KR20130064874A - Operating method of submerged membrane bioreactor - Google Patents

Operating method of submerged membrane bioreactor Download PDF

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KR20130064874A
KR20130064874A KR20110131468A KR20110131468A KR20130064874A KR 20130064874 A KR20130064874 A KR 20130064874A KR 20110131468 A KR20110131468 A KR 20110131468A KR 20110131468 A KR20110131468 A KR 20110131468A KR 20130064874 A KR20130064874 A KR 20130064874A
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air
membrane
dissolved oxygen
blower
oxygen concentration
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KR101367711B1 (en
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엄태경
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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
    • 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
    • C02F3/06—Aerobic processes using submerged filters
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C02F2201/005—Valves
    • 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

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  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Activated Sludge Processes (AREA)

Abstract

PURPOSE: An operating method of submerged membrane bioreactor is provided to effectively treat sewage despite the inflow of lower flow and lower concentration inflow and enhance flowing water by removing nitrogen and phosphorus. CONSTITUTION: An operating method of submerged membrane bioreactor comprises the following step. Dissolved oxygen concentration meter and oxidation and reduction electrometer are equipped and connected to an automatic controlling device. When the inflow and inflow concentration of the sewage is low, dissolved oxygen concentration, acid deoxidation electric potential and aerobic anaerobic driving time are controlled by controlling a valve which controls a circulated gas and an amount of air controlling valve which supplies air to an aerobic blower and a membrane cleansing blower in the automatic controlling device. [Reference numerals] (AA) Dissolved oxygen concentration(mg/L); (BB) Hour(Hr)

Description

침지식 막 생물반응장치의 운전방법{Operating method of submerged membrane bioreactor}Operating method of submerged membrane bioreactor

본 발명은 하수 또는 폐수 등의 고도처리를 하는 침지식 막 생물반응장치의 운전에 대한 기술이다.The present invention is a technique for the operation of the immersion membrane bioreactor for advanced treatment of sewage or wastewater.

본 발명자의 등록특허 "제10-1050375호 부하변동에 대응이 용이한 침지식 막 생물반응장치 및 이를 이용한 하수처리방법(201.07.13)"는 하수 등의 고도처리에 유용한 장치 및 방법이지만, 고도처리방법에서 특히 시설 용량에 비하여 하수의 유입유량이 매우 적은 경우와 유입농도가 낮게 유입되는 경우의 고도처리에 대하여, 고도처리방법을 제한적으로 제공하고 있어서, 상기 발명의 장치를 이용하여 실시할 수 있는 더 많은 운전방법을 제공할 필요가 발생하였다.Although the present inventors have registered patent "No. 10-1050375, the submerged membrane bioreactor and the sewage treatment method using the same (201.07.13) that are easy to cope with load fluctuations" are devices and methods useful for advanced treatment of sewage and the like, In the treatment method, in particular, for the advanced treatment in which the inflow flow rate of the sewage is very small compared to the capacity of the facility and the inflow concentration is low, the advanced treatment method is provided, so that the apparatus of the present invention can be used. There is a need to provide more ways of operation.

본 발명이 해결하고자 하는 과제는 상기 부하변동에 대응이 용이한 침지식 막 생물반응장치를 사용하는 하수 등의 고도처리에 있어서, 특히 시설 용량에 대하여 하수의 유입량이 매우 적고 농도가 낮은 경우에, 효과적인 고도처리 방법을 제공하는 것이다.The problem to be solved by the present invention is in the advanced treatment of sewage and the like using the submerged membrane bioreactor, which is easy to cope with the load fluctuations, especially when the inflow of sewage is very small with respect to the capacity of the facility, and the concentration is low, It is to provide an effective advanced treatment method.

"부하변동에 대응이 용이한 침지식 막 생물반응장치"를 사용하는 하수 등의 고도처리에 있어서,In the advanced treatment of sewage and the like using "immersion-type membrane bioreactors that can easily cope with load fluctuations,"

호기조(510)의 내부에 침지식 막 여과기(630)를 설치하고, 막 여과기의 하부에, 호기용 송풍기(550)로부터 공기를 공급받는 산기장치를 설치하고;An immersion membrane filter 630 is installed inside the aeration tank 510, and an air diffuser for receiving air from the air blower 550 is installed in the lower part of the membrane filter;

