KR20110000955A - Water treatment method and the apparatus for purified water using natural water - Google Patents

Abstract

PURPOSE: A water treatment method for obtaining purified water, and a water treatment apparatus used for the method are provided to remove nitrate nitrogen, pigments, phenol, and agricultural medicine components from water. CONSTITUTION: A water treatment apparatus for obtaining purified water capable of using as drinking water and industrial water comprises a upturn filtration type bio-filter separation tank and an ozone supply unit(20). A water treatment method using the apparatus comprises the following steps: inserting ozone to processing water(1) inside an ozone treatment reaction bath(10) for obtaining ozone absorbed water; supplying oxygen(O_2) to a filter media filling a media layer using the ozone absorbed water, after flowing the ozone absorbed water to the bio-filter separation tank; and passing the processing water through a filter layer or a reverse osmosis device, after removing foreign materials.

Description

Water treatment method and the apparatus for purified water using natural water to obtain purified water suitable for drinking or industrial water by using river, river water and ground water

The present invention relates to a water treatment method for obtaining purified water suitable for drinking or industrial water, and more specifically, to ammonia nitrogen or nitrate nitrogen to be suitable for drinking or industrial water using river, river water and ground water. The present invention relates to a water treatment method for removing chromaticity, phenol, pesticide components and the like, and a water treatment apparatus used therefor.

In recent years, water shortages are accelerating due to climate change due to global warming, and as droughts persist in Korea, we are receiving limited water supply in Gangwon, Jeolla, and Chungcheong areas, and supplying drinking water using fire trucks or water lines. The company is experiencing water shortages and is proposing 10 water conservation tasks in preparation for prolonged drought.

Korea's per capita rainfall is 'an international organization' recognized by water shortages, which is only one-tenth of the world average, and the demand for water has been increasing continuously due to our economic growth and improved living standards. In spite of the increase in water supply facilities, residents are receiving limited water supply this year, and this shortage of water is likely to intensify further. The environmental impact assessment report that the coal mine area is contaminated by heavy metals such as valleys, tunnels and groundwater is urging us to take urgent countermeasures.

The present application includes water containing ammonia nitrogen, nitrate nitrogen, chromaticity, phenol, pesticide components, and the like, and an upward filtration biofilm separation tank including an ozone supply device and a membrane separation filtration layer. The present invention was completed by confirming that sterile purified water suitable for drinking or industrial water can be provided through a water treatment system applied as a basic configuration or an electrolytic device added to the basic configuration.

Most of Korea relies on surface water such as rivers, lakes, etc., and water pollution to water is a serious national problem. Recently, due to climate abnormalities and droughts, the quality of water is 4 ~ 5 grades. It is getting worse and reaches the state which cannot use as water supply.

In order to improve the water supply, pre-chlorination or pre-ozonation treatment is currently performed, but in the former case, THMs, which are carcinogens, are produced in the latter case, and ammonia nitrogen (NH4-). N) has not been eliminated and is not a fundamental solution.

The conventional water treatment system has been mainly used for physicochemical processes such as flocculation, sedimentation, sand filtration, disinfection, etc., but there have been environmental problems due to the use of chemicals. It is not removed, it increases the scaling of pipes and causes the deterioration of water quality, and there is a concern that chlorine used in the disinfection process can combine with organic matter in the water to produce carcinogenic substances. Membrane separation processes are widely used.

Membrane separation process is a technology that removes contaminants by using a membrane having micropores that can separate materials of a specific size. The membrane is a microfiltration (MF) membrane, an ultrafiltration membrane (UF) membrane, or a nanoparticle. It is divided into filtration (NF) membrane and reverse osmosis (RO) membrane, and the membrane separation process has the advantage that the treatment water quality is stable and the automation is easy, and the maintenance is easy, but the cost is too high in large water treatment systems. Currently, most of the small-scale water purifiers at home are mainly used as membrane filter.

