KR20020003807A - Activated sludge treatment facility - Google Patents
Activated sludge treatment facility Download PDFInfo
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- KR20020003807A KR20020003807A KR1020010026464A KR20010026464A KR20020003807A KR 20020003807 A KR20020003807 A KR 20020003807A KR 1020010026464 A KR1020010026464 A KR 1020010026464A KR 20010026464 A KR20010026464 A KR 20010026464A KR 20020003807 A KR20020003807 A KR 20020003807A
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- activated sludge
- sludge treatment
- tank
- flocculant
- treatment tank
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1215—Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/08—Prevention of membrane fouling or of concentration polarisation
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5209—Regulation methods for flocculation or precipitation
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
- C02F3/1273—Submerged membrane bioreactors
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1278—Provisions for mixing or aeration of the mixed liquor
- C02F3/1284—Mixing devices
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/20—Activated sludge processes using diffusers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
Description
본 발명은, 활성오니 처리설비에 관한 것으로서, 보다 상세하게는, 활성오니처리조 내의 여과장치의 여과막의 막힘을 방지하며 활성오니 처리설비를 원활하게 운전할 수 있는 활성오니 처리설비에 관한 것이다.The present invention relates to an activated sludge treatment plant, and more particularly, to an activated sludge treatment plant that prevents clogging of a filtration membrane of a filtration device in an activated sludge treatment tank and can smoothly operate an activated sludge treatment plant.
종래에는, 정밀막 등의 막분리장치나 직포 및 부직포류 등의 여과장치를 구비한 활성오니 처리방식의 활성오니 처리설비가 새롭게 설치된 경우, 그 운전개시에 맞추어 다른 곳에서 다량의 활성오니를 옮겨와서, 다량의 활성오니를 활성오니 처리조에 공급하여 시딩(seeding)처리하고, 해당 활성오니 처리조의 활성오니 농도를 높인 뒤에 운전 개시하였다.Conventionally, when an activated sludge treatment facility of an activated sludge treatment system equipped with a membrane separation device such as a precision membrane or a filtration device such as a woven fabric or a nonwoven fabric is newly installed, a large amount of activated sludge is moved from another place in accordance with the operation start. Then, a large amount of activated sludge was supplied to the activated sludge treatment tank and seeded, and the operation was started after the activated sludge concentration of the activated sludge treatment tank was increased.
이것은 활성오니 처리조 내의 막분리장치나 직포 및 부직포류 등의 여과장치의 여과막의 막힘을 방지하고, 신속하게 오폐수처리를 개시하는 것으로서 상식으로 통용되어 있다.This is commonly used to prevent clogging of the filtration membranes of membrane separators in activated sludge treatment tanks and filtration devices such as woven fabrics and nonwoven fabrics, and to start treatment of wastewater quickly.
한편, 활성오니 처리설비의 처리규모가 클 경우, 운전 개시 전에 다량의 활성오니를 조달해야 하는 문제점이 있다.On the other hand, if the treatment scale of the activated sludge treatment plant is large, there is a problem that a large amount of activated sludge must be procured before the operation starts.
따라서, 종래의 활성오니 처리조에 활성오니를 공급하여 시딩하는 방법 대신에 활성오니 처리조에 미생물과 그 영양분을 운전 개시 전에 투입하고, 활성오니의 생성을 촉진하는 것이 제안되고 있다.Therefore, instead of the method of supplying and seeding activated sludge to a conventional activated sludge treatment tank, it is proposed to introduce microorganisms and their nutrients into the activated sludge treatment tank before the start of operation and to promote the production of activated sludge.
그런데, 활성오니 처리조에 유입되는 오폐수에는 오폐수와 함께 미생물의 영양분이 포함되어 있으므로, 활성오니 처리조 내의 미생물의 영양분은 자연 증가하는 것이 통례이다.By the way, since wastewater flowing into the activated sludge treatment tank contains the nutrients of microorganisms together with the wastewater, it is common practice that the nutrients of the microorganisms in the activated sludge treatment tank naturally increase.
