KR102345686B1 - Purification system and method reinforced treament antibiotics - Google Patents

Abstract

The present invention relates to a water purification system in which antibiotic treatment in wastewater is enhanced, and in a system for treating wastewater from which solids are separated, an aeration tank in which wastewater from which solids are removed is introduced and stored, and a blower that supplies air to the aeration pipe in the aeration tank an aeration device comprising; a biomass filtration device installed to introduce wastewater discharged from the aeration device; a primary flocculation reactor and a secondary flocculation reactor installed to sequentially introduce wastewater discharged from the biomass filtration device; a coagulant tank installed to administer a coagulant to the primary and secondary flocculation tanks; a sand filtration device installed to introduce wastewater discharged from the secondary coagulation tank; Ozone having an ozone reactor flowing in from the sand filter device, a biological activated carbon filter in which mixed water of wastewater and ozone is introduced from the ozone reactor, and a circulation line installed between the ozone reactor and the biological activated carbon filter to supply and recover the mixed water ,Bioactive carbon filtering device; Ozone, primary water purification device installed so that the mixed water discharged from the biological activated carbon filter of the biological activated carbon filter is introduced; By comprising: a secondary water purification device installed so that the mixed water discharged from the primary water purification device is introduced; and an activated carbon powder tank installed to supply activated carbon powder to the mixed water flowing into the secondary water purification device; while improving the antibiotic treatment efficacy to a certain level or more.

Description

Purification system and method reinforced treament antibiotics in wastewater

The present invention relates to a system and method for treating wastewater, and more particularly, to a water purification system and method in which antibiotic treatment in wastewater is enhanced so that antibiotics in wastewater are removed and reduced while passing through a plurality of filtering devices and reaction devices. will be.

In general, antibiotics are compounds produced by microorganisms or artificially synthesized.

These antibiotics are largely divided into antibiotics used for human use and antibiotics used for livestock. 70 to 90% of this antibiotic is excreted outside the body after administration to the human body or livestock due to the characteristics of the drug. In the case of antibiotics for livestock, as a result of measuring antibiotics by collecting compost commercially available in Korea, tetracyclines were detected in about 30% of compost and 100% of compost, and sulfonamides were found in compost. About 20% was detected in the liquid manure and 82% in the liquid manure. Among these antibiotics, the most frequently detected components are tetracycline, chlor tetracycline, oxi tetracycline, florfenicol, sulfa methoxazole, and sulfathiazole. ), tiamulin, and tylosin.

These antibiotics are included in wastewater, wastewater sludge, human excrement, livestock manure or food waste and are exposed to natural ecosystems. In particular, antibiotic resistance genes induced by the exposed antibiotics are transferred to various microorganisms, resulting in a fatal threat to humans. Therefore, the misuse or residue of antibiotics is emerging as a social problem.

Republic of Korea Patent Registration No. 10-0446041 (2004.0.08.30. Announcement) Republic of Korea Patent Registration No. 10-0795072 (2008.01.17. Announcement) Republic of Korea Patent Registration No. 10-1105349 (Announcement on Jan. 16, 2012) Republic of Korea Patent Registration No. 10-1269251 (published on July 4, 2013)

An object of the present invention devised to solve the above problems is to provide a water purification system and method in which antibiotic treatment in wastewater is enhanced so that the antibiotics of various components contained in the wastewater are removed and reduced while the wastewater passes through a plurality of filtering devices. is in

In order to achieve the above object, the water purification system with enhanced antibiotic treatment in wastewater according to the present invention is a system for treating wastewater from which solids are separated, an ozone reactor into which wastewater is introduced, and a mixture of wastewater and ozone from the ozone reactor. It may include; an ozone and biological activated carbon filtering device disposed between the incoming biological activated carbon filter and the ozone reactor and the biological activated carbon filter and having a circulation line installed to supply and recover the mixed water.

Here, the circulation line is a flow pipe installed to supply mixed water from the ozone reactor to the biological activated carbon filter, a first recovery pipe installed to recover the mixed water from the biological activated carbon filter to the ozone reactor, and a second recovery pipe installed by connecting the flow pipe and the first recovery pipe , an ozone supply pipe installed to supply ozone from the flow pipe before the second return pipe, an ozone inlet pipe installed to supply external ozone to the ozone supply pipe, and a flow pipe between the ozone supply pipe and the second return pipe to mix wastewater and ozone It may be provided with a discharge pipe installed to discharge the mixed water purified from the installed mixer, the bioactive carbon filter.

In addition, the circulation line includes a circulation pump installed in the flow pipe, a pressurized pump installed in the ozone supply pipe, a 1-1 valve installed after the second return pipe in the flow pipe, a 1-2 valve installed in the second return pipe, and a first return pipe. The installed 2-2 valve and check valve, the 2-2 valve installed on the discharge pipe, and the valve installed on the ozone inlet pipe and the ozone supply pipe may be optionally further provided.

In addition, the circulation line connects before the mixer and after the 1-1 valve in the flow pipe, so that the wastewater avoids mixing with ozone and flows to the bioactive carbon filter, the bypass pipe, the ozone reactor, and the excess gas in the bioactive carbon filter flows. It may optionally further include a gas pipe installed so as to be connected to the gas pipe and a surplus ozone gas removal paper installed to remove the surplus ozone gas.

And the circulation line is an ozone supply pipe connected at both ends to the flow pipe, and in order to supply ozone using a vacuum, an injector installed in a portion where the ozone supply pipe and the ozone inlet pipe are connected, and at least one of a water trap installed in the ozone inlet pipe. have.

Meanwhile, the water purification system according to the present invention includes: an aeration device including an aeration tank into which wastewater from which solids have been removed is introduced and stored, and a blower for supplying air to an aeration pipe in the aeration tank; a biomass filtration device installed to introduce wastewater discharged from the aeration device; a primary flocculation tank and a secondary flocculation reactor installed to sequentially introduce wastewater discharged from the biomass filtration device; a coagulant tank installed to administer a coagulant to the primary and secondary flocculation tanks; a sand filtration device installed so that the wastewater discharged from the secondary coagulation reactor flows in and discharges to the ozone reactor of the ozone and biological activated carbon filtration device; a primary water purification device installed so that the mixed water discharged from the bioactive carbon filter of the ozone and biological activated carbon filtering device flows in; a secondary water purification device installed so that the mixed water discharged from the primary water purification device flows in; an activated carbon powder tank installed to supply activated carbon powder to the mixed water flowing into the secondary water purification device; It may further include at least one of.

Here, backwashing and washing lines for internal washing may be installed in at least one of the first filtration tank of the biomass filtration device, the second filtration tank of the sand filtration device, and the second water purification tank of the biological activated carbon filter and the secondary water purification device. .

