CN114772815B - Photovoltaic power generation sewage treatment integrated equipment and control method thereof - Google Patents

Photovoltaic power generation sewage treatment integrated equipment and control method thereof Download PDF

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Publication number
CN114772815B
CN114772815B CN202210503881.3A CN202210503881A CN114772815B CN 114772815 B CN114772815 B CN 114772815B CN 202210503881 A CN202210503881 A CN 202210503881A CN 114772815 B CN114772815 B CN 114772815B
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power generation
photovoltaic power
energy consumption
liquid level
power supply
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CN202210503881.3A
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CN114772815A (en
Inventor
秦雄
周艳
王涛
闵红平
汪小东
霍培书
汤丁丁
赵皇
程飞跃
刘成辉
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China Construction Third Bureau Green Industry Investment Co Ltd
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China Construction Third Bureau Green Industry Investment Co Ltd
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Priority to CN202210503881.3A priority Critical patent/CN114772815B/en
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Priority to PCT/CN2022/121637 priority patent/WO2023178969A1/en
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/009Apparatus with independent power supply, e.g. solar cells, windpower, fuel cells
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/42Liquid level
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/04Disinfection
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F7/00Aeration of stretches of water

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The invention discloses a photovoltaic power generation sewage treatment integrated device and a control method thereof, wherein the energy consumption part of the integrated device is divided into energy consumption systems in turn, and when the illumination intensity is strong, the photovoltaic power generation system is adopted for supplying power all the day; when the photovoltaic power generation system is weaker and the utility grid system supplies power normally, reasonably distributing the power supply proportion of the photovoltaic power generation system and the utility grid system according to the power supply quantity of the photovoltaic power generation system and different energy consumption systems; when the photovoltaic power generation system is weaker and the utility grid system is powered off, different power consumption system power supply sequences are selected according to the liquid level height of the regulating reservoir so as to realize ordered single power supply of the photovoltaic power generation system. By the mode, the cooperative control mode of the photovoltaic power generation system and the utility grid system under different working conditions such as sufficient illumination, insufficient illumination, power failure of the utility power and the like is provided, the operation efficiency of equipment is improved, and the operation energy consumption of the equipment is reduced.

Description

Photovoltaic power generation sewage treatment integrated equipment and control method thereof
Technical Field
The invention relates to the technical field of sewage treatment, in particular to photovoltaic power generation sewage treatment integrated equipment and a control method thereof.
Background
The integrated sewage treatment equipment is one of important infrastructure for rural decentralized sewage treatment and is closely related to the daily life of residents. The existing integrated sewage treatment equipment has the problems of high operation energy consumption, no standby power supply, incapability of operating the equipment after power failure, overflow of sewage and the like. With the strong promotion of new energy, solar energy is deeply favored by various industries due to the advantages of permanence, plot, economy, universality and the like. The solar power generation is utilized to provide partial power for the sewage treatment integrated equipment, so that the normal operation of a sewage treatment system in a special environment is ensured, the commercial power consumption is reduced to a certain extent, and the operation energy consumption of the sewage treatment integrated equipment is reduced.
The prior art provides an integrated low-temperature-resistant sewage treatment system, and the technology is characterized in that a photovoltaic power generation plate is arranged, direct current generated by photovoltaic power generation is converted into alternating current through a grid-connected inverter and then is stored in a national power grid, a storage battery is not needed for storage, and electricity is directly taken from the national power grid during use, so that the overall cost of the photovoltaic power generation system is reduced. However, this technology fails to supply power to the equipment when the utility power fails, resulting in the equipment failing to operate under utility power outage conditions, and the photovoltaic system has low connectivity with the wastewater treatment equipment.
The prior art also provides a photovoltaic power generation sewage treatment system based on the Internet of things, which converts solar energy into direct current through a photovoltaic module, the direct current is converged to a convergence box, then the direct current is converted into alternating current through an inverter, and the alternating current photovoltaic power is conveyed to a fan and a pump of the sewage treatment system through a current stabilizer. However, this technique does not guarantee the proper operation of the device when the illumination is weak.