Korea is attempting to apply the membrane separation process to small facilities in part, and since July 2009, it is preparing to apply the membrane separation process to large-capacity facilities of 5000 tons or more per day. The company plans to pilot a 25,000-ton membrane separation advanced water treatment project, but the question is how good the quality of water sent to the membrane separation process can be.

It is a process that removes suspended substances and degradable organic substances that occur in general water treatment process, and is usually treated by combining physicochemical process and biological process. High-treatment processes hardly decomposable organic substances, nutrients (nitrogen, phosphorus) and heavy metals. As a biological treatment method is used as a removal process, a biological membrane separation method combining a biological treatment method and a membrane separation method may be proposed as a preferable alternative.

In addition, until now, to obtain a water supply source, water of secondary level or more is removed from the upper water purification plant or reservoir to purify the suspended solids, and then, flocculant is administered, and when foreign matter particles in the water meet with the flocculant to form a floc, the precipitate is precipitated. After sterilization using fluorine and chlorine through the following filter, the system was sent to each household.However, if the water shortage condition becomes more severe, there may be a situation where drinking water from the third and fourth grade water may be purified and consumed. Research must be preceded.

In view of the above water shortages, the company has relatively low pollution to heavy metals and contains trace amounts of ammonia nitrogen, nitrate nitrogen, color, phenol, pesticides, etc., which are unsuitable for drinking or industrial use, such as river, river, and groundwater. Water is applied to the basic configuration included in the upward filtration biofilm separation tank including the ozone supply device and membrane separation filtration layer provided herein, or remaining through the water treatment system of the configuration in which the electrolytic device is added to the basic configuration. The purpose of the present invention is to remove heavy metals, ammonia nitrogen, nitrate nitrogen, chromaticity, phenol, pesticides, etc., and to obtain purified water through the final membrane separation filtration layer to provide drinking water supply or industrial water supply system. Have

The present application as a means for solving the above problems, a water treatment method for providing purified water suitable for drinking or industrial water, the water treatment apparatus for obtaining purified water suitable for drinking or industrial water includes an ozone supply device and a membrane separation filtration layer The above object can be achieved through a water treatment system having a basic configuration included in an upward filtration biofilm separation tank or an electrolytic device added to the basic configuration.

The water treatment system provided herein draws water of at least two grades from rivers, rivers, groundwater or reservoirs to obtain drinking water sources or industrial waters for drinking water, and is an upward filtration biofilm including the ozone supply device and membrane separation filtration layer of the present invention. In order to provide purified water by discharging it through a separation tank, first, a pretreatment process is required to make ozone dilution water by introducing ozone into the ozone treatment reaction tank together with the water to be treated, and separating the pretreated ozone-containing water into an upward filtration biofilm. It is sent to the tank to supply biodegradable oxygen (· O) and oxygen (O ₂ ), which are the decomposition products of ozone, from the filter layer of the activated filter or zeolite filled in the filtration layer of the upward filtration biofilm separation tank to generate bioactive carbon. Removal of Nitrate Nitrogen, Color, Turbidity, Phenol, and Pesticide Components in Water to be Treated Through the Media Layer It has a technical idea that to.

Ozone flowing into the ozone treatment tank is usually decomposed in water at room temperature of 20 ℃ for about 15 ~ 30 minutes, so the ozone treatment tank does not directly put high concentration of ozone into the up-filter biofilm separation tank. First, ozone is dissolved / diluted in an appropriate concentration and sent to the upward filtration biofilm separation tank of the present invention. While producing, removal of nitrate nitrogen, color, turbidity, phenol, and pesticide components in the water to be treated is removed.

