KR20100086980A - Devices to treat waste-air - Google Patents

Abstract

PURPOSE: A gas scrubber and a method thereof are provided to be capable of continuous operation of UV or visible ray photocatalyst reaction, thereby continuously processing foul water including waste gas or urban sewage or industrial wastewater including bad smell and VOC. CONSTITUTION: A gas processing method is composed of a stage of introducing waste gas and a stage of reaction of UV or visible ray/photocatalyst. A gas scrubber is composed of a media current switch which a media is supplied by converting the current direction of a media from other UV which photocatalyst is activated or entrance of visible ray/photocatalyst reaction. According to a blower(34) blowing waste gas which VOC or the source of bad smell is included, a flow meter respectively measuring flow and concentration, a real time concentration analyzer, two or more UV or visible ray/photocatalyst reaction system(6,8), a real concentration analyzer analyzing breakthrough concentration of processing waste gas in the entrance of UV which waste gas is flown in or visible ray/photocatalyst reaction system, a concentration instruction system(12,13) which transmits a signal if breakthrough concentration of processing waste gas is higher than setting concentration, waste gas current switch converting the flow direction of waste gas including bad smell and VOC which is introduced by received signal to the entrance of other UV which photocatalyst is activated or visible ray/photocatalyst reaction and a media blower(5) necessary for photocatallyst reproduction which is inactivated by received signal.

Description

Waste gas treatment device {Devices to treat waste-air}

The present invention, unlike the existing method of stopping the operation of the photocatalytic reactor to regenerate the deactivated photocatalyst, the object of treatment containing odor and VOC for the purpose of continuous operation of the UV (or visible light (VIS-)) / photocatalytic reactor Two or more UV (or VIS-) / photocatalytic reactors and photocatalytically activated photocatalytic reactors in which the supply of waste gas or wastewater, including municipal sewage or industrial wastewater, and the supply of air for inactivating the photocatalyst alternately swings. UV or visible light (VIS-) before or after washing the waste gas passed or the residual load of sewage water containing municipal sewage or industrial waste water and inactivated photocatalyst of other photocatalytic reactor in ultrasonic or non-ultrasound environment Adsorption, biofilter, biofilter that handles desorbed source load when regenerating with air or steam while it is turned on Volatile organic compounds comprising a post-process or a combination of post-processes capable of treating biological treatment, absorption, combustion, plasma, electron beams, AOP (Advanced oxidation process) or equivalent volatile organic compounds or odor pollutants, except The present invention relates to a process and apparatus as shown in FIG. 1 for treating an air or waste gas containing a malodorous pollutant or sewage water containing municipal wastewater or industrial wastewater.

By measuring the gas phase of nC ₇ H ₁₆ SO ₂ and photocatalytic activity of the photocatalytic TiO ₂ and ZnO nanoparticles oxidize nC ₇ H ₁₆ In this case, only ZnO is deactivated and TiO ₂ remains active but SO ₂ In this case, it was observed that both types of photocatalysts were deactivated, and the deactivation of the photocatalyst was suggested that the conduction pattern of the semiconductor surface was changed from N type before photocatalytic reaction to P type after deactivation due to adsorption of oxides such as water and carbon dioxide. It became. The deactivated photocatalytic nanoparticles were reported to be recovered almost intact after drying for 24 hours at 70 ° C. after distilled water washing and centrifugation in an ultrasonic environment. [Liqiang et al., Applied Catalysis A: General, 275, 49- 54, 2004]. As described above, when treating waste gas containing odors and VOCs or wastewater containing urban sewage or industrial wastewater through a photocatalytic reactor carrying a photocatalyst, which has been spotlighted as an environmental catalyst, the oxidation of pollutants over time Due to the deactivation of the photocatalyst by the adsorption of intermediate derivatives, the photocatalytic removal capacity of the photocatalytic reactor is less than the design criteria, so the photocatalytic regeneration of the UV (or VIS-) / photocatalytic reaction process is required. The desorption source load introduced into is characterized by a fluctuating load or shock loading greater than the desorption source load in the post-process after the initial photocatalyst regeneration. Therefore, a robust design that can handle temporary fluctuating load is essential for the post process.