그러므로, 오폐수 유입이 개시되어 있는 상황에서 일부러 미생물의 영양분을 활성오니 처리조에 투입하더라도 활성오니 처리조 내의 활성오니의 생성을 가속화한다 라고는 할 수 없다.Therefore, even if nutrients of microorganisms are deliberately introduced into the activated sludge treatment tank in the situation where wastewater is introduced, it cannot be said that the production of activated sludge in the activated sludge treatment tank is accelerated.
반대로, 활성오니가 충분히 생성되기까지의 동안에 유기물이나 휴지 등의 미세한 부유물질이 가장 먼저 활성오니 처리조로 유입되므로 여과장치의 여과막에 막힘이 야기되고, 더 나아가 활성오니 처리설비를 원활하게 운전할 수 없는 문제점이 있다.On the contrary, the fine sludge, such as organic matter or toilet paper, enters the activated sludge treatment tank first until the activated sludge is sufficiently produced, causing clogging to the filtration membrane of the filtration device. Furthermore, the activated sludge treatment equipment cannot be operated smoothly. There is a problem.
따라서, 본 발명의 목적은, 활성오니 처리설비 내의 시딩작업을 필요로 하지 않고 여과장치의 여과막의 막힘을 방지하며 원활하게 운전할 수 있는 활성오니 처리설비를 제공하는 것이다.Accordingly, it is an object of the present invention to provide an activated sludge treatment plant that can smoothly operate while preventing clogging of the filtration membrane of a filtration device without requiring seeding in the activated sludge treatment plant.
도 1은 본 발명에 따른 활성오니 처리설비의 흐름을 개략적으로 도시한 공정도,1 is a process diagram schematically showing the flow of activated sludge treatment plant according to the present invention,
도 2는 본 발명의 다른 실시예에 따른 활성오니 처리설비의 흐름을 개략적으로 도시한 공정도이다.Figure 2 is a process diagram schematically showing the flow of activated sludge treatment plant according to another embodiment of the present invention.
* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings
11 : 유량조정조 13 : 계량펌프11 flow rate adjusting tank 13 metering pump
15 : 미세목스크린 17 : 탈질조15: fine wood screen 17: denitrification tank
23 : 활성오니 처리조 25 : 산기장치23: activated sludge treatment tank 25: diffuser
27 : 블로워 31 : 여과장치27 blower 31: filter device
35 : 흡인펌프 41 : 반송펌프35 suction pump 41 transfer pump
43 : 응집제 공급장치 45 : 응집제 저장조43: flocculant supply unit 45: flocculant storage tank
47 : 응집제 공급배관 47 : 응집제 공급펌프47: coagulant supply pipe 47: coagulant supply pump
상기 목적을 달성하기 위하여, 본 발명은, 오폐수중의 유기물을 처리하는 활성오니 처리설비에 있어서, 오폐수중의 유기물을 폭기 교반하는 산기장치와, 오폐수중의 유기물 및 부유물질을 여과하는 여과장치를 갖는 활성오니 처리조와; 상기 활성오니 처리조 내의 유기물 및 부유물질을 응집하는 응집제를 공급하는 응집제 공급장치를 포함하는 것을 특징으로 하는 활성오니 처리설비를 제공한다.In order to achieve the above object, the present invention is an active sludge treatment facility for treating organic matter in waste water, the apparatus for aeration and agitating the organic matter in the waste water, and a filtration device for filtering organic matter and suspended solids in the waste water An activated sludge treatment tank having; It provides an activated sludge treatment facility comprising a flocculant supply device for supplying a flocculant to aggregate the organic matter and suspended matter in the activated sludge treatment tank.
