KR20030097075A - Hybrid Submerged Plate Type Membrane Bioreactor Using microfilter Combined With Biofilm-Activated Carbon for Advanced Treatment of Sewage and Wastewater - Google Patents

Hybrid Submerged Plate Type Membrane Bioreactor Using microfilter Combined With Biofilm-Activated Carbon for Advanced Treatment of Sewage and Wastewater Download PDF

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KR20030097075A
KR20030097075A KR1020020034228A KR20020034228A KR20030097075A KR 20030097075 A KR20030097075 A KR 20030097075A KR 1020020034228 A KR1020020034228 A KR 1020020034228A KR 20020034228 A KR20020034228 A KR 20020034228A KR 20030097075 A KR20030097075 A KR 20030097075A
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activated carbon
biofilm
aeration
wastewater
tank
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KR1020020034228A
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Korean (ko)
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윤용수
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정병욱
윤용수
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24Feed or discharge mechanisms for settling tanks
    • B01D21/245Discharge mechanisms for the sediments
    • B01D21/2461Positive-displacement pumps; Screw feeders; Trough conveyors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/18Construction of the scrapers or the driving mechanisms for settling tanks
    • B01D21/20Driving mechanisms
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

PURPOSE: Provided is an advanced wastewater treatment apparatus being capable of effectively removing nitrogen by using a reaction zone which is divided by a baffle to an anoxic zone and an aeration zone into which activated carbon coated with biofilm is introduced to decompose dissolved organic material and a plate type microfilter module is submerged to remove suspended solids, thereby highly purifying wastewater to be reused. CONSTITUTION: The apparatus comprises a reaction tank (A) divided by a baffle(13) into an anoxic zone(4) to perform intermittent aeration and denitrifying and an aeration zone(6) to remove organic material and nitrogen by organic material adsorption to the activated carbon, biological decomposition of organic material and nitrogen by microorganisms in the biofilm, wherein the anoxic zone(4) includes an agitator(5) and a diffuser(9') and the aeration zone(6) includes a diffuser(9), a microfilter module(7) which separates activated sludge and treated water, and activated carbon(8) on which biofilm is formed.

Description

생물막활성탄과 마이크로필터모듈을 이용한 오·폐수 고도처리장치 {Hybrid Submerged Plate Type Membrane Bioreactor Using microfilter Combined With Biofilm-Activated Carbon for Advanced Treatment of Sewage and Wastewater}Hybrid Submerged Plate Type Membrane Bioreactor Using microfilter Combined With Biofilm-Activated Carbon for Advanced Treatment of Sewage and Wastewater}

본 발명은 생물막활성탄의 생물학적 처리와 침지형 막분리의 물리적 처리가 연계된 새로운 공정으로써 도 1과 같이 폭기조에 활성탄을 투입하여 활성탄이 갖고 있는 흡착력과 활성탄 표면에 부착·형성된 미생물막에 의해 오·폐수 중 용존유기물질을 처리하고, 폭기조내에 침지되어 있는 마이크로필터 모듈(module)에 의하여 부유물질을 효율적으로 제거함으로써 중수도로 이용 가능한 양질의 처리수를 얻을 수 있는 생물막활성탄과 마이크로필터 모듈을 이용한 오·폐수 고도처리장치이다.The present invention is a new process in which biological treatment of biofilm activated carbon and physical treatment of immersed membrane separation is connected to the aeration tank as shown in FIG. Bio-membrane activated carbon and micro-filter module can be used to treat heavy dissolved organic matter and to efficiently remove suspended solids by micro filter module immersed in aeration tank. Wastewater advanced treatment device.

