KR100850770B1 - Irrigation water purifying apparatus and method for converting the agricultural water reuse using the same - Google Patents

Abstract

An agricultural water treatment apparatus is provided to utilize the irrigation water or river water as clean agricultural water by removing suspended solids and microorganisms contained in irrigation water or river water, and a method for converting irrigation water or river water into agricultural reusing water using the apparatus is provided. An agricultural water treatment apparatus comprises: an inflow pump(7) for flowing agricultural water into the apparatus; a filter unit(20) for removing suspended solids contained in the agricultural water that has been flown in by the inflow pump; a storage tank(1) including a ultraviolet module(2) for sterilizing the agricultural water from which the suspended solids have been removed by the filter unit and a level switch(3) for sensing a level of agricultural water; a feed pump(12) connected to the storage tank to feed the agricultural water that has been treated in the storage tank to farmland; a cleaning valve(5) connected to the storage tank to supply the agricultural water that has been treated in the storage tank as cleaning water; a cleaning stand(6) for collecting the agricultural water that has been used as the cleaning water; a zero discharge tank(25) including a carbon filter(11) for removing alien substances from agricultural water that has been collected in the cleaning stand; a strainer(10) for filtering agricultural water that has been treated in the zero discharge tank to discharge the filtered agricultural water; and a control box(4) for controlling operations of the inflow pump, storage tank, feed pump, and zero discharge tank.

Description

Irrigation Water Purifying Apparatus and Method for Converting the Agricultural Water Reuse Using The Same}

The present invention relates to an agricultural water treatment device and a method for converting agricultural reuse water using the same, and more particularly, to remove floating substances and microorganisms contained in water or river water in an irrigation canal adjacent to a farming plant and use them as clean agricultural water. It relates to a agricultural water treatment device for and a method for converting the agricultural reuse water using the same.

In order to prepare for the Free Trade Agreement (FTA), the most important challenge in the agricultural sector is to produce eco-friendly agricultural products with high-quality stability to secure competitiveness of our agricultural products. In order to realize this, there are many factors such as selection of varieties, fertilizer application, environmental control, clean water supply, and good quality soil, but clean water supply is suggested as the most important factor. Moreover, in order to obtain the GAP certification, the government must manage the factors that cause problems in food integrity such as polluted water or soil, pesticides, heavy metals, and harmful organisms. As it is possible to improve farm household income and secure agricultural competitiveness, which is twice the amount of general products, the importance of clean agricultural water is increasing.

However, in Korea, it is difficult to secure agricultural water resources due to severe rainfall changes according to regions and seasons. As the groundwater and reservoirs are contaminated, the current recognition of agricultural water and heavy water is very low, and there is a high level of objection to reuse of sewage.

As a result, many companies are reusing wastewater from sewage treatment plants as agricultural water.However, the introduction of advanced treatment processes into sewage treatment plants has made it difficult to secure water demand and the initial investment and maintenance costs for reuse. (Korean Patent Publication No. 2006-0089118, Korean Utility Model No. 0276382, Korean Registered Patent No. 348414).

In the case of a serious crisis such as a lack of water in Korea, commercially known techniques for securing alternative water resources are seawater desalination, but such seawater desalination must meet their standards in order to use the seawater mainly as water and drinking water. Because of this, expensive equipment and difficult procedures must be used, and the seawater desalination system using the membrane separation device deteriorates the membrane permeability or the permeability of the membrane and the water quality of the membrane by the microorganisms in the seawater. In order to prevent the growth of microorganisms, there are disadvantages in that maintenance costs such as chemical treatment and cleaning, membrane replacement, etc. are high (Korea Utility Model No. 373511 and Korean Patent No. 505324). In addition, domestic seawater desalination facilities are limitedly installed in island regions due to maintenance costs and management problems, and high efficiency is urgently needed.

Conventionally, in order to solve the shortage of agricultural water and to supply clean water at low cost, we have developed and used it as a water source in each main mountain complex, and it is used as a water source, but due to depletion of groundwater, water pollution and flooding Restrictions on the use of clean water, such as short circuits and changes in winter water sources, and the areas where surface water is used as a source of water are severely contaminated with water and are required to improve water quality. Due to the difficulty, it is necessary to develop a water purifier capable of supplying clean water at low cost.