여기서, 상기 활성오니 처리조는 유입되는 오폐수를 탈질처리하는 탈질조를 더 포함하고; 상기 활성오니 처리조 내의 오폐수의 일부가 상기 탈질조로 반송하여 상기 탈질조 내의 오폐수와 혼합하여 상기 탈질조 내의 오폐수를 탈질처리하고, 탈질처리된 오폐수를 상기 활성오니 처리조로 이송할 수 있다.Here, the activated sludge treatment tank further includes a denitrification tank for denitrifying the introduced waste water; A portion of the wastewater in the activated sludge treatment tank may be returned to the denitrification tank and mixed with the wastewater in the denitrification tank to denitrify the wastewater in the denitrification tank, and the denitrified wastewater may be transferred to the activated sludge treatment tank.
그리고, 상기 응집제 공급장치는, 상기 응집제를 저장하는 응집제 저장조와,상기 응집제 저장조와 상기 활성오니 처리조를 연결하며 응집제의 유동을 안내하는 응집제 공급배관과, 상기 응집제 공급배관상에 마련되어 상기 응집제 저장조 내의 응집제를 상기 활성오니 처리조로 이송시키는 응집제 공급펌프를 포함하는 것이 바람직하다.The flocculant supply apparatus includes a flocculant storage tank for storing the flocculant, a flocculant supply pipe connecting the flocculant storage tank and the activated sludge treatment tank to guide the flow of the flocculant, and provided on the flocculant supply pipe. It is preferable to include a coagulant supply pump for transferring the coagulant in the activated sludge treatment tank.
또한, 상기 응집제는 상기 활성오니 처리설비의 운전 개시부터 상기 활성오니 처리조 내의 활성오니의 농도가 소정값에 도달할 때까지 공급되는 것이 바람직하고, 상기 활성오니 처리조 내의 활성오니의 농도가 대략 3000 내지 5000mg/l 범위에 도달하면 응집제의 공급을 중단하는 것이 바람직하다.In addition, the flocculant is preferably supplied from the start of operation of the activated sludge treatment plant until the concentration of activated sludge in the activated sludge treatment tank reaches a predetermined value, and the concentration of activated sludge in the activated sludge treatment tank is approximately. It is desirable to stop the supply of flocculant once it reaches the 3000 to 5000 mg / l range.
그리고, 상기 응집제는 유기계응집제와 무기계응집제 중 어느 하나인 것이 바람직하다.The coagulant is preferably any one of an organic coagulant and an inorganic coagulant.
이하에서는 첨부도면을 참조하여 본 발명에 대해 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
설명에 앞서, 여러 실시예에 있어서, 동일한 구성을 가지는 구성요소에 대해서는 동일 부호를 사용하여 대표적으로 본 발명의 일실시예에서 설명하고, 그 외의 실시예에서는 일실시예와 다른 구성에 대해서만 설명하기로 한다.Prior to the description, in various embodiments, components having the same configuration will be representatively described in one embodiment of the present invention using the same reference numerals, and in other embodiments, only the configuration different from the embodiment will be described. Shall be.
도 1은 본 발명에 따른 활성오니 처리설비의 흐름을 개략적으로 도시한 공정도이다. 도시된 바와 같이, 활성오니 처리설비는, 유입되는 오폐수를 저류하는 유량조정조(11)와, 오폐수중의 유기물을 폭기 교반하는 산기장치(25)와 오폐수중의 유기물 및 부유물질을 여과하는 여과장치(31)를 갖는 활성오니 처리조(23)와, 활성오니 처리조(23) 내의 유기물 및 부유물질을 응집하는 응집제를 공급하는 응집제 공급장치(43)를 포함한다. 그리고, 활성오니 처리조(23)는 유입되는 오폐수를 탈질처리하는 탈질조(17)를 더 포함한다. 또한, 활성오니 처리설비는, 유량조정조(11)와 탈질조(17) 사이에 마련되어 탈질조(17)로 유입되는 오폐수의 협잡물을 제거하는 미세목스크린(15)을 더 포함한다.1 is a process diagram schematically showing the flow of activated sludge treatment plant according to the present invention. As shown, the activated sludge treatment plant includes a flow regulating tank 11 for storing incoming wastewater, an air purifier 25 for aeration and stirring organic matter in the wastewater, and a filtration device for filtering organic matter and suspended matter in the wastewater. An activated sludge treatment tank 23 having a 31 and a flocculant supply device 43 for supplying a coagulant for agglomerating organic matter and suspended solids in the activated sludge treatment tank 23 are included. In addition, the activated sludge treatment tank 23 further includes a denitrification tank 17 for denitrifying the introduced wastewater. In addition, the activated sludge treatment facility further includes a fine wood screen 15 provided between the flow rate adjustment tank 11 and the denitrification tank 17 to remove contaminants of the wastewater flowing into the denitrification tank 17.
