CN101284689B - Water processing reactor integrating photocatalysis and biological degradation and method thereof - Google Patents
Water processing reactor integrating photocatalysis and biological degradation and method thereof Download PDFInfo
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- CN101284689B CN101284689B CN2008100357121A CN200810035712A CN101284689B CN 101284689 B CN101284689 B CN 101284689B CN 2008100357121 A CN2008100357121 A CN 2008100357121A CN 200810035712 A CN200810035712 A CN 200810035712A CN 101284689 B CN101284689 B CN 101284689B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention is a water treatment reactor that integrates photocatalysis and biodegradation, and a processing method thereof. A water treatment reactor integrating photocatalysis and biodegration comprises a photocatalysis plate (3) as the baffle plate between a photocatalysis section (2) at the upper part of the reactor and a biodegradation section (10) at the lower part of the reactor; an upper water hole (1) and a lower water hole (5) are formed on the photocatalysis plate; an ultraviolet source (4) is controlled by a switch and is positioned above the photocatalysis plate (3); a biomembrane carrier (8) is positioned in the biodegradation section (10); a water outlet (6) and a valve are disposed on the vessel wall at the lower edge of the photocatalysis section (2); a water circulation device is arranged on the reactor (9); the photocatalysis plate shields the microbes in the biodegradation section to protect the microbes from being harmed by ultraviolet light; under the joint action of the photocatalyst and the biomembrane, the organic matter that is hard to degrade can greatly increase the rate of water treatment. The reactor is characterized in compact device structure, high efficiency and high speed.
Description
(1) technical field
The present invention is a kind of water technology, comprises reactor and method thereof, particularly relates to adopting a kind of integrated photocatalysis and biological degradation in the water processing reactor and the treatment process thereof of one.
(2) background technology
Present technique belongs to a kind of devices and methods therefor of environmental engineering, biochemical reaction engineering, Environmental Biotechnology, chemical reaction engineering and water treatment.Along with the continuous development of industrial and agricultural production and improving constantly of people's living standard, surface water such as many natural rivers, lake, view waters, even the drinking water source all has been subjected to pollution, major part has all formed eutrophication more or less.Add the random discharging of some trade effluents, cause also containing a large amount of Persistent organic pollutants in many water bodys, formed combined pollution.These pollutions cause natural water bodies such as river, lake and view waters all multi-functionally has been subjected to pollution that destruction, especially drinking water source be subjected to people's ordinary production and life has been caused bigger influence.Therefore the natural water body of indegradable industrial effluent or combined pollution is handled and is repaired just extremely urgent.
At present aspect the natural water body reparation, adopt waterplant to repair both at home and abroad mostly, the characteristics that waterplant is repaired polluted water body are to save the energy, but this method efficient is lower, repairing efficiency is long, especially to the reparation of combined pollution water body.In some river or the waters owing to the needs of considering shipping are not easy to adopt.And, adopt biological method to handle separately for the processing of difficult degradation industrial organic waste water, and efficient is relatively low, and some organic pollutant also has restraining effect to microorganism.
Therefore after having the people to adopt earlier it to be carried out photocatalytic degradation for the improvement of this class water body, carry out subsequent disposal with biological method again.Make these organic compound obtain mineralising, change nontoxic material into.This is because some organic compound through behind the photocatalytic degradation, changes being easy to biodegradable product into.Normally two technology are carried out appropriate combination both at home and abroad at present, promptly in a technology, photochemical catalytic oxidation and biological degradation are carried out in two unit respectively, so photochemical catalysis is a kind of efficient ways of some hardly degraded organic substance being carried out advanced treatment in conjunction with biological treatment.
But the problem here is, does organic wastewater with difficult degradation thereby arrive what degree biodegrade again by photocatalytic degradation? if organic wastewater with difficult degradation thereby is degraded for a long time by photochemical catalysis, its efficient is lower, often can not make the organism permineralization, or cost is very high, from unworkable economically.And the photocatalytic degradation time is not enough, often again microorganism is had restraining effect or from the biological degradation angle, its speed of reaction is very slow.So whether can consider photocatalyst and microbial film are made up, about to photochemical catalysis and biological degradation and be combined into one? utilizing this method that the organic compound of some difficult degradations is carried out photochemical catalysis and microbial film is combined into one organism is degraded.But another problem just occurs here, promptly in the ordinary course of things when adopting TiO
2When organic waste water being carried out photocatalysis treatment, need to adopt the irradiation of strong UV-light as photocatalyst, because the lethal effect of UV-light and radical pair microorganism cells, so photochemical catalysis in the past and biological treatment are all separately carried out.This causes complex disposal processization on the one hand, also makes processing cost increase and the efficient reduction on the other hand.
