CN113134293A - Pollutant treatment system - Google Patents

Pollutant treatment system Download PDF

Info

Publication number
CN113134293A
CN113134293A CN202010061444.1A CN202010061444A CN113134293A CN 113134293 A CN113134293 A CN 113134293A CN 202010061444 A CN202010061444 A CN 202010061444A CN 113134293 A CN113134293 A CN 113134293A
Authority
CN
China
Prior art keywords
chlorine dioxide
dioxide gas
medicament
concentration
controller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010061444.1A
Other languages
Chinese (zh)
Inventor
卢祐增
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Higee Co ltd
Original Assignee
Higee Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Higee Co ltd filed Critical Higee Co ltd
Priority to CN202010061444.1A priority Critical patent/CN113134293A/en
Publication of CN113134293A publication Critical patent/CN113134293A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • B01D53/76—Gas phase processes, e.g. by using aerosols
    • 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
    • B01D53/346—Controlling the process
    • 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
    • B01D53/38—Removing components of undefined structure
    • B01D53/44—Organic components
    • 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
    • B01D53/56—Nitrogen oxides
    • 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
    • B01D53/75—Multi-step 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • 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
    • C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
    • 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
    • C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • C02F1/763—Devices for the addition of such compounds in gaseous form
    • 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
    • B01D2257/302—Sulfur oxides
    • 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
    • B01D2257/304—Hydrogen sulfide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/50—Carbon oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/708—Volatile organic compounds V.O.C.'s
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases
    • 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
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C02F2101/18—Cyanides
    • 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
    • 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
    • C02F2101/40—Organic compounds containing sulfur

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Treating Waste Gases (AREA)

Abstract

A pollutant treatment system, wherein a medicament providing device is controlled by a controller to provide medicament to a chlorine dioxide gas generating device, so that chlorine dioxide gas is generated by the medicament and is output to pollutant treatment equipment, the pollutant treatment equipment removes pollutants in emission by using the chlorine dioxide gas, and then the treated emission is discharged; and wherein a detector detects a physical quantity associated with the agent in the system and provides the physical quantity to the controller, and the controller generates a control signal based on the physical quantity to control the agent providing device to adjust an amount of the agent provided to the chlorine dioxide gas generating device such that the concentration of the pollutant in the treated effluent is maintained at a predetermined value. Therefore, the using amount of the medicament is effectively controlled, and the using cost of the medicament is saved.