기존의 생물학적 처리시설은 활성슬러지조 내의 오·폐수를 폭기시켜 미생물을 활성화시킨 다음, 활성화된 미생물이 유입수에 포함되어 있는 유기성 오염물질을 섭취·성장하여 자기소화작용에 의해 분해되도록 하고, 다음 공정의 침전지를 통해 미생물 덩어리와 상등수를 분리하고 상등수는 처리수조에서 일시적으로 저장되었다가 소독조에서 최종적으로 소독된 다음 방류시키는 공정으로 구성되어 있다.Existing biological treatment facilities activate microorganisms by aeration of wastewater in activated sludge tanks, and then activated microorganisms ingest and grow organic pollutants contained in influent water to be decomposed by self-extinguishing. The microbial mass and the supernatant are separated through the sedimentation basin, and the supernatant is temporarily stored in the treatment tank, finally disinfected in the disinfection tank, and then discharged.

그러나 이러한 종래의 생물학적 처리시설은 미생물에 의한 활성슬러지조로 이루어져 있기 때문에 유기성 오염물질의 완전 제거가 어렵고 고농도의 질소·인 등의 영양염류를 처리하지 못하는 문제가 있었다.However, such a conventional biological treatment facility has a problem that it is difficult to completely remove organic contaminants and to treat nutrients such as nitrogen and phosphorus because it is composed of activated sludge tank by microorganisms.

또한, 종래의 고정상 접촉여재에 의한 처리는 각종 오·폐수 처리공법 중 접촉포기법의 일종으로 접촉여재에 미생물막을 형성시켜 미생물과 유입수의 접촉에 의해 오염물질을 생물화학적으로 산화분해시키는 공정으로서, 비교적 긴 체류시간을 요함으로 소요면적이 넓고, 유입수 부하량에 따라 처리효율이 급감하여 유지관리면에서 많은 어려움이 있다.In addition, the conventional treatment by the fixed-phase contact medium is a kind of contact aeration method among various wastewater treatment methods, which forms a microbial membrane on the contact medium and biochemically oxidizes contaminants by contact between the microorganisms and the influent. It requires a relatively long residence time, so the required area is large, and the treatment efficiency decreases rapidly according to the influent load.

최근에는 활성슬러지조에 분리막을 조합시킨 고농도의 유기성 폐수처리 공정은 여러가지 잇점을 가지고 있어 중수도, 분뇨 등의 처리에 일부 이용되고 있지만, 이들 처리장치들은 대부분 관형(tubular type) 또는 중공사막(hollow fiber)형의 한외여과막(ultrafiltration)을 사용한 교차흐름 형태(cross flow type)를 기본으로 하는 장치구성들이다. 그러나 이러한 공정들은 여과막 이외에 순환여과를 위한 투과수량의 5 내지 10 배 이상의 순환펌프 및 배관 등이 추가로 더 필요하고, 정기적인 막세정 작업을 필요로 하므로 인건비 및 약품비가 많이 소요될 뿐만 아니라, 높은 운전압력을 유지하기 위한 전기료 등 운전비용이 많이 소요된다는 문제점이 있었다.Recently, the high concentration organic wastewater treatment process that combines membranes with activated sludge tanks has several advantages, and some of them are used for the treatment of heavy water and manure, but most of these treatment devices are tubular or hollow fiber membranes. Types of device configurations based on cross flow type using ultrafiltration. However, these processes require more than 5 to 10 times more circulation pumps and pipes than the filtration membranes, and require regular membrane cleaning operations, resulting in high labor and chemical costs, as well as high operation. There was a problem that a lot of operating costs such as electricity costs to maintain the pressure.