막 여과기의 하부에 막 세정 송풍기(620)로부터 공기를 공급받는 막 세정용 산기장치(640)를 설치하고;A membrane cleaning air disperser 640 is provided below the membrane filter to receive air from the membrane cleaning blower 620;

막 여과기의 상부 수면에, 막 여과기를 통과한 공기를 포집하는 차단덮개(650)를 설치하고;On the upper surface of the membrane filter, a blocking cover 650 for collecting air passing through the membrane filter is installed;

상기 차단덮개로부터 막 세정 송풍기(620)의 입구 배관에 연결되게 가스 순환 관(660)을 설치하고;A gas circulation pipe 660 is connected to the inlet pipe of the membrane cleaning blower 620 from the blocking cover;

상기 가스 순환 관에 순환가스량 조절밸브(680)를 설치하고, 송풍기 입구에 공기량 조절밸브(690)를 설치하고;Install a circulating gas amount control valve 680 in the gas circulation pipe, and install an air amount control valve 690 in the blower inlet;

상기 호기조 내에 용존산소 농도 계(10와 산화환원전위계(950)를 설치하고;A dissolved oxygen concentration meter 10 and a redox potential meter 950 are installed in the aerobic tank;

운전시간 제어용 타이머와 PLC를 내장하고, 하수 유입량 및 유입농도에 따라Built-in timer and PLC for operation time control, depending on sewage inflow and inflow concentration

효과적인 고도처리가 되도록 한 가각의 운전 모드를 프로그램으로 입력한 자동제어기(30)에, 상기 산화환원 전위계와 용존산소 농도계를 연결하여 측정치를 전송하고;Connecting the redox potentiometer and the dissolved oxygen concentration meter to the automatic controller 30 which inputs the respective operation modes to the effective altitude processing, and transmits the measured values;

하수의 유입량 및 수질농도변화에 따라, 운전 모드를 적용하여 상기 자동제어기에서 상기 호기용 송풍기의 운전시간과 송풍량을 제어하고, 막 세정 송풍기로 공급되는 공기량 또는 공기량과 공기 공급시간을 제어하여, 상기 호기 조에서 하수가 효과적으로 고도처리 되도록 하는 것을 특징으로 하는 침지식 막 생물반응장치의 운전방법을 제공한다.According to the inflow amount of the sewage and the change in the water quality, the operation mode is applied to control the operation time and the blowing amount of the exhalation blower in the automatic controller, and the amount of air or the amount of air supplied to the membrane cleaning blower and the air supply time, It provides a method of operating an immersion membrane bioreactor characterized in that the sewage treatment in the aerobic tank to be highly advanced.

본 발명의 효과는 하수 등의 고도처리에 있어서, 저 유량 및 저 농도 유입시에도, 효과적인 고도처리가 가능하여, 질소 및 인의 제거율이 높아서 방류수질을 개선하고, 수계의 환경을 보전하는 효과가 있다.The effect of the present invention is that in the high-level treatment of sewage and the like, even at a low flow rate and low concentration inflow, the effective high-level treatment is possible, and the removal rate of nitrogen and phosphorus is high, which improves the quality of discharged water and preserves the environment of the water system. .

제1도는 침지식 막 생물반응 조의 구성도
제2도는 유입하수량과 농도변화에 대한 운전상태를 나타낸 설명도
제3도는 유입하수량과 농도변화에 대하여 용존산소 농도와 산화환원 전위를 제어하는 설명도
제4도는 유입하수량과 농도가 극히 낮은 경우의 운전상태를 나타내는 설명도1 is a schematic diagram of a submerged membrane bioreactor.
2 is an explanatory diagram showing the operating conditions for the inflow sewage and concentration change
3 is an explanatory diagram of controlling dissolved oxygen concentration and redox potential in terms of influent sewage and concentration change
4 is an explanatory diagram showing an operating state in the case where the inflow sewage and concentration are extremely low

"부하변동에 대응이 용이한 침지식 막 생물반응장치"를 사용하는 하수 등의 고도처리에 있어서,In the advanced treatment of sewage and the like using "immersion-type membrane bioreactors that can easily cope with load fluctuations,"

호기 조(510)의 내부에 침지식 막 여과기(630)를 설치하고, 막 여과기의 하부에, 호기용 송풍기(550)로부터 공기를 공급받는 산기장치를 설치하고, 막 여과기의 하부에 막 세정 송풍기(620)로부터 공기를 공급받는 막 세정용 산기장치(640)를 설치하였다.An immersion type membrane filter 630 is installed inside the exhalation tank 510, an air diffuser which receives air from the exhalation blower 550 is installed under the membrane filter, and a membrane cleaning blower is provided under the membrane filter. A membrane cleaning air disperser 640 that receives air from 620 was installed.

