KR102598857B1 - Environmental processing apparatus and method - Google Patents

Abstract

It relates to an environmental treatment device, which includes an exhaust gas treatment unit that processes pollutants from exhaust gas using an absorbent liquid; A sensor unit that measures gas properties of the exhaust gas; a flow path unit that discharges contaminated water, which is a contaminated absorbent liquid from the exhaust gas treatment unit, into at least one of a plurality of treatment water tanks based on the measurement results of the gas properties; and a wastewater treatment unit that includes the plurality of treatment water tanks and processes the discharged contaminated water, wherein the exhaust gas treatment unit uses the treated water treated in the wastewater treatment unit as a second absorption liquid to remove the wastewater from the second exhaust gas. It may be processing contaminants.

Description

ENVIRONMENTAL PROCESSING APPARATUS AND METHOD}

This application relates to environmental treatment devices and methods. More specifically, the present application relates to an environmental treatment device and method that can treat the contaminants in the exhaust gas by treating the absorbent liquid that has treated the contaminants in the exhaust gas, and using the treated water as the absorbent liquid again to treat the contaminants in the exhaust gas.

Recently, as people's interest in air pollution due to fine dust and ultrafine dust has increased, the development of air pollution prevention technology is increasingly required. In particular, there is a growing need for awareness of harmful gases emitted from industrial workplaces and development of technology to control them.

In particular, since there are many types of harmful gases and their physical and chemical properties vary, it is important to select prevention facilities and treatment methods according to the gas composition and properties. Meanwhile, as one of the harmful gas treatment methods, there is a treatment method by absorption. The principle of absorption is to remove harmful gases by dissolving or chemically reacting the contaminated gas with the absorption liquid.

Water or an aqueous solution is generally used as the absorbent liquid. In the prior art, it is common to reuse the absorbent liquid by circulating it through a circulation pump. However, as the absorbent liquid itself becomes contaminated the more times it is reused, the number of reuses is limited, and the absorbent liquid needs to be drained or disposed of periodically. Therefore, the conventional air pollution prevention facility by absorption has a problem in that it is difficult to continuously supply fresh water and purify and treat waste water (waste absorption liquid).

In addition, since it is generally preset as an absorbent liquid for treating harmful gases mainly discharged from workplaces, there is a problem that the absorbent liquid cannot be adjusted accordingly when the gas properties of the exhaust gas are fluid.

The technology behind this application is disclosed in Korean Patent Publication No. 10-1769033.

The purpose of this application is to solve the problems of the prior art described above. By supplying the treated water from the wastewater treatment unit to the exhaust gas treatment unit as an absorbent liquid, only the purified absorbent liquid can be continuously supplied to the exhaust gas treatment unit, thereby achieving optimal absorption efficiency. The purpose is to provide a sustainable environmental treatment device and method.

The present application is intended to solve the problems of the prior art described above, and provides an environmental treatment device and method that determines the state of the absorbent liquid according to the real-time properties of the exhaust gas, thereby customizing the supply of an absorbent liquid suitable for the treatment of each exhaust gas of various properties. The purpose is to provide.

The present application is intended to solve the problems of the prior art described above, by treating the contaminated water using different treatment tanks depending on the state of the contaminated water, which is an absorbent liquid contaminated by absorbing exhaust gas and pollutants in the exhaust gas, The purpose is to provide an environmental treatment device and method that can self-purify and discharge contaminated water without having a separate waste absorbent liquid treatment facility or entrusting separate waste absorbent liquid treatment, or resupply it as an absorbent liquid to the exhaust gas treatment unit.

However, the technical challenges sought to be achieved by the embodiments of the present application are not limited to the technical challenges described above, and other technical challenges may exist.

As a technical means for achieving the above-described technical problem, an environmental treatment device according to an embodiment of the present application includes an exhaust gas treatment unit that processes pollutants from exhaust gas using an absorbent liquid, and a sensor that measures the gas properties of the exhaust gas. a flow path unit for discharging contaminated water, which is a contaminated absorbent liquid from the exhaust gas treatment unit, into at least one of a plurality of treatment water tanks based on the measurement results of the gas properties, and a plurality of treatment water tanks, wherein the discharged contaminated water is It may include a wastewater treatment unit, wherein the exhaust gas treatment unit treats contaminants from the second exhaust gas using treated water treated in the wastewater treatment unit as a second absorption liquid.

According to an embodiment of the present application, it may further include a control unit that selectively controls opening and closing of the flow path unit based on the measurement result of the sensor unit.

According to an embodiment of the present application, the flow path portion includes a discharge flow path portion that discharges the contaminated water from the exhaust gas treatment unit to the wastewater treatment unit, and a supply unit that re-supplies the treated water treated in the wastewater treatment unit to the exhaust gas treatment unit. It may include the euro part.

According to an embodiment of the present application, the supply flow passage part is a first supply flow path part that maintains the pH of the first treated water treated in the wastewater treatment unit and supplies it to the exhaust gas treatment unit, and the second treatment water treated in the wastewater treatment unit. It may include a second supply flow passage that increases the pH of the water and supplies it to the exhaust gas treatment unit, and a third supply flow passage that reduces the pH of the third treated water treated in the wastewater treatment unit and supplies it to the exhaust gas treatment unit. there is.

According to an embodiment of the present application, the plurality of treatment water tanks include an aerobic tank, an anaerobic tank, and an anoxic tank, and the discharge flow path unit discharges the first contaminated water, which is an absorbent liquid contaminated in the exhaust gas treatment unit, to the aerobic tank. 1 discharge passage part, a second discharge flow passage part that discharges the second contaminated water, which is the absorbent liquid contaminated from the exhaust gas treatment unit, into the anaerobic tank, and the third polluted water, which is the absorbent liquid polluted by the exhaust gas treatment unit, into the anoxic tank. 3 It may include an emission euro section.

According to an embodiment of the present application, the sensor unit may measure the gas properties including the pH of the exhaust gas and the condition of the treated water including the pH of the treated water.

According to one embodiment of the present application, the control unit selectively opens and closes the first supply flow path portion, the second supply flow path portion, and the third supply flow path portion based on the pH of the exhaust gas and the pH of the treated water. It could be controlling.

According to an embodiment of the present application, it further includes a chemical supply unit that supplies a basic chemical to the second supply flow passage and an acidic chemical to the third supply flow passage, and the control unit controls the pH and pH of the exhaust gas. The supply amount of the basic chemical and the acidic chemical may be adjusted based on the pH of the treated water.

According to an embodiment of the present application, the flow path unit includes a flow control valve, and the sensor unit measures the amount of the exhaust gas and the concentration of pollutants contained in the exhaust gas as the gas properties, and The control unit may control the flow rate control valve based on the amount of exhaust gas and the concentration of the pollutants to adjust the amount of the second absorbent liquid.