(3) summary of the invention
The object of the present invention is to provide a kind of existing above shortcomings in photochemical catalysis and the biodegradation technique of utilizing that overcome, a kind of novel water treatment method that is combined as a whole and corresponding reactor are provided, realize efficient quick and convenient reparation combined pollution water body and handle the trade effluent that contains hardly degraded organic substance.
The objective of the invention is to realize by following structure.
Technical scheme 1: the incorporate water processing reactor of a kind of photochemical catalysis and biological degradation, it is characterized in that: as at the photocatalytic region 2 on described reactor top and the division plate between the biological degradation district 10 in the bottom, and the photochemical catalysis plate is offered water hole 1 and drainage hole 5 by photochemical catalysis plate 3;
At the lower rim wall of described photocatalytic region 2, the top of photochemical catalysis plate 3 sets out the mouth of a river 6 and valve, offers water-in 7 and valve at the lower rim wall in described biological degradation district 10;
On described reactor 9 water pump 11 is set, the pump mouth of water pump 11 connects biological degradation district 10, and the water port of water pump 11 connects photocatalytic region 2.
Technical scheme 2: the incorporate water processing reactor of a kind of photochemical catalysis and biological degradation, it is characterized in that: as at the photocatalytic region 2 on described reactor top and the division plate between the biological degradation district 10 in the bottom, and the photochemical catalysis plate is offered water hole 1 and drainage hole 5 by photochemical catalysis plate 3;
At the lower rim wall of described photocatalytic region 2, the top of photochemical catalysis plate 3 sets out the mouth of a river 6 and valve, offers water-in 7 and valve at the lower rim wall in described biological degradation district 10;
On described reactor 9 air pump 12 is set, the venting port of air pump 12 feeds 10 bottoms, biological degradation district.
Further, described photocatalytic region 2 is the top open type.
Further, described photocatalytic region 2 is covered by quartz glass plate for the top.
Further, last water hole 1 on the described photochemical catalysis plate and drainage hole 5 two ends that lay respectively at reactor 9 length directions.
Further, the biofilm carrier of configuration stupalith in the described biological degradation district 10, the biological degradation district adopts deflector type or the mobile form of flat flow water.
A kind of photochemical catalysis and biodegradable water treatment method is characterized in that:
1. at first under no uv irradiating, carry out biomembranous biofilm;
2. after the biofilm success, water is flowing as technical scheme 1 or 2 described reactor internal recycle, and alternately by photocatalytic degradation and biological degradation, wherein biodegradation process does not have UV-irradiation.
Further, described biomembranous colonization method is, when processing contains the waste water of Persistent organic pollutants, with active sludge or the peculiar microorganism bacterial classification solution submergence biofilm carrier cultivated at Persistent organic pollutants, flow 1-3 days biofilm time at the reactor internal recycle.
Further, described biomembranous colonization method is when handling micropollutant water, generates microbial film, 7～14 days biofilm time in the process of continuous treating water naturally.
Adopt the technical program, by water pump staying water is realized continuous treating water in the described reactor of input continuously, flow at the reactor internal recycle by water by water circulating pump or air pump in addition, when water flows through photochemical catalysis plate surface, under the radiation of UV-light, water body mainly carries out light-catalyzed reaction and obtains certain degraded, when water body flows through reactor lower part, water body contacts with biofilm surface, mainly carries out biological respinse.According to the transparency of pending water, by adjusting the height of the mouth of a river and valve controlling reactor water outlet, reach control photochemical catalysis plate surface water layer thickness, increase the transmissivity of UV-light, thereby can improve the purpose of light-catalysed efficient.
Described biological degradation district is a deflector type, also can adopt flat flow or form various liquid forms according to the shape of other biological membrane carrier.
The photochemical catalysis plate has blocked the irradiation of UV-light to the biological degradation district as tinted shade, has avoided the lethal effect of UV-light to microorganism cells.
The top of photocatalytic region is open type or is covered by quartz glass plate that so structure can guarantee the directly fully irradiation of UV-light to the photochemical catalysis plate, carries out photocatalytic degradation and handles.
Stupalith is a kind of more satisfactory biofilm carrier, and the biofilm effect is better, and adopting deflector type or flat flow in the biological degradation district also is the mobile form of a kind of water preferably.
