KR20050119854A - Multi media upflow filtering system for nitrification, denitrification and suspended solids removal - Google Patents
Multi media upflow filtering system for nitrification, denitrification and suspended solids removal Download PDFInfo
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- KR20050119854A KR20050119854A KR1020040044982A KR20040044982A KR20050119854A KR 20050119854 A KR20050119854 A KR 20050119854A KR 1020040044982 A KR1020040044982 A KR 1020040044982A KR 20040044982 A KR20040044982 A KR 20040044982A KR 20050119854 A KR20050119854 A KR 20050119854A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
- B01D24/20—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being provided in an open container
- B01D24/26—Upward filtration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/46—Regenerating the filtering material in the filter
- B01D24/4631—Counter-current flushing, e.g. by air
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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Abstract
본 발명은 다층 여재를 이용한 상향류 오,폐수 처리장치에 관한 것으로, 더 상세하게는 크기가 상이한 여재를 다층으로 형성하고, 처리 오,폐수를 그 하부에서 상방향으로 유입 부상시키며 여과 및 질산화, 탈질되게 하는 수처리장지에 관한 것으로서, 하부로부터 오,폐수 유입관(11), 역세공기 산기관(12a), 비중과 직경이 큰 여재(13a)로 이루어진 여재층(T1), 공기 산기관(12b), 비중과 직경이 중간인 여재(13b)로 이루어진 여재층(T2), 비중과 직경이 소형인 여재(13c)로 이루어진 여재층(T3), 스트레이너(14)를 각각 순차적으로 장치하고, 그 상부의 일측에 처리수 유출관(15)이 배관된채 상기 역세공기 산기관(12a)의 하부로 반송배관(16)이 연결되어 있는 것을 특징으로 한다.The present invention relates to an upflow wastewater treatment apparatus using a multilayer filter, and more specifically, to form a filter medium having a different size in a multi-layer, and to raise and raise the treatment wastewater and wastewater upward from the bottom thereof. The method relates to a water treatment plant for denitrification, comprising: a filter layer (T1) consisting of a wastewater inflow pipe (11), a back-air air diffuser (12a), a filter medium (13a) having a specific gravity and a large diameter, and an air diffuser (12b). ), The filter medium layer T2 composed of the median 13b of specific gravity and diameter, the filter media layer T3 composed of the median 13c of specific gravity and diameter, and the strainer 14, respectively, It is characterized in that the conveying pipe 16 is connected to the lower portion of the back-air air diffuser 12a while the treated water outlet pipe 15 is piped to one side of the upper portion.
Description
본 발명은 다층 여재를 이용한 상향류 오,폐수 처리장치에 관한 것으로, 더 상세하게는 크기가 상이한 여재를 다층으로 형성하고, 처리 오,폐수를 그 하부에서 상방향으로 유입 부상시키며 여과 및 질산화, 탈질되게 하는 수처리장지에 관한 것이다.The present invention relates to an upflow wastewater treatment apparatus using a multilayer filter, and more specifically, to form a filter medium having a different size in a multi-layer, and to raise and raise the treatment wastewater and wastewater upward from the bottom thereof. The present invention relates to a water treatment plant for denitrification.
일반적으로 알려진 오,폐수 처리에 있어, 여과장치는 비중이 물보다 큰 여재를 단층 또는 다층으로 이용한 하향류로서, 오,폐수에 함유되어 있는 부유물 및 고형물이 상기 여재의 표면에 부착 억류되어 이로 인하여 여과의 기능이 급속히 저하되는 문제점이 있게된다. In general known wastewater treatment, the filtration device is a downflow using a media having a specific gravity greater than water in a single layer or a multilayer, and suspended solids and solids contained in the wastewater adhere to the surface of the media and thus are detained. There is a problem that the function of the filtration is rapidly deteriorated.