As a technical means for achieving the above-described technical problem, an environmental treatment method performed by an environmental treatment device according to an embodiment of the present application includes the steps of: an exhaust gas treatment unit treating pollutants from exhaust gas using an absorbent liquid; A sensor unit measuring the gas properties of the exhaust gas, a flow path unit discharging contaminated water, which is a contaminated absorbent liquid from the exhaust gas treatment unit, into at least one of a plurality of treatment water tanks based on the measurement results of the gas properties, waste water A treatment unit treating the discharged contaminated water, the flow unit re-supplying the treated water treated in the contaminated water treatment process to the exhaust gas treatment unit, and the exhaust gas treatment unit processing the treated water. It may include the step of treating contaminants from the second exhaust gas by using the second absorbent liquid.

The above-described means of solving the problem are merely illustrative and should not be construed as intended to limit the present application. In addition to the exemplary embodiments described above, additional embodiments may be present in the drawings and detailed description of the invention.

According to the means for solving the problem of the present application described above, by supplying the treated water treated in the wastewater treatment unit as an absorbent liquid to the exhaust gas treatment unit, only the purified absorption liquid can be continuously supplied to the exhaust gas treatment unit, thereby maintaining optimal absorption efficiency.

According to the means for solving the problem of the present application described above, the state of the absorbent liquid is determined according to the real-time properties of the exhaust gas, so that an absorbent liquid suitable for treating each exhaust gas of various properties can be customized and supplied.

According to the means for solving the problem of the present application described above, the contaminated water is treated using different treatment tanks depending on the state of the contaminated water, which is an absorbent liquid contaminated by absorbing exhaust gas and pollutants in the exhaust gas, so that contaminated water in various states can be separated. It can be purified and discharged on its own without having a waste absorbent liquid treatment facility or entrusting a separate waste absorbent liquid treatment, or it can be re-supplied as an absorbent liquid to the exhaust gas treatment unit.

However, the effects that can be obtained herein are not limited to the effects described above, and other effects may exist.

1 is a schematic configuration diagram of an environmental treatment system according to an embodiment of the present application.
Figure 2 is a schematic configuration diagram of the plant portion of an environmental treatment device according to an embodiment of the present application.
Figure 3 is a schematic block diagram of an environmental treatment device according to an embodiment of the present application.
Figure 4 is an operation flowchart of an environmental treatment method according to an embodiment of the present application.

Below, with reference to the attached drawings, embodiments of the present application will be described in detail so that those skilled in the art can easily implement them. However, the present application may be implemented in various different forms and is not limited to the embodiments described herein. In order to clearly explain the present application in the drawings, parts that are not related to the description are omitted, and similar reference numerals are assigned to similar parts throughout the specification.

Throughout this specification, when a part is said to be “connected” to another part, this means not only “directly connected” but also “electrically connected” or “indirectly connected” with another element in between. "Includes cases where it is.

Throughout this specification, when a member is said to be located “on”, “above”, “at the top”, “below”, “at the bottom”, or “at the bottom” of another member, this means that a member is located on another member. This includes not only cases where they are in contact, but also cases where another member exists between two members.

Throughout the specification of the present application, when a part "includes" a certain component, this means that it may further include other components rather than excluding other components unless specifically stated to the contrary.

Throughout the specification of this application, 'one side' refers to the direction of the starting point of each arrow in the arrows showing the flow direction of the absorbent liquid and the treatment liquid shown in FIG. 2, and 'the other side' refers to the direction of the ending point of the arrow. It may be. In other words, in the case of the passage portion 130 connecting the exhaust gas treatment unit 110 and the wastewater treatment unit 120, specifically, the discharge passage portion 131, the direction of the exhaust gas treatment unit 110 is on one side, and the wastewater treatment unit 120 ) direction may be on the other side, and in the case of the flow path portion 130 connecting the wastewater treatment unit 120 and the chemical supply unit 150, the direction of the wastewater treatment unit 120 may be on one side and the direction of the chemical supply unit 150 may be on the other side, , the flow path portion 130 connecting the chemical supply unit 150 and the exhaust gas treatment unit 110. Specifically, in the case of the supply flow passage unit 132, the chemical supply unit 150 direction is on one side and the exhaust gas treatment unit 110 direction is on one side. This could be the other side.

This application relates to environmental treatment devices and methods. More specifically, the present application relates to an environmental treatment device and method that can treat the contaminants in the exhaust gas by treating the absorbent liquid that has treated the contaminants in the exhaust gas, and using the treated water as the absorbent liquid again to treat the contaminants in the exhaust gas.

1 is a schematic configuration diagram of an environmental treatment system according to an embodiment of the present application.

Referring to FIG. 1, the environmental treatment system 10 according to an embodiment of the present application may include an environmental treatment device 100 and an administrator terminal 300. Additionally, the environmental processing device 100 and the manager terminal 300 may communicate through the network 200.

Referring to FIG. 1, the environmental treatment device 100 may include a plant unit 101 and a server unit 102. The plant unit 101 may refer to plant equipment provided for environmental treatment, and the server unit 102 may perform operation control of the plant unit 101 using computer programs and algorithms. It may mean server. Specifically, referring to FIG. 3, the plant unit 101 may include an exhaust gas treatment unit 110, a wastewater treatment unit 120, a flow path unit 130, a sensor unit 140, and a chemical supply unit 150. , the server unit 102 may include a determination unit 160 and a control unit 170, but is not limited thereto.

According to an embodiment of the present application, the environmental processing device 100 may transmit various monitoring information to the manager terminal 300 through the network 200.

Specifically, the environmental treatment device 100 is a monitoring unit that monitors at least one of the gas properties of the exhaust gas, the status of the contaminated water, the status of the treated water, and the status of each facility included in the plant unit 101. (not shown) and an abnormality prediction unit (not shown) that predicts whether an abnormality (problem) occurs in the environmental treatment device 100 and the cause of the abnormality based on the monitoring results monitored by the monitoring unit (not shown). can do. At this time, the monitoring unit (not shown) may receive the sensing results of the sensor unit 140, which will be described later, and may include separate monitoring and measurement equipment such as a camera in addition to the sensing information through the sensor unit 140. there is.

For example, a basic chemical is supplied from the chemical supply unit 150 to the water treated in the wastewater treatment unit 120 to increase the pH to a set specific value, but the pH is not measured by the sensor unit 140 or the monitoring unit (not shown). If the pH of the supply water passing through the second supply flow passage part 132b appears to be lower than a specific value, the abnormality prediction part (not shown) is the chemical supply part 150 that supplied the basic chemical or the flow path part 130 through which the treated water and the feed water pass. ), etc., it is expected that an abnormality has occurred, and comprehensive monitoring information including information on the set specific value, the pH value of the measured supply water, whether the expected abnormality occurred, and the cause of the abnormality can be transmitted to the manager terminal 300. .