Therefore, it is necessary to design a photovoltaic power generation sewage treatment integrated device and a control method thereof, wherein the photovoltaic power generation sewage treatment integrated device has low cost and low operation energy consumption, and can reasonably distribute power supply proportion under various complex working conditions such as power failure of a commercial power, weak illumination intensity and the like.
Disclosure of Invention
In order to overcome the problems, the invention provides the integrated equipment for the photovoltaic power generation and the sewage treatment and the control method thereof, which sequentially divide the energy consumption part of the integrated equipment into energy consumption systems and provide a cooperative control mode of the photovoltaic power generation system and a commercial power grid system under different working conditions such as sufficient illumination, insufficient illumination, power failure of commercial power and the like, thereby improving the operation efficiency of the equipment, reducing the operation energy consumption of the equipment and ensuring the smooth and safe sewage treatment.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a photovoltaic power generation sewage treatment integrated equipment, includes control system, is used for carrying the sewage of equalizing basin to sewage treatment integrated equipment's lifting system, aeration system, return system, dosing system, disinfection system and stirring system, lifting system, aeration system, return system, dosing system, disinfection system and stirring system are connected with photovoltaic power generation system and utility grid system electricity respectively to all be provided with control switch on each group's connecting wire, photovoltaic power generation system include the photovoltaic board and set up in illumination measuring apparatu on the photovoltaic board, be provided with level sensor in the equalizing basin, illumination measuring apparatu, level sensor and multiunit control switch all with control system signal connection.
Further, the control system comprises an instruction module, a storage module, a photovoltaic power generation amount monitoring module connected with the illumination measuring instrument in a signal mode, a commercial power monitoring module connected with the commercial power system in a signal mode, a liquid level judging module connected with the liquid level sensor in a signal mode, and a switch switching module connected with a plurality of groups of control switch signals respectively.
Further, the storage module stores standard electricity consumption of each energy consumption system of the lifting system, the aeration system, the reflux system, the dosing system, the disinfection system and the stirring system in one day, the instruction module is respectively and electrically connected with the storage module and the photovoltaic power generation monitoring module, so that the electricity consumption of the photovoltaic power generation system is respectively compared with the standard electricity consumption of each system in normal operation, and whether the photovoltaic power generation system at least meets the electricity consumption requirement of any one energy consumption system of the lifting system, the aeration system, the reflux system, the dosing system, the disinfection system and the stirring system is judged.
Further, the utility power monitoring module is electrically connected with the instruction module to monitor whether the utility power grid system supplies power normally or not and transmit a monitoring signal to the instruction module;
the liquid level judgment module is internally provided with a liquid level preset value so as to compare liquid level information of the regulating tank monitored by the liquid level sensor with the liquid level preset value.
Further, the switch switching module is internally provided with a power supply sequence of the two-stage energy consumption system and comprises a primary power supply sequence for sequentially carrying out single power supply on the lifting system, the aeration system, the reflux system, the dosing system, the disinfection system and the stirring system, and a secondary power supply sequence for sequentially carrying out single power supply on the aeration system, the reflux system, the dosing system, the disinfection system and the stirring system.
Further, the instruction module is respectively and electrically connected with the liquid level judging module and the switch switching module, so that the primary power supply sequence is adopted when the liquid level of the regulating tank exceeds a liquid level preset value, and the secondary power supply sequence is adopted when the liquid level of the regulating tank does not exceed the liquid level preset value.