Description

Pollutant treatment system
Technical Field
The present invention relates to a pollutant treating apparatus, and more particularly to a pollutant treating system for an emission containing pollutants.
Background
Emissions emitted through a flue (flue), such as pollutants including Nitrogen Oxide (NOX), Carbon Oxide (COX), Sulfur Oxide (SOX), suspended Particles (PM) and moisture, are generally contained in combustion exhaust (i.e. flue exhaust), and if the emissions are directly discharged into the air, the emissions have serious adverse effects on the environment and living bodies, so the emissions need to be properly treated to reduce the pollutant content in the flue exhaust. In addition, organic solvents are commonly used in many industrial processes, and the emissions from such processes, such as process exhaust or wastewater, often contain Volatile Organic Compounds (VOCs) that, if not properly treated, can cause a reduction in the quality of the air or water.
Thus, for the treatment of emissions, such as exhaust gases, containing nitrogen oxides or pollutants containing volatile organic compounds, one approach has been to use strong oxidants (such as ozone gas) to oxidize the pollutants, followed by washing with water to remove them. For example, nitrogen monoxide (NO), which is a majority of nitrogen oxides in combustion exhaust gas, is oxidized to nitrogen dioxide by a chemical reaction as described below.
NO+O3→NO2+O2
However, the molar dose of ozone required for oxidation is at least twice that of nitric oxide, and ozone needs to be produced by high-voltage discharge or ultraviolet irradiation, so that the cost required for treating a large amount of exhaust gas is relatively high in industry. In addition, ozone itself is a pollutant which is irritating to human body, and it is destructive to equipment and tools made of alloy, plastic, rubber and other materials, and easily causes problems such as damage to equipment (for example, breakage of pipelines) and leakage.
Disclosure of Invention
The present invention has been made to solve at least the above problems, and an object of the present invention is to provide a pollutant treating system capable of appropriately saving the amount of chemicals used for treating pollutants in exhaust.
The invention relates to a pollutant treatment system, which comprises a chlorine dioxide gas generating device, a pollutant treatment device, a controller, a medicament providing device and a detector, wherein the chlorine dioxide gas generating device is connected with the pollutant treatment device; wherein the pollutant treatment equipment is connected with the chlorine dioxide gas generation device and receives the input of an emission containing pollutants; the agent providing device is connected with the chlorine dioxide gas generating device and is controlled by the controller to provide an agent for the chlorine dioxide gas generating device, so that the chlorine dioxide gas generating device generates chlorine dioxide gas by using the agent and outputs the chlorine dioxide gas to the pollutant treating equipment, and the pollutant treating equipment outputs treated emissions after treating pollutants in the emissions containing pollutants by using the chlorine dioxide gas; the detector is electrically coupled with the controller, detects a physical quantity related to the medicament in the system, and transmits the physical quantity to the controller, and the controller generates a control signal to the medicament providing device according to the physical quantity, so that the medicament providing device adjusts the medicament quantity of the medicament provided for the chlorine dioxide gas generating device according to the control signal, and the concentration of the pollutant in the treated effluent is maintained at a preset value.
In some embodiments of the invention, the chlorine dioxide gas generating device is a supergravity device, and the pollutant treating apparatus comprises an oxidation device connected to the supergravity device and an absorption device connected to the oxidation device; the emission containing pollutants is a waste gas, the pollutants in the waste gas comprise nitrogen oxides, the oxidation device receives the input of the waste gas containing pollutants, the chlorine dioxide gas input by the supergravity device is used for oxidizing the nitrogen oxides in the waste gas to generate a pretreatment gas containing nitrogen dioxide, the pretreatment gas and an alkali liquor are respectively input into the absorption device, the nitrogen dioxide in the pretreatment gas and the alkali liquor are subjected to chemical reaction in the absorption device to absorb the nitrogen oxides in the waste gas, and then the absorption device outputs the treated waste gas; and the detector is a pollutant detector which detects a concentration of nitrogen oxides in the treated exhaust gas and transmits the concentration of nitrogen oxides to the controller, and the controller generates the corresponding control signal to the chemical supply device according to a difference value between the concentration of nitrogen oxides and the preset value, wherein the concentration of nitrogen oxides is the physical quantity.
In some embodiments of the invention, the chlorine dioxide gas generating device is a supergravity device, and the pollutant treating apparatus comprises an oxidation device connected to the supergravity device and an absorption device connected to the oxidation device; the emission containing the pollutants is an exhaust gas, the pollutants in the exhaust gas comprise volatile substances, the oxidizing device oxidizes the volatile substances in the exhaust gas by using chlorine dioxide gas input by the supergravity device to generate a pretreatment gas containing the pollutants of oxidized organic products, the pretreatment gas and water are input into the absorbing device, the oxidized organic products in the pretreatment gas are dissolved in water to absorb the volatile substances in the exhaust gas, the absorbing device outputs the treated exhaust gas, the detector is a pollutant detector which detects a concentration of the volatile substances in the treated exhaust gas and transmits the concentration of the volatile substances to the controller, and the controller generates the corresponding control signal to the medicament providing device according to a difference value between the concentration of the volatile substances and a preset value, wherein said concentration of volatile substances is said physical quantity.
In some embodiments of the invention, the chlorine dioxide gas generating device is a supergravity device, and the pollutant treating apparatus comprises a dissolving device connected to the supergravity device and a reaction device connected to the dissolving device; the effluent containing pollutants is a wastewater, the pollutants in the wastewater contain oxidizable substances capable of being oxidized by chlorine dioxide, the dissolving device receives the wastewater and chlorine dioxide gas input by the supergravity device, so that the chlorine dioxide gas is dissolved in the wastewater to obtain a pretreatment wastewater containing chlorine dioxide, the pretreatment wastewater is input into the reaction device, and the reaction device enables the chlorine dioxide dissolved in the pretreatment wastewater to oxidize the oxidizable substances in the pretreatment wastewater and then outputs the treated wastewater; and the detector is a pollutant detector which detects a concentration of oxidizable substances in the treated wastewater and transmits the concentration of oxidizable substances to the controller, and the controller generates the corresponding control signal to the chemical supply device according to a difference between the concentration of oxidizable substances and the preset value, wherein the concentration of oxidizable substances is the physical quantity.
