CN111280020A - Treatment equipment for agricultural water and fertilizer irrigation and use method thereof - Google Patents

Abstract

The invention provides a treatment device for agricultural water and fertilizer irrigation and a use method thereof, wherein the treatment device comprises the following steps: the filter comprises a water tank, a filter, a permeator, a first connecting pipe, a second connecting pipe and a third connecting pipe; a first filter screen is arranged in the filter and used for dividing the filter into a filter cavity and a first drainage cavity; the infiltration device is internally provided with an infiltration film for dividing the infiltration device into an infiltration cavity and a second liquid discharge cavity; one end of the first connecting pipe is connected with the water tank, and the other end of the first connecting pipe is connected with the filter; one end of the second connecting pipe is connected with the filter, and the other end of the second connecting pipe is connected with the permeator; the third connecting pipe is connected with the permeator to enable the liquid in the second liquid discharging cavity to flow out of the permeator. The invention pumps an initial water source through a water pump and holds the initial water source in a water tank; connecting the water tank and the filter through a first connecting pipe to filter an initial water source; the second connecting pipe is connected with the filter and the permeator to permeate the filtered water source; and the third connecting pipe is connected with the permeator to enable the water source in the permeator to flow out.

Description

Treatment equipment for agricultural water and fertilizer irrigation and use method thereof

Technical Field

The invention relates to the technical field of agriculture, in particular to treatment equipment for agricultural water and fertilizer irrigation and a using method thereof.

Background

The water irrigation land area of China occupies about 50% of the cultivated land area of the whole country, but the grain output accounts for more than 2/3% of the whole country, and the vegetable output accounts for more than 90% of the whole country, so that the water irrigation land capacity is improved, and the method has great significance for the national agricultural development. The cultivation mode and the irrigation mode are important factors influencing the performance of the irrigated land, and researchers find that the cultivation mode of deep scarification in autumn can obviously improve the soil quality of the irrigated land, effectively reduce the volume weight of the soil, improve the porosity of the soil, increase the field water holding capacity and the saturated water content, thicken an effective cultivation layer and improve the utilization rate of water and fertilizer. However, the deep scarification in autumn is far from sufficient for improving the water irrigation property, and a reasonable irrigation mode needs to be matched.

The current irrigation water source is not subjected to primary treatment, such as filtration treatment, desalination treatment and the like; resulting in the inability of these water sources to be used directly for water and fertilizer irrigation with soluble fixed fertilizers, soluble liquid fertilizers, and the like. Therefore, the invention provides the treatment equipment for agricultural water and fertilizer irrigation and the use method thereof, which have important significance.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present invention aims to provide a treatment device for agricultural water and fertilizer irrigation and a method for using the same, which are used for solving the problems in the prior art.

To achieve the above and other related objects, the present invention provides a treatment apparatus for agricultural water and fertilizer irrigation, comprising:

a water tank for containing untreated fluid in an initial state;

the filter is internally provided with one or more first filter screens, and the one or more first filter screens divide the filter into one or more filter cavities and a first drainage cavity;

the device comprises a permeator and a liquid collecting device, wherein one or more layers of permeable membranes are arranged inside the permeator and divide the permeator into one or more permeable cavities and a second liquid discharging cavity;

a first connection pipe having one end connected to the water tank and the other end connected to the filter, so that the fluid in the water tank flows into the filter;

one end of the second connecting pipe is connected with the filter, and the other end of the second connecting pipe is connected with the permeator, so that the fluid in the first drainage cavity flows into the permeator;

and the third connecting pipe is connected with the permeator to enable the liquid in the second liquid discharging cavity to flow out of the permeator.

Optionally, a second filter screen is fixed inside the water tank.

Optionally, one or more limiting protrusions are arranged on the inner wall of the water tank; the second filter screen is placed on the one or more limiting protrusions.

Optionally, the water tank has a side wall, and the side wall is provided with a first through hole;

the filter has a first end to which a cover plate is detachably attached; the cover plate is provided with a second through hole;

one end of the first connecting pipe is fixed in the first through hole, and the other end of the first connecting pipe is fixed in the second through hole.

Optionally, a gasket is further included, the gasket being located between the cover plate and the filter.

Optionally, the filter further has a second end portion extending from the first end portion along the axial direction, and the second end portion is provided with a third through hole;

the permeator is provided with a third end part, and the third end part is provided with a fourth through hole;

one end of the second connecting pipe is fixed in the third through hole, and the other end of the second connecting pipe is fixed in the fourth through hole.