At this time, the backwashing and washing lines are distributed from the inlet pipe before the inlet pipe installed to introduce wastewater or washing water into the filtration tank or water purification tank, the 3-3 valve installed in the inlet pipe, and the 3-3 valve, so that the A distribution pipe installed to supply wastewater to the upper part, a 3-1 valve installed to discharge wastewater from the distribution pipe, a 3-2 valve installed after the 3-1 valve, and a distribution pipe and after the 3-3 valve of the inlet pipe A collection pipe, filtration tank, or water purification tank installed after connecting the 3-2 valve of It may include a discharge pipe installed to discharge the purified wastewater, a 3-5 valve installed in the discharge pipe, and a washing pipe connected between the 3-3 valve and the recovery pipe in the inflow pipe to supply washing water.

On the other hand, in the method of purifying wastewater using a water purification system with enhanced antibiotic treatment in the above-mentioned wastewater, the wastewater is introduced into an ozone and bioactive carbon filtration device, mixed with ozone in an ozone reactor through a circulation line, and purified, A 50th step (S50) in which the mixed water is introduced into the biological activated carbon filter and purified again; may include.

Here, the wastewater is discharged from the ozone reactor by the circulation line, passes through the mixer, and the 1-1 valve (0 is closed and the 1-2 valve is opened, Then, it is discharged again, and while the discharge and recovery are repeated, the pressurized pump operates so that the external ozone passes through the ozone inlet pipe and injector in a vacuum state, and is supplied to the flow pipe through the ozone supply pipe, and the wastewater and ozone from the flow pipe pass through the mixer. and mixing, and discharge and recovery can be repeated until a preset measurement is reached.

Then, when the set measurement value is reached, valve 1-1 is opened, valve 1-2 is closed, mixed water flows into the bioactive carbon filter, valve 2-2 is closed, valve 2-1 is opened, and mixed water is It is recovered to the ozone reactor along the first return pipe, and discharge and recovery can be repeated until a preset measurement value is reached.

Meanwhile, the water purification method according to the present invention includes: a tenth step (S10) of introducing wastewater from which solids have been removed into an aeration tank of an aeration device, and supplying air to an aeration pipe in the aeration tank through a blower; a twentieth step (S20) in which wastewater discharged from the aeration device is introduced into the first filtration tank of the biomass filtration device and purified by passing through a rice straw filter, a sand filter and a strainer; a thirtieth step (S30) in which the wastewater discharged from the biomass filtration device is sequentially introduced into the primary flocculation reactor and the secondary flocculation reactor and is aggregated by a coagulant and a stirrer; a 40th step (S40) in which the wastewater discharged from the secondary flocculation reactor is introduced into the second filtration tank of the sand filtration device and purified through a sand filter, gravel, sand filter and strainer; The wastewater discharged from the sand filtering device passes through the ozone reaction tank and the bioactive carbon filter in the 50th step (S50), flows into the first water purification tank of the primary water purification device, and is oxidized by an AOP lamp (S60); and A 70th step (S70) of the mixed water discharged from the primary water purifying device being introduced into the second water purifying tank of the secondary water purifying device after the activated carbon powder is added and passing through the zeolite filter, gravel, sand filter and strainer; can

And the above-described filtration tank or water purification tank may be backwashed and washed.

During backwashing, valve 3-2 and valve 3-3 are opened, valve 3-1, valve 3-4, and valve 3-5 are closed, and washing water flows into the inlet pipe through the washing pipe After being discharged, it may be discharged upward in conjunction with the 3-3 valve, and may be introduced into the distribution pipe in conjunction with the 3-2 valve and then discharged through the water collecting pipe.

In addition, when washing after backwashing is complete, valve 3-1 and valve 3-4 are opened, valve 3-2, valve 3-3, and valve 3-5 are closed, and washing It may be supplied downward in connection with valve 1, and may be introduced into the recovery pipe in connection with valve 3-4, and then discharged through the distribution pipe and the water collecting pipe.

And when the purified water is operated after washing, valve 3-1 and valve 3-5 are opened, valve 3-2, valve 3-3, and valve 3-4 are closed, and interlocking with valve 3-1 The wastewater may be supplied downward, and the purified wastewater may be discharged through the discharge pipe.

According to the present invention as described above, there is an effect that can excellently reduce the antibiotics contained in wastewater, especially livestock manure.

In addition, there is an effect that can improve the antibiotic treatment efficacy to a certain level or more while repeatedly purifying wastewater by the circulation line of the ozone and biological activated carbon filtration device.

In addition, by washing the water purification tank and the reaction tank through backwashing and washing lines, there is an effect that the life span can be increased.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and serve to further understand the technical spirit of the present invention together with the detailed description of the present invention, so the present invention is limited only to the matters described in such drawings should not be construed as
1 is a block diagram illustrating a water purification system with enhanced antibiotic treatment in wastewater according to a preferred embodiment of the present invention.
FIG. 2 is an enlarged view showing the ozone and bioactive carbon filtering device shown in FIG. 1 .
3 is an enlarged view of the flow and backwash lines shown in FIG. 1 .
FIG. 4 is a process diagram illustrating a procedure for treating wastewater in the system of FIG. 1 .

Hereinafter, preferred embodiments will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily practice the present invention. However, when it is determined that a detailed description of a related well-known function or configuration may unnecessarily obscure the gist of the present invention in describing the operating principle of the preferred embodiment of the present invention in detail, the detailed description thereof will be omitted.

<system>

As shown in FIG. 1, the water purification system with enhanced antibiotic treatment in wastewater according to a preferred embodiment of the present invention is an aeration device 100, a biomass filtration device 200, a primary aggregation reaction device 300, 2 Primary flocculation reaction device 400, sand filter 500, ozone, bioactive carbon filter 600, primary water purification device 700, secondary water purification device 800 and backwashing, washing line 900 is made including Here, the wastewater may be sewage discarded in daily life or any sewage containing antibiotics, including livestock manure from which solids have been removed by a pretreatment device.

First, the aeration apparatus 100 may include an aeration tank 110 , a blower 120 , and a diffuser pipe 130 .

The aeration tank 110 may be installed so that activated sludge is added to wastewater from which solids are removed in the pretreatment device, and wastewater to which activated sludge is added flows in.

The blower 120 and the air diffuser 130 may be installed to supply a large amount of oxygen to the aeration tank 110 . In this case, the aeration pipe 130 may be disposed inside the aeration tank 110 , and the blower 120 may be located outside the aeration tank 110 to supply sufficient air to the aeration pipe 130 .