In some embodiments of the invention, the chlorine dioxide gas generating device is a supergravity device, and the pollutant treating apparatus comprises a dissolving device connected to the supergravity device and a reaction device connected to the dissolving device; the effluent containing pollutants is wastewater, the pollutants in the wastewater contain volatile substances, the dissolving device receives the wastewater and chlorine dioxide gas input by the supergravity device, so that the chlorine dioxide gas is dissolved in the wastewater to obtain pre-treatment wastewater containing chlorine dioxide, the pre-treatment wastewater is input into the reaction device, the reaction device oxidizes the volatile substances in the pre-treatment wastewater by the chlorine dioxide dissolved in the pre-treatment wastewater and outputs the treated wastewater, the detector is a pollutant detector which detects the concentration of the volatile substances in the treated wastewater and transmits the concentration of the volatile substances to the controller, and the controller generates corresponding control signals to the medicament providing device according to the difference between the concentration of the volatile substances and the preset value, wherein said concentration of volatile substances is said physical quantity.
In some embodiments of the invention, the pharmaceutical agent comprises at least two reactive liquids that are sufficiently mixed to react and pass through a gas-liquid phase in the chlorine dioxide gas generating device to generate chlorine dioxide gas.
In some embodiments of the present invention, when the difference obtained by subtracting the preset value from the physical quantity is a positive value, the control signal controls the chemical providing device to increase the amount of the chemical provided to the chlorine dioxide gas generating device; when the difference value obtained by subtracting the preset value from the physical quantity is a negative value, the control signal controls the medicament providing device to reduce the medicament quantity of the medicament provided for the chlorine dioxide gas generating device.
In some embodiments of the present invention, the chlorine dioxide gas generating device is connected to the pollutant treating apparatus by a first pipeline, and the detector is a chlorine dioxide concentration detector disposed on the first pipeline, and is configured to detect a concentration of chlorine dioxide gas output from the chlorine dioxide gas generating device to the oxidizing device, and provide the concentration of chlorine dioxide gas to the controller, and the controller controls the chemical providing device to maintain the chemical amount of the chemical agent provided to the chlorine dioxide gas generating device when the controller determines that the concentration of chlorine dioxide gas has reached the preset value, and the concentration of chlorine dioxide gas is the physical amount; wherein when the controller determines that the concentration of chlorine dioxide gas is below a first threshold, the controller causes the control signal to control the medicament providing device to increase the amount of the medicament provided to the chlorine dioxide gas generating device; when the controller judges that the concentration of the chlorine dioxide gas is higher than a second critical value, the controller controls the medicament providing device to reduce the medicament amount of the medicament provided for the chlorine dioxide gas generating device by the control signal.
In some embodiments of the present invention, the chlorine dioxide gas generating device is connected to the pollutant treating apparatus by a first pipeline, the detector is a chlorine dioxide concentration detector disposed on the first pipeline, the detector detects a concentration of chlorine dioxide gas output from the chlorine dioxide gas generating device to the pollutant treating apparatus and provides the concentration of chlorine dioxide gas to the controller, the pollutant treating system further comprises an air pipeline for introducing air into the chlorine dioxide gas generating device and a gas flow meter disposed in the air pipeline and electrically connected to the controller, the gas flow meter measures a flow rate of chlorine dioxide gas and provides the flow rate to the controller, the controller calculates a production amount of chlorine dioxide gas generated by the chlorine dioxide gas generating device according to the concentration and the flow rate of chlorine dioxide gas, and the controller controls the medicament providing device to maintain the medicament amount of the medicament provided to the chlorine dioxide gas generating device when the controller judges that the yield of the chlorine dioxide gas enables the concentration of pollutants to reach the preset value; wherein when the controller determines that the production of chlorine dioxide gas is below a third threshold, the controller causes the control signal to control the medicament providing device to increase the amount of the medicament provided to the chlorine dioxide gas generating device; when the controller judges that the output of the chlorine dioxide gas is higher than a fourth critical value, the controller controls the medicament providing device to reduce the medicament amount of the medicament provided for the chlorine dioxide gas generating device through the control signal.
In some embodiments of the present invention, the agent providing device and the chlorine dioxide gas generating device are connected by a second pipeline, and the detector is an agent flow meter disposed in the second pipeline, which measures the amount of the agent provided by the agent providing device to the chlorine dioxide gas generating device and provides the amount of the agent to the controller, and the controller controls the agent providing device to maintain the amount of the agent provided to the chlorine dioxide gas generating device when determining that the amount of the agent has reached the predetermined value, and the amount of the agent is the physical amount; when the controller judges that the medicine quantity is lower than a fifth critical value, the control signal controls the medicine providing device to increase the medicine quantity of the medicine provided for the chlorine dioxide gas generating device; and when the controller judges that the medicine amount is higher than a sixth critical value, the controller controls the medicine providing device to reduce the medicine amount of the medicine provided for the chlorine dioxide gas generating device by the control signal.
The invention has the beneficial effects that: the chlorine dioxide gas generated by the chlorine dioxide gas generating device is used for oxidizing pollutants in the discharged waste gas, and the oxidized pollutants in the waste gas are subjected to chemical reaction or dissolution in the absorbing device to effectively absorb the pollutants, so that the pollutants in the waste gas can be efficiently treated by gas-liquid mass transmission, the consumption cost is low, and the chlorine dioxide is not easy to cause the deterioration and damage of equipment materials to avoid the leakage problem; or, the chlorine dioxide gas generated by the chlorine dioxide gas generating device is dissolved in the wastewater (discharge), so as to oxidize pollutants in the wastewater to reduce Chemical Oxygen Demand (COD) or color (color) of the treated wastewater, and the controller monitors the concentration of pollutants in the treated exhaust gas (wastewater) discharged by the pollutant treating equipment and timely generates the control signal according to the concentration of pollutants to control the chemical providing device to adjust the amount of the chemical supplied to the chlorine dioxide gas generating device, so that the yield of the chlorine dioxide gas generated by the chlorine dioxide gas generating device is enough to maintain the concentration of pollutants in the treated exhaust gas (wastewater) at the preset value without generating excessive or over-high concentration of chlorine dioxide gas, can effectively control the dosage of the medicament and save the use cost of the medicament.
Drawings
FIG. 1 is a schematic view of the pollutant treating system according to the first embodiment of the present invention, mainly comprising devices and their connections.
FIG. 2 is a schematic view of the pollutant treating system according to the second embodiment of the present invention, mainly comprising devices and their connections.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Before the present invention is described in detail, it should be noted that in the following description, similar components are denoted by the same reference numerals.