상기 막 여과기의 상부 수면에, 막 여과기를 통과한 공기를 포집하는 차단덮개(650)를 설치하고;On the upper surface of the membrane filter, a blocking cover (650) for collecting the air passing through the membrane filter is installed;

상기 차단덮개로부터 막 세정 송풍기(620)의 입구 배관에 연결되게 가스 순환 관(660)을 설치하고, 상기 가스 순환 관에 순환가스량 조절밸브(680)를 설치하고, 상기 막 세정 송풍기의 입구에 공기량 조절밸브(690)를 설치하였다.A gas circulation pipe 660 is installed to be connected to the inlet pipe of the membrane cleaning blower 620 from the blocking cover, a circulating gas amount control valve 680 is installed in the gas circulation pipe, and an air amount is provided at the inlet of the membrane cleaning blower. Control valve 690 was installed.

상기 호기조 내에 용존산소 농도 계(10와 산화환원전위계(950)를 설치하고; 운전시간 제어용 타이머와 PLC를 내장하고, 하수 유입량 및 유입농도에 따라 효과적인 고도처리가 되도록 한 가각의 운전 모드를 프로그램으로 입력한 자동제어기(30)에, 상기 산화환원 전위계와 용존산소 농도계를 연결하여 측정치를 전송하였다.Dissolved oxygen concentration meter (10 and redox potentiometer 950) is installed in the aerobic tank; a built-in timer for operation time control and PLC, and each operation mode is programmed to allow effective altitude treatment according to sewage inflow and inflow concentration. The measured value was connected to the input automatic controller 30 by connecting the redox electrometer and the dissolved oxygen concentration meter.

하수의 유입량 및 수질농도변화에 따라,각각 다른 운전 모드를 적용하여 상기 자동제어기에서 상기 호기용 송풍기의 운전시간과 송풍량을 제어하고, 상기 막 세정 송풍기로 공급되는 공기량 또는 공기량과 공기 공급시간을 제어하여, 상기 호기조에서 하수가 효과적으로 고도처리 되도록 하였다.According to the inflow of the sewage and the change in the water quality, each operation mode is applied to control the operation time and the air flow rate of the exhalation blower in the automatic controller, and control the amount of air or the air supply time and the air supply time to the membrane cleaning blower. Thus, the sewage in the exhalation tank was effectively treated.

본 발명에 대하여 더 자세히 설명하면 다음과 같다.More detailed description of the present invention is as follows.

제2도는 본 발명의 일 실시예를 나타낸 것으로서, 유입하수량과 유입 하수의 농도에 따라 각각 다른 상태로 운전하는 것을 나타낸 것이다.Figure 2 shows an embodiment of the present invention, showing that the operation in different states according to the inflow and sewage concentration.

제2도에서 A는 A2/O공정 또는 혐기 활성슬러지 공정 등에서 하수가 정상적으로 유입되는 경우에 호기조(510)의 용존 산소 농도를 2mg/L로 유지하면서,호기 조를 질산화 조로 이용하여 고도처리를 하는 것을 나타내고 있다.In FIG. 2, in the case where sewage flows normally in the A 2 / O process or the anaerobic activated sludge process, A maintains the dissolved oxygen concentration of the aerobic tank 510 at 2 mg / L, and uses the aerobic tank as a nitrification tank to perform advanced treatment. It is shown.

B는 A2/O공정 또는 혐기 활성슬러지 공정 등에서 하수유입량이 줄거나 유입농도가 낮아진 경우에, 호기 용 송풍기(550)의 회전수를 줄여서 송풍 량을 줄이고 동시에 호기용 송풍기를 단속적으로 운전하고, 막 세정 송풍기(620)의 공기량 조절밸브를 단속적으로 개폐하면서 호기 조(510)에 공기를 공급, 차단을 반복하여, 호기 조를 혐기상태와 호기상태로 반복적으로 운전하면서, 질소와 인을 제거하는 고도처리를 하는 것을 나타내고 있다.B is the A 2 / O process or anaerobic activated sludge process when the amount of sewage inflow is reduced or the inflow concentration is low, reducing the number of air flow by reducing the number of air blower 550 for exhalation, and at the same time to operate the air blower intermittently, By supplying and blocking air to the exhalation tank 510 while intermittently opening and closing the air volume control valve of the membrane cleaning blower 620, the nitrogen gas and phosphorus are removed while repeatedly operating the exhalation tank in anaerobic and aerobic states. The altitude treatment is shown.

