CN114020080A - Micro-nano air entrainment-based automatic rice field irrigation and drainage system and method - Google Patents
Micro-nano air entrainment-based automatic rice field irrigation and drainage system and method Download PDFInfo
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- CN114020080A CN114020080A CN202111300076.2A CN202111300076A CN114020080A CN 114020080 A CN114020080 A CN 114020080A CN 202111300076 A CN202111300076 A CN 202111300076A CN 114020080 A CN114020080 A CN 114020080A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/16—Control of watering
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention discloses a micro-nano air entrainment-based automatic rice field irrigation and drainage system, which comprises a water pump and a micro-nano bubble generator, wherein a water inlet of the water pump is communicated with an irrigation water source through a first pipeline, a water outlet of the water pump is communicated with a water inlet of the micro-nano bubble generator through a second pipeline, and a water outlet of the micro-nano bubble generator is communicated to a rice field to be irrigated through a third pipeline; and a dissolved oxygen sensor is arranged in the third pipeline, a first electromagnetic valve is arranged on the third pipeline, and the dissolved oxygen sensor and the first electromagnetic valve are respectively connected with the first programmable controller. A method for automatically irrigating and draining rice fields based on micro-nano air entrainment comprises the steps of starting a water pump and a micro-nano bubble generator, pumping irrigation water from a water source into the micro-nano bubble generator, injecting water pumped into the micro-nano bubble generator into micro-nano bubbles, and injecting water flowing out of the micro-nano bubble generator into the rice fields to be irrigated. The invention can avoid the water quality deterioration phenomenon of the rice field after the wheat straws are returned to the field in the rice and wheat rotation area.
Description
Technical Field
The invention relates to the technical field of irrigation equipment, in particular to a micro-nano air-entrapping-based automatic rice field irrigation and drainage system and method.
Background
The straw returning is an agricultural measure widely popularized and applied in recent years, and has important significance for cultivating land fertility, improving crop quality and yield and the like. However, under the rice and wheat rotation cultivation mode in the rice planting area in south China, the wheat straws are returned to the field, so that new problems of rice irrigation management are brought, for example, COD (chemical oxygen demand) and BOD (biochemical oxygen demand) in field water are increased due to the increase of the organic matter content of soil, and the field water quality is deteriorated. The reason is that in the rice field flooding process of the rice and wheat rotation area, the wheat straws are naturally decomposed in the water environment and emit substances such as nitrogen, phosphorus, organic matters and the like, so that an important component part of agricultural non-point source pollution is formed, and meanwhile, ammonia volatilization is carried out on ammonium nitrogen decomposed from the straws, and malodorous gases such as ammonia gas and the like are generated. In addition, in the flooding process, the straws are in an anaerobic environment, substances in soil mainly undergo a reduction reaction, the concentration of water-soluble ferrous ions is increased, the oxygen content and the oxidation-reduction potential in the soil are lowered, and the crop growth is easily damaged.
Disclosure of Invention
The invention aims to provide a micro-nano air-entrapping-based automatic irrigation and drainage system and method for a rice field, which are used for solving the problems in the prior art and avoiding the phenomenon that the water quality of the rice field is deteriorated and the rice is damaged due to the growth of the rice after wheat straws are returned to the field in a rice and wheat rotation area.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a micro-nano air entrainment-based automatic irrigation and drainage system for a rice field, which comprises a water pump and a micro-nano bubble generator, wherein a water inlet of the water pump is communicated with an irrigation water source through a first pipeline, a water outlet of the water pump is communicated with a water inlet of the micro-nano bubble generator through a second pipeline, and a water outlet of the micro-nano bubble generator is communicated to the rice field to be irrigated through a third pipeline; a dissolved oxygen sensor is arranged in the third pipeline, and a first electromagnetic valve is arranged on the third pipeline; the third pipeline is communicated with the irrigation water source through a sixth pipeline, a fourth electromagnetic valve is arranged on the sixth pipeline, a connecting port of the sixth pipeline and the third pipeline is located between a water outlet of the micro-nano bubble generator and the first electromagnetic valve, and the dissolved oxygen sensor, the first electromagnetic valve and the fourth electromagnetic valve are respectively connected with a first programmable controller.
Preferably, the ecological drainage ditch is further included; and the rice field to be irrigated is communicated with the water inlet of the ecological drainage ditch through a fourth pipeline.