Referring to fig. 1, the first embodiment of the pollutant treating system of the present invention is used for treating the pollutant in the gas emission, such as the exhaust gas (i.e. combustion exhaust gas or flue exhaust gas) discharged through a flue (flue) or the process exhaust gas, and therefore the present embodiment mainly comprises a chlorine dioxide gas generating device 1, a pollutant treating apparatus 2, a controller 3, a chemical providing device 4 and a detector. The chlorine dioxide gas generating apparatus 1 in this embodiment can be, but is not limited to, a supergravity apparatus (first supergravity apparatus) which can sufficiently mix at least two kinds of reactive liquids input therein with air to react and transmit the mixture through gas-liquid medium to generate chlorine dioxide gas, as will be further described below.
The pollutant treating device 2 is connected to the chlorine dioxide gas generating device 1 to receive the input of the waste gas containing pollutants, and to treat the pollutants in the waste gas by using the chlorine dioxide gas generated by the chlorine dioxide gas generating device 1 to remove or reduce the pollutants in the waste gas, and then to output the treated waste gas.
The chemical providing device 4 is connected to the chlorine dioxide gas generating device 1 and controlled by the controller 3 to provide a chemical to the chlorine dioxide gas generating device 1, so that the chlorine dioxide gas generating device 1 generates chlorine dioxide gas using the chemical to output the chlorine dioxide gas to the pollutant treating device 2.
The detector is electrically coupled to the controller 3 and detects a physical quantity related to the chemical in the system, and transmits the physical quantity to the controller 3, so that the controller 3 can generate a control signal to the chemical supply device 4 according to the physical quantity, and the chemical supply device 4 adjusts a dosage of the chemical supplied to the chlorine dioxide gas generation device 1 according to the control signal, so that a concentration of the pollutant in the treated effluent is maintained at a preset value.
In an implementation aspect of the embodiment, the detector is a pollutant detector S1, which detects pollutants in the processed exhaust gas output by the pollutant treating apparatus 2 to obtain a concentration of pollutants, and transmits the concentration of pollutants to the controller 3, wherein the concentration of pollutants is the physical quantity; and the controller 3 generates a corresponding control signal to the chemical providing device 4 according to a difference between the concentration of the pollutants and the preset value, so that the chemical providing device 4 correspondingly adjusts a dosage of the chemical provided to the chlorine dioxide gas generating device 1 according to the control signal, and continuously controls the chemical providing device 4 timely and in a feedback manner according to the change of the difference to adjust the dosage, so that the concentration of the pollutants in the treated waste gas is maintained at the preset value.
Specifically, in the present embodiment, the pollutant treating device 2 comprises an oxidation device 21 and an absorption device 22, wherein the absorption device 22 can be, but is not limited to, a supergravity device (second supergravity device). The oxidation device 21 is connected to the chlorine dioxide gas generating device 1 via a first pipeline 61 to introduce chlorine dioxide gas and to receive the input of the waste gas containing pollutants. The oxidation device 21 is connected to the absorption device 22 through a gas passage 62, so that a pretreatment gas obtained by treating the waste gas with chlorine dioxide gas in the oxidation device 21 is introduced into the absorption device 22 through the gas passage 62. The absorber 22 further processes the pre-processed gas and then outputs the processed exhaust gas. The following will exemplify the treatment process of the present embodiment for different kinds of exhaust gas.
When the exhaust gas to be treated is a gas containing Nitrogen Oxides (NO)X) And moisture, in order to generate chlorine dioxide gas, in this embodiment, the chemical supply device 4 will include sodium chlorite (NaClO)2) Two reactive liquids, namely, an aqueous solution and hydrochloric acid, are introduced into the chlorine dioxide gas generating device 1, and air is simultaneously introduced into the chlorine dioxide gas generating device 1 through an air pipe 63, so that the reactive liquids are sufficiently mixed in the chlorine dioxide gas generating device 1 to react and are transferred through gas-liquid to generate chlorine dioxide (ClO)2) A gas. Among them, sodium chlorite and hydrochloric acid are chemically reacted as described below to generate chlorine dioxide.
5NaClO2+4HCl→4ClO2+5NaCl+2H2O
In addition, in another embodiment, the medicament providing device 4 may also include sodium chlorite (NaClO)2) Aqueous solution and sodium persulfate (Na)2S2O8) Two reactive liquids of aqueous solution are introduced into the chlorine dioxide gas generator 1, and air is introduced into the chlorine dioxide gas generator 1 through the air pipe 63, so that the two reactive liquids are sufficiently mixed in the chlorine dioxide gas generator 1 to react with each other and are transferred through gas-liquid phase to generate chlorine dioxide (ClO)2) A gas. Among them, sodium chlorite and sodium persulfate are chemically reacted as shown below to generate chlorine dioxide.
2NaClO2+Na2S2O8→2ClO2+2Na2SO4
Then, the chlorine dioxide gas generator 1 supplies the generated chlorine dioxide gas to the oxidation device 21 to oxidize nitrogen oxides in the exhaust gas to obtain a gas containing nitrogen dioxide (NO)2) The pretreatment gas of (1). Among the nitrogen oxides, nitrogen monoxide (NO) is oxidized to nitrogen dioxide by the following chemical reaction.
5NO+2ClO2+H2O→5NO2+2HCl
In addition, if the chlorine dioxide dose is excessive relative to the nitrogen monoxide in the nitrogen oxide, the nitrogen dioxide in the nitrogen oxide may be further oxidized to nitric acid by a chemical reaction with the chlorine dioxide gas as shown below.
5NO2+ClO2+3H2O→5HNO3+HCl
Then, the pretreatment gas and an alkaline solution (which is an aqueous solution containing sodium hydroxide and sodium sulfide) are respectively introduced (input) into the absorption device 22, so that nitrogen dioxide and residual nitric oxide in the pretreatment gas and the alkaline solution undergo the following chemical reactions through gas-liquid mass transfer to remove nitrogen dioxide and residual nitric oxide in the pretreatment gas, and the concentrations of nitrogen dioxide and nitrogen monoxide in the treated exhaust gas output by the absorption device 22 are reduced to a preset value. In the present embodiment, the absorption device 22 (second supergravity device) comprises a rotating packed bed made of stainless steel.
NO2+NO+2NaOH→2NaNO2+H2O
2NO2+2NaOH→NaNO2+NaNO3+H2O
HNO3+NaOH→NaNO3+H2O
In another embodiment of this embodiment, only the aqueous sodium sulfide solution may be used as the alkali solution, and the nitrogen dioxide in the pretreatment gas and the aqueous sodium sulfide solution may be subjected to the following chemical reaction by gas-liquid mass transfer.
2NO2+Na2S→N2+Na2SO4
In another embodiment of this embodiment, an aqueous sodium sulfite solution may be used as the alkali solution, and the nitrogen dioxide in the pretreatment gas and the aqueous sodium sulfite solution may be subjected to the following chemical reaction by gas-liquid mass transfer.
2NO2+4Na2SO3→N2+4Na2SO4
Finally, the alkali solution after the chemical reaction can be recovered and recycled to the absorption device 22 to perform the chemical reaction with the nitrogen dioxide in the pretreatment gas subsequently fed to the absorption device 22.
