CN104370342A - Photocatalyst recovery device, organic waste water treatment method and organic waste water treatment device - Google Patents
Photocatalyst recovery device, organic waste water treatment method and organic waste water treatment device Download PDFInfo
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- CN104370342A CN104370342A CN201410660856.1A CN201410660856A CN104370342A CN 104370342 A CN104370342 A CN 104370342A CN 201410660856 A CN201410660856 A CN 201410660856A CN 104370342 A CN104370342 A CN 104370342A
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- 239000011941 photocatalyst Substances 0.000 title claims abstract description 100
- 239000010815 organic waste Substances 0.000 title claims abstract description 73
- 238000011084 recovery Methods 0.000 title claims abstract description 58
- 238000004065 wastewater treatment Methods 0.000 title abstract 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 220
- 238000001914 filtration Methods 0.000 claims abstract description 104
- 239000002351 wastewater Substances 0.000 claims abstract description 65
- 239000012528 membrane Substances 0.000 claims abstract description 51
- 238000000034 method Methods 0.000 claims description 87
- 239000003054 catalyst Substances 0.000 claims description 49
- 230000001699 photocatalysis Effects 0.000 claims description 32
- 238000007146 photocatalysis Methods 0.000 claims description 32
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 30
- 238000012545 processing Methods 0.000 claims description 19
- 239000000919 ceramic Substances 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 14
- 230000004907 flux Effects 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 8
- 238000005374 membrane filtration Methods 0.000 claims description 5
- 239000000523 sample Substances 0.000 claims description 5
- 230000003647 oxidation Effects 0.000 description 11
- 238000007254 oxidation reaction Methods 0.000 description 11
- 239000000203 mixture Substances 0.000 description 7
- 238000011010 flushing procedure Methods 0.000 description 6
- -1 hydroxyl radical free radical Chemical class 0.000 description 5
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 4
- 239000011943 nanocatalyst Substances 0.000 description 4
- 150000002894 organic compounds Chemical class 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 235000011089 carbon dioxide Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000004148 unit process Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/08—Flat membrane modules
- B01D63/087—Single membrane modules
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
- C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Water Treatments (AREA)
Abstract
The embodiment of the invention discloses a photocatalyst recovery device, an organic waste water treatment method and an organic waste water treatment device. The photocatalyst recovery device comprises a first end, a second end, a third outlet and a filtering passage, wherein the filtering passage comprises a water inlet end and a water outlet end; the water inlet end is communicated with the first end, and is used for flowing water in which the photocatalyst is not separated; a filtering membrane crossing the filtering passage is arranged between the water inlet end and the water outlet end and is used for intercepting the photocatalyst contained in treated waste water; a filtering opening is formed on the water inlet end side, adjacent to the filtering membrane, of the filtering passage and is communicated with the third outlet; and the water outlet end of the filtering passage is communicated with the second end, and the second end is communicated with a water outlet tank which is used for storing treated water after filtration. The photocatalyst recovery device, the organic waste water treatment method and the organic waste water treatment device, provided by the invention, can reduce the cost of treating the organic waste water.
Description
Technical field
The application relates to technical field of waste water processing, particularly a kind of photocatalyst retrieving arrangement, method for processing organic wastewater and device.
Background technology
Along with the development of chemical industry, the organic waste water of various difficult degradation is increasing.These organic waste water toxicity are large, higher containing Pollutant levels, severe contamination water body environment.
Existing method for processing organic wastewater comprises: photocatalytic oxidation.Can comprise particularly:
In organic waste water, add enough photocatalysts, adopt UV-irradiation to add the organic waste water of photocatalyst, the water being mixed with photocatalyst can produce hydroxyl radical free radical under the irradiation of UV-light.Described hydroxyl radical free radical has stronger oxidation capacity, can pollutent in oxidized organic wastewater.Carbonic acid gas and other mineral ions can be generated after pollutent in organic waste water is oxidized, thus realize the process of organic waste water.After processing is completed, by the method for precipitation, can recycle by recovery part photocatalyst.
Realizing in the application's process, contriver finds that in prior art, at least there are the following problems: adopt in existing method for processing organic wastewater treating processes, a large amount of photocatalysts remains in waste water after treatment, causes the waste of photocatalyst, makes the cost processing organic waste water higher.
Summary of the invention
The object of the embodiment of the present application is to provide a kind of photocatalyst retrieving arrangement, method for processing organic wastewater and device, to reduce the cost of process organic waste water.
