KR101102443B1 - complexed water treatment method and the apparatus preparing for water-lack situation - Google Patents

Abstract

The present invention relates to a water treatment method for obtaining purified water suitable for drinking water or industrial water for the treatment target water selected from river, river water, ground water, effluent treated in the wastewater treatment plant.

In preparation for recent climate change and future water shortages, our company contains some ammonia nitrogen, nitrate nitrogen, phenol, pesticides, etc. After pretreatment of water of inadequate rivers, rivers, groundwater, wastewater, etc. in the sulfate denitrification reactor or ultrasonic electrolysis reactor provided herein, ozone-containing water is made and supplied to the high precision filtration tank including the membrane separation filtration layer. The present invention relates to a water treatment method and a water treatment system for supplying purified water for drinking or industrial water by removing the remaining contaminant while passing through the biofilm media layer and finally discharged through the membrane separation filtration layer.

Sulfide Denitrification Reactor, Ultrasonic Electrolysis Reactor, Ozone-Containing Water, Membrane Separation Filtration Layer, High Precision Filtration Tank

Description

Complex water treatment method and the apparatus preparing for water-lack situation

The present invention relates to a water treatment method for obtaining purified water suitable for drinking or industrial water, and more particularly, to a water treatment method for removing ammonia nitrogen, nitrate nitrogen, heavy metals, or a dye source, and a water treatment apparatus used therein.

In recent years, water shortages are accelerating due to climate change, and as the drought persists in Korea, we are receiving limited water supply in Gangwon, Jeolla, and Chungcheong areas, and are suffering from drinking water supply by using fire trucks or water lines. In preparation for the prolonged drought, the government is proposing 10 water conservation tasks.

Korea's per capita precipitation is a water shortage country recognized by international organizations, which is only one-half of the world average. Nevertheless, the demand for water continues to increase due to our economic growth and improved living standards, and despite the government's steady increase in water supply facilities for the past 30 years, residents are receiving limited water supply this year. Is attempting to develop groundwater because it is likely to further intensify in the future, but the groundwater is also contaminated, and nitrate nitrogen is detected above the standard, and in the coal mine area, environmental impact assessment reports that valleys, tunnels, and groundwater are contaminated with heavy metals. Demands urgent action from us.

The present application applies a water treatment method using a high precision filtration tank including an ozone supply means as a basic system, and obtains sterile purified water suitable for drinking or industrial water using water containing relatively ammonia nitrogen or nitrate nitrogen. As a means, after the denitrification and dephosphorization reaction tank containing sulfur carrier is sent to the basic system of this company, or the treated water with relatively high heavy metal contamination, the pretreatment process is performed using ultrasonic electrolytic precipitation tank to remove heavy metals and various harmful bacteria. It is an invention having a technical idea to provide to be used as drinking water or industrial water through the water treatment method sent to the basic system of the present application.

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 treatment or pre-ozonation treatment is currently performed, but in the former case, THMs, which are carcinogens, and in the latter case, ammonia nitrogen (NH ₄ -N) is not being eliminated.

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, but if the water shortage became serious, there could be a situation where drinking water from the third and fourth grade water should be purified and consumed. We are in charge of the times when we must prepare for the worst situations that require water to be used as a source of drinking water.

In recent years, the use of water supply in villages has been largely unused as a source of drinking water due to a large excess of nitrate nitrogen, which is an analysis of the impact of wastewater from livestock farms. As a result, high pollution of heavy metals and high concentrations of fluoride or pesticides have been found in farms in the field, and the company started by recognizing the need to provide a water treatment system with a corresponding structure according to the characteristics of each region. Invention.