Accordingly, sufficient air is supplied to the wastewater in the aeration tank 110 so that organic matter decomposition by microorganisms can be actively performed.

Meanwhile, the biomass filtration device 200 may include a first filtration tank 210 , a rice straw filter F1 , a sand filter F2 , and a strainer F3 . Specifically, the first filtration tank 210 is installed so that the wastewater flows into the upper part and discharged to the lower part, and a rice straw filter (F1), a sand filter (F2) and a strainer (F3) are installed inside the first filtration tank 210 . may be sequentially arranged from top to bottom. Here, the straw filter F1 and the sand filter F2 may be stacked in a ratio of about 6-8:2-4. In addition, the biomass filtration device 200 may further include an air removal pipe connected to the upper portion of the first filtration tank 210 to discharge the gas therein.

Accordingly, antibiotics can be reduced while the wastewater passes through the rice straw filter F1, the sand filter F2, and the strainer F3 sequentially to the first filtration tank 210 . At this time, when the wastewater passes through the rice straw filter (F1), it is fermented at a high temperature and antibiotics can be rapidly reduced. In particular, oxytetracycline and chlortetracycline, which are types of tetracyclines, can be greatly reduced.

On the other hand, the primary flocculation reactor 300 and the secondary flocculation reactor 400 are provided with a primary flocculation reactor 310 and a secondary flocculation reactor 410, and a stirrer 320, and a coagulant tank ( 330) may be provided.

The primary flocculation tank 310 may be installed so that wastewater that has passed through the biomass filtration device 200 is introduced and discharged to the secondary flocculation reactor 410 .

The secondary flocculation tank 410 may be installed so that the wastewater introduced from the primary flocculation reactor 310 is discharged to the sand filter 500 .

The stirrer 320 may be disposed in the primary flocculation reactor 310 and the secondary flocculation reactor 410, respectively, and may be installed to agitate the wastewater in the flocculation reactor while the stirring blades operate.

The coagulant tank 330 may be installed to supply a coagulant to the primary flocculation tank 310 and the secondary flocculation reactor 410 . Here, the coagulant tank 330 may be installed in the primary flocculation tank 310 and the secondary flocculation reactor 410, respectively, and may supply different types of coagulant. In addition, the total amount of the coagulant supplied to the first coagulation tank 310 or the second coagulation tank 410 may be different, and the amount of coagulant supplied per hour may be different depending on the degree of reaction of the wastewater.

Therefore, the wastewater introduced into the primary flocculation reactor 300 is stirred by the stirrer 320 in the primary flocculation tank 310 together with the flocculating agent supplied from the flocculating agent tank 330 for primary flocculation, then 2 It may be discharged to the tea agglomeration reactor 400 . The wastewater introduced into the secondary flocculation reactor 400 is agitated by the stirrer 320 in the secondary flocculation tank 410 together with the flocculating agent supplied from the flocculating agent tank 330 for secondary flocculation, followed by a sand filtration device. (500) can be discharged.

Meanwhile, the sand filtering device 500 may include a second filtering tank 510 , a sand filter F2 , gravel, a sand filter F4 , and a strainer F3 . Specifically, the second filtration tank 510 is installed so that the wastewater of the secondary flocculation reaction device 400 flows in the upper part and is discharged to the lower part, and the sand filter F2, gravel, and sand in the second filtration tank 510 . The filter F4 and the strainer F3 may be sequentially disposed from top to bottom. Here, the sand filter F2 and the gravel and sand filter F4 may be stacked at a magnification of approximately 6-8:2-4. In addition, the sand filtration device 500 may further include an air removal pipe connected to the upper portion of the second filtration tank 510 to discharge gas therein.

The sand filter 500 _{induces precipitation of calcium carbonate (CaCO 3} ) or magnesium hydroxide (Mg(OH) ₂ ) to obtain clean brine in a short time. That is, by filling the sand filter F2 with silica rock, silica sand and coke powder, it is possible to reduce antibiotics by generating and utilizing brine. At this time, as the fertilization method, the constant pressure type and the constant speed type may be used alone or in combination.

On the other hand, the ozone and bioactive carbon filtering device 600 may include an ozone reaction tank 610 , an surplus gas ozone removal paper 620 , a bioactive carbon filter 630 and a circulation line 640 .

The ozone reactor 610 may be installed so that wastewater is introduced from the sand filter 500 and discharged to the bioactive carbon filter 630 . In the ozone reaction tank 610, ozone and wastewater may be reacted and mixed.

The surplus gas ozone removal paper 620 may be installed to remove the surplus ozone gas from the mixed water of ozone and wastewater flowing into the ozone reactor 610 . The surplus gas ozone removal paper 620 may be installed by being connected to a gas pipe 621 installed to communicate with the inside of the ozone reactor 610 and the bioactive carbon filter 630 . Accordingly, the ozone surplus gas removal paper 620 may remove the surplus ozone gas discharged through the gas pipe 621 .

The bioactive carbon filter 630 may be installed so that a mixture of ozone and wastewater is introduced and filtered by the bioactive carbon. This bioactive carbon filter 630 has an activated carbon filter (F5), gravel, sand filter (F4) and a strainer (F3) therein may be sequentially disposed from top to bottom. Here, the activated carbon filter F5 and the gravel and sand filter F4 may be stacked in a ratio of approximately 6-8:2-4. This biological activated carbon filter 630 removes pollutants through two mechanisms, adsorption and biodegradation, compared to GAC (Granular Activated Carbon), which depends only on the removal of organic substances, so the removal efficiency of pollutants is high, and compared to general biological treatment methods It has the advantage of being able to remove difficult microorganisms. The high-concentration wastewater separated from the bioactive carbon filter 630 may be collected in a separately provided water collecting tank through a water collecting pipe 960 , and the purified mixed water may flow to the primary water purifying device 700 .

The circulation line 640 may be installed to control the flow and repeated circulation of wastewater by connecting the ozone reactor 610 and the bioactive carbon filter 630 as shown in FIG. 2 . To this end, the circulation line 640 includes a flow pipe 641 , a first return pipe 642 , a second return pipe 643 , an ozone inlet pipe 644 , an ozone supply pipe 645 , a mixer 646 , and a bypass pipe. (647) may be provided. The circulation line 640 may also be installed between the biomass filtering device 200 and the sand filtering device 500 or the primary water purification device 700 and the secondary water purification device 800, and each device and the coagulation tank It can be installed anywhere in between.

First, the flow pipe 641 may be installed by connecting the bioactive carbon filter 630 in the ozone reaction tank 610 . A circulation pump P1 may be installed in the flow pipe 641 so that the mixed water in which the ozone and wastewater discharged from the ozone reactor 610 flows to the biological activated carbon filter 630 . And in the flow pipe 641, the mixed water flows into the second recovery pipe 643, or passes through the second recovery pipe 643 to flow to the bioactive carbon filter 630, after the second recovery pipe 643, 1-1 A valve V1-1 may be installed.

