KR100857419B1 - High level purifying device for underground water - Google Patents

Abstract

An apparatus for advanced purification of underground water is provided to obtain clean and stabilized drinking water by purifying underground water and removing nitrates and fluorine from the purified underground water, and reduce maintenance and repairing costs, manufacture the facilities conveniently, and use the facilities semi-permanently by simplifying facilities and purifying underground water by a natural flow system. An apparatus(10) for advanced purification of underground water comprises: a water supply valve(20) for decompressing underground water supplied from a water source(12) and supplying the decompressed underground water; a first water purification tank(100) connected to the water supply valve to remove adulterations and vermin by passing underground water supplied from an upper side through a filter part composed of ocher balls; a second water purification tank(200) in which a filter part composed of activated carbon is formed to remove turbidity by naturally flowing down underground water supplied from the first water purification tank through the activated carbon; an ion exchange tank(300) in which an exchange chamber filled with an exchange agent is formed to remove nitrates and fluorine by ion exchanging underground water supplied from the second water purification tank, the exchange agent being formed of PAHs(Polycyclic Aromatic Hydrocarbons), the ion exchange tank including a porous plate formed in an upper side of the exchange chamber to protect the exchange agent by preventing underground water supplied from a water supply pipe from being supplied concentratively all at once; a spray mesh formed directly above the porous plate to spray underground water; a strainer installed on a fixing plate formed in a lower part of the exchange chamber of the ion exchange tank such that ion exchanged underground water flows through the strainer; a temporary water storage tank(14) which is installed between the fixing plate and the exchange agent, and in which underground water is stored temporarily to flow underground water through the strainer slowly; and a discharge pipe installed on one side of the water supply pipe to discharge backwashing water after backwashing.

Description

High level purifying device for underground water

1 is a side view of an advanced water purification device for groundwater according to the present invention,

Figure 2 is a side view showing an example of a water purification tank applied to the ground water purification device according to the present invention,

3 is a front view of the ion exchange tank applied to the present invention,

Figure 4 is a side cross-sectional view of the ion exchange tank applied to the present invention,

5 is a plan view showing the inside of the ion exchange tank applied to the present invention,

6 is an enlarged cross-sectional view of the main portion of the present invention;

7 is another enlarged cross-sectional view of the main part of the present invention;

8 is a schematic diagram showing a water purification process of the groundwater purification apparatus according to the present invention.

* Explanation of symbols for the main parts of the drawings

10: groundwater purification device 100: first water purification tank

110: cover 120: reservoir

140: filter unit 150: filter medium

200: second water purification tank 300: ion exchange tank

310: cover 310: exchange room

The present invention is a water purification device to purify the ground water to be used as drinking water, and more specifically, the ground water is purified in the first and second, and again to remove the harmful nitrogen and fluorine through ion exchange to stabilize the groundwater The present invention relates to an advanced water purification device for groundwater using an ion exchange resin that can be used as purified drinking water.

In the future, it was announced that Korea would become a water shortage country. However, if you look at the domestic situation, in order to utilize groundwater efficiently in the situation where the dependence on the groundwater is less than 5%, it is urgent to change the accident to the existing water management policy that recognizes the groundwater resources as waste water or auxiliary water. .

Therefore, active support for specialized research institutes should follow in order to foster groundwater specialists, which involve a shift in public awareness and the establishment of a legal system. In particular, groundwater is emergency water prepared for emergencies such as drought, flood, water quality accident, nuclear accident or terrorism, and it is a high quality drinking water that can improve people's health and quality of life. And it is a circular strategic resource that requires constant use management.

At present, the main pollutants contained in domestic groundwater are nitrate nitrogen and phosphorus.

Nitrate is a major contributor to the use of fertilizers, spoiled food and animal and livestock waste, illegally dumped waste, industrial waste, manure, and airborne debris, and is contaminated by prolonged osmosis. Is higher than the nitrite concentration.