The following studies were carried out on the deactivation and regeneration of the three photocatalysts. Medina-Valtierra et al. [Applied Surface Science, 252, 3600-3608, 2006] investigated the regeneration of photocatalytic activity of anatase photocatalytic coatings containing Degusa P25 TiO ₂ nanoparticles that oxidize phenols in air. It was reported that the activity of all photocatalysts was regenerated when maintained at 450 ° C. for 3 hours, which was the temperature at which the photocatalyst was calcined. Vorontsov et al. [Applied Catalysis B: Environmental, 44, 25-40, 2003] reported that gaseous diethylsulfide (DES) was washed 20 times with a TiO ₂ suspension, which was deactivated by photocatalytic oxidation in a TiO ₂ deposited coil reactor. The TiO ₂ photocatalyst is either continuously irradiated with ultraviolet light until the adsorbed organic product is completely inorganic (after washing with sulfuric acid in the washed water), or 2) immediately with water (intermediate organic product in the washed water). To report regeneration. On the other hand, TiO ₂ by sulfuric acid of the photocatalyst An irreversible deactivation, described by etching, has also been reported. Cao et al. [Journal of Catalysis, 196, 253-261, 2000] observed photocatalytic oxidation of toluene using nanoscale TiO ₂ photocatalysts, which showed that 100% of the deactivated photocatalyst was heated at temperatures above 420 ° C for 2 hours. Reported that regeneration is possible. Chang et al. [Chemosphere, 58, 1071-1078] reported that N, N'-dimethylformamide (DMF) in the gaseous phase was 10% (Degussa P-25) TiO _2. The tube was coated with a slurry to observe UV / photocatalytic oxidation and the deactivation of the photocatalyst was reported. Among various photocatalyst regeneration methods, it was reported that the regeneration effect was almost 100% when the photocatalyst deactivated with hydrogen peroxide in the UV environment.

Patent Publication No. 10-2004-0073637 is a problem in that it is impossible to treat a biological treatment system at a high concentration range of volatile organic compounds. Disclosed is a method and apparatus for selectively treating biological and photochemical treatments using only a biofilter when the concentration is lowered to a degree that can be treated with a biofilter and when the concentration is low. However, in Patent Publication No. 10-2004-0073637, it is a problem to be solved that the biological treatment system cannot be treated in the high concentration range of the volatile organic compound, and thus lowers the concentration from the high concentration range of the volatile organic compound to the bioavailable concentration. Although dilution, adsorption, absorption or other waste gas treatment methods could be selected as pretreatment processes, the motivations and objectives of presenting the photochemical methods and the synergies of hybrid systems consisting of photocatalytic reactors and biofilters were not mentioned. In Examples and Comparative Examples of Patent Publication No. 10-2004-0073637, only the performance results when only the biofilter and the biofilter consisting of a biofilter and a UV / photocatalytic reactor were operated were compared with each other. Presenting It did. Therefore, rather than claiming the hybrid system itself consisting of photocatalytic reactor and biofilter, it is a problem to solve the problem that biological treatment is impossible at high concentration range of volatile organic compounds. The invention claims a method and apparatus for selectively using biological and photochemical treatments.

When treating waste gas containing odors and VOCs or wastewater containing municipal sewage or industrial wastewater through a UV (or VIS-) / photocatalytic reactor carrying a photocatalyst, oxidation of the pollutant over time Due to the deactivation of the photocatalyst by adsorption of the intermediate derivatives, the UV (or VIS-) / photocatalytic reaction process becomes impossible because the UV (or VIS-) / photocatalytic reactor's pollutant removal capacity is less than the design standard. . Therefore, in order to solve this problem, a new UV (or VIS-) / photocatalytic reaction process that enables continuous operation of the UV (or VIS-) / photocatalytic reaction process is required.

On the other hand, when the deactivated photocatalyst is reversibly regenerated by air or steam with UV or visible light (VIS-) turned on before, after, or after washing in an ultrasonic environment or non-ultrasound environment, the desorbed source load is treated. There is a need for post-processing or a combination of post-processes that can handle biological treatments, absorption, combustion, plasma, AOP or equivalent desorption source loads other than adsorption, biofilters, biofilters. In addition, the combination of these UV (or VIS-) / photocatalytic and post-process processes must produce synergy effects and be economical.

The problem solving means of the present invention can be largely classified into two cases. In the first case, the problem solving means for regenerating the inactivated photocatalyst supported or coated on the photocatalyst carrier irrespective of the adsorption capacity of the photocatalyst carrier. In the second case, the photocatalyst having a very high adsorption capacity filled in the UV (or VIS-) / photocatalytic reactor It is a problem solving means for regenerating an inactivated photocatalyst supported or coated on a carrier at a high temperature.