In addition, the first recovery pipe 642 may be installed by connecting the ozone reaction tank 610 from the biological activated carbon filter 630 to the ozone reaction tank 610 so that the mixed water discharged from the biological activated carbon filter 630 is recovered to the ozone reaction tank 610 . A 2-1 valve V2-1 for opening and closing and a check valve Vc for preventing a reverse flow may be installed in the first return pipe 642 .

In addition, the second return pipe 643 may be installed by connecting the second return pipe 643 from the flow pipe 641 between the mixer 646 and the 1-1 valve V1-1. A 1-2 valve V1-2 for opening and closing may be installed in the second return pipe 643 . For this reason, the mixed water that has passed through the mixer 646 may be introduced into the first return pipe 642 through the second return pipe 643 and then be recovered to the ozone reaction tank 610 .

In addition, the ozone inlet pipe 644 may be installed between the ozone reactor 610 and the mixer 646, and one end may be connected to the ozone tank for introducing ozone. A water trap (W) and an injector (I) may be installed in the ozone inlet pipe 644 to inhale and discharge ozone in a vacuum state.

In addition, the ozone supply pipe 645 may be installed by connecting the flow pipe 641 and the ozone inlet pipe 644 . The injector I may be disposed at the connection portion between the ozone supply pipe 645 and the ozone inlet pipe 644 so that the ozone gas of the ozone inlet pipe 644 is discharged to the ozone supply pipe 645 . And a pressure pump P2 is installed in the ozone supply pipe 645 to supply ozone gas flowing in from the injector I to the flow pipe 641, and if necessary, at least one valve for opening and closing the ozone supply pipe 645 is installed. can be At this time, both ends of the ozone supply pipe 645 may be installed by connecting two places of the flow pipe 641 . Therefore, the wastewater discharged from the ozone reactor 610 flows along the flow pipe 641, and after the wastewater and ozone gas are mixed in the flow pipe 641 and/or the ozone inlet pipe 644, it can be supplied to the mixer 646. . Here, an on/off valve and/or a check valve may be installed in the ozone inlet pipe 644 or the ozone supply pipe 645 .

In addition, the mixer 646 may be installed between the ozone reactor 610 and the second return pipe 643 in the flow pipe 641 . This mixer 646 is installed after the circulation pump P1, and can assist mixing of the mixed water and ozone.

In addition, the bypass pipe 647 may be installed by connecting the flow pipe 641 from before the ozone flow pipe 641 to after the 1-1 valve V1-1. An opening/closing valve and/or a check valve may be installed in the bypass pipe 647 . Accordingly, the wastewater discharged from the ozone reactor 610 may directly flow to the bioactive carbon filter 630 without being mixed with ozone.

Meanwhile, the primary water purification apparatus 700 may include a first water purification tank 710 and an AOP lamp 720 (Advanced Oxidation Process lamp). Specifically, the first water purification tank 710 is installed so that the mixed water of the wastewater and ozone discharged from the bioactive carbon filter 630 flows in and out, and the AOP lamp 720 inside the first water purification tank 710. can be installed. Accordingly, the mixed water introduced from the ozone and bioactive carbon filtering device 600 may be first purified through the oxidation treatment process of the AOP lamp 720 in the first water purification tank 710 .

Meanwhile, the secondary water purification device 800 may include a second water purification tank 810 and an activated carbon powder tank 820 . More specifically, the second water purification tank 810 is installed so that the first purified water discharged from the first water purification device 700 flows in and out, and the first water purification tank 810 before flowing in from the second water purification tank 810. An activated carbon powder tank 820 may be installed to supply activated carbon powder to the water.

Here, in the second water purification tank 810, a zeolite filter F6, a gravel, sand filter F4, and a strainer F3 may be sequentially arranged from the top to the bottom. The zeolite filter (F6) and the gravel and sand filter (F4) may be stacked in a ratio of approximately 6-8:2-4. In addition, zeolite is a mineral produced by the rapid action of volcanic ash of the Cenozoic 3rd period by hot water, water molecules are in the form of crystal water, and is a hydrous alumina silicate mineral present in the structure. This zeolite can be particularly used for environmental purification such as microbial adsorption, odor removal, heavy metal adsorption, water purification, wastewater treatment, and gas adsorption. The high-concentration wastewater separated from the secondary water purification device 800 may be collected in a separate water collection tank through a water collection pipe 960 , and the final purified purified water may be discharged through a discharge pipe 970 . On the other hand, by using activated carbon powder together with zeolite, antibiotic removal performance can be significantly improved.

Therefore, the primary purified water discharged from the primary water purification device 700 is introduced into the second water purification tank 810 in a state where the activated carbon powder is mixed, and is filtered by the zeolite filter F6 and the gravel and sand filter F4. It can be finalized.

On the other hand, the biomass filtering device 200, the sand filtering device 500, the bioactive carbon filter 630, the secondary water purifying device 800, or all devices and reaction tanks including these devices absorb dirt on the filter during long-time water purification. Water purification ability may be reduced due to environmental changes such as clogging or clogging with dirt. In order to prevent this, when the pressure difference between the portion where the wastewater is introduced and the portion where the wastewater is discharged is about 0.6 to 0.9 bar or more, preferably 0.8 bar or more, the dirt can be removed through backwashing and washing. In this case, after backwashing is performed, washing may be performed. Hereinafter, for convenience of explanation, the washing water used during backwashing is referred to as 'backwashing washing water', and the washing water used during washing is referred to as 'washing washing water'.

As shown in FIG. 3 , the backwashing and washing line 900 includes a first filtration tank 210 of the biomass filtration device 200 , a second filtration tank 510 of the sand filtration device 500 , and a bioactive carbon filter 630 . ) and the second water purification tank 810 of the secondary water purification device 800 may be installed. In addition, the backwashing and washing line 900 is described by taking the structure installed in the second water purification tank 810 as an example as shown in FIG. 3 , an inlet pipe 910 , a distribution pipe 920 , a washing pipe 930 , A return pipe 940 , an air removal pipe 950 , a water collection pipe 960 , and a discharge pipe 970 may be provided. In addition, the backwashing and washing line 900 is provided with a nozzle for discharging washing water, and the nozzle includes a 3-1 valve V3-1 for supplying wastewater and a 3-3 valve V3 for discharging washing water. -3) It can be installed nearby and operated in conjunction with each valve. Therefore, for the supply and discharge of wastewater and washing water, the valve is referred to so that the description of the nozzle is included, and the nozzle will be briefly mentioned only when necessary.