유량조정조(11) 내에는 탈질조(17)의 수위에 따라 외부로부터 유입된 유량조정조(11) 내의 오폐수를 미세목스크린(15)으로 공급하는 계량펌프(13)가 마련되어 있다.In the flow rate adjustment tank 11, the metering pump 13 which supplies the wastewater in the flow rate adjustment tank 11 which flowed in from the exterior according to the water level of the denitrification tank 17 to the fine wood screen 15 is provided.
미세목스크린(15)으로 유입된 오폐수는 미세목스크린(15)에 의해 협잡물이 제거되어 탈질조(17)로 유입된다.The wastewater introduced into the fine wood screen 15 is removed by the fine wood screen 15 and introduced into the denitrification tank 17.
탈질조(17) 내에서는 미세목스크린(15)을 거쳐 유입된 오폐수와 후술할 활성오니 처리조(23)로부터 반송된 오폐수가 혼합되어 탈질조(17) 내의 오폐수는 탈질처리되고, 탈질처리된 오폐수는 활성오니 처리조(23)로 이동하게 된다.In the denitrification tank 17, the waste water introduced through the fine wood screen 15 and the waste water returned from the activated sludge treatment tank 23 to be described later are mixed, and the waste water in the denitrification tank 17 is denitrified and denitrified. Waste water is moved to the activated sludge treatment tank (23).
활성오니 처리조(23)는 탈질조(17)와 격벽(19)에 의해 구획되며, 격벽(19)의 상단 영역에는 탈질처리된 오폐수가 활성오니 처리조(23) 내로 이동하는 개구(21)가 마련되어 있다.The activated sludge treatment tank 23 is partitioned by a denitrification tank 17 and a partition wall 19, and an opening 21 through which the denitrified wastewater is moved into the activated sludge treatment tank 23 is disposed in an upper region of the partition wall 19. Is provided.
탈질처리된 오폐수가 유입되는 활성오니 처리조(23) 내에는 오폐수중의 유기물을 폭기 교반하는 산기장치(25)와 오폐수중의 유기물 및 부유물질을 여과하는 여과장치(31)가 마련되어 있다.In the activated sludge treatment tank 23 into which the denitrified wastewater is introduced, an acid generator 25 for aeration and stirring organic matter in the wastewater and a filtration device 31 for filtering organic matter and suspended matter in the wastewater are provided.
블로워(27)에 의해 공기 이송배관(29)을 통해 이송된 외부의 공기를 활성오니 처리조(23) 내로 공급하는 산기장치(25)는, 탈질조(17)로부터 유입된 오폐수를 활성오니 처리조(23) 내의 활성오니와 혼합하며 폭기 교반한다. 활성오니처리조(23) 내에 탈질처리된 오폐수를 유입하여 폭기함으로써, 활성오니 처리조(23)는 플록(Floc)화가 촉진되면서 활성오니가 활발히 생성되어 활성오니의 농도가 높아져 질산화조의 역할을 하게 된다. 활성오니 처리조(23)의 활성오니는, 도시되어 있지 않지만 오니이송펌프에 의해 별도의 농축저류조나 침전조로 이송된다.The diffuser device 25 that supplies external air transferred through the air transfer pipe 29 by the blower 27 into the activated sludge treatment tank 23, processes the wastewater introduced from the denitrification tank 17 into the activated sludge treatment. The mixture is mixed with the activated sludge in the tank 23 and aerated stirred. By introducing and aeration of the denitrified wastewater into the activated sludge treatment tank 23, the activated sludge treatment tank 23 promotes floc formation and actively generates activated sludge, thus increasing the concentration of the activated sludge to act as a nitrification tank. do. Although not shown, the activated sludge of the activated sludge treatment tank 23 is transferred to a separate concentrated storage tank or a sedimentation tank by a sludge transfer pump.