Preferably, a first water quality monitoring sensor and a first water level sensor are arranged in the rice field to be irrigated, the first water quality monitoring sensor is connected with a second programmable controller, and the first water level sensor, the water pump and the micro-nano bubble generator are respectively connected with a third programmable controller; and a second electromagnetic valve is arranged on the fourth pipeline, the second programmable controller and the third programmable controller are respectively connected with the second electromagnetic valve, and the second programmable controller and the third programmable controller are respectively connected with the first electromagnetic valve.
Preferably, the ecological water-saving device further comprises a digestion tank, wherein a water outlet of the ecological water drainage ditch, a water inlet of the irrigation water source and a water inlet of the digestion tank are communicated with a three-way electromagnetic valve through pipelines, and adsorption substances are arranged in the digestion tank.
Preferably, a second water quality monitoring sensor and a second water level sensor are arranged in the ecological drainage ditch, the second water quality monitoring sensor is connected with a fourth programmable controller, the second water level sensor is connected with a fifth programmable controller, and the fourth programmable controller and the fifth programmable controller are respectively connected with the three-way electromagnetic valve.
Preferably, the clear water outlet of the digestion tank is communicated with the irrigation water source through a fifth pipeline, a third water quality monitoring sensor is arranged in the digestion tank, a third electromagnetic valve is arranged on the fifth pipeline, and the third electromagnetic valve and the third water quality monitoring sensor are respectively connected with a sixth programmable controller.
Preferably, the adsorbent material is a zeolite.
Preferably, an air inlet control valve connected with the first programmable controller is arranged on an air inlet of the micro-nano bubble generator.
The invention also provides a micro-nano air entrainment-based automatic rice field irrigation and drainage method, which comprises the following steps:
(1) when the water level detected by the first water level sensor is lower than a set value, the third programmable controller starts the water pump and the micro-nano bubble generator, pumps water in an irrigation water source into the micro-nano bubble generator, injects the water pumped into the micro-nano bubble generator into micro-nano bubbles, and injects the water flowing out of the micro-nano bubble generator into a rice field to be irrigated;
(2) stopping irrigation when the water level in the rice field to be irrigated reaches the upper limit of water storage or the water quality in the rice field to be irrigated does not reach the standard, and discharging water in the rice field to be irrigated into the ecological drainage ditch;
(3) when the water quality in the ecological drainage ditch reaches the standard, draining the water in the ecological drainage ditch into the irrigation water source, and when the water quality in the ecological drainage ditch does not reach the standard, draining the water in the ecological drainage ditch into a digestion tank; and discharging the water reaching the standard after the digestion treatment by the digestion tank into the irrigation water source.
Preferably, when the dissolved oxygen concentration in the water flowing out of the micro-nano bubble generator does not meet the standard, firstly, a pipeline between the micro-nano bubble generator and the rice field to be irrigated is closed, the dissolved oxygen concentration in the water flowing out of the micro-nano bubble generator is adjusted by adjusting the flow of the water flowing into the micro-nano bubble generator and the air inflow of the micro-nano bubble generator, and the pipeline between the micro-nano bubble generator and the rice field to be irrigated is opened when the dissolved oxygen concentration of the water flowing out of the micro-nano bubble generator meets the standard.