For solving the problems of the technologies described above, the embodiment of the present application provides a kind of photocatalyst retrieving arrangement, method for processing organic wastewater and device to be achieved in that
A kind of photocatalyst retrieving arrangement, for reclaiming the photocatalyst comprised in the water after treatment of Organic Wastewater; Comprise: for intake first end, for discharge filter after the second end of water and the 3rd outlet for discharging the water containing photocatalyst; Comprise filtration channel in described device, described filtration channel comprises feed-water end and water side; The feed-water end of described filtration channel is connected with described first end, and described first end is connected with the outlet of photocatalysis apparatus, and the feed-water end of described filtration channel is for flowing into the water not isolating photocatalyst; The filtering membrane being transverse to described filtration channel is provided with, the photocatalyst comprised in the waste water after described filtering membrane is used for intercept process between the feed-water end of described filtration channel and water side; The feed-water end side of described filtration channel and described filtering membrane adjacent are provided with filtration openings, and described filtration openings is for discharging the water containing photocatalyst; Described filtration openings and the described 3rd exports and is connected; Described 3rd outlet is connected with the backflow tank that untreated organic waste water is housed; The water side of described filtration channel is for discharging the process water after described membrane filtration; The water side of described filtration channel is connected with described second end, and described second end is connected with the effluent trough for the process water after stored filter.
In preferred version, described filtration channel has one at least; Described filtering membrane adopts ceramic membrane; The membrane flux of described ceramic membrane is: be more than or equal to 100 liters/(square meter hour).
In preferred version, described photocatalyst retrieving arrangement also comprises: air compressor machine and recoil tank, described recoil tank is connected between described air compressor machine with described second end, and described air compressor machine recoils to the filtering membrane in described filtration channel through surge tank for generation of gas.
A kind of organic waste-water treating apparatus, comprising: inlet flume, ultrasonic unit, photocatalysis apparatus, ultraviolet light source, catalyst recovery devices and effluent trough; Wherein, described inlet flume be one formed by sidewall and bottom there is upper uncovered container, the side wall lower ends of described inlet flume or bottom are provided with a lower ending opening; Described backflow tank is the unopened container having top, sidewall and bottom to be formed, the top of described backflow tank is provided with catalyzer and adds mouth, the top of described backflow tank is provided with top end opening, and the top end opening of described backflow tank is connected by the first pipeline with the lower ending opening of described inlet flume; Side wall lower ends or the bottom of described backflow tank are provided with a lower ending opening; Described ultrasonic unit comprises ultrasonic wave duct and is built in the ultrasonic probe in described ultrasonic wave duct; The entrance end of described ultrasonic wave duct is connected by the lower ending opening of second pipe with described backflow tank, and the exit end of described ultrasonic wave duct is connected with the first end of described photocatalysis apparatus; Described photocatalysis apparatus is comprise the through tubing string in the two ends of first end and the second end; Described tubing string horizontal positioned, is provided with ultraviolet lamp tube in described tubing string, and described ultraviolet lamp tube runs through in described tubing string; Described ultraviolet light source is connected by electric wire with described ultraviolet lamp tube; Described catalyst recovery devices comprise first end for intaking, for discharge filter after the second end of water and the 3rd outlet for discharging the water containing photocatalyst; The first end of described catalyst recovery devices is connected by the 3rd pipeline with the second end of described photocatalysis apparatus; Comprise filtration channel in described catalyst recovery devices, described filtration channel comprises feed-water end and water side; The feed-water end of described filtration channel is connected with described first end, and described first end is connected with the outlet of photocatalysis apparatus, and the feed-water end of described filtration channel is for flowing into the water not isolating photocatalyst; The filtering membrane being transverse to described filtration channel is provided with, the photocatalyst comprised in the waste water after described filtering membrane is used for intercept process between the feed-water end of described filtration channel and water side; The feed-water end side of described filtration channel and described filtering membrane adjacent are provided with filtration openings, and described filtration openings is for discharging the water containing photocatalyst; Described filtration openings exports with the 3rd of described catalyst recovery devices and is connected; 3rd outlet of described catalyst recovery devices is connected with backflow tank; The water side of described filtration channel is for discharging the process water after described membrane filtration; The water side of described filtration channel is connected with described second end, and described second end is connected with the effluent trough for the process water after stored filter.
In preferred version, described organic waste-water treating apparatus also comprises: the bottom of described backflow tank is also provided with aerating apparatus.
In preferred version, described organic waste-water treating apparatus also comprises: described first pipeline is provided with inlet valve and feed water flow gauge; Described second pipe is provided with the first backflow water valve and back-water gauge; Described 4th pipeline is provided with the second backflow water valve; Described 5th pipeline is provided with the first valve and water flow meter.
