CN111135685A - Novel deodorization process for high-standard control of odor of sewage plant - Google Patents

Novel deodorization process for high-standard control of odor of sewage plant Download PDF

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CN111135685A
CN111135685A CN202010035554.0A CN202010035554A CN111135685A CN 111135685 A CN111135685 A CN 111135685A CN 202010035554 A CN202010035554 A CN 202010035554A CN 111135685 A CN111135685 A CN 111135685A
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odor
process according
deodorization process
sulfide
ammonia
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王宏杰
董文艺
徐金宝
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Shenzhen Graduate School Harbin Institute of Technology
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Shenzhen Graduate School Harbin Institute of Technology
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/84—Biological processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/52—Hydrogen sulfide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen compounds
    • B01D53/58—Ammonia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8603—Removing sulfur compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8603—Removing sulfur compounds
    • B01D53/8612—Hydrogen sulfide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8634—Ammonia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/10—Single element gases other than halogens
    • B01D2257/106—Ozone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/30—Sulfur compounds
    • B01D2257/306—Organic sulfur compounds, e.g. mercaptans
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
    • B01D2259/804—UV light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/007—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by irradiation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Environmental & Geological Engineering (AREA)
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  • Treating Waste Gases (AREA)
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Abstract

The invention belongs to the technical field of sewage treatment, and particularly provides a novel deodorization process for high-standard control of sewage plant odor, which adopts a combined process of 'biotrickling filtration-vacuum ultraviolet/catalysis' to realize efficient removal of low-concentration hydrogen sulfide, ammonia, methyl mercaptan and methyl sulfide in sewage plant odor. The method has the advantages of simple process and low cost, and is beneficial to industrial application.

Description

Novel deodorization process for high-standard control of odor of sewage plant
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly provides a novel deodorization process for high-standard control of odor in a sewage plant.
Background
Currently, odor control of urban sewage plants implements pollutant discharge standards of urban sewage treatment plants, and the main odor-causing pollutants are hydrogen sulfide and ammonia. Generally, hydrogen sulfide and ammonia can be effectively removed by using a bio-trickling filter, but methyl mercaptan and methyl sulfide which have low concentration and strong odor causing intensity in odor are difficult to remove, so that the overall deodorization effect is poor. Although methyl mercaptan and methyl sulfide have been included in emission standards for malodorous pollutants, they have not been included in odor control standards for sewage plants. In recent years, the introduction of a methyl mercaptan index into odor control standards of local sewage plants has begun in cities such as Shanghai and Tianjin. In the future, the control index of the odor of the sewage plant gradually changes from two pollutants of hydrogen sulfide and ammonia to a plurality of pollutants of hydrogen sulfide, ammonia, methyl mercaptan, methyl sulfide and the like.
The current situation of deodorization is as follows: aiming at the odor generated by urban sewage treatment plants, the treatment is mainly carried out by adopting a biological trickling filter at present. The method has the advantages of high treatment efficiency, stable effect, no secondary pollution, low operation cost and the like when the bio-trickling filter is used for treating the hydrogen sulfide and the ammonia in the odor, but has lower degradation efficiency on the methyl mercaptan and the methyl sulfide with poor water solubility, generally needs longer retention time and is still difficult to reach the standard.
For example, in the prior art CN201920200815.2, the process described in this patent is a combined process of bio-trickling filtration and ultraviolet oxidation, and the process described in this patent is a combined process of bio-trickling filtration and ultraviolet/catalytic oxidation, and a catalytic oxidation stage is added, so that on one hand, the removal rate of pollutants is improved, and on the other hand, O inevitably generated in the ultraviolet oxidation treatment process is increased3And (5) controlling.
And prior art CN201820232337.9, the process described in this patent is a combined process of bio-trickling filtration, photocatalysis and bio-filtration, which is the same as the difference of this patent, i.e. lacks a catalytic oxidation process. The existing defects are as follows: 1) the process flow is too complex. Generally, the odor treatment of sewage plants is very little, and a combination of bio-trickling filtration and bio-filtration is used, so that the occupied area and the construction cost are too high.