본 발명은 상기 문제점들을 해소하고 보다 효율적이고 경제적인 오·폐수 처리를 위하여 하나의 처리반응조에 배플(baffle)을 설치함으로 한쪽은 무산소조로 만들고, 다른 한쪽은 평판형 마이크로필터로 이루어진 마이크로필터 모듈을 침지설치한 폭기조로 분할한 다음, 폭기조내에 활성탄을 투입하여 활성탄이 갖고 있는 흡착력과 활성탄 표면에 부착·형성된 미생물막에 의한 오·폐수 중 용존유기물질을처리하게 하고, 폭기조내에 침지되어 있는 평판형 마이크로필터에 의해 부유물질을 효율적으로 제거함으로써 중수도로 이용 가능한 양질의 처리수를 얻도록 한 공정으로써, 처리반응조를 무산소조와 폭기조로 양분 설치·운전함으로써 폭기조로부터 반송된 오·폐수 중의 아질산성 질소와 질산성 질소를 탈질균에 의해 질소 가스로 환원 처리함으로서 질소를 효율적으로 처리할 수 있는 오·폐수 고도처리장치를 제공하도록 한 것이다.The present invention solves the above problems and installs a baffle in one treatment reaction tank for more efficient and economical wastewater treatment, one side is made of anoxic tank, and the other is a microfilter module consisting of a flat type microfilter. After dividing into the aeration tank, the activated carbon is introduced into the aeration tank to treat the adsorptive power possessed by the activated carbon and the dissolved organic matter in the waste water by the microbial membrane attached and formed on the surface of the activated carbon. It is a process to efficiently remove suspended solids by a micro filter to obtain high quality treated water that can be used as a heavy water.The process reaction tank is installed in an oxygen-free tank and an aeration tank for nutrients and nitrite nitrogen in the waste water returned from the aeration tank. Nitrate nitrogen is reduced to nitrogen gas by denitrification bacteria. It is to provide an advanced wastewater treatment system that can efficiently treat nitrogen.

도 1은 본 발명에 따른 생물막활성탄과 마이크로필터모듈을 연계한 오·폐수처리 실시 예를 나타낸 공정단면도1 is a process cross-sectional view showing an embodiment of wastewater treatment in connection with a biofilm activated carbon and a microfilter module according to the present invention.

도 2는 본 발명에 있어 폭기조내에 첨가시켜 형성된 생물막활성탄의 확대단면도Figure 2 is an enlarged cross-sectional view of the biofilm activated carbon formed by adding in the aeration tank in the present invention

도 3은 본 발명에 있어 폭기조내에 침지 설치된 마이크로필터 모듈의 일부 확대 평면도Figure 3 is an enlarged plan view of a part of the micro filter module immersed in the aeration tank in the present invention

도면의 중요부분에 대한 부호의 설명Explanation of symbols for important parts of the drawings

1 : 스크린 2 : 유량조정조 3 : 공급펌프1 screen 2 flow adjustment tank 3 supply pump

4 : 무산소조 5 : 교반기 6 : 폭기조4: anoxic tank 5: agitator 6: aeration tank

7 : 마이크로필터모듈 7a : 평판형 마이크로필터 8 : 활성탄7 micro filter module 7a flat plate type micro filter 8 activated carbon

8a : 생물막 9,9′: 산기관 10 : 반송펌프8a: biofilm 9,9 ′: diffuser 10: return pump

11 : 송풍기 12 : 처리수조 13 : 배풀11: blower 12: treatment tank 13: double pool

14 : 이수관 A : 처리반응조14: water pipe A: treatment reaction tank

본 발명의 장치구성을 도면에 따라 상세하게 설명하면 다음과 같다.Referring to the device configuration of the present invention in detail as follows.