Optionally, the permeator further has a fourth end portion extending axially from the third end portion, and the fourth end portion is opened with a fifth through hole; the third connecting pipe is fixed in the fifth through hole.

Optionally, a cushion is provided on the outside of the first connection pipe located between the water tank and the filter.

Optionally, a sealing ring is arranged in the first through hole, the second through hole, the third through hole, the fourth through hole and the fifth through hole.

The invention also provides a method for using the treatment equipment for agricultural water and fertilizer irrigation, which comprises the following steps:

pumping untreated fluid at 20-50 ℃ in an initial state at a speed of 2-5 cubic meters per hour by a water pump, and accommodating the pumped fluid at 20-50 ℃ in a water tank;

one end connected through a first connecting pipe is connected with the water tank, and the other end of the first connecting pipe is connected with the filter, so that fluid in the water tank flows into the filter at the speed of 2-5 cubic meters per hour; one or more first filter screens are arranged in the filter, and the filter is divided into one or more filter cavities and a first drainage cavity by the one or more first filter screens; the first filter screen filters impurities with the volume of 1-10 cubic centimeters for one time or multiple times, and the temperature of the fluid is kept at 20-40 ℃;

one end of a second connecting pipe is connected with the filter, and the other end of the second connecting pipe is connected with the permeator, so that the fluid in the first drainage cavity flows into the permeator; one or more layers of permeable membranes are arranged in the permeator and divide the permeator into one or more permeable cavities and a second liquid discharge cavity; the permeable membrane is used for carrying out one-time or multiple-time permeation on impurities with the volume of 0.01-1 cubic centimeter, and the temperature of the fluid is kept at 20-30 ℃;

and the second liquid discharge cavity is connected with the permeator through a third connecting pipe, so that the liquid in the second liquid discharge cavity flows out of the permeator, and the temperature of the flowing-out fluid is kept at 20-25 ℃.

As above, the invention provides a treatment device for agricultural water and fertilizer irrigation and a use method thereof, and the treatment device has the following beneficial effects: the method comprises the steps of extracting untreated fluid at 20-50 ℃ in an initial state at a speed of 2-5 cubic meters per hour by a water pump, and accommodating the extracted fluid at 20-50 ℃ in a water tank; one end connected through a first connecting pipe is connected with the water tank, and the other end of the first connecting pipe is connected with the filter, so that fluid in the water tank flows into the filter at the speed of 2-5 cubic meters per hour; one or more first filter screens are arranged in the filter, and the filter is divided into one or more filter cavities and a first drainage cavity by the one or more first filter screens; the first filter screen filters impurities with the volume of 1-10 cubic centimeters for one time or multiple times, and the temperature of the fluid is kept at 20-40 ℃; one end of a second connecting pipe is connected with the filter, and the other end of the second connecting pipe is connected with the permeator, so that the fluid in the first drainage cavity flows into the permeator; one or more layers of permeable membranes are arranged in the permeator and divide the permeator into one or more permeable cavities and a second liquid discharge cavity; the permeable membrane is used for carrying out one-time or multiple-time permeation on impurities with the volume of 0.01-1 cubic centimeter, and the temperature of the fluid is kept at 20-30 ℃; and the second liquid discharge cavity is connected with the permeator through a third connecting pipe, so that the liquid in the second liquid discharge cavity flows out of the permeator, and the temperature of the flowing-out fluid is kept at 20-25 ℃. The invention can filter impurities with the volume of 1-10 cubic centimeters and impurities with the infiltration volume of 0.01-1 cubic centimeter, and the fluid extraction speed is 2-5 cubic meters per hour, so that the fluid extraction can be realized more quickly; the invention has wider volume range for filtering impurities and narrower volume range for permeating the impurities, and can simultaneously keep the temperature of the filtered and permeated fluid at 20-50 ℃ at 20-25 ℃.

Drawings

Fig. 1 is a schematic perspective view of a treatment device for water and fertilizer irrigation according to an embodiment;

FIG. 2 is a front view of a treatment facility for water and fertilizer irrigation according to an exemplary embodiment;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a right side view of FIG. 2;

FIG. 5 is a cross-sectional view taken along line F-F of FIG. 4;

fig. 6 is an enlarged schematic view of the structure at C in fig. 5.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

Please refer to fig. 1 to 6. It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated. The structures, proportions, sizes, and other dimensions shown in the drawings and described in the specification are for understanding and reading the present disclosure, and are not intended to limit the scope of the present disclosure, which is defined in the claims, and are not essential to the art, and any structural modifications, changes in proportions, or adjustments in size, which do not affect the efficacy and attainment of the same are intended to fall within the scope of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