The first solution is that the deactivation of the photocatalyst results in the inability to continue the operation of the UV (or VIS-) / photocatalytic reactor as the decontamination capacity of the UV (or VIS-) / photocatalytic reactor is less than the design criteria. And two or more UV (or thorns) alternately swinging supplies of, but not limited to, waste gas subject to treatment containing VOCs, municipal waste or industrial wastewater and air or water vapor for inert photocatalyst regeneration, including but not limited to VIS-) / photocatalytic reactor and the waste gas that has passed through the photocatalytic activated photocatalytic reactor, or the residual load of sewage water including urban sewage or industrial wastewater and inactivated photocatalysts of other photocatalytic reactors in ultrasonic or non-ultrasound environment. Air or water vapor with UV or visible light (VIS-) turned on before, after or before Adsorption that treats desorbed contaminant loads together when regenerated by non-limiting desorption media, biological treatments including biofilters, post-processes that can treat volatile organic compounds or odor pollutants, including absorption, combustion, plasma, AOP or equivalent Or a hybrid system characterized by a combination of post-processes to continuously and efficiently treat wastewater containing atmospheric or waste gases containing volatile organic compounds or odor pollutants, or municipal wastewater or industrial wastewater. .

A second problem solution is the supply of desorbable media, including but not limited to waste gas subject to treatment containing odors and VOCs, or sewage water containing municipal sewage or industrial wastewater, and hot steam or non-combustible gases required for inactivated photocatalyst regeneration. Above the boiling point of the volatile organic compounds contained in two or more alternately swinging UV (or visible-vis) / photocatalytic reactors and superheated steam or waste gas, or municipal wastewater including municipal sewage or industrial wastewater, in the desorption medium. Inert photocatalysts charged to UV (or visible light) / photocatalytic reactors containing, but not limited to, non-combustible gases at temperature are cleaned before, after or after washing in an ultrasonic or non-ultrasound environment. Combustion or equivalent combustion of desorbed source loads during regeneration with UV or visible light on or before Hybrid system characterized by a post-process or a combination of post-processes capable of treating organic compounds or malodorous pollutants, and wastewater containing air or waste gases containing volatile organic compounds or malodorous pollutants, or municipal sewage or industrial wastewater. It is to ensure that the process is continuously and efficiently and safely.

The effect of the present invention,

First, two or more UVs that alternately supply, but are not limited to, the supply of waste gases containing odors and VOCs, or sewage water containing municipal sewage or industrial wastewater and air or water vapor, which is not limited, but necessary for inactivating photocatalytic regeneration. Or by using a visible light (VIS-) / photocatalytic reactor, the UV (or VIS-) / photocatalyst as the decontamination capacity of the UV (or VIS-) / photocatalytic reactor is less than the design criteria due to the deactivation of the photocatalyst By overcoming the inability to continuously operate the reactor, there is an effect capable of continuously treating waste gas containing odors and volatile organic compounds (VOC), or waste water containing urban sewage or industrial wastewater.

Second, the residual load of waste gas passing through a photocatalytic activated photocatalytic reactor or wastewater containing municipal sewage or industrial wastewater, and the deactivated photocatalyst of another photocatalytic reactor before, after or before or after washing in an ultrasonic or non-ultrasound environment. Adsorption of desorbed pollutant loads when reversibly regenerated by desorption media including but not limited to air or water vapor with UV or visible light (VIS-) turned on, biological treatment except biofilters, biofilters, absorption and combustion , Waste gas containing odors and VOCs, or municipal wastewater or industrial wastewater, including plasma, electron beams, advanced oxidation processes (AOPs) or equivalent volatile organic compounds or processes capable of treating malodorous sources. Two or more UV (or Visible) / Photocatalysts that alternately swing air and air By adding as a post-process reactor of wastewater containing waste gases or urban sewage or industrial waste water containing the odor and the volatile organic compound (VOC) has the effect that can be processed successfully without breakthrough of the residual contaminants.

Third, two or more UVs that alternately supply, but are not limited to, the supply of waste gas subject to treatment of odors and VOCs, or sewage water containing municipal sewage or industrial wastewater, and air or water vapor, which is not limited, but necessary for inactivating photocatalytic regeneration. Or a waste gas containing odor and volatile organic compounds (VOC) due to the synergistic nature of this hybrid system when a biofilter or a biological treatment other than a biofilter is selected as a post-visible (VIS-) / photocatalytic reaction process. In addition, there is an effect that can economically treat wastewater, including municipal wastewater or industrial wastewater.