Nitrate concentrations in water are generally above 5 mg / L, but in some small water sources they may exceed 10 mg / L. The general concentration of nitrate in water is about 2mg / L ~ 20mg / L, and when nitrate ion (NO ₃ ^-1 ) is present in drinking water, it is converted into nitrite ion (NO ₂ ^-1 ) by reducing action in the digestive organs. It is known to cause cyanosis when ingested by infants, and nitrate ions (NO ₃ ^-1 ) and nitrite ions (NO ₂ ^-1 ) are likely to form N-nitroso compounds suspected of carcinogens. Has been reported.

Especially, in Korea, the dependence of drinking water on groundwater resources due to lack of water resources is high, so even though there are many simple water supply facilities, old age or facilities of management are neglected, so turbidity, general bacteria, E. coli, nitrate nitrogen, It is difficult to use drinking water because fluorine and so on exceeds the drinking water quality standards.

In addition, since most facilities do not have water purification facilities such as filtration, they are simply stored using water tanks or disinfected by chlorine, and then supplied.

Moreover, the pollution of groundwater is inevitably intensified by human activities, agricultural activities, and population growth. Therefore, it is urgent to prepare countermeasures.

Accordingly, the present invention has been made in view of the above-described conventional problems, and an object thereof is to purify the groundwater through the first and second stages by using a purified water tank having a micro filter layer, and to remove nitrogen salts and fluorine from the purified groundwater. It is to provide a high-altitude water purification device for groundwater to obtain clean and stabilized drinking water.

Another object of the present invention is to provide a high-purity water purification device for groundwater that can be used in a simple and natural way, the water purification is not necessary, maintenance is unnecessary, can be reduced costs, and the production is convenient and semi-permanent have.

An object of the present invention is to provide a water purification device to be used as drinking water, the water supply valve for supplying a reduced pressure of the ground water supplied from the water supply source; A first water purification tank connected to the water supply valve, the ground water supplied from the upper side passing through a filter part made of ocher balls and removing impurities and pests; A second water purification tank having a filter part formed of activated carbon therein to remove turbidity by passing the activated carbon in a natural flow manner through the ground water supplied from the first water purification tank; It is achieved by the technical feature consisting of; ion exchange tank for removing nitrate and fluorine through ion exchange the ground water supplied from the second water purification tank, and temporarily storing and supplying it.

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

First, Figure 1 attached is a side view of the high water purification device for groundwater according to the present invention, Figure 2 is a side view showing an example of a water purification tank applied to the high water purification device for groundwater according to the present invention, Figure 3 is It is a front view of the ion exchange tank applied to this invention.

4 and 5 are a cross-sectional view and a plan view of an ion exchange tank applied to the present invention, and FIGS. 6 and 7 show enlarged cross-sectional views of main parts of the present invention.

In the drawings, the water purification apparatus of the present invention may be used to purify the groundwater to be used as drinking water, but may be used for other applications, such as lakes, rivers, valley water or other industrial water, depending on the case.

The water purification device 10 of the present invention is a water supply valve 12 for controlling and supplying the water pressure of the ground water pulled up by the water supply source 12, for example, pumping, and the ground water supplied through the water supply valve 20 to the primary water purification The first purified water tank 100 and the second purified water tank 300 connected to the first purified water tank to re-purify the ground water supplied to the tank and ground water purified primary and secondary through ion exchange It is composed of an ion exchange tank 300 for removing nitrogen and fluorine, the backwash pump 300 and the backwash blower 40 is installed.

First, the water supply valve 20 is a pressure reducing valve, so that water is easily supplied to the first water purification tank by adjusting the pressure of the water supply.

The first water purification tank 100 is produced by rolling a stainless plate in a circular shape, a synthetic resin material is used as necessary.

The first water purification tank 100 is covered with a cover 110, which is assembled by bolts and nuts as shown in the figure so that the installation, replacement and repair of the filter unit 140 installed therein is possible. Of course, the cover can also be assembled using a fit or pin.

On the other hand, the upper one side of the first water purification tank 100 is provided with an inlet pipe 102 is connected to the water supply valve 20, the bottom is provided with a discharge pipe 104 for discharging purified valley water , A blower pipe 42 for backwashing is provided, and a discharge pipe 52 for discharging the backwash water to the lower side of the central part of the water inlet pipe 102 is provided.