The upward filtration biofilm separation tank provided herein has an inner tube and an outer double tube structure as its center, and performs filtration and backwashing processes. It is provided with a structure that incorporates an air spray pipe for backwashing, and when performing the filtration process, an upflow filtration process in which the treated water flowing through the exterior is discharged to the upper portion through the filter bed of the lower portion of the upward filtration biofilm separation tank is provided. When the backwashing process is performed, filtration and backwashing are performed by including a means for blowing the high pressure air to the upper by using an air spray pipe in the center of the inner tube to pull up the lower media layer to the top and then disperse it again. It has a possible structure, and the activated filtration biofilm separation tank of the present application is activated carbon, anthracite or geo When the treated material flowing through the external filter layer has a filter layer selected from the sample, the high concentration of ozone supplied from the ozone supply device is diluted in the treated water in the ozone treatment reactor and the filter layer of the upfiltration biofilm separation tank. Oxygen, a product of ozone, and oxygen generated by oxygen are supplied from the filter layer of the upward filtration biofilm separation tank to oxygen, such as activated carbon, anthracite, or zeolite, and remain in the treated water while forming a biofilter layer. The invention is completed by confirming that ammonia nitrogen or nitrate nitrogen, color, turbidity, phenol, pesticide components can be removed.

In the water treatment system of the present invention, the upward filtration biofilm separation tank removes residual ammonia nitrogen or nitrate nitrogen through the biofilter layer provided under the biofilm separation tank, and separates the filtered water from which the denitrification process is completed. It has a system for discharging through the membrane separation filter layer provided in the upper part of the tank, and when the filtration performance is deteriorated, a backwashing process can be performed from time to time to reactivate each function and then used again. Is discharged after passing through the membrane separation filter, the membrane separation filter is a tube type filter, a BAG filter, a microfiltration (MF) membrane, an ultrafiltration (UF) membrane, a nanofiltration (NF) membrane, a reverse osmosis (RO) membrane, It may be selected from among the hollow fiber membranes.

In addition, in the present application, it may be preferable that the electrolytic device is added to the basic configuration included in the upward filtration biofilm separation tank including the ozone supply device and the membrane separation filtration layer, and pulled from a river, a river, a groundwater or a reservoir, etc. If the water to be purified contains heavy metal components such as lead or cadmium or contains fluorine, the electrolytic device should be added. It is desirable to be provided to kill the, and the electrolytic device may be provided as a separate device to go through the electrolytic process, but in a small treatment facility is installed / installed in the ozone treatment tank to remove heavy metal components or fluorine components in the pretreatment step or Or the upper space membrane of the upfiltration biofilm separator It is installed at a position between the Lee filter paper and the filter material up shade can be used.

Accordingly, the present application is a water treatment method for obtaining purified water suitable for drinking water or industrial water, wherein the water treatment system for obtaining purified water suitable for drinking water or industrial water includes an upward filtration biofilm separator and an ozone supply means. Including ozone supply means to obtain the ozone-containing water by performing the pre-treatment process of injecting ozone from the ozone treatment reaction tank to make the ozone-containing water, and to send the ozone-containing water to the upward filtration biofilm separation tank In addition, the ozone-containing water introduced into the upward filtration biofilm separation tank is supplied to the filter medium filled with the filter bed to provide the generator oxygen (· O) and oxygen (O ₂ ), which are decomposition products of ozone, to promote the filter bed, Water to be discharged through the membrane separation filtration layer after removing nitrate nitrogen, color, turbidity, phenol, and pesticide components in the treated water. It provides a method, and in addition to the upward filtration biofilm separation tank and the ozone supply means may be provided to add an electrolytic device to promote the heavy metal removal effect, the membrane separation filtration layer used in the upward filtration biofilm separation tank is TUBE It has a technical idea of a water treatment method selected from a type filter, a BAG filter, a microfiltration (MF) membrane, an ultrafiltration (UF) membrane, a nanofiltration (NF) membrane, a reverse osmosis (RO) membrane, and a hollow fiber membrane.