As another example, considering the characteristics of the institution, company, and facility where the environmental treatment device 100 is installed, the expected exhaust gas characteristics of the exhaust gas expected to be generated and the exhaust gas measured by the sensor unit 140 If the measured exhaust gas properties are different, the abnormality prediction unit (not shown) predicts that an abnormality has occurred in the sensor unit 140 that measures the gas properties of the exhaust gas, and the expected exhaust gas properties, measured exhaust gas properties, and exhaust Comprehensive monitoring information, including information on the location and type of the sensor unit 140 that measures the gas properties of the gas, whether an expected abnormality occurred, and the cause of the abnormality, can be transmitted to the manager terminal 300.

For another example, depending on the gas properties of the exhaust gas and the state of the absorbent liquid, the determination unit 160 determines that the absorbent liquid should be treated in the first treatment tank, and the control unit 170 determines that the exhaust gas treatment unit 110 And the first discharge channel connecting the first treatment tank is opened, but as a result of monitoring the first treatment tank by the monitoring unit (not shown), if no inflow of absorbent liquid is found, the abnormality prediction unit (not shown) discharges the first discharge channel. It is expected that a problem has occurred in the control unit 170, which controls the opening and closing of the flow path or the first discharge flow path, and the gas properties of the exhaust gas, the state of the absorbent liquid, the treatment tank for appropriate treatment of the absorbent liquid determined by the determination unit 160, and the corresponding Comprehensive monitoring information, including information on the monitoring results of the treatment tank, whether expected abnormalities occur, and the cause of the abnormalities, can be transmitted to the manager terminal 300.

However, it is not limited to this, and the environmental treatment device 100 may generate monitoring information according to various predictions and judgment results based on various monitoring results for the plant unit 101 other than the examples described above. In addition, a detailed description of the exhaust gas treatment unit 110, wastewater treatment unit 120, flow path unit 130, sensor unit 140, chemical supply unit 150, determination unit 160, and control unit 170 is provided. , which will be described later with reference to FIGS. 2 and 3.

In other words, the monitoring unit (not shown) transmits the monitoring results of monitoring the status of the environmental treatment device 100 to the abnormality prediction unit (not shown), and the abnormality prediction unit (not shown) receives the received monitoring results and the abnormality prediction unit (not shown). Monitoring information including whether the occurrence is expected and the probable cause of the abnormality when it is determined that an abnormality has occurred may be generated, and the generated monitoring information may be transmitted to the manager terminal 300. However, it is not limited to this, and the environmental processing device 100 may transmit monitoring information to a terminal and display device linked to the manager terminal 300, or a server device for recording and managing monitoring information.

The manager terminal 300 is a device that is linked with the environmental processing device 100 through the network 200, for example, a smartphone, a smart pad, a tablet PC, a wearable device, etc. and a PCS (Personal Communication System), GSM (Global System for Mobile communication), PDC (Personal Digital Cellular), PHS (Personal Handyphone System), PDA (Personal Digital Assistant), IMT (International Mobile Telecommunication)-2000, CDMA (Code Division Multiple Access) -2000, it may be all kinds of wireless communication devices such as W-CDMA (W-Code Division Multiple Access) and Wibro (Wireless Broadband Internet) terminals, and fixed terminals such as desktop computers and smart TVs.

In addition, examples of the network 200 for information sharing between the environmental processing device 100 and the manager terminal 300 include a 3rd Generation Partnership Project (3GPP) network, a Long Term Evolution (LTE) network, a 5G network, and a World Network (WIMAX) network. Interoperability for Microwave Access) network, wired and wireless Internet, LAN (Local Area Network), Wireless LAN (Wireless Local Area Network), WAN (Wide Area Network), PAN (Personal Area Network), Bluetooth network, Wifi Network, NFC (Near Field Communication) network, satellite broadcasting network, analog broadcasting network, DMB (Digital Multimedia Broadcasting) network, etc. may be included, but are not limited thereto.

Figure 2 is a schematic configuration diagram of the plant portion of an environmental treatment device according to an embodiment of the present application. Additionally, Figure 3 is a schematic block diagram of an environmental treatment device according to an embodiment of the present application.

2 and 3, the environmental treatment device 100 includes a plant unit 101 and a server unit 102, and the plant unit 101 includes an exhaust gas treatment unit 110, a wastewater treatment unit 120, It may include a flow path unit 130, a sensor unit 140, and a medicine supply unit 150, and the server unit 102 may include a determination unit 160 and a control unit 170.

According to an embodiment of the present application, the exhaust gas treatment unit 110 may treat pollutants from exhaust gas using an absorbent liquid. In other words, the exhaust gas treatment unit 110 may refer to an air pollution prevention facility that removes pollutants from exhaust gas through gas absorption.

Here, gas absorption refers to a series of processes that bring gas into contact with a liquid and dissolve soluble components in the gas in the liquid phase, and the treatment facility by such absorption is a scrubber or gas absorption tower ( It can be collectively referred to as Gas Absorption tower. In addition, the absorption liquid referred to herein may mean a liquid in which the gas according to the above description can be contacted and dissolved. In other words, the exhaust gas treatment unit 110 according to an embodiment of the present application causes the exhaust gas to contact the absorbent liquid, so that pollutants in the exhaust gas in contact with the absorbent liquid are dissolved, thereby processing the pollutants by absorbing them from the exhaust gas. can do.

Meanwhile, the wastewater treatment unit 120 according to an embodiment of the present application may mean a facility for purifying and treating sewage and wastewater, but is not limited thereto, and is a facility for improving water quality, such as treating rainwater and increased water. It can be interpreted as broadly including. For example, the wastewater treatment unit 120 may include a grit basin, a screen tank, a sump tank, a drum screen, a flow rate adjustment tank, an aerobic tank, a membrane bio reactor (MBR), and a discharge tank (treatment tank). Since the contents related to this are self-evident to those skilled in the art, detailed description will be omitted below.

Additionally, referring to FIG. 2, the wastewater treatment unit 120 may include a plurality of treatment water tanks 121, 122, and 123. The plurality of treatment tanks may include, but are not limited to, an aerobic tank 121, an anaerobic tank 122, and an anoxic tank 123, and may include a chemical treatment tank for performing chemical treatment and a sedimentation treatment tank for performing precipitation treatment. and a water tank for performing various types of wastewater treatment, such as a filtration treatment tank for performing filtration treatment.

Referring to FIG. 2, the exhaust gas treatment unit 110 and the wastewater treatment unit 120 may be connected to each other through the flow path unit 130. At this time, the flow path portion 130 may be a connection passage for absorbing contaminants in the exhaust gas from the exhaust gas treatment unit 110 and delivering the contaminated water, which is a contaminated absorbent liquid, to the treatment tank of the wastewater treatment unit 120. Additionally, the flow path portion 130 may be a connection passage for delivering treated water treated in the wastewater treatment unit 120 back to the exhaust gas treatment unit 110. That is, according to an embodiment of the present application, the exhaust gas treatment unit 110 and the wastewater treatment unit 120 may be installed together in one facility (institutions, workplaces, commercial facilities, residential facilities, etc.), and the flow path unit ( 130) may transfer contaminated water and treated water between the exhaust gas treatment unit 110 and the wastewater treatment unit 120 to enable circulation of liquid (absorbent liquid, contaminated water, and treated water, etc.).