본 발명은 유입 오·폐수 중의 입자가 큰 부유물질 등을 여과하는 스크린(1)과 여과처리된 유입수의 오염농도와 유량을 조정하게 된 유량조정조(2), 그리고 처리반응조(A)를 배플(baffle)(13)에 의해 무산소조(4)와 폭기조(6)로 분리하여 이수관(14)으로 연결하였다. 무산소조(4)에 유입된 유입수를 하부에 설치시킨 산기관(9′)을 통하여 간헐폭기운전을 하게 함으로써 폭기시에는 질산화를, 비폭기시에는 유입수 탄소원을 이용한 탈질화를 유도하도록 하였으며, 무산소조(4)에서 이수관(14)에 의하여 폭기조(6)로 이수되는 유입수는 흡착작용과 미생물막이 형성된 생물막활성탄(8)과 0.4㎛의 평판 마이크로필터(7a)로 구성된 마이크로필터 모듈(7)이 침지된 폭기조(6)로 유입시켜 유기물 제거 및 질산화를 도모하고 여과막에 의해 배출된 최종처리수를 중수도로 이용가능한 양질의 처리수를 처리수조(12)로 분리시키도록 한 구성이다.The present invention provides a screen (1) for filtering suspended solids and the like in influent wastewater, a flow adjusting tank (2) for adjusting the pollution concentration and the flow rate of the filtered influent, and a treatment reaction tank (A). Baffle) (13) was separated into an anaerobic tank (4) and aeration tank (6) and connected to a water pipe (14). Intermittent aeration operation was carried out through an acid pipe (9 ') installed at the bottom of the inflow water flowing into the anaerobic tank (4) to induce nitrification during aeration and denitrification using an influent carbon source during aeration. Inflow water taken from the aeration pipe 14 to the aeration tank 6 in the a) is an aeration tank in which the microfilter module 7 composed of a biofilm activated carbon 8 having an adsorption action and a microbial membrane and a flat microfilter 7a of 0.4 μm is immersed. (6) to facilitate removal of organic matter and nitrification, and to separate the treated water of the high quality treated water available as heavy water into the treated water tank 12 by the final treated water discharged by the filtration membrane.

또한 본 발명은 폭기조(6)내에 생물막(8a)을 이루는 활성탄(8)이 적정량으로 내장될 뿐만 아니라 마이크로필터모듈(7) 하부에 산기관(9)을 설치하여 송풍기(11)로부터 외부공기를 유입되어 폭기작용을 하도록 구성하였다.In addition, according to the present invention, the activated carbon 8 constituting the biofilm 8a in the aeration tank 6 is not only embedded in an appropriate amount, but also the diffuser 9 is installed in the lower part of the micro filter module 7 so that the outside air is blown from the blower 11. Inlet was configured to aeration.

이러한 본 발명은 도 1에서 미세목을 이루는 스크린(1)으로서 오·폐수 중의 협잡물이나 고형물들이 유입되지 않도록 사전에 제거해 주는 역할을 하며, 난분해성 고형물질, 털 등에 의한 펌프나 막 등의 손상을 방지하게 된다. 또 유량조정조(2)에서는 유입수의 오염농도와 유량을 조정하여 무산소조(4)로 공급함으로서 최적의 처리효율을 얻을 수 있도록 한다.The present invention is a screen (1) constituting the fine wood in Figure 1 serves to remove in advance to prevent the inflow of contaminants or solids in the waste water, waste water, and to damage the pump or membrane due to hardly decomposable solid material, hair, etc. Will be prevented. In addition, the flow rate adjusting tank 2 adjusts the contaminant concentration and the flow rate of the inflow water and supplies it to the anoxic tank 4 so as to obtain an optimum treatment efficiency.

오·폐수의 공급펌프(3)는 유량조정조(2)의 오·폐수를 주처리 공정인 무산소조(4)로 이송시켜주는 역할을 하게 된다. 무산소조(4)는 공급펌프(3)에 의해 유입된 유입수를 송풍기(11)에 의하여 산기관(9′)에서 공기를 유입시켜 간헐 폭기운전함으로써 폭기시에는 질산화를 비폭기시에는 유입수 탄소원을 이용한 탈질화를 유도하여 질소제거효율을 높일 수 있도록 구성되었다.The wastewater supply pump 3 serves to transfer the wastewater of the flow regulating tank 2 to the anoxic tank 4 which is a main treatment process. The oxygen-free tank 4 introduces the inflow water introduced by the supply pump 3 from the diffuser 11 into the air from the diffuser 9 'and intermittently aerators, thereby nitrifying nitrogen during aeration and denitrification using an influent carbon source during aeration. It is configured to increase the nitrogen removal efficiency by inducing fire.