A control method of the integrated equipment for photovoltaic power generation and sewage treatment adopts the integrated equipment for photovoltaic power generation and sewage treatment, and comprises the following steps:
s1, detecting the current illumination intensity and the working state of a commercial power grid system, and if the illumination intensity meets the power consumption of all energy consumption systems, adopting a photovoltaic power generation system to supply power all the day; if the illumination intensity does not meet the power consumption of all the energy consumption systems and the utility grid system supplies power normally, executing the step S2; if the illumination intensity does not meet the power consumption of all the energy consumption systems and the utility grid system is powered off, executing the step S3;
s2, comparing the power supply quantity of the photovoltaic power generation system with the standard power consumption quantity when each energy consumption system works normally, and if the photovoltaic power generation system is enough to maintain the power consumption of a single energy consumption system or a plurality of (not all) energy consumption systems, supplying power to the energy consumption systems by using the photovoltaic power generation system, and supplying power to the rest energy consumption systems by using a utility grid system; if the photovoltaic power generation system is insufficient to maintain the normal operation of any one energy consumption system, all the energy consumption systems are powered by a utility grid system;
and S3, powering each group of energy consumption systems according to the liquid level information of the regulating reservoir by adopting different power supply sequences.
Further, the energy consumption system comprises a lifting system, an aeration system, a reflux system, a dosing system, a disinfection system and a stirring system.
Further, in step S3, when the liquid level of the regulating tank exceeds the preset liquid level value, the photovoltaic power generation system sequentially supplies power to the lifting system, the aeration system, the reflux system, the dosing system, the disinfection system and the stirring system.
Further, in step S3, when the liquid level of the regulating tank does not exceed the preset liquid level value, the photovoltaic power generation system sequentially performs single power supply to the aeration system, the reflux system, the dosing system, the disinfection system and the stirring system.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the control method of the integrated equipment for photovoltaic power generation and sewage treatment, the energy consumption part of the integrated equipment is divided into the energy consumption systems in sequence. When the illumination intensity is strong enough, the photovoltaic power generation system is adopted for supplying power all the day. When the photovoltaic power generation system is weaker and the utility grid system supplies power normally, the power supply proportion of the photovoltaic power generation system and the utility grid system is reasonably distributed according to the power supply quantity of the photovoltaic power generation system and different energy consumption systems. When the photovoltaic power generation system is weaker and the utility grid system is powered off, different power consumption system power supply sequences are selected according to the liquid level height of the regulating reservoir so as to realize ordered single power supply of the photovoltaic power generation system. The invention can provide a cooperative control mode of the photovoltaic power generation system and the utility grid system under different working conditions such as sufficient illumination, insufficient illumination, power failure of the utility grid and the like, thereby improving the operation efficiency of the equipment and reducing the operation energy consumption of the equipment.
2. According to the integrated photovoltaic power generation sewage treatment equipment, the illumination measuring instrument is arranged on the photovoltaic power generation system, so that the current illumination intensity can be monitored in real time, and the power supply proportion of the photovoltaic power generation system to the utility grid system can be reasonably controlled according to the illumination intensity. Meanwhile, a liquid level sensor is arranged in the regulating tank, so that the sewage liquid level in the regulating tank can be monitored, and compared with a preset value, the sewage liquid level is further compared, whether the lifting system supplies power as a first priority is selected, and the overflow of sewage in the regulating tank is prevented, so that the normal sewage treatment work is influenced.
Drawings
FIG. 1 is a schematic structural view of the integrated photovoltaic power generation sewage treatment apparatus of the present invention;
FIG. 2 is a schematic structural view of a control system of the integrated photovoltaic power generation wastewater treatment plant of the present invention;
FIG. 3 is a schematic flow chart of a control method of the integrated photovoltaic power generation sewage treatment apparatus of the present invention;
the components in the drawings are marked as follows: 1. a liquid level sensor; 2. a control switch; 10. a control system; 11. an instruction module; 12. a storage module; 13. a photovoltaic power generation amount monitoring module; 14. a mains supply monitoring module; 15. a liquid level judging module; 16. a switch switching module; 20. a photovoltaic power generation system; 21. an illumination measuring instrument; 30. a utility grid system; 40. a lifting system; 50. an aeration system; 60. a reflow system; 70. a dosing system; 80. a disinfection system; 90. a stirring system.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
It should be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and/or processing steps closely related to aspects of the present invention are shown in the drawings, and other details not greatly related to the present invention are omitted.