그리고, 여과장치(31)로서 정밀한 여과막을 갖는 막분리장치가 마련되며, 여과장치(31)는 활성오니 처리조(23) 내에 침지 설치되고, 그 상부영역에 여과 처리된 여과수를 집수하는 집수관(33)이 마련되어 있다. 집수관(33)에 집수된 여과수는 흡인펌프(35)에 의해 토출되어 소독조(미도시)를 거쳐 외부로 방류된다. 흡인펌프(35)의 흡입측에는 흡입측의 압력을 측정하는 부압계(37)가 마련되고, 토출측에는 여과수의 배출량을 일정하게 하는 정유량밸브(39)가 마련되어 있다.As the filtration device 31, a membrane separation device having a precise filtration membrane is provided, and the filtration device 31 is immersed in the activated sludge treatment tank 23, and the water collecting pipe collecting the filtered water in the upper region thereof. 33 is provided. The filtered water collected in the collection pipe 33 is discharged by the suction pump 35 and discharged to the outside through a disinfection tank (not shown). On the suction side of the suction pump 35, a negative pressure gauge 37 for measuring the pressure on the suction side is provided, and a constant flow valve 39 is provided on the discharge side to keep the discharge of the filtered water constant.
또한, 활성오니 처리조(23) 내에는 활성오니 처리조(23) 내의 오폐수의 일부를 탈질조(17)로 반송하는 반송펌프(41)가 마련되어 있다.Further, in the activated sludge treatment tank 23, a conveying pump 41 for conveying a part of the waste water in the activated sludge treatment tank 23 to the denitrification tank 17 is provided.
한편, 활성오니 처리조(23) 내로 응집제를 공급하는 응집제 공급장치(43)는, 응집제를 저장하는 응집제 저장조(45)와, 응집제 저장조(45)와 활성오니 처리조(23)를 연결하며 응집제의 유동을 안내하는 응집제 공급배관(47)과, 응집제 공급배관(47)상에 마련되어 응집제 저장조(45) 내의 응집제를 활성오니 처리조(23)로 이송시키는 응집제 공급펌프(49)를 갖는다. 응집제 공급장치(43)는 활성오니 처리설비의 운전 개시부터 활성오니 처리조(23) 내의 활성오니의 농도가 소정값에 도달할 때까지 응집제를 활성오니 처리조(23)에 공급한다. 이로써, 활성오니 처리조(23)에 유입되는 유기물이나 휴지 등과 같은 미세한 부유물질이 응집제에 의해 응집처리되어 여과장치(31)의 여과막의 막힘을 방지할 뿐만 아니라 활성오니 처리조(23) 내의 활성오니의 생성을 촉진하게 된다. 여기서, 응집제는 활성오니 처리조(23) 내의 활성오니의 농도가 대략 3000 내지 5000mg/l 범위에 도달할 때까지 공급되는 것이 바람직하다. 그리고, 응집제로서 유기계 고분자응집제인 양이온(Cation)성 응집제 및 음이온(Anion)과 무기계응집제인 폴리염화알루미늄, 염화제2철, 황산제1철, 황산제2철, 황산알루미늄 중 어느 하나를 처리하고자 하는 오폐수의 수질을 고려하여 사용하는 것이 바람직하다.On the other hand, the flocculant supply apparatus 43 which supplies a flocculant into the activated sludge treatment tank 23 connects the flocculant storage tank 45 which stores a flocculant with the flocculant storage tank 45 and the activated sludge treatment tank 23, and is a flocculant. A coagulant supply pipe 47 for guiding the flow of water and a coagulant supply pump 49 provided on the coagulant supply pipe 47 to transfer the coagulant in the coagulant storage tank 45 to the activated sludge treatment tank 23. The flocculant supply device 43 supplies the flocculant to the activated sludge treatment tank 23 until the concentration of the activated sludge in the activated sludge treatment tank 23 reaches a predetermined value from the start of operation of the activated sludge treatment facility. As a result, fine suspended matter such as organic matter or tissues flowing into the activated sludge treatment tank 23 is agglomerated by a coagulant to prevent clogging of the filtration membrane of the filtration device 31, as well as activation in the activated sludge treatment tank 23. Promotes the production of sludge. Here, the flocculant is preferably supplied until the concentration of the activated sludge in the activated sludge treatment tank 23 reaches approximately 3000 to 5000 mg / l. And, to treat any one of the organic coagulant (cation) flocculant and anion and the inorganic coagulant polyaluminum chloride, ferric chloride, ferrous sulfate, ferric sulfate, aluminum sulfate as flocculant It is preferable to use considering the water quality of waste water.