In preferred version, described organic waste-water treating apparatus also comprises: air compressor machine, the 6th pipeline, surge tank and the second valve; Described surge tank is the through tubing string containers in two ends, and described tubing string container upright is placed; Described air compressor machine is connected with the 5th pipeline by the 6th pipeline; Described 6th pipeline is being separated between the second outlet and the first valve with the junction of described 5th pipeline; Described 6th pipeline is provided with surge tank, and described surge tank is connected with described 6th pipeline; Described second valve is arranged on the 6th pipeline, and described second valve is arranged between described air compressor machine and described surge tank.
In preferred version, described organic waste-water treating apparatus also comprises: automatic control device; Described automatic control device is connected with described second valve with described first valve respectively; Described automatic control device controls the folding of described first valve and described second valve.
In preferred version, in described catalyst recovery devices, adopt ceramic membrane; The membrane flux of described ceramic membrane is: be more than or equal to 100 liters/(square meter hour).
A kind of method for processing organic wastewater, comprising: input organic waste water is in backflow tank, and the flow of the organic waste water of record input backflow tank; Add photocatalyst and the hydrogen peroxide of predetermined amount in backflow tank, and described photocatalyst, hydrogen peroxide are mixed with the organic waste water in backflow tank; Described Catalyzed by Ultrasonic Wave device launches ultrasonic wave, processes the organic waste water flowing through ultrasonic unit; Ultra violet lamp in photocatalysis apparatus is mixed with the organic waste water of photocatalyst, carries out oxide treatment to described organic waste water; Waste water after utilizing catalyst recovery devices to be separated described process obtains photocatalyst and process water; Export described photocatalyst in backflow tank, export described process water in effluent trough, and record flows out to the process discharge of effluent trough.
The technical scheme provided from above the embodiment of the present application, the catalyst recovery devices that the embodiment of the present application provides, method for processing organic wastewater and device, to the organic waste water of photocatalyst be mixed with after UV-irradiation process, adopt the waste water after catalyst recovery devices separating treatment, the higher photocatalyst of rate and process water can be recycled, realize recycling of photocatalyst, reduce the cost of process organic waste water.Meanwhile, adopt ultrasonic unit to process the organic waste water flowing through ultrasonic wave pipe, hydrogen peroxide can be made under ul-trasonic irradiation to produce hydroxy radical qiao oxidation of organic compounds, improve the oxidation effectiveness of objectionable impurities in light organic waste water.In addition, nanocatalyst suspension can be produced by ultrasonic wave dissemination, can photocatalysis efficiency be improved.Further, back flushing is carried out to the filtering membrane in catalyst recovery devices, can successfully reclaim the photocatalyst sticked in described filtering membrane, further increase the rate of recovery of catalyzer, reduce the cost of process organic waste water.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the composition structural representation of the application's photocatalyst retrieving arrangement embodiment;
Fig. 2 A is the composition structural representation of the application's organic waste-water treating apparatus first embodiment;
Fig. 2 B is the composition structural representation of the application's organic waste-water treating apparatus second embodiment;
Fig. 3 is the schema of the application's method for processing organic wastewater embodiment.
The component names of main parts size label and correspondence in figure: 1-inlet flume; 2-refluxes tank; 3-ultrasonic unit; 4-photocatalysis apparatus; 5-catalyst recovery devices; 6-effluent trough; 7-first pipeline; 8-inlet valve; 9-feed water flow gauge; 10-catalyzer adds mouth; 11-aerating apparatus; 12-second pipe; 13-first refluxes water valve; 14-back-water gauge; 15-the 3rd pipeline; 16-the 4th pipeline; 17-second refluxes water valve; 18-the 3rd exports; 19-the 5th pipeline; 20-first valve; 21-water flow meter; 22-intake pump; 23-refluxes water pump; 24-air compressor machine; 25-the 6th pipeline; 26-surge tank; 27-second valve; 28-automatic control device; The ultrasonic wave duct of 31-; 32-ultrasonic probe; 41-ultraviolet tube; 42-ultraviolet light source; 51-first end; 52-second end; 53-filtration channel; 531-feed-water end; 532-water side; 533-filtering membrane; 534-filtration openings.
Embodiment
The embodiment of the present application provides a kind of photocatalyst retrieving arrangement, method for processing organic wastewater and device.
Technical scheme in the application is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the application's protection.