이와 같은 문제점을 해결하기 위한 것으로, 직접 손으로 상기 부유물 및 고형물을 제거하는 공정과 세척물을 역으로 흘려 수압에 의해 여과공이 트이게 하는 수단 등이 동원되고 있으나, 상기 여과 기능이 빈번하게 저하되거나 마비가 되는 경우에 이를 해결하기 위하여, 여과운전이 자주 중단 되거나 역세척수를 빈번하게 사용하므로서, 역세척수의 낭비 등, 경제적 손실의 문제점이 여전하게 된다.In order to solve such a problem, a process of directly removing the suspended solids and solids by hand and a means of circulating the washing by opening the washing water by reverse pressure are mobilized, but the filtration function is frequently deteriorated or paralyzed. In order to solve this problem, the filtration operation is frequently interrupted or the backwash water is frequently used, so problems of economic loss such as waste of the backwash water still exist.
근래에 이르러, 상기 여과장치를 질소제거를 위한 탈질 여과장치로 개선 사용되면서, 미생물의 빠른 탈질 분해로 오,폐수 고형물의 추가적 제거로 수처리에 있어 수요가 많아지고 있다.In recent years, while the filtration device is used as a denitrification filtration device for nitrogen removal, the demand for water treatment is increasing due to the rapid denitrification of microorganisms and the additional removal of waste and solid waste water.
그러나, 이러한 탈질 여과장치는 오,폐수의 하향류로서 탈질시에 발생되는 질소가스( )의 배출방향과 그 흐름이 도 3에 도시된 바와 같이, 대면 상태로서, 질소가스의 탈질 흐름이 오,폐수 흐름으로 방해되어 여재속에 억재되어 고형물과 같은 효과를 나타내어 수두손실을 급격히 증가 시킨다.However, such a denitrification filtration device is a downstream of the wastewater and wastewater, and the nitrogen gas generated during denitrification ( As shown in Figure 3, the discharge direction and the flow of the) as a facing state, the denitrification flow of nitrogen gas is interrupted by the wastewater flow, it is inhibited in the filter medium to have the same effect as a solid to increase the head loss rapidly.
이러한 이유로 하향류식 여과장치의 경우, 여재내에 억류되어 있는 질소가스를 탈기시키기 위한 조작을 자주 실시함으로서 운전이 연속되지 못하고, 상기 탈기를 위한 역세공기 또는 역세수가 증가하는 등의 문제점이 있다.For this reason, in the case of the downflow filtration device, the operation is not performed continuously by degassing nitrogen gas retained in the filter medium, and thus there is a problem such that backwashing air or backwash water for degassing increases.
또한, 이상과 같은 하향류식의 문제점을 해결하기 위한 수단으로, 오, 폐수의 상향류식 여과장치가 있는바, 이는 상향 유속과 압력으로 여재가 팽창하는 현상이 발생하여 여과효율이 떨어지는 문제점이 있고, 이를 보완하기 위한 것으로, 여재를 고정하는 장치를 설치 하였으나, 역세척시에 여재의 팽창을 위하여 상기 여재 고정장치를 일시적으로 풀어야 하는 등의 추가적인 기계장치와 조작을 위한 동력이 필요한 문제점이 있다.In addition, as a means for solving the problems of the downflow as described above, there is an upflow filtration device of the waste water, which has a problem that the filtration efficiency decreases due to the expansion of the media at the upstream flow rate and pressure, In order to compensate for this, an apparatus for fixing the media is installed, but there is a problem in that additional mechanical devices and power for operation such as temporarily releasing the media fixing device for expansion of the media during back washing are required.
상기 상향류식 여과의 경우도 단일 여재로 구성될 경우 여재층 하부에서만 여과가 이루어져 수두손실이 급격하게 발생하기 때문에 잦은 역세척이 필요하다.In the case of the upflow filtration is also composed of a single filter medium, frequent backwashing is necessary because filtration occurs only at the bottom of the filter bed layer so that head loss occurs rapidly.
