JP7703422B2 - Water-saving performance reward calculation method and water-saving performance reward calculation system - Google Patents

Description

The present invention relates to a water-saving performance reward calculation method and a water-saving performance reward calculation system in an exhaust gas treatment facility that includes a wet exhaust gas treatment device that performs wet exhaust gas treatment and a wastewater treatment device. An example of an exhaust gas treatment facility to which the present invention can be applied is an exhaust gas treatment facility that includes a wet electrostatic precipitator that performs exhaust gas treatment and a wastewater treatment device that converts wash water used in exhaust gas treatment into treated wastewater that can be discharged into a sewer system.

In industrial processes that consume large amounts of industrial water, such as the exhaust gas treatment equipment mentioned above, the demand for water conservation has been increasing in recent years. For this reason, various water-saving technologies have been developed for many exhaust gas treatment equipment. For example, a technology has been disclosed that reduces the amount of industrial water used by changing the flow path of the cleaning water within the equipment so that part of the treated wastewater can be repeatedly used as cleaning water in the exhaust gas treatment equipment (see Patent Document 1).

However, because the introduction of the latest water-saving technologies entails high implementation costs, in order to widely disseminate water-saving technologies, it would be desirable to have a mechanism for fairly distributing the benefits of introducing new equipment using water-saving technologies by sharing the results of water-saving achieved through the introduction of such equipment as objective numerical data between the supplier and the demand (user) of the equipment.

JP 2000-107636 A

The present invention aims to provide a technical means that enables the benefits of introducing new equipment using water-saving technology to be shared fairly by both the supplier and the demand (user) of the equipment, by sharing the water-saving results obtained through the introduction of the new equipment as objective numerical data.

The inventors have found that the above problems can be solved by the following methods, systems, etc., and have completed the present invention. Specifically, the present invention provides the following:

(1) A water-saving performance reward calculation method for an exhaust gas treatment facility that includes a wet exhaust gas treatment device and a wastewater treatment device that converts wash water used in exhaust gas treatment into treated wastewater that can be discharged into a sewer system, and that repeatedly uses a portion of the treated wastewater as reused wash water in the wet exhaust gas treatment device, the water-saving performance reward calculation method including: a reused wash water amount measurement step that measures the amount of the reused wash water per unit time using a reused wash water amount measurement device; and a water-saving performance reward calculation step that performs an arithmetic process to multiply the amount of the reused wash water per unit time by a predetermined coefficient using a water-saving performance reward calculation means to calculate a water-saving performance reward amount.

According to the water-saving performance reward calculation method in (1), in an exhaust gas treatment facility where a portion of treated wastewater is repeatedly used in a wet exhaust gas treatment device as reused cleaning water, the benefits of introducing new equipment using water-saving technology can be shared fairly by both the supplier and the demand (user) of the equipment by sharing the water-saving results as objective numerical data.

(2) The water-saving performance reward calculation method described in (1), in which the exhaust gas treatment equipment includes a wash water tank that temporarily stores the replenishment wash water replenished from outside the equipment and the reused wash water, stores mixed wash water that is a mixture of the replenishment wash water and the reused wash water, and supplies the mixed wash water to the wet exhaust gas treatment equipment, and in the reused wash water amount measurement step, the total amount of the reused wash water per unit time is measured by a single reused wash water amount measurement device that is installed in a position where the total amount of the reused wash water injected into the wash water tank can be measured.

According to the water-saving performance reward calculation method of (2), even in exhaust gas treatment equipment with a complex flow path configuration, by placing a single reused wash water volume measuring device at an appropriate specific location, it is possible to easily and accurately measure the total amount of reused wash water in the water-saving performance reward calculation method described in (1).

(3) The water-saving performance reward calculation method described in (1) or (2), in which the predetermined coefficient is the product of the usage fee per unit water volume of the sewerage system and a predetermined profit distribution rate.

According to the water-saving performance reward calculation method of (3), even in exhaust gas treatment equipment with a complex flow path configuration, the economic results of the reduction in sewerage usage fees can be accurately evaluated in a manner that reduces the workload by using the water-saving performance reward calculation method described in (1) or (2).

(4) A program for calculating a water-saving performance reward in the water-saving performance reward calculation method described in any one of (1) to (3), which causes a calculation processing unit to execute the water-saving performance reward calculation step.

