KR100397167B1 - Filter deaning method using reverse direct airblow washing - Google Patents

Filter deaning method using reverse direct airblow washing Download PDF

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Publication number
KR100397167B1
KR100397167B1 KR10-2000-0077868A KR20000077868A KR100397167B1 KR 100397167 B1 KR100397167 B1 KR 100397167B1 KR 20000077868 A KR20000077868 A KR 20000077868A KR 100397167 B1 KR100397167 B1 KR 100397167B1
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South Korea
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air
filter
water
main
media
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KR10-2000-0077868A
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Korean (ko)
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KR20010067407A (en
Inventor
김정호
최돈혁
김병혁
김응태
문필중
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코스맥 주식회사
한국수자원공사
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Priority to KR10-2000-0077868A priority Critical patent/KR100397167B1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D24/00Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/46Regenerating the filtering material in the filter
    • B01D24/4631Counter-current flushing, e.g. by air
    • B01D24/4636Counter-current flushing, e.g. by air with backwash shoes; with nozzles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00Flanged joints
    • F16L23/02Flanged joints the flanges being connected by members tensioned axially
    • F16L23/024Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes

Abstract

본 발명은 원수를 정수처리하는 여과지에서 여재를 전층에 걸쳐 공기 역세척시키도록 하는 여과지 공기 역세척용 산기장치에 관한 것이다.The present invention relates to an air purifier for filter paper air backwashing, wherein the filter medium for purifying raw water is used to backwash the media over the entire layer.

이러한 본 발명은 여재하부에 여러개의 지관이 30㎝간격으로 양측에 고정된본관을 포설하고, 상기 지관의 하부 양측에는 최하부에서 45°각도를 갖는 위치에 15㎝간격으로 에어홀을 형성시키고, 본관과 지관의 최하부에는 1∼1.5m 간격으로 배수구멍을 형성시킨 후 상기 본관에 에어를 공급하도록 하므로써 이루어진다.In the present invention, a plurality of branch pipes are installed on both sides of the lower part of the median at 30 cm intervals, and the lower sides of the branch pipes form air holes at 15 cm intervals at positions having a 45 ° angle at the bottom, At the bottom of the branch pipe, drain holes are formed at intervals of 1 to 1.5 m to supply air to the main pipe.

Description

여과지 공기 역세척용 산기장치{Filter deaning method using reverse direct airblow washing}Filter deaning method using reverse direct airblow washing}

본 발명은 원수를 정수처리하는 여과지에서 여재를 전층에 걸쳐 공기 역세척시키도록 하는 여과지 공기 역세척용 산기장치에 관한 것이다.The present invention relates to an air purifier for filter paper air backwashing, wherein the filter medium for purifying raw water is used to backwash the media over the entire layer.

기존의 정수처리 계통도는 도 1 에 도시된 바와 같이 댐(1)에서 취수된 정수원수의 수위동요를 안정화시키는 착수정(2)과, 착수정(2)에서 안정화된 정수원수에 수처리약품을 넣어 섞어주는 혼화지(3)와, 혼화지(3)에서 응집된 플록(floc)을 침전가능한 덩어리로 만들어주는 응집지(4)와, 응집지(4)에서 형성된 플록을 중력에 의해 자연침강시켜 침전시키는 침전지(5)와, 침전지(5)에서 플록이 제거된 정수원수를 여과시키는 여과지(6)와, 여과지(6)에서 여과된 원수에 염소 등의 소독약품을 투입시켜 최종 정수시킨 후 가정집(8)으로 공급하는 정수지(7)로 이루어진다.Existing water treatment system is shown in Figure 1 to mix the water treatment chemicals in the impregnating well (2) to stabilize the water level fluctuations of the purified water from the dam (1), and the purified purified water from the impingement (2) as shown in FIG. To settle the mixed paper (3), the flocculant (4) which makes the floc aggregated in the mixed paper (3) into a sedimentable mass, and the floc formed in the flocculation paper (4) by natural sedimentation by gravity In the sedimentation basin (5), filter paper (6) for filtering the purified water from which floc has been removed from the sedimentation basin (5), and disinfecting chemicals such as chlorine are added to the raw water filtered out of the filter paper (6), and then the home house (8) It consists of the purified paper 7 supplied to).