Referring to fig. 1 to 6, the present embodiment provides a processing apparatus for agricultural water and fertilizer irrigation, the processing apparatus includes:

a water tank 1 for containing untreated fluid in an initial state;

the filter 7 is internally provided with one or more first filter screens, and the filter 7 is divided into one or more filter cavities and a first drainage cavity 75 by the one or more first filter screens; as an example, the filter 7 in the embodiment of the present application is provided with 2 first filters, that is, a multimedia filter 72 and an activated carbon filter 74; the filter 7 is divided into a multi-media filter chamber 71 and an activated carbon filter chamber 73, and a first drain chamber 75, respectively.

The device comprises a permeator 10, wherein one or more permeable membranes 14 are arranged inside the permeator 10, and the one or more permeable membranes 14 divide the permeator 10 into one or more permeable cavities 100 and a second liquid discharge cavity 110; by way of example, the interior of the permeator 10 in the embodiments of the present application is provided with a permeable membrane 14, thereby dividing the permeator 10 into a permeate chamber 100 and a second effluent chamber 110.

A first connection pipe 101, one end of which 101 is connected to the water tank 1 and the other end is connected to the filter 7, so that the fluid in the water tank 1 flows into the filter 7;

a second connection pipe 8 having one end connected to the filter 7 and the other end connected to the permeator 10, so that the fluid in the first drainage chamber 75 flows into the permeator 10;

and a third connection pipe 12 connected to the permeator 10 to allow the liquid in the second liquid discharge chamber 110 to flow out of the permeator 10.

The device pumps untreated fluid in an initial state through a water pump, and an initial water source is contained in a water tank; connecting the water tank and the filter through a first connecting pipe, and filtering the initial water source for one time or multiple times; the filter and the permeator are connected through a second connecting pipe, and the fluid filtered by the filter is permeated; and connecting the permeator through a third connecting pipe to enable the fluid in the permeator to flow out. Wherein, the fluid in the invention is a water source; the invention can carry out primary treatment on the initial water source and remove impurities which may cause pollution and damage to the reverse osmosis membrane in the water. After calculation by professional calculation software, the most reasonable reverse osmosis combination design is obtained. The equipment can realize desalination, and most of soluble salts, colloids, organic matters, microorganisms and the like in water can be removed by utilizing the characteristics of the reverse osmosis membrane. The qualified source water after pretreatment enters reverse osmosis, water molecules and a very small amount of small molecular weight organic matters pass through the membrane layer, are concentrated through the collecting pipeline and then are injected into a pure water tank of a reverse osmosis product water tank, and the water which cannot pass through the membrane layer can be discharged as system concentrated water and can be partially fed back to the reverse osmosis for recycling, so that the utilization rate of the water is improved, and energy is saved.

In an exemplary embodiment, a second filter 2 is further fixed inside the water tank 1. The second filter screen 2 is arranged to filter impurities with larger volume in the initial water source. Wherein, one or more limiting bulges 3 are arranged on the inner wall of the water tank 1; the second filter screen 2 is placed on the one or more limiting protrusions 3. Place second filter screen 2 on spacing arch 3, guarantee that second filter screen 2 can change at any time, also can take off second filter screen 2 at any time, clear up the impurity in the second filter screen simultaneously.

In an exemplary embodiment, the water tank 1 has a side wall, and the side wall is provided with a first through hole; the filter 7 has a first end, and a cover plate 5 is detachably connected to the first end of the filter 7; the cover plate 5 is provided with a second through hole; one end of the first connecting pipe 101 is fixed in the first through hole, and the other end is fixed in the second through hole. Wherein, apron 5 dismantles through fixing bolt 4 and filter 7 and is connected, can dismantle through apron 5 and filter 7 and be connected, when there are more impurity in filter 7 inside, conveniently clears up the impurity in the filter 7. The sealing rings 11 are arranged in the first through hole and the second through hole, so that a water source in the water tank 1 and a water source in the filter 7 can not flow out from the through holes along the side wall of the first connecting pipe 101.

In an exemplary embodiment, a gasket 6 is further included, the gasket 6 being located between the cover plate 5 and the filter 7. Through setting up sealed 6, the leakproofness when guaranteeing apron 5 and filter 7 fixed connection can not let the water source in the filter 7 flow out along the edge of apron.