FIG. 1 shows two UV (or visible-vis) / photocatalytic reaction systems in which the supply of waste gases containing odors and VOCs and the supply of a medium for regeneration of an inactivated photocatalyst alternately swing.
FIG. 2 is an apparatus or apparatus capable of treating a sorbent, a biofilter, a biological treatment apparatus other than a biofilter, an absorber, a combustion apparatus, a plasma apparatus, an AOP (Advanced oxidization process) apparatus, or an equivalent volatile organic compound or odor source. A waste gas aftertreatment device or process consisting of a combination of these processes treats atmospheric or waste gases containing odors or volatile organic compounds added to two UV (or Visible) / photocatalytic reaction systems for waste gas treatment. Drawing showing the integrated system
FIG. 3 shows a desorption VOC combustion device or a process comprising a combustion device or a combination of devices or devices capable of treating volatile organic compounds or odor pollutants, the two UV (or visible light) for waste gas treatment. Figure showing an integrated system for treating air or waste gas containing volatile organic compounds added to photocatalytic reaction process systems
FIG. 4 shows a wash liquor circulation system for cleaning UV (or VIS-) / photocatalytic reactors (for wastewater treatment, including waste gas or municipal sewage or industrial wastewater).
FIG. 5 shows two UV (or visible-vis) / photocatalytic reaction process systems in which the supply of wastewater, including municipal sewage or industrial wastewater to be treated, and the supply of a medium for inactivating photocatalysts alternately swings.
FIG. 6 is a wastewater desorption gas treatment apparatus for treating sewage gas generated from regeneration of an inactivated photocatalyst and a sewage wastewater aftertreatment including urban sewage or industrial wastewater, or processes thereof. (VIS-)) / Drawing showing an integrated system for treating sewage water, including municipal wastewater or industrial wastewater containing volatile organic compounds or other contaminants added to the photocatalytic reaction process system.

The first configuration of the present invention is 1) an introduction part consisting of a waste gas blower 34 introducing a waste gas, a flow meter 1 and a real-time concentration analyzer 2 to treat waste gas containing volatile organic compounds and odor pollutants, 2) Two or more UV (or VIS-) / photocatalytic reactor systems that alternately supply, but are not limited to, supply of odor and VOC-treated waste gas and air or water vapor for inert photocatalyst regeneration. UV (or visible light (VIS-)) / photocatalytic reaction process (in Figure 1 two UV (or visible light (VIS-)) / UV (or visible light consisting of photocatalytic reactor systems 6 and 8) -)) / Photocatalytic reaction process).

The second configuration of the invention is added to the configuration of the invention in Figure 1, as in Figure 2; Residual load of the waste gas passing through the photocatalytic activated photocatalytic reactor and the deactivated photocatalyst of the other photocatalytic reactor turn on air with UV or visible light (VIS-) turned on before, after or before cleaning in ultrasonic or non-ultrasound environment. Or biological treatments other than adsorption, biofilters, biofilters that treat desorbed contaminant loads together when reversibly recovered by a desorbent, including but not limited to water vapor, absorption, combustion, plasma, Advanced oxidization process (AOP) or It consists of a waste gas aftertreatment device 20 which is a process or a combination of processes capable of treating volatile organic compounds or odor pollutants equivalent thereto.

In the process shown in Fig. 1, the waste gas containing the volatile organic compound or the odor source is blown by the blower 34 so that the flow rate and the concentration are measured by the flow meter 1 and the real-time concentration analyzer 2, respectively. Real-time at the exit of the UV (or VIS-) photocatalyst system during operation of the UV (or VIS-) / photocatalytic reactor system which is introduced into one of the two UV (or VIS-) / photocatalytic reactor systems 6 and 8 When the breakthrough concentration of the treated waste gas is analyzed by the concentration analyzer (10 and 11) and the concentration is higher than the set concentration, the waste gas flow converter (3) and the desorption medium flow converter (4) are simultaneously signaled and operated so that the waste gas flow is different from UV. (Or VIS-) / photocatalytic reactor system inlet, while desorption media flow is fed from other UV (or VIS-) / photocatalytic reactor system. The UV (or VIS-) / photocatalytic reactor system, which is supplied with a desorption medium, reversibly regenerates the deactivated photocatalyst by air or steam with UV on before, after or before washing in an ultrasonic or non-ultrasound environment. . The flushing liquid sprayed with the sprays 7 and 9 fills the bottom of the UV (or VIS-) / photocatalytic reactor 24 and operates the wash liquid open / close valve 30 as shown in FIG. 4 to operate the UV (or VIS-) / photocatalyst. It is discharged under the reactor 24 and circulated to the washing liquid tank 32 by the washing liquid circulation pump 31. The outer diameter of the VIS-photocatalytic reactor 24 utilizing the VIS-light source is designed to be made of transparent glass, plastic or equivalent transparent material such that external visible or solar light reaches the VIS-photocatalytic reactor.