In addition, the treatment objects of the two prior art patents do not address sewage plant odors, but in fact the odor components of different pollution sources vary widely. The patent determines the main components of the odor of the sewage plant through literature research and field investigation: the hydrogen sulfide, ammonia, methyl mercaptan and methyl sulfide are used as treatment objects, and small-test operation parameters and treatment effects of the biotrickling filter-vacuum ultraviolet/catalysis process are obtained in a laboratory, so that guidance can be provided for high-standard control of sewage plant odor.
In order to solve the defects of the existing biological trickling filter in the treatment of odor in a sewage plant, the invention provides a 'biological trickling filter-vacuum ultraviolet/catalysis' high-efficiency deodorization process which is used for synchronously and efficiently treating four odor pollutants (two pollutants are increased compared with the existing standard) of hydrogen sulfide, ammonia, methyl mercaptan and methyl sulfide. And laboratory research proves the high deodorization efficiency and the technical economy of the process.
Disclosure of Invention
In view of the problems in the prior art, the invention provides a novel deodorization process for sewage plant odor high-standard control.
The invention is realized by the following technical scheme:
a novel deodorization process for sewage plant odor high-standard control comprises the following steps:
firstly, the odor is sucked to a pretreatment water washing system through an induced duct, and dust, impurity particles and the like in the odor are removed;
then removing low-concentration pollutants such as hydrogen sulfide, ammonia, methyl mercaptan, methyl sulfide and the like through a biological trickling filter unit and a vacuum ultraviolet/catalytic unit of a combined process in sequence;
and finally, residual ozone is removed through an ozone destruction device and an anion generator, and negative ions are supplemented and then discharged into the environment.
As a preferred technical scheme of the invention, the preferred process parameters of the front-stage bio-trickling filtration unit are as follows: the pH value of the nutrient solution is 7.85-8.45, and the nutrient solution comprises 0.4g of ammonium chloride, 0.4g of monopotassium phosphate, 0.4g of sodium bicarbonate, 0.5g of magnesium sulfate and 0.02g of ferrous sulfate per liter.
As a preferred technical scheme of the invention, the spraying density of the preferred nutrient solution is 2.83m3/(m2H) the system temperature was 25 ℃ and the empty bed residence time EBRT was 7 s.
As a preferred technical scheme of the invention, the preferred technological parameters of the vacuum ultraviolet/catalytic unit are as follows: the light intensity is 0.02W/cm3Wavelength of the light mainly185nm, relative humidity of 80-90%, material filling amount of 5%, and empty bed retention time EBRT of 6 s; the filled catalyst material is MnO2The filling amount of the filling material is 5 percent (volume ratio).
As a preferable embodiment of the present invention, MnO is preferably selected2Preparation parameters of the ACF catalytic material: the concentration of the manganese nitrate solution is 0.16mol/L, the dipping time of the activated carbon fiber ACF is 2h, the drying temperature is 105 ℃, the drying time is 4h, the roasting temperature is 300 ℃, and the roasting time is 2 h.
The beneficial effects of the invention compared with the prior art comprise:
through the research, the invention provides a 'biotrickling filter-vacuum ultraviolet/catalysis' combined process capable of efficiently removing hydrogen sulfide, ammonia, methyl mercaptan and dimethyl sulfide in the odor of the sewage plant so as to realize high-standard control of the odor of the sewage plant. The front section of the combined process adopts a biological trickling filtration process, hydrogen sulfide and ammonia are quickly absorbed by utilizing spray liquid, and then pollutants in water are removed through the high-efficiency degradation capability of microorganisms, so that the low-cost effective control of the hydrogen sulfide and the ammonia is realized; the back section adopts a vacuum ultraviolet/catalysis process, and utilizes high-energy photons, ozone, O & OH & generated by vacuum ultraviolet to realize the high-efficiency removal of the methyl mercaptan and the methyl sulfide. The method has the advantages of simple process and low cost, and is beneficial to industrial application.