In addition, the present application is a water treatment apparatus for obtaining purified water suitable for drinking water or industrial water, the water treatment apparatus is provided in a configuration comprising an ozone supply means and an upward filtration biofilm separation tank, the ozone supply means is a treatment To supply ozone to the target water, and to send a certain concentration of ozone-containing water to the upfiltration biofilm separation tank, it has an ozone injection pipe, an ozone injection control valve and an ozone injection pipe, and supplies the treated water to the upfiltration biofilm separation tank. It has an ozone supply means, and the upward filtration biofilm separation tank has an inner tube and an outer double tube structure to its center, and the water to be treated is introduced through the exterior, and the inner tube is provided with a built-in air spray pipe for backwashing, At the time of performing, the treated water flowing in through the exterior is separated through the filter bed under the upward filtration biofilm separator. The upflow filtration process of the structure discharged through the filtration layer is carried out, and when performing the backwashing process, the high pressure air is blown to the upper part by using an air injection pipe in the center of the inner tube, and the lower media layer is pulled up and dispersed again. It includes a means for dropping and is provided to have a filtration and backwashing function, and ozone-containing generators oxygen (O) and oxygen (O), which are decomposition products of ozone, in the filter media layer filled in the filtration layer of the upward filtration biofilm separation tank. ₂ ) Providing the activation of the filter media by supplying the filter media and removing the nitrate nitrogen, the color, the turbidity, the phenol, and the pesticides in the treated water passing through the filter media, and then passing through the membrane separation filtration layer. And, the electrolytic device is added to the ozone supply means includes the technical idea to promote the heavy metal removal effect.

Detailed installation application examples and the like that make up the technical configuration of the present application will be described in detail with reference to the drawings in the following description 'details for carrying out the invention'.

In order to prepare for water shortages nationwide, our company has a small amount of ammonia nitrogen, nitrate nitrogen, phenol, pesticides, etc. in low-grade water that is relatively less polluted. Water, such as rivers and groundwater, can be treated as a drinking water source or industrial water at low cost by treating it with an ozone supplying device, an electrolysis device, and an upward filtration biofilm separation tank including a membrane separation filtration layer. It has the effect of providing a degree of purified water.

Hereinafter, embodiments of the present invention for implementing the technical concept of the present invention will be described with reference to the accompanying drawings, and the terms or words used in the specification or claims of the present application are to be interpreted in a conventional or dictionary sense. The protection scope of the present application should be interpreted as meanings and concepts corresponding to the technical idea of the invention, and the examples described herein are merely one of the most preferred embodiments of the present invention and represent all the technical ideas of the present invention. It is to be understood that there may be various equivalents and variations in place of them at the time of the present application.

1 illustrates an ozone treatment reactor 10, an ozone supply device 20, and an upward filtration biofilm separation tank 100 as a treatment apparatus to which the technical idea of the present disclosure is applied.

The ozone treatment reaction tank 10 of the present application supplies ozone dilution water to the upward filtration biofilm separation tank 100 by maintaining ozone concentration by supplying ozone to the water to be treated (1), ozone The supply device 20 has an ozone injection pipe 21 and an ozone injection valve 22, the ozone injection pipe 21 is connected to the lower part of the ozone treatment reactor 10, and the end of the ozone injection pipe 21 is ozone powder. The ozone supply amount is controlled such that the injected water (1) has an ozone concentration in the range of 10 to 50 ppm, and the ozone treatment reaction tank 10 is configured to inject ozone into the water through a sub aerator 23. With the partition 11 at the center, the ozone concentration measuring sensor 24 is connected to the ozone injection valve 22 at the stage before the partition, and the treated water 1 introduced therein is within a certain range of concentration, for example, 10 to 10 The ozone supply amount is adjusted to have an ozone concentration in the range of 50 ppm, and the ozone concentration is adjusted. The water to be treated is passed to the pump chamber 13 through the outlet 12 above the partition 11, and the pump chamber 13 is provided with two pumps 14, and a predetermined amount of the water to be treated is transferred to the biofilm separation tank 100. It is shown that it can be provided in a configuration having a circulation line 15 and a supply line 16 for circulating the excess amount.