As an example, the flow path unit 130 may connect the absorbent liquid supply unit (not shown) of the exhaust gas treatment unit 110 and the plurality of treatment water tanks 121, 122, and 123 of the wastewater treatment unit 120. For example, the flow path portion 130 may be provided in the form of a pipe, and at least some of the treated water in the treatment water tanks 121, 122, and 123 of the wastewater treatment unit 120 flows into the flow path portion as the discharge pump is driven. It may move to the absorbent liquid supply unit (not shown) of the exhaust gas treatment unit 110 through 130.

Specifically, the exhaust gas treatment unit 110 processes exhaust gas using an absorbent liquid, and the flow path unit 130 absorbs contaminants in the exhaust gas and discharges contaminated water, which is a contaminated absorbent liquid, to the wastewater treatment unit 120, The wastewater treatment unit 120 processes contaminated water, and the flow path unit 130 supplies the treated water treated in the wastewater treatment unit 120 back to the exhaust gas treatment unit 110, allowing the liquid to circulate without being discharged. there is.

In other words, the flow path portion 130 discharges the discharge flow portion 131 that discharges contaminated water, which is a contaminated absorbent liquid, from the exhaust gas treatment unit 110 to the wastewater treatment unit 120, and discharges the treated water treated in the wastewater treatment unit 120. It may include a supply passage unit 132 that re-supplies the gas processing unit 110. Specifically, the discharge flow path unit 131 has the same number as the plurality of treatment water tanks 121, 122, and 123 in order to discharge contaminated water from the exhaust gas treatment unit 110 to each of the plurality of treatment water tanks 121, 122, and 123. It may be provided as, and the supply flow path unit 132 is configured to change each of the changed treated water to the exhaust gas treatment unit 110 as the condition including the pH of the treated water is changed through the chemical supply unit 150, which will be described later. A plurality of them may be provided for re-supply.

According to this, the environmental treatment device 100 can independently process the absorbent liquid for treatment of exhaust gas, so there is no need to provide a separate waste absorbent liquid treatment facility or entrust the treatment of the waste absorbent liquid separately, and the environmental treatment device 100 can independently process the absorbent liquid. Water can be used again as an absorbent liquid for treating exhaust gas, so purified absorbent liquid can be continuously supplied without receiving new water from an external water source, helping to maintain absorption efficiency at an optimal state.

Additionally, the flow path unit 130 may include a flow control valve (not shown) to control the flow rate of the absorbent liquid and treated water passing through the flow path part 130. The flow control valve (not shown) may be provided in the form of a solenoid valve or a needle valve, and may adjust the flow rate of the absorbent liquid and the treated water through opening and closing control by the control unit 170, which will be described later.

Referring to FIG. 2, the sensor unit 140 can measure the gas properties of the exhaust gas, the state of the absorption liquid, and the state of the treatment liquid. Additionally, the sensor unit 140 may include a first sensor unit 140a provided in the exhaust gas treatment unit 110 and a second sensor unit 140b provided in the wastewater treatment unit 120.

For example, when the exhaust gas treatment unit 110 is implemented in the form of a packed tower, the first sensor unit 140a is provided in a gas supply unit (not shown) such as a duct to detect exhaust gas before treatment. It may be installed in the gas discharge unit (not shown) to measure the properties of the exhaust gas after processing. In addition, the first sensor unit 140a is provided outside or inside the absorbent liquid tank (a space containing uncontaminated absorbent liquid or a space where contaminated water, which is a contaminated absorbent liquid, is collected, etc.), to determine the state of the absorbent liquid before the exhaust gas flows in. This may be to measure the state of the absorbent liquid after exhaust gas flows in and absorbs contaminants in the exhaust gas. As another example, the second sensor unit 140b is provided outside a plurality of treatment water tanks or inside each treatment water tank to determine the status of the water treated in the wastewater treatment unit 120 and the liquid contained in each treatment water tank. It may be measuring a state, etc. However, it is not limited to this, and the positions, shapes, types, and numbers of the first sensor unit 140a and the second sensor unit 140b may be formed and provided in various ways.

Specifically, the first sensor unit 140a measures the amount of exhaust gas, pH, temperature, pollutants (CO2, NH3, NOx, SOx, dust, VOC, HCl, HF, Cl2, H2S, amines, alcohol) (Alohol, other organic substances, etc.) components, the gas properties of the exhaust gas, including the concentration of pollutants, the amount of absorbent liquid before or after absorbing the pollutants in the exhaust gas, pH, ORP (Oxidation-reduction potential), It measures the state of the absorbent liquid, including temperature, water level (water level in the water tank), COD (Chemical oxygen demand), BOD (Biochemical oxygen demand), and the concentration of contaminants contained in the absorbent liquid after absorbing pollutants from the exhaust gas. You can. In addition, the second sensor unit 140b processes processing including pH, ORP (Oxidation-reduction potential), temperature, water level (water level in the water tank), COD (Chemical oxygen demand), BOD (Biochemical oxygen demand), etc. of the treated water. It may be a measure of the state of water. Meanwhile, various types of sensors that have been developed or will be developed in the future may be applied to the sensor unit 140 to measure the above items.

Hereinafter, for convenience of explanation, the exhaust gas processed by the exhaust gas treatment unit 110 will be referred to as first exhaust gas, and the absorption liquid that absorbs contaminants in the first exhaust gas will be referred to as first absorption liquid. In addition, when the first absorbent liquid contaminated by absorbing pollutants is received and the treated water treated in the wastewater treatment unit 120 is resupplied to the exhaust gas treatment unit 110, the treated water resupplied to the exhaust gas treatment unit 110 The number will be referred to as the second absorption liquid, and the exhaust gas to be treated using the second absorption liquid will be referred to as the second exhaust gas. In other words, the exhaust gas treatment unit 110 may treat pollutants from the second exhaust gas by using the treated water treated in the wastewater treatment unit 120 as a second absorption liquid.

According to an embodiment of the present application, the chemical supply unit 150 is used to adjust the pH of the treated water to the supply passage unit 132 that re-supplies the treated water treated in the wastewater treatment unit 120 to the exhaust gas treatment unit 110. Medicines can be supplied.

Specifically, the exhaust gas treatment unit 110 using the absorption method is capable of treating various pollutants, but in order to increase treatment efficiency, the chemical reaction of the pollutants can most easily occur depending on the pollutants contained in the exhaust gas. There is a need to select a suitable absorbent liquid. In other words, the absorbent liquid has different absorption performance depending on the gas properties of the exhaust gas, and the absorbent liquid suitable for the treatment may be different depending on the gas properties of the exhaust gas. At this time, the suitability of the absorbent liquid may mean that the exhaust gas has an absorption efficiency of a certain level or higher with respect to the absorbent liquid.