Water quality, which is slightly exceeded in nitrate nitrogen than drinking water quality standards experienced in most unit waterworks, is sufficiently drinkable even with the basic system of water treatment method using high-precision filtration tank, including the ozone supply means. As a result, livestock farms can be applied by sending denitrification and dephosphorization reactors with sulfur carriers to the main system in areas where ammonia nitrogen or nitrate nitrogen content is high in the vicinity. In addition, water to be treated with relatively heavy metals, such as mines and mining areas, is treated with pre-treatment using an ultrasonic electrolytic precipitator to remove heavy metals and various harmful bacteria, and then sent to the basic system of the drinking water source or industrial water. Will be available.

This is a basic means to solve the excess phenomenon of nitrate nitrogen, which is a problem in most water supply facilities of villages, and supplies ozone-containing water to the high-precision filter tank, which remains as the ammonia nitrogen or After removing acidic nitrogen, it is basically composed of technical idea of supplying it to drinking water or industrial water through membrane separation filtration layer, and in case of relatively high nitrate nitrogen content, the pretreatment process was performed by adding desulfurization denitrification tank. After sending to the basic configuration of the present application, or in the area where relatively heavy metals or pesticides need to be removed, the ultrasonic electroprecipitation tank is added to carry out the pretreatment process and then sent to the basic configuration of the present application, or to the desulfurization denitrification tank and ultrasonic After the pretreatment stage of the electroprecipitation tank, send it to the basic configuration Has a constant (淨水) method or the water treatment system and the object to provide the device.

The present application as a means for solving the above problems, as a water treatment method for obtaining purified water suitable for drinking water or industrial water for the target water selected from the treated water selected from river, river water, ground water, wastewater treatment plant After pretreatment of the water to be treated in a sulphate denitrification tank or an ultrasonic electrolysis tank, an ozone-containing water is made and supplied to a high-precision filtration tank to remove residual contaminants while passing through the filter bed of the biofilm separation tank. However, a water treatment method supplied to industrial water is applied, and the sulfidation denitrification tank uses a yellow carrier, and the high precision filtration tank has an inner tube and an external double tube structure at its center, and the treated water flowing through the supply line is biofilm. Through the filtration layer to form a filtration system in an upstream flow, In case of over-function, the water supply pump to be treated is stopped and the inlet valve is shut off. Then, the discharge valve is opened to adjust the water level in the high precision filtration tank to the upper end of the inner pipe. When it is pumped through the air spray pipe provided in the center, the water in the center of the inner pipe is pushed upwards, and the filter medium in the lower part is pulled up and ejected to the upper end of the inner pipe to be disperse | distributed to the media spray plate which has an inclination angle, and falls to the bottom. In the upper part of the high precision filtration tank, a tube 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 It is provided to have the membrane separation filtration system selected.

Therefore, the present invention is a water treatment system for obtaining purified water suitable for drinking water or industrial water for the treated water selected from river, river water, ground water, and effluent treated in wastewater treatment plant. After the pretreatment in the tank or ultrasonic electrolysis reactor, the ozone-containing water is made and supplied to the high-precision filtration tank to remove the remaining contaminants through the biofilm filter layer, and then to the drinking or industrial water through the membrane separation filtration layer. Through this can be achieved.

In the present application, to improve the denitrification efficiency of the water to be treated, the sulfidation denitrification tank is named YP SOD system named after the applicant company. YP SOD is an abbreviation of Yurim perfect sulher oxidation denitriflcation, and denitrification using YP SOD system. In the process, chemical and biological reactions are carried out together. The sulfur carrier is aerobic and / or anoxic conditions that perform aeration using a carrier sintered by mixing a predetermined ratio of sulfur, limestone, zeolite, magnesium, and activated carbon. It can be applied in the case that there is a lot of ammonia nitrogen in the water to be treated or if the water to be treated needs to be discolored depending on the situation. Decolorization is carried out by the sulfation reaction while converting to acidic nitrogen and nitrite nitrogen. Alternatively, if there is a large amount of nitrous nitrogen, it is maintained in anoxic conditions without an aeration under anoxic conditions, and denitrification of nitrous nitrogen or nitrite nitrogen with nitrogen gas is carried out by a sulfation reaction to remove nitrogen components and color. Purify the target water.