Accordingly, the present inventors have made diligent efforts to solve the shortcomings of the prior art, the installation of the inlet pipe in the irrigation canal or stream adjacent to the farmland, while adjusting the water level of the incoming water using a level switch, irrigation canal or By introducing the water from the stream into the device, and removing the suspended substances and microorganisms contained in the water to be treated by using the filter means and the ultraviolet module, by confirming that irrigation water or river water can be safely used as clean agricultural water, The invention was completed.

It is an object of the present invention to provide an agricultural water treatment device for simply supplying clean agricultural water without expensive equipment and a method for converting the agricultural water into the same.

In order to achieve the above object, the present invention provides an inlet pump (7) for introducing the water to be treated into the apparatus; Filter means (20) for removing suspended solids contained in the water to be treated introduced by the inflow pump (7); A storage tank (1) having an ultraviolet module (2) for sterilizing the water to be treated with the suspended solids removed by the filter means (20) and a level switch (3) for detecting the water level of the water to be treated; A supply pump 12 for supplying the treated water treated in the storage tank 1 to farmland; A washing valve (5) for supplying the treatment target water treated in the storage tank (1) to washing water; Washing table (6) for collecting the water to be used as the washing water; Non-discharge tank 25 provided with the carbon filter 11 for receiving the treated water collected in the washing table 6 to remove the foreign matter; A strainer (10) for filtering and discharging the water to be treated treated in the discharge tank (25); And a control box 4 for controlling the operation of the inflow pump 7, the storage tank 1, the supply pump 25, and the non-discharge tank 11.

The present invention also provides a method for converting irrigation water or river water into agricultural reuse water, wherein the agricultural water treatment device removes suspended matter and microorganisms in irrigation water or river water.

Agricultural water treatment device according to the present invention is installed in the inlet pipe in a nearby irrigation canal or stream, and the water level level switch to adjust the water level of the water to be treated to flow into the device, then filter means provided in the device and By using the UV sterilization module, it prevents sludge generation in the device, significantly lowers the turbidity of the water to be treated, and efficiently removes suspended substances and microorganisms, thereby providing clean agricultural water suitable for growing crops. Safety can be ensured for convenience and hazards against water demand in other rural areas.

In the present invention, the inlet pump (7) for introducing the water to be treated into the apparatus at a consistent point; Filter means (20) for removing suspended solids contained in the water to be treated introduced by the inflow pump (7); A storage tank (1) having an ultraviolet module (2) for sterilizing the water to be treated with the suspended solids removed by the filter means (20) and a level switch (3) for detecting the water level of the water to be treated; A supply pump 12 for supplying the treated water treated in the storage tank 1 to farmland; A washing valve (5) for supplying the treatment target water treated in the storage tank (1) to washing water; Washing table (6) for collecting the water to be used as the washing water; Non-discharge tank 25 provided with the carbon filter 11 for receiving the treated water collected in the washing table 6 to remove the foreign matter; A strainer (10) for filtering and discharging the water to be treated treated in the discharge tank (25); And a control box 4 for controlling the operation of the inflow pump 7, the storage tank 1, the supply pump 25, and the non-discharge tank 11.

Specifically, the agricultural water treatment device of the present invention, while the irrigation water or river water adjacent to the farming workplace is introduced into the device using an inflow pump, the inflow pump is connected to a water level level switch to the water level of irrigation water or river water flowing into the device By adjusting the inflow, the suspended solids contained in the irrigation water or river water, E. coli is removed by using the filter means and the ultraviolet module, so that irrigation water or river water can be simply supplied to clean agricultural water without expensive equipment. .

In the present invention, the filter means 20 is characterized in that it comprises a primary filtration filter and a secondary filtration filter, the primary filtration filter is a cartridge type of Teflon material, the secondary filtration filter contains carbon It may be characterized by one cartridge type.

In the present invention, the filter means is characterized in that the check valve is installed in the inlet or drain, the ultraviolet module 2 may be characterized in that it comprises an ultraviolet lamp having a wavelength range of 200 ~ 290nm.