According to the program for the water-saving performance reward calculation method in (4), in an exhaust gas treatment facility where a portion of treated wastewater is repeatedly used as reused cleaning water in a wet exhaust gas treatment device, the benefits of introducing new equipment using water-saving technology can be shared as objective numerical data between the supplier and the demand (user) of the equipment, thereby allowing the benefits of introducing the new equipment to be distributed fairly.

(5) A water-saving performance reward calculation system for an exhaust gas treatment facility that includes a wet exhaust gas treatment device and a wastewater treatment device that converts cleaning water used in the exhaust gas treatment into treated wastewater that can be discharged into a sewer system, and that repeatedly uses a portion of the treated wastewater as reused cleaning water in the wet exhaust gas treatment device, the water-saving performance reward calculation system including a reused cleaning water volume measurement device and a water-saving performance reward calculation means, the water-saving performance reward calculation means calculating a water-saving performance reward amount by performing an arithmetic process of multiplying the volume of the reused cleaning water per unit time measured by the reused cleaning water volume measurement device by a predetermined coefficient.

According to the water-saving performance reward calculation system in (5), in an exhaust gas treatment facility where a portion of treated wastewater is repeatedly used as reused cleaning water in a wet exhaust gas treatment device, the benefits of introducing new equipment using water-saving technology can be shared as objective numerical data between the supplier and the demand (user) of the equipment, thereby allowing the benefits of introducing the new equipment to be distributed fairly.

(6) The water-saving performance reward calculation system described in (5), in which the exhaust gas treatment equipment includes a wash water tank that temporarily stores the refill wash water replenished from outside the equipment and the reused wash water, stores mixed wash water that is a mixture of the refill wash water and the reused wash water, and supplies the mixed wash water to the wet exhaust gas treatment equipment, and the reused wash water volume measurement device is composed of a single water volume measurement device installed in a position where the total volume of the reused wash water injected into the wash water tank can be measured.

According to the water-saving performance reward calculation system of (6), even in exhaust gas treatment equipment with a complex flow path configuration, by placing a single reused wash water volume measuring device at an appropriate specific location, the total amount of reused wash water in the water-saving performance reward calculation system described in (5) can be measured easily and accurately.

(7) The water-saving performance reward calculation system according to (5) or (6), in which the water-saving performance reward calculation means is communicatively connected to the reused wash water volume measuring device via a wired or wireless electric communication line and is disposed in another facility separate from the exhaust gas treatment facility.

According to the water-saving performance-based reward calculation system of (7), in the water-saving performance-based reward calculation system described in (5) or (6), for example, the measurement of the water-saving effect and the calculation of the performance reward in an exhaust gas treatment facility located in a remote location can be performed within the facility of the supplier of the exhaust gas treatment facility. In addition, the measurement of the water-saving effect and the calculation of the performance reward in multiple exhaust gas treatment facilities can be performed efficiently in a single management facility.

(8) The water-saving performance reward calculation system according to any one of (5) to (7), wherein the wet-type exhaust gas treatment device is a composite exhaust gas treatment device in which multiple exhaust gas treatment devices, including at least a wet-type electrostatic precipitator, are arranged in series.

According to the water-saving performance reward calculation system of (8), in an exhaust gas treatment facility that includes a wet-type electrostatic precipitator, which is an industrial facility that consumes a large amount of washing water and for which the spread of water-saving equipment configurations is particularly desired, the above-mentioned effects of the water-saving performance reward calculation system described in any one of (5) to (7) can be enjoyed, and the spread of water-saving exhaust gas treatment facilities can be promoted.

By sharing the water-saving results achieved through the introduction of new equipment using water-saving technology as objective numerical data between the supplier and the demand (user) of the equipment, the benefits of introducing the new equipment can be distributed fairly. This will promote the introduction of water-saving exhaust gas treatment equipment.

1 is a block diagram showing a configuration of a water-saving performance reward calculation system according to the present invention. FIG. 2 is a flow chart showing the flow of a water-saving performance reward calculation method according to the present invention. 1 is a schematic diagram showing a configuration of an exhaust gas treatment facility which is a preferred example of an application of the present invention.

The best mode for carrying out the present invention will be explained below with reference to the drawings as appropriate.

<Exhaust gas treatment equipment>
FIG. 3 is a schematic diagram showing the configuration of an exhaust gas treatment facility 2, which is an example of an exhaust gas treatment facility to which the "water-saving performance reward calculation system in an exhaust gas treatment facility (hereinafter, also simply referred to as the "water-saving performance reward calculation system")" or the "water-saving performance reward calculation method in an exhaust gas treatment facility (hereinafter, also simply referred to as the "water-saving performance reward calculation method")" of the present invention is preferably applied.