The inlet pipe 910 may be installed so that wastewater or washing water flows into the lower part of the second water purification tank 810 and is discharged to the discharge pipe 970 . A 3-3 valve V3-3 may be installed in the inlet pipe 910 to discharge the washing water.

The distribution pipe 920 may be installed so that wastewater or washing water is distributed from the inlet pipe 910 and flows into the upper portion of the second water purification tank 810 and is discharged to the water collecting pipe 960 . A 3-1 valve V3-1 is installed in the distribution pipe 920 so that wastewater or washing water is discharged into the second water purification tank 810 , and backwashing washing water located at the upper part of the second water purification tank 810 . A 3-2 valve (V3-2) may be installed so that the In this case, the backwash washing water introduced through the 3-2 valve V3-2 may be collected in a water collecting tank separately installed outside through the water collecting pipe 960 .

The washing pipe 930 is installed to supply external washing water to the inlet pipe 910 , and may be connected after the 3-3 valve V3-3 and between the recovery pipe 940 . In addition, an on/off valve and/or a check valve may be installed in the washing pipe 930 .

The recovery pipe 940 may be installed by connecting the inflow pipe 910 and the distribution pipe 920 . A third-fourth valve V3-4 for opening and closing may be installed in the return pipe 940 . Accordingly, the third-fourth valve V3-4 is opened and the washing water flowing into the recovery pipe 940 may be induced to be discharged to the water collecting pipe 960 through the distribution pipe 920 .

The air removal pipe 950 may be connected to the upper portion of the second water purification tank 810 and installed to communicate with the water collection pipe 960 . A 3-6 valve (V3-6) for opening and closing may be installed in the air removal pipe 950 . Accordingly, gas generated during purification, backwashing, and washing may be discharged to the water collecting pipe 960 through the air removal pipe 950 . The air removal pipe 950 may be installed in a filtration tank and a water purification tank of each device.

The water collecting pipe 960 may be connected to the air removal pipe 950 , the distribution pipe 920 , and the inlet pipe 910 , and may be installed to collect water into a separate water collecting tank provided outside the second water purification tank 810 .

The discharge pipe 970 is connected to the lower portion of the second water purification tank 810 and may be installed so that purified wastewater in the second water purification tank 810 is discharged.

In the case of backwashing based on such a configuration, the 3-2 valve (V3-2) and the 3-3 valve (V3-3) are opened, and the 3-1 valve (V3-1) and the 3-4th valve are opened. The valve V3-4 and the 3-5th valve V3-5 may be closed. In addition, when washing, the 3-1 valve (V3-1) and the 3-4 valve (V3-4) are opened, and the 3-2 valve (V3-2) and the 3-3 valve (V3- 3) and the 3-5th valve (V3-5) may be closed. In addition, in the case of purifying wastewater in general, the 3-1 valve (V3-1) and the 3-5th valve (V3-5) described later are opened, and the 3-2 valve (V3-2), the third The -3 valve (V3-3) and the 3-4th valve (V3-4) may be closed.

<Method>

Hereinafter, a method for water purification by a water purification system in which antibiotic treatment in wastewater is enhanced according to the present invention described above will be described in detail with reference to FIG. 4 . And the process according to the invention can be a water purification process as well as a characterized process, in particular designed to minimize antibiotics.

Referring to FIG. 4 , first, wastewater flows into the aerator 100 ( S10 ). Here, the wastewater may be in a state in which activated sludge is added after solids are removed in the pretreatment process. Sufficient air may be supplied by the blower 120 so that this wastewater flows into the aeration tank 110 of the aeration apparatus 100 and external organic matter is actively decomposed through the aeration pipe 130 in the aeration tank 110 .

Next, the wastewater discharged from the aeration tank 110 is introduced into the biomass filtering device 200 (S20). Wastewater including antibiotics may be partially purified while passing through the straw filter F1, the sand filter F2, and the strainer F3 in the first filtration tank 210 . Here, the gas generated in the first filtration tank 210 may be discharged to the outside through the gas removal pipe.

Next, the wastewater discharged from the biomass filtering device 200 is sequentially introduced into the primary flocculation reactor 300 and the secondary flocculation reactor 400 (S30). Wastewater may be introduced into the primary coagulation reactor 310 to which the coagulant is supplied, and may be agitated by the primary stirrer 320 to be agglomerated. In addition, the primary flocculated wastewater may be introduced into the secondary flocculation tank 410 and may be agitated by the secondary stirrer 320 to be flocculated again.

Next, the wastewater discharged from the secondary flocculation reaction device 400 is introduced into the sand filter device 500 (S40). Wastewater including antibiotics may be purified again while passing through the sand filter F2, gravel, sand filter F4, and strainer F3 in the second filtration tank 510 . In addition, the gas generated in the second filtration tank 510 may be discharged to the outside through the air removal pipe.

Next, the wastewater discharged from the sand filtering device 500 is introduced into the ozone and bioactive carbon filtering device 600 (S50). The wastewater discharged from the sand filter 500 may be introduced into the ozone reactor 610 and mixed with ozone to be purified, and the purified mixed water may be introduced into the biological activated carbon filter 630 to be purified again. Here, the wastewater may be repeatedly recovered to the ozone reactor 610 by the operation of the circulation line 640 , or may pass through the bioactive carbon filter 630 to be recovered back to the ozone reactor 610 . At this time, to describe the operation of the circulation line 640 in detail, when the ozone reaction tank 610 is filled with a preset amount of wastewater, the circulation pump P1 may be operated by the pressure switch. For this reason, the wastewater is discharged from the ozone reactor 610 and passes through the mixer 646, the 1-1 valve V1-1 is closed and the 1-2 valve V1-2 is opened, and the second return pipe It may be recovered to the ozone reaction tank 610 along the 643 and the first return pipe 642 .

As such, when the pressure pump (P2) is operated while the wastewater is repeatedly discharged and recovered, ozone passes through the ozone inlet pipe (644) and the injector (I), passes through the ozone supply pipe (645), and is supplied to the flow pipe (641). can Accordingly, wastewater and ozone may meet in the flow pipe 641 and may be mixed through the mixer 646 . While the mixed water in which the wastewater and ozone are mixed is repeatedly recovered through the second return pipe 643 , antibiotics or contaminants may be reduced by a preset value. Thereafter, the 1-1 valve (V1-1) is opened, and the 1-2 valve (V1-2) is closed, so that the mixed water is introduced into the bioactive carbon filter 630 to be purified again. In addition, the wastewater discharged from the bioactive carbon filter 630 closes the 2-2 valve (V2-2) and opens the 2-1 valve (V2-1) to follow the first return pipe 642 in the ozone reaction tank (610). In this case, the discharge and recovery of the mixed water may be repeated until the mixed water is reduced by a preset value or pollutants are reduced.

