The dual internal recycle water treating device that a kind of photochemical catalysis is combined with aerobe
The utility model relates to the dual internal recycle water treating device that a kind of photochemical catalysis is combined with aerobe, belongs to the technical field of dirty sewage treatment equipment.
In dirty wastewater treatment, treatment facility and technology are most important, the quality for the treatment of facility and the quality for the treatment of technology have directly affected the effect of dirty wastewater treatment, various water treating equipment and the technology used at present, all for specific dirty waste water, its treatment effect can reach emission request basically, but these water treating equipment in use have certain limitation, promotes the use of then such as need and must carry out larger improvement.And use existing water treating device to process also and need to allocate various chemical reagent for impurities for dirty waste water that is comparatively complicated, difficult for biological degradation, high expensive, and when adding, slightly have and improperly also can cause secondary pollution to water resources.Therefore adopt a kind of water treatment mode of non-additive to process the main research that difficult for biological degradation sewage becomes dirty wastewater treatment circle.
The organic waste water that utilizes photocatalysis technology to process difficult degradation is the novel process of seeking in the prior art: disclose a kind of suspension activated carbon photocatalysed ozone water processing unit such as Chinese patent CN201762164U, be comprised of light-catalyzed reaction cylinder, ultraviolet source and separator.Light-catalyzed reaction cylinder lower end cover is provided with water-in and inlet mouth, is provided with the gas nose cone in the inboard of lower capping, establishes sparger on its mouth of pipe, and guide shell is installed on gas nose cone top with one heart, and guide shell is outside for the light-catalyzed reaction cylinder, links with separator.Silica tube passes from the separator top, directly gos deep in the guide shell, and fixes by the ultraviolet tube retaining plate.Ultraviolet tube is installed in the silica tube, and wire stretches out the outside.The utility model suspension activated carbon photocatalysed ozone water processing unit, make granulated active carbon be in the suspended motion state by gas stripping, realize that in a device solid catalyst and ultraviolet cooperating catalysis ozone generate hydroxyl radical free radical (OH), reactor efficiency is high; The liquid circulation that upwelling and down-welling district density difference forms, strengthened the effect of mass transmitting between ozonize gas and liquid, the liquid that falls simultaneously the stream district becomes the effect of carrying secretly of ozonize gas to dirty sports, increased ozonize gas residence time in reactor, has greatly improved the utilization ratio of ozone.Although this patent is the organic waste water of combined with ozone and photocatalysis treatment difficult degradation, aeration process needs ozone, has increased production cost; Catalytic process also can output ozone, the collection of ozone and store the safety coefficient that also can increase processing.And in this patent only the waste water for difficult degradation process, and not mentioned and relate to and process organic technical scheme in the waste water.
The utility model content
For the deficiencies in the prior art, the dual internal recycle water treating device that the utility model provides a kind of photochemical catalysis to be combined with aerobe.
The technical solution of the utility model is as follows:
The dual internal recycle water treating device that a kind of photochemical catalysis is combined with aerobe, comprise reaction tube, be provided with triphase separator and air lift cylinder from top to bottom at the axial location of reaction tube, be provided with escape pipe links to each other with described triphase separator at the top of reaction tube, barrel on reaction tube top is provided with water outlet, be provided with water inlet pipe in the bottom of reaction tube relative with the bottom of air lift cylinder, be surrounded with aeration plate in air lift cylinder bottom, have on the aeration plate for the dirty micropore of sewage, described aeration plate is divided into two parts in negative area and recirculating zone with reaction tube; In the air lift cylinder, be provided with the light granules of ultraviolet source and titanium dioxide; Negative area at reaction tube is filled with aerobic activated sludge.
Preferred according to the utility model, the position internal diameter that described air lift cylinder links to each other with aeration plate is 1/2 of air lift cylinder top internal diameter.The advantage of this design is, the internal diameter by the air lift cylinder bottom that reduces increases the hydraulic pressure that wastewater streams injects, and sewage is fully mixed with the light granules of titanium dioxide.
Preferred according to the utility model, the recirculating zone of described reaction tube is doline, is provided with support in the bottom of reaction tube.
Preferred according to the utility model, described triphase separator comprises guide shell and the umbrella pod that arranges from top to bottom, is provided with the water conservancy diversion edge of inside turnover at the outward flange of umbrella pod, and the internal diameter on the internal diameter on water conservancy diversion edge and air lift cylinder top adapts.The purpose of design is herein, when sewage rose to the umbrella pod along the air lift cylinder, sewage was kept off, and was back to the recirculating zone of reaction tube along the slit between air lift cylinder and the water conservancy diversion edge, the light granules of titanium dioxide then is back in the described air lift cylinder by gear, continues to carry out light-catalyzed reaction with sewage.