For example, when the gas nature of the exhaust gas is acidic, an alkaline absorption liquid may be suitable, and when the gas nature of the exhaust gas is basic, an acidic absorption liquid may be suitable. More specifically, if the pollutant contained in the exhaust gas is basic ammonia (NH ₃ ), the most suitable absorbent may be H ₂ SO ₄ , HCL, NaOCl, etc., and if the pollutant is acidic methyl mercaptan (CH ₃ In the case of SH), the most suitable absorbent liquid may be NaOH, NaOCl, etc. In this way, depending on the gas properties of the exhaust gas, including the types of contaminants contained in the exhaust gas, the type and properties of the most suitable absorbent liquid vary, and accordingly, the environmental treatment device (100) according to an embodiment of the present application ) can change and manufacture the state of the absorbent liquid to select and provide the absorbent liquid most suitable for treating pollutants contained in the exhaust gas, depending on the gas properties of the exhaust gas.

In other words, the environmental treatment device 100 according to an embodiment of the present application treats the waste gas to be re-supplied to the exhaust gas treatment unit 110 as a second absorption liquid according to the gas properties of the second exhaust gas through the chemical supply unit 150. By changing the state of the water differently, the state of the second absorbent liquid can be determined so that the contaminants contained in the second exhaust gas can be most effectively treated.

According to an embodiment of the present application, the determination unit 160 may determine the most appropriate state of the absorbent liquid according to the exhaust gas properties. In other words, the determination unit 160 can determine the type, state, and properties of the absorbent liquid most suitable for treating pollutants contained in the exhaust gas, considering the real-time properties of the exhaust gas. As an example, the determination unit 160 judges (determines) the most suitable state of the absorbent liquid according to the real-time pH of the exhaust gas, and the chemical supply unit 150 determines the state of the absorbent liquid determined by the determination unit 160 to determine the condition of the treated water. By changing or adjusting the state, the most suitable absorption liquid can be provided to the exhaust gas treatment unit 110.

Specifically, the chemical supply unit 150 adjusts the pH of the treated water according to the most suitable state of the absorbent liquid determined by the determination unit 160, and the supply passage unit 132 supplies the absorbent liquid produced by adjusting the pH to the exhaust gas treatment unit. It may be supplied to (110). At this time, the supply passage unit 132 may be provided in plural pieces in order to classify the absorption liquid in different states according to the adjustment of pH and supply it to the exhaust gas treatment unit 110.

In other words, according to an embodiment of the present application, the supply flow path portion 132 is a first supply flow path portion 132a that maintains the pH of the first treated water treated in the wastewater treatment unit 120 and supplies it to the exhaust gas treatment unit. , a second supply flow path unit 132b that increases the pH of the second treated water treated in the wastewater treatment unit 120 and supplies it to the exhaust gas treatment unit 110, and the pH of the third treated water treated in the wastewater treatment unit 120. It may include a third supply passage portion 132c that reduces and supplies the exhaust gas to the exhaust gas treatment unit 110. This means that when the treated water passes through the first supply passage portion 132a, there is no change in pH, and when the treated water passes through the second supply passage portion 132b, the pH increases and through the third supply passage portion 132c. If it passes, it can be interpreted as a decrease in pH.

In addition, the drug supply unit 150 does not supply drugs that affect the adjustment of pH to the first supply flow passage part 132a, or supplies only drugs without pH change (fluctuation), and supplies the second supply flow passage part 132b. A basic chemical may be supplied to and an acidic chemical may be supplied to the third supply passage portion 132c. At this time, basic chemicals may mean that the pH is higher than the pH of the treated water, and acidic chemicals may mean that the pH is lower than the pH of the treated water. That is, the second absorbent liquid re-supplied from the wastewater treatment unit 120 to the exhaust gas treatment unit 110 is the treated water itself, which flows in from the wastewater treatment unit 120 and is delivered through the first supply passage portion 132a, and the second supply. It may include a basic aqueous solution treated with a basic chemical delivered through the passage portion 132b and an acidic aqueous solution treated with an acidic chemical delivered through the third supply passage portion 132c. However, it is not limited to this.

That is, in summary with the above, referring to FIG. 2, the treated water treated in the wastewater treatment unit 120 flows into the chemical supply unit 150 through the flow path unit 130, and the chemical supply unit 150 processes the inflow. The number is adjusted (e.g., pH adjusted) to the state of an appropriate absorbent liquid determined by the determination unit 160 according to the gas properties of the exhaust gas measured by the sensor unit 140, and a plurality of supplies are supplied according to the state of the absorbent liquid. At least one of the flow passage parts 132a, 132b, and 132c may supply the absorbent liquid as the second absorbent liquid to the exhaust gas treatment unit 110.

At this time, the drug supply unit 150 and the supply passage unit 132 may be connected to each other. As an example with reference to FIG. 2, the drug supply unit 150 may be connected to the first supply flow passage part 132a, the second supply flow passage part 132b, and the third supply flow passage part 132c, respectively. It is not limited, and as another example, the chemical supply unit 150 is provided in the form of a nozzle inside each of the first supply passage portion 132a, the second supply passage portion 132b, and the third supply passage portion 132c. You can.

As described above, the environmental treatment device 100 according to an embodiment of the present application determines the state of the absorbent liquid according to the real-time properties of the exhaust gas, so that it can supply customized absorbent liquid suitable for the treatment of each exhaust gas of various properties. there is.

According to an embodiment of the present application, the control unit 170 may selectively control the opening and closing of the flow path unit 130 based on the measurement result of the sensor unit 140. According to the above, the sensor unit 140 can measure the gas properties of the exhaust gas, the state of the contaminated water that is a contaminated absorbent liquid, and the state of the treated water, and the flow path part 130 includes the discharge flow path part 131, It may include a supply passage portion 132 and a flow control valve (not shown).

In one embodiment, the flow path portion 130, more specifically the discharge flow path portion 131, collects the contaminated absorbent liquid from the exhaust gas treatment unit 110 based on the measurement results of the gas properties of the exhaust gas measured by the sensor unit 140. Phosphorus-contaminated water can be discharged into at least one of a plurality of treatment water tanks 121, 122, and 123, and the control unit 170 operates a plurality of discharge flow passage parts 131a and 131b connected to each treatment water tank according to gas properties. , 131c), the treatment tank through which the contaminated water is discharged may be selected by controlling the opening and closing of at least one of them.

Specifically, the discharge passage portion 131 is a first discharge passage portion 131a that discharges the first contaminated water, which is a contaminated absorbent liquid from the exhaust gas treatment unit 110, to the aerobic tank 121, and the exhaust gas treatment unit 110 A second discharge passage unit (131b) that discharges the second polluted water, which is a contaminated absorbent liquid, into the anaerobic tank (122), and a third discharge channel unit (131b) that discharges the third polluted water, which is a polluted absorbent liquid, from the exhaust gas treatment unit (110) to the anoxic tank (123). It may include an discharge passage portion 131c, and the control unit 170 controls the first discharge passage portion 131a, the second discharge passage portion 131b, and the first discharge passage portion 131b according to the gas properties of the exhaust gas and the state of the contaminated water. By controlling the opening and closing of at least one of the three discharge flow passage parts 131c, contaminated water can be controlled to be discharged into at least one of a plurality of treatment tanks including the aerobic tank 121, the anaerobic tank 122, and the anoxic tank 123.