Further, when the waste gas to be treated is a process waste gas containing Volatile Organic Compounds (VOCs), the oxidation device 21 oxidizes the volatile organic compounds in the process waste gas by using the chlorine dioxide gas generated by the chlorine dioxide gas generation device 1 to obtain a pretreatment gas containing oxidized organic products (contaminants), and the contaminants contained in the process waste gas are dimethyl sulfide (DMS), so that the oxidized organic products are dimethyl sulfoxide (DMSO) which is easily soluble in water.
In addition, if the pollutant contained in the process exhaust gas is Triethylamine (TEA), it is oxidized by chlorine dioxide through a chemical reaction as shown below.
(C2H5)3N+ClO2+H2O→(C2H5)2NH2+HClO2+CH3CHO
Then, the pretreatment gas and water are introduced (fed) into the absorber 22, respectively, so that the oxidized organic products in the pretreatment gas are dissolved in water through gas-liquid mass transfer, and at this time, an excessive amount of unreacted chlorine dioxide gas may be dissolved in water.
Finally, the aqueous solution after the dissolution step may be recovered and recycled to the absorber 22 to dissolve the oxidized organic products in the pretreatment gas subsequently fed to the absorber 22.
Meanwhile, the pollutant detector S1 disposed on the exhaust line 221 of the absorption device 22 detects a concentration of pollutants (such as the above-mentioned nitrogen oxides or volatile organic compounds) in the processed exhaust gas and provides the detected concentration to the controller 3, and when the controller 3 determines that the difference obtained by subtracting the preset value from the concentration of pollutants is a positive value, the control signal generated by the controller 3 controls the chemical supply device 4 to increase the amount of the chemical supplied to the chlorine dioxide gas generation device 1; when the controller 3 determines that the difference obtained by subtracting the preset value from the concentration of the pollutant is a negative value, the control signal generated by the controller 3 controls the chemical supply device 4 to reduce the amount of the chemical supplied to the chlorine dioxide gas generation device 1; for example, the controller 3 transmits a control signal between 4 to 20mA to control the drug providing device 4 to correspondingly change the drug adding rate, i.e. the drug adding rate increases or decreases with the magnitude of the current, but not limited thereto. Therefore, when the controller 3 continuously adjusts the amount of the chemical provided by the chemical providing device 4 to the chlorine dioxide gas generating device 1 in a feedback manner according to the difference, the concentration of the pollutants in the treated exhaust gas can gradually reach and be maintained at the preset value.
In addition, as shown in fig. 1, another implementation aspect of the present embodiment is that the detector is a chlorine dioxide concentration detector S2 disposed on the first pipeline 61 (for example, connected to the first pipeline 61 by a bypass), the chlorine dioxide concentration detector S2 detects a concentration of chlorine dioxide gas output from the chlorine dioxide gas generating device 1 to the oxidizing device 21 and provides the concentration of chlorine dioxide gas to the controller 3, and the controller 3 controls the chemical providing device 4 to maintain (i.e., not increase or decrease) the amount of the chemical provided to the chlorine dioxide gas generating device 1 when determining that the concentration of chlorine dioxide gas has enabled the concentration of pollutants in the treated exhaust gas to reach the predetermined value. Furthermore, when the controller 3 determines that the concentration of the chlorine dioxide gas is lower than a first critical value, the controller correspondingly generates the control signal to control the medicament providing device 4 to increase the amount of the medicament provided to the chlorine dioxide gas generating device 1; and when the controller 3 determines that the concentration of the chlorine dioxide gas is higher than a second critical value, the controller correspondingly generates the control signal to control the medicament providing device 4 to reduce the medicament amount of the medicament provided to the chlorine dioxide gas generating device 1.
In another embodiment, as shown in fig. 1, a gas flow meter M1 electrically connected to the controller 3 may be disposed in the air pipe 63, and is capable of obtaining a flow rate of chlorine dioxide gas output from the chlorine dioxide gas generator 1 (i.e., chlorine dioxide gas is pushed out from the chlorine dioxide gas generator 1 by introducing air, so that the flow rate of air flowing into the air pipe 63 is equivalent to the flow rate of chlorine dioxide gas) by measuring the flow rate of air flowing into the air pipe 63, and providing the flow rate of chlorine dioxide gas to the controller 3. And the flow rate of air entering the air duct 63 may be controlled by an air flow regulating valve 64 provided at the inlet of the air duct 63. Then, the controller 3 calculates a production amount of the chlorine dioxide gas generated by the chlorine dioxide gas generation device 1 based on the concentration and the flow rate of the chlorine dioxide gas, and controls the chemical supply device 4 to maintain the amount of the chemical supplied to the chlorine dioxide gas generation device 1 when the controller 3 determines that the production amount of the chlorine dioxide gas has reached the predetermined value of the concentration of the pollutant in the treated exhaust gas. In addition, when the controller 3 determines that the output of chlorine dioxide gas is lower than a third threshold value, the controller generates the control signal to control the chemical providing device 4 to increase the amount of the chemical provided to the chlorine dioxide gas generating device 1; and when the controller 3 determines that the output of the chlorine dioxide gas is higher than a fourth critical value, the controller correspondingly generates the control signal to control the medicament providing device 4 to reduce the medicament amount of the medicament provided to the chlorine dioxide gas generating device 1.
In addition, as shown in fig. 1, in another aspect of the present embodiment, the chemical providing device 4 and the chlorine dioxide gas generating device 1 are connected by a second pipeline 65, and the detector is a chemical flow meter M2 disposed on the second pipeline 65, which measures the amount of the chemical (actually, the amounts of the two reactive liquids) supplied from the chemical supply device 4 to the chlorine dioxide gas generation device 1, and supplies the amount to the controller 3, wherein the dosage is the physical quantity, and when the controller 3 judges that the dosage enables the concentration of pollutants in the treated waste gas to reach the preset value, controlling the chemical supply device 4 to maintain the amount of the chemical supplied to the chlorine dioxide gas generation device 1; when the controller 3 determines that the amount of the medicament is lower than a fifth critical value, the controller correspondingly generates the control signal to control the medicament providing device 4 to increase the amount of the medicament provided to the chlorine dioxide gas generating device 1; and when the controller 3 determines that the amount of the chemical is higher than a sixth threshold value, the controller correspondingly generates the control signal to control the chemical providing device 4 to reduce the amount of the chemical provided to the chlorine dioxide gas generating device 1.
It is to be noted that, as will be understood from the above description, the pollutants in the exhaust gas may be other than the nitrogen oxides or volatile organic substances, such as hydrogen sulfide (H)2S) or a gaseous pollutant such as odor, and the gaseous pollutants in the exhaust gas can be effectively removed by the pollutant treating system of the above embodiment.