Preferred according to the utility model, the light granules cumulative volume of the titanium dioxide of placing in the described reaction tube is the long-pending 1/15-1/8 of air lift cylindrical shell.
Preferred according to the utility model, the aerobic activated sludge cumulative volume that place the negative area of described reaction tube is the 1/15-1/8 of reaction tube volume.
Preferred according to the utility model, described reaction tube also comprises the tubular disengaging zone, and the internal diameter of described tubular disengaging zone is provided with inclination sedimentation edge greater than the internal diameter of described negative area between described tubular disengaging zone and the negative area.The design's advantage is, described current rise to the tubular disengaging zone along the air lift cylinder of less internal diameter, throw out in the described sewage is back to the reaction tube bottom by umbrella pod gear, the progressively increase of its reaction tube internal diameter, reduce the flow-disturbing effect of sewage in the cylinder, prevent that throw out from scattering, accelerate sedimentation effect, help reaction tube top to present clear liquid.
Preferred according to the utility model, the level attitude on described inclination sedimentation edge is lower than the level attitude on described water conservancy diversion edge.
Advantage of the present utility model is:
The utility model combines photochemical catalysis with biological process, both can realize effective processing of readily biodegradable sewage, can realize again effective processing of waste water difficult for biological degradation.The utility model has adopted photocatalysis technology to the good degradation rate of recalcitrant substance and the biologic treating technique degraded thoroughness to the small molecules biodegradable material, not only can realize the more efficient processing of sanitary sewage, and can realize effective removal of various recalcitrant substances (such as waste water from dyestuff).Have wider process range, reach the coupling of multiple water treatment technology, adopt the structure of dual internal recycle, sewage is fully degraded, the water treatment effect that not only improves has reached again and has economized on resources, and reduces the purpose of care and maintenance cost.While the utility model also has simple in structure, easy to operate, is easy to loading and unloading, widely used characteristics.
Description of drawings
Fig. 1 is the structural representation of water treating device described in the utility model;
In Fig. 1,1, reaction tube; 1-1, negative area; 1-2, recirculating zone; 1-3, tubular disengaging zone; 1-4, inclination sedimentation edge;
2, triphase separator; 2-1, guide shell; 2-2, umbrella pod; 2-3, water conservancy diversion edge;
3, air lift cylinder; The position that 3-1, air lift cylinder link to each other with aeration plate;
4, escape pipe; 5, water outlet; 6, water inlet pipe; 7, aeration plate; 8, ultraviolet source; 9, titanium dioxide light granules; 10, aerobic activated sludge; 11, support.
Below in conjunction with Figure of description 1 and embodiment the utility model is described in detail, but is not limited to this.
Used titanium dioxide light granules is the activated carbon granule that load has titanium dioxide in following examples, and the tap density of described titanium dioxide light granules is that 0.3-0.5kg/L, specific surface are 1500-2000m
2/ g, particle size range 2-4mm, water-intake rate are 300-450%; The light granules of described titanium dioxide comprises following raw material by weight percentage:
Activated carbon granule: 90 parts;
Titanium dioxide: 6 parts.
The preparation method of described titanium dioxide light granules comprises that step is as follows:
(1) uses the magnetic force thermostatic mixer under 25 ℃, analytically pure butyl (tetra) titanate, analytically pure glacial acetic acid to be added in the dehydrated alcohol successively, stir 15 ~ 20min, obtain the yellow solution of homogeneous transparent; The volume parts of described butyl (tetra) titanate, glacial acetic acid and dehydrated alcohol is respectively:
Butyl (tetra) titanate: 5 parts;
Glacial acetic acid: 1 part;
Dehydrated alcohol: 15 parts;
(2) continue to stir, add the HNO that accounts for the yellow solution volume percent 27-28% that obtains in the step (1)
3-ethanolic soln; Described HNO
3-ethanolic soln comprises the raw material of following volume parts ratio:
Concentration is the HNO of 65-68wt%
3Solution: 1 part;
Dehydrated alcohol: 20 parts;
Deionized water: 2 parts;
3The compound method of-ethanolic soln is: add successively deionized water and the concentrated nitric acid of above-mentioned volume parts in dehydrated alcohol, and continue stirring until abundant dissolving.