이같은 정수처리계통 중 여과지(6)에서는 원수중의 현탁물질을 응집한 후 입상충에 비교적 빠른 속도로 물을 통과시켜 여재에 부착시키거나 여층에서 체거름작용에 의해 탁질을 제거하게 된다.In the filter paper 6 of the water treatment system, the suspended solids in the raw water are aggregated and water is passed through the granules at a relatively high speed to adhere to the media or to remove the turbidity by filtration.

기존의 일반적인 급속여과지는 여재가 모래단층으로 구성되어 탁질이 표층부에만 억류되므로 여재의 상부에서 물을 분사시키는 표면세척과 여과지 하부에서 물로 역세척하는 것에 의해 충분한 여재세척효과를 내었으나, 최근 원수중 에 조류가 많이 발생함에 따라 여과지의 표면이 쉽게 막혀 더 이상 여과를 진행할 수 없어 정수생산이 불가능한 경우가 초래되고 있으며, 이렇게 공극이 쉽게 막히는 것을 방지하기 위해 발명된 것이 모래 보다 비중이 가벼우면서도 공극이 큰 안트라사이트를 이용한 이층여과방법이 최근에 확대 설치되고 있는 추세이다.Existing general rapid filter has sufficient filter media washing effect by surface washing spraying water from the upper part of filter media and back washing with water under filter paper because filter medium is composed of sand monolayer and turbidity is detained only at surface layer part. As a lot of algae are generated in the filter paper, the surface of the filter paper is easily blocked, and thus it is impossible to carry out filtration anymore, which leads to the inability to produce purified water. The two-layer filtration method using large anthracite has recently been expanded.

그러나 안트라사이트는 모래 보다 가격이 7-8배 고가이면서 비중이 가벼워 역세척시 유실문제가 발생되고, 또한 탁질을여재 깊숙히 침투시켜 제거하므로 기존의 표면세척방식으로는 충분한 세척효과를 기대하기 곤란한 것이었다.However, anthracite is 7-8 times more expensive than sand and light in weight, causing loss of backwashing, and infiltrating and removing turbidity deeply. .

또한 기존에 모래와 안트라사이트의 이중여재의 효과적인 공기방울의 세척원리를 이용한 공기역세척용 여과지가 일부실시되고 있으나 이는 가격이 너무 비싸고 기존 여과지에서는 적용시킬 수 없는 문제점이 따르게 된다.In addition, some of the air backwash filter paper using the principle of washing the effective air bubbles of sand and anthracite double media, but this is too expensive and can not be applied in the existing filter paper.

이같이 여과가 진행되는 동안 여재사이의 공극은 억류된 탁질로 채워진 후 공극이 막히면서 더이상 여과를 할 수 없는 최종손실수두에 도달하게 되므로 이때에는 물흐름과 반대되는 방향에서 세척을 실시하게 되는데 기존에는 여재의 표면만 세척하고 물로써 역세척을 하게 되어 여재 사이에 낀 탁질을 효율적으로 제거할 수 없는 것이었다.As the pores between the media are filled with detained turbidity during the filtration process, the pores are blocked and reach the final loss head which can no longer be filtered. At this time, washing is performed in the opposite direction to the water flow. Only the surface of the filter was washed and backwashed with water, so that the turbidity between the media could not be removed efficiently.

본 발명은 여과지의 여재 하부에서 공기를 분출시켜 공기방울의 세척원리로 여재사이에 낀 탁질을 효율적으로 제거하도록한 것으로써, 여과지의 여재하부에서 공기방울을 발생시켜 공기방울이 여재사이를 통과하면서 여재사이의 탁질을 세척해주는 것이다.The present invention is to eject the air from the filter media lower filter media to efficiently remove the turbidity trapped between the media by the cleaning principle of the air bubbles, to generate air bubbles in the filter media lower air bubbles while passing through the media It is to wash the turbidity in between.