In another aspect, the present invention relates to a method for converting irrigation water or river water into agricultural reuse water, wherein the agricultural water treatment device removes suspended matter and microorganisms in irrigation water or river water.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

As shown in Figure 1, the agricultural water treatment device according to the present invention is to remove the suspended solids contained in the treatment target water introduced by the inflow pump (7), the inflow pump (7) for introducing the water to be treated into the apparatus Storage tank (1) having a filter means 20, an ultraviolet module (2) for sterilizing the water to be treated by the filter means 20 is removed, and a level switch (3) for detecting the water level of the water to be treated. ), A supply pump 12 for supplying the water to be treated in the storage tank 1 to farmland, a washing valve 5 for supplying the water to be treated in the storage tank 1 to the washing water, and used as the water for washing. Discharge tank (25) having a washing table (6) for collecting the water to be treated, the carbon filter (11) for receiving the treated water collected in the washing table (6) to remove foreign matters, the discharge tank ( To discharge the treated water treated in 25) by filtration. Renner 10 and a control box (4) for controlling the operation of said inlet pump (7), a reservoir (1), the feed pump 12 and a zero discharge tank (25).

In the present invention, the water to be treated means irrigation water or river water in the vicinity of the farming plant, and the inlet pipe 13 is installed in the irrigation water or river water in the vicinity of the farming plant, and the agricultural water treatment using the inflow pump 7 Flows into the device.

Inflow pump (7) according to the invention is connected to the level switch (3) provided in the reservoir (1) when the water level of the reservoir (1) is lower than the set level, to the irrigation water until the set level, reservoir or The water to be treated in the stream is pumped and supplied to the reservoir 1.

In the present invention, the agricultural water treatment apparatus removes the solid suspended solids contained in the irrigation water and river water by using the filter means 20 before being introduced into the reservoir (1), which is introduced into the apparatus by the inflow pump (7) Since the water to be treated is irrigation water or river water, it contains a large amount of solid suspended solids such as sand and fallen leaves, and is filtered by the filter means 20 before being introduced into the storage tank 1 of the agricultural water treatment apparatus.

In the present invention, the filter means 20 includes, but not limited to, a primary filtration filter and a secondary filtration filter, a plurality of filters may be used according to the use conditions. The primary filtration filter 8 is a cartridge type of Teflon, and removes at least 80% of suspended solids before introducing irrigation water or river water into the storage tank 1 of the agricultural water treatment device. In addition, the secondary filtration filter 9 is a cartridge type containing carbon, and completely removes the suspended solids not filtered by the primary filtration filter 8.

The filter means 20 according to the present invention is formed in the upper and lower openings and drains, respectively, and separated into two parts, the hollow case and the filter can be combined in the screw coupling method is configured to fill the filter, the filter Is easily contaminated with a new filter, in case the filter is contaminated and the water quality deteriorates, the filter means is contaminated by using check valves respectively installed at the inlet and the drain of the filter means 20. Can be diagnosed, and the already purified water to be treated flows back through the filter means so as not to mix with the water of low quality.

 In the present invention, the storage tank 1 is a space for storing the water to be treated by the suspended solids filtered by the filter means 20, the appearance is made of stainless steel for preventing corrosion, the ultraviolet module 2 therein And a level switch 3.

In the present invention, the ultraviolet module 2 combines a plurality of ultraviolet lamps to the quartz tube according to the flow rate in order to sterilize viruses, E. coli, etc. contained in the water to be treated, and the packing outside the quartz tube After inserting and sealing, it is installed radially on top of the main pipe. The number of installation of the ultraviolet module 2 is determined according to the wavelength of the ultraviolet lamp, the inflow of the inflow water, the interval of the ultraviolet lamp and the residence time of the inflow water. If the ultraviolet lamp installed in the reservoir is less than the design value, the sterilization effect on the microorganism cannot be properly obtained, and water is oxidized when the ultraviolet module 2 installed in the reservoir is excessively installed. Therefore, it is installed in an appropriate number to sufficiently sterilize the water to be treated.

In the present invention, it is preferable to use a lamp having a wavelength range of 200 to 290 nm, which is an ultraviolet C region, and more preferably a UV lamp having a wavelength range of 253 nm.

In the present invention, the water to be treated is kept in the reservoir for 5 minutes to 3 hours to completely sterilize E. coli, virus, etc. contained in the water to be treated by the ultraviolet module provided in the storage tank. If the water to be treated is maintained for less than 5 minutes, E. coli is not completely extinguished. If the water is maintained for 3 hours or more, water is oxidized. In the box 4 it is necessary to control the on / off of the ultraviolet lamp.

