JP2004112950A - Power supply method to treatment facility - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power supply method to a treatment facility, capable of reducing an operation cost and the load on environment, for efficient operation. <P>SOLUTION: The total of watthours, generated by power generating facilities 21-23 using solar light, wind power, and wave power, is assumed to be a total watthour (a). The electric power required for operating a continuous operation treatment unit 3 of a treatment facility 1 is assumed to be (b). The electric power, required for operating an intermittent operation treatment unit 4, is assumed to be (c). The electric power required for an electric appliance 5, equipped to the facility, is assumed to be (d). In the day time, if a>b+c+d, the total electric energy (a) is supplied to the continuous operation treatment unit 3, the intermittent operation treatment unit 4, an electrical appliance 5, and an electric storage equipment 6. If b+d<a≤b+c+d, the total electric energy (a) is supplied to the continuous operation treatment unit 3 and the electrical appliance 5. If a≤b+d, the total electric energy (a) is supplied to the continuous operation treatment unit 3 and the electrical appliance 5 while complementary power is supplied to the continuous operation treatment unit 3 and the electrical appliance 5 from the power storage equipment 6. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for supplying power required for operation to a treatment facility such as a leachate treatment facility or a waste treatment facility.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, for example, in a leachate treatment facility, leachate in a landfill for final disposal of general waste and industrial waste is treated in a process as shown in FIG. That is, in the pretreatment / adjustment step A, removal of impurities in the leachate, adjustment of the amount and quality of the leachate, adjustment of the pH value, and the like are performed.
[0003]
Next, in the biological treatment step B, a BOD substance, a COD substance, nitrogen, and the like are removed by using an activated sludge method, a contact aeration method, or the like. Thereafter, in the physicochemical treatment step C, COD substances, chromatic components, heavy metals, and the like are removed using a coagulation sedimentation method, an ozone oxidation method, or the like, and discharged. In addition, the sludge generated from the above-described treatment steps A to C is concentrated, stored, dehydrated in the sludge treatment step D, and then disposed.
[0004]
The leachate treatment facility is provided with a pump, a blower, a sludge dewatering device, and the like that are operated when performing the above-described treatment steps A to D. Further, the leachate treatment facility has a building. , Indoor lighting and the like are provided.
[0005]
When treating leachate, the pump and blower are always operated continuously, the sludge dewatering device is operated intermittently several times a week only in the daytime, and the indoor lighting has workers stationed indoors. It is only lit during the day when working.
[0006]
However, in the above-described conventional type, all the electric power required to operate the pumps, blowers, or the respective motors (driving devices) of the sludge dewatering apparatus is supplied from a general electric power company. Therefore, there is a problem that the operating cost of the leachate treatment facility is increased, and there is a problem that the load on the environment is increased due to an increase in power demand and an increase in carbon dioxide emitted from the thermal power plant. .
[0007]
In addition, when leachate treatment facilities were installed on remote islands where the total amount of power generation was small, it was necessary to add new power generation facilities, which had a major effect on the local power supply plan.
Therefore, as a countermeasure against the above-described problem, it has been considered to supply electric power generated by the solar cell module to a leachate treatment facility (for example, see Patent Document 1).
[0008]
[Patent Document 1]
JP-A-11-33513
[Problems to be solved by the invention]
However, in the above-described conventional type, the amount of power generated by the solar cell module varies in various ways depending on time, weather, seasonal and other weather conditions, and the like. There is a problem that it has not been efficiently supplied to the processing facility.