The upward filtration biofilm separation tank 100 of the present application is provided with the inner tube 30 and the exterior 40 double pipe structure installed as a bell at the center of the biofilm separation tank as a center thereof, and the treatment object introduced from the ozone treatment reaction tank 10. The water 1 floats upward through the filtration layer 50 through the outlet 42 of the lower part via the exterior 40 and then through the overflow wall 80 through the membrane media layer 70 and the outlet 81. And discharged to the inner side of the exterior 40, which has a spiral or screw-shaped blade 43 and guides the water to be treated 1 to the outlet 42 of the lower portion to flow to the filtration layer 50. In addition, the filter layer 50 may include a filter medium 51 selected from sand, zeolite, anthracite, ceramic, and ion exchange resin, and may be embedded in the activated carbon, and filter contaminants in the water to be treated (1). In addition to the giving function, the ozone injected during the inflow process of the treated water (1) Oxygen and generator oxygen are separated into oxygen and generator oxygen [O _3- > O ₂ + O] at 0), and oxygen and generator oxygen supply oxygen to filter media such as activated carbon, anthracite, and zeolite to form biofilter layers. It is possible to remove ammonia nitrogen or nitrate nitrogen remaining in the.

The filter layer 50 of the bottom of the biofilm separation tank 100 of the present application has a screen net 52 provided with activated carbon and an anthracite or a geolite, and is made of a stainless steel material surrounding the filter layer. The sludge adhering to the filter medium 51 is separated, and the sludge is separated into the sludge storage tank 60 at the bottom of the filtration device, and the sludge is separated into the sludge withdrawal pipe 61 and the withdrawal pump 62. It is either sent to or sent to a place where a separate microorganism is needed.

In addition, the residual water in a state including some sludge and scum layers in a residue state does not pass through the filtration layer 50 among the water to be treated 1 introduced from the ozone treatment reactor 10. A residual water storage tank 70 is provided between the outlet 42 of the biofilm separation tank 100 and the sludge storage tank 60, and a synthetic resin strainer 71 is loaded at the upper portion of the residual water storage tank 70. The filter medium layer is stacked thereon, and the residue which does not pass through the filtration layer 50 and flows into the residual water storage tank 70 passes through the circulating pump 73 through the withdrawal valve 72 to return to the ozone treatment reaction tank ( 10) it is preferable to make more clear water to be added back to the biofilm separation tank (100).

The effluent filtered through the biofilm separation tank 100 of the present application passes through the membrane separation filter layer 80 provided on the upper side and is discharged to the discharge pipe 83 through the overflow wall 82 or through the filter layer provided separately. The membrane separation filter layer may be discharged from a tube type filter, a BAG filter, a microfiltration (MF) membrane, an ultrafiltration (UF) membrane, a nanofiltration (NF) membrane, or a reverse osmosis filtration device as a separate filter layer. It can be provided as Reverse Osmosis System or hollow fiber membrane to improve filtration efficiency.

An air spray nozzle 81 is provided on the membrane separation media layer 80 of the present application, and a pipe of the air spray nozzle 81 is connected to an air compressor to blow high-pressure air so that the membrane separation media layer 80 is provided. It is desirable to increase the separation efficiency by blowing the high pressure air intermittently.

In FIG. 2, when the filtration process of FIG. 1 is performed, the backwashing process is performed when the water purification function drops. FIG. 2 is a side cross-sectional view of the filtration apparatus for explaining the backwashing system. The components are used as they are and are shown in the drawing of the internal perspective to explain the backwashing process.

The filtration device 100 of the present application has a double tube structure with an inner tube 30 and an outer tube 40 as a center thereof, and the treated water 1 introduced through the supply line 16 of the ozone treatment reactor 10 includes a biofilm separation tank. When the filtration system is formed through the outlet of the lower portion of the lower portion of the filter layer 50 and flows upward through the filtration layer 50, the contaminants in the filter layer 50 loses the filtration function. In the method of performing backwashing, first, the treatment target water 1 supply pump 14 shown in FIG. 1 is stopped and the inlet valve 16 is blocked, and then the discharge valve 62 is opened to open the biofilm separation tank ( Adjust the water level in the inner tube 30 to the upper end 31 or lower of the inner tube 30, and then operate the compressor to pressurize the high-pressure air through the air spray pipe 32 provided in the inner tube 30 center. As the water was pushed upwards, the media 51 of the filtration layer 50 in the lower portion Lifting up and ejected to the upper end 31 of the inner tube 30, the upper end 31 of the inner tube 30 is provided with a filter medium upwards saddle 34, the filter medium is ejected by the lower pipe upwards blocking (34) fall down the inner tube It is possible to form a backwashing system that forms a mediator layer 50 which is caught by the media spray plate 33 having an inclination angle formed around the outer side of 30 and falls down to shake off sludge again. have.

