lamp tube sends is that 254nm, power are adjustable in 36～90W scope.
For ease of the clean and maintenance of device, described apparatus main body bottom has for the blow-down pipe of the former water of emptying and is installed in the switch-valve that control opens and closes on the blow-down pipe.
The invention has the beneficial effects as follows, of the present inventionly for the pretreated microbial film of micro-polluted raw-photochemical catalysis integrated reaction device biomembrane biochemistry reaction and light-catalyzed reaction are integrated in same reaction unit, laterally separate by centre perforation dividing plate, by the vertical switching of crossing water gallery realization flow direction in centre; By biochemistry-photochemical catalysis, after biochemistry-photochemical catalysis two stages for the treatment of, can improve reaction unit to organic total degradation efficient again; Shorten processing technological flow simultaneously, saved floor space.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation that the present invention is used for first embodiment of the pretreated microbial film of micro-polluted raw-photochemical catalysis integrated reaction device;
Fig. 2 is the structural representation that the present invention is used for second embodiment of the pretreated microbial film of micro-polluted raw-photochemical catalysis integrated reaction device.
Among the figure: 1. apparatus main body, 11. first order reaction districts, 12. second order reaction districts, 13. suction culverts,
14. outlet pipeline, 2. perforation dividing plate, 3. biomembrane biochemistry reaction zone, 31. biologic packing materials,
4. light-catalyzed reaction district, 41. photochemical catalysis floating stuffings are 5. crossed the water gallery, 6. aeration tube,
7. ultraviolet lamp tube.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the synoptic diagram of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
Fig. 1 is first embodiment for the pretreated microbial film of micro-polluted raw-photochemical catalysis integrated reaction device of the present invention, has apparatus main body 1, the suction culvert 13 of communication apparatus main body 1 and outlet pipeline 14, apparatus main body 1 is separated into the biomembrane biochemistry reaction zone 3 of below and the light-catalyzed reaction district 4 of top by horizontal perforation dividing plate 2, filled biomass filler 31 in the biomembrane biochemistry reaction zone 3, fill photochemical catalysis floating stuffing 41 in the light-catalyzed reaction district 4, the bottom of biomembrane biochemistry reaction zone 3 arranges suction culvert 13, suction culvert 13 is communicated with former water by water pump, and the top in light-catalyzed reaction district 4 sets out water lines 14.
Have in the apparatus main body 1 to the aeration tube 6 of biomembrane biochemistry reaction zone 3 and the 4 interior ventilations of light-catalyzed reaction district, aeration tube 6 connects outside gas blower by airduct, and aeration tube 6 is boring aeration pipe or microporous diaphragm aeration tube.
Apparatus main body 1 top is provided with to the ultraviolet ultraviolet lamp tube 7 of light-catalyzed reaction district 4 radiation, and the ultraviolet wavelength that ultraviolet lamp tube 7 sends is that 254nm, power are adjustable in 36～90W scope.
Apparatus main body 1 bottom has for the blow-down pipe of the former water of emptying and is installed in the switch-valve that control opens and closes on the blow-down pipe.
First embodiment is the first class purification treatment unit.
Fig. 2 is second embodiment for the pretreated microbial film of micro-polluted raw-photochemical catalysis integrated reaction device of the present invention, has apparatus main body 1, the suction culvert 13 of communication apparatus main body 1 and outlet pipeline 14, have first order reaction district 11 and second order reaction district 12 in the apparatus main body 1, first order reaction district 11 and second order reaction district 12 are separated into the biomembrane biochemistry reaction zone 3 of below and the light-catalyzed reaction district 4 of top by horizontal perforation dividing plate 2.Have between first order reaction district 11 and the second order reaction district 12 and carry out the vertical water gallery 5 excessively that flow direction switches, the bottom in first order reaction district 11 arranges suction culvert 13, suction culvert 13 is communicated with former water by water pump, the top in second order reaction district 12 sets out water lines 14, and first order reaction district 11 top water outlets passed through water gallery 5 and are communicated with the bottom water-in in second order reaction district 12.Arrow points shows water (flow) direction among the figure.
Have in the apparatus main body 1 to the boring aeration pipe 6 of biomembrane biochemistry reaction zone 3 and the 4 interior ventilations of light-catalyzed reaction district, boring aeration pipe 6 connects outside gas blower by airduct.
Apparatus main body 1 top is provided with to the ultraviolet ultraviolet lamp tube 7 of light-catalyzed reaction district 4 radiation, and the ultraviolet wavelength that ultraviolet lamp tube 7 sends is that 254nm, power are adjustable in 36～90W scope.
Apparatus main body 1 bottom has for the blow-down pipe of the former water of emptying and is installed in the switch-valve that control opens and closes on the blow-down pipe.
Second embodiment is the two-step purification treatment unit, is optimum embodiment.Adopt two-stage biological film-photochemical catalysis integrated reaction device pretreating micro-polluted raw water, when raw water flow is 0.09m
3/ h, water inlet COD
MnMean concns is 8.50mg/L, NH
3-N mean concns is 3.83mg/L, and hydraulic detention time is 1h, and ultraviolet lamp power is 54W, and the packing ratio of photochemical catalysis floating stuffing and biologic packing material is 40% o'clock, to COD
Mn, NH
3The average removal rate of-N is respectively 27.5% and 74.3%.
