KR20030069354A - The organic material and nitrogen removal system using the three phase fluidized bed biofilm reactors - Google Patents

The organic material and nitrogen removal system using the three phase fluidized bed biofilm reactors Download PDF

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KR20030069354A
KR20030069354A KR1020020008947A KR20020008947A KR20030069354A KR 20030069354 A KR20030069354 A KR 20030069354A KR 1020020008947 A KR1020020008947 A KR 1020020008947A KR 20020008947 A KR20020008947 A KR 20020008947A KR 20030069354 A KR20030069354 A KR 20030069354A
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fluidized bed
reactor
nitrogen
bed biofilm
phase fluidized
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KR100430578B1 (en
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백병천
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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
    • C02F3/30—Aerobic and anaerobic processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/02—Biological treatment
    • C02F11/04—Anaerobic treatment; Production of methane by such processes
    • 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
    • C02F3/08—Aerobic processes using moving contact bodies
    • C02F3/085—Fluidized beds
    • 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
    • C02F3/28—Anaerobic digestion processes
    • C02F3/2833—Anaerobic digestion processes using fluidized bed reactors
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Microbiology (AREA)
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  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Biological Treatment Of Waste Water (AREA)

Abstract

PURPOSE: Provided is an organic material and nitrogen removal system for simultaneously removing organic material and nitrogen with high efficiency by fluidizing biocoated activated carbon in an aerobic, anaerobic, and anoxic reactors. CONSTITUTION: The system comprises an anoxic fluidized bed reactor(1) for removing organic materials, an aerobic fluidized bed reactor(2) for removing ammonia and an anaerobic fluidized bed reactor(3) for removing nitrate, the three reactors(1,2,3) are connected in order by a pipe, a first, a second and a third tanks(51,52,53) connected to the reactors(1,2,3), respectively, for storing water used for fluidizing the respective biocoated activated carbon in respective reactors(1,2,3), and an oxygen supply unit(10) for supplying oxygen to the aerobic fluidized bed reactor(2).

Description

3상 유동상 생물막 반응조를 이용한 유기물 및 질소 제거 시스템{THE ORGANIC MATERIAL AND NITROGEN REMOVAL SYSTEM USING THE THREE PHASE FLUIDIZED BED BIOFILM REACTORS}Organic matter and nitrogen removal system using three-phase fluidized bed biofilm reactor {THE ORGANIC MATERIAL AND NITROGEN REMOVAL SYSTEM USING THE THREE PHASE FLUIDIZED BED BIOFILM REACTORS}

본 발명은 3상 유동상 생물막 반응조를 이용한 유기물 및 질소 제거 시스템에 관한 것으로, 특히, 산업시설로부터 다양화되고 있는 유기성 폐수에 함유된 고농도의 유기물과 고농도의 질소를 동시에 제거하는 시스템에 관한 것이다.The present invention relates to a system for removing organic matter and nitrogen using a three-phase fluidized bed biofilm reactor, and more particularly, to a system for simultaneously removing a high concentration of organic matter and a high concentration of nitrogen contained in an organic wastewater diversified from an industrial facility.

국내산업구조가 점차 선진화되고 다양화되면서 하·폐수 또한 그 성상이 다양화되고 있다. 국내 산업시설로부터 다양화되고 있는 유기성 폐수의 경우, 고농도의 질소를 동시에 함유하고 있는 경우가 많기 때문에 유기물 제거뿐만 아니라 질소 저감방안에 대한 대책이 시급히 요청되고 있는 실정이다.As the domestic industrial structure is advanced and diversified, the characteristics of sewage and wastewater are also diversifying. Since organic wastewater diversified from domestic industrial facilities often contain high concentrations of nitrogen at the same time, there is an urgent need for measures to reduce nitrogen as well as to remove organic matter.

현재까지의 고농도 유기성 폐수의 처리는 일차적으로 재래식 혐기성 반응조를 이용하여 유기물 부하를 줄인 후 호기성으로 후 처리하거나, 사업장 내에서 발생하는 저농도 폐수와 혼합한 후 호기성 처리하는 경우가 대부분이다. 그러나 이러한 방법들은 처리시설 용량과 운전비용을 증가시킬 뿐만 아니라, 적정 유기물 제거 효율을 확보하기 힘들며, 고효율의 질소 제거도 기대하기가 힘든 단점이 있다.Until now, the treatment of high concentration organic wastewater has been mainly performed by reducing the organic load using a conventional anaerobic reactor and then post-treatment to aerobic or mixing with low concentration wastewater generated in the workplace and then aerobic treatment. However, these methods not only increase treatment capacity and operating cost, but also are difficult to secure proper organic matter removal efficiency, and are difficult to expect high efficiency nitrogen removal.