As shown in FIG. 2, the residual load of the waste gas passing through the photocatalytic activated UV (or VIS-) / photocatalytic reactor system and the deactivated photocatalyst of the other UV (or VIS-) / photocatalytic reactor system are determined in an ultrasonic or non-ultrasound environment. When reversibly regenerated by a desorption medium with UV on before, after or after washing, desorbed contaminant loads combine to absorb adsorption, biological treatment including biofilters, absorption, combustion, plasma, AOP or equivalent volatility. It is processed in step 20 after a process or combination of processes that can treat organic compounds or odor sources.

On the other hand, when biological treatment except biofilter or biofilter is selected as a post process of UV (or VIS-) / photocatalytic reaction process, it is difficult to biologically treat odor and VOC concentration in waste gas introduced into post process by installing mixing tank. If too high, the waste gas is diluted through the mixing bath and then biologically treated. If necessary, dilution air is supplied to the mixing tank with a mixing tank blower.

The third configuration of the present invention is 1) an introduction part consisting of a waste gas blower 34 introducing a waste gas, a flow meter 1 and a real-time concentration analyzer 2 for treating waste gas containing volatile organic compounds and odor pollutants, and 2). Two alternatively swinging supply of desorbable media, including but not limited to non-combustible gases at or above the boiling point of odorous and VOC-treated waste gases and superheated vapors required for inactivated photocatalyst regeneration or volatile organic compounds contained in waste gases. UV (or visible light (VIS-) / photocatalytic reaction process consisting of the above UV (or visible light (VIS-)) / photocatalytic reactor system (two UV (or visible light (VIS-)) / photocatalytic reactor in Figure 3 UV (or visible light (VIS-)) / photocatalytic reaction process consisting of systems 6 and 8), and 3) above the boiling point of volatile organic compounds contained in superheated steam or waste gas. UV (or Visible) (VIS-) / inactivated photocatalyst filled with photocatalytic reactor containing but not limited to flammable gas is cleaned before, after or before or after washing in ultrasonic or non-ultrasound environment. Or a desorption VOC combustion device 23 capable of combusting the desorbed pollutant load when regenerating with visible light (VIS-) turned on or treating volatile organic compounds or odor pollutants equivalent thereto.

In the process shown in FIG. 3, waste gas containing a volatile organic compound or odor pollutant is blown by a blower 34 so that the flow rate and concentration are measured by the flow meter 1 and the real-time concentration analyzer 2, respectively. Inlet of one of the two UV (or VIS-) / photocatalytic reactor systems 6 and 8 and at the exit of the UV (or VIS-) / photocatalytic reactor system during operation of the UV (or VIS-) / photocatalytic reactor system in which waste gas is introduced. When the breakthrough concentration of the treated waste gas is analyzed by the real-time concentration analyzer (10 and 11) and higher than the set concentration, the waste gas flow converter (3) and the desorption medium flow converter (4) are simultaneously signaled and operated so that the waste gas flow is different. Converted to UV (or VIS-) / photocatalytic reactor system inlet, while containing but not limited to air above the boiling point of volatile organic compounds contained in superheated steam or waste gas Desorption media streams are fed by conversion from other UV (or VIS-) / photocatalytic reactor systems. The UV (or VIS-) / photocatalytic reactor system, which is supplied with this desorption medium, is reversible with UV or visible light (VIS-) turned on before, after or before washing the deactivated photocatalyst in an ultrasonic or non-ultrasound environment. Play with The desorbed pollutant load during photocatalyst regeneration is guided to the process gas flow converter 22 and treated with a desorbed VOC combustion device 23 capable of treating combustion or equivalent volatile organic compounds or odor pollutants. The washing liquid sprayed with the spray 7 fills the lower part of the UV (or VIS-) / photocatalytic reactor 24 and operates the washing liquid opening / closing valve 30 as shown in FIG. 4 to operate the UV (or VIS-) / photocatalytic reactor ( 24) it is circulated to the washing liquid tank 32 by the washing liquid circulation pump 31. The outer diameter of the VIS-photocatalytic reactor 24 utilizing the VIS-light source is designed to be made of transparent glass, plastic or equivalent transparent material such that external visible or solar light reaches the VIS-photocatalytic reactor.