Fig. 1 is the composition structural representation of the application's photocatalyst retrieving arrangement embodiment, and as shown in Figure 1, described device can comprise:
For intake first end 51, for discharge filter after water the second end 52 and for discharge containing photocatalyst water the 3rd outlet 18;
Comprise filtration channel 53 in described device, described filtration channel comprises feed-water end 531 and water side 532;
The feed-water end 531 of described filtration channel is connected with described first end 51, and described first end 51 is connected with the outlet of photocatalysis apparatus, and the feed-water end 531 of described filtration channel is for flowing into the water not isolating photocatalyst;
The filtering membrane 533 being transverse to described filtration channel is provided with, the photocatalyst of described filtering membrane 533 for comprising in the waste water after intercept process between the feed-water end 531 of described filtration channel and water side 532;
Feed-water end 531 side of described filtration channel and described filtering membrane 533 adjacent are provided with filtration openings 534, and described filtration openings 534 is for discharging the water containing photocatalyst; Described filtration openings 534 and the described 3rd exports and is connected 18; Described 3rd outlet 18 is connected with the backflow tank that untreated organic waste water is housed;
The water side 532 of described filtration channel is for discharging the process water after described membrane filtration; The water side of described filtration channel is connected with described second end, and described second end is connected with the effluent trough for the process water after stored filter.
Described filtration channel 53 can have one at least.Described filtering membrane 533 can adopt ceramic membrane; The membrane flux of described ceramic membrane can be: be more than or equal to 100 liters/(square meter hour).
Described photocatalyst retrieving arrangement, can also comprise: air compressor machine and recoil tank, described recoil tank can be connected between described air compressor machine with described second end, and described air compressor machine may be used for producing gas and recoils to the filtering membrane in described filtration channel through surge tank.
Introduce the first embodiment of the application's organic waste-water treating apparatus below.
Fig. 2 A is the composition structural representation of the application's organic waste-water treating apparatus first embodiment.As shown in Figure 2 A, described organic waste-water treating apparatus can comprise:
Inlet flume 1, backflow tank 2, ultrasonic unit 3, photocatalysis apparatus 4, catalyst recovery devices 5 and effluent trough 6.
The lower end of described inlet flume 1 can be provided with opening.The upper end of described backflow tank 2 can be provided with opening.The lower ending opening place of described inlet flume 1 is connected by the upper end open of the first pipeline 7 with described backflow tank 2.Optional position on described first pipeline 7 can be provided with inlet valve 8 and feed water flow gauge 9.Open inlet valve 8, the waste water in inlet flume 1 can flow in backflow tank 2 through the first pipeline 7, and described feed water flow gauge 9 can record and flow into from inlet flume 1 wastewater flow refluxed tank 2.
The top of described backflow tank 2 can be provided with catalyzer and add mouth 10.Described catalyzer adds mouth 10 and may be used for adding photocatalyst and hydrogen peroxide.Described catalyzer adds mouth 10 can also as venting port.The bottom of described backflow tank 2 can also be provided with aerating apparatus 11.Described aerating apparatus 11 can discharge gas, and the photocatalyst refluxed in tank 2 can be mixed completely with organic waste water.
The lower end of described backflow tank 2 can also be provided with opening.The lower ending opening of described backflow tank 2 can be connected by second pipe 12 with the first end of described photocatalysis apparatus 3.Optional position on described second pipe 12 can be provided with the first backflow water valve 13 and back-water gauge 14.Open described first backflow water valve 13, the organic waste water being mixed with photocatalyst in backflow tank 2 can flow in photocatalysis apparatus 3 through second pipe 12.Described back-water gauge 14 can record the wastewater flow flowed out from backflow tank 2.
The ultrasonic probe 32 that described ultrasonic unit 3 comprises ultrasonic wave duct 31 and is built in described ultrasonic wave duct 31; The entrance end of described ultrasonic wave duct 31 is connected by the lower ending opening of second pipe 12 with described backflow tank 2, and the exit end of described ultrasonic wave duct 31 is connected with the first end of described photocatalysis apparatus 4.
Second end of described photocatalysis apparatus 4 can be connected by the 3rd pipeline 15 with the first end of described catalyst recovery devices 5.Described photocatalysis apparatus 4 inside can be provided with ultraviolet lamp tube 41.Described ultraviolet lamp tube can run through the inside of described photocatalysis apparatus.Described ultraviolet light source 42 can be connected by electric wire with described ultraviolet lamp tube 41, and described ultraviolet light source 42 can provide electric energy for ultraviolet lamp tube 41.Described ultraviolet lamp tube 41 emitting ultraviolet light irradiates the organic waste water flowing through described photocatalysis apparatus 4.The wavelength of described UV-light can be 254nm (nanometer).