또한 원할한 무산소 조건을 위하여 교반기(5)를 설치하여 원활히 교반하여 미생물 농도를 균등하게 유지하게 하였다. 또 유입 오·폐수내의 암모니아와 유기성 질소가 질산화미생물에 의해 아질산성 질소와 질산성 질소로 변화되는 질산화(nitrification)와 질산성 질소가 환원되어 대기 중에 질소가스로 배출되는 탈질 (denitrification)에 의한 질소제거를 유도하도록 하였다.In addition, the stirrer 5 was installed for smooth anoxic conditions so that the microorganism concentration was uniformly maintained. In addition, nitrogen from denitrification, in which ammonia and organic nitrogen in influent wastewater are converted to nitrite and nitrate nitrogen by the nitrification microorganisms, and nitric acid is reduced and discharged to the nitrogen gas into the atmosphere. Removal was induced.

무산소조(4)에서 처리된 처리수는 흡착작용과 미생물막이 형성된 생물막(8a) 활성탄(8)과 0.4㎛의 마이크로필터(7a)로 구성된 마이크로필터 모듈(7)이 침지된폭기조(6)로 유입되며, 막유니트는 산기관(9)과 마이크로필터모듈(7)을 일체형으로 제작하여 송풍기(11)를 이용하여 공기를 막유니트 하단에 설치된 산기관(9)으로 공급하여 막세정과 산소공급을 동시에 이루고, 간헐흡인의 조건으로 처리수를 배출함으로 막표면 오염인자를 효과적으로 제거하여 막오염을 최소화하게 된다. 또한 본 발명의 마이크로필터모듈(7)은 중공사막형이나 관형의 정밀여고막보다 저렴하고 기존 분리막에 비해 투과량을 대폭 향상시킬 수 있으며, 협잡물에 의한 영향이 적어 전처리가 비교적 간단하고 고압수나 브러쉬에 의한 간편한 세정도 가능하므로 이용가치가 크다. 처리반응조(A)의 배풀(B)로 분리된 폭기조(6)에 분말활성탄을 첨가하여 활성탄에 의한 저분자 유기물질의 흡착과 활성탄(8) 표면에 형성된 미생물막 (8a)에 의한 생분해 과정이 이루어지며, 생물막활성탄의 상향류에 의한 막표면 세정 효과를 동시에 기대할 수 있다. 또한 도 2에서 볼 수 있듯이 암모니아성 질소 및 유기성 질소를 함유하는 생물학적 처리방법에 있어 외부 표면에 공극이 형성된 활성탄(8)을 다공성 담체로 이용해서 질산화 미생물이 담체 표면에 공극내부로 이동하여 생물막(8a)을 형성할 수 있도록 하며, 용존산소의 조절을 통해 외부에서의 질산화, 내부에서의 탈질화 작용이 이루어져 무산소조(4)에서의 미처리된 질소를 완전제거 하도록 한다.The treated water treated in the anoxic tank 4 flows into the aeration tank 6 in which the microfilter module 7 composed of the biofilm 8a, the activated carbon 8, on which the adsorption action and the microbial film are formed, and the microfilter 7a of 0.4 µm is immersed. In the membrane unit, the diffuser (9) and the micro filter module (7) are manufactured in one piece, and the air is supplied to the diffuser (9) installed at the bottom of the membrane unit by using the blower (11) to provide membrane cleaning and oxygen supply. At the same time, by discharging the treated water under the condition of intermittent suction, membrane contamination is effectively removed by minimizing membrane contamination. In addition, the micro filter module 7 of the present invention is cheaper than the hollow fiber membrane or tubular precision filter membrane, and can significantly improve the permeation amount compared to the existing separation membrane. It is also easy to use, so its value is high. Powdered activated carbon is added to the aeration tank 6 separated by the vat (B) of the treatment reaction tank (A) to perform adsorption of low molecular weight organic materials by activated carbon and biodegradation by the microbial membrane (8a) formed on the surface of the activated carbon (8). The membrane surface cleaning effect by the upflow of biofilm activated carbon can be expected at the same time. In addition, as shown in FIG. 2, in a biological treatment method containing ammonia nitrogen and organic nitrogen, activated carbon 8 having pores formed on an outer surface thereof is used as a porous carrier, and nitrifying microorganisms move inside the pores on the surface of the carrier to form a biofilm ( 8a) to form, and through the control of dissolved oxygen nitrification in the outside, denitrification in the inside is performed to completely remove the untreated nitrogen in the oxygen-free tank (4).