Compared with the prior art, the invention has the following technical effects:
the micro-nano air-entrapping-based automatic irrigation and drainage system and method for the rice field can avoid the phenomenon that the water quality of the rice field is deteriorated and rice grows to be damaged after wheat straws are returned to the field in a rice and wheat rotation area. The invention relates to a micro-nano air-entrapping automatic irrigation and drainage system and method for flood-irrigation rice, which can achieve the purpose of weakening water quality deterioration of flood-irrigation rice fields caused by straw returning in rice and wheat crop rotation areas and solve the problem of non-point source pollution caused by flood-irrigation rice fields in non-rice and wheat crop rotation areas by the means of micro-nano air-entrapping irrigation. Meanwhile, the automatic irrigation and drainage system provided by the invention can realize automatic irrigation and drainage of flooded rice fields by means of rice field water level and water quality identification and gate valve control automatic control.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of an automatic micro-nano air entrainment-based rice field irrigation and drainage system of the present invention;
FIG. 2 is a flow chart of the micro-nano aeration based automatic rice field irrigation and drainage method of the invention;
wherein: 1. a flow valve; 2. a water pump; 3. a source of irrigation water; 4. a micro-nano bubble generator; 5. an intake air amount control valve; 6. a dissolved oxygen sensor; 7. a first programmable controller; 8. a first solenoid valve; 9. the paddy field is to be irrigated; 10. a first water quality monitoring sensor; 11. a first water level sensor; 12. a second programmable controller; 13. a third programmable controller; 14. a second solenoid valve; 15. an ecological drainage ditch; 16. a second water quality monitoring sensor; 17. a second water level sensor; 18. a fourth programmable controller; 19. a fifth programmable controller; 20. a three-way electromagnetic valve; 21. a digestion pool; 22. a third water quality monitoring sensor; 23. a sixth programmable controller; 24. a third electromagnetic valve; 25. and a fourth solenoid valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The invention aims to provide a micro-nano air-entrapping-based automatic irrigation and drainage system and method for a rice field, which are used for solving the problems in the prior art and avoiding the phenomenon that the water quality of the rice field is deteriorated and the rice is damaged due to the growth of the rice after wheat straws are returned to the field in a rice and wheat rotation area.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 to 2: the embodiment provides an automatic drainage system that irritates in paddy field based on micro-nano air entrainment, including water pump 2, micro-nano bubble generator 4, ecological escape canal 15 and digestion tank 21.
The water inlet of the water pump 2 is communicated with an irrigation water source 3 through a first pipeline, the water outlet of the water pump 2 is communicated with the water inlet of the micro-nano bubble generator 4 through a second pipeline, and the water outlet of the micro-nano bubble generator 4 is communicated to a paddy field 9 to be irrigated through a third pipeline; the rice field 9 to be irrigated is communicated with the water inlet of the ecological drainage ditch 15 through a fourth pipeline; the third pipeline is communicated with the irrigation water source 3 through a sixth pipeline, and a fourth electromagnetic valve 25 is arranged on the sixth pipeline. The water outlet of the ecological drainage ditch 15, the water inlet of the irrigation water source 3 and the water inlet of the digestion tank 21 are communicated with a three-way electromagnetic valve 20 through pipelines, and adsorption substances such as zeolite are arranged in the digestion tank 21 and used for digesting water with water quality exceeding the standard in the ecological drainage ditch 15, so that the aim of recycling farmland irrigation water is fulfilled.
The flow valve 1 is arranged on the second pipeline, the dissolved oxygen sensor 6 is arranged in the third pipeline, the first electromagnetic valve 8 is arranged on the third pipeline, a connecting port of the sixth pipeline and the third pipeline is located between a water outlet of the micro-nano bubble generator and the first electromagnetic valve 8, and the dissolved oxygen sensor 6, the first electromagnetic valve 8 and the fourth electromagnetic valve 25 are respectively connected with the first programmable controller 7. An air inlet control valve 5 connected with a first programmable controller 7 is arranged on an air inlet of the micro-nano bubble generator 4, and the first programmable controller 7 can control and adjust the air inlet control valve 5 according to a dissolved oxygen concentration numerical value fed back by the dissolved oxygen sensor 6 so as to adjust the air inlet size of the micro-nano bubble generator 4.
A first water quality monitoring sensor 10 and a first water level sensor 11 are arranged in a rice field 9 to be irrigated, the first water quality monitoring sensor 10 is connected with a second programmable controller 12, and the first water level sensor 11, the water pump 2 and the micro-nano bubble generator 4 are respectively connected with a third programmable controller 13; a second solenoid valve 14 is arranged on the fourth pipeline, the second programmable controller 12 and the third programmable controller 13 are respectively connected with the second solenoid valve 14, and the second programmable controller 12 and the third programmable controller 13 are respectively connected with the first solenoid valve 8.
A second water quality monitoring sensor 16 and a second water level sensor 17 are arranged in the ecological drainage ditch 15, the second water quality monitoring sensor 16 is connected with a fourth programmable controller 18, the second water level sensor 17 is connected with a fifth programmable controller 19, and the fourth programmable controller 18 and the fifth programmable controller 19 are respectively connected with a three-way electromagnetic valve 20. The second water quality monitoring sensor 16 is used for detecting water quality indexes such as COD of water in the farmland drainage ditch.