이러한 본 발명은 여재하부에 여러개의 지관이 양측으로 형성된 본관을 포설하고 상기 본관과 지관의 하부에 일정간격의 에어홀을 형성시킨 후 상기 본관에 에어를 공급하도록 하므로써 이루어지는 것으로, 본관에 에어를 공급하면 본관과 지관에 형성된 에어홀로 분출되며 공기방울을 발생시키게되고 공기방울은 여재사이를 통과하면서 여재사이 공극에 억류된 탁질을 세척시킴으로써 여재 사이에 낀 탁질을 효율적으로 제거하는 것이다.The present invention is made by installing a main tube formed with both branches on the lower side of the filter medium and forming an air hole at a predetermined interval in the lower part of the main tube and the branch pipe to supply air to the main tube. When the air is formed in the main and branch pipes are blown out to generate air bubbles, and the air bubbles pass through the media and efficiently remove the turbidity trapped between the media by washing the media trapped in the pores between the media.

도 1 은 정수처리 계통도1 is a schematic diagram of a water treatment system

도 2 는 본 발명의 실시상태 여과지 단면도Figure 2 is a cross-sectional view of a filter paper of an embodiment of the present invention

도 3 은 본 발명의 실시상태 계통도3 is a schematic diagram of an embodiment of the present invention.

도 4 는 본 발명의 산기장치 평면도Figure 4 is a plan view of the diffuser of the present invention

도 5 는 본 발명의 산기장치 배면도Figure 5 is a rear view of the diffuser of the present invention

도 6 은 본 발명의 산기장치 정면도Figure 6 is a front view of the diffuser of the present invention

도 7 은 본 발명의 산기장치 지관 단면도도 8 은 본 발명의 산기장치 에어분출시 단면도7 is a cross-sectional view of the air diffuser branch pipe of the present invention.

[도면의 주요부분에 대한 부호의 설명][Explanation of symbols on the main parts of the drawings]

6 : 여과지 14 : 안트라사이트 15 : 모래6: filter paper 14: anthracite 15: sand

16 : 자갈 18 : 스트레이너블록 20 : 산기장치16: gravel 18: strainer block 20: diffuser

21 : 본관 22 : 지관 25 : 연결관21: main building 22: branch 25: connector

27 : 에어홀 28,29 : 배수구멍27: air hole 28, 29: drain hole

여과지(6)는 도 2 에 도시된 바와같이 스트레이너(17)가 구비된 스트레이너블럭(18)위에 자갈(16)을 깔고 그 위에 모래(15)와 안트라사이트(14)등의 여재를 깔아주게 되며 정수원수(13)는 배수로(11)에서 상기된 여재를 통과한 후 하부집수구(12)를 통하여 배출되게 구성되며 이러한 여과지(6)의 여재구성은 일반적인 사항이다.As shown in FIG. 2, the filter paper 6 lays the gravel 16 on the strainer block 18 provided with the strainer 17 and lays the media such as sand 15 and anthracite 14 on the strainer block 18. The purified water 13 is configured to be discharged through the lower catchment port 12 after passing through the above-mentioned media in the drainage passage 11, and the media configuration of the filter paper 6 is a general matter.

본 발명의 상기 스트레이너블럭(18)위에 본관(21)과 지관(22)으로 구성된 산기장치(20)를 포설하고 상기 본관(21)에 블로워(23)등의 에어공급장치로부터 에어를 공급하게 한 것으로, 스트레이너블럭(18)의 중앙에는 본관(21)이 포설되고 본관(21)의 양측으로는 빗살형태로 다수의 지관(22)이 30㎝간격으로 형성된다.An air dispersing device 20 composed of a main pipe 21 and a branch pipe 22 is installed on the strainer block 18 of the present invention, and the main pipe 21 is supplied with air from an air supply device such as a blower 23. The main tube 21 is installed at the center of the strainer block 18, and a plurality of branch pipes 22 are formed at intervals of 30 cm on both sides of the main tube 21 in the form of combs.