In an exemplary embodiment, the filter 7 further has a second end portion extending axially from the first end portion, the second end portion being provided with a third through hole; the permeator 10 is provided with a third end part, and a fourth through hole is formed in the third end part; one end of the second connecting pipe 8 is fixed in the third through hole, and the other end is fixed in the fourth through hole. Wherein, the third through-hole and the inside sealing washer 11 that all is provided with of fourth through-hole guarantee that the water source in the filter 7 and the water source in the infiltration ware 10 can not follow the through-hole department and flow out along the lateral wall of second connecting pipe 8. A sixth through hole is formed in the second end, and a fourth connecting pipe 9 and a sealing ring 11 are fixed at the position of the sixth through hole; the liquid in the filter 7 can be directly discharged through the fourth connecting pipe 9, so that the liquid is not treated by the permeator 10, and the device can be suitable for more irrigation situations.

In an exemplary embodiment, the permeator 10 further has a fourth end portion extending axially from the third end portion, the fourth end portion being perforated with a fifth through hole; the third connecting pipe 12 is fixed in the fifth through hole. Wherein, a sealing ring 11 is arranged in the fifth through hole to ensure that the water source in the permeator 10 cannot flow out from the fifth through hole along the side wall of the third connecting pipe 12. The water source flowing out from the third connecting pipe 12 is a water source subjected to desalination treatment, and can be treated by the permeator to remove soluble salts, colloids, organic matters, microorganisms and the like in the water source, so that the equipment can be suitable for more irrigation situations.

In an exemplary embodiment, a cushion pad 13 is provided on the outside of the first connection pipe 101 located between the water tank 1 and the filter 7. Through setting up blotter 13, make to have the gap of certain height between water tank 1 and the filter 7, make things convenient for fixing bolt 4's dismantlement and installation.

The apparatus provides a tank for containing untreated fluid in an initial state; the filter is internally provided with one or more first filter screens, and the one or more first filter screens divide the filter into one or more filter cavities and a first drainage cavity; the device comprises a permeator and a liquid collecting device, wherein one or more layers of permeable membranes are arranged inside the permeator and divide the permeator into one or more permeable cavities and a second liquid discharging cavity; a first connection pipe having one end connected to the water tank and the other end connected to the filter, so that the fluid in the water tank flows into the filter; one end of the second connecting pipe is connected with the filter, and the other end of the second connecting pipe is connected with the permeator, so that the fluid in the first drainage cavity flows into the permeator; and the third connecting pipe is connected with the permeator to enable the liquid in the second liquid discharging cavity to flow out of the permeator.

Specifically, the device extracts untreated fluid at 20-50 ℃ in an initial state at a speed of 2-5 cubic meters per hour through a water pump, and the extracted fluid at 20-50 ℃ is contained in a water tank; one end connected through a first connecting pipe is connected with the water tank, and the other end of the first connecting pipe is connected with the filter, so that fluid in the water tank flows into the filter at the speed of 2-5 cubic meters per hour; one or more first filter screens are arranged in the filter, and the filter is divided into one or more filter cavities and a first drainage cavity by the one or more first filter screens; the first filter screen filters impurities with the volume of 1-10 cubic centimeters for one time or multiple times, and the temperature of the fluid is kept at 20-40 ℃; one end of a second connecting pipe is connected with the filter, and the other end of the second connecting pipe is connected with the permeator, so that the fluid in the first drainage cavity flows into the permeator; one or more layers of permeable membranes are arranged in the permeator and divide the permeator into one or more permeable cavities and a second liquid discharge cavity; the permeable membrane is used for carrying out one-time or multiple-time permeation on impurities with the volume of 0.01-1 cubic centimeter, and the temperature of the fluid is kept at 20-30 ℃; and the second liquid discharge cavity is connected with the permeator through a third connecting pipe, so that the liquid in the second liquid discharge cavity flows out of the permeator, and the temperature of the flowing-out fluid is kept at 20-25 ℃.