In addition, it should be further noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Examples
As shown in fig. 1, a photovoltaic power generation sewage treatment integrated apparatus and a control method 100 thereof includes a control system 10, a lifting system 40 for lifting sewage of an adjusting tank to the sewage treatment integrated apparatus, an aeration system 50, a reflux system 60, a dosing system 70, a sterilizing system 80, and a stirring system 90. The lifting system 40, the aeration system 50, the reflux system 60, the dosing system 70, the disinfection system 80 and the stirring system 90 are all energy consumption systems of the integrated sewage treatment equipment, and the power consumption of each energy consumption system in normal working day is stored in the control system 10.
The lifting system 40, the aeration system 50, the reflux system 60, the dosing system 70, the disinfection system 80 and the stirring system 90 are respectively and electrically connected with the photovoltaic power generation system 20 and the utility grid system 30, and each group of connecting lines is provided with a control switch 2. The control switches 2 are arranged in a plurality of groups, and the control switches 2 which are in signal connection with the control system 10 are arranged between each energy consumption system and the photovoltaic power generation system 20 and between each energy consumption system and the utility grid system 30, and the control system 10 controls the on and off of each control switch 2, so as to control the on and off of circuits between each energy consumption system and the photovoltaic power generation system 20 and the utility grid system 30.
The photovoltaic power generation system 20 includes a photovoltaic panel, and an illumination measuring instrument 21 provided on the photovoltaic panel. The regulating tank is internally provided with a liquid level sensor 1, and an illumination measuring instrument 21, the liquid level sensor 1 and a plurality of groups of control switches 2 are all in signal connection with a control system 10. The illumination measuring instrument 21 can detect the current illumination intensity and transmit it to the control system 10, thereby calculating the power generation amount of the photovoltaic power generation system 20. The liquid level sensor 1 can monitor the sewage level in the regulating reservoir to compare the sewage level with a preset value, thereby selecting whether the lifting system 40 is powered as the first priority, preventing the sewage in the regulating reservoir from overflowing, and affecting the normal sewage treatment work.
By this arrangement, the energy consuming parts of the integrated device are divided into the individual energy consuming systems in sequence. The photovoltaic power generation system 20 is used to supply power throughout the day when the illumination intensity is strong. When the photovoltaic power generation system 20 is weak and the utility grid system 30 supplies power normally, the power supply ratio of the photovoltaic power generation system 20 to the utility grid system 30 is reasonably distributed according to different energy consumption systems according to the power supply amount of the photovoltaic power generation system 20. When the photovoltaic power generation system 20 is weak and the utility grid system 30 is powered off, different power consumption system power supply sequences are selected according to the liquid level height of the regulating reservoir so as to realize ordered single power supply of the photovoltaic power generation system 20. The invention can provide a cooperative control mode of the photovoltaic power generation system 20 and the utility grid system 30 under different working conditions such as sufficient illumination, insufficient illumination, power failure of the utility power and the like, thereby improving the operation efficiency of the equipment and reducing the operation energy consumption of the equipment.
As shown in fig. 1-2, in some embodiments, the control system 10 includes a command module 11, a storage module 12, a photovoltaic power generation amount monitoring module 13 in signal connection with an illumination measuring instrument 21, a utility power monitoring module 14 in signal connection with a utility power grid system 30, a liquid level judging module 15 in signal connection with a liquid level sensor 1, and a switch switching module 16 in signal connection with a plurality of groups of control switches 2, respectively.