Referring again to fig. 2, a second embodiment of the pollutant treating system of the present invention is shown, and the present embodiment is mainly used for treating liquid emissions containing pollutants, such as wastewater containing pollutants including oxidizable compounds or volatile organic compounds. Therefore, the present embodiment is mainly different from the first embodiment in that the pollutant treating apparatus 2 'includes a dissolving device 21' connected to the chlorine dioxide gas generating device 1 (first supergravity device) through the first pipeline 61 and a reaction device 22 'connected to the dissolving device 21' through the second pipeline 62. Wherein the dissolving device 21' can be, but is not limited to, a supergravity device (second supergravity device). In addition, other devices and components of the present embodiment are the same as those of the first embodiment, and thus are not described herein again.
Whereby, when the wastewater to be treated contains oxidizable compounds, such as Cyanide (CN)－) Organic substances (carbon-containing compounds such as bacteria, odor and chromaticity), the wastewater contains Cyanide (CN)－) For example, the dissolving device 21 ' receives the wastewater and the chlorine dioxide gas input from the chlorine dioxide gas generating device 1, dissolves the chlorine dioxide gas in the wastewater to obtain a pretreatment wastewater containing chlorine dioxide, and inputs the pretreatment wastewater to the reaction device 22 ', and the reaction device 22 ' makes the chlorine dioxide dissolved in the pretreatment wastewater react with Cyanide (CN) in the pretreatment wastewater－) Oxidation reaction was carried out as shown below to produce a Cyanoxide (CNO)－) And outputting the treated wastewater. Thereby reducing the chemical oxygen demand of the treated wastewater. Similarly, the dissolving device 21 'and the reaction device 22' can also be used to oxidize the bacteria, odor, or color contaminants in the wastewater to reduce or eliminate the bacteria, odor, or color contaminants in the treated wastewater.
2ClO2+CN－+2OH－→CNO－+2ClO2 －+H2O
Also in the present embodiment, the pollutant detector S1 detects the concentration of pollutants (i.e., oxidizable compounds) in the treated wastewater.
In addition, in this embodiment, when the pollutant in the wastewater to be treated includes volatile substances, such as dimethyl sulfide (DMS), the dissolving device 21 ' receives the wastewater and the chlorine dioxide gas input from the chlorine dioxide gas generating device 1, so that the chlorine dioxide gas is dissolved in the wastewater to obtain a pre-treatment wastewater containing chlorine dioxide, and inputs the pre-treatment wastewater into the reaction device 22 ', and the reaction device 22 ' causes the chlorine dioxide dissolved in the pre-treatment wastewater to perform an oxidation reaction on the dimethyl sulfide in the pre-treatment wastewater as shown below, so as to generate an oxidized organic product, i.e., dimethyl sulfoxide (DMSO), and outputs the treated wastewater, thereby reducing the chemical oxygen demand of the treated wastewater.
2DMS+2ClO2+H2O→2DMSO+HClO+HClO2
In addition, if the pollutant contained in the wastewater is Triethylamine (TEA), the triethylamine is oxidized by chlorine dioxide dissolved in the wastewater in the reaction apparatus 22' by the following chemical reaction. Thereby, the chemical oxygen demand of the treated wastewater can also be reduced.
(C2H5)3N+2ClO2+H2O→(C2H5)2NH+2HClO2+CH3CHO
In this embodiment, the pollutant detector S1 detects the concentration of pollutants (i.e., volatile organic compounds) in the treated wastewater and provides the detected concentration to the controller 3, and when the controller 3 determines that the difference obtained by subtracting the preset value from the concentration of pollutants is a positive value, the control signal generated by the controller 3 will control the chemical supply device 4 to increase the amount of the chemical supplied to the chlorine dioxide gas generating device 1; when the controller 3 determines that the difference obtained by subtracting the preset value from the concentration of the pollutant is a negative value, the control signal generated by the controller 3 controls the chemical supply device 4 to reduce the amount of the chemical supplied to the chlorine dioxide gas generation device 1; therefore, the controller 3 continuously adjusts the amount of the chemical provided by the chemical providing device 4 to the chlorine dioxide gas generating device 1 in a feedback manner according to the difference value, so that the concentration of the pollutants in the treated wastewater can gradually reach and be maintained at the preset value.
Also, as another implementation of the first embodiment, the present embodiment may also use the chlorine dioxide concentration detector S2 to detect the concentration of chlorine dioxide gas output from the chlorine dioxide gas generating device 1 to the dissolving device 21' and provide the concentration of chlorine dioxide gas to the controller 3, and the controller 3 controls the chemical providing device 4 to maintain (i.e. not increase or decrease) the amount of the chemical provided to the chlorine dioxide gas generating device 1 when determining that the concentration of chlorine dioxide gas has reached the predetermined value.
Alternatively, as in yet another implementation of the first embodiment, the present embodiment may also utilize the gas flow meter M1 to provide the flow rate of chlorine dioxide gas to the controller 3. Then, the controller 3 calculates a production amount of the chlorine dioxide gas generated by the chlorine dioxide gas generation device 1 based on the concentration and the flow rate of the chlorine dioxide gas, and controls the chemical supply device 4 to maintain the chemical amount supplied to the chlorine dioxide gas generation device 1 when the controller 3 determines that the production amount of the chlorine dioxide gas has reached the predetermined value of the concentration of the pollutant in the treated wastewater.
Alternatively, as in the case of the still another embodiment of the first embodiment, in this embodiment, the chemical flow meter M2 may be used to measure the amount of the chemical (actually, the amounts of the two reactive liquids) supplied from the chemical supply device 4 to the chlorine dioxide gas generator 1 and supply the measured amount to the controller 3, and the controller 3 may control the chemical supply device 4 to maintain the amount of the chemical supplied to the chlorine dioxide gas generator 1 when the controller 3 determines that the amount of the chemical has reached the predetermined value of the concentration of the pollutant in the treated wastewater.
As described above, in the above embodiment, the chlorine dioxide gas generated by the chlorine dioxide gas generating device 1 oxidizes the pollutants (such as nitrogen oxides or volatile organic compounds) in the exhaust gas (emissions), and the alkali solution or water is used to perform a chemical reaction or dissolution in the absorption device 22 to effectively absorb the pollutants, so that the nitrogen oxides or volatile organic compounds in the exhaust gas can be efficiently treated through gas-liquid mass transfer, the consumption cost is low, and the chlorine dioxide has good material compatibility with many materials, and the equipment material is less prone to be deteriorated and damaged (such as pipeline breakage), thereby avoiding the leakage problem; alternatively, the chlorine dioxide gas generated by the chlorine dioxide gas generation device 1 is dissolved in the wastewater (discharge) to oxidize pollutants (such as cyanide or organic substances) in the wastewater, so as to reduce the chemical oxygen demand of the treated wastewater; in addition, the above embodiment monitors the concentration of the pollutant in the treated waste gas (waste water) discharged from the pollutant treating device 2 (2') by the controller 3, and timely generates the control signal according to the concentration of the pollutant to control the chemical providing device 4 to adjust the chemical amount provided to the chlorine dioxide gas generating device 1, so that the chlorine dioxide gas generating device 1 can generate the chlorine dioxide gas in an amount just enough to maintain the concentration of the pollutant in the treated waste gas (waste water) at the preset value without generating excessive or over-high concentration chlorine dioxide gas, and the chemical amount can be effectively controlled to save the chemical cost, thereby achieving the efficacy and purpose of the present invention.