The technical concept of the present invention contains a little ammonia nitrogen, nitrate nitrogen, phenol, pesticides, etc. in the low-grade water, which is relatively less polluted, and is suitable for drinking water or industrial use. Is treated with a water treatment system comprising an upfiltration biofilm separation tank comprising an ozone supply device and a membrane separation filtration layer provided herein, so that it can be used as a water source or industrial water at low cost, or a more complete treatment. It includes the idea of adding an electrolytic device for the purpose.

Figure 3 is to show the water treatment system of the configuration in which the electrolytic device is added to the basic configuration included in the upward filtration biofilm separation tank including the ozone supply device and the membrane separation filtration layer in the water treatment device of the present application is added. will be.

FIG. 3a illustrates a configuration in which an electrolytic device is added to the ozone treatment reactor 10, and FIG. 3b illustrates a configuration in which an electrolytic device may be added to the upward filtration biofilm separation tank 100, and FIG. An example of a configuration in which a reverse osmosis filtration device is added to the basic configuration of an ozone treatment reactor and an upward filtration biofilm separation tank is shown.

This is intended to represent the embodiment that can be modified to achieve a more complete water treatment system when applying the technical idea of the present application, in the case of applying a configuration in which an electrolytic device is added to the ozone treatment reactor (10) It is intended to show that the ozone treatment reactor 10 of FIG. 1 may be provided in a configuration having an upward filtration biofilm separation tank 100 in the ozone treatment reactor 10 to which the electrolytic apparatus of FIG. 3a is added. In the case of applying a configuration in which an electrolytic device may be added to the upward filtration biofilm separation tank 100 in the field, the upward filtration biofilm separation in which the electrolysis device of FIG. 3B is added to the ozone treatment reactor 10 of FIG. It shows an example of the application that can be carried out by applying the tank 100.

In addition, as shown in FIG. 3c, when the basic configuration of the ozone treatment reactor and the upward filtration biofilm separation tank of the present application require the perfect removal of nitrate nitrogen, the separation of the upward filtration biofilm without placing the membrane separation layer on the upper portion of the upward filtration biofilm separation tank. The filtrate obtained through the tank is contained in the filtered water storage tank 110, and the reverse osmosis filtration device (Reverse Osmosis Ststem) shows that it can be applied to the modified system to obtain purified water.

The electrolytic apparatus 200 installed in the ozone treatment reactor 10 or the upward filtration biofilm separation tank 100 of the present application can use at least about 50,000 hours using a platinum plated iridium coated or plated on a titanium plate. to be provided to or hadeunga using an aluminum electrode plate and a mixture of Al (aluminum) bar delivered electrode may be used, the selection of a voltage to the electrodes used in the electrolytic cell, to test the correlation between such electrode area as PO ₄ -P in the electrolytic cell 5 A sample aqueous solution was prepared to make 50 mg / l of mg / l and cl −, and experiments were conducted based on this. An aluminum plate (5 × 10 cm) was used as an anode and a cathode, and the distance between the electrodes was 4 cm. In this case, the changes in phosphorus concentration when 5V, 10V, and 20V were applied, respectively, were tested. At 10V and 5V, the residual phosphorus concentration after reaction for 40 minutes was 0.2mg / l and 1.9mg / l, respectively. When 95.6% and 61.2% were shown and a voltage of 20V was added, it was confirmed that phosphorus (5 mg / L) in the aqueous solution was completely removed in 30 minutes of reaction.