따라서, 본 발명은 이와 같은 종래 기술의 결점을 해결하기 위하여 안출한 것으로, 미생물 막이 형성된 활성탄(Biocoated GAC)을 호기성과 혐기성, 무산소 상태의 반응조 내에서 부유상태로 머무르게 하여 유입되어지는 고농도의 유기물과 질소를 동시에 제거하는 3상 유동상 생물막 반응조를 이용한 유기물 및 질소 제거 시스템을 제공하는 데 그 목적이 있다.Accordingly, the present invention has been made to solve the drawbacks of the prior art, and the high concentration of organic matter introduced into the microbial membrane formed activated carbon (Biocoated GAC) in a suspended state in the aerobic, anaerobic, anoxic state of the reaction tank and An object of the present invention is to provide an organic material and nitrogen removal system using a three-phase fluidized bed biofilm reactor that simultaneously removes nitrogen.

이와 같은 목적을 달성하기 위한 본 발명은, 3상 유동상 생물막 반응조를 구비하여 폐수내에 존재하는 유기물과 질소를 제거하는 시스템에 있어서, 상기 3상유동상 생물막 반응조는 유기물을 제거하기 위한 무산소성 부유반응조(Anaerobic Fluidized Bed Biofilm Reactor); 암모니아를 제거하기위한 호기성 부유반응조(Aerobic Fluidized Bed Biofilm Reactor); 및 아질산성 질소와 질산성질소를 제거하기위한 혐기성 부유반응조(Anoxic Fluidized Bed Biofilm Reactor)가 차례로 관을 통해 연결되어 이루어지고, 상기 차례로 연결된 각 반응조와 각기 관을 통해 연결되어, 충진된 미생물 막이 형성된 활성탄을 부유시키기 위해 필요한 유량을 각각 저류하는 제 1, 제 2, 제 3 저류조; 및 상기 호기성 부유반응조에 필요한 산소를 상기 제 2 저류조를 통해 공급하는 산소공급장치를 포함하는 것을 특징으로 한다.In order to achieve the above object, the present invention provides a three-phase fluidized bed biofilm reaction tank for removing organic matter and nitrogen present in wastewater, wherein the three-phase fluidized bed biofilm reactor is an anoxic floating reactor for removing organic matter. Anaerobic Fluidized Bed Biofilm Reactor; Aerobic Fluidized Bed Biofilm Reactor to remove ammonia; And an anaerobic fluidized bed biofilm reactor for removing nitrous nitrogen and nitrate nitrogen, in turn, connected through pipes, and in turn connected to the reactors connected to each other to form filled microbial membranes. First, second, and third storage tanks each storing a flow rate required to float activated carbon; And an oxygen supply device for supplying oxygen necessary for the aerobic flotation reaction tank through the second storage tank.

도 1은 본 발명에 따른 3상 유동상 생물막 반응조를 이용한 유기물 및 질소 제거 시스템의 일 실시예를 나타낸 블록도,1 is a block diagram showing an embodiment of an organic material and nitrogen removal system using a three-phase fluidized bed biofilm reactor according to the present invention;

도 2는 도 1에 도시된 무산소성 부유반응조의 일 실시예를 나타낸 도면,Figure 2 is a view showing an embodiment of the anoxic floating reactor shown in Figure 1,

도 3은 도 1에 도시된 호기성 부유반응조의 일 실시예를 나타낸 도면,3 is a view showing an embodiment of the aerobic floating reactor shown in FIG.

도 4는 도 1에 도시된 혐기성 부유반응조의 일 실시예를 나타낸 도면.Figure 4 is a view showing an embodiment of the anaerobic flotation reactor shown in FIG.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

1 : 무산소성 부유반응조 2 : 호기성 부유반응조1: anoxic suspension reactor 2: aerobic suspension reactor

3 : 혐기성 부유반응조 4 : 침전조3: anaerobic flotation reactor 4: precipitation tank

6 : 유동상 층 7 : 수층6: fluid bed bed 7: water bed

8 : 가스 포집구 10 : 산소공급장치8 gas collecting port 10 oxygen supply device

51, 52, 53 : 저류조51, 52, 53: reservoir

이하, 이와 같은 본 발명의 실시 예를 상세히 설명하면 다음과 같다.Hereinafter, the embodiment of the present invention as described in detail as follows.

도 1은 본 발명에 따른 3상 유동상 생물막 반응조를 이용한 유기물 및 질소 제거 시스템의 일 실시예를 나타낸 블록도, 무산소성 부유반응조(1), 호기성 부유반응조(2), 혐기성 부유반응조(3), 침전조(4), 저류조(51, 52, 53), 및 산소공급장치(10)로 구성된다.1 is a block diagram showing an embodiment of an organic matter and nitrogen removal system using a three-phase fluidized bed biofilm reactor according to the present invention, an anaerobic flotation reactor (1), aerobic flotation reactor (2), anaerobic flotation reactor (3) , A settling tank 4, storage tanks 51, 52, 53, and an oxygen supply device 10.