Described catalyst recovery devices 5 may be used for the waste water after by process and is separated into photocatalyst and process water.Filtering membrane in described catalyst recovery devices 5 can adopt ceramic membrane.The membrane flux of described ceramic membrane can be more than or equal to 100L/m
2h (rising/(square meter hour)).3rd opening 18 of described catalyst recovery devices 5 can be connected by the 4th pipeline 16 with backflow tank 2.The isolated photocatalyst of described catalyst recovery devices 5 can be back in backflow tank 2 by the 4th pipeline 16.Optional position on described 4th pipeline 16 can be provided with the second backflow water valve 17.
Second end of described catalyst recovery devices 5 can be connected by the 5th pipeline 19 with described effluent trough 6.Optional position on described 5th pipeline 19 can be provided with the first valve 20 and water flow meter 21.When opening described first valve 20, being separated the process water obtained in described catalyst recovery devices 5 can be flowed in effluent trough 6 by described 5th pipeline 19.Described water flow meter 21 can record the process discharge flowing into effluent trough 6 from above-mentioned catalyst recovery devices 5.
The flooding velocity of described feed water flow gauge 9 can equal the process discharge of water flow meter 21 record
Further, described organic waste-water treating apparatus can also comprise: intake pump 22.Described intake pump 22 can be arranged on the optional position of described first pipeline 7.Described intake pump 22 can provide power for the organic waste water in described inlet flume 1 flows into backflow tank 2.
Further, described organic waste-water treating apparatus can also comprise: backflow water pump 23.Described backflow water pump 23 can be arranged on the optional position of described second pipe 12.Described backflow water pump 23 can flow into ultrasonic unit 3 and provide power for the organic waste water being mixed with photocatalyst in described backflow tank 2.
The organic waste-water treating apparatus that the present embodiment provides, to the organic waste water of photocatalyst be mixed with after UV-irradiation process, adopt the waste water after catalyst recovery devices separating treatment, the higher photocatalyst of rate and process water can be recycled, realize recycling of photocatalyst, reduce the cost of process organic waste water.Meanwhile, adopt ultrasonic unit to process the organic waste water flowing through ultrasonic wave pipe, hydrogen peroxide can be made under ul-trasonic irradiation to produce hydroxy radical qiao oxidation of organic compounds, improve the oxidation effectiveness of objectionable impurities in light organic waste water.In addition, nanocatalyst suspension can be produced by ultrasonic wave dissemination, can photocatalysis efficiency be improved.
Introduce the second embodiment of the application's organic waste-water treating apparatus below.
Fig. 2 B is the composition structural representation of the application's organic waste-water treating apparatus second embodiment.As shown in Figure 2 B, the difference of the present embodiment and organic waste-water treating apparatus first embodiment is, described organic waste-water treating apparatus can also comprise: air compressor machine 24, the 6th pipeline 25, surge tank 26 and the second valve 27.
Described air compressor machine 24 can be connected with the 5th pipeline 19 by the 6th pipeline 25.The junction of described 6th pipeline 25 and described 5th pipeline 19 can between catalyst recovery devices second end and the first valve 20.Described 6th pipeline 25 can be provided with surge tank 26, and described surge tank 26 is connected with described 6th pipeline 25.Described second valve 27 can be arranged on the 6th pipeline 25, and described second valve 27 can be arranged between described air compressor machine 24 and described surge tank 26.
Described air compressor machine can produce gas, when described second valve open, the first valve closes, the gas that described air compressor machine 24 produces enters in described catalyst recovery devices 5 by surge tank 26 and the 6th pipeline 25, back flushing is carried out to described catalyst recovery devices 5, flushes out the photocatalyst sticked in described catalyst recovery devices.
Further, described organic waste-water treating apparatus can also comprise: automatic control device 28.Described automatic control device 28 can be connected with described second valve 27 with described first valve 20 respectively by electric wire.Described automatic control device 28 can control the folding of described first valve 20 and described second valve 27.
The organic waste-water treating apparatus that the present embodiment provides, back flushing can be carried out further to catalyst recovery devices, can successfully reclaim the photocatalyst sticked in described catalyst recovery devices on filtering membrane, compared with device first embodiment, further increase the rate of recovery of catalyzer, reduce the cost of process organic waste water.
Introduce the embodiment of the application's method for processing organic wastewater below.
Fig. 3 is the schema of the application's method for processing organic wastewater embodiment.As shown in Figure 1, described method can comprise:
S301: input organic waste water is in backflow tank, and the flow of the organic waste water of record input backflow tank.