Drawings
FIG. 1 is a flow chart of a novel deodorization process for sewage treatment plant with high standard odor control according to the present invention;
FIG. 2 is a schematic illustration of the effect of pH on hydrogen sulfide, ammonia, methyl mercaptan and dimethyl sulfide;
FIG. 3 is a schematic illustration of the effect of nutrient spray density on hydrogen sulfide, ammonia, methyl mercaptan and dimethyl sulfide;
FIG. 4 is a schematic illustration of the effect of system temperature of a bio-trickling filter on hydrogen sulfide, ammonia, methyl mercaptan and methyl sulfide;
FIG. 5 is a graph showing the effect of EBRT parameters on hydrogen sulfide, ammonia, methyl mercaptan and dimethyl sulfide.
FIG. 6, incorporating MnO2Effect of ACF Material on contaminant removal Rate for ultraviolet Oxidation ProcessSchematic representation.
FIG. 7, incorporating MnO2The effect of ACF material on ozone generated during the treatment of ultraviolet oxidation process is shown schematically.
FIG. 8 is a graph comparing the removal of hydrogen sulfide, ammonia, methyl mercaptan and methyl sulfide by the vacuum UV/catalytic process of the present invention and the bio-trickling filtration process.
Detailed Description
The present invention and its effective technical effects will be described in further detail below with reference to examples and drawings, but the embodiments of the present invention are not limited thereto.
Example 1
See the combined process flow diagram of fig. 1. The range enclosed by the thick solid line in the figure is the 'bio-trickling filter-vacuum ultraviolet/catalysis' high-efficiency deodorization process provided by the invention, and the range enclosed by the thin dotted line is the traditional single bio-trickling filter tower. The location of the installation of the combined process in a sewage plant deodorization system can be seen in fig. 1.
The treatment process of the process comprises the following steps:
the odor is sucked to a pretreatment water washing system under negative pressure through an induced duct, dust, impurity particles and the like in the pretreatment water washing system are removed, then low-concentration pollutants such as hydrogen sulfide, ammonia, methyl mercaptan, methyl sulfide and the like are removed through a bio-trickling filter unit and a vacuum ultraviolet/catalytic unit of a combined process in sequence, and finally residual ozone is removed through an ozone destruction device and an anion generator, and negative ions are supplemented and then discharged into the environment.
The technological parameters comprise: the process parameters of the front-stage bio-trickling filtration unit are as follows: the nutrient solution comprises 0.4g of ammonium chloride, 0.4g of monopotassium phosphate, 0.4g of sodium bicarbonate, 0.5g of magnesium sulfate and 0.02g of ferrous sulfate per liter, the pH value of the nutrient solution is 7.85-8.45, and the spray density of the nutrient solution is 2.83m3/(m2H), the system temperature is 25 ℃ and the EBRT is 7 s; the technological parameters of the vacuum ultraviolet/catalytic unit are as follows: the light intensity is 0.02W/cm3The wavelength is mainly 185nm, the relative humidity is 80-90%, the material filling amount is 5%, and the EBRT is 6 s; MnO2Preparation parameters of the ACF catalytic material: the concentration of the manganese nitrate solution is 0.16mol/L, the dipping time of the activated carbon fiber ACF is 2h, and the drying temperature is 105 DEG CThe drying time is 4h, the roasting temperature is 300 ℃, and the roasting time is 2 h.
Designing intake concentration and emission standard:
TABLE 1 design inlet air concentration and emission standard
Unit: (mg/m)3)
Figure BDA0002365862560000041
The emission standard is a first-grade standard value of related pollutants in pollutant emission standards of urban sewage treatment plants and emission standards of malodorous pollutants.
Removal contribution rate of each segment unit: in the combined process, the biological trickling filter unit is a main removal unit of hydrogen sulfide and ammonia, and the removal rates of the two units respectively account for 91.4 percent and 93.6 percent of the removal rate of the combined process; and the vacuum ultraviolet/catalytic unit is a main removing unit of methyl mercaptan and dimethyl sulfide, and the removing rate of the methyl mercaptan and the methyl sulfide respectively accounts for 53.1 percent and 75.1 percent of the removing rate of the combined process.