At this time, the contaminated water discharged through the first discharge passage portion 131a is subjected to biological treatment in the aerobic tank 121, and the contaminated water discharged through the second discharge passage portion 131b is subjected to biological treatment in the anaerobic tank 122. is achieved, and the contaminated water discharged through the third discharge passage portion 131c may be subjected to biological treatment in the anoxic tank 123. In general, since the anaerobic tank 122 and the anoxic tank 123 are disposed at the front of the oxic tank 121, the contaminated water discharged through the second discharge passage portion 131b and the third discharge passage portion 131c is stored in the anaerobic tank 122. And after undergoing biological treatment in each of the anoxic tank 123, it may eventually be moved to the aerobic tank 121 and undergo biological treatment in the aerobic tank 121. However, it is not limited to this, and the treatment process for contaminated water may be set differently depending on the various treatment tanks available.

In another embodiment, the determination unit 160 determines the necessary biological treatment for the contaminated water in consideration of the state of the contaminated water, which is a contaminated absorbent, and is connected to the treatment tank for the biological treatment and the treatment tank to open and close the water. The discharge passage portions 131a, 131b, and 131c that require control can be determined. For example, the determination unit 160 determines whether biological treatment in the aerobic tank 121 is necessary as a nitrification process is required, or whether biological treatment in the anaerobic tank 122 is necessary as a phosphorus (P) elution (release) process is required. Depending on the state of the contaminated water, it can be determined whether a denitrification process is necessary and whether biological treatment in the anoxic tank 123 is necessary. As another example, the determination unit 160 determines whether the contaminated water requires treatment in a plurality of treatment tanks among the aerobic tank 121, the anaerobic tank 122, and the anoxic tank 123, and If it is determined that treatment is necessary, the discharge flow path connected to the treatment tank located at the very front within the wastewater treatment unit 120, into which the contaminated water first flows, may be determined.

That is, as a result of the judgment of the determination unit 160, if the contaminated water needs to be treated in the aerobic tank 121, the control unit 170 opens the first discharge passage portion 131a, and opens the second discharge passage portion 131b and The third discharge passage portion 131c may be controlled to be closed, and if the contaminated water requires treatment in the anaerobic tank 122, the control unit 170 may control the second discharge passage portion 131b to be opened, but the first discharge passage portion 131c may be controlled to be closed. The portion 131a and the third discharge passage portion 131c can be controlled to be closed, and when the contaminated water needs to be treated in the anoxic tank 123, the control unit 170 controls the third discharge passage portion 131c to be open. , the first discharge passage portion 131a and the second discharge passage portion 131b can be controlled to be closed.

In another embodiment, the control unit 170 controls the first supply passage portion 132a, the second supply passage portion 132b, and the third supply passage portion 132c based on the pH of the exhaust gas and the pH of the treated water. Opening and closing can be selectively controlled. As described above, the determination unit 160 determines the appropriate state of the absorbent liquid according to the real-time gas properties of the exhaust gas, and the chemical supply unit 150 supplies chemicals to the treated water according to the judgment result of the determination unit 160. The state of the second absorbent liquid is adjusted, and at least one of the plurality of supply passage parts 132a, 132b, and 132c can re-supply the second absorbent liquid supplied with the chemical to the exhaust gas treatment unit 110. At this time, the control unit ( 170) controls one of the plurality of supply flow passages 132a, 132b, and 132c to be opened for re-supplying the second absorbent liquid to the exhaust gas treatment unit 110, and the other supply flow passages are closed. You can.

For example, when the pH of the treated water is in the same range (including a predetermined error range) as the appropriate pH of the absorbent liquid determined by the determination unit 160, the control unit 170 opens the first supply passage portion 132a. However, when the second supply passage portion 132b and the third supply passage portion 132c are controlled to be closed, and the pH of the treated water is lower than the appropriate pH of the absorption liquid determined by the determination unit 160 by a predetermined range or more, The control unit 170 controls the second supply flow passage part 132b to be open and the first supply flow passage part 132a and the third supply flow passage part 132c to be closed, and the pH of the treated water is determined by the determination unit 160. If the appropriate pH of the absorption liquid determined in is higher than the predetermined range, the control unit 170 opens the third supply passage portion 132c, but the first supply passage portion 132a and the second supply passage portion 132b are opened. It can be controlled to close. Therefore, the treated water is not limited to treated water that has been uniformly adjusted to an arbitrary pH value (for example, pH 7), but also includes treated water of various pHs in the intermediate process that has not gone through the pH adjustment process. It may be.

As another example, the control unit 170 may adjust the supply amounts of basic chemicals and acidic chemicals supplied to the treated water from the chemical supply unit 150 based on the pH of the exhaust gas and the pH of the treated water. As described above, the flow path unit 130 may include a flow control valve (not shown), and the control unit 170 includes the first supply flow path part 132a, the second supply flow path part 132b, and the third supply flow path. By controlling the chemical supply volume control valve (not shown), which is a flow rate control valve (not shown) provided in the unit 132c, the first supply passage portion 132a, the second supply passage portion 132b, and the third supply passageway. The supply amount of chemicals supplied to the unit 132c can be controlled. At this time, the chemical supply amount control valve (not shown) is used to control the chemical supply rather than the other side of the supply flow passage 132 connected to the exhaust gas treatment unit 110, so as to prevent treated water in which the chemical supply has not been completed flowing into the exhaust gas treatment unit 110. It may be provided at one end connected to the supply unit 150.

Specifically, the control unit 170 determines the pH of the treated water based on the difference between the pH of the appropriate absorbent liquid determined by the determination unit 160 based on the pH of the exhaust gas measured by the sensor unit 140 and the pH of the treated water. The supply amount of basic or acidic chemicals supplied to the treated water can be controlled so that the pH varies in the same range as the pH of the appropriate absorbent liquid. Specifically, the control unit 170 controls the chemical supply amount control valve to control the amount of basic chemical supplied to the second supply passage portion 132b or the amount of acidic chemical supplied to the third supply passage portion 132c. (not shown) can be controlled. For example, the chemical supply volume control valve (not shown) may be provided in the form of a solenoid valve or a needle valve, but is not limited to this, and the chemical supply unit 150 may be connected to the second supply flow path portion 132b and the third supply flow path portion 132b. When provided in the form of a nozzle inside each passage portion 132c, the control unit 170 can control the corresponding nozzle and adjust the supply amount of the drug by adjusting the time at which the drug is sprayed through the nozzle. .