The device pumps untreated fluid in an initial state through a water pump, and an initial water source is contained in a water tank; connecting the water tank and the filter through a first connecting pipe, and filtering the initial water source for one time or multiple times; the filter and the permeator are connected through a second connecting pipe, and the fluid filtered by the filter is permeated; and connecting the permeator through a third connecting pipe to enable the fluid in the permeator to flow out. Wherein, the fluid in the equipment is a water source; this equipment can carry out primary treatment to initial water source, gets rid of the impurity that the aquatic probably caused pollution and destruction to reverse osmosis membrane. After calculation by professional calculation software, the most reasonable reverse osmosis combination design is obtained. The equipment can realize desalination, and most of soluble salts, colloids, organic matters, microorganisms and the like in water can be removed by utilizing the characteristics of the reverse osmosis membrane. The qualified source water after pretreatment enters reverse osmosis, water molecules and a very small amount of small molecular weight organic matters pass through the membrane layer, are concentrated through the collecting pipeline and then are injected into a pure water tank of a reverse osmosis product water tank, and the water which cannot pass through the membrane layer can be discharged as system concentrated water and can be partially fed back to the reverse osmosis for recycling, so that the utilization rate of the water is improved, and energy is saved. The equipment can filter impurities with the volume of 1-10 cubic centimeters and impurities with the infiltration volume of 0.01-1 cubic centimeter, and can quickly realize the extraction of the fluid at the speed of 2-5 cubic meters per hour; the equipment has wider volume range for filtering impurities and narrower volume range for permeating the impurities, and can simultaneously keep the temperature of fluid at 20-50 ℃ after filtration and permeation at 20-25 ℃.

The invention also provides a method for using the treatment equipment for agricultural water and fertilizer irrigation, and for the treatment equipment, reference is made to the detailed description above, and the method is not repeated. The method comprises the following steps:

s100, extracting untreated fluid at the temperature of 20-50 ℃ in an initial state at the speed of 2-5 cubic meters per hour through a water pump, and accommodating the extracted fluid at the temperature of 20-50 ℃ in a water tank;

s200, connecting one end connected through a first connecting pipe with the water tank, and connecting the other end with the filter, so that fluid in the water tank flows into the filter at a speed of 2-5 cubic meters per hour; one or more first filter screens are arranged in the filter, and the filter is divided into one or more filter cavities and a first drainage cavity by the one or more first filter screens; the first filter screen filters impurities with the volume of 1-10 cubic centimeters for one time or multiple times, and the temperature of the fluid is kept at 20-40 ℃;

s300, connecting one end of a second connecting pipe with the filter, and connecting the other end of the second connecting pipe with the permeator, so that the fluid in the first drainage cavity flows into the permeator; one or more layers of permeable membranes are arranged in the permeator and divide the permeator into one or more permeable cavities and a second liquid discharge cavity; the permeable membrane is used for carrying out one-time or multiple-time permeation on impurities with the volume of 0.01-1 cubic centimeter, and the temperature of the fluid is kept at 20-30 ℃;

s400, connecting the second liquid discharging cavity with the permeator through a third connecting pipe, so that the liquid in the second liquid discharging cavity flows out of the permeator, and the temperature of the flowing-out fluid is kept at 20-25 ℃.

The method comprises the steps of pumping untreated fluid in an initial state through a water pump, and accommodating an initial water source in a water tank; connecting the water tank and the filter through a first connecting pipe, and filtering the initial water source for one time or multiple times; the filter and the permeator are connected through a second connecting pipe, and the fluid filtered by the filter is permeated; and connecting the permeator through a third connecting pipe to enable the fluid in the permeator to flow out. Wherein, the fluid in the method is a water source; the method can carry out primary treatment on the initial water source and remove impurities which may cause pollution and damage to the reverse osmosis membrane in the water. After calculation by professional calculation software, the most reasonable reverse osmosis combination design is obtained. The method can realize desalination of water source, and remove most of soluble salt, colloid, organic matter, microorganism, etc. in water by using the characteristics of reverse osmosis membrane. The qualified source water after pretreatment enters reverse osmosis, water molecules and a very small amount of small molecular weight organic matters pass through the membrane layer, are concentrated through the collecting pipeline and then are injected into a pure water tank of a reverse osmosis product water tank, and the water which cannot pass through the membrane layer can be discharged as system concentrated water and can be partially fed back to the reverse osmosis for recycling, so that the utilization rate of the water is improved, and energy is saved. The method can filter impurities with the volume of 1-10 cubic centimeters and impurities with the penetration volume of 0.01-1 cubic centimeter, and can extract the fluid at the speed of 2-5 cubic meters per hour, so that the fluid can be extracted more quickly; the method has wider volume range for filtering impurities and narrower volume range for permeating the impurities, and can simultaneously keep the temperature of the filtered and permeated fluid at 20-50 ℃ at 20-25 ℃.