[0010]
The present invention provides a power supply method that can reduce operating costs, reduce the load on the environment, and efficiently supply power to a processing facility in response to changes in the amount of power. The purpose is to:
[0011]
[Means for Solving the Problems]
In order to achieve the above object, in the first aspect of the present invention, a plurality of power generation facilities utilizing natural energy are used as a supply source, a processing facility is used as a supply destination, and the processing facility is used for a continuous operation which is always operated continuously. A processing device, a processing device for intermittent operation that is operated intermittently, an electric appliance attached to the facility, and a power storage facility, a method for supplying power from the power generation facility to the processing facility,
The total amount of power generated by the plurality of power generation facilities is defined as a total power amount a, the load power required to operate the continuous operation processing device is defined as b, and the intermittent operation processing device is required to operate. Assuming that the load power is c and the load power required for the electric appliance is d,
In the daytime,
{Circle around (1)} When a> b + c + d, the total electric energy a is supplied to the processing device for continuous operation, the processing device for intermittent operation, the electric appliance, and the power storage equipment;
{Circle around (2)} When b + d <a ≦ b + c + d, the total electric energy a is supplied to the continuous operation processing device and the electric appliance,
{Circle around (3)} When a ≦ b + d, the total electric power a is supplied to the continuous operation processing device and the electric appliance, and insufficient electric power is supplied from the power storage equipment to the continuous operation processing device and the electric appliance. Make up for it,
At night,
{Circle around (4)} When a> b, the total electric energy a is supplied to the continuous operation processing device,
{Circle around (5)} When a ≦ b, the total power a is supplied to the continuous operation processing device, and the insufficient power is supplied from the power storage equipment to the continuous operation processing device to make up for it.
According to the above (1) to (5), the power required for the processing facility is covered by the power obtained from the natural energy.
[0012]
According to this, since the treatment facility is operated using the electric power obtained from the natural energy, the operation cost can be reduced, and the load on the environment can be reduced.
[0013]
In the daytime, when the total amount of electric power a generated is the largest due to weather conditions or the like as in the above (1), the processing is performed by supplying power to the intermittent operation processing device and operating the intermittent operation processing device. The facility can be operated efficiently. Furthermore, in the case of the above (1), excess power is stored in the power storage equipment, so that there is no waste.
[0014]
Further, when the total electric energy a decreases as compared with the above (1) as in the above (2), power is supplied to the continuous operation processing device and the electric equipment attached to the facility, and the power storage equipment and the intermittent operation processing device are supplied. By stopping the power supply to the power supply, the minimum required operation of the continuous operation processing device and the operation of the electric appliance are secured. Note that the intermittent operation processing device does not need to be constantly operated, and may be operated when the total power a increases.
[0015]
In the daytime, even if the total amount of power a is insufficient as in (3) above, the insufficient power is supplied from the power storage equipment to the continuous operation processing device and the electric appliance to make up for it. Therefore, there is no hindrance to the operation of the continuous operation processing device and the electric appliance.
[0016]
Also, in the nighttime, most workers return to the processing facility after finishing their work, so there is no need to operate the above-mentioned electric appliances. Therefore, power is supplied only to the processing device for continuous operation, and the processing device for continuous operation is supplied. Only drive. At this time, the total power a is supplied to the continuous operation processing device.
[0017]
Also, even if the total power a is insufficient at night as in (5) above, the insufficient power is supplied from the power storage equipment to the processing device for continuous operation to make up for it. There is no problem in the operation of the processing equipment.
[0018]
As described above, power can be efficiently supplied to the processing facility in response to various changes in the total power amount a.
Further, in the second invention, as the plurality of power generation facilities, a photovoltaic power generation facility and another power generation facility utilizing natural energy other than sunlight are used.
[0019]
According to this, at night, power generation by the solar power generation facility is not performed, and the amount of power generated by the other power generation facility is the total power a, and the total power a is supplied to the continuous operation processing device. You. Further, by combining the solar power generation equipment and other power generation equipment, relatively stable power supply can be performed.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. Note that the same components as those described above are denoted by the same reference numerals and description thereof is omitted.
[0021]
Reference numeral 1 denotes a leachate treatment facility (an example of a treatment facility) that treats leachate at a final disposal site for landfills of general waste and industrial waste. The leachate is treated in the leachate treatment facility 1 by the pretreatment / adjustment step A, the biological treatment step B, and the physicochemical treatment step C. Further, the sludge generated from the steps A to C is treated in the sludge treatment step D. Processed by
[0022]
The leachate treatment facility 1 includes a continuous operation treatment device 3 that is always operated continuously when performing each of the processes A to C, and a daytime weekly only when performing the sludge treatment process D. An intermittent operation processing device 4 that is operated intermittently at a rate of about several times, an electric appliance 5 attached to the facility 1, and a power storage facility 6 are provided.