The technical economy is as follows: the technical economics of the combined process were compared to the high capacity single bio-trickling filter as shown in table 2. As can be seen from Table 2, when a single large capacity biotrickling filter is used to treat hydrogen sulfide, ammonia, methyl mercaptan and methyl sulfide, the construction cost and the operation cost of the process are 159 ten thousand yuan/(ten thousand m)3H), 2.77 yuan/1000 m3When the biological trickling filtration-vacuum ultraviolet/catalysis process is adopted for treatment, the construction cost and the operation cost of the process are both lower and are only 50 ten thousand yuan/(ten thousand m)3H), 2.57 yuan/1000 m3. Compared with a single high-capacity biotrickling filter, the construction cost of the combined process is reduced by 70 percent, and the operation cost is reduced by 7 percent.
TABLE 2 technical economic results of combined process and high capacity single biotrickling filter
Figure BDA0002365862560000042
Comparative examples
(1) 4 parameters of the biotrickling filter are optimized: nutrient solution pH, nutrient solution spray density, temperature and EBRT
Experimental design pollutant concentration adopts an intermediate level value within the odor concentration range of domestic sewage treatment plants, namely hydrogen sulfide 30mg/m3Ammonia 20mg/m3Methyl mercaptan 1mg/m3Dimethyl sulfide 2mg/m3。
Referring to fig. 2, the preferable pH range of the nutrient solution is 7.85 to 8.45.
Referring to FIG. 3, the preferred nutrient spray density of the nutrient solution was selected to be 3.15m3/(m2·h)。
Referring to fig. 4, the system temperature of the nutrient solution is selected to be 25 ℃.
Referring to fig. 5, EBRT at which the outlet concentration of four contaminants reaches the first-order standard value is 15s of hydrogen sulfide, 8s of ammonia, 25s of methyl mercaptan and 50s of methyl sulfide, respectively.
(2) Introduction of MnO in vacuum ultraviolet/catalytic section2Promotion of ACF-catalyzed Oxidation of materials
When the methyl mercaptan is 10mg/m315mg/m of dimethyl sulfide3When the material loading is 5% and EBRT is 3s, MnO is introduced as shown in FIG. 62The ACF material can effectively improve the pollutant removal rate of the ultraviolet oxidation process.
As shown in FIG. 7, MnO was introduced2The ACF material can further control the ozone inevitably generated during the treatment of the ultraviolet oxidation process.
(3) Main parameters and treatment efficiency of bio-trickling filter-vacuum ultraviolet/catalysis combined process
1) Principal parameters
The process parameters of the front-stage bio-trickling filtration unit are as follows: the pH value of the nutrient solution is 7.85-8.45, and the spraying density of the nutrient solution is 2.83m3/(m2H), the system temperature is 25 ℃ and the EBRT is 7 s; the technological parameters of the vacuum ultraviolet/catalytic unit are as follows: the light intensity is 0.02W/cm3The wavelength is mainly 185nm, the relative humidity is 80-90%, the material filling amount is 5%, and the EBRT is 6 s; MnO2Preparation parameters of the ACF catalytic material: the concentration of the manganese nitrate solution is 0.16mol/L, the dipping time is 2 hours, the drying temperature is 105 ℃, the drying time is 4 hours, the roasting temperature is 300 ℃, and roasting is carried outAnd the time is 2 h.
2) Effect of each section unit
Referring to fig. 8, the bio-trickling filter unit is a main removal unit for hydrogen sulfide and ammonia, and the removal rates of the two respectively account for 91.4% and 93.6% of the removal rate of the combined process; and the vacuum ultraviolet/catalytic unit is a main removing unit of methyl mercaptan and dimethyl sulfide, and the removing rate of the methyl mercaptan and the methyl sulfide respectively accounts for 53.1 percent and 75.1 percent of the removing rate of the combined process.