여기서 본관(21)은 양측으로 또다른 본관(21)을 연결하기 위한 연결후렌지(24)가 형성되고 상부 일측에는 에어가 공급되는 연결관(25)을 연결하기 위한 연결후렌지(26)가 형성되며 150㎜의 직격을 갖는 본관(21)보다 작은 50㎜직경을 갖는 지관(22)선단은 막힌 형태로 형성된다.Here, the main tube 21 has a connecting flange 24 for connecting another main tube 21 to both sides, and a connecting flange 26 for connecting a connecting tube 25 to which air is supplied is formed at one upper side thereof. The tip of the branch pipe 22 having a 50 mm diameter smaller than the main pipe 21 having a 150 mm straight line is formed in a closed shape.

지관(22)의 하단 양측으로 최하측과 45°각도를 갖고 150㎜간격으로 5㎜의 직경을 갖는 에어홀(27)을 뚫어주고, 본관(21)과 지관(22)의 최하단부에는 물의 유입에 의한 단면적 축소를 방지하기 위한 배수구멍(28)(29)을 1∼1.5m 간격으로 뚫어준다.Drill the air hole 27 having a diameter of 45 mm at the bottom side and the bottom side of the branch pipe 22 with a diameter of 5 mm at 150 mm intervals, and at the bottom end of the main pipe 21 and the branch pipe 22 for the inflow of water. Drainage holes 28 and 29 are drilled at intervals of 1 to 1.5 m to prevent cross-sectional area reduction.

에어홀(27)은 에어분출시 마찰손실을 최소화하기 위해 유선형으로 가공한다.The air hole 27 is streamlined to minimize frictional loss during air ejection.

이러한 본 발명에서 지관(22)이 형성된 본관(21)은 연결후렌지(24)로 연결하여 스트레이너블록(18)위에 전체적으로 포설하고 본관(21)의 연결후렌지(26)와 연결관(25)을 연결시켜 블로워(23)에서 발생된 에어가 연결관(25)과 본관(21)을 통하여 지관(22)으로 유입되게 한다.이때 지관(22)에는 에어홀(27)과 배수구멍(28)(29)을 통하여 물이 채워져 있게되나 지관(22)으로 에어가 유입되면 에어가 지관(22)내에 차있던 물을 밀어내게 되고, 에어가 공급될수록 물이 배출되어 에어홀(27)을 통하여 에어가 배출되게 되며 물은 에어가 공급되는 동안에 배수구멍(28)으로 빠지게 된다.즉 물이 채워져 있는 지관(22)에 에어가 공급되면 에어가 물을 밀어내면서 에어홀(27)로 배출되게 되며, 도 8 에 도시된 바와 같이 에어가 물을 밀어낸후 에어홀(27)로 빠질때 물은 에어압력에 의해 에어홀(27)이 노출되는 만큼의 수위를 유지하게 되고 물은 배수구멍(28)을 통하여 배출되게 된다.In the present invention, the main pipe 21 formed with the branch pipe 22 is connected to the connecting flange 24 to be installed on the strainer block 18 as a whole and to connect the connecting flange 26 and the connecting pipe 25 of the main pipe 21. The air generated in the blower 23 is introduced into the branch pipe 22 through the connecting pipe 25 and the main pipe 21. At this time, the branch pipe 22 has an air hole 27 and a drain hole 28 (29). Water is filled through the) but when air flows into the branch pipe 22, the air pushes out the water filled in the branch pipe 22, and the water is discharged as the air is supplied, and the air is discharged through the air hole 27. The water is drained into the drain hole 28 while the air is supplied. That is, when the air is supplied to the branch pipe 22 filled with water, the air is discharged into the air hole 27 while pushing the water out. As shown in Fig. 1, when air is pushed out of the water and into the air hole 27, the water is released by the air pressure. The water level is maintained as much as the hole 27 is exposed and water is discharged through the drain hole 28.