[0023]
The processing device 3 for continuous operation includes a pump 8 and a blower 9, each motor 10 for operating the pump 8 and the blower 9, and a power control panel to which the pump 8, the blower 9 and each motor 10 are connected. 11 is comprised.
[0024]
The intermittent operation processing device 4 includes a sludge dewatering device 12, a motor 13 for operating the sludge dewatering device 12, and a sludge dewatering device control panel 14 to which the sludge dewatering device 12 and the motor 13 are connected. It is configured.
[0025]
The electric appliance 5 includes an indoor lighting device 15 provided in a building and used only in the daytime, and a distribution board 16 to which the indoor lighting device 15 is connected.
[0026]
The power supply to the leachate treatment facility 1 is performed by a solar power generation facility 21, a wind power generation facility 22 (an example of another power generation facility), and a wave power generation facility 23 (another power generation facility) installed on the site of the treatment facility 1. An example) is performed. Hereinafter, a power supply system from each of the power generation facilities 21 to 23 to the leachate treatment facility 1 will be described.
[0027]
That is, the power transmission lines 25 to 27 from the power generation facilities 21 to 23 are combined into one power supply line 28. The supply side of the power supply line 28 is connected to the first to fourth branch lines 29 to 32 connected to the power control panel 11, the sludge dewatering apparatus control panel 14, the distribution board 16, and the power storage facility 6, respectively. And a power selling line 33 for selling surplus power to a power company.
[0028]
The power transmission lines 25 to 27 are provided with power meters 35 to 37 for measuring the amount of power generated by the power generation facilities 21 to 23, respectively. A switch 39 is provided on the fourth branch line 32 connected to the power storage facility 6.
[0029]
The power supply system is provided with a control device 40 that controls a power supply destination during the daytime and at nighttime based on the amount of power measured by the watt-hour meters 35 to 37. As the control device 40, a programmable controller or the like is used.
[0030]
Next, a method of supplying power to the leachate treatment facility 1 by the control device 40 will be described.
The sum of the power amounts measured by the watt-hour meters 35 to 37 is referred to as a total power amount a, the load power required to operate the continuous operation processing device 3 is referred to as b, and the intermittent operation processing device 4 is referred to as b. Let c be the load power required to operate, and d be the load power required to turn on the electric appliance 5.
(1) In the daytime, the power supply destination is controlled as shown in the following (1) to (3) (see FIG. 2).
{Circle around (1)} When a> b + c + d, the control device 40 controls the total electric power a so as to be supplied to the continuous operation processing device 3, the intermittent operation processing device 4, the electric appliance 5, and the power storage equipment 6. . At this time, the switch 39 is closed by a control signal from the control device 40.
{Circle around (2)} When b + d <a ≦ b + c + d, the control device 40 controls the total electric energy a to be supplied to the continuous operation processing device 3 and the electric appliance 5. At this time, the switch 39 is opened by a control signal from the control device 40.
{Circle around (3)} When a ≦ b + d, the control device 40 supplies the total electric energy a to the continuous operation processing device 3 and the electric appliance 5 and supplies insufficient power from the power storage equipment 6 to the continuous operation process. It controls so that it may be supplied to the device 3 and the electric appliance 5 to supplement it. At this time, the switch 39 is closed by a control signal from the control device 40.
(2) At night, the power supply destination is controlled as shown in the following (4) and (5) (see FIG. 2).
{Circle around (4)} When a> b, the control device 40 supplies the total electric energy a only to the processing device 3 for continuous operation. At this time, the switch 39 is opened by a control signal from the control device 40.
{Circle around (5)} When a ≦ b, the control device 40 supplies the total power a to the continuous operation processing device 3 and supplies insufficient power from the power storage facility 6 to the continuous operation processing device 3. Control to compensate. At this time, the switch 39 is closed by a control signal from the control device 40.