In addition, in the present application, the treated water having a relatively high content of heavy metals or phosphorus is added to an ultrasonic electrolyzer in the above basic composition to perform a pretreatment process to remove heavy metals or other harmful bacteria before being sent to the high precision filtration tank of the present invention. The present invention was completed by confirming that the purified water can be used as the number.

Detailed application examples, to which the technical spirit of the present application is specifically applied, will be described in detail with reference to the accompanying drawings in the following detailed description.

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. Effluent water from rivers, groundwater or wastewater treatment plants is treated with a water treatment system comprising an ozone supply device, an electrolytic device, and a high-precision filter tank including a membrane separation filtration layer. It has the effect of providing purified water to the extent that it can be used as a 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 shows an exemplary application of the purified water treatment method to which the technical idea of the present application is applied. The flow rate adjusting tank 10, the sulfated denitrification reaction tank 20, the ozone reaction tank 30, and the high precision filtration tank are shown. An embodiment of the purified water treatment method provided by including (50) as a main configuration is shown.

The flow regulating tank 10 functions to effectively denitrify and dephosphorize by sending a fixed quantity to the desulfurization denitrification reaction tank 20. The flow regulating tank 10 selects effluent from rivers, rivers, groundwater, sewage and wastewater treatment plants. The water to be treated is sent to the sulphation denitrification tank 20 through a feed pump 1 (11), and the sulphation denitrification tank 20 receives the water to be treated at the bottom inlet 25 and receives the upper outlet 1. (26) is operated as an upflow system for discharging to the next stage, the bottom of the sulphation denitrification reactor 20 is laid with a stall or STS network gravel 21 or ceramic body of a size of about 50 ~ 150 mm 20 to 100 ㎜ thick and can be applied to the configuration to fill the yellow carrier 22 on the top, the yellow carrier is sulfur, zeolite, calcined lime (Ca (OH) ₂ ) 6 ± 2: 2 ± 1 : 1 ± 0.5: Sulfur sintered in the range of 150 ~ 300 ℃ with the ratio of 1 ± 0.5 The carrier may be used. The lower part of the sulfate denitration reaction tank 20 has an aeration acid pipe 23 connected to an air supply line, and an air injection pipe 24 connected to an air supply line. It will supply the denitrification and dephosphorization effect.

The effluent treated in the sulphate denitrification reaction tank 20 is sent to the ozone reaction tank 30 to contain ozone and to be sent to the high precision filtration tank 50. The ozone reaction tank 30 receives ozone from the ozone supply device. Bar to be supplied, the ozone supply device 31 may be provided divided into oxygen generator 31a, ozone generator 31b, ozone dissolver (31c), ozone injection connected to the ozone dissolver (31c) Pipe 33 has an ozone injection valve 32 and the ozone injection pipe 33 is connected to the lower portion of the ozone reactor 30 and the end of the ozone injection pipe 33 through an ozone injection pipe (sub aerator 34) The ozone supply amount is controlled so that ozone is injected into the water and the treated object introduced has an ozone concentration in the range of 10 to 50 ppm, and the ozone reaction tank 30 has a partition wall 35 at the center and the ozone concentration at the stage before the partition wall. The measuring object is connected to the ozone injection valve 32, and the number of treated objects introduced is constant. The ozone supply amount is adjusted so that the above concentration, for example, the treated water has an ozone concentration in the range of 10 to 50 ppm, and the treated water whose ozone concentration is adjusted is discharged to the pump chamber through the outlet 2 (36) above the partition 35. The pump chamber is provided with two feed pumps 2 (37) to be sent to the high precision filtration tank of a predetermined amount of water, to be provided in a configuration having a circulation line and a supply line for circulating the excess amount It can be shown.