In this way, while repeatedly flowing through the bioactive carbon filter 630 and the ozone reactor 610, antibiotics are reduced by a preset value or contaminants are reduced, and then the 2-1 valve (V2-1) is closed and the first The 2-2 valve V2-2 may be opened and discharged. In the meantime, wastewater may flow in a state in which ozone is not mixed by the bypass pipe 647 installed as the biological activated carbon filter 630 in the ozone reactor 610 . In addition, the surplus ozone gas in the ozone reactor 610 and the bioactive carbon filter 630 may be discharged to the surplus gas ozone removal paper 620 through the gas pipe 621 .

Next, the mixed water discharged from the ozone and bioactive carbon filtering device 600 is introduced into the primary water purification device 700 (S60). The wastewater discharged from the bioactive carbon filter 630 may be introduced into the first water purification tank 710 , and may be subjected to oxidation treatment by ultraviolet rays of the AOP lamp 720 installed in the first water purification tank 710 to perform primary purification.

Finally, the mixed water discharged from the primary water purifying device 700 is introduced into the secondary water purifying device 800 (S70). After the activated carbon powder is mixed with the wastewater discharged from the first water purification tank 710 , it may be introduced into the second water purification tank 810 . At this time, in the second water purification tank 810, the zeolite filter F6, the gravel, the sand filter F4, and the strainer F3 may pass through the final purified water. Thereafter, the final purified mixed water is discharged through the discharge pipe 970 , and the filtered pollutants and contaminated water may be discharged to the water collecting tank through the water collection pipe 0 .

On the other hand, at least one of the first filtration tank 210 , the second filtration tank 510 , the bioactive carbon filter 630 and the second water purification tank 810 has backwashing and washing as in FIG. 3 to clean the inside. Line 900 may be installed. The backwashing and operation method of the washing line 900 will be briefly described. In addition, a nozzle for supplying wastewater and washing water is installed, and this nozzle is installed near the 3-1 valve V3-1 for supplying wastewater and the 3-3 valve V3-3 for discharging the washing water It can be operated in conjunction with each valve. Therefore, the supply and discharge of wastewater and washing water will be described in relation to the valve while avoiding direct reference to the nozzle.

During normal water purification operation, valve 3-1 (V3-1) and valve 3-5 (V3-5) are opened, and valve 3-2 (V3-2) and valve 3-3 (V3-3) are opened. ) and the third and fourth valves (V3-4) may be closed. Accordingly, the wastewater passes through the inlet pipe 910 and the distribution pipe 920 and is discharged to the 3-1 valve V3-1, purified and then the discharge pipe 970 of the 3-5th valve V3-5 opened. ) through which it flows. As such, when the pressure difference between the portion where the wastewater is introduced and the portion where the wastewater is discharged is about 0.6 bar or more or 0.8 bar or more while the purification operation is continued, the inside of the second water purification tank 810 is washed. In this case, backwashing in which the washing water is discharged from the bottom to the top and washing in which the washing water flows from the top to the bottom after backwashing may be performed on the inside of the second water purification tank 810 .

First, in backwashing, the 3-2 valve (V3-2) and the 3-3 valve (V3-3) are opened, and the 3-1 valve (V3-1) and the 3-4 valve (V3-4) are opened. ) and the 3-5th valve (V3-5) may be closed. Therefore, the washing water flows into the inlet pipe 910 through the washing pipe 930 and then is discharged upward in connection with the 3-3 valve V3-3, and is interlocked with the 3-2 valve V3-2. After being introduced into the distribution pipe 920 , it may be discharged through the water collecting pipe 960 .

And for washing, the 3-1 valve (V3-1) and the 3-4 valve (V3-4) are opened, the 3-2 valve (V3-2), the 3-3 valve (V3-3) and The 3-5th valve V3-5 may be closed. Accordingly, the washing water is supplied downward in connection with the 3-1 valve (V3-1), and flows into the recovery pipe 940 in conjunction with the 3-4 valve (V3-4), and then the distribution pipe 920 and the collection pipe 920 It may be discharged through the water pipe 960 .

Thereafter, when backwashing and washing are completed, a routine water purification operation may be performed.

<Experiment>

As described above, the present invention is a system and method for effectively reducing or removing antibiotics while purifying wastewater including livestock manure. Therefore, the content of antibiotics was measured while purifying the wastewater of livestock manure. Here, among the antibiotics, chlor tetracycline, oxi tetracycline, flor fenicol, sulfa methoxazole, sulfathiazole, It was measured for tiamulin and tylosin.

For this measurement, as shown in FIG. 1, the point at which raw wastewater flows into the aerator 100 (point 'A'), the point where it passes through the aeration device 100 (point 'B'), and the secondary coagulation tank ( 410) (point 'C'), the point that passed the sand filter 500 (point 'D'), the point that passed the ozone and bioactive carbon filter 600 (point 'E') and , a predetermined amount of wastewater sample was extracted from the point passing through the secondary water purifier 800 ('bar' point), and the antibiotics measured from the wastewater sample were measured. At this time, the components of pig manure used in the experiment are described in [Table 1], the measured types of antibiotics are described in [Table 2], and antibiotics from samples extracted at specific points while passing through the system of the present invention The measured result value is described in [Table 3] below, and the residual ratio is also described in [Table 4].

Processing capacity (m/day ³ ) 30 to 40 treated water Throughput (%) LMSS (mg/L) 15,000 14.4 99.99 BOD (mg/L) 20,000 96 99.55 TN (ng/L) 5,300 34.5 99.35 TP (mg/L) 650 0.479 99.93 pH 8.5 7.4 7.4 ℃ 28 29 29

Product Name Korean name chemical formula Molecular Weight CAS number Chlor
tetracyline chlor
tetracycline C22H23CIN208 478.89 g/mol 57-62-5 Oxi
tetracyline oxy
tetracycline C22H24N09 460.44 g/mol 57-62-535 Florfenicol Florphenicol C12H14CL2FN04S 358.21266 g/mol 73231-34-2 Sulfa
methoxazole sulfa methoxazole C10H11N303S 253.276 g/mol 723-46-6 Sulfa thizole sulfathiazole C9H9N302S2 278.36 g/mol 72-14-0 Tiamulin Thiamolin C28H47N04S 493.742 g/mol 55297-96-6 Tylosin Tyrosine C9H11N03 181.19 g/mol 200-460-4