동 도면에 있어서, 각 반응조(1, 2, 3)는 도 2 내지 도 4와 같이 유동상 층(6)과 수층(7)으로 각기 분리되어 각각 운전되어진다. 특히, 무산소성 부유반응조(1)와 혐기성 부유반응조(3)는 발생되는 메탄 및 CO2, N2가스(gas)를 포집하는 가스 포집구(8)를 상측에 각기 구비하고 있다. 제 1, 제 2, 제 3 저류조(51, 52,53)는 각 반응조(1, 2, 3)와 각기 관을 통해 연결되어, 충진된 미생물 막이 형성된 활성탄을 부유시키기 위해 필요한 유량을 저류한다. 산소공급장치(10)는 호기성 부유반응조(2)에 필요한 산소를 제 2 저류조(52)를 통해 공급한다. 침전조(4)는 혐기성 부유반응조(3)와 관을 통해 연결되어, 유동에 의해 탈리된 슬러지를 제거한다.In the same figure, each of the reactors 1, 2, and 3 is separated into a fluidized bed layer 6 and a water layer 7 as shown in Figs. In particular, the anaerobic flotation reactor 1 and the anaerobic flotation reactor 3 each have a gas collecting port 8 for collecting methane and CO 2 , N 2 gas generated. The first, second, and third storage tanks 51, 52, and 53 are connected to the respective reaction tanks 1, 2, and 3 through respective pipes, and store a flow rate necessary to float the activated carbon on which the filled microbial membrane is formed. The oxygen supply device 10 supplies oxygen necessary for the aerobic floating reaction tank 2 through the second storage tank 52. The settling tank 4 is connected to the anaerobic flotation reactor 3 through a pipe to remove sludge desorbed by the flow.

이와 같이 본 발명은 반응기내에 활성이 큰 미생물을 보다 많이 확보하고 미생물 체류시간을 크게 증가시켜 처리효율의 향상 및 안정화를 얻을 수 있도록 무산소성 및 혐기성, 호기성 유동층 반응조에 미생물이 코팅된 형태의 미생물 막이 형성된 활성탄을 충진시킨 FBBR(Fluidized Bed Biofilm Reactor) 시스템을 제공한다. 이 시스템에서의 공정은 표면적이 큰 미세한 담체인 활성탄을 상향류로 유동화 시키면서 담체 표면에 활성도가 큰 미생물막을 형성시키기 때문에 기존의 생물학적 폐수처리방법에서 문제시되는 단회로 또는 체널링 현상 등의 문제점을 해결할 수 있다. 또한, 상대적으로 큰 상향류 유속에 의해 난류를 형성함으로써 미생물과 기질의 접촉 횟수를 증가시키고 물질전달속도를 크게하여 수리학적체류시간(HRT)을 감소시켜 높은 처리효율을 얻을 수 있다. 또한 FBBR 시스템은 활성탄의 물리적인 흡착과 활성탄 표면에 부착된 미생물막에 의한 생물학적인 흡착처리 메커니즘의 동시 수행으로 인하여 시스템 자체가 안정되고 유기오염물질을 고부하율로 처리할 수 있으며, 부하율 변동에 탄력적이고 장시간 가동이 중지된 후에도 신속한 재가동이 가능하고, 매우 양호한 혼합이 가능하여 충격부하(COD, 독성물질, 온도, pH)에 강한 내성을 갖는 장점이 있다. 이러한 요인들로 인하여 FBBR 시스템은 타 공정에 비하여 체적을 크게 감소시킬 수 있어서 초기투자 비용을 크게 감소시킬 수 있는 잇점이 있다.As described above, the present invention provides a microbial membrane in which microorganisms are coated in an anaerobic, anaerobic, and aerobic fluidized bed reactor to secure more active microorganisms in the reactor and greatly increase microbial retention time to obtain improved treatment efficiency and stabilization. Provided is a FBBR (Fluidized Bed Biofilm Reactor) system filled with activated carbon formed. The process in this system solves the problems such as short circuit or channeling which are problematic in the existing biological wastewater treatment method because the active carbon, which has a large surface area, is fluidized in an upflow and forms a highly active microbial film on the surface of the carrier. Can be. In addition, by forming a turbulent flow with a relatively high upstream flow rate, the number of microbial contact with the substrate increases, and the material transfer rate is increased, thereby reducing the hydraulic staying time (HRT) to obtain high treatment efficiency. In addition, the FBBR system is stable due to the physical adsorption of activated carbon and the biological adsorption treatment mechanism by the microbial membrane attached to the surface of the activated carbon. It is possible to restart quickly after a long period of inactivity, and very good mixing is possible, which has the advantage of having a strong resistance to impact loads (COD, toxic substances, temperature, pH). These factors have the advantage that the FBBR system can significantly reduce the volume compared to other processes, thereby significantly reducing the initial investment costs.