The high precision filtration tank 50 of the present application is provided with the inner tube 51 and the outer tube 52 as a center, and are installed as a bell with the biofilm filter layer at the center, and the treated water introduced from the ozone reactor 30 is external. A system that floats through the outlet portion 53 through the lower portion 52 and rises upward through the filter medium layer 54, and is discharged to the outlet 59 through the membrane filtration layer 55 and the overflow wall 2 56. The inner side of the exterior 52 has a spiral or screw-shaped blade 52a and guides the treated water to the lower outlet 53 so as to flow to the media layer 54, and the media layer 54 ) Can be used as built-in filter medium selected from activated carbon, sand, geolite, anthracite, ceramic, ion exchange resin, and in addition to filtering contaminants in the water to be treated (1), Ozone generated from the biofilm media layer (54) Ammonia nitrogen remaining in the water to be treated while oxygen and generator oxygen are separated into small [O _3- > O ₂ + O], supplying oxygen to the filter media such as activated carbon, anthracite, or zeolite After the nitrate nitrogen is removed, it may be applied to the system discharged to the outlet port 59 through the membrane wall 2 (56) through the membrane filtration layer 55.

The filter layer 54 of the high precision filtration tank 50 of the present application has a screen net 54a provided with activated carbon, anthracite or geolite, and provided with a stainless material covering the filter layer, and during filtration or backwashing. The sludge attached to the filter medium is separated and the sludge is separated to collect into the sludge reservoir tank 57 at the bottom of the filtration device, and the sludge is sent to a separate treatment place through the sludge discharge pipe and the withdrawal pump or a separate microorganism. Will be sent to where it is needed.

In addition, the residual water in the state of including the sludge and the scum layer in the state of the residue, which does not pass through the filter medium layer 54, from the treated water introduced from the ozone reaction tank 30, is generated. A residue storage tank 58 is provided between the sludge storage tanks 57, and the residue collected in the residue storage tank 58 is circulated back to the flow regulating tank 10 through the withdrawal valve 58a and the circulation pump 58b. It has been shown that it can be applied to the configuration to circulate the clear water through the desulfurization denitrification tank (20).

Figure 2 shows another example of the application of the purified water treatment method to which the technical idea of the present application, flow rate adjustment tank 10, ultrasonic electrolytic bath 40, ozone reaction tank 30 and high precision filtration tank ( An embodiment of the purified water treatment method is provided, including 50) as a main configuration.

Since the flow rate adjusting tank 10, the ozone reaction tank 30, and the high precision filtration tank 50 may be equally applicable to the description of FIG. 1, the description thereof will be omitted, and the ultrasonic electrolytic bath 40 will be described. The ultrasonic electrolytic bath 40 of the present application is provided in the form of a concave sedimentation part 41 in the form of a precipitation tank forming an inclined surface at the bottom, for example, an electrolytic device 42 and an ultrasonic generator 43 embedded in a state of being deposited in water. ) Can be installed in three separate configurations at 120 ° intervals.

The electrolytic device 42 of the ultrasonic electrolytic bath 40 of the present application uses a plated or plated platinum group iridium on a titanium plate and is used in combination with an aluminum electrode plate to provide at least about 50,000 hours of life. (Aluminum) It is preferable to be provided so that the electrode can be used separately, when the inflow of the water to be treated into the ultrasonic electrolytic bath 40, the electrolytic device 42 is activated and the reaction takes place at this time, micro bubbles and scum are generated to rise Various reaction phenomena such as sedimentation and sedimentation occur, and disinfection sterilization and simultaneous separation occur simultaneously, and heavy metal components are separated and precipitated.

The scum layer generated during the separation process is operated so that the scum layer attached to the apparatus or the wall of the reactor vessel is attached while the ultrasonic generator 43 provided at the lower part of the electrolytic device is operated for about one minute every 10 minutes. It is important that the reaction tank, the electrolyzer or the ultrasonic generator may further include a microacid pipe 44 in the water so that the suspended solids or scum layer does not adhere to each other by 120 ° between the electrolyzer 42 and the ultrasonic generator 43. It can be installed at about three intervals to inject air, and micro-acid pipes are sprayed by a blower or compressor to the electrolytic device 42, the ultrasonic generator 43, or the wall of the invading tank. It is desirable to prevent the scum layer from sticking.