(unit ppt) extraction point Chlor Tetracycline Oxytetracycline Florphenicol sulfa
methoxazole sulfa
thiazole Thiamolin Tyrosine 'A' branch 64.0 47.7 11.6 5.1 4.3 171.4 12.4 'I' branch 37.8 23.6 N.D. 5.8 5.8 28.9 5.2 'da' point 12.6 13.0 N.D. 7.3 6.1 30.7 9.8 'La' branch 11.9 9.5 4.8 3.3 2.0 19.4 4.8 'Ma' branch 4.3 5.1 N.D. 3.1 2.4 7.7 8.2 'Bar' branch 1.2 3.8 N.D. 2.5 2.0 3.6 3.1

(unit %) extraction point chlor
tetracycline oxy
tetracycline sulfa
methoxazole sulfa
thiazole Thiamolin Tyrosine 'I' branch 59.06 49.48 113.73 134.88 16.86 41.94 'da' point 19.69 27.25 143.14 141.86 17.91 79.03 'La' branch 18.59 19.92 64.71 46.51 11.32 38.71 'Ma' branch 6.72 10.69 60.78 55.81 4.49 66.13 'Bar' branch 6.72 7.97 49.02 46.51 2.10 25 total reduction ratio 98.12 92.03 50.98 53.49 97.90 75

Looking at the table above, it was possible to obtain an overall even reduction efficiency for CTC and OTC including tetracycline series and sulfa series, and SMZ and STZ series.

Therefore, when livestock manure, especially pig manure, is purified according to the system and method of the present invention, it has an excellent effect on antibiotics.

As described above, those skilled in the art to which the present invention pertains will be able to understand that the present invention may be embodied in other specific forms without changing the technical spirit or essential features thereof. Therefore, it should be understood that the above-described embodiments are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the claims described later rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts should be interpreted as being included in the scope of the present invention. do.

100: aeration device
110: aeration tank 120: blower
130: diffuse organ
200: biomass filtration device
210: first filtration tank
300: 1st Coagulation Reactor
310: 1st coagulation tank 320: stirrer
330: coagulant tank
400: Secondary Coagulation Reactor
410: secondary coagulation tank
500: sand filter device
510: second filtration tank
600: ozone, biological activated carbon filtration device
610: ozone reactor 620: surplus gas ozone removal paper
621: gas pipe 630: biological activated carbon filter
640: circulation line 641: flow pipe
642: 1st recovery pipe 643: 2nd recovery pipe
644: ozone inlet pipe 645: ozone supply pipe
646: Mixer 647: Bypass pipe
700:1 primary water purification device
710: first water tank 720: AOP lamp
800: Secondary water purification device
810: second water purification tank 820: activated carbon powder tank
900: backwashing, washing line
910: inlet pipe 920: distribution pipe
930: Customs office 940: Collection office
950: air removal pipe 960: water collection pipe
970: exhaust pipe
F1: Rice straw filter F2: Sand filter
F3: strainer F4: gravel, sand filter
F5: Activated carbon filter F6: Zeolite filter
P1: Circulation pump P2: Pressurized pump
V1-1: No. 1-1 valve V1-2: No. 1-2 valve
V1-3: No. 1-3 valve V2-1: No. 2-1 valve
V2-2: No. 2-2 valve V3-1: No. 3-1 valve
V3-2: No. 3-2 valve V3-3: No. 3-3 valve
V3-4: No. 3-4 valve V3-5: No. 3-5 valve
V3-6: No. 3-6 valve Vc: Check valve
W: Water trap.
I: Injector.

Claims (8)