In the present invention, the level switch 3 adjusts and maintains the water level of the reservoir 1 constantly, and takes into consideration the number of treatment targets for water purification that can be supplied and accommodated in the reservoir 1 in consideration of the amount of purified water required by the user. The highest level is determined, and the set level is determined by the user's selection within the highest level. Substantially when the inlet pump is driven to continuously supply the object to be treated into the reservoir 1, the amount of the object to be supplied is greater than that discharged through the supply pump 12 or the washing valve 5 for a long time. If it is left as it is, the water in the reservoir overflows, and when the water level in the reservoir reaches a certain height, it is necessary to automatically stop the driving of the motor pump. At this time, the level switch in conjunction with the inlet pump to adjust the water level in the reservoir.

In the present invention, the supply pump 12 is the solids of the reservoir (1) is removed, supply the sterilized treatment water to the house or farmland, the washing valve (5) the farmers to wash the face or equipment after work Supply water used for cleaning. The washing valve 5 may be a manual valve which is directly opened and closed by a user, or may be an electronic valve that is opened and closed by a switch.

The used water after washing the washbasin or equipment is collected in the washing table 6, and the collected water is supplied to the non-discharge tank 25, and is polluted by the carbon filter 11 provided in the non-discharge tank 25. It is filtered and adsorbed. The water that has adsorbed and filtered the contaminants is discharged back to the irrigation canals and streams through the strainer 10.

In the present invention, the control box (4) is electrically connected to the driving means of the inflow pump (7), the reservoir (7), the supply pump (12) and the non-discharge tank (11), respectively, the inflow pump (7), the reservoir (7), the operation of the supply pump 12 and the discharge tank 11 is controlled, respectively.

The present invention introduces the water of the stream or reservoir through the inlet pipe 13 into the agricultural water treatment device 16, and then the filter stage 20 and the ultraviolet module 2 provided in the agricultural water treatment device. Use it to make pollutants and harmful substances such as suspended solids and E. coli contained in the treated water. As described above, the treated water from which the pollutants and the harmful substances are removed is supplied to the farmland through the water supply pipe 14, and is supplied to the wash water through the washing valve 5. In addition, the used washing water is introduced into the non-discharge tank 25 to remove contaminants using the carbon filter 11 provided in the non-discharge tank 25, and then back into the stream or irrigation water through the drain pipe 15. Since it is discharged to, using the agricultural water treatment device according to the present invention can be converted to agricultural reuse water (Fig. 2).

As shown in Figure 3, the method of treating with agricultural reuse water according to the present invention, the raw water is introduced, and the suspended solids are filtered through the primary and secondary filtration filters, and then treated water using an ultraviolet module. Not only can the various harmful microorganisms be removed, it can be used as agricultural water and washing water, and the contaminated water used as the washing water is collected again into a discharge tank, and the treated water from which the pollutants are removed by the carbon filter of the discharge tank is filtered. By being discharged into irrigation canals and streams, it is possible to obtain the effect that can be the most appropriate storage treatment facility in the reuse of irrigation water or river water as agricultural water.

Hereinafter, the present invention will be described in more detail with reference to the following examples. In conclusion, these examples are only for illustrating the present invention in more detail, it is obvious to those skilled in the art that the scope of the present invention is not limited by these examples in accordance with the gist of the present invention. something to do.

Example  1: Measurement of Treatment Efficiency of Agricultural Water Treatment System

1-1 Operating Conditions of Agricultural Water Treatment System

The water to be treated is irrigation water of the Hwahoe Complex in Daegu, and the agricultural water treatment device uses the inflow pump (Hanil PV-D230, Korea) as shown in FIG. The material to be treated and introduced into the device was suspended by a primary Teflon filter (Cheongsu Technophil, Korea) with a diameter of 200 mm and a height of 500 mm and a secondary carbon filter (Cheongsu Technophil, Korea) with a diameter of 200 mm and a height of 500 mm. After the filtrate was filtered, the treated water from which the suspended solids were filtered was supplied to a storage tank. The treated water supplied to the reservoir was inserted into a quartz tube with an ultraviolet lamp (Phillips, low pressure lamp 145W) in the 256 nm wavelength region at the top of the reservoir, and stayed in the reservoir equipped with one ultraviolet module for 5 minutes to perform sterilization process. It was. The water treatment target capacity of the agricultural water treatment apparatus is set to 10 ton / hr, and the size of the storage tank of the agricultural water treatment apparatus used is as follows.