[0031]
Further, the control device 40 determines daytime and nighttime based on the time.
According to this, in the case of the above (1), the pump 8, the blower 9, and the motor 10 of the continuous operation processing device 3 operate, the sludge dewatering device 12 and the motor 13 of the intermittent operation processing device 4 operate, and the indoor lighting The appliance 15 lights up.
[0032]
In the above cases (2) and (3), the pump 8, the blower 9, and the motor 10 of the continuous operation processing device 3 are operated, and the indoor lighting fixture 15 is turned on.
In the above cases (4) and (5), the pump 8, the blower 9, and the motor 10 of the processing device 3 for continuous operation are operated.
[0033]
As shown in the above (1) to (5), since the leachate treatment facility 1 is operated using electric power obtained from natural energy such as sunlight, wind, and wave power, the operation cost can be reduced, and The burden on the environment can be reduced, such as a reduction in carbon dioxide emissions. In addition, by combining the solar power generation equipment 21, the wind power generation equipment 22, and the wave power generation equipment 23, stable power supply can be performed.
[0034]
In addition, when the daytime is fine, the amount of power generated by the photovoltaic power generation equipment 21 increases, so when the total power a is the largest as in the above (1), power is supplied to the intermittent operation processing device 4 to perform the intermittent operation. By operating the processing device 4 for processing, the processing facility 1 can be operated efficiently. In the case of the above (1), excess power is stored in the power storage equipment 6, and when there is more power, the surplus power is sold to the power company through the power selling line 33, so that there is no waste.
[0035]
Also, even in the daytime, when the total amount of electric power a is smaller than that in fine weather as described in (2) above due to cloudy weather or the like, the power is supplied to the continuous operation processing device 3 and the electric appliance 5, and the intermittent operation processing is performed. By stopping the power supply to the device 4 and the power storage equipment 6, the minimum required operation of the continuous operation processing device 3 and the operation of the electric appliance 5 (that is, the lighting of the indoor lighting fixture 15) are secured. You. Since the intermittent operation processing device 4 does not need to be constantly operated, it may be operated when the total power a increases (when the above condition (1) is satisfied).
[0036]
Also, in the daytime, even if the total power a is insufficient as described in (3) above, the insufficient power is supplied from the power storage equipment 6 to the continuous operation processing device 3 and the electric appliance 5. Therefore, there is no problem in the operation of the continuous operation processing device 3 and the electric appliance 5.
[0037]
Also, in the nighttime, most workers return to the processing facility 1 after finishing their work, so there is no need to turn on the indoor lighting fixtures 15. And only the processing device 3 for continuous operation is operated. At this time, power generation by the solar power generation facility 21 is not performed because it is nighttime, and the power generated by the wind power generation facility 22 and the wave power generation facility 23 is the total power a, and the total power a is continuously operated. Is supplied to the processing unit 3.
[0038]
Further, even if the total power amount a is insufficient as described in (5) above at night, the insufficient power is supplied from the power storage equipment 6 to the continuous operation processing device 3 to make up for it. There is no problem in the operation of the operation processing device 3.
[0039]
As described above, the power supply system enables the electric power to be efficiently supplied to the leachate treatment facility 1 in response to various changes in the total electric energy a.
In the above embodiment, the wind power generation equipment 22 and the wave power generation equipment 23 are used as examples of other power generation equipment, but only one of them may be used. Further, other than the wind power generation equipment 22 and the wave power generation equipment 23, for example, a geothermal power generation equipment or a solar thermal power generation equipment may be adopted. The wave power generation facility 23 is suitable for supplying power to the leachate treatment facility 1 constructed on a remote island or along the sea.
[0040]
In the above embodiment, the leachate treatment facility 1 is described as an example of the treatment facility, but may be a waste treatment facility. The leachate treatment facility 1 and the waste treatment facility are generally easily avoided as annoying facilities. However, by providing a solar power generation facility 21, a wind power generation facility 22, a wave power generation facility 23, and the like in such a treatment facility. In addition, a self-sustaining and environmentally friendly processing facility that does not require external power supply can be provided, and integration into the region can be achieved.