As another example, the flow rate control valve (not shown) of the flow path unit 130 is the absorbent liquid flow rate control valve (not shown) provided on the other side of the supply flow path part 132 connected to the exhaust gas treatment unit 110 and the wastewater treatment unit 120. ) It may include a treated water flow rate control valve (not shown) provided on one side of the connected flow path portion 130. At this time, the sensor unit 140 measures the amount of exhaust gas and the concentration of pollutants contained in the exhaust gas as the gas properties of the exhaust gas, and the determination unit 160 measures the measured amount of exhaust gas and the pollutants. Based on the concentration, the amount of absorbent liquid required for treatment of the exhaust gas is determined, and the control unit 170 determines the determination result of the determination unit 160, that is, the amount of exhaust gas measured by the sensor unit 140 and the amount of pollutants. By controlling the absorbent liquid flow rate control valve (not shown) based on the concentration, the amount of the second absorbent liquid supplied from the chemical supply unit 150 to the exhaust gas treatment unit 110 can be adjusted. In addition, the control unit 170 controls the treated water flow rate control valve (not shown) based on the amount of exhaust gas and the concentration of pollutants measured by the sensor unit 140, thereby discharging the chemical supply unit 150 from the wastewater treatment unit 120. ), the amount of the second absorption liquid can be indirectly adjusted by adjusting the amount of treated water delivered to. In other words, the control unit 170 can control the amount of required absorbent liquid (second absorbent liquid) differently depending on the amount of exhaust gas and the concentration of pollutants.

At this time, the wastewater treatment unit 120 and the chemical supply unit 150 include a separate treated water storage tank (not shown) or a second absorbent liquid storage tank (not shown), and due to flow rate control, the next stage configuration (described above) In the example, the treated water and the second absorbent liquid that have not been delivered to the exhaust gas treatment unit 110 or the chemical supply unit 150 may be stored, but this is not limited to this, and the treated water and the second absorbent liquid that have not been re-supplied to the exhaust gas treatment unit 110 Treated water may be discharged through a separate discharge flow path (not shown).

Additionally, the control unit 170 may control the absorbent liquid flow rate control valve (not shown) and the treated water flow rate control valve (not shown), respectively. Therefore, the control unit 170 opens the absorbent liquid flow control valve (not shown) to supply the second absorbent liquid containing the chemical to the exhaust gas treatment unit 110, and closes the treated water flow control valve (not shown) to process the water. It is possible to temporarily prevent water from continuously flowing into the chemical supply unit 150. Conversely, when the treated water flow control valve (not shown) is opened to allow treated water to flow into the chemical supply unit 150, the absorbent liquid flow control valve (not shown) is closed so that the previous absorbent liquid to which chemicals were supplied to correspond to the first exhaust gas is exhausted, rather than the treated water that has not completed the process of turning it into a second absorbent liquid such as chemical supply or the second exhaust gas, which is real-time exhaust gas. Continuous supply to the gas processing unit 110 can be temporarily prevented. However, it is not limited to this, and the control unit 170 may control the absorbent liquid flow rate control valve (not shown) and the treated water flow rate control valve (not shown) to be opened or closed simultaneously.

Specifically, the control unit 170 may control the opening time or the degree of opening and closing of the flow control valve (not shown) according to the amount of the necessary second absorbent liquid determined by the determination unit 160. For example, when the amount of exhaust gas to be treated increases, or when the concentration of pollutants contained in the exhaust gas increases, the amount of absorbent liquid required increases, and accordingly, the control unit 170 adjusts the absorbent liquid flow rate. The opening time of the valve (not shown) and/or the treated water flow control valve (not shown) may be increased or the degree of opening may be increased (widened). Conversely, when the amount of exhaust gas to be treated decreases, or when the concentration of pollutants contained in the exhaust gas decreases, the amount of absorbent liquid required decreases, and accordingly, the control unit 170 controls the absorbent fluid flow rate control valve ( (not shown) and/or the opening time of the treated water flow control valve (not shown) may be reduced or the opening degree may be made small (narrow). At this time, increasing (widening) the degree of opening may mean increasing the flow rate per unit time, and decreasing (narrowing) the degree of opening may mean decreasing the flow rate per unit time.

According to an embodiment of the present application, the environmental treatment device 100 absorbs exhaust gas and pollutants in the exhaust gas and uses different treatment water tanks (including 121, 122, and 123) depending on the state of the contaminated water, which is a contaminated absorbent liquid. By treating the contaminated water, the contaminated water in various states can be purified and discharged on its own without having to install a separate waste absorbent liquid treatment facility or entrust a separate waste absorbent liquid treatment facility, or re-supply it to the exhaust gas treatment unit 110 as an absorbent liquid.

In addition, as described above, the environmental treatment device 100 processes pollutants in the exhaust gas in the exhaust gas treatment unit 110 and processes contaminated water, which is an absorbent liquid contaminated during the treatment of the exhaust gas, in the wastewater treatment unit 120. (purified), and the treated treated water may be used as a second absorbent liquid for treating contaminants in the second exhaust gas, but is not limited thereto, and the environmental treatment device 100 may perform the above-described process and Conversely, for use in institutions and facilities that generate contaminated water such as wastewater rather than exhaust gas, the contaminated water is first treated in the wastewater treatment unit 120, and an absorption process is performed using the treated water. It may serve to purify or dehumidify air by removing dust and mist from institutions and facilities.

Below, we will briefly look at the operation flow of the present application based on the details described above.

Figure 4 is an operation flowchart of an environmental treatment method according to an embodiment of the present application.

The environmental treatment method shown in FIG. 4 may be performed by the environmental treatment device 100 described above. Therefore, even if the content is omitted below, the content described with respect to the environmental treatment device 100 can be equally applied to the description of the environmental treatment method.

Referring to FIG. 4, in step S11, the exhaust gas treatment unit 110 may process pollutants from exhaust gas using an absorbent liquid.

Next, in step S12, the sensor unit 140 can measure the gas properties of the exhaust gas.

Next, in step S13, the flow path unit 130 may discharge the contaminated water, which is an absorbent liquid contaminated in the exhaust gas treatment unit, into at least one of the plurality of treatment water tanks based on the measurement results of gas properties.

Next, in step S14, the wastewater treatment unit 120 may treat the contaminated water discharged to at least one of the plurality of treatment water tanks.

Next, in step S15, the flow path unit 130 may re-supply the treated water treated in the wastewater treatment unit 120 to the exhaust gas treatment unit 110.

Next, in step S16, the exhaust gas treatment unit 110 may treat contaminants from the second exhaust gas using the treated water as the second absorption liquid.

In the above description, steps S11 to S16 may be further divided into additional steps or combined into fewer steps, depending on the implementation of the present disclosure. Additionally, some steps may be omitted or the order between steps may be changed as needed.