The upper scum layer generated during the process is discharged to the outside by the scum removal scraper 45 which is slowly rotated by the reduction motor (M), the number of treated objects dephosphorized and denitrified during the electrolytic treatment is the overflow wall 46. The sludge layer and the heavy metal material collected in the concave sedimentation part 41 by sedimenting to the lower part in the electrolysis process of the ultrasonic electrolytic bath 40 are sedimentary sludge withdrawal pump 45 through It is sent to the tank storage tank 60 by the separate processing is already known in the art that no further explanation is required.

Thereafter, the ozone reaction tank 30 has an ozone concentration in the range of 10 to 50 ppm and flows into the high precision filtration tank 50, and oxygen and oxygen generated in the biofilm filter layer 54 of the high precision filtration tank 50. _3- > O ₂ + O], and oxygen and generator oxygen supply oxygen to the filter media such as activated carbon, anthracite, and geolite to form a biological filter layer, and retain the ammonia nitrogen or nitric acid residue in the treated water. After nitrogen is removed, the membrane separation filter layer 55 is discharged after passing through the membrane separation filtration layer 55 provided at the upper part of the high precision filtration tank 50. The membrane separation filter layer 55 is a tube filter, a BAG filter, a flat membrane type, and a filter membrane filter. Or other well-known microfiltration (MF) membrane, ultrafiltration (UF) membrane, nanofiltration (NF) membrane, reverse osmosis (RO) membrane selected from the membrane separation filtration layer may be provided in the embodiment used. have.

Figure 3 shows another embodiment of the purified water treatment method to which the technical idea of the present application is applied, which is applied to both the embodiment of Figure 1 and Figure 2 flow rate adjusting tank 10 and the desulfurization denitrification tank An embodiment of the purified water treatment method including both the 20, the ultrasonic electrolysis tank 40, the ozone reaction tank 30, and the high precision filtration tank 50 is shown.

That is, the water to be treated in the flow rate adjusting tank 10 to the sulfate denitrification reaction tank 20 in a predetermined amount is sulfur carriers in which sulfur, zeolite and calcined lime (Ca (OH) ₂ ) activated carbon are provided in an appropriate ratio. It functions to get the denitrification and dephosphorization effect through the layer, and the treated object treated in the sulphate denitrification reaction tank 20 is sent to the ultrasonic electrolytic bath 40 so that the electrolytic device 42 is operated to simultaneously identify the disinfection sterilization reaction. Separation also occurs at the same time and the heavy metal components are also separated and the effluent is sent to the ozone reaction tank (30) and contains ozone to form a system to send to the high precision filtration tank (50).

Example Application Example 1.

Sulfide denitrification tank YP SOD system performed to improve the denitrification efficiency in the present application is laid on the bottom of the stole or STS network and 50 to 150 mm gravel or ceramic body 20 to 100 mm thick and sulfur on top Sulfur carrier manufacturing process in order to achieve the YP SOD system provided in a carrier-filled structure of sulfur (S): zeolite (MgO): slaked lime (Ca (OH) ₂ ): activated carbon = 6: 2: 1: 1 ratio The mixture was heated to 250 ° C and sintered to use.

In the above carrier composition, the mixing of calcined lime (Ca (OH) ₂ ) prevents acidification by neutralization of sulfur oxides and neutralizes it.Sulfate ions react with heavy metals in water to form water-insoluble salts to precipitate. Mg ⁺² reacts with NH4 ^-1 ions to form a precipitate in addition to nitrate nitrogen as shown in the following reaction formula: Mg ⁺² + NH4 ^-1 + PO ₄ ^-3 = MgNH4PO ₄ It is assumed to form a precipitate.