이상에서 설명한 바와 같이 본 발명은, 고농도의 유기물질과 고농도의 질소를 함유한 유기성 폐수 및 산업폐수 그리고 도시하·폐수에도 적용이 가능한 고도 폐수처리 기술로 이용될 수 있다. 또한 국내 환경시장에 질소 제거를 위한 새로운 개념의 프로세스(process)를 제시할 수 있을 것으로 기대되며, 기존의 질소처리에 비해 높은 질소 제거 효율을 얻을 수 있을 뿐만 아니라 경제적으로 많은 운전비용을 절감시킬 수 있다.As described above, the present invention can be used as an advanced wastewater treatment technology applicable to organic wastewater and industrial wastewater containing high concentrations of organic substances and high concentrations of nitrogen, and municipal wastewater. In addition, it is expected to present a new concept of process for nitrogen removal in the domestic environmental market, and not only can achieve high nitrogen removal efficiency compared to the existing nitrogen treatment, but also economically save a lot of operating costs. have.

Claims (4)

3상 유동상 생물막 반응조를 구비하여 폐수내에 존재하는 유기물과 질소를 제거하는 시스템에 있어서,In the system having a three-phase fluidized bed biofilm reactor to remove organic matter and nitrogen present in the waste water, 상기 3상 유동상 생물막 반응조는 유기물을 제거하기 위한 무산소성 부유반응조; 암모니아를 제거하기위한 호기성 부유반응조; 및 아질산성 질소와 질산성질소를 제거하기위한 혐기성 부유반응조가 차례로 관을 통해 연결되어 이루어지고,The three-phase fluidized bed biofilm reactor is an oxygen-free floating reactor for removing organic matter; Aerobic flotation reactor for removing ammonia; And an anaerobic flotation reactor for removing nitrous nitrogen and nitrate nitrogen in turn through a pipe, 상기 차례로 연결된 각 반응조와 각기 관을 통해 연결되어, 충진된 미생물 막이 형성된 활성탄을 부유시키기 위해 필요한 유량을 각각 저류하는 제 1, 제 2, 제 3 저류조; 및First, second, and third storage tanks connected to each of the reactors connected in turn and connected through respective pipes, respectively, to store a flow rate required to float the activated carbon on which the filled microbial membrane is formed; And 상기 호기성 부유반응조에 필요한 산소를 상기 제 2 저류조를 통해 공급하는 산소공급장치를 포함하는 3상 유동상 생물막 반응조를 이용한 유기물 및 질소 제거 시스템.A system for removing organic matter and nitrogen using a three-phase fluidized bed biofilm reactor comprising an oxygen supply device for supplying oxygen required for the aerobic flotation reactor through the second storage tank. 제 1 항에 있어서, 상기 차례로 연결된 각 반응조는 유동상 층과 수층으로 각기 분리되어 각각 운전되어지는 것을 특징으로 하는 3상 유동상 생물막 반응조를 이용한 유기물 및 질소 제거 시스템.The organic and nitrogen removal system using the three-phase fluidized bed biofilm reactor according to claim 1, wherein each of the reactors connected in turn is operated separately from the fluidized bed layer and the water layer. 제 1 항 또는 제 2 항에 있어서, 상기 무산소성 부유반응조와 혐기성 부유반응조는 발생되는 메탄 및 CO2, N2가스를 포집하는 가스 포집구를 상측에 각기 구비하고 있는 것을 특징으로 하는 3상 유동상 생물막 반응조를 이용한 유기물 및 질소 제거 시스템.3. The three-phase flow according to claim 1 or 2, wherein the anoxic flotation reactor and the anaerobic flotation reactor each have a gas collecting port for collecting methane and CO 2 , N 2 gas generated thereon. Organics and Nitrogen Removal System Using Phase Biofilm Reactor. 제 1 항에 있어서, 상기 혐기성 부유반응조와 관을 통해 연결되어, 유동에 의해 탈리된 슬러지를 제거하는 침전조를 더 포함하는 것을 특징으로 하는 3상 유동상 생물막 반응조를 이용한 유기물 및 질소 제거 시스템.The organic and nitrogen removal system using a three-phase fluidized bed biofilm reactor according to claim 1, further comprising a settling tank connected to the anaerobic flotation reactor through a pipe to remove sludge desorbed by flow.
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