The purified water outlet of the digestion tank 21 is also communicated with the irrigation water source 3 through a fifth pipeline, a third water quality monitoring sensor 22 is arranged in the digestion tank 21, a third electromagnetic valve is arranged on the fifth pipeline, and the third electromagnetic valve and the third water quality monitoring sensor 22 are respectively connected with a sixth programmable controller 23.
The embodiment also provides a micro-nano air entrainment-based automatic rice field irrigation and drainage method, which comprises the following steps:
(1) when the water level detected by the first water level sensor 11 is lower than a set value, the third programmable controller 13 starts the water pump 2 and the micro-nano bubble generator 4, pumps water in the irrigation water source 3 into the micro-nano bubble generator 4, injects the water pumped into the micro-nano bubble generator 4 into micro-nano bubbles, and injects the water flowing out of the micro-nano bubble generator 4 into the paddy field 9 to be irrigated; the flow valve 1 can be manually adjusted to adjust the water quantity; when the dissolved oxygen sensor 6 detects that the concentration of the dissolved oxygen in the water flowing out of the micro-nano bubble generator 4 does not meet the standard, the first programmable controller 7 closes the first electromagnetic valve 8 and opens the fourth electromagnetic valve 25, so that the water flow with the dissolved oxygen concentration not meeting the standard returns to the irrigation water source 3, and the first programmable controller 7 controls and adjusts the air inflow control valve 5 according to the dissolved oxygen concentration value fed back by the dissolved oxygen sensor 6, so as to adjust the air inflow of the micro-nano bubble generator 4, so as to adjust the dissolved oxygen concentration of the water discharged by the micro-nano bubble generator 4 to meet the standard, when the dissolved oxygen concentration of the water flowing out of the micro-nano bubble generator 4 detected by the dissolved oxygen sensor 6 meets the standard, the first programmable controller 7 opens the first solenoid valve 8 and closes the fourth solenoid valve 25, and injects water with a dissolved oxygen concentration meeting the standard into the paddy field 9 to be irrigated.
(2) Stopping irrigation when the water level in the rice field 9 to be irrigated reaches the upper water storage limit or the water quality in the rice field 9 to be irrigated does not reach the standard, and discharging water in the rice field 9 to be irrigated into the ecological drainage ditch 15; specifically, if the first water quality monitoring sensor 10 detects that the water quality in the rice field 9 to be irrigated exceeds the standard, the second programmable controller 12 controls to close the first electromagnetic valve 8 and open the second electromagnetic valve 14, so that the water exceeding the standard in the rice field 9 to be irrigated flows into the ecological drainage ditch 15; when the water level measured by the first water level sensor 11 is 0, the third programmable controller 13 operates to close the second solenoid valve 14 to stop the water discharge, and simultaneously the third programmable controller 13 opens the first solenoid valve 8 to replenish water to the rice field. When the water quality measured by the first water quality monitoring sensor 10 meets the standard, the second programmable controller 12 does not work. When the second programmable controller 12 does not operate, the criteria for the operation of the third programmable controller 13 are: if the water level in the rice field 9 to be irrigated is smaller than the minimum depth of the flooding water layer, the third programmable controller 13 controls to start the first electromagnetic valve 8 to replenish water to the rice field 9 to be irrigated, and when the water level detected by the first water level sensor 11 is the upper limit of the flooding water layer of the rice field, the third programmable controller 13 controls to close the first electromagnetic valve 8 to stop watering; if the water level in the rice field 9 to be irrigated is greater than the maximum water storage depth, namely the water level reaches the upper limit of the water storage layer, the third programmable controller 13 controls to close the first electromagnetic valve 8 and start the second electromagnetic valve 14, so that redundant water in the rice field 9 to be irrigated is drained into the ecological drainage ditch 15, and when the water level detected by the first water level sensor 11 is the upper limit of the water flooding layer of the rice field, the third programmable controller 13 controls to close the second electromagnetic valve 14 and stop draining;
(3) draining the water in the ecological drainage ditch 15 into the irrigation water source 3 when the water quality in the ecological drainage ditch 15 reaches the standard, and draining the water in the ecological drainage ditch 15 into the digestion tank 21 when the water quality in the ecological drainage ditch 15 does not reach the standard; specifically, when the water level measured by the second water level sensor 17 does not reach the upper limit of the water level, the fifth programmable controller 19 brakes the operation of the fourth programmable controller 18 (when the water level does not reach a certain water level, the farmland drainage is drained to the ecological drainage ditch 15 first), and when the water level measured by the second water level sensor 17 reaches the preset water level, the fifth programmable controller 19 stops braking the fourth programmable controller 18. At this time, if the water quality measured by the second water quality monitoring sensor 16 exceeds the standard, the fourth programmable controller 18 controls the three-way electromagnetic valve 20 to open the valve connected with the digestion tank 21, so that the water in the drainage ditch flows into the digestion tank 21 for deep water quality purification; if the water quality in the rice field is qualified, the fourth programmable controller 18 controls the three-way electromagnetic valve 20 to open the valve connected with the irrigation water source 3, so that the water meeting the standard flows into the irrigation water collecting area.