In a system for treating wastewater from which solids are separated,
The ozone reaction tank 610 into which the wastewater is introduced, the bioactive carbon filter 630 into which the mixed water mixed with wastewater and ozone flows from the ozone reaction tank 610, and the ozone reaction tank 610 and the bioactive carbon filter 630 Arranged between and ozone and bioactive carbon filtering device 600 having a circulation line 640 installed to supply and recover the mixed water.
The circulation line 640 is a flow pipe 641 installed so that mixed water is supplied from the ozone reactor 610 to the biological activated carbon filter 630, and the first installed so that the mixed water is recovered from the biological activated carbon filter 630 to the ozone reactor 610. The recovery pipe 642, the second recovery pipe 643 installed by connecting the flow pipe 641 and the first recovery pipe 642, and ozone installed to supply ozone in the flow pipe 641 before the second recovery pipe 643 It is disposed in the supply pipe 645, the ozone inlet pipe 910 installed to supply external ozone to the ozone supply pipe 645, and the flow pipe 641 between the ozone supply pipe 645 and the second return pipe 643 to provide wastewater and ozone. The mixer 646 installed to mix the mixture, the discharge pipe 970 installed to discharge the mixed water purified from the bioactive carbon filter 630, and the mixer 646 in the flow pipe 641 and the 1-1 valve (V1-1) A water purification system with enhanced antibiotic treatment in wastewater, characterized in that it has a bypass pipe (647) installed to flow to the bioactive carbon filter (630) by avoiding mixing of the wastewater with ozone by connecting thereafter.
In claim 1,
The circulation line 640 includes the circulation pump P1 installed in the flow pipe 641, the pressure pump P2 installed in the ozone supply pipe 645, and the first 1- installed after the second return pipe 643 in the flow pipe 641. Valve 1 (V1-1), valve 1-2 installed in the second return pipe (V1-2), valve 2-1 installed in the first return pipe 642 (V2-1) and check valve (Vc) , the 2-2 valve (V2-2) installed in the discharge pipe (970), the valves installed in the ozone inlet pipe (644) and the ozone supply pipe (645), the ozone reaction tank (610), and the surplus gas in the bioactive carbon filter (630) A gas pipe 621 installed to flow, a surplus gas ozone removal paper 620 connected to the gas pipe 621 and installed to remove excess ozone gas, and an ozone supply pipe 645 connected at both ends to the flow pipe 641 using a vacuum. In order to supply ozone, the injector (I) installed at the site where the ozone supply pipe (645) and the ozone inlet pipe (644) are connected, and a water trap (W) installed in the ozone inlet pipe (644) A water purification system with enhanced antibiotic treatment in wastewater, characterized in that
In claim 1,
an aeration device 100 including an aeration tank 110 into which wastewater from which solids have been removed is introduced and stored, and a blower 120 for supplying air to the aeration pipe 130 in the aeration tank 110 ;
a biomass filtration device 200 installed to introduce wastewater discharged from the aeration device 100;
a first coagulation tank 310 and a second coagulation tank 410 installed so that the wastewater discharged from the biomass filtration device 200 is sequentially introduced;
a coagulant tank 330 installed to administer a coagulant to the first coagulation tank 310 and the second coagulation tank 410;
a sand filtration device 500 installed so that the wastewater discharged from the secondary coagulation reactor 410 is introduced and discharged to the ozone reactor 610 of the ozone and bioactive carbon filtration device;
a primary water purifying device 700 installed so that the mixed water discharged from the bioactive carbon filter 630 of the ozone and biological activated carbon filtering device 600 is introduced;
a secondary water purifying device 800 installed so that the mixed water discharged from the first water purifying device 700 flows in;
an activated carbon powder tank 820 installed to supply activated carbon powder to the mixed water flowing into the secondary water purification device 800; Antibiotic treatment enhanced water purification system in wastewater, characterized in that it further comprises at least one of.
In claim 3,
The first filtration tank 210 of the biomass filtration device 200, the second filtration tank 510 of the sand filtration device 500, the bioactive carbon filter 630 and the second water purification tank of the secondary water purification device 800 ( 810), a backwashing, washing line 900 for internal washing is installed in at least one,
The backwashing and washing line 900 includes an inlet pipe 910 installed to introduce wastewater or washing water into a filtration tank or a water purification tank, a 3-3 valve (V3-3) installed in the inlet pipe 910, and a third 3- The distribution pipe 920 installed to supply wastewater to the upper part of the filtration tank or water purification tank by being distributed from the inlet pipe 910 before the 3rd valve (V3-3), the 3-1 valve installed to discharge wastewater from the distribution pipe 920 (V3-1), the 3-2 valve (V3-2) installed after the 3-1 valve (V3-1), the 3-3 valve (V3-3) of the inlet pipe 910 and the distribution pipe The return pipe 940 installed by connecting after the 3-2 valve V3-2 of 920, the 3-4 valve V3-4 installed in the recovery pipe 940, and the distribution pipe 920 The collection pipe 960 connected after the connection part of the recovery pipe 940 and installed to discard wastewater to an external water collection tank, the discharge pipe 970 installed to discharge the purified wastewater from the filtration tank or the water purification tank, and the third installed in the discharge pipe 970 - characterized in that it comprises a -5 valve (V3-5) and a washing water pipe (930) connected between the 3-3 valve (V3-3) and the return pipe (940) in the inlet pipe (910) to supply washing water A water purification system with enhanced antibiotic treatment in wastewater.
In the method for purifying wastewater using the system of any one of claims 1 to 4,
The wastewater flows into the ozone and bioactive carbon filter device 600, is mixed with ozone in the ozone reaction tank 610 through the circulation line 640, and is purified, and the purified mixed water is introduced into the bioactive carbon filter 630 and again A 50th step (S50) of being purified; including,
Wastewater is discharged from the ozone reactor 610 by the circulation line 640 and passes through the mixer 646, the 1-1 valve V1-1 is closed and the 1-2 valve V1-2 is opened. is recovered to the ozone reaction tank 610 along the second recovery pipe 643 and the first recovery pipe 642, and then discharged again. It passes through the ozone inlet pipe 644 and the injector I in a vacuum state and is supplied to the flow pipe through the ozone supply pipe 645, and the wastewater and ozone of the flow pipe 641 pass through the mixer 646 and are mixed, and preset The discharge and withdrawal are repeated until the measured value is reached,
When the set measurement value is reached, the 1-1 valve (V1-1) is opened and the 1-2 valve (V1-2) is closed, the mixed water flows into the biological activated carbon filter 630, and the 2-2 valve (V2) -2) is closed and the 2-1 valve V2-1 is opened, and the mixed water is recovered to the ozone reactor 610 along the first return pipe 642, and discharged and recovered until a preset measurement value is reached. A water purification method with enhanced antibiotic treatment in wastewater, characterized in that repeated.
In claim 5,
a tenth step (S10) of introducing wastewater from which solids have been removed into the aeration tank 110 of the aeration device 100, and supplying air to the aeration pipe 130 in the aeration tank 110 through the blower 120;
The wastewater discharged from the aeration device 100 is introduced into the first filtration tank 210 of the biomass filtration device 200, and passes through a rice straw filter (F1), a sand filter (F2) and a strainer (F3) to be purified. Step 20 (S20);
a thirtieth step (S30) of the wastewater discharged from the biomass filtering device 200 being sequentially introduced into the primary flocculation reactor 300 and the secondary flocculation reactor 400 and coagulated by a coagulant and a stirrer;
The wastewater discharged from the secondary flocculation reaction device 400 flows into the second filtration tank 510 of the sand filtration device 500 and passes through the sand filter F2, the gravel, the sand filter F4 and the strainer F3. a 40th step of being purified (S40);
The wastewater discharged from the sand filtering device 500 passes through the ozone reaction tank 610 and the biological activated carbon filter 630 in the 50th step (S50) to the first water purification tank 710 of the primary water purification device 700. A 60th step (S60) of being introduced and oxidized by the AOP lamp 720; and
The mixed water discharged from the primary water purification device 700 is added to the activated carbon powder, and then flows into the second water purification tank 810 of the secondary water purification device 800, and a zeolite filter (F6), gravel, and sand filter (F4). ) and a 70th step (S70) of passing the strainer (F3);
In claim 6,
The first filtration tank 210 or the 22nd filtration tank 510 or the first water purification tank 710 or the 22nd water purification tank 810 is backwashed and washed,
During backwashing, the 3-2 valve (V3-2) and the 3-3 valve (V3-3) are opened, and the 3-1 valve (V3-1) and the 3-4 valve (V3-4) are opened. and the 3-5th valve (V3-5) is closed, and after washing water flows into the inlet pipe 910 through the washing pipe 930, it is interlocked with the 3-3 valve (V3-3) and discharged upward, It is interlocked with the 3-2 valve (V3-2), flows into the distribution pipe 920, and then is discharged through the water collecting pipe 960,
When washing after backwashing is complete, valve 3-1 (V3-1) and valve 3-4 (V3-4) are opened, and valve 3-2 (V3-2) and valve 3-3 ( V3-3) and the 3-5th valve (V3-5) are closed, the washing water is supplied downward through the open 3-1 valve (V3-1), and the opened 3-4 valve (V3-4) ) through the return pipe 940 and then discharged through the distribution pipe 920 and the water collecting pipe 960,
When the purified water is operated after washing, the 3-1 valve (V3-1) and the 3-5 valve (V3-5) are opened, and the 3-2 valve (V3-2) and the 3-3 valve (V3- 3) and the 3-4th valve (V3-4) are closed, the wastewater is supplied downward in conjunction with the 3-1st valve (V3-1), and the purified wastewater is discharged through the discharge pipe (970) A water purification method with enhanced antibiotic treatment in wastewater. delete

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