S302: the photocatalyst and the hydrogen peroxide that add predetermined amount in backflow tank, and described photocatalyst, hydrogen peroxide are mixed with the organic waste water in backflow tank.
S303: described Catalyzed by Ultrasonic Wave device launches ultrasonic wave, processes the organic waste water flowing through ultrasonic unit.
S304: the ultra violet lamp in photocatalysis apparatus is mixed with the organic waste water of photocatalyst, carries out oxide treatment to described organic waste water.
S305: the waste water after utilizing catalyst recovery devices to be separated described process obtains photocatalyst and process water.
S306: export described photocatalyst in backflow tank, export described process water in effluent trough, and record flows out to the process discharge of effluent trough.
Further, described method can also comprise:
S307: utilize the process discharge control inputs of record to the organic waste water flow in backflow tank.
Further, described method can also comprise:
S308: the very first time interval of presetting, carries out back flushing to described catalyst recovery devices and obtains remaining in the photocatalyst in described catalyst recovery devices, exports described residual photocatalyst in backflow tank.
Below to utilize the device embodiment of the application to realize above-mentioned method for processing organic wastewater, illustrate the method for processing organic wastewater of the application.Particularly, can comprise:
Can inlet valve be opened, the waste water that has in inlet flume is flowed in backflow tank by the first pipeline.Described feed water flow gauge can record the flooding velocity of the organic waste water flowing into backflow tank from described inlet flume.The flooding velocity of described record can be real-time traffic.Described flooding velocity can be controlled by the folding size controlling inlet valve.
Photocatalyst and the hydrogen peroxide that mouth adds predetermined amount in described backflow tank can be added by catalyzer.The scope of the photocatalyst of described predetermined amount can be: 0.2 ~ 0.5g/L (grams per liter), and further, the scope of the photocatalyst of described predetermined amount can be: 0.5 ~ 2g/L (grams per liter).
After adding described photocatalyst and hydrogen peroxide, can open described aerating apparatus, described aerating apparatus can make the organic waste water refluxed in tank mix fully with described photocatalyst, hydrogen peroxide.
Open the first backflow water valve, the organic waste water being mixed with photocatalyst can be inputed in ultrasonic unit in described backflow tank.In this process, described back-water gauge can record the recirculation water flow being mixed with the organic waste water of photocatalyst and hydrogen peroxide flowed out from backflow tank.The recirculation water flow of described record can be real-time traffic.Described recirculation water flow can be controlled by the folding size controlling the first backflow water valve.
Open the ultrasonic probe in ultrasonic unit, the organic waste water flowing through ultrasonic wave pipe is processed.Hydrogen peroxide can produce hydroxy radical qiao oxidation of organic compounds under ul-trasonic irradiation, can improve the oxidation effectiveness of objectionable impurities in light organic waste water.In addition can produce nanocatalyst suspension by ultrasonic wave dissemination, can photocatalysis efficiency be improved.Organic waste water after described ultrasonic unit process can flow in photocatalysis apparatus.
Open ultraviolet lamp power supply, for the ultraviolet lamp in described photocatalysis apparatus provides electric energy.Described ultraviolet lamp sends the organic waste water that UV-irradiation flows into photocatalysis apparatus.The wavelength of described UV-light can be 254nm (nanometer).Under the effect of described photocatalyst, the water through UV-irradiation can produce the hydroxyl radical free radical with stronger oxidation capacity.Described hydroxyl radical free radical can generate carbonic acid gas and other mineral ions by the pollutent in oxidized organic wastewater, thus realizes the process of organic waste water.
Waste water after process can flow in catalyst recovery devices.Filtering membrane in described catalyst recovery devices can adopt ceramic membrane.The membrane flux of described ceramic membrane can be more than or equal to 100L/m
2h (rising/(square meter hour)).Through the process of described catalyst recovery devices, the organic waste water after described process can be separated into photocatalyst and process water.
Open the first valve, described process water can be output to effluent trough.Open the second backflow water valve, described photocatalyst can be output to recycle in backflow tank.In order to ensure that photocatalyst can be output to backflow tank, a small amount of isolated process water can be utilized to mix described photocatalyst, and export the described a small amount of process water being mixed with photocatalyst to backflow tank, realize the recycle of photocatalyst.Actual tests shows, is 1000L/m at membrane flux
2when h, process acrylic nitrile waste water, the treatment time is 2h, and catalyst recovery yield can reach 99.9%.