이러한 구성에 의해, 본 발명의 일실시예에 따른 활성오니 처리설비의 흐름을 설명하면 다음과 같다.With this configuration, the flow of the activated sludge treatment plant according to the embodiment of the present invention will be described.
활성오니 처리설비의 운전이 개시되면, 활성오니 처리조(23)에 응집제를 공급한다. 탈질조(17)의 수위에 따라 유량조정조(11) 내의 계량펌프(13)를 작동하여 유량조정조(11) 내로 유입된 오폐수를 미세목스크린(15)으로 이송한다. 미세목스크린(15)에서 협잡물이 제거된 오폐수는 탈질조(17)로 보내진다.When the operation of the activated sludge treatment plant is started, a flocculant is supplied to the activated sludge treatment tank 23. According to the level of the denitrification tank 17, the metering pump 13 in the flow regulating tank 11 is operated to transfer the wastewater introduced into the flow regulating tank 11 to the fine wood screen 15. Waste water from which fines are removed from the fine wood screen 15 is sent to the denitrification tank 17.
탈질조(17)에서는 미세목스크린(15)을 거쳐 유입된 오폐수와 활성오니 처리조(23) 내의 반송펌프(41)에 의해 탈질조(17)로 반송된 오폐수를 혼합하여 탈질처리하고, 탈질처리된 오폐수는 탈질조(17)와 활성오니 처리조(23) 사이에 마련된 격벽(19)의 개구(21)를 통해 활성오니 처리조(23)로 이동한다.In the denitrification tank 17, denitrification is performed by mixing waste water introduced through the fine wood screen 15 and waste water returned to the denitrification tank 17 by the transfer pump 41 in the activated sludge treatment tank 23, and denitrification. The treated waste water moves to the activated sludge treatment tank 23 through the opening 21 of the partition wall 19 provided between the denitrification tank 17 and the activated sludge treatment tank 23.
활성오니 처리조(23)로 유입하는 탈질처리된 오폐수는 산기장치(25)에 의해 활성오니 처리조(23) 내의 활성오니와 혼합하여 폭기 교반된다. 그리고, 폭기 교반된 오폐수는 여과장치(31)를 거쳐 흡인펌프(35)에 의해 토출되어 소독조를 거쳐 외부로 방류된다.The denitrified wastewater flowing into the activated sludge treatment tank 23 is mixed with the activated sludge in the activated sludge treatment tank 23 by the aeration apparatus 25, and then aerated and agitated. The aerated and agitated wastewater is discharged by the suction pump 35 through the filtration device 31 and discharged to the outside through a sterilization tank.