(4) Discharging the water reaching the standard after digestion treatment by a digestion tank 21 into an irrigation water source 3; specifically, if the water quality in the digestion tank 21 measured by the third water quality monitoring sensor 22 meets the standard, the sixth programmable controller 23 controls to open the third electromagnetic valve, so that the water meeting the water quality requirement flows into the irrigation water source 3; if the water quality measured by the third water quality monitoring sensor 22 does not meet the standard, the sixth programmable controller 23 controls the third electromagnetic valve to keep a closed state until the water quality measured by the third water quality monitoring sensor 22 meets the standard.
According to the micro-nano air-entrapping-based automatic irrigation and drainage system and method for the rice field, the purpose of weakening water quality deterioration of the flood irrigation rice field caused by straw returning in the rice and wheat crop rotation area can be achieved through the micro-nano air-entrapping irrigation method, and the problem of non-point source pollution caused by the flood irrigation rice field in the non-rice and wheat crop rotation area is solved. Simultaneously, the automatic row system of irritating that this embodiment provided can rely on the automatic control of paddy field water level discernment, gate valve control to realize flooding and irritate the automatic irrigation of paddy field. The micro-nano bubbles have the characteristics of long retention time in water, large specific surface area, strong adsorbability, good stability and the like, can be quickly dissolved in water, increase the solubility of gas in water solution, enrich active oxygen in water, and show great potential in the aspect of environmental remediation. At present, the method is mainly applied to the aspects of surface water purification, sewage (wastewater) treatment, soil treatment and the like. Researches show that the micro-nano bubbles can enhance the microbial activity under anaerobic and aerobic conditions, promote the biodegradation and deposition of pollutants in water and improve the biological purification capacity of water. And moreover, the wastewater rich in ammonia nitrogen can be treated by fine bubble aeration, COD and ammonia nitrogen in the water body are obviously removed, and the water quality is improved. Meanwhile, for the paddy field, the activity of root system microorganisms can be improved by air-entrapping irrigation, the oxygen environment of the rice root system is optimized, the growth of the rice root system and the absorption and utilization of nutrient substances are promoted, and the yield and income of the rice are increased.
In the description of the present invention, it should be noted that the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. The utility model provides an automatic row system of irritating in paddy field based on micro-nano air entrainment which characterized in that: the device comprises a water pump and a micro-nano bubble generator, wherein a water inlet of the water pump is communicated with an irrigation water source through a first pipeline, a water outlet of the water pump is communicated with a water inlet of the micro-nano bubble generator through a second pipeline, and a water outlet of the micro-nano bubble generator is communicated to a paddy field to be irrigated through a third pipeline; a dissolved oxygen sensor is arranged in the third pipeline, and a first electromagnetic valve is arranged on the third pipeline; the third pipeline is communicated with the irrigation water source through a sixth pipeline, a fourth electromagnetic valve is arranged on the sixth pipeline, a connecting port of the sixth pipeline and the third pipeline is located between a water outlet of the micro-nano bubble generator and the first electromagnetic valve, and the dissolved oxygen sensor, the first electromagnetic valve and the fourth electromagnetic valve are respectively connected with a first programmable controller.
2. The micro-nano air entrainment based automatic rice field irrigation and drainage system as claimed in claim 1, characterized in that: the ecological drainage ditch is also included; and the rice field to be irrigated is communicated with the water inlet of the ecological drainage ditch through a fourth pipeline.