Storage tank: W 1.5m × L 1.5m × H 1.5m, 3.4㎥

1-2 Of Agricultural Water Treatment Equipment Throughput  Measure

In the same manner as in Example 1-1, the treatment efficiency of the agricultural water treatment apparatus was analyzed for the influent, turbidity of the discharged water, SS, BOD _{5 ,} and water quality items of COD, and the results are shown in Table 1 below. The inflow water refers to the water to be treated before entering the agricultural water treatment device, and the discharge water refers to the water to be treated and discharged to the farmland in the agricultural water treatment device.

As a result, as shown in Table 1, turbidity and SS showed an average of 75% and 96.43%, respectively, and BOD ₅ and COD showed an average of 53.3% and 40%, respectively.

TABLE 1

Water quality item Turbidity (NTJ) SS (mg / L) BOD ₅ (mg / L) COD (mg / L) Influent 4 14 15 25 Discharge One 0.5 7 15 Average throughput rate (%) 75 96.43 53.3 40

1-3 Microorganisms in Agricultural Water Treatment System Throughput  Measure

In the same manner as in Example 1-1, the microbial bactericidal activity of the agricultural water treatment apparatus was measured and measured by the influx and discharge of E. coli. As a result, as shown in Table 2, 500 E. coli was detected in the influent, while E. coli was not detected in the discharge.

TABLE 2

E. coli classification E. coli Influent (MPN / 100ml) 500 / ea Effluent (MPN / 100ml) No detection Average Processing Efficiency (%) 100%

The specific parts of the present invention have been described in detail above, and it is apparent to those skilled in the art that such specific descriptions are merely preferred embodiments, and thus the scope of the present invention is not limited thereto. something to do. Thus, the substantial scope of the present invention will be defined by the appended claims and their equivalents.

1 schematically shows an agricultural water treatment apparatus according to the present invention.

2 is a layout view of an agricultural water treatment device according to the present invention.

Figure 3 is a block flow diagram showing a schematic configuration of an agricultural water treatment apparatus according to the present invention.

<Explanation of symbols for the main parts of the drawings>

1: reservoir 2: UV module

3: level switch 4: control box

5: washing valve 6: washing table

7: Inlet pump 8: Primary filtration filter

9: secondary filtration filter 10: strainer

11: carbon filter 12: feed pump

13: Inlet piping 14: Water supply piping

15: drain pipe 16: agricultural water treatment device

20: filter means 25: discharge tank

Claims (7)

Agricultural water treatment equipment, including: An inflow pump 7 for introducing agricultural water into the apparatus; Filter means (20) for removing suspended solids contained in agricultural water introduced by the inflow pump (7); A storage tank (1) having an ultraviolet module (2) for sterilizing agricultural water from which suspended matter is removed by the filter means (20) and a level switch (3) for sensing the level of agricultural water; A supply pump 12 connected with the storage tank 1 to supply agricultural water treated in the storage tank to farmland; A washing valve 5 connected to the storage tank 1 for supplying the agricultural water treated in the storage tank to the washing water; Washing table for collecting the agricultural water used as the washing water (6); Non-discharge tank 25 provided with the carbon filter 11 for receiving the agricultural water collected in the washing (6) to remove the foreign matter; A strainer (10) for filtration and discharge of agricultural water treated in the discharge tank (25); And Control box (4) for controlling the operation of the inflow pump (7), the reservoir (1), the supply pump (12) and the discharge tank (25). The agricultural water treatment apparatus according to claim 1, wherein the filter means (20) comprises a primary filtration filter (8) and a secondary filtration filter (9). The agricultural water treatment device according to claim 2, wherein the primary filtration filter is a cartridge type of Teflon material. The agricultural water treatment device according to claim 2, wherein the secondary filtration filter is a cartridge type containing carbon. The agricultural water treatment device according to claim 1, wherein the filter means is provided with a check valve at an inlet or a drain. The agricultural water treatment apparatus according to claim 1, wherein the ultraviolet module (2) includes an ultraviolet lamp having a wavelength band of 200 to 290 nm. A method for converting irrigation water or river water into agricultural reuse water, using the agricultural water treatment device of claim 1 or 6 to remove suspended matter and microorganisms in irrigation water or river water.

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