한편, 활성오니 처리설비를 운전 개시할 때 응집제를 활성오니 처리조(23)에 공급함으로써, 활성오니 처리조(23)에 유입되는 유기물이나 휴지 등과 같은 미세한 부유물질이 응집제에 의해 응집처리되어, 여과장치(31)의 여과막의 막힘을 방지할 뿐만 아니라 활성오니 처리조(23) 내의 활성오니의 생성을 촉진하게 된다.On the other hand, when the activated sludge treatment plant starts to operate, a flocculant is supplied to the activated sludge treatment tank 23, whereby fine suspended substances such as organic matter and tissues flowing into the activated sludge treatment tank 23 are coagulated by the flocculating agent, It not only prevents the filtration membrane of the filtration device 31 but also promotes the generation of the activated sludge in the activated sludge treatment tank 23.
또한, 활성오니 처리조(23) 내에 계속하여 유입하는 오폐수에 포함된 오니도 산기장치(25)에 의한 폭기 교반작용에 의해 응집처리를 진행하면서, 유기물 분해를 위한 호기성 미생물의 발생과 증식에 의한 플록화가 촉진되면서 활성오니의 생성이 촉진되어, 시간이 경과함에 따라 활성오니 처리조(23) 내의 활성오니 농도가 서서히 상승한다. 이로써, 활성오니의 공급에 의한 활성오니 처리조(23)의 시딩작업이 필요하지 않게 된다.In addition, the flocculation process is carried out by the aeration agitation action by the onido acidic device 25 included in the wastewater continuously introduced into the activated sludge treatment tank 23, and the aerobic microorganisms for the decomposition of organic matter are generated and proliferated. As flocking is promoted, the production of activated sludge is promoted, and the concentration of activated sludge in the activated sludge treatment tank 23 gradually increases with time. Thereby, the seeding operation of the activated sludge treatment tank 23 by supply of activated sludge is unnecessary.
그리고, 활성오니 처리조(23) 내의 활성오니 농도가 대략 3000 내지 5000mg/l 범위에 도달하면 활성오니 처리조(23) 내로 응집제의 공급을 중지한다. 이후에는, 계속해서 유입하는 오폐수에 의해 활성오니 처리조(23) 내의 활성오니 농도는 높아지고 플록화가 촉진되면서 활성오니 처리가 활발히 촉진되어 활성오니 처리조(23)는 질산화된다.When the concentration of activated sludge in the activated sludge treatment tank 23 reaches approximately 3000 to 5000 mg / l, the supply of flocculant to the activated sludge treatment tank 23 is stopped. Subsequently, the activated sludge concentration in the activated sludge treatment tank 23 is increased by the wastewater flowing in continuously, and the flocculation is promoted, and the activated sludge treatment is actively promoted, so that the activated sludge treatment tank 23 is nitrified.
한편, 도 2는 본 발명의 다른 실시예에 따른 활성오니 처리설비의 흐름을 개략적으로 도시한 공정도이다. 도시된 바와 같이, 본 발명의 다른 실시예에 따른 활성오니 처리설비는, 본 발명의 일실시예와는 달리, 탈질조 및 반송펌프가 없는구성을 가진다. 기타 구성은, 상기 본 발명의 일실시예와 동일한 구성을 가지므로 그 상세한 설명은 생략하기로 한다.On the other hand, Figure 2 is a process diagram schematically showing the flow of the activated sludge treatment plant according to another embodiment of the present invention. As shown, the activated sludge treatment plant according to another embodiment of the present invention, unlike one embodiment of the present invention, has a configuration without a denitrification tank and a transfer pump. Since other configurations have the same configuration as the embodiment of the present invention, a detailed description thereof will be omitted.
이로써, 본 발명의 다른 실시예에 따른 활성오니 처리설비는, 유량조정조(11)로 유입된 오폐수가 미세목스크린(15)을 거쳐 활성오니 처리조(23)로 유입되어 활성오니 처리조(23)에서 응집처리됨과 동시에 폭기 교반되고, 여과장치(31)를 거쳐 외부로 방류된다.Thus, in the activated sludge treatment plant according to another embodiment of the present invention, the wastewater introduced into the flow regulating tank 11 is introduced into the activated sludge treatment tank 23 through the fine wood screen 15 and is activated sludge treatment tank 23. Agglomerated and aerated at the same time, and discharged to the outside via the filtration device (31).