3. The micro-nano air entrainment based automatic rice field irrigation and drainage system as claimed in claim 2, characterized in that: a first water quality monitoring sensor and a first water level sensor are arranged in the rice field to be irrigated, the first water quality monitoring sensor is connected with a second programmable controller, and the first water level sensor, the water pump and the micro-nano bubble generator are respectively connected with a third programmable controller; and a second electromagnetic valve is arranged on the fourth pipeline, the second programmable controller and the third programmable controller are respectively connected with the second electromagnetic valve, and the second programmable controller and the third programmable controller are respectively connected with the first electromagnetic valve.
4. The micro-nano air-entrapping-based automatic rice field irrigation and drainage system according to claim 3, wherein: the ecological water source irrigation device is characterized by further comprising a digestion tank, wherein the water outlet of the ecological drainage ditch, the water inlet of the irrigation water source and the water inlet of the digestion tank are communicated with a three-way electromagnetic valve through a pipeline, and adsorption substances are arranged in the digestion tank.
5. The micro-nano air-entrapping-based automatic rice field irrigation and drainage system according to claim 4, wherein: and a second water quality monitoring sensor and a second water level sensor are arranged in the ecological drainage ditch, the second water quality monitoring sensor is connected with a fourth programmable controller, the second water level sensor is connected with a fifth programmable controller, and the fourth programmable controller and the fifth programmable controller are respectively connected with the three-way electromagnetic valve.
6. The micro-nano air-entrapping-based automatic rice field irrigation and drainage system according to claim 4 or 5, wherein: clear water outlet of the digestion tank is communicated with the irrigation water source through a fifth pipeline, a third water quality monitoring sensor is arranged in the digestion tank, a third electromagnetic valve is arranged on the fifth pipeline, and the third electromagnetic valve and the third water quality monitoring sensor are respectively connected with a sixth programmable controller.
7. The micro-nano air-entrapping-based automatic rice field irrigation and drainage system according to claim 4, wherein: the adsorbent material is a zeolite.
8. The micro-nano air entrainment based automatic rice field irrigation and drainage system as claimed in claim 1, characterized in that: and an air inlet control valve connected with the first programmable controller is arranged on an air inlet of the micro-nano bubble generator.
9. A micro-nano air entrainment-based automatic rice field irrigation and drainage method is characterized by comprising the following steps:
(1) when the water level detected by the first water level sensor is lower than a set value, the third programmable controller starts the water pump and the micro-nano bubble generator, pumps water in an irrigation water source into the micro-nano bubble generator, injects the water pumped into the micro-nano bubble generator into micro-nano bubbles, and injects the water flowing out of the micro-nano bubble generator into a rice field to be irrigated;
(2) stopping irrigation when the water level in the rice field to be irrigated reaches the upper limit of water storage or the water quality in the rice field to be irrigated does not reach the standard, and discharging water in the rice field to be irrigated into the ecological drainage ditch;
(3) when the water quality in the ecological drainage ditch reaches the standard, draining the water in the ecological drainage ditch into the irrigation water source, and when the water quality in the ecological drainage ditch does not reach the standard, draining the water in the ecological drainage ditch into a digestion tank; and discharging the water reaching the standard after the digestion treatment by the digestion tank into the irrigation water source.
10. The automatic rice field irrigation and drainage method based on micro-nano air entrainment as claimed in claim 9, characterized in that: when the dissolved oxygen concentration in the water flowing out of the micro-nano bubble generator does not meet the standard, firstly closing a pipeline between the micro-nano bubble generator and the rice field to be irrigated, adjusting the dissolved oxygen concentration in the water flowing out of the micro-nano bubble generator by adjusting the flow of the water flowing into the micro-nano bubble generator and the air input of the micro-nano bubble generator, and opening the pipeline between the micro-nano bubble generator and the rice field to be irrigated when the dissolved oxygen concentration of the water flowing out of the micro-nano bubble generator meets the standard.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111300076.2A CN114020080B (en) | 2021-11-04 | 2021-11-04 | Micro-nano air entrainment-based automatic rice field irrigation and drainage system and method |
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| CN202111300076.2A CN114020080B (en) | 2021-11-04 | 2021-11-04 | Micro-nano air entrainment-based automatic rice field irrigation and drainage system and method |
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| CN114020080A true CN114020080A (en) | 2022-02-08 |
| CN114020080B CN114020080B (en) | 2022-07-08 |
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Cited By (1)
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