이러한 문제를 해결하기 위하여, 상향류식 다층 여과장치가 개발(미국특허제6,605,216 B1)되었으나, 비중이 물보다 큰 여재를 사용하기 때문에 상향류에 의한 여재 팽창을 방지하기 위한 장치와 역세척시 여재 팽창을 위한 기계장치가 설치되어 있어 운전이 복잡한 단점이 있을 뿐만 아니라, 단순히 여과를 위한 장치로서, 질산화 및 탈질을 통한 질소제거는 미세의 효과에 불과하다.In order to solve this problem, an upflow multilayer filter was developed (US Pat. No. 6,605,216 B1), but since the media has a specific gravity greater than that of water, an apparatus for preventing media expansion due to upflow and media expansion during backwashing Not only has the disadvantage of complicated operation because it is equipped with a mechanical device, but simply as a device for filtration, nitrogen removal through nitrification and denitrification is only a fine effect.
본 발명은 이상과 같은 문제점을 해결하기 위하여 안출된 것으로서, 본 발명의 목적은 여과지 깊은 곳에서도 여과가 이루어지면서 여과지속시간이 길며, 여과지 깊은 곳에서 다량의 탈질 미생물이 증식되며 탈질이 이루어질 수 있는 다층 여재를 이용한 상향류 오,폐수 처리장치를 제공함에 있다.The present invention has been made in order to solve the above problems, the object of the present invention is that the filtration time is long while the filtration is made deep in the filter paper, a large amount of denitrification microorganism is proliferated in the filter paper can be denitrified The present invention provides an upflow wastewater treatment apparatus using a multilayer filter.
본 발명의 다른 목적은 역세척 운전시 역세수의 하향과 동시에, 여재 하부에서 가압 공기가 분사되어 발생되는 난기류에 의해 여재 표면에 부착 억류된 고형물을 제거할 수 있는 다층 여재를 이용한 상향류 오,폐수 처리장치를 제공함에 있다.Another object of the present invention is an upward flow using a multi-layer filter media capable of removing solids adhered to the filter media surface by turbulence generated by injection of pressurized air from the filter media at the same time as the backwash water is lowered during the backwash operation. To provide a wastewater treatment apparatus.
이상과 같은 목적을 달성하기 위하여, 본 발명은 오,폐수 처리조를 장치함에 있어, 하부로부터 오,폐수 유입관, 역세공기 산기관, 비중과 직경이 큰 여재로 이루어진 여재층, 공기 산기관, 비중과 직경이 중간과 소형인 여재로 이루어진 여재층을 각각 순차적으로 형성하고, 그 위로 스트레이너를 설치하여 이를 통과하며 질산화, 탈질 여과처리 되는 것을 특징으로 한다. In order to achieve the above object, the present invention in the installation of the wastewater treatment tank, from the bottom, wastewater inlet pipe, back-air air diffuser, the filter media layer consisting of a specific gravity and large media, air diffuser, Forming a layer of media consisting of medium and small media of specific gravity and diameter in order, respectively, characterized in that the nitrification, denitrification filtration treatment through this through the installation of a strainer.
이하, 본 발명을 첨부된 도면에 의하여 상세히 설명하면 다음과 같다.Hereinafter, described in detail by the accompanying drawings of the present invention.
도 4은 본 발명의 다층 여재를 이용한 상향류 오,폐수 여과처리를 나타낸 개략 도면이고, 도 5는 본 발명의 역세척 처리상태를 나타낸 도면이며, 도 6a, 6b, 6c는 본 발명에 의한 처리수 성상에 따라 여재층을 각각 다르게 실시한 개략 도면이다.Figure 4 is a schematic diagram showing an upstream wastewater filtration treatment using a multilayer filter of the present invention, Figure 5 is a view showing a backwash treatment state of the present invention, Figure 6a, 6b, 6c is a treatment according to the present invention It is a schematic drawing which carried out the filter media layer differently according to an aqueous phase.