따라서 지관(22)으로 유입된 에어는 에어홀(27)을 통하여 외부로 분출되며 공기방울을 형성시키게 되고 에어홀(27)을 통과하며 형성된 공기방울은 여재사이를 통과하면서 여재 사이에 낀 탁질을 효율적으로 제거하게 되며, 본관(21)과 지관(22)의 최하부에 1∼1.5m 간격을 두고 뚫어준 배수구멍(28)(29)은 물의 유입에 의한 본관(21)과 지관(22)의단면적 축소를 방지하게 된다.Therefore, the air introduced into the branch pipe 22 is ejected to the outside through the air hole 27 to form air bubbles, and the air bubbles formed through the air holes 27 pass through the media and trap the turbidity between the media. The drainage holes 28 and 29 drilled at the bottom of the main pipe 21 and the branch pipe 22 at intervals of 1 to 1.5 m are efficiently removed, and the ends of the main pipe 21 and the branch pipe 22 by the inflow of water. It will prevent the reduction of area.

또한 에어홀(27)은 지관(22)의 최하부에서 양측으로 45°각도를 주고 뚫어주어 이물질의 유입으로 인하여 에어홀(27)이 막히지 않도록 하고, 에어홀(27)을 유선형으로 가공하여 에어분출시 마찰손실을 최소화시키게 된다.In addition, the air hole 27 is provided at an angle of 45 ° to both sides from the bottom of the branch pipe 22 so that the air hole 27 is not blocked due to the inflow of foreign substances, and the air hole 27 is processed in a streamline to eject the air. Minimizes frictional losses

본 발명의 본관(21)과 지관(22)은 일정길이를 한조로 하여 구성하므로써 설치 및 시공이 용이하도록 하였다.The main building 21 and the branch pipe 22 of the present invention have a constant length as a set to facilitate installation and construction.

본 발명은 산기장치를 여과지의 스트레이너 블럭 위에 설치하므로써 여재전층을 공기방울로 세척하여 여과지 수명을 연정하고 역세척에 소요되는 물량을 감소시켜 궁극적으로 정수처리비용을 줄이고 양질의 정수를 원활히 공급할 수 있는 것이다.The present invention is installed on the strainer block of the filter paper by washing the filter media layer with air bubbles to extend the life of the filter paper and reduce the amount of water required for backwashing, ultimately reducing the cost of water purification and smooth supply of good water purification will be.

Claims (2)

본관의 양측으로 본관보다 작은 직경을 갖고 선단부가 막힌 지관을 30㎝간격으로 설치하고, 지관의 최하측에서 상측으로 45°각도를 갖는 에어홀을 양측으로 형성시키되 상기 에어홀은 15㎝간격으로 형성시키며, 상기 본관과 지관의 최하측에는 1∼1.5m 간격으로 배수구멍을 뚫어주고, 상기 본관에는 에어공급장치로부터 에어를 공급하는 연결관을 설치하여 된 것을 특징으로 하는 여과지 공기 역세척용 산기장치.On both sides of the main building, a branch with a smaller diameter than the main building and a closed end is installed at intervals of 30 cm, and air holes with a 45 ° angle from the bottom of the branch to the upper side are formed on both sides, but the air holes are formed at intervals of 15 cm. And a lower portion of the main pipe and the branch pipe, each having a drainage hole formed at an interval of 1 to 1.5 m, and the main pipe having a connection pipe for supplying air from the air supply device. 제 1 항에서, 본관의 양측으로는 또다른 본관을 연결하는 연결후렌지가 현성되고 본관의 일측상부에는 연결관을 연결하는 연결후렌지가 형성된 것을 특징으로 하는 여과지 공기 역세척용 산기장치.According to claim 1, Both sides of the main building is connected to the other main flange is connected to the main body of one side of the main building is connected to the connecting flange is formed, characterized in that the air filter for backwash air filter.
KR10-2000-0077868A 2000-12-18 2000-12-18 Filter deaning method using reverse direct airblow washing KR100397167B1 (en)

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KR101151242B1 (en) 2011-10-28 2012-06-07 주식회사 동호엔지니어링 Rainwater treatment apparatus

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KR100799249B1 (en) * 2005-04-06 2008-01-30 주식회사 지승개발 Air uniform supplying apparatus of lower water collecting chamber for filter basin
KR100831000B1 (en) * 2006-12-28 2008-05-20 (주) 디아이엔바이로 Air uniform supplying apparatus of rapid filter system
CN113307375B (en) * 2021-05-26 2022-11-22 天下光捕(武汉)生态科技有限公司 Rotary blue-green algae capturing and reducing device

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