Last water hole on the photochemical catalysis plate and drainage hole lay respectively at the two ends of photocatalytic region length direction, can be so that the water body in the reactor obtain circulating more fully, and treatment effect is better.
Reactor the unloading phase, carry out biomembranous biofilm earlier, at this moment, close the switch of ultraviolet source, according to different process object, adopt different colonization methods.For the trade effluent that contains Persistent organic pollutants, active sludge that can domestication is good or at hardly degraded organic substance pollutent cultured microorganism bacterium liquid, the submergence biofilm carrier, driving by recycle pump under no uv irradiating, be allowed to condition at the reactor internal recycle and flow 1-3 days biofilm time.Can adopt the method for natural membrane for micro-polluted source water, allow pending source water flow 7-14 days biofilm time at the reactor internal recycle.
Advantage of the present invention and beneficial effect: the invention provides the incorporate reactor of a kind of integrated photocatalysis and biological degradation.Adopt load to have the flat board of photocatalyst that reactor is divided into light-catalyzed reaction district and bio-reaction zone.On the top of photocatalytic region is ultraviolet source.Because the effect of photochemical catalysis plate can make the microorganism of bio-reaction zone avoid the lethal effect of UV-light to it.Hardly degraded organic substance by both synergies, can improve the speed of water treatment greatly under photocatalyst and biomembranous combined action like this, especially contains the processing efficiency of the water body of Persistent organic pollutants.This reactor has the compact and efficient characteristics for the treatment of water fast of apparatus structure, changed the structure of the split type reactor of domestic and international prior art fully, the reparation of surface water, the advanced treatment of drinking water resource and the processing of difficult degradation industrial organic waste water have all been had crucial meaning.
The processing, effluent of municipal sewage plant that the inventive method can be used for reparation, the drinking water resource of polluted surface water as in pre-treatment etc. before the water reuse, described reactor also can be extended to fields such as relevant refractory organic industrial sewage processing with treatment process.
(4) description of drawings
Fig. 1 is with photochemical catalysis and the biological degradation integrated reactor synoptic diagram of water pump as the water body circulation device
Fig. 2 is with photochemical catalysis and the biological degradation integrated reactor synoptic diagram of air pump as the water body circulation device
Among the figure, the 1st, last water hole, the 2nd, photocatalytic region, the 3rd, photochemical catalysis plate, the 4th, ultraviolet source, the 5th, drainage hole, the 6th, water outlet, the 7th, water-in, the 8th, biofilm carrier, the 9th, reactor, the 10th, biological degradation district, the 11st, water pump, the 12nd, air pump.
(5) embodiment
Below in conjunction with drawings and Examples, the present invention is elaborated.
For an integrated photocatalysis and the incorporate reactor of biological degradation, processing contain Persistent organic pollutants trade effluent, carry out the surface water reparation and when drinking water resource handled its operating procedure be respectively:
The processing of embodiment one organic wastewater with difficult degradation thereby
Surface-coated TiO at stupalith
2, photochemical catalysis plate 3 levels of making place reactor 9, and reactor 9 is divided into the photocatalytic region 2 on top and the biological degradation district 10 of bottom.
To tame good activated sludge solutions or add in the reactor 9 and submergence biofilm carrier 8 at the peculiar microorganism bacterium liquid that organic wastewater with difficult degradation thereby is cultivated, and at reactor 9 internal recycle, close ultraviolet source 4, after the absorption inoculation, after 2-3 days, form sophisticated microbial film, discharge unnecessary active sludge or bacterium liquid.
After treating that microbial film forms, handle continuously, adopt another water pump, control flow velocity well, pending water is pumped into realization processing continuously in the reactor, meanwhile, extract water by water circulating pump 11 out from the bottom of reactor 9, be pressed into reactor 9 tops, and the water pipe that top is pressed into extends the position that arrives photochemical catalysis plate 3 tops in the reactor, make pending water horizontal flow cross the photochemical catalysis plate after, enter into bio-reaction zone again by drainage hole 5, at reactor 9 internal recycle, open UV-light 4 simultaneously and so forth.
The surface water reparation of embodiment two combined pollutions
Surface-coated TiO at pottery or glass material
2, the photochemical catalysis plate of making 3 places the top of reactor 9, and reactor 9 is divided into photocatalytic region 2 and biological degradation district 10.Advance biofilm and operation by embodiment one described method, after treating the biofilm success, the surface water that is continuously pumped into combined pollution is handled continuously, pending water is under the effect of water circulating pump 11 or air pump 12, constantly cycle through photocatalytic region and bio-reaction zone, when by photocatalytic region 2, water body is in light-catalysed effect, Persistent organic pollutants partly are degraded into can be by the effective organic carbon source that utilizes of microorganism, promote carrying out smoothly of combined pollution water body denitrification dephosphorization, thereby realize the synchronous removal of element such as nitrogen, phosphorus and Persistent organic pollutants.