또한 막유니트의 하단부에 설치된 산기관(9)(9′)에 의한 공기공급으로 형성된 상향류는 막표면의 공기세정과 교류흐름(cross-flow)을 유발하여 막오염 현상을 저감시키고 막분리 폭기조내의 미생물 성장에 필요한 산소를 공급해 주므로 더욱 효율적인 오·폐수처리가 이루어진다. 폭기조(6)의 활성탄 오니성분을 무산소조(4)에 반송시켜 주는 반송펌프(10)는 유기물 및 질소 제거효율을 상승시키는 기능을 한다.In addition, the upward flow formed by the air supply by the diffuser 9 (9 ') installed at the lower end of the membrane unit causes air cleaning and cross-flow on the membrane surface, reducing membrane fouling and reducing membrane separation aeration tank. It supplies oxygen necessary for the growth of microorganisms in the inside, so more efficient wastewater treatment is achieved. The conveying pump 10 which conveys the activated carbon sludge component of the aeration tank 6 to the anoxic tank 4 functions to raise organic matter and nitrogen removal efficiency.

이상과 같이 본 발명은 생물막(8a) 활성탄(8)의 생물학적 처리와 침지형 막분리의 물리적 처리가 연계된 새로운 공정으로써 폭기조(6)에 활성탄(8)을 가하여 부유시켜 활성탄이 갖고 있는 흡착력과 활성탄 표면에 부착·형성된 미생물막(8a)에 의한 오·폐수 중 용존유기물질의 정화능력을 동시에 이용하여 오염물질을 처리하게 하고, 폭기조(6) 내에 침지되어 있는 평판형 마이크로필터(7a)로 조립한 마이크로필터모듈(7)에 의해 부유물질을 효율적으로 제거함으로서 중수도로 이용이 가능한 양질의 처리수를 얻을 수 있다.As described above, the present invention is a novel process in which the biological treatment of the biofilm 8a and the activated carbon 8 and the physical treatment of the immersion type membrane separation are performed by adding activated carbon 8 to the aeration tank 6 to float the adsorptive power and activated carbon possessed by the activated carbon. The contaminant is treated by simultaneously utilizing the ability of purifying dissolved organic matter in the wastewater by the microbial membrane 8a attached to and formed on the surface, and assembled into a flat type micro filter 7a immersed in the aeration tank 6. By removing the suspended matter efficiently by the micro filter module 7, it is possible to obtain a high quality treated water that can be used as a heavy water.

본 발명에서 사용된 기공크기가 0.05∼0.2㎛인 평판형마이크로필터(7a)는 최소 입자크기가 0.2㎛ 정도인 활성슬러지의 고액분리에 적합하며, 저압(0.2kg/ cm2: 150mmHg) 흡인 및 자연압에서 운전시킴으로서 막의 막힘현상(fouling)을 최소화할 수 있으며, 또한 운전 및 유지관리가 쉽고, 장치를 소규모화 할 수 있고, 에너지 비용을 절감할 수 있는 이점을 지닌 장치이다.The plate type micro filter 7a having a pore size of 0.05 to 0.2 μm used in the present invention is suitable for solid-liquid separation of activated sludge having a minimum particle size of about 0.2 μm, and has a low pressure (0.2 kg / cm 2 : 150 mmHg) suction and Operating at natural pressure minimizes fouling of the membrane, it is easy to operate and maintain, the device can be downsized, and the energy cost can be reduced.