상기 도시된 바와 같이, 오,폐수 처리조(10)를 장치함에 있어, 하부로부터 오,폐수 유입관(11), 역세공기 산기관(12a), 비중과 직경이 큰 여재(13a)로 이루어진 여재층(T1), 공기 산기관(12b), 비중과 직경이 중간인 여재(13b)로 이루어진 여재층(T2), 비중과 직경이 소형인 여재(13c)로 이루어진 여재층(T3), 스트레이너(14)를 각각 순차적으로 장치하고, 그 상부의 일측에 처리수 유출관(15)이 배관된채 상기 역세공기 산기관(12a)의 하부로 반송배관(16)이 연결된 구조로 이루어져 있다.As shown in the figure, in the installation of the wastewater treatment tank 10, the wastewater inflow pipe 11, the back-air air diffuser 12a from the bottom, the filter medium consisting of a specific gravity and a large diameter (13a) The layer T1, the air diffuser 12b, the filter medium layer T2 consisting of the medium specific gravity and the diameter 13b, the filter medium layer T3 consisting of the medium specific gravity and the diameter 13c small diameter, the strainer ( 14) are sequentially arranged, and the treatment pipe 15 is connected to the lower portion of the backwash air diffuser 12a while the treatment water outlet pipe 15 is piped on one side of the upper portion thereof.
한편, 상기 오,폐수 유입관(11)으로 유입되는 처리수의 성상과 공정에 따라 도 6a, 6b, 6c에 도시된 바와 같이, 비중과 직경이 큰 여재(13a)로 이루어진 여재층(T1)과 비중과 직경이 중간인 여재(13b)로 이루어진 여재층(T2)으로 구성할 수도 있고, 비중과 직경이 큰 여재(13a)로 이루어진 여재층(T1)과 비중과 직경이 소형인 여재(13c)로 이루어진 여재층(T3)으로 구성할 수도 있으며, 상기 비중과 직경이 중간인 여재(13b)로 이루어진 여재층(T2)과 비중과 직경이 소형인 여재(13c)로 이루어진 여재층(T3)으로 구성할 수도 있다.On the other hand, as shown in Figures 6a, 6b, 6c according to the properties and processes of the treated water flowing into the wastewater inflow pipe 11, the filter medium layer (T1) consisting of a medium 13a having a specific gravity and a diameter It can also be composed of a filter layer (T2) consisting of a medium (13b) having an excess specific gravity and a diameter, a medium (T1) consisting of a medium (13a) having a specific gravity and a large diameter and a medium having a small specific gravity and a diameter (13c) It may also be composed of a filter layer (T3) consisting of a), the filter layer (T3) consisting of a filter layer (T2) consisting of the filter medium (13b) having the specific gravity and the diameter is medium and the medium (13c) having a small specific gravity and diameter It can also be configured as.
이상과 같은 구조로 이루어진 본 발명의 작용을 설명하면 다음과 같다.Referring to the operation of the present invention made of a structure as described above are as follows.
도 4에서와 같이, 오,폐수는 처리조(10)의 하부에 연결된 유입관(11)을 통하여 상방향으로 부상하게 된다. 이때, 상기 각 여재층(T1),(T2),(T3)는 크기가 각각 다른 여재(13a),(13b),(13c)로 이루어져 아래측 여재층은 큰 여재로, 상부의 여재층은 작은 여재로, 그리고 중간에 설치된 여재층은 중간의 여재로 구성되어 있어, 상기 여재의 크기에 따라 여재의 상호 사이 사이의 통과공이 여재의 크기와 비례 상태로 이루어지게 된다.As shown in Figure 4, the waste water is floated upward through the inlet pipe 11 connected to the lower portion of the treatment tank (10). At this time, the respective media layers (T1), (T2), (T3) is composed of media (13a), (13b), (13c) of different sizes, the lower media layer is a large media, the upper media layer Small media, and the media layer installed in the middle is composed of the media of the middle, so that the through-holes between the media according to the size of the media is made in proportion to the size of the media.