Described water flow meter can record the water flow exporting effluent trough to.The water flow of described record can be real-time traffic.
In order to ensure that, under the effect of the photocatalyst of predetermined amount, organic waste water can be processed effectively, also need the total amount of the organic waste water controlled in backflow tank.Such as, the flooding velocity of the organic waste water inputing to backflow tank from inlet flume can be controlled.Utilize record process water water flow can control inputs to backflow tank in organic waste water flow.Such as, the flooding velocity that can control the organic waste water inputed to backflow tank from described inlet flume equals the water flow of described process water.
Further, when described device comprises air compressor machine, surge tank, described method can also comprise:
The very first time interval of presetting, carries out back flushing to described catalyst recovery devices and obtains remaining in the photocatalyst in described catalyst recovery devices, exports described residual photocatalyst in backflow tank.Particularly, close the first valve, open the second valve, utilize air compressor machine to produce gas and air pressure, described gas can enter in described catalyst recovery devices, makes the photocatalyst sticked in catalyst recovery devices be recoiled out.The rate of recovery of catalyzer can be improved.The value at described very first time interval can be chosen according to actual tests result, such as, can choose 200 hours.
The method for processing organic wastewater that the present embodiment provides, after the organic waste water being mixed with photocatalyst is processed, utilize catalyst recovery devices to be separated the organic waste water after process, be separated the photocatalyst obtained and can realize recycle, reduce the cost of process organic waste water.Meanwhile, adopt ultrasonic unit to process the organic waste water flowing through ultrasonic wave pipe, hydrogen peroxide can be made under ul-trasonic irradiation to produce hydroxy radical qiao oxidation of organic compounds, improve the oxidation effectiveness of objectionable impurities in light organic waste water.In addition, nanocatalyst suspension can be produced by ultrasonic wave dissemination, can photocatalysis efficiency be improved.Back flushing is carried out to described catalyst recovery devices, the rate of recovery of photocatalyst can also be improved further, reduce the cost of process organic waste water further.
Each embodiment in this specification sheets all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually see, what each embodiment stressed is the difference with other embodiments.
Although depict the application by embodiment, those of ordinary skill in the art know, the application has many distortion and change and do not depart from the spirit of the application, and the claim appended by wishing comprises these distortion and change and do not depart from the spirit of the application.
Claims (10)
1. a photocatalyst retrieving arrangement, is characterized in that, for reclaiming the photocatalyst comprised in the water after treatment of Organic Wastewater; Comprise: for intake first end, for discharge filter after the second end of water and the 3rd outlet for discharging the water containing photocatalyst;
Comprise filtration channel in described device, described filtration channel comprises feed-water end and water side;
The feed-water end of described filtration channel is connected with described first end, and described first end is connected with the outlet of photocatalysis apparatus, and the feed-water end of described filtration channel is for flowing into the water not isolating photocatalyst;
The filtering membrane being transverse to described filtration channel is provided with, the photocatalyst comprised in the waste water after described filtering membrane is used for intercept process between the feed-water end of described filtration channel and water side;
The feed-water end side of described filtration channel and described filtering membrane adjacent are provided with filtration openings, and described filtration openings is for discharging the water containing photocatalyst; Described filtration openings and the described 3rd exports and is connected; Described 3rd outlet is connected with the backflow tank that untreated organic waste water is housed;
The water side of described filtration channel is for discharging the process water after described membrane filtration; The water side of described filtration channel is connected with described second end, and described second end is connected with the effluent trough for the process water after stored filter.
2. a kind of photocatalyst retrieving arrangement as claimed in claim 1, it is characterized in that, described filtration channel has one at least; Described filtering membrane adopts ceramic membrane; The membrane flux of described ceramic membrane is: be more than or equal to 100 liters/(square meter hour).
3. a kind of photocatalyst retrieving arrangement as claimed in claim 1, it is characterized in that, also comprise: air compressor machine and recoil tank, described recoil tank is connected between described air compressor machine with described second end, and described air compressor machine recoils to the filtering membrane in described filtration channel through surge tank for generation of gas.