As shown in FIG. 3, the exhaust gas treatment facility 2, which is a preferred application of the water-saving performance reward calculation system 1 or the water-saving performance reward calculation method of the present invention, is an industrial facility equipped with a wet exhaust gas treatment device 21 and a wastewater treatment device 22.

The wet exhaust gas treatment device 21 is configured to include at least a wet electric dust collector (EP) 211 (211A, 211B, 211C). The exhaust gas treatment device 21 may also be a composite exhaust gas treatment device in which a plurality of exhaust gas treatment devices, such as a scrubber 212 (212A, 212B, 212C) and a humidifier (not shown), are arranged in series. As described above, the overall configuration of the wet exhaust gas treatment device 21 is not particularly limited as long as it includes the wet electric dust collector (EP) 211. As an example, as shown in FIG. 3, the wet exhaust gas treatment device 21 may be configured to include a plurality of wet exhaust gas treatment devices 21A, 21B, 21C arranged in parallel.

The wastewater treatment device 22 is a device that performs wastewater treatment to convert the cleaning water used for exhaust gas treatment in the wet exhaust gas treatment device 21 into treated wastewater that can be discharged into the sewer system. The treated wastewater is stored in a treated wastewater tank 23, a portion of which is discharged into the sewer system, and the other portion is sent to a cleaning water tank 24 for use as reused cleaning water.

As shown in FIG. 3, the exhaust gas treatment equipment 2 is equipped with a cleaning water tank 24 that temporarily stores the replenishment cleaning water and the repeated cleaning water replenished from outside the equipment, and discharges mixed cleaning water, which is a mixture of the replenishment cleaning water and the reused cleaning water, at a predetermined amount per unit time to the wet exhaust gas treatment equipment 21. This mixed cleaning water is mainly supplied to the wet electric dust collector (EP) 211 and other components that make up the wet exhaust gas treatment equipment 21.

By applying the "water-saving performance reward calculation system" or "water-saving performance reward calculation method" of the present invention to an exhaust gas treatment facility 2 that includes the above-mentioned wet exhaust gas treatment facility 21 and wastewater treatment facility 22, and in which a portion of the treated wastewater is repeatedly used as reused cleaning water in the wet exhaust gas treatment facility 21, it becomes possible to automatically obtain the water-saving results obtained by introducing new equipment that uses water-saving technology as objective numerical data ("water-saving performance reward amount").

In this specification, the "water-saving performance reward amount" refers to a specified percentage of the profit generated by reducing the amount of water used by reusing a portion of the treated wastewater as reused cleaning water in an exhaust gas treatment facility configured as described above, and refers to the reward amount distributed to the supplier of the exhaust gas treatment facility as a water-saving performance reward. The specified percentage may be determined in advance at any rate based on an agreement or contract between the supplier of the facility and the consumer (user) of the facility.

In the above-mentioned exhaust gas treatment facility, a large portion of the large amount of washing water used in the exhaust gas treatment is discharged into the sewer as treated wastewater that can be discharged. And there is currently no means of objectively evaluating how much sewerage fees can actually be saved by changing the equipment configuration for water saving as described above without requiring excessive monitoring burden. In the series of business transactions related to exhaust gas treatment, the economic effect of saving on sewerage fees is overlooked without being accurately evaluated at any stage of the business. In contrast, as will be described in detail later, according to the present invention, the "water saving achievement reward amount" can be evaluated as the amount of savings in sewerage fees. As a result, the amount of reduction in sewerage fees that was overlooked without being accurately evaluated at any stage of the business can be accurately evaluated with little monitoring burden.

<Water conservation performance reward calculation system>
FIG. 1 is a block diagram showing the configuration of a water-saving performance-based reward calculation system 1, which is an example of the "water-saving performance-based reward calculation system" of the present invention.

[Overall configuration]
1, the water-saving performance reward calculation system 1 includes a reuse flush water volume measuring device 11 and a calculation processing unit 12. The calculation processing unit 12 includes a water-saving performance reward calculation means 121.