The fourth configuration of the present invention is 1) Feed pump 35, wastewater pretreatment process 44, wastewater flow meter for introducing wastewater to treat wastewater including municipal sewage or industrial wastewater containing volatile organic compounds or other pollutants. (36) and an introduction section consisting of water quality analyzers (37), (2) sewage water containing municipal sewage or industrial waste water containing volatile organic compounds and other pollutants, and volatile organic matter contained in superheated steam or sewage water required for inactivated photocatalyst regeneration. UV (or VIS) consisting of two or more UV (or VIS-) / photocatalytic reactor systems that alternately swing the supply of desorbent, including but not limited to non-combustible gases at temperatures above the boiling point of the compound /) Photocatalytic reaction process (in Figure 5 UV (or visible light) consisting of two UV (or visible light (VIS-)) / photocatalytic reactor systems 51 and 52 -)) / Photocatalytic reaction process).

The wastewater containing municipal sewage or industrial wastewater containing volatile organic compounds or other pollutants as the process in FIG. 5 is conveyed by a feed pump 35 to treat the wastewater pretreatment process 44, the wastewater flowmeter 36, and the water quality analyzer. (37), the wastewater flow rate and the concentration of COD, chromaticity, suspended solids, etc. are respectively measured, and the wastewater is introduced into one of two UV (or VIS-) / photocatalytic reactor systems 51 and 52, and the UV into which the wastewater is introduced. (Or VIS-) / photocatalytic reactor system The breakthrough concentrations of the wastewater treated by the water quality analyzers 39 and 40 at the exit of the UV (or VIS-) / photocatalytic reactor system are analyzed and the water quality indicators 49 and 50) simultaneously signal and act on the sewage water flow diverter 38 and the desorption medium flow diverter 4, respectively, so that the sewage stream is treated with other photocatalytically activated UV (or VIS-) / photocatalytic reactor systems. Conversion to the inlet and, on the other hand the wastewater feed is stopped in the UV photocatalyst is disabled, the photocatalytic reactor, the other photocatalyst enable removable medium flow from empty-are supplied by switching to / from the photocatalytic reactor system (or VIS). The UV (or VIS-) / photocatalytic reactor system, which is supplied with a desorption medium, reversibly regenerates the deactivated photocatalyst with UV on before, after or before washing in an ultrasonic or non-ultrasound environment. In addition, the desorbed medium 42 flowing through the photocatalytic reactor is introduced to the wastewater desorption gas treatment device 45 using the desorbed medium flow converter 41.

The flushing liquid sprayed with the sprays 7 and 9 fills the bottom of the UV (or VIS-) / photocatalytic reactor 24 and operates the wash liquid open / close valve 30 as shown in FIG. 4 to operate the UV (or VIS-) / photocatalyst. It is discharged under the reactor 24 and circulated to the washing liquid tank 32 by the washing liquid circulation pump 31. The outer diameter of the VIS-photocatalytic reactor 24 utilizing the VIS-light source is designed to be made of transparent glass, plastic or equivalent transparent material such that external visible or solar light reaches the VIS-photocatalytic reactor.

The fifth constitution of the present invention is added to the constitution of the invention in Fig. 5, as shown in Fig. 6; Adsorption to discharge the highly treated wastewater (48) by treating the residual load of the municipal wastewater including urban sewage or industrial wastewater passing through the photocatalytic activated photocatalytic reactor, biological treatment except water treatment biofilter, water treatment biofilter, A sewage after-treatment apparatus 47 comprising a process or a combination of processes capable of treating an AOP (Advanced oxidization process) or equivalent volatile organic compound or other pollutant source;

And

Inactivated photocatalysts of other photocatalytic reactors at temperatures above the boiling point of volatile organic compounds contained in superheated steam or sewage with UV or visible light (VIS-) turned on before, after or before washing in an ultrasonic or non-ultrasound environment. Adsorption to treat desorbed contaminant loads when reversibly regenerated by non-combustible desorption media, including but not limited to, biological treatments including biofilters, absorption, combustion, plasma, advanced oxidization process (AOP) or equivalent It consists of a wastewater desorption gas treatment device 45 consisting of a process or a combination of processes capable of treating volatile organic compounds or odor pollution sources.