3) Compared with the technical economy of a single biological trickling filter
TABLE 3 technical economic results of combined process and high capacity single biotrickling filter
Figure BDA0002365862560000051
When a large-capacity single biological trickling filter is adopted to treat hydrogen sulfide, ammonia, methyl mercaptan and dimethyl sulfide, the construction cost and the operation cost of the process are 159 ten thousand yuan/(ten thousand m) respectively3H), 2.77 yuan/1000 m3When the biological trickling filtration-vacuum ultraviolet/catalysis process is adopted for treatment, the construction cost and the operation cost of the process are both lower and are only 50 ten thousand yuan/(ten thousand m)3H), 2.57 yuan/1000 m3. Compared with a single high-capacity biotrickling filter, the construction cost of the combined process is reduced by 70 percent, and the operation cost is reduced by 7 percent.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (8)

1. A novel deodorization process for sewage plant odor high-standard control is characterized by comprising the following steps:
firstly, the odor is sucked to a pretreatment water washing system through an induced duct, and dust, impurity particles and the like in the odor are removed;
then removing low-concentration pollutants such as hydrogen sulfide, ammonia, methyl mercaptan, methyl sulfide and the like through a biological trickling filter unit and a vacuum ultraviolet/catalytic unit of a combined process in sequence;
and finally, residual ozone is removed through an ozone destruction device and an anion generator, and negative ions are supplemented and then discharged into the environment.
2. The deodorization process as claimed in claim 1, wherein the process parameters of the front-stage bio-trickling filter unit are: the pH value of the nutrient solution is 7.85-8.45, and the nutrient solution comprises 0.4g of ammonium chloride, 0.4g of monopotassium phosphate, 0.4g of sodium bicarbonate, 0.5g of magnesium sulfate and 0.02g of ferrous sulfate per liter.
3. Deodorization process according to claim 2, characterized in that the nutrient solution spray density is 2.83m3/(m2·h)。
4. The deodorization process according to claim 2, wherein the system temperature is 25 ℃.
5. Deodorization process according to claim 2, characterized in that the empty bed residence time EBRT is 7 s.
6. Deodorizing process according to claim 1 or 2, characterized in that the process parameters of the preferably vacuum uv/catalytic unit are: the light intensity is 0.02W/cm3The wavelength is mainly 185 nm.
7. Deodorization process according to claim 6, characterized in that the relative humidity is 80-90% and the empty bed residence time EBRT is 6 s; the filled catalyst material is MnO2The filling amount of the filling material is 5 percent (volume ratio).
8. Process according to claim 6, characterized in that MnO is used2Preparation parameters of the ACF catalytic material: the concentration of the manganese nitrate solution is 0.16mol/L, the dipping time of the active carbon fiber ACF is 2h,the drying temperature is 105 ℃, the drying time is 4 hours, the roasting temperature is 300 ℃, and the roasting time is 2 hours.
CN202010035554.0A 2020-01-14 2020-01-14 Novel deodorization process for high-standard control of odor of sewage plant Pending CN111135685A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101469895A (en) * 2007-12-28 2009-07-01 海斯博特（北京）科技有限公司 Simple multifunctional indoor air purifier
CN101650057A (en) * 2009-05-07 2010-02-17 上海奥奔环境科技工程有限公司 Dust and bacteria removing system
CN102139184A (en) * 2010-01-20 2011-08-03 新奥科技发展有限公司 Gas purification device
CN108704636A (en) * 2018-06-05 2018-10-26 天津大学 A kind of preparation method of the ACF catalyst of the carrying transition metal oxide of room temperature degradation VOCs
CN110252127A (en) * 2019-07-16 2019-09-20 南京科盛环保技术有限公司 A kind of petrochemical industry exhaust treatment system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101469895A (en) * 2007-12-28 2009-07-01 海斯博特（北京）科技有限公司 Simple multifunctional indoor air purifier
CN101650057A (en) * 2009-05-07 2010-02-17 上海奥奔环境科技工程有限公司 Dust and bacteria removing system
CN102139184A (en) * 2010-01-20 2011-08-03 新奥科技发展有限公司 Gas purification device
CN108704636A (en) * 2018-06-05 2018-10-26 天津大学 A kind of preparation method of the ACF catalyst of the carrying transition metal oxide of room temperature degradation VOCs
CN110252127A (en) * 2019-07-16 2019-09-20 南京科盛环保技术有限公司 A kind of petrochemical industry exhaust treatment system

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