첫째, 폭기조(6) 내에 주입한 활성탄(8)은 생물막 담체로 사용하여 미생물들의 군락형성 및 활성탄(8) 표면에 미생물막(8a)을 생성시킴으로서 용존 유기물질의 제거율 향상과 동시에 폭기조(6) 하부 산기관(9)으로 부터 야기된 상향수류와 막표면과의 교차흐름(cross-flow)에 의한 막표면 세정효과를 동시에 얻을수 있다.First, activated carbon (8) injected into the aeration tank (6) is used as a biofilm carrier to form a colony of microorganisms and to produce a microbial membrane (8a) on the surface of the activated carbon (8) to improve the removal rate of dissolved organic substances and at the same time aeration tank (6) The membrane surface cleaning effect due to the cross-flow between the upstream flow and the membrane surface caused by the lower diffuser 9 can be simultaneously obtained.

둘째, 미생물 농도를 고농도로 유지함으로써 처리효율을 증가시킬수 있을 뿐만 아니라 기존 부유성장 미생물의 제거효율보다 접촉면적이 증가되어 처리효율이 증가된다.Second, by maintaining the concentration of microorganisms at a high concentration can not only increase the treatment efficiency, but also increase the treatment efficiency by increasing the contact area than the removal efficiency of the existing suspended growth microorganisms.

셋째, 무산소조(4)의 간헐폭기 운전족건으로 질소제거효율을 향상시키고 폭기조 (6)내의 생물막(8a) 활성탄(8)이 담체역활을 행하므로 미처리된 질소제거 및 유기물 제거효율을 증가시키는 효과가 있다.Third, as the intermittent aeration operation of the anoxic tank 4 improves the nitrogen removal efficiency, and the biofilm 8a and the activated carbon 8 in the aeration tank 6 serve as carriers, thus increasing the efficiency of untreated nitrogen removal and organic matter removal. have.

Claims (3)

처리반응조(A)의 중간을 배플(13)로 구획하여 간헐폭기와 탈질을 위한 무산소조(4)와 오·폐수 중의 유기물질 및 질산화를 제거하는 폭기조(6)로 구성되는 생물막활성탄과 마이크로필터모듈을 이용한 오·폐수 고도처리장치.Biomembrane activated carbon and microfilter module, which is composed of an aeration tank (4) for intermittent aeration and denitrification, and an aeration tank (6) for removing organic substances and nitrification in wastewater by dividing the middle of the treatment reactor (A) into a baffle (13). Wastewater advanced treatment device using. 제1항에 있어서 무산소조(4)에는 교반기(5)와 산기관(9′)이 설치되어 간헐폭기하도록 함을 특징으로 하는 생물막활성탄과 마이크로필터 모듈을 이용한 오·폐수 고도처리장치.The wastewater advanced treatment apparatus using the biofilm activated carbon and the micro filter module according to claim 1, wherein the anoxic tank (4) is provided with an agitator (5) and an acid pipe (9 ') to intermittently aeration. 제1항에 있어서 폭기조(6)에는 공기주입하는 산기관(9)과 활성슬러지와 처리수를 분리하는 마이크로필터모듈(7) 및 생물막(8a)이 있는 활성탄(8)이 첨가됨을 특징으로 하는 생물막활성탄과 마이크로필터 모듈을 이용한 오·폐수 고도처리장치.The aeration tank (6) according to claim 1, characterized in that an aeration pipe (9) for air injection, a micro filter module (7) for separating activated sludge and treated water, and activated carbon (8) with a biofilm (8a) are added. Advanced wastewater treatment system using biofilm activated carbon and micro filter module.
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