Residual loads of sewage water, including municipal sewage or industrial wastewater, which have passed through a photocatalytic activated UV (or VIS-) / photocatalytic reactor system as a process of FIG. 6, have been treated in a sewage after-treatment process 47 and highly treated sewage water ( 48), and the desorption medium including the desorption source load generated during the regeneration of the deactivated photocatalyst is treated in the wastewater desorption gas treatment apparatus 45. On the other hand, when a biofilter or a biological treatment other than a biofilter is selected as the desorption gas treatment device 45, a mixing tank is installed, and the desorption source concentration introduced into the wastewater desorption gas treatment device 45 is odor and VOC concentration is biological treatment. Is too high, it is biologically treated after diluting the waste gas through a mixing bath. If necessary, dilution air is supplied to the mixing tank with a mixing tank blower.

1. Flowmeter
2. Real time concentration analyzer
3. Waste gas flow diverter
4. Media Flow Diverter
5. Medium supply blower
6. UV (or VIS-) photocatalytic reactor system
7. Washing liquid spray
8. UV (or VIS-) photocatalytic reactor system
9. Spray cleaning liquid
10. Real time concentration analyzer
11. Real time concentration analyzer
12. Concentration indicator
13. Concentration indicator
14. Bypass Valve
15. Bypass Valve
16. Bypass Valve
17. Bypass Valve
18. Bypass Valve
19. Bypass Valve
20. Residual loads and desorptions, including adsorption units, biofilters, biological treatment units other than biofilters, absorption units, combustion units, plasma units, electron beam units, AOP (Advanced oxidation process) units or equivalent volatile organic compounds or odor pollutants. Waste gas aftertreatment device consisting of a device or a combination of devices capable of treating gas
21. Blowers supplying a medium containing, but not limited to, non-combustible gases above the boiling point of superheated steam or waste gas-containing VOCs.
22. Process gas flow diverter
23. Desorption VOC Combustor
24. UV (or VIS-) photocatalytic reactor (for wastewater treatment, including waste gas or municipal sewage or industrial wastewater)
25. Ultrasonic Environment
26.UV (or Vis-) Lamp
27. UV (or VIS-) photocatalyst
28. Influent waste gas distributor
29. Waste gas shut-off valve
30. Cleaning fluid closing valve
31. Wash Liquid Pump
32. Washing liquid tank
33. Supply of cleaning solution
34. Waste gas blower
35.Feed Pump
36. Sewage Water Flow Meter
37. Water Quality Analyzer
38. Sewage Water Flow Converter
39. Water Quality Analyzer
40. Water Quality Analyzer
41. Desorption media flow converter through photocatalytic reactor for photocatalytic regeneration
42. Desorption medium passing through the photocatalytic reactor for photocatalyst regeneration
43. Photocatalyst Treated Wastewater
44. Sewage Wastewater Treatment System
45. Treats desorption gases, including adsorption units, biofilters, biological treatment units other than biofilters, absorption units, combustion units, plasma units, electron beam units, AOP (Advanced oxidation process) units or equivalent volatile organic compounds or odor pollutants. Sewage desorption gas treatment system consisting of a device or combination of devices
46. Treated Waste Gas
47. Sewage aftertreatment
48. Advanced Treated Sewage
49. Water Quality Analysis Clock
50. Water Quality Analysis Clock
51. UV (or VIS-) photocatalytic reactor system (for water treatment)
52. UV (or VIS-) photocatalytic reactor system (for water treatment)
53. Blowers supplying a medium containing but not limited to non-combustible gases above the boiling point of superheated steam or sewage-containing VOCs.