Specifically, the storage module 12 stores standard electricity consumption for one day for each of the energy consumption systems of the lifting system 40, the aeration system 50, the return system 60, the dosing system 70, the sterilization system 80, and the agitation system 90 for convenient subsequent recall. The instruction module 11 is electrically connected with the storage module 12 and the photovoltaic power generation amount monitoring module 13 respectively, so as to compare the current power supply amount of the photovoltaic power generation system 20 with the standard power consumption amount when each system works normally, and judge whether the photovoltaic power generation system 20 at least meets the power consumption requirement of any one of the lifting system 40, the aeration system 50, the reflux system 60, the dosing system 70, the disinfection system 80 and the stirring system 90.
So configured, when the photovoltaic power generation system 20 is weak and the utility grid system 30 is supplying power normally, the photovoltaic power generation system 20 is sufficient to maintain the power consumption of a single energy consumption system or multiple (not all) energy consumption systems, then the photovoltaic power generation system 20 is used to supply power to the energy consumption systems, and the utility grid system 30 is used to supply power to the remaining energy consumption systems. When the photovoltaic power generation system 20 is insufficient to maintain normal operation of any one of the energy consumption systems, all of the energy consumption systems are powered by the utility grid system 30.
The utility power monitoring module 14 is electrically connected to the command module 11 to monitor whether the utility power system 30 is powered normally, and transmit a monitoring signal to the command module 11. The command module 11 reasonably selects the power supply mode of the energy consumption system according to the working state of the utility grid system 30.
The liquid level judgment module 15 is internally provided with a liquid level preset value so as to compare the liquid level information of the regulating tank monitored by the liquid level sensor 1 with the liquid level preset value, thereby selecting whether the lifting system 40 is used as the power supply of the first priority, and preventing sewage in the regulating tank from overflowing and affecting the normal sewage treatment work.
The switch-switching module 16 is built with a power supply sequence of two-stage power consumption systems and includes a primary power supply sequence for sequentially performing single power supply to the lifting system 40, the aeration system 50, the reflux system 60, the dosing system 70, the sterilizing system 80, and the stirring system 90, and a secondary power supply sequence for sequentially performing single power supply to the aeration system 50, the reflux system 60, the dosing system 70, the sterilizing system 80, and the stirring system 90. The single power supply mode refers to that when the lifting system 40 is powered, the rest energy consumption systems are kept in a power-off state, that is, only one group of energy consumption systems are powered at the same time.
The instruction module 11 is electrically connected with the liquid level judging module 15 and the switch switching module 16 respectively, so that a primary power supply sequence is adopted when the liquid level of the regulating tank exceeds a liquid level preset value, and a secondary power supply sequence is adopted when the liquid level of the regulating tank does not exceed the liquid level preset value. The power supply sequence of each energy consumption system is divided according to the importance degree of corresponding equipment in sewage treatment. Whereas the lifting system 40 is related to the level change of the regulating reservoir, which belongs to the most preferred level of power supply system.
As shown in fig. 3, a control method of a photovoltaic power generation sewage treatment integrated apparatus is provided, the adopted photovoltaic power generation sewage treatment integrated apparatus includes the following steps:
s1, detecting the current illumination intensity and the working state of a commercial power grid system 30, and if the illumination intensity meets the power consumption of all energy consumption systems, supplying power by adopting a photovoltaic power generation system 20 all the day; if the illumination intensity does not meet the power consumption of all the energy consumption systems and the utility grid system 30 supplies power normally, executing step S2; if the illumination intensity does not satisfy the power consumption of all the energy consumption systems and the utility grid system 30 is powered off, step S3 is executed.
In this step, the energy consumption system includes a lift system 40, an aeration system 50, a reflux system 60, a dosing system 70, a disinfection system 80, and a stirring system 90. Under the condition of good illumination conditions in summer, the illumination intensity can meet the power consumption of all energy consumption systems. Under the condition, the whole equipment is powered by the photovoltaic power generation system 20 all the day, and the investment of the photovoltaic panel and the energy storage system can be reduced by adopting a direct power supply mode, so that the investment cost of the whole equipment is reduced.