The environmental treatment method according to an embodiment of the present application may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc., singly or in combination. Program instructions recorded on the medium may be specially designed and constructed for the present invention or may be known and usable by those skilled in the art of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks. -Includes optical media (magneto-optical media) and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, etc. Examples of program instructions include machine language code, such as that produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter, etc. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

Additionally, the above-described environmental processing method may also be implemented in the form of a computer program or application executed by a computer stored in a recording medium.

The description of the present application described above is for illustrative purposes, and those skilled in the art will understand that the present application can be easily modified into other specific forms without changing its technical idea or essential features. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. For example, each component described as unitary may be implemented in a distributed manner, and similarly, components described as distributed may also be implemented in a combined form.

The scope of the present application is indicated by the claims described below rather than the detailed description above, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present application.

10: Environmental treatment system
100: environmental treatment device
101: Plant department
102: Server section
110: Exhaust gas treatment unit
120: Wastewater treatment unit
130: Eurobu
140: sensor unit
150: Drug supply department
160: Judgment unit
170: Control unit
200: Network
300: Administrator terminal

Claims (10)

In the environmental treatment device,
An exhaust gas treatment unit that processes pollutants from exhaust gas using an absorbent liquid;
A sensor unit that measures gas properties of the exhaust gas;
a flow path unit that discharges contaminated water, which is a contaminated absorbent liquid from the exhaust gas treatment unit, into at least one of a plurality of treatment water tanks based on the measurement results of the gas properties;
a wastewater treatment unit including the plurality of treatment water tanks and treating the discharged contaminated water;
a determination unit that determines the state of the absorbent liquid to be used for processing the second exhaust gas, taking into account the properties of the second exhaust gas; and
A chemical supply unit that supplies a chemical that adjusts the pH of the treated water treated in the wastewater treatment unit according to the state of the absorbent liquid determined by the determination unit;
Including,
The euro section,
a discharge passage unit discharging the contaminated water from the exhaust gas treatment unit to the wastewater treatment unit; and
A supply passage unit that re-supplies the treated water treated in the wastewater treatment unit to the exhaust gas treatment unit,
Including,
The treated water is,
It includes first treated water, second treated water, and third treated water,
The supply flow department,
a first supply passage unit that maintains the pH of the first treated water treated in the wastewater treatment unit and supplies it to the exhaust gas treatment unit;
a second supply passage unit that increases the pH of the second treated water treated in the wastewater treatment unit and supplies it to the exhaust gas treatment unit; and
A third supply flow path unit that reduces the pH of the third treated water treated in the wastewater treatment unit and supplies it to the exhaust gas treatment unit,
It includes,
The drug supply department,
The pH of the first treated water is maintained by supplying a chemical that does not cause a change in pH or a chemical that is not supplied to the first supply passage, and a basic chemical is supplied to the second supply passage to perform the second treatment. The pH of the water is increased, and an acidic chemical is supplied to the third supply flow path to reduce the pH of the third treated water,
The supply flow department,
The treated water whose pH has been adjusted by the chemical supplied from the chemical supply unit is re-supplied to the exhaust gas treatment unit as a second absorption liquid,
The exhaust gas treatment unit,
An environmental treatment device that processes pollutants from the second exhaust gas using the second absorption liquid. According to paragraph 1,
A control unit that selectively controls the opening and closing of the flow path unit based on the measurement results of the sensor unit,
An environmental treatment device further comprising: delete delete According to paragraph 1,
The plurality of treatment tanks are,
It includes an aerobic tank, an anaerobic tank, and an anoxic tank,
The discharge passage part,
a first discharge passage unit discharging first contaminated water, which is a contaminated absorbent liquid from the exhaust gas treatment unit, into the aerobic tank;
a second discharge passage unit discharging second contaminated water, which is a contaminated absorbent liquid from the exhaust gas treatment unit, into the anaerobic tank; and
A third discharge flow path unit that discharges third contaminated water, which is a contaminated absorbent liquid from the exhaust gas treatment unit, into the anoxic tank;
An environmental treatment device comprising: According to paragraph 2,
The sensor unit,
An environmental treatment device that measures the gas properties, including the pH of the exhaust gas, and the condition of the treated water, including the pH of the treated water. According to clause 6,
The control unit,
An environmental treatment device that selectively controls opening and closing of the first supply flow path portion, the second supply flow path portion, and the third supply flow path portion based on the pH of the exhaust gas and the pH of the treated water. According to clause 6,
The control unit,
An environmental treatment device that adjusts the supply amounts of the basic chemical and the acidic chemical based on the pH of the exhaust gas and the pH of the treated water. According to paragraph 2,
The euro section,
Includes a flow control valve,
The sensor unit,
As the gas properties, the amount of the exhaust gas and the concentration of pollutants contained in the exhaust gas are measured,
The control unit,
An environmental treatment device that controls the amount of the second absorbent liquid by controlling the flow rate control valve based on the amount of the exhaust gas and the concentration of the pollutants. In an environmental treatment method performed by an environmental treatment device,
Processing, by an exhaust gas treatment unit, pollutants from exhaust gas using an absorbent liquid;
A sensor unit measuring gas properties of the exhaust gas;
Discharging, by a flow path unit, contaminated water, which is a contaminated absorbent liquid from the exhaust gas treatment unit, into at least one of a plurality of treatment water tanks based on the measurement results of the gas properties;
A wastewater treatment unit treating the discharged contaminated water;
determining, by a determination unit, the state of an absorbent liquid to be used for processing the second exhaust gas, taking into account the properties of the second exhaust gas;
supplying, by a chemical supply unit, a chemical that adjusts the pH of the water treated in the wastewater treatment unit according to the state of the absorbent liquid determined by the determination unit;
Resupplying, by the flow path unit, treated water treated in the step of treating the contaminated water and supplying the chemical to the exhaust gas treatment section; and
The exhaust gas treatment unit processes pollutants from the second exhaust gas using the treated water as a second absorbent liquid,
Including,
The treated water is,
It includes first treated water, second treated water, and third treated water,
The resupply step is,
The pH of the first treated water treated in the wastewater treatment unit is maintained and supplied to the exhaust gas treatment unit using the first supply flow passage, and the second treated water treated in the wastewater treatment unit is supplied using the second supply flow passage. The pH of the third treated water treated in the wastewater treatment unit is increased and supplied to the exhaust gas treatment unit, and the pH of the third treatment water treated in the wastewater treatment unit is reduced using the third supply flow path unit and supplied to the exhaust gas treatment unit,
The step of supplying the drug is,
The pH of the first treated water is maintained by supplying a chemical that does not cause a change in pH or a chemical that is not supplied to the first supply passage, and a basic chemical is supplied to the second supply passage to perform the second treatment. The pH of the water is increased, and an acidic chemical is supplied to the third supply flow path to reduce the pH of the third treated water,
The resupply step is,
An environmental treatment method, wherein the treated water whose pH has been adjusted by the chemical supplied in the step of supplying the chemical is re-supplied to the exhaust gas treatment unit as a second absorption liquid.

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