Claims (10)

1. A pollutant treating system, comprising:
the pollutant treating system comprises:
a chlorine dioxide gas generating device;
pollutant treatment equipment which is connected with the chlorine dioxide gas generating device and receives the input of an emission containing pollutants;
a controller;
a chemical agent providing device connected to the chlorine dioxide gas generating device and controlled by the controller to provide a chemical agent to the chlorine dioxide gas generating device, so that the chlorine dioxide gas generating device generates chlorine dioxide gas using the chemical agent and outputs the chlorine dioxide gas to the pollutant treating device, and the pollutant treating device processes pollutants in the pollutant-containing emission with the chlorine dioxide gas and then outputs a processed emission; and
the detector is electrically coupled with the controller, detects a physical quantity related to the medicament in the system, transmits the physical quantity to the controller, and generates a control signal to the medicament providing device according to the physical quantity, so that the medicament providing device adjusts the medicament quantity of the medicament provided for the chlorine dioxide gas generating device according to the control signal, and the concentration of the pollutant in the treated discharge is maintained at a preset value.
2. The pollutant treating system of claim 1, wherein: the chlorine dioxide gas generating device is a supergravity device, and the pollutant treating equipment comprises an oxidation device connected with the supergravity device and an absorption device connected with the oxidation device; the emission containing pollutants is a waste gas, the pollutants in the waste gas comprise nitrogen oxides, the oxidation device receives the input of the waste gas containing pollutants, the chlorine dioxide gas input by the supergravity device is used for oxidizing the nitrogen oxides in the waste gas to generate a pretreatment gas containing nitrogen dioxide, the pretreatment gas and an alkali liquor are respectively input into the absorption device, the nitrogen dioxide in the pretreatment gas and the alkali liquor are subjected to chemical reaction in the absorption device to absorb the nitrogen oxides in the waste gas, and then the absorption device outputs the treated waste gas; and the detector is a pollutant detector which detects a concentration of nitrogen oxides in the treated exhaust gas and transmits the concentration of nitrogen oxides to the controller, and the controller generates the corresponding control signal to the chemical supply device according to a difference value between the concentration of nitrogen oxides and the preset value, wherein the concentration of nitrogen oxides is the physical quantity.
3. The pollutant treating system of claim 1, wherein: the chlorine dioxide gas generating device is a supergravity device, and the pollutant treating equipment comprises an oxidation device connected with the supergravity device and an absorption device connected with the oxidation device; the emission containing the pollutants is a waste gas, the pollutants in the waste gas contain volatile substances, the oxidation device oxidizes the volatile substances in the waste gas by using chlorine dioxide gas input by the supergravity device to generate a pretreatment gas containing the pollutants of oxidized organic products, the pretreatment gas and water are input into the absorption device, the oxidized organic products in the pretreatment gas are dissolved in water to absorb the volatile substances in the waste gas, the absorption device outputs the treated waste gas, the detector is a pollutant detector which detects the concentration of the volatile substances in the treated waste gas and transmits the concentration of the volatile substances to the controller, and the controller generates the corresponding control signal to the medicament providing device according to the difference between the concentration of the volatile substances and the preset value, wherein said concentration of volatile substances is said physical quantity.
4. The pollutant treating system of claim 1, wherein: the chlorine dioxide gas generating device is a supergravity device, and the pollutant treating equipment comprises a dissolving device connected with the supergravity device and a reaction device connected with the dissolving device; the effluent containing pollutants is wastewater, the pollutants in the wastewater contain oxidizable substances capable of being oxidized by chlorine dioxide, the dissolving device receives the wastewater and chlorine dioxide gas input by the supergravity device, so that the chlorine dioxide gas is dissolved in the wastewater to obtain pretreated wastewater containing chlorine dioxide, the pretreated wastewater is input into the reaction device, and the chlorine dioxide dissolved in the pretreated wastewater is oxidized by the reaction device to output the treated wastewater; and the detector is a pollutant detector which detects a concentration of oxidizable substances in the treated wastewater and transmits the concentration of oxidizable substances to the controller, and the controller generates the corresponding control signal to the chemical supply device according to a difference between the concentration of oxidizable substances and the preset value, wherein the concentration of oxidizable substances is the physical quantity.
5. The pollutant treating system of claim 1, wherein: the chlorine dioxide gas generating device is a supergravity device, and the pollutant treating equipment comprises a dissolving device connected with the supergravity device and a reaction device connected with the dissolving device; the effluent containing pollutants is wastewater, the pollutants in the wastewater contain volatile substances, the dissolving device receives the wastewater and chlorine dioxide gas input by the supergravity device, so that the chlorine dioxide gas is dissolved in the wastewater to obtain pre-treatment wastewater containing chlorine dioxide, the pre-treatment wastewater is input into the reaction device, the reaction device oxidizes the volatile substances in the pre-treatment wastewater by the chlorine dioxide dissolved in the pre-treatment wastewater and outputs the treated wastewater, the detector is a pollutant detector which detects the concentration of the volatile substances in the treated wastewater and transmits the concentration of the volatile substances to the controller, and the controller generates corresponding control signals to the medicament providing device according to the difference between the concentration of the volatile substances and the preset value, wherein said concentration of volatile substances is said physical quantity.
6. The pollutant treating system of any one of claims 2 to 5, wherein: when the difference value obtained by subtracting the preset value from the physical quantity is a positive value, the control signal controls the medicament providing device to increase the medicament quantity of the medicament provided for the chlorine dioxide gas generating device; when the difference value obtained by subtracting the preset value from the physical quantity is a negative value, the control signal controls the medicament providing device to reduce the medicament quantity of the medicament provided for the chlorine dioxide gas generating device.
7. The pollutant treating system of claim 1, wherein: the chlorine dioxide gas generating device is connected with the pollutant treating equipment through a first pipeline, the detector is a chlorine dioxide concentration detector arranged on the first pipeline, the detector is used for detecting the concentration of the chlorine dioxide gas output to the pollutant treating equipment by the chlorine dioxide gas generating device and providing the concentration of the chlorine dioxide gas to the controller, and when the controller judges that the concentration of the chlorine dioxide gas enables the concentration of pollutants to reach the preset value, the controller controls the medicament providing device to maintain the medicament amount of the medicament provided for the chlorine dioxide gas generating device, and the concentration of the chlorine dioxide gas is the physical amount; wherein when the controller determines that the concentration of chlorine dioxide gas is below a first threshold, the controller causes the control signal to control the medicament providing device to increase the amount of the medicament provided to the chlorine dioxide gas generating device; when the controller judges that the concentration of the chlorine dioxide gas is higher than a second critical value, the controller controls the medicament providing device to reduce the medicament amount of the medicament provided for the chlorine dioxide gas generating device by the control signal.
8. The pollutant treating system of claim 1, wherein: the chlorine dioxide gas generating device is connected with the pollutant treating equipment by a first pipeline, the detector is a chlorine dioxide concentration detector arranged on the first pipeline, the detector is used for detecting the concentration of the chlorine dioxide gas output by the chlorine dioxide gas generating device to the pollutant treating equipment and providing the concentration of the chlorine dioxide gas to the controller, the pollutant treating system also comprises an air pipeline used for introducing air into the chlorine dioxide gas generating device and a gas flowmeter arranged in the air pipeline and electrically connected with the controller, the gas flowmeter is used for measuring a flow rate of the chlorine dioxide gas and providing the flow rate to the controller, and the controller calculates a yield of the chlorine dioxide gas generated by the chlorine dioxide gas generating device according to the concentration and the flow rate of the chlorine dioxide gas, and the controller controls the medicament providing device to maintain the medicament amount of the medicament provided to the chlorine dioxide gas generating device when the controller judges that the yield of the chlorine dioxide gas enables the concentration of pollutants to reach the preset value; wherein when the controller determines that the production of chlorine dioxide gas is below a third threshold, the controller causes the control signal to control the medicament providing device to increase the amount of the medicament provided to the chlorine dioxide gas generating device; when the controller judges that the output of the chlorine dioxide gas is higher than a fourth critical value, the controller controls the medicament providing device to reduce the medicament amount of the medicament provided for the chlorine dioxide gas generating device through the control signal.
9. The pollutant treating system of claim 1, wherein: the medicament providing device is connected with the chlorine dioxide gas generating device through a second pipeline, the detector is a medicament flowmeter arranged on the second pipeline, the detector is used for measuring the medicament amount of the medicament provided by the medicament providing device to the chlorine dioxide gas generating device and providing the medicament amount to the controller, and the controller controls the medicament providing device to maintain the medicament amount of the medicament provided to the chlorine dioxide gas generating device when judging that the medicament amount enables the concentration of pollutants to reach the preset value, and the medicament amount is the physical amount; when the controller judges that the medicine quantity is lower than a fifth critical value, the control signal controls the medicine providing device to increase the medicine quantity of the medicine provided for the chlorine dioxide gas generating device; and when the controller judges that the medicine amount is higher than a sixth critical value, the controller controls the medicine providing device to reduce the medicine amount of the medicine provided for the chlorine dioxide gas generating device by the control signal.
10. The pollutant treating system of any one of claims 1 to 5, 7 to 9, wherein: the medicament comprises at least two kinds of reactive liquids which are fully mixed in the chlorine dioxide gas generating device to react and transmit gas and liquid to generate chlorine dioxide gas.
CN202010061444.1A 2020-01-19 2020-01-19 Pollutant treatment system Pending CN113134293A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010061444.1A CN113134293A (en) 2020-01-19 2020-01-19 Pollutant treatment system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010061444.1A CN113134293A (en) 2020-01-19 2020-01-19 Pollutant treatment system