또한, 오, 폐수 성상과 처리공정에 따라서는 도 6a, 6b, 6c에서와 같이, 여재층(T1),(T2)과 여재층(T1),(T3)및 여재층(T2),(T3)의 두 종류 크기 여재로 이루어지게 된다. In addition, depending on the wastewater characteristics and treatment process, as shown in Figs. 6A, 6B, and 6C, the media layers T1, T2, the media layers T1, T3, and media layers T2, T3, ) Is made up of two size media.
따라서, 오,폐수에 함유되어 있는 부유물의 입자들이 상기 각 여재층에 여과 됨에 있어, 큰것, 중간것, 작은것 등으로 자동 구분되며, 각 여재층의 저 표면과 여재 사이 사이에 쌓여 지면서 여과됨과 동시에, 공기 산기관(12b)에서 공급되는 공기와 접촉되는 호기성 미생물에 의해 질산화 및 유기물 산화가 빠르게 이루어지게 되고, 상기 산기관(12b)의 하부 여재층(T1)에서는 공기 공급이 이루어지지 않아 혐기 미생물에 의해 탈질과 여과 기능을 하게 된다. Therefore, the particles of suspended matter contained in the wastewater are filtered into each of the media layers, which are automatically divided into large, medium, and small, and are filtered while stacked between the bottom surface and media of each media layer. At the same time, nitrification and organic material oxidation are rapidly performed by the aerobic microorganism in contact with the air supplied from the air diffuser 12b, and air is not supplied to the lower media layer T1 of the diffuser 12b so that anaerobic The microorganisms are responsible for denitrification and filtration.
이와 같이 운전 처리하다가 과부하 등으로 여과 상태가 불량하여 역세척이 필요할 경우, 오,폐수의 유입관 밸브(도시않됨)를 닫고, 상기 처리수의 배출관(15) 상에 연결된 반송배관(16)의 밸브(도시않됨)를 열어 처리수를 처리조(10)의 하부로부터 부상시키며, 동시에 역세공기의 산기관(12a)을 가동한다.As such, if the filtration is poor due to overload or the like, and the back washing is necessary, the inlet pipe valve (not shown) of the waste water and the waste water are closed, and the return pipe 16 connected to the discharge pipe 15 of the treated water is closed. The valve (not shown) is opened to raise the treated water from the lower part of the treatment tank 10, and at the same time, the diffuser 12a of the backwasher is operated.
상기 산기관을 통한 압축공기는 난류를 이르키며 여재층의 여재를 강제 팽창시킴과 동시에, 그 표면에 부착된 고형물들을 제거하게 된다. 이후, 정상 가동으로 전환하여 사용하면 되는 것이다. Compressed air through the diffuser leads to turbulence, forcibly expands the media of the media layer, and removes solids attached to the surface. Then, it can be used after switching to normal operation.
이상에서 설명된 바와 같이, 본 발명은 여과층의 깊은 곳에서도 여과가 이루어지면서 여과 지속시간이 길고, 여과층의 깊은 곳에서 다량의 미생물이 증식되며, 탈질과 질산화가 이루어질 수 있는 효과가 있고, 역세척 운전시 가압공기의 난기류에 의해 여재 표면에 부착 억류된 고형물을 용이하게 제거할 수 있는 효과가 있다.As described above, the present invention has a long filtration duration as the filtration is made deep in the filtration layer, a large amount of microorganisms are proliferated in the depth of the filtration layer, there is an effect that can be denitrification and nitrification, During backwash operation, there is an effect of easily removing the detained solids attached to the surface of the media by turbulence of pressurized air.
도 1은 종래 단층 하향류식 여과장치의 여과 깊이에 따른 고형물 억류형태를 나타낸 도표. 1 is a diagram showing a solid confinement form according to the filtration depth of the conventional single-bed downflow filtration device.