[0041]
In the above embodiment, the electric appliance 5 is constituted by the indoor lighting fixture 15 and the distribution board 16, but other than the indoor lighting fixture 15, an air conditioner or the like installed in a building may be used. .
[0042]
【The invention's effect】
As described above, according to the first aspect of the present invention, since the processing facility is operated using the electric power obtained from the natural energy, the operating cost can be reduced, and the load on the environment can be reduced.
[0043]
Also, in the daytime, when the total amount of power a generated is the largest as in (1) above, the processing facility is efficiently operated by supplying power to the intermittent operation processing apparatus and operating the intermittent operation processing apparatus. can do. Furthermore, in the case of the above (1), excess power is stored in the power storage equipment, so that there is no waste.
[0044]
Also, in the daytime, even in the event that the total amount of power a is insufficient as in (3) above, the insufficient power is supplied from the power storage equipment to the processing device for continuous operation and the electric appliances attached to the equipment. Therefore, there is no hindrance to the operation of the minimum required processing device for continuous operation and the electric appliance.
[0045]
Also, even if the total power amount a is insufficient at night as in (5) above, the insufficient power is supplied from the power storage equipment to the continuous operation processing device to make up for it. There is no problem in the operation of the processing equipment.
[0046]
In this way, it is possible to efficiently supply power to the processing facility in response to various changes in the total power amount a.
According to the second aspect of the present invention, a relatively stable power supply can be performed by combining the photovoltaic power generation equipment with other power generation equipment.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a power supply system of a leachate treatment facility according to an embodiment of the present invention.
FIG. 2 is a flowchart showing a method for supplying power to the leachate treatment facility.
FIG. 3 is a view showing a treatment process in a conventional leachate treatment facility.
[Explanation of symbols]
1 Leachate treatment facility (treatment facility)
3 Processing device for continuous operation 4 Processing device for intermittent operation 5 Electric equipment 6 Power storage equipment 21 Solar power generation equipment 22 Wind power generation equipment (other power generation equipment)
23 Wave power generation equipment (other power generation equipment)
a Total power b ~ d Load power

Claims (2)

A plurality of power generation facilities using natural energy are used as a supply source, and a processing facility is used as a supply destination. The processing facility includes a continuous operation processing device that is always operated continuously, and an intermittent operation process that is operated intermittently. An apparatus, an electric appliance attached to the facility, and a power storage facility, a method for supplying power from the power generation facility to the processing facility,
The total amount of power generated by the plurality of power generation facilities is defined as a total power amount a, the load power required to operate the continuous operation processing device is defined as b, and the intermittent operation processing device is required to operate. Assuming that the load power is c and the load power required for the electric appliance is d,
In the daytime,
{Circle around (1)} When a> b + c + d, the total electric energy a is supplied to the processing device for continuous operation, the processing device for intermittent operation, the electric appliance, and the power storage equipment;
{Circle around (2)} When b + d <a ≦ b + c + d, the total electric energy a is supplied to the continuous operation processing device and the electric appliance,
{Circle around (3)} When a ≦ b + d, the total electric power a is supplied to the continuous operation processing device and the electric appliance, and insufficient electric power is supplied from the power storage equipment to the continuous operation processing device and the electric appliance. Make up for it,
At night,
{Circle around (4)} When a> b, the total electric energy a is supplied to the continuous operation processing device,
{Circle around (5)} When a ≦ b, the total power a is supplied to the continuous operation processing device, and the insufficient power is supplied from the power storage equipment to the continuous operation processing device to make up for it.
According to the above (1) to (5), a power supply method for a processing facility, wherein power required for the processing facility is covered by power obtained from natural energy. 2. The method according to claim 1, wherein a plurality of power generation facilities include a photovoltaic power generation facility and another power generation facility utilizing natural energy other than sunlight.

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