상기 호기상태에서는 질산화가 일어나고 혐기상태에서는 탈질이 일어나면서 고도처리가 된다.Nitrification occurs in the aerobic state, and denitrification occurs in the anaerobic state, which is highly processed.

C는 호기용 송풍기(550)의 송풍량을 줄이거나 또는 호기용 송풍기의 운전을 중지하고 , 공기량 조절밸브의 개도를 줄여서, 막 세정 송풍기에 공급하는 공기량을 줄여서, 호기 조(510)의 용존산소 농도를 0.3~0.5mg/L로 낮게 유지하면서, 동시 질산화 탈질을 하는 고도처리를 하는 것을 나타낸 것이다.C decreases the amount of air blown out of the exhalation blower 550 or stops the operation of the exhaled blower, reduces the amount of air volume control valve, and reduces the amount of air supplied to the membrane cleaning blower, thereby reducing the dissolved oxygen concentration of the exhalation tank 510. While maintaining a low 0.3 ~ 0.5mg / L, it is shown to perform a high-treatment for simultaneous nitrification denitrification.

용존산소 농도를 0.3~0.5mg/L로 낮게 유지하면, 호기 조 내에서 질산화 세균은 암모니아성 질소를 산화화여 질산성 질소로 전환하는 질산화를 하고, 탈질세균은 질산성 질소를 탈질하여 고도처리가 이루어 진다.If the dissolved oxygen concentration is kept as low as 0.3 ~ 0.5mg / L, the nitrifying bacteria nitrify the ammonia nitrogen and convert it into nitrate nitrogen in the aerobic tank, and the denitrifying bacteria denitrate the nitrate nitrogen so that it is highly processed. Is done.

D는 호기용 송풍기(550)의 운전을 정지하고, 막 세정 송풍기에 공기를 공급하는 공기량 제어밸브(690)의 개도를 줄인 상태에서, 공기량 제어 밸브를 단속적으로 개폐를 반복하면서, 호기 조(510)의 내부를 혐기 상태와 약한 호기상태가 반복되도록 하여, 동시질산화 탈질을 하여 고도처리를 하는 것을 나타낸 것이다.D stops the operation of the exhalation blower 550, and the opening and closing of the air amount control valve 690 which interrupts the opening degree of the air amount control valve 690 which supplies air to a membrane washing blower, intermittently opens and closes the exhalation tank 510 The anaerobic and weak aerobic conditions are repeated in the inside of the shell), which shows the high processing by co-nitridation and denitrification.

상기 공기량 제어 밸브의 개도를 줄이고, 공기량 제어 밸브를 단속적으로 개폐할때 공기량 제어밸브를 닫아서 막 세정 송풍기(620)에 공기 공급이 중단되어도Even if the air supply to the membrane cleaning blower 620 is stopped by reducing the opening degree of the air flow control valve and closing the air flow control valve when the air flow control valve is intermittently opened and closed.

순환가스가 막 세정 송풍기로 공급되면서 순환하므로, 막 여과기의 세정은 계속이루어지기 때문에 막의 오염이나 막힘은 방지된다.Since the circulating gas is circulated while being supplied to the membrane cleaning blower, the membrane filter is cleaned continuously so that contamination or clogging of the membrane is prevented.

제3도는 호기 조(510)에서 동시 질산화 탈질을 하는 경우에 있어서, 용존 산소 농도와 산화환원 전위의 관계를 나타낸 것으로 "나"는 용존산소 농도를 0.3 ~ 0.5 mg/L로 낮게 유지하는 것을 나타내고 있으며, "가"는 이에 대응하는 산화환원 전위가 +의 특정한 값인 것을 나타내고 있다.3 shows the relationship between the dissolved oxygen concentration and the redox potential in the case of simultaneous nitrification and denitrification in the aerobic tank 510. “I” indicates that the dissolved oxygen concentration is kept low at 0.3 to 0.5 mg / L. "A" indicates that the corresponding redox potential is a specific value of +.