[Recycled washing water volume measuring device]
The reuse wash water volume measuring device 11 can be composed of various water volume measuring devices capable of measuring the volume of reuse wash water per unit time in the exhaust gas treatment facility 2. It is preferable that the device has a function of outputting data relating to the measured volume of reuse wash water to the calculation processing unit 12 as numerical data in digital format.

As long as the reused flush water volume measuring device 11 can measure the volume of reused flush water per unit time, an existing water volume meter or the like can be used as it is as a device constituting the water-saving performance reward calculation system 1. However, if there is a flush water tank 24 in which all flush water is temporarily stored, it is more preferable that the reused flush water volume measuring device 11 is configured in such a manner that a single water volume measuring device is installed in a position where the total volume of reused flush water injected into the tank can be measured in one place, specifically, as shown in FIG. 3, immediately adjacent to the inlet for reused flush water to the flush water tank 24. This makes it possible to more easily and accurately measure the total volume of reused flush water.

[Calculation processing unit]
The calculation processing unit 12 performs a calculation process in which the amount of reused flush water per unit time output from the reused flush water amount measuring device 11 is used as an input value, and a "water-saving performance reward amount" is calculated as an output value.

The calculation processing unit 12 is connected to the reused wash water volume measuring device 11 so as to receive numerical data relating to the volume of reused wash water from the reused wash water volume measuring device 11. This connection can be a wired connection using a dedicated communication cable, a connection by wired LAN, or a connection using various wireless communication such as wireless LAN, short-range wireless communication, or a mobile phone line. The calculation processing unit 12 can be placed in the work area of the exhaust gas treatment equipment supplier, or in another remote location as necessary, away from the reused wash water volume measuring device 11, by connecting the two so that they can communicate with each other via a wired or wireless electrical communication line, without being placed near the reused wash water volume measuring device 11.

The calculation processing unit 12 can be configured using, for example, a personal computer, a tablet terminal, a smartphone, etc. Alternatively, the calculation processing unit 12 can be configured as a dedicated device specialized for the operations related to the implementation of the present invention. The calculation processing unit 12 can also be configured as an information processing device having the above functions configured as a server on the cloud and shared by a large number of clients, so that the above-mentioned water-saving effect measurement and the calculation of the performance reward in a large number of exhaust gas treatment facilities can be efficiently performed in a single management facility.

In any of the above configurations, the calculation processing unit 12 includes hardware such as a CPU, memory, and a communication unit. In the calculation processing unit 12 configured in this way, the "program for calculating water-saving performance rewards," which is a computer program according to the present invention, can be executed to specifically perform the various operations described below and the method for calculating water-saving performance rewards in an exhaust gas treatment facility.

(Water saving performance reward calculation method)
The water-saving performance reward calculation means 121 calculates the water-saving performance reward amount by performing an arithmetic process of multiplying the amount of reused flush water per unit time measured by the reused flush water amount measuring device 11 by a predetermined coefficient. Since the amount of reused flush water per unit time is essentially the amount of wastewater discharged into the sewer, the water-saving performance reward amount can be calculated by multiplying the "recycled flush water per unit time" by the "predetermined coefficient" which is the product of the sewerage usage fee per unit water amount and a predetermined profit allocation rate, as shown in Table 1 below, for example.

<Water saving performance reward calculation method>
The "water-saving performance reward calculation method" of the present invention is preferably a process that can be executed by using the "water-saving performance reward calculation system for exhaust gas treatment equipment" of the present invention described above. As shown in Figure 2, this "water-saving performance reward calculation method" is executed as an overall process including each of a reused flush water volume measurement step ST1 that can be executed in the reused flush water volume measurement device 11 and a water-saving performance reward calculation step ST2 that can be executed in the water-saving performance reward calculation means 121, by sequentially executing these processes.

(Recycled washing water volume measurement step)
The reused wash water volume measuring step ST1 is a process for measuring the volume of reused wash water per unit time by the reused wash water volume measuring device 11. "Reused wash water" refers to wash water that is a part of treated wastewater and is repeatedly used as a wash water in the wet-type exhaust gas treatment device 21, and is supplied via a wash water tank 24 to the wet-type electric dust collector 211 and the like that constitute the wet-type exhaust gas treatment device 21 together with replenishment wash water supplied from outside the facility.

(Water saving reward calculation step)
The water-saving performance reward calculation step ST2 is a process in which the water-saving performance reward calculation means 121 performs an arithmetic process of multiplying the "volume of recycled flush water per unit time" measured by the recycled flush water volume measuring device 11 by a predetermined coefficient consisting of a predetermined unit water volume sewerage usage fee, a predetermined profit allocation rate, etc., as described above, to calculate the water-saving performance reward amount.