In the upper portion of the internal water tank 120 of the first water purification tank 100, a water plate 130 having a porous plate type is seated on the locking jaw 132 protruding to the inner surface of the water purification tank, and the lower portion of the water supply plate 130. The filter unit 140 to be described later is provided according to the control unit 160 to adjust the gap by pressing according to the low water of the valley water.

In other words, the control unit 160 temporarily stores the valley water away from the water supply plate 130 to gradually supply water to the filter unit 140. At this time, the control unit 160 moves downward and presses the filter unit by the weight of the stored valley water. will be.

The filter unit 140 is seated in a water reservoir so that the valley water supplied from the upper side control unit 160 passes in a natural flow manner and is purified, and consists of a tubular body 142 and a filter medium 150.

In other words, the donut-shaped outer tube 146 in the center of the valley water is easily provided to the drainer 144, and the filter medium 150 is filled in the outer tube 146, but the outer tube Drainage holes are formed so that the valley water passing through the filter medium is discharged through it.

Here, the filter medium filled in the first water purification tank is an ocher ball, the size of which is about 5 mm, and a gauge 112 for checking the internal pressure is provided so that if the pressure of the tank is too high, a water supply valve or a backwash pump and a backwash blower are used. It operates to control internal pressure.

The second water purification tank 200 is made of the same structure as the first tank, the activated carbon is filled with a filter material filled in the outer tube of the filter unit to remove turbidity.

Accordingly, the second tank is connected to the outlet pipe 104 and the inlet pipe 202 provided at the bottom of the first water purification tank by the connecting pipes 22, and the outlet pipe provided at the bottom of the second tank again. 204 and the ion exchange tank 300 is a configuration that is connected by the connecting pipe (22).

The ion exchange tank 300 is formed in a cylindrical shape by rolling a stain race, provided with a support at the bottom to ensure stable and easy construction, transparent material such as transparent acrylic in the center of the cylinder to be visible inside the center of the cylinder A viewing window 306 is provided so that the inside can be seen by installing on a part or the whole part.

Cover 310 is installed on the upper portion of the ion exchange tank 300, the cover 310 is a bolt as shown in the figure to be opened during maintenance, repair of the device, replacement and replenishment of the internal ion exchange filler 312, assembled by a nut.

Of course, in addition to these bolts, nuts can also be manufactured, assembled by fitting, in some cases fusion.

On the other hand, the ion exchange tank 300 according to the present invention is separated into the first and second ion exchange tanks 300, 300a are each connected to the second water purification tank, which facilitates the purification of groundwater In addition, to allow sufficient groundwater to be secured so that the groundwater can be used in the dry season, and also to allow them to be selectively operated.

That is, when any one of the first and second ion exchange tanks 300 and 300a stops operation or stops for backwashing, the other ion exchange tank operates or only one of the two ion exchange tanks is fixed for a predetermined time. May be run for a while and other tanks may be run during the idle period.

Of course, the structure of the first and second ion exchange tanks 300 and 300a is the same, and in the present invention, reference numeral 300 will be described based on the first ion exchange tank.

An exchange chamber 320 is provided inside the ion exchange tank 300, and an ion exchange agent 350 is filled in the exchange chamber to remove nitrate and fluorine. Examples of the ion exchange agent include polycyclic aromatic hydrocarbons (PAHs). ) Is used. Of course these ion exchangers are present in the form of gel resins.

On the upper side of the exchange chamber 320, that is, directly above the ion exchanger, a porous plate 340 is installed to protect the ion exchanger and ensure smooth water supply.

The porous plate 340 is to protect the divorce exchange agent from the water pressure when water supply of groundwater, and to allow the groundwater to be gradually supplied.

Similarly, in the present invention, the spray net 330 is provided on the upper portion of the porous plate 340. That is, the spray network 330 connected to the water supply pipe 302 prevents the ground water supplied from the water supply pipe at a time and intensively being sprayed, and the network supplies the ground water evenly to the lower plate.

On the other hand, a fixed plate 360 is installed below the ion exchange chamber 320. The fixed plate 360 temporarily collects groundwater that has undergone ion exchange, and is discharged to the reservoir through the stator 352.