Publications (1)

Publication Number Publication Date
CN113134293A true CN113134293A (en) 2021-07-20

Family

ID=76809229

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010061444.1A Pending CN113134293A (en) 2020-01-19 2020-01-19 Pollutant treatment system

Country Status (1)

Country Link
CN (1) CN113134293A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3957949A (en) * 1973-04-10 1976-05-18 Fuji Kasui Engineering Co., Ltd. Process for removing nitrogen oxides from gas
CN1404902A (en) * 2001-09-18 2003-03-26 财团法人工业技术研究院 Method for processing contaminated gas and apparatus
CN1658954A (en) * 2002-06-05 2005-08-24 埃克森美孚研究工程公司 Process for reducing NOx in waste gas streams using chlorine dioxide
CN101385942A (en) * 2008-10-13 2009-03-18 浙江大学 Liquid-phase oxidation-absorption two-stage wet method flue-gas denitration technique
TWM450422U (en) * 2012-11-09 2013-04-11 Zhi-Qian Xie Advanced oxidation processing device for organic waste gas
CN205042346U (en) * 2015-08-16 2016-02-24 南京理工大学 Boiler is chlorine dioxide oxidant feed system for flue gas denitration
CN209081517U (en) * 2018-11-19 2019-07-09 陈良贤 A kind of exhaust gas wastewater treatment equipment

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3957949A (en) * 1973-04-10 1976-05-18 Fuji Kasui Engineering Co., Ltd. Process for removing nitrogen oxides from gas
CN1404902A (en) * 2001-09-18 2003-03-26 财团法人工业技术研究院 Method for processing contaminated gas and apparatus
CN1658954A (en) * 2002-06-05 2005-08-24 埃克森美孚研究工程公司 Process for reducing NOx in waste gas streams using chlorine dioxide
CN101385942A (en) * 2008-10-13 2009-03-18 浙江大学 Liquid-phase oxidation-absorption two-stage wet method flue-gas denitration technique
TWM450422U (en) * 2012-11-09 2013-04-11 Zhi-Qian Xie Advanced oxidation processing device for organic waste gas
CN205042346U (en) * 2015-08-16 2016-02-24 南京理工大学 Boiler is chlorine dioxide oxidant feed system for flue gas denitration
CN209081517U (en) * 2018-11-19 2019-07-09 陈良贤 A kind of exhaust gas wastewater treatment equipment

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
徐威: "《普通高等院校环境科学与工程类系列规划教材 环境微生物学》", 28 February 2017, 中国建材工业出版社 *

Similar Documents

Publication Publication Date Title
US6921476B2 (en) UV-assisted advanced-ozonation water treatment system and advanced-ozonation module
US6913737B2 (en) Method for the treating in exhaust gas and exhaust gas treating system
US20030065236A1 (en) Process for the low-corrosion and low-emission co-incineration of highly halogenated wastes in waste incineration plants
JP5953342B2 (en) Sulphite control to reduce mercury re-emissions
US5227306A (en) Method and apparatus for controlling the rate of chlorine dioxide generation
JP2015139775A (en) mercury re-emission control
CN113582323A (en) Automatic Fenton reaction device and control method
US20120070365A1 (en) Process and apparatus for preparing molecular bromine
CN113134293A (en) Pollutant treatment system
TWM601140U (en) Contaminant treatment system
JP6911002B2 (en) Water treatment controller and water treatment system
CN112206642A (en) Exhaust gas treatment method
JPS5913889B2 (en) cleaning equipment
EP1316352A1 (en) Method for treating mercury in exhaust gas and exhaust gas treating system
JP5980652B2 (en) Persulfate treatment apparatus, persulfate treatment method, oxidation-reduction potential measurement apparatus, and oxidation-reduction potential measurement method
JPH10128053A (en) Stack gas treating device and treatment of stack gas
CN212091616U (en) Oxidation system for flue gas NOx
JP4790243B2 (en) Method for treating wastewater containing sulfur compounds
JP4433268B2 (en) Wet flue gas desulfurization method and apparatus
JP5995678B2 (en) Oxidant treatment method and oxidant treatment apparatus
JP2010162520A (en) Denitrification device
TWI696489B (en) Exhaust gas treatment method
KR102526870B1 (en) Apparatus for simultaneously processing desulfurization and denitrification and composition for simultaneously processing desulfurization and denitrification
CN107215854A (en) A kind of devices and methods therefor for producing nitric acid
WO2023162593A1 (en) Water treatment device and water treatment method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20210720

WD01 Invention patent application deemed withdrawn after publication