When the HRT (hydraulic retention time) was applied for about 6 hours using the yellow carrier provided as the composition, it was confirmed that the results of Table 1 below were high in T-N removal rate or nitrate nitrogen removal efficiency.

[Table 1]

 Item  Influent ㎎ / ℓ  Treated water mg / l PH  7.3  7.2 T-N  17.0  0.5 NO3-N  16.5  No detection T-P  3.4  1.15

Example Application Example 2.

When applied to the sewage of the village using the yellow carrier provided in the above composition

TABLE 2

 Item  Influent ㎎ / ℓ  Treated water mg / l PH  7.4  7.1 T-N  11.29  4.5 NO3-N  9.5  No detection T-P  2.1  0.85

As can be seen through Examples 1 and 2, when applying the sulphate denitrification tank (YP SOD system) of the present application, it can be confirmed that nitrogen and phosphorus are simultaneously removed.

Example Application Example 3.

Applicant's water treatment facility is located at 198, Unmi 2-gun, Gangpyeong-gun, Gyeonggi-do. The final sedimentation treatment water at the sewage treatment plant is applied to the YP SOD system. Mm and a height (H) of 3,000 mm size, using the yellow carrier obtained in Example 1, the diameter (Ø) 3,000 mm, height (H) of 4,000 mm size provided in the high precision filtration tank 50 is activated carbon 2 : Geolite 1: The thickness of the biofilm media layer is 1,000 mm in the ratio of anthracite 1, and the tube filter media having a particle diameter of 5-20 μm in the upper membrane separation filter layer is 100 mm thick. The filtration process was carried out by passing the rate of 0.5 ~ 1.5 cm3 / cm2 to the ozone concentration in the range of 10 to 50 ppm, and the filtration process was performed. The treated water was analyzed by analyzing the discharged water before and after passing through the biofilm filtration tank. standard In comparison with Table 3 below.

[Table 3]

 Inspection items Before processing 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 Application Example 4.

Another method is to apply the groundwater (drinking water) under Yurim Enmatech, located in Songhyeon-ri, Yangpyeong-gun, Gyeonggi-do, Korea to apply the water treatment system of FIG. Ultrasonic Electrolyzer was prepared and used, and other conditions were applied in the same manner as in Example 3 to analyze the discharged water before and after treatment of the contaminated water, thereby obtaining the results shown in Table 4 below.

[Table 4]

Inspection items Before processing 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 is a diagram illustrating a first water treatment system to which the technical idea of the present application is applied.

2 is an exemplary view of a second water treatment system to which the technical spirit of the present application is applied.

3 is an exemplary view of a third water treatment system to which the technical spirit of the present application is applied.

** Description of the major symbols in the drawings **

10: flow rate adjusting tank 11: feed pump 1

20: desulfurization denitrification tank 21: gravel (ceramic body)

22: yellow wall 23: aeration agency

24: air injection pipe 25: inlet

26: outlet 1 30: ozone reactor

31: ozone supply device 32: ozone injection valve

33: ozone injection pipe 34: ozone injection pipe

35 bulkhead 36 outlet 2

37: Gold pump 2 40: Ultrasonic Electrolyzer

41: recessed part 42: electrolytic device

43: ultrasonic generator 44: micro-acid pipe

45: scraper removal scraper 46: overflow wall 1

47: sedimentation sludge extraction pump 50: high precision filtration tank

51: inner tube 52: appearance

53: outlet 54: filter layer

55: membrane filtration layer 56: overflow wall 2

57: sludge storage tank 58: residue storage tank

59: outlet 60: sludge tank

Claims (5)