도 2는 종래 다층 하향류식 여과장치의 여과 깊이에 따른 고형물 억류형태를 나타낸 도표. Figure 2 is a diagram showing the solid detained form according to the filtration depth of the conventional multi-layer downflow filter.
도 3은 종래 단층 및 다층 하향류식 여재내의 질소가스 억류상태를 나타낸 도면. 3 is a view showing a nitrogen gas detention state in the conventional single-layer and multi-layer downflow media.
도 4은 본 발명의 다층 여재를 이용한 상향류 오,폐수 여과처리를 나타낸 개략 도면.Figure 4 is a schematic diagram showing an upstream wastewater wastewater filtration treatment using the multi-layer media of the present invention.
도 5는 본 발명의 역세척 처리상태를 나타낸 도면.5 is a view showing a backwashing process of the present invention.
도 6a, 6b, 6c는 본 발명에 의한 처리수 성상에 따라 여재층을 각각 다르게 실시한 개략 도면.6A, 6B, and 6C are schematic views of differently carrying out media layers according to the properties of treated water according to the present invention.
※ 도면의 주요 부분에 대한 부호의 설명 ※ Explanation of codes for main parts of drawing
10 : 처리조 11 : 유입관10: treatment tank 11: inflow pipe
12a, 12b : 산기관 13a,13b,13c : 여재12a, 12b: diffuser 13a, 13b, 13c: media
14 : 스트레이너 15 : 유출관14: strainer 15: outflow pipe
16 : 반송배관 T1,T2,T3 : 여재층16: return piping T1, T2, T3: media layer
Claims (4)
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| KR1020040044982A KR20050119854A (en) | 2004-06-17 | 2004-06-17 | Multi media upflow filtering system for nitrification, denitrification and suspended solids removal |
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| KR1020040044982A KR20050119854A (en) | 2004-06-17 | 2004-06-17 | Multi media upflow filtering system for nitrification, denitrification and suspended solids removal |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100820581B1 (en) * | 2007-02-28 | 2008-04-08 | (주)이엔바이오21 | Floating media which is more enhanced in the functions of attachment and filtration than traditional floationg media |
| KR100859416B1 (en) * | 2007-07-02 | 2008-09-22 | 경북대학교 산학협력단 | A method and apparatus for treatment of wastewater in upflow biofilter system using circular intermittent aeration |
| KR100927630B1 (en) * | 2008-03-14 | 2009-11-20 | 주식회사 가경코스모 | Bottom-up Biofilm Carrier Filters for Wastewater Treatment |
| CN110156161A (en) * | 2019-06-04 | 2019-08-23 | 北京博汇特环保科技股份有限公司 | The micro- heavy bed biochemical treatment apparatus of one kind and sewage water treatment method |
| EP4159693A4 (en) * | 2020-06-02 | 2023-08-23 | BKT Co., Ltd. | Wastewater filtering method and apparatus comprising filter media of different sizes |
-
2004
- 2004-06-17 KR KR1020040044982A patent/KR20050119854A/en not_active Application Discontinuation
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100820581B1 (en) * | 2007-02-28 | 2008-04-08 | (주)이엔바이오21 | Floating media which is more enhanced in the functions of attachment and filtration than traditional floationg media |
| KR100859416B1 (en) * | 2007-07-02 | 2008-09-22 | 경북대학교 산학협력단 | A method and apparatus for treatment of wastewater in upflow biofilter system using circular intermittent aeration |
| KR100927630B1 (en) * | 2008-03-14 | 2009-11-20 | 주식회사 가경코스모 | Bottom-up Biofilm Carrier Filters for Wastewater Treatment |
| CN110156161A (en) * | 2019-06-04 | 2019-08-23 | 北京博汇特环保科技股份有限公司 | The micro- heavy bed biochemical treatment apparatus of one kind and sewage water treatment method |
| EP4159693A4 (en) * | 2020-06-02 | 2023-08-23 | BKT Co., Ltd. | Wastewater filtering method and apparatus comprising filter media of different sizes |
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