(3) drip this HNO
3Behind-the ethanolic soln, continue to stir 1-1.5h and obtain TiO 2 sol;
(4) activated carbon granule is immersed in the TiO 2 sol of step (3) preparation, abundant dipping, after then lifting out in baking oven in 105 ℃ of lower oven dry 2-3h, be plated film once; Repeating step is (3) 2 times again, is plated film three times;
(5) activated carbon granule with plated film three times places quartz tube furnace, passes into nitrogen as protection gas, and calcining at constant temperature 4-5h under 500-600 ℃ of condition makes the titanium dioxide firm attachment on activated carbon granule, namely gets the titanium dioxide light granules.
Before waste water is processed, described titanium dioxide light granules is carried out microbial film cultivate, comprise that step is as follows:
(1) light granules of the titanium dioxide of above-mentioned preparation is mixed with volume ratio 1:4 with aerobic sludge adds reaction tube, close ultraviolet source, take pending waste water as culture medium;
(2) the lower domestication 1 month in pending waste water realized titanium dioxide light granules surface and internal voids biofilm.Then ultraviolet source is opened, other conditions are constant, continue the operation water treating device, under the effect of ultraviolet source, the organism of difficult degradation is degraded in the waste water, and the microorganism of while particle surface is inactivation gradually, only realizes the organic degraded of bio-degradable by inner aerobic microbiological film.After the biofilm, microorganism in the titanium dioxide light granules (dry weight) accounts for 2%-10%.
The dual internal recycle water treating device that a kind of photochemical catalysis is combined with aerobe, comprise reaction tube 1, axial location at reaction tube is provided with triphase separator 2 and air lift cylinder 3 from top to bottom, be provided with escape pipe 4 links to each other with described triphase separator 2 at the top of reaction tube 1, barrel on reaction tube 1 top is provided with water outlet 5, be provided with water inlet pipe 6 in the bottom of reaction tube 1 relative with the bottom of air lift cylinder 3, be surrounded with aeration plate 7 in air lift cylinder 3 bottoms, have on the aeration plate 7 for the dirty micropore of sewage, described aeration plate 7 is divided into negative area 1-1 and two parts of recirculating zone 1-2 with reaction tube 1; In air lift cylinder 3, be provided with the light granules 9 of ultraviolet source 8 and titanium dioxide; 1-1 is filled with aerobic activated sludge 10 in the negative area of reaction tube 1.The position internal diameter that described air lift cylinder 1 links to each other with aeration plate 7 is 1/2 of air lift cylinder 3 top internal diameters.
The recirculating zone of described reaction tube is doline, is provided with support 11 in the bottom of reaction tube.Described triphase separator comprises from top to bottom guide shell 2-1 and the umbrella pod 2-2 that arranges, and the water conservancy diversion that is provided with inside turnover at the outward flange of umbrella pod 2-2 is along 2-3, and water conservancy diversion adapts along the internal diameter of 2-3 and the internal diameter on air lift cylinder 3 tops.Light granules 9 cumulative volumes of the titanium dioxide of described reaction tube 1 interior placement are 1/10 of air lift cylinder 3 volumes.Aerobic activated sludge 10 cumulative volumes that the negative area 1-1 of described reaction tube 1 places are 1/8 of reaction tube 1 volume.
Described reaction tube 1 also comprises tubular disengaging zone 1-3, and the internal diameter of described tubular disengaging zone 1-3 is provided with the inclination sedimentation along 1-4 greater than the internal diameter of described negative area 1-1 between described tubular disengaging zone 1-3 and the negative area 1-1.Described inclination sedimentation is lower than described water conservancy diversion along the level attitude of 2-3 along the level attitude of 1-4.
Utilize the as described in Example 1 method for waste water of water treating device processing Shandong District textile mills, comprise that step is as follows:
(1) open ultraviolet source 8, sewage is pumped into described air lift cylinder 3 along water inlet pipe;
(2) described sewage mixes with the light granules 9 of titanium dioxide in air lift cylinder 3, and under the ultraviolet source irradiation, under the Titanium Dioxide effect, the refractory organic in the sewage is degraded to the bio-degradable compound; Sewage rises to triphase separator: described gas is discharged along escape pipe; The light granules of described titanium dioxide is carried in the cylinder 3 by triphase separator gear return-air; Described sewage backflow is to the negative area 1-1 of reaction tube;
(3) sewage, fully mixes with aerobic activated sludge 10 through Air Exposure at negative area 1-1, and the bio-degradable compound in the sewage is degraded;
(4) sewage flows into the recirculating zone 1-2 of reaction tube along the micropore on the aeration plate, and repeating step (2)-(3) are until sewage reaches discharge index;
(5) sewage that is disposed is discharged reaction tube along rising pipe.
Utilize the waste water of the textile mills after embodiment 1 described water treating device is processed, the material of difficult degradation in the waste water: the clearance of azo group reaches more than 80%.