S2, comparing the power supply quantity of the photovoltaic power generation system 20 with the standard power consumption quantity when each energy consumption system works normally, and if the photovoltaic power generation system 20 is enough to maintain the power consumption of a single energy consumption system or a plurality of (not all) energy consumption systems, supplying power to the energy consumption systems by using the photovoltaic power generation system 20, and supplying power to the rest energy consumption systems by using the utility grid system 30; if the photovoltaic power generation system 20 is insufficient to maintain normal operation of any one of the energy consumption systems, all of the energy consumption systems are powered by the utility grid system 30.
In this step, the power supply ratio of the photovoltaic power generation system 20 to the utility grid system 30 is reasonably distributed according to the power supply amount of the photovoltaic power generation system 20 and different energy consumption systems, so that the photovoltaic power generation system 20 can be maximally utilized to supply power, the utility power supply is reduced, the utilization of renewable energy sources is truly combined with the sewage treatment integrated equipment, the power supply ratio is flexible and various, and the optimal selection can be performed according to different working conditions.
And S3, powering each group of energy consumption systems according to the liquid level information of the regulating reservoir by adopting different power supply sequences.
In this step, when the regulating reservoir liquid level exceeds the liquid level preset value, the photovoltaic power generation system 20 sequentially performs single power supply to the lifting system 40, the aeration system 50, the reflux system 60, the dosing system 70, the sterilization system 80, and the stirring system 90. The smooth operation of the single power supply is realized by controlling the opening and closing of the corresponding control switch 2 by the control system 10. When the regulating reservoir liquid level does not exceed the liquid level preset value, the photovoltaic power generation system 20 sequentially performs single power supply to the aeration system 50, the reflux system 60, the dosing system 70, the sterilization system 80, and the stirring system 90.
The foregoing is merely illustrative of the present invention and is not to be construed as limiting thereof; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; all equivalent structures or equivalent flow changes made by the specification and the attached drawings of the invention or directly or indirectly applied to other related technical fields are included in the protection scope of the invention.

Claims (7)

1. The integrated equipment for treating the sewage by photovoltaic power generation is characterized by comprising a control system (10), a lifting system (40) for lifting the sewage of an adjusting tank to the integrated equipment for treating the sewage, an aeration system (50), a reflux system (60), a dosing system (70), a disinfection system (80) and a stirring system (90), wherein the lifting system (40), the aeration system (50), the reflux system (60), the dosing system (70), the disinfection system (80) and the stirring system (90) are respectively and electrically connected with a photovoltaic power generation system (20) and a commercial power grid system (30), control switches (2) are arranged on all groups of connecting lines, the photovoltaic power generation system (20) comprises a photovoltaic panel and an illumination measuring instrument (21) arranged on the photovoltaic panel, a liquid level sensor (1) is arranged in the adjusting tank, and the illumination measuring instrument (21), the liquid level sensor (1) and a plurality of groups of control switches (2) are respectively connected with the control system (10) in a signal mode;
the control system (10) comprises an instruction module (11), a storage module (12), a photovoltaic power generation amount monitoring module (13) in signal connection with the illumination measuring instrument (21), a commercial power monitoring module (14) in signal connection with the commercial power grid system (30), a liquid level judging module (15) in signal connection with the liquid level sensor (1), and a switch switching module (16) in signal connection with a plurality of groups of control switches (2) respectively; the utility power monitoring module (14) is electrically connected with the instruction module (11) to monitor whether the utility power grid system (30) supplies power normally or not and transmit a monitoring signal to the instruction module (11);
the liquid level judgment module (15) is internally provided with a liquid level preset value so as to compare liquid level information of the regulating tank monitored by the liquid level sensor (1) with the liquid level preset value;
the switch switching module (16) is internally provided with a power supply sequence of a two-stage energy consumption system and comprises a primary power supply sequence for sequentially carrying out single power supply on the lifting system (40), the aeration system (50), the reflux system (60), the dosing system (70), the disinfection system (80) and the stirring system (90), and a secondary power supply sequence for sequentially carrying out single power supply on the aeration system (50), the reflux system (60), the dosing system (70), the disinfection system (80) and the stirring system (90).