Claims (7)
1. one kind is used for the pretreated microbial film of micro-polluted raw-photochemical catalysis integrated reaction device, has apparatus main body (1), the suction culvert (13) of communication apparatus main body (1) and outlet pipeline (14), described apparatus main body (1) is separated into the biomembrane biochemistry reaction zone (3) of below and the light-catalyzed reaction district (4) of top by horizontal perforation dividing plate (2), the interior filled biomass filler of biomembrane biochemistry reaction zone (3) (31), fill photochemical catalysis floating stuffing (41) in the light-catalyzed reaction district (4), the bottom of biomembrane biochemistry reaction zone (3) arranges suction culvert (13), suction culvert (13) is communicated with former water by water pump, and the top of light-catalyzed reaction district (4) sets out water lines (14); It is characterized in that:
The first order reaction district (11) and second order reaction district (12) that have series connection in the described apparatus main body (1), have between described first order reaction district (11) and second order reaction district (12) and carry out the vertical water gallery (5) excessively that flow direction switches, described first order reaction district (11) and second order reaction district (12) are separated into the biomembrane biochemistry reaction zone (3) of below and the light-catalyzed reaction district (4) of top by horizontal perforation dividing plate (2), the bottom in first order reaction district (11) arranges suction culvert (13), the top water outlet in first order reaction district (11) is communicated with the bottom water-in of second order reaction district (12), suction culvert (13) is communicated with former water by water pump, and the top of second order reaction district (12) sets out water lines (14).
2. as claimed in claim 1 for the pretreated microbial film of micro-polluted raw-photochemical catalysis integrated reaction device, it is characterized in that: described biologic packing material (31) is polypropylene, and described photochemical catalysis floating stuffing (41) is mainly by polypropylene and nano level TiO
2The oblique rotating porous compounded mix of forming.
3. as claimed in claim 2 for the pretreated microbial film of micro-polluted raw-photochemical catalysis integrated reaction device, it is characterized in that: the density of described biologic packing material (31) and photochemical catalysis floating stuffing (41) is 900-1000kg/m
3
4. as claimed in claim 1 for the pretreated microbial film of micro-polluted raw-photochemical catalysis integrated reaction device, it is characterized in that: have in the described apparatus main body (1) to the aeration tube (6) of biomembrane biochemistry reaction zone (3) and light-catalyzed reaction district (4) interior ventilation, described aeration tube (6) connects outside gas blower by airduct, and described aeration tube (6) is boring aeration pipe or microporous diaphragm aeration tube.
5. as claimed in claim 1 for the pretreated microbial film of micro-polluted raw-photochemical catalysis integrated reaction device, it is characterized in that: described apparatus main body (1) top is provided with to the ultraviolet ultraviolet lamp tube of light-catalyzed reaction district (4) radiation (7).
6. as claimed in claim 5 for the pretreated microbial film of micro-polluted raw-photochemical catalysis integrated reaction device, it is characterized in that: the ultraviolet wavelength that described ultraviolet lamp tube (7) sends is that 254nm, power are adjustable in 36 ~ 90W scope.
7. as claimed in claim 1 for the pretreated microbial film of micro-polluted raw-photochemical catalysis integrated reaction device, it is characterized in that: described apparatus main body (1) bottom has for the blow-down pipe of the former water of emptying and is installed in the switch-valve that control opens and closes on the blow-down pipe.
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| CN104147908B (en) * | 2014-07-25 | 2016-07-13 | 李英军 | Biofilm reactor-biological deodorizing tower system locking device and the method processing foul smell |
| CN104211253A (en) * | 2014-08-26 | 2014-12-17 | 常州大学 | Biomembrane-photocatalysis device for substances containing nitrogen in micropollution water body |
| CN105036456A (en) * | 2015-06-13 | 2015-11-11 | 常州大学 | Device for degrading organic matters in micro-polluted raw water by two-stage biomembrane-photocatalytic coupled technique |
| CN105330074B (en) * | 2015-11-30 | 2018-03-20 | 无锡工源机械有限公司 | Airfloat equipment |
| CN106430522A (en) * | 2016-08-30 | 2017-02-22 | 无锡市新都环保科技有限公司 | Photochemical catalytic reaction device for wastewater treatment |
| CN107585969A (en) * | 2017-10-26 | 2018-01-16 | 广东正诚电气科技有限公司 | A kind of tower integrated sewage treating apparatus |
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| CN109133329A (en) * | 2018-08-31 | 2019-01-04 | 江苏新亿源环保科技有限公司 | A kind of preparation method of silver ion modified photocatalytic biofilter material |
| CN110655276A (en) * | 2019-10-17 | 2020-01-07 | 中国电建集团华东勘测设计研究院有限公司 | Overflow type photocatalysis type artificial wetland sewage treatment device and method |
| CN112028401B (en) * | 2020-08-27 | 2022-05-31 | 无锡阿尔美环保科技有限公司 | Application of multilayer composite functional material in industrial circulating water quality stabilization treatment |
| CN117164151A (en) * | 2023-09-18 | 2023-12-05 | 广东绿鑫环保工程有限公司 | Integrated treatment method for nitrification and denitrification reaction |
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| CN101284689B (en) * | 2008-04-08 | 2011-01-05 | 上海师范大学 | Water processing reactor integrating photocatalysis and biological degradation and method thereof |
| CN201737737U (en) * | 2010-06-22 | 2011-02-09 | 上海师范大学 | Airflow driving inner circulation photocatalysis cylindrical water treatment device |
| CN202226749U (en) * | 2011-08-29 | 2012-05-23 | 常州大学 | Biological membrane-photocatalysis integrated reaction device for pretreatment of micro-polluted raw water |
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