This is because when the aluminum plate is used as the anode and cathode electrodes, the higher the voltage, the higher the phosphorus removal rate. This is because a large amount of aluminum ions were eluted from the aluminum electrode due to the high voltage, and the voltage was 5V, 10V, 20V. It was confirmed that the measured current values at the time indicated 10 mA, 20 mA and 60 mA, respectively.

In addition, we tried to test the phosphorus removal rate according to the distance between the electrodes. When the electrode spacing is 2cm, 4cm, and 7cm, the remaining concentrations of phosphorus at the reaction time of 40 minutes were 0.1, 0.37, 0.76mg / l, respectively, and the phosphorus removal rate was 97.9, 92.2 and 83.8%, the narrower the electrode spacing, the higher the phosphorus removal rate was. The smaller the spacing between the electrodes, the less the inter-electrode behavior and the more efficient the current flow. Also, the narrower the gap between the electrodes, the higher the current value. Statistically, it is appropriate to keep the gap between 2-3 cm.

In addition, using the above facilities, the residual phosphorus concentration was 0.95 mg / l when the aluminum electrode area was 100 cm 2, the residual phosphorus concentration was 0.25 mg / l when the electrode area was 500 cm 2, and the phosphorus in water was only 30 minutes at 1500 cm 2. It was confirmed that the removal completely, the larger the electrode area was confirmed that the phosphorus removal rate can be increased.

Example 1

The final sedimentation treatment water of the sewage treatment plant at 198 Unsim 2-ri, Gangneung-gun, Yangpyeong-gun, Gyeonggi-do, Korea. The biofilm separation tank 100 of the present application has a diameter (Ø) of 3,000 mm and a height (H). 4,000㎜ size, and the lower biofilm filtration tank is formed with the thickness of the biofilm media layer 1,500mm in the ratio of activated carbon 2: geolite 1: anthracite 1: and the through-particle diameter in the upper membrane separation filter layer of 5 ~ 20㎛ range The filtration process was carried out by sending the filter medium to the biofilm separation tank at a thickness of 100 mm and the passing rate of 0.5 to 1.5 cm 3 / cm 2 so that the treated water had an ozone concentration in the range of 10 to 50 ppm. Before and after analyzing the effluent water obtained Table 1 below.

TABLE 1

 Inspection items Before treatment After treatment Water quality standard  Coliform Not detected Not detected Not detected / 100mg Ammonia nitrogen Not detected Not detected 0.5 mg / l or less Nitrate Nitrogen 5.5 1.4 10.0mg / l or less smell none none none flavor Odorless, tasteless Odorless, tasteless Odorless, tasteless Turbidity 0.8 0.5 1 or less

Example 2

In another method, the groundwater (drinking water) under Yurim Enmatech management, located in Songhyeon-ri, Yangpyeong-gun, Gyeonggi-do, Korea, was tested by the water treatment method of the present invention. The biofilm separation tank is used as it is, and the groundwater where contamination is expected is used. In order to carry out the pretreatment process in the ultrasonic electrolytic precipitator, the ultrasonic electrolytic precipitator was prepared with a diameter (Ø) of 2,500 mm and a height (H) of 3,000 mm. The discharged water before and after the treatment of contaminated water was analyzed in the same manner as in Example 1 to have an ozone concentration in the range of 50 ppm to obtain the results shown in Table 2 below.

TABLE 2

Inspection items Before treatment After treatment Water quality standard Coliform Not detected Not detected Not detected / 100mg Ammonia nitrogen 0.4 Not detected 0.5 mg / l or less Nitrate Nitrogen 6 Not detected 10.0mg / l or less smell none none none flavor none none none Turbidity 0.5 0.35 1 or less

1: Illustrative diagram of an ozone treatment reactor and an upward filtration biofilm separation tank which are basic components of the present application.

2 is an exemplary view illustrating a backwashing process of an upward filtration biofilm separation tank of the present application.