2. The integrated equipment for photovoltaic power generation and sewage treatment according to claim 1, wherein the standard electricity consumption of each energy consumption system of the lifting system (40), the aeration system (50), the reflux system (60), the dosing system (70), the disinfection system (80) and the stirring system (90) is stored in the storage module (12), the instruction module (11) is electrically connected with the storage module (12) and the photovoltaic power generation amount monitoring module (13) respectively, so that the electricity consumption of the photovoltaic power generation system (20) is compared with the standard electricity consumption of each system in normal operation, and whether the photovoltaic power generation system (20) at least meets the electricity consumption requirement of any one energy consumption system of the lifting system (40), the aeration system (50), the reflux system (60), the dosing system (70), the disinfection system (80) and the stirring system (90) is judged.
3. The integrated photovoltaic power generation sewage treatment device according to claim 1, wherein the instruction module (11) is electrically connected with the liquid level judging module (15) and the switch switching module (16) respectively, so that the primary power supply sequence is adopted when the liquid level of the regulating tank exceeds a liquid level preset value, and the secondary power supply sequence is adopted when the liquid level of the regulating tank does not exceed the liquid level preset value.
4. A control method of the integrated photovoltaic power generation sewage treatment apparatus according to any one of claims 1 to 3, characterized by comprising the steps of:
s1, detecting the current illumination intensity and the working state of a commercial power grid system (30), and supplying power by using a photovoltaic power generation system (20) all the day if the illumination intensity meets the power consumption of all the energy consumption systems; if the illumination intensity does not meet the power consumption of all the energy consumption systems and the utility grid system (30) supplies power normally, executing the step S2; if the illumination intensity does not meet the power consumption of all the energy consumption systems and the utility grid system (30) is powered off, executing the step S3;
s2, comparing the power supply quantity of the photovoltaic power generation system (20) with the standard power consumption quantity when each energy consumption system works normally, and if the photovoltaic power generation system (20) is enough to maintain the power consumption of a single energy consumption system or a plurality of energy consumption systems, namely, not all the energy consumption systems, supplying power to the energy consumption systems by using the photovoltaic power generation system (20), and supplying power to the rest energy consumption systems by using a utility grid system (30); if the photovoltaic power generation system (20) is insufficient to maintain normal operation of any one energy consumption system, all the energy consumption systems are powered by a utility grid system (30);
and S3, powering each group of energy consumption systems according to the liquid level information of the regulating reservoir by adopting different power supply sequences.
5. The method of controlling a photovoltaic power generation sewage treatment integrated apparatus according to claim 4, wherein the energy consumption system comprises a lifting system (40), an aeration system (50), a reflux system (60), a dosing system (70), a disinfection system (80), and a stirring system (90).
6. The control method of the integrated photovoltaic power generation sewage treatment apparatus according to claim 5, wherein in step S3, when the regulating reservoir liquid level exceeds the liquid level preset value, the photovoltaic power generation system (20) sequentially performs single power supply to the lifting system (40), the aeration system (50), the reflux system (60), the dosing system (70), the disinfection system (80), and the stirring system (90) in this order.
7. The control method of the integrated photovoltaic power generation sewage treatment apparatus according to claim 5, wherein in step S3, when the regulating reservoir liquid level does not exceed the liquid level preset value, the photovoltaic power generation system (20) sequentially supplies power to the aeration system (50), the reflux system (60), the dosing system (70), the disinfection system (80), and the stirring system (90) singly in this order.
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