In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (10)

1. A treatment device for agricultural water and fertilizer irrigation, characterized in that the treatment device comprises:

a tank (1) for containing untreated fluid in an initial state;

the filter (7) is internally provided with one or more first filter screens, and the filter (7) is divided into one or more filter cavities and a first drainage cavity (75) by the one or more first filter screens;

the device comprises a permeator (10), wherein one or more permeable membranes (14) are arranged inside the permeator (10), and the one or more permeable membranes (14) divide the permeator (10) into one or more permeable cavities (100) and a second liquid discharging cavity (110);

a first connection pipe (101), one end of the first connection pipe (101) is connected with the water tank (1), and the other end of the first connection pipe is connected with the filter (7), so that the fluid in the water tank (1) flows into the filter (7);

a second connection pipe (8), one end of the second connection pipe (8) is connected with the filter (7), the other end of the second connection pipe is connected with the permeator (10), and the fluid in the first drainage cavity (75) flows into the permeator (10);

and the third connecting pipe (12) is connected with the permeator (10) to enable the liquid in the second liquid discharging cavity (110) to flow out of the permeator (10).

2. The treatment plant for agricultural water and fertilizer irrigation according to claim 1, characterized in that: and a second filter screen (2) is also fixed in the water tank (1).

3. The treatment plant for agricultural liquid manure irrigation as defined in claim 2, wherein: one or more limiting bulges (3) are arranged on the inner wall of the water tank (1); the second filter screen (2) is placed on the one or more limiting bulges (3).

4. The treatment plant for agricultural water and fertilizer irrigation according to claim 1, characterized in that: the water tank (1) is provided with a side wall, and the side wall is provided with a first through hole;

the filter (7) has a first end, and a cover plate (5) is detachably connected to the first end of the filter (7); the cover plate (5) is provided with a second through hole;

one end of the first connecting pipe (101) is fixed in the first through hole, and the other end of the first connecting pipe is fixed in the second through hole.

5. A treatment plant for agricultural water and fertilizer irrigation according to claim 4, characterized in that: the filter is characterized by further comprising a sealing gasket (6), wherein the sealing gasket (6) is positioned between the cover plate (5) and the filter (7).

6. A treatment plant for agricultural water and fertilizer irrigation according to claim 4, characterized in that: the filter (7) is also provided with a second end part extending from the first end part along the axial direction, and the second end part is provided with a third through hole;

the permeator (10) is provided with a third end part, and a fourth through hole is formed in the third end part;

one end of the second connecting pipe (8) is fixed in the third through hole, and the other end of the second connecting pipe is fixed in the fourth through hole.

7. A treatment plant for agricultural water and fertilizer irrigation according to claim 6, characterized in that: the permeator (10) is also provided with a fourth end part extending from the third end part along the axial direction, and the fourth end part is provided with a fifth through hole; the third connecting pipe (12) is fixed in the fifth through hole.

8. A treatment device for agricultural water and fertilizer irrigation according to claim 1, characterized in that a buffer pad (13) is provided on the outside of the first connection pipe (101) intermediate the water tank (1) and the filter (7).

9. The treatment equipment for agricultural liquid manure irrigation according to claim 7, characterized in that sealing rings (11) are arranged in the first through hole, the second through hole, the third through hole, the fourth through hole and the fifth through hole.

10. A method of using a treatment plant for agricultural fertigation as claimed in any one of claims 1 to 9, comprising the steps of:

pumping untreated fluid at 20-50 ℃ in an initial state at a speed of 2-5 cubic meters per hour by a water pump, and accommodating the pumped fluid at 20-50 ℃ in a water tank;

one end connected through a first connecting pipe is connected with the water tank, and the other end of the first connecting pipe is connected with the filter, so that fluid in the water tank flows into the filter at the speed of 2-5 cubic meters per hour; one or more first filter screens are arranged in the filter, and the filter is divided into one or more filter cavities and a first drainage cavity by the one or more first filter screens; the first filter screen filters impurities with the volume of 1-10 cubic centimeters for one time or multiple times, and the temperature of the fluid is kept at 20-40 ℃;

one end of a second connecting pipe is connected with the filter, and the other end of the second connecting pipe is connected with the permeator, so that the fluid in the first drainage cavity flows into the permeator; one or more layers of permeable membranes are arranged in the permeator and divide the permeator into one or more permeable cavities and a second liquid discharge cavity; the permeable membrane is used for carrying out one-time or multiple-time permeation on impurities with the volume of 0.01-1 cubic centimeter, and the temperature of the fluid is kept at 20-30 ℃;

and the second liquid discharge cavity is connected with the permeator through a third connecting pipe, so that the liquid in the second liquid discharge cavity flows out of the permeator, and the temperature of the flowing-out fluid is kept at 20-25 ℃.

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