4. an organic waste-water treating apparatus, is characterized in that, comprising: inlet flume, ultrasonic unit, photocatalysis apparatus, ultraviolet light source, catalyst recovery devices and effluent trough; Wherein,
Described inlet flume be one formed by sidewall and bottom there is upper uncovered container, the side wall lower ends of described inlet flume or bottom are provided with a lower ending opening;
Described backflow tank is the unopened container having top, sidewall and bottom to be formed, the top of described backflow tank is provided with catalyzer and adds mouth, the top of described backflow tank is provided with top end opening, and the top end opening of described backflow tank is connected by the first pipeline with the lower ending opening of described inlet flume; Side wall lower ends or the bottom of described backflow tank are provided with a lower ending opening;
Described ultrasonic unit comprises ultrasonic wave duct and is built in the ultrasonic probe in described ultrasonic wave duct; The entrance end of described ultrasonic wave duct is connected by the lower ending opening of second pipe with described backflow tank, and the exit end of described ultrasonic wave duct is connected with the first end of described photocatalysis apparatus;
Described photocatalysis apparatus is comprise the through tubing string in the two ends of first end and the second end; Described tubing string horizontal positioned, is provided with ultraviolet lamp tube in described tubing string, and described ultraviolet lamp tube runs through in described tubing string; Described ultraviolet light source is connected by electric wire with described ultraviolet lamp tube;
Described catalyst recovery devices comprise first end for intaking, for discharge filter after the second end of water and the 3rd outlet for discharging the water containing photocatalyst; The first end of described catalyst recovery devices is connected by the 3rd pipeline with the second end of described photocatalysis apparatus;
Comprise filtration channel in described catalyst recovery devices, described filtration channel comprises feed-water end and water side;
The feed-water end of described filtration channel is connected with described first end, and described first end is connected with the outlet of photocatalysis apparatus, and the feed-water end of described filtration channel is for flowing into the water not isolating photocatalyst;
The filtering membrane being transverse to described filtration channel is provided with, the photocatalyst comprised in the waste water after described filtering membrane is used for intercept process between the feed-water end of described filtration channel and water side;
The feed-water end side of described filtration channel and described filtering membrane adjacent are provided with filtration openings, and described filtration openings is for discharging the water containing photocatalyst; Described filtration openings exports with the 3rd of described catalyst recovery devices and is connected; 3rd outlet of described catalyst recovery devices is connected with backflow tank;
The water side of described filtration channel is for discharging the process water after described membrane filtration; The water side of described filtration channel is connected with described second end, and described second end is connected with the effluent trough for the process water after stored filter.
5. a kind of organic waste-water treating apparatus as claimed in claim 4, is characterized in that, also comprise: the bottom of described backflow tank is also provided with aerating apparatus.
6. a kind of organic waste-water treating apparatus as claimed in claim 4, is characterized in that, also comprise:
Described first pipeline is provided with inlet valve and feed water flow gauge;
Described second pipe is provided with the first backflow water valve and back-water gauge;
Described 4th pipeline is provided with the second backflow water valve;
Described 5th pipeline is provided with the first valve and water flow meter.
7. a kind of organic waste-water treating apparatus as claimed in claim 6, is characterized in that, also comprise: air compressor machine, the 6th pipeline, surge tank and the second valve;
Described surge tank is the through tubing string containers in two ends, and described tubing string container upright is placed;
Described air compressor machine is connected with the 5th pipeline by the 6th pipeline; Described 6th pipeline is being separated between the second outlet and the first valve with the junction of described 5th pipeline; Described 6th pipeline is provided with surge tank, and described surge tank is connected with described 6th pipeline; Described second valve is arranged on the 6th pipeline, and described second valve is arranged between described air compressor machine and described surge tank.
8. a kind of organic waste-water treating apparatus as claimed in claim 4, is characterized in that, also comprise: automatic control device; Described automatic control device is connected with described second valve with described first valve respectively; Described automatic control device controls the folding of described first valve and described second valve.
9. a kind of organic waste-water treating apparatus as claimed in claim 4, is characterized in that, adopts ceramic membrane in described catalyst recovery devices; The membrane flux of described ceramic membrane is: be more than or equal to 100 liters/(square meter hour).
10. a method for processing organic wastewater, is characterized in that, comprising:
Input organic waste water is in backflow tank, and the flow of the organic waste water of record input backflow tank;
Add photocatalyst and the hydrogen peroxide of predetermined amount in backflow tank, and described photocatalyst, hydrogen peroxide are mixed with the organic waste water in backflow tank;
Described Catalyzed by Ultrasonic Wave device launches ultrasonic wave, processes the organic waste water flowing through ultrasonic unit;
Ultra violet lamp in photocatalysis apparatus is mixed with the organic waste water of photocatalyst, carries out oxide treatment to described organic waste water;
Waste water after utilizing catalyst recovery devices to be separated described process obtains photocatalyst and process water;
Export described photocatalyst in backflow tank, export described process water in effluent trough, and record flows out to the process discharge of effluent trough.
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Application publication date: 20150225 |