Figure 3a: Exemplary configuration of adding an electrolytic device to the ozone treatment reactor basic configuration of the present application.

Figure 3b: Exemplary configuration of the addition of the electrolytic device to the basic configuration of the upward filtration biofilm separation tank of the present application.

Figure 3c: Exemplary configuration of the reverse osmosis pressure filtration device is added to the basic configuration of the ozone treatment reaction tank and the upward filtration biofilm separation tank of the present application.

** Description of the symbols for the main parts of the drawings **

1: water to be treated 10: ozone treatment tank

11 bulkhead 12 outlet

13: pump chamber 14: pump

15: circulation line 16: supply line

20: ozone supply device 21: ozone injection pipe

22: ozone injection valve 23: ozone injection pipe

24: ozone concentration measuring sensor 30: inner tube

40: appearance 41: blade

42: outlet 50: filtration layer

51: media 52: screen net

60: sludge storage tank 61: sludge withdrawal piping

62: sludge withdrawal pump 70: residual water storage tank

71: strainer 72: residual water withdrawal valve

73: circulating pump 80: membrane separation media layer

81: air spray nozzle 82: overflow wall

83: outlet 100: biofilm separation tank

110: filtered water storage tank 120: reverse osmosis filtration device

130: purified water storage tank

Claims (5)

In the water treatment method for obtaining purified water suitable for drinking water or industrial water, A water treatment system for obtaining purified water suitable for drinking water or industrial water is provided in a configuration including an upward filtration biofilm separation tank and an ozone supply means, and pre-treatment of ozone-containing water by injecting ozone from the ozone treatment reaction tank Ozone-containing water is obtained by performing the process, and ozone-supply means for sending the ozone-containing water to an upward filtration biofilm separator, and the ozone-containing water introduced into the upward filtration biofilm separator is filled in the media. Providing decomposed generator oxygen (O) and oxygen (O ₂ ) to promote the filter bed, remove impurities in the water to be treated passing through the activated carbon filter bed, and then pass through the filtration layer or reverse osmosis device (RO system) Water is provided so as to be discharged. The method of claim 1, And an electrolytic device in addition to the upward filtration biofilm separator and the ozone supply means to provide a heavy metal removal effect. The method of claim 1, The filtration layer used in the upward filtration biofilm separation tank is selected from TUBE type filter, BAG filter, microfiltration (MF) membrane, ultrafiltration (UF) membrane, nanofiltration (NF) membrane, hollow fiber membrane Water treatment method. In the water treatment apparatus for obtaining purified water suitable for drinking water or industrial water, The water treatment apparatus is provided in a configuration including an ozone supply means and an upward filtration biofilm separation tank, wherein the ozone supply means supplies / dilutes ozone-containing water at a predetermined concentration by supplying / diluting ozone to the water to be treated. Ozone having ozone injection pipe (21), ozone injection volume control valve (22) and ozone injection pipe (sub aerator: 23) for supply to (100) and supplying the water to be treated (1) to an upward filtration biofilm separation tank. Have a means of supply, The upward filtration biofilm separation tank has an inner tube and an outer double tube structure at its center, and the treated water is introduced through the exterior, and the inner pipe is provided with a built-in air spray pipe for backwashing. An upflow filtration process is performed in which the water to be treated is discharged through the filter layer at the bottom of the upward filtration biofilm separation tank and through the membrane separation filtration layer at the upper part. Providing a filtration and backwashing function, including a means for blowing high pressure air upwards to pull the lower medial layer up and to disperse it again The ozone-containing water is supplied to the filter bed of the upward filtration biofilm separation tank to supply generator oxygen (· O) and oxygen (O ₂ ), which are decomposition products of ozone, to promote the filter bed and to pass through the filter bed. After removing impurities in the water, the water treatment device characterized in that the discharge is provided to pass through the membrane separation filtration layer or Reverse Osmosis System (Reverse Osmosis System). The method of claim 4, wherein An electrolytic device is added to the ozone supply means to provide a heavy metal removal effect.

Images