Claims (8)

A waste gas introduction step consisting of a blower (34) for blowing waste gas containing volatile organic compounds or odor pollutants, a flow meter (1) for measuring the flow rate and concentration, and a real-time concentration analyzer (2)
Two or more UV (or VIS-) / photocatalytic reactor systems (6, 8), a real-time concentration analyzer that analyzes the breakthrough concentration of treated waste gas at the outlet of the UV (or VIS-) / photocatalytic reactor into which waste gas is introduced (10), concentration indicators 12 and 13 which signal when the breakthrough concentration of the treated waste gas is higher than the set concentration, and the photocatalyst is activated in the flow direction of the waste gas containing odor and VOC introduced by the received signal. Waste gas flow diverter (3) for switching to another UV (or VIS-) / photocatalytic reactor inlet, photocatalyst for the direction of flow of media introduced by the media supply blower (5), which is required for photocatalyst regeneration deactivated by the received signal A UV (or Visible-Vis) / Photocatalytic Reaction Process comprising a medium flow diverter (4) supplied with the medium by conversion from another activated UV (or VIS-) / photocatalytic reactor inlet;
Apparatus for treating air or waste gas containing odor or volatile organic compounds, characterized in that The UV (or Visible) / Photocatalytic Reactor (24) of claim 2, wherein each of the two or more UV (or Visible) / Photocatalytic Reactor systems (6, 8) (Or visible (VIS-)) photocatalyst 27 for washing;
Apparatus for treating air or waste gas containing odor or volatile organic compounds, characterized in that the cleaning liquid spray (7) is installed After the waste gas introduction step of claim 1 and the UV (or visible light) / photocatalytic reaction step ;
Only the remaining loads emitted from the UV (or visible light (VIS-) / photocatalytic reaction step of the photocatalyst activated UV (or visible light (VIS-)) / photocatalytic reactor system, or other UV deactivated photocatalyst (Or visible light (VIS-)) / process the desorbed source load together when regenerating the deactivated photocatalyst of the photocatalytic reactor system;
After a waste gas consisting of one or more combinations of adsorption towers, biofilters, biological treatment units other than biofilters, absorption units, combustion units, plasma units, AOP (Advanced oxidization process) units or equivalent volatile organic compounds or odor source treatment units. As processing apparatus 20;
A device for treating air or waste gas containing odors or volatile organic compounds, characterized in that a post-process step is added. 4. The method according to any one of claims 1 to 3, wherein the level of the sprinkled wash liquid filled under the UV (or VIS-) / photocatalytic reactor 24 of the UV (or VIS-) / photocatalytic reactor system is adjusted. Or odor or volatile, characterized in that consisting of the washing liquid opening and closing valve 30 passing under the VIS-) / photocatalytic reactor, the washing liquid circulation pump 31 for transferring the washing liquid to the washing liquid tank 32, washing liquid tank 32, etc. Equipment for treating air or waste gas containing organic compounds 4. The method of claim 3, wherein one or more combinations of the biofilter or biological treatment devices other than the biofilter process only the residual load discharged in the UV (or visible-vis) / photocatalytic reaction step. An apparatus for treating the desorbed pollutant loads together;
When microbial treatment is difficult due to the toxicity of odor or volatile organic compounds of high concentration contained in the waste gas introduced into one or a plurality of combinations of biological filters except the biofilter or the biofilter;
A blower for supplying the dilution air to the mixing tank to dilute the dilution air before the waste gas is introduced into one or a plurality of combinations of the biofilter or the biological treatment apparatus except the biofilter;
A mixing tank for retaining the waste gas and diluting with dilution air;
Apparatus for treating air or waste gas containing odor or volatile organic compounds, characterized in that After the waste gas introduction step and the UV (or VIS −) / photocatalytic reaction step of claim 1 ;
Directing and treating the desorbed pollutant load to the process gas flow converter 22 when regenerating the deactivated photocatalyst of the UV (or visible light) / photocatalytic reactor system;
A desorption VOC combustion device 23 composed of one or more combinations of a combustion device or equivalent volatile organic compound or malodor source treatment device; Apparatus for treating air or waste gas containing odor or volatile organic compounds, characterized by the addition of a desorption gas treatment step The method according to any one of claims 1 to 6, further comprising: in the UV (or visible light) / photocatalytic reaction step ;
Odor or volatile organic, characterized in that the outer diameter of the VIS-photocatalytic reactor utilizing the VIS- light source is made of transparent glass, plastic or equivalent transparent material so that external visible or solar light reaches the VIS-photocatalytic reactor Devices for treating atmospheric or waste gases containing compounds The combustion apparatus of claim 3, wherein each of the combustion apparatus and the desorption VOC combustion apparatus comprises: a condenser including a heat exchanger for condensing volatile organic compounds having a boiling point of 100 ° C. or more;
A device for treating air or waste gas containing odor or volatile organic compounds, characterized in that a separator comprising a moisture trap for condensing water vapor with water to separate volatile organic compounds having a boiling point of 100 ° C. or less is installed.

Images