이와 같이, 활성오니 처리설비의 운전 개시부터 활성오니 처리조 내로 응집제를 공급함으로써, 활성오니 처리조의 활성오니 농도를 높이기 위해 별도의 시딩작업을 필요로 하지 않을 뿐만 아니라 활성오니 처리조에 유입된 유기물이나 휴지 등과 같은 미세한 부유물질이 응집제에 의해 응집처리되어 여과장치의 여과막은 유기물이나 미세한 부유물질에 의한 막힘이 방지되며, 활성오니 처리설비를 원활하게 운전할 수 있게 된다.As such, by supplying a flocculant into the activated sludge treatment tank from the start of the operation of the activated sludge treatment plant, not only a separate seeding work is required to increase the concentration of the activated sludge in the activated sludge treatment tank, The fine suspended solids such as tissues are agglomerated by the coagulant, so that the filtration membrane of the filtration device is prevented from being blocked by organic matter or fine suspended solids, and the activated sludge treatment equipment can be operated smoothly.
전술한 실시예들에서는, 여과장치로서 정밀한 여과막을 갖는 막분리장치에 대해 설명하였지만, 벌집형상이나 격자형상 등의 각형 틀에 부직포나 직포 등에 의해 형성된 자루로 설치되는 여과막을 갖는 여과장치를 활성오니 처리조 내에 마련하고, 활성오니 처리설비를 운전 개시할 때 활성오니 처리조 내에 응집제를 공급하는 것으로 활성오니 처리조에 유입되는 유기물이나 부유물질에 대한 응집처리가 이루어져, 여과장치의 여과막의 막힘을 방지할 수 있음은 두말할 여지가 없다.In the above-described embodiments, a membrane separation device having a precise filtration membrane has been described as a filtration device. However, a filtration device having a filtration membrane installed in a bag formed by a nonwoven fabric or a woven fabric in a rectangular frame such as a honeycomb shape or a lattice shape is activated. It is provided in the treatment tank and supplying the flocculant into the activated sludge treatment tank when the activated sludge treatment equipment starts to operate, thereby coagulating the organic matter and suspended matter flowing into the activated sludge treatment tank, thereby preventing the clogging of the filtration membrane of the filtration device. Needless to say, it can be done.
이상 설명한 바와 같이, 본 발명에 따르면, 활성오니 처리설비의 운전 개시부터 유기물 및 부유물질을 응집하는 응집제를 활성오니 처리조 내로 공급함으로써, 활성오니 처리조의 시딩작업을 필요로 하지 않고 여과장치의 여과막의 막힘을 방지하며 원활하게 운전할 수 있는 활성오니 처리설비가 제공된다.As described above, according to the present invention, by supplying a flocculant that aggregates organic matter and suspended solids from the start of operation of the activated sludge treatment plant into the activated sludge treatment tank, the seeding operation of the activated sludge treatment tank is not required, Active sludge treatment facilities are provided to prevent clogging and to operate smoothly.
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- 2001-05-15 KR KR1020010026464A patent/KR20020003807A/en not_active Application Discontinuation
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02298398A (en) * | 1989-05-10 | 1990-12-10 | Kubota Corp | Sewage treatment apparatus |
| JPH07232196A (en) * | 1994-02-23 | 1995-09-05 | Kubota Corp | Advanced treatment of water and its device |
| JPH08332483A (en) * | 1995-06-06 | 1996-12-17 | Inax Corp | Treatment of waste water |
| JPH0938680A (en) * | 1995-07-28 | 1997-02-10 | Dia Furotsuku Kk | Treatment of waste water |
| KR19980083279A (en) * | 1997-05-13 | 1998-12-05 | 문상목 | Treatment method of high concentration organic wastewater and nutrients using immersion type microfiltration membrane-activated sludge process |
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| Publication number | Publication date |
|---|---|
| JP2002018466A (en) | 2002-01-22 |
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