The stainer 352 is installed on the upper surface of the fixing plate 360, as shown in Figure 4, the concentric with the handle 362 is installed in the center of the fixing plate has a structure arranged in plurality. The stainer 352 installed on the fixing plate 360 has a plurality of comb teeth 352a upwardly, that is, installed in a triangular shape so that groundwater flows out between these comb teeth, thereby gradually draining the groundwater of the journal reservoir 322. To discharge.

The temporary reservoir 322 is provided at the lower side of the exchange chamber, and temporarily stores the groundwater from which nitrogen salts and fluorine have been removed to be sent to the storage tank 14, and the temporary reservoir can secure a large amount of groundwater. Make sure

The water discharge pipe 304 flowing out to the bottom of the ion exchange tank supplies the ground water purified to the water storage tank, and the backwash tank 40a is provided adjacent to the water storage tank.

The backwash tank 40a is provided to supply the required washing water for backwashing. The backwash pump 30 is connected to the tank, and the backwash pump 30 supplies backwash water in communication with the water outlets of the respective tanks. The backwashing pipes 32, 34, 36 and 38 are piped.

In addition, the blower 40 which is operated at the time of back washing is also provided with the vent pipes 42, 44, 46 and 48 connected to the respective tanks.

In addition, a pressure gauge 311 is installed on the upper portion of the first and second ion exchange tanks to check the internal pressure and basically ranges from 1 to 10 Kg / cm 2.

Next, look at the water purification process of the present invention made of such a configuration as follows.

First, the groundwater sent from the water supply source 12 flows into the first water purification tank 100 through the water supply valve 20. Groundwater introduced into the first water purification tank 100 is passed through the filter medium, that is, ocher balls, and deciduous debris, pests, etc. are removed, and is sent to the second water purification tank 200 through the bottom discharge pipe 104.

The groundwater sent to the second water purification tank 200 falls from the top to the bottom, similarly to the first water purification tank 100, that is, passes through the filter material made of activated carbon in a natural flow manner and removes turbidity.

After the second purification, the groundwater is sent back to the ion exchange tank 300 to remove nitrate and fluorine through ion exchange, and the reaction equation is as follows.

_{^{R + Cl - + NO 3 -}} → R + NO 3 - + Cl -

The basic water quality of the treated ground water, ie fluorine (F) is 5PPM, nitrate nitrogen (NO₃) is 25PPM, fluorine (F) is 1.0PPM (legal water: 1.5PPM or less), nitrate nitrogen (NO₃) It is treated and discharged at less than 6 PPM (legal water: 10 PPM or less).

As described above, the present invention is to supply the ground water of the purified water through the first and second water purification tank to the ion exchange tank to remove the nitrate and fluorine, so that it can be used as drinking water.

In addition, the present invention has an effect that can remove the impurities, such as deciduous debris, pests, pathogenic bacteria as well as nitrate, fluorine through the water purification process.

Claims (5)

In the water purification device to purify the ground water to be used as drinking water, A water supply valve for supplying a reduced pressure of the ground water supplied from the water supply source; A first water purification tank connected to the water supply valve, the ground water supplied from the upper side passing through a filter part made of ocher balls and removing impurities and pests; A second water purification tank having a filter part formed of activated carbon therein to remove turbidity by passing the activated carbon in a natural flow manner through the ground water supplied from the first water purification tank; An exchange chamber filled with an exchange agent made of hydrocarbons (PAHs) is provided therein to remove nitrate and fluorine from the groundwater supplied from the second water purification tank through ion exchange, and the ground water supplied from the water supply pipe at the upper side of the exchange chamber is temporarily An ion exchange tank having a porous plate to protect the exchange agent by preventing water from being concentrated in the water; A spraying net provided at an upper portion of the porous plate to distribute and supply groundwater; A stationer installed on a fixed plate provided at a lower portion of the exchange chamber of the ion exchange tank to allow the groundwater which has undergone ion exchange to escape, but for the groundwater to escape through the comb teeth set in a triangular shape; A temporary reservoir provided between the fixed plate and the exchange agent to temporarily store the groundwater so as to gradually escape through the stainer; And a discharge pipe provided on one side of the water supply pipe provided on the upper side of the ion exchange tank to discharge the backwash water after backwashing. delete delete delete delete

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