The processing of embodiment three source waters
Surface-coated TiO at pottery or glass material
2, the photochemical catalysis plate of making 3 places the top of reactor 9, and reactor 9 is divided into photocatalytic region 2 and biological degradation district 10.Pending source water is continuously pumped in the reactor 9, closes ultraviolet source 4, under no uv irradiating condition, water is flowed at reactor 9 internal recycle by water circulating pump 11 or air pump 12.Through after 7-14 days, allow its nature on biofilm carrier 8, form microbial film, treat the biofilm success after, open ultraviolet source 4, source water is carried out advanced treatment continuously, remove the organic micro-pollutant in the water body.
Claims (9)
1. photochemical catalysis and the incorporate water processing reactor of biological degradation, it is characterized in that: as being positioned at the photocatalytic region (2) on described reactor top and being positioned at division plate between the biological degradation district (10) of bottom, and the photochemical catalysis plate is offered water hole (1) and drainage hole (5) by photochemical catalysis plate (3);
Ultraviolet source (4) is positioned at the top of described photochemical catalysis plate (3) by on-off control;
Biofilm carrier (8) is positioned at described biological degradation district (10);
At the lower rim wall of described photocatalytic region (2), the top of photochemical catalysis plate (3) sets out the mouth of a river (6) and valve, offers water-in (7) and valve at the lower rim wall in described biological degradation district (10);
Water pump (11) is set on described reactor (9), and the pump mouth of water pump (11) connects biological degradation district (10), and the water port of water pump (11) connects photocatalytic region (2).
2. photochemical catalysis and the incorporate water processing reactor of biological degradation, it is characterized in that: as being positioned at the photocatalytic region (2) on described reactor top and being positioned at division plate between the biological degradation district (10) of bottom, and the photochemical catalysis plate is offered water hole (1) and drainage hole (5) by photochemical catalysis plate (3);
Ultraviolet source (4) is positioned at the top of described photochemical catalysis plate (3) by on-off control;
Biofilm carrier (8) is positioned at described biological degradation district (10);
At the lower rim wall of described photocatalytic region (2), the top of photochemical catalysis plate (3) sets out the mouth of a river (6) and valve, offers water-in (7) and valve at the lower rim wall in described biological degradation district (10);
Air pump (12) is set on described reactor (9), and the venting port of air pump (12) feeds bottom, biological degradation district (10).
3. water processing reactor according to claim 1 and 2 is characterized in that described photocatalytic region (2) is the top open type.
4. water processing reactor according to claim 1 and 2 is characterized in that described photocatalytic region (2) is covered by quartz glass plate for the top.
5. water processing reactor according to claim 1 and 2 is characterized in that the two ends that last water hole (1) on the described photochemical catalysis plate and drainage hole (5) lay respectively at reactor (9) length direction.
6. water processing reactor according to claim 1 and 2 is characterized in that the interior biofilm carrier that disposes stupalith in described biological degradation district (10), and the biological degradation district adopts deflector type or the mobile form of flat flow water.
7. a photochemical catalysis and biodegradable water treatment method is characterized in that:
1. at first under no uv irradiating, carry out biomembranous biofilm;
2. after the biofilm success, water flows at reactor internal recycle as claimed in claim 1 or 2, and alternately by photocatalytic degradation and biological degradation, wherein biodegradation process does not have UV-irradiation.
8. water treatment method according to claim 7, it is characterized in that described biomembranous colonization method is, when processing contains the waste water of Persistent organic pollutants, with active sludge or the peculiar microorganism bacterial classification solution submergence biofilm carrier cultivated at Persistent organic pollutants, flow 1-3 days biofilm time at the reactor internal recycle.
9. water treatment method according to claim 7 when it is characterized in that described biomembranous colonization method for processing micropollutant water water, generates microbial film, 7～14 days biofilm time naturally in the process of continuous treating water.
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| CN2008100357121A CN101284689B (en) | 2008-04-08 | 2008-04-08 | Water processing reactor integrating photocatalysis and biological degradation and method thereof |
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| CN2008100357121A CN101284689B (en) | 2008-04-08 | 2008-04-08 | Water processing reactor integrating photocatalysis and biological degradation and method thereof |
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| CN101284689B true CN101284689B (en) | 2011-01-05 |
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