After executing the water-saving performance reward calculation step ST2, the calculation processing unit 12 judges whether or not to end the execution of the water-saving performance reward calculation method. For example, it is judged to have ended when a command to end processing is input. If it has ended, the execution of the water-saving performance reward calculation method ends, and if not, it returns to the reused flush water volume measurement step ST1 and continues the execution of the water-saving performance reward calculation method.

REFERENCE SIGNS LIST 1 Water-saving performance reward calculation system 11 Recycled washing water volume measuring device 12 Calculation processing unit 121 Water-saving performance reward calculation means 2 Exhaust gas treatment equipment 21 (21A, 21B, 21C) Wet exhaust gas treatment device 211 (211A, 211B, 211C) Electrostatic precipitator (EP)
212 (212A, 212B, 212C) Scrubber 22 Wastewater treatment device 23 Wastewater tank 24 Wash water tank ST1 Recycled wash water amount measurement step ST2 Water saving performance reward calculation step

Claims (7)

A method for calculating a water-saving performance reward in an exhaust gas treatment facility, comprising: a wet exhaust gas treatment device; and a wastewater treatment device that converts wash water used in the exhaust gas treatment into treated wastewater that can be discharged into a sewer system, and in which a portion of the treated wastewater is repeatedly used in the wet exhaust gas treatment device as reused wash water,
a reused cleaning water amount measuring step of measuring the amount of the reused cleaning water per unit time by a reused cleaning water amount measuring device;
a water-saving performance reward calculation step of performing a calculation process of multiplying the amount of the reused flush water per unit time by a predetermined coefficient using a water-saving performance reward calculation means to calculate a water-saving performance reward amount;
In the water-saving performance reward calculation method comprising:
causing a calculation processing unit to execute the water-saving performance reward calculation step;
A program for calculating water-saving performance rewards . the exhaust gas treatment equipment includes a cleaning water tank having a function of temporarily storing replenishment cleaning water replenished from outside the equipment and the reused cleaning water, storing mixed cleaning water which is a mixture of the replenishment cleaning water and the reused cleaning water, and supplying the mixed cleaning water to the wet type exhaust gas treatment equipment;
2. A program for calculating a water-saving performance reward as described in claim 1, wherein in the reused flush water volume measurement step, the total volume of the reused flush water per unit time is measured by a single reused flush water volume measurement device installed in a position where the total volume of the reused flush water injected into the flush water tank can be measured. The predetermined coefficient is a product of the usage fee per unit water volume of the sewerage system and a predetermined profit sharing ratio.
A program for calculating a water-saving performance reward according to claim 1 or 2. A water-saving performance reward calculation system for an exhaust gas treatment facility, comprising a wet exhaust gas treatment device and a wastewater treatment device that converts washing water used in the exhaust gas treatment into treated wastewater that can be discharged into a sewerage system, and in which a part of the treated wastewater is repeatedly used as reused washing water in the wet exhaust gas treatment device,
A reused washing water volume measuring device;
A water-saving performance reward calculation means is provided,
The water-saving performance reward calculation means
A calculation process is performed to multiply the amount of the reused flush water per unit time measured by the reused flush water amount measuring device by a predetermined coefficient to calculate a water-saving performance reward amount.
Water saving performance reward calculation system. the exhaust gas treatment equipment includes a cleaning water tank having a function of temporarily storing replenishment cleaning water replenished from outside the equipment and the reused cleaning water, storing mixed cleaning water which is a mixture of the replenishment cleaning water and the reused cleaning water, and supplying the mixed cleaning water to the wet type exhaust gas treatment equipment;
The reuse flush water volume measuring device is composed of a single water volume measuring device installed at a position where the total volume of the reuse flush water injected into the flush water tank can be measured.
The water-saving performance reward calculation system according to claim 4 . The water-saving performance reward calculation means is communicatively connected to the reused flush water amount measuring device by a wired or wireless electric communication line, and is disposed in another facility separate from the exhaust gas treatment facility.
The water-saving performance reward calculation system according to claim 4 or 5 . The wet type exhaust gas treatment device is a composite exhaust gas treatment device having a plurality of exhaust gas treatment devices including at least a wet type electric dust collector arranged in series.
7. The water-saving performance reward calculation system according to claim 4 .

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