In the water treatment method for obtaining purified water suitable for drinking water or industrial water for the target water selected from effluent treated in river, river water, ground water, wastewater treatment plant,  The treated water is sent to the desulfurization denitrification tank using a sulfur carrier to undergo denitrification and dephosphorization effect, and the effluent treated in the desulphurization denitrification tank is sent to the ozone reactor for ozone concentration in the range of 10 to 50 ppm. Ozone-containing water is maintained to be supplied to the high precision filtration tank, and ozone injected into the water to be treated is separated into oxygen and oxygen in the biofilm media layer to supply oxygen to the media layer to form a biological media layer. And removing ammonia nitrogen or nitrate nitrogen remaining in the water, and supplying it to the drinking water or industrial water through the membrane separation filtration layer. The method of claim 1, The sulfur carrier used in the sulfidation denitrification tank is sulfur, zeolite, calcined lime (Ca (OH) 2) activated carbon in a ratio of 6 ± 2: 2 ± 1: 1 ± 0.5: 1 ± 0.5, and it is 150 ~ 300 ℃. Heating to the range. After the sintered water treatment method characterized in that used as a yellow carrier. The method of claim 1, The high-precision filtration tank has an inner tube 30 and an outer tube 40 having a double tube structure at the center thereof, and the treated water 1 flowing through the supply line 16 exits through the outlet of the biofilm separation tank 100 and is filtered. When the filtration system is formed in the upstream through the bed 50 and the contaminants in the filtration layer 50 increase in contaminants and the filtration function is lost, the feed water 14 to be treated 1 is stopped. After the inlet water valve 16 is shut off, the outlet valve 62 is opened to adjust the level of the water level in the biofilm separation tank 100 to the upper end 31 or lower of the inner pipe 30, and then operate the compressor to supply the high pressure air to the inner pipe ( 30) When the pressure is injected through the air spray pipe 32 provided in the center, the water in the center of the inner tube 30 is pushed upwards, and the media 51 of the filtration layer 50 in the lower portion is pulled up to raise the inner tube 30. It blows to the upper end 31 and is caught and distributed to the media jet plate 33 having an inclination angle It has a backwash system that falls to the top of the biofilm separation tank, and at the top of the biofilm separation tank, a tube 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 Water treatment method, characterized in that provided to have a membrane separation filtration system selected from among. In the water treatment system to obtain the purified water suitable for drinking water or industrial water for the target water selected from the effluent treated in the river, river water, ground water, wastewater treatment plant,  The water to be treated is applied to a system for obtaining purified water through a sulphate denitrification tank, an ozone reactor, a high precision filtration tank, and a membrane separation filtration layer. Sulfuric acid denitrification reactor contains sulfur, zeolite, calcined lime (Ca (OH) 2) and activated carbon in the ratio of 6 ± 2: 2 ± 1: 1 ± 0.5: 1 ± 0.5 and heated to 150 ~ 300 ℃. Sulfation denitrification tank using sintered yellow carrier, An ozone reactor that supplies ozone to maintain an ozone concentration in the range of 10 to 50 ppm Ozone-containing water is made in the ozone reaction tank and supplied to the high-precision filtration tank. The ozone injected into the water to be treated is separated into oxygen and generator oxygen in the biofilm media layer to supply oxygen to the media layer to form a bio mediator layer. High precision filtration tank to remove residual ammonia nitrogen or nitrate nitrogen A membrane separation filtration layer for filtering purified water treated through the high precision filtration tank to obtain purified water; Water treatment system, characterized in that consisting of. In the water treatment apparatus for obtaining purified water suitable for drinking water or industrial water for the target water selected from the discharged water treated in river, river water, ground water, wastewater treatment plant, The desulfurization denitrification tank is composed of rostol or STS net at the bottom, and gravel or ceramic body of 50 ~ 150 mm size and 20 ~ 100 mm thick, and yellow carrier is filled at the top. And geolite, calcined lime (Ca (OH) ₂ ) activated carbon is provided in the ratio of 6 ± 2: 2 ± 1: 1 ± 0.5: 1 ± 0.5 and provided as a yellow carrier sintered in the range of 150 ~ 300 ℃ Water treatment equipment.

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