"다"는 호기 조(510)에서 낮은 용존산소 농도를 유지하면서, 혐기 상태와 호기상태를 반복하게 하면서, 동시 질산화 탈질을 하는 것을 나타낸 것이다."C" indicates simultaneous nitrification and denitrification, while allowing the anaerobic and aerobic states to be repeated while maintaining a low dissolved oxygen concentration in the aerobic tank 510.

"라"는 상기 "다"에 대응하는 산화환원 전위 값의 변화를 나타낸 것으로서, 산화환원 전위 값이 호기 상태에서는 +값으로 변화하고, 혐기 상태에서는 -값으로 변화하는 것을 나타낸 것이다."D" represents a change in the redox potential value corresponding to "C", and indicates that the redox potential value changes to a positive value in an aerobic state and to a negative value in an anaerobic state.

제4도는 유입하수량이 더 적고, 유입 하수의 농도도 저하한 경우에, 제3도와 같이 용존산소 농도를 낮추거나 혐기 호기 상태를 반복하며 운전하다가, 일정시간 이후에는 혐기 상태로 유지하면서, 내생 탈질을 유도하면서 고도처리를 하는 것을 나타낸 것이다.In FIG. 4, when the amount of inflow sewage is less and the concentration of inflow sewage is lowered, endurance denitrification is performed while lowering the dissolved oxygen concentration or repeating the anaerobic aerobic state as shown in FIG. 3, and maintaining the anaerobic state after a certain time. It shows that the altitude processing while inducing.

막 세정 송풍기에 공기공급을 중단하여 혐기상태를 유지하더라도, 막세정 송풍기에 순환가스가 공급되면서, 막세정이 이루어짐과 동시에 순환가스의 부상력으로 하수가 호기 조 내부를 순환하므로 완전혼합상태가 유지되어, 슬러지의 침전이 방지되고,하수와 미생물의 접촉이 효과적으로 이루어져서 내생탈질이 이루어 진다.Even if the membrane cleaning blower is stopped and the anaerobic state is maintained, the circulating gas is supplied to the membrane cleaning blower, so that the membrane is cleaned and the sewage circulates inside the exhalation tank due to the floating force of the circulating gas, thus maintaining a completely mixed state. The sludge is prevented, and the sewage and microorganisms are effectively contacted, so that endogenous denitrification is achieved.

상기 제2도내지 제4도에 있어서, 도면에 별도로 표시하지는 않았지만 용존 산소를 낮게 유지하거나 낮은 용존 산소 농도조건에서 혐기 호기 상태를 반복하면서 처리하는 경우에는, 1일 중 1~2시간은 용존산소 농도가 2.0mg/L이 되도록 호기 상태로 운전하여, 미생물의 활성을 높이고 사상균의 발생을 억제한다.In FIGS. 2 to 4, although not separately shown in the drawings, dissolved oxygen is maintained for 1 to 2 hours per day when the dissolved oxygen is kept low or the anaerobic aerobic condition is repeated under low dissolved oxygen concentration conditions. It is operated in an aerobic state so that the concentration is 2.0 mg / L, thereby increasing the activity of microorganisms and suppressing the occurrence of filamentous bacteria.

용존산소 농도나 산화환원 전위가 고도처리에 미치는 영향에 대하여는 상기 예시한 특허에 상술되어 있으므로 본 발명에서는 별도로 설명하지 않기로 한다.The effect of dissolved oxygen concentration or redox potential on advanced processing is detailed in the patents exemplified above, and thus will not be described separately in the present invention.

상기 제2도 내지 제4도에 나타낸 운전 상태는 각각 운전 모드로 자동제어기에 프로그램으로 입력하여, 운전자가 하수의 유입량과 유입농도상태에 따라 적합한 운전모드를 선택하면, 호기 조(510)에 설치한 용존산소 농도계(10)와 산화 환원 전위계(950), 자동 제어기(30)에 내장된 타이머 및 PLC가 연계작동하여, 호기용 송풍기(550) 과 공기량 제어 밸브(690)에 제어신호를 보내서, 자동으로 선택한 운전 모드에 부합하는 운전상태가 되도록 제어한다.The driving states shown in FIGS. 2 to 4 are respectively inputted to the automatic controller in the operation mode, and when the driver selects an appropriate operation mode according to the inflow amount and the inflow concentration state of the sewage, it is installed in the exhalation tank 510. A dissolved oxygen concentration meter 10, a redox potentiometer 950, a timer built in the automatic controller 30, and a PLC are linked to each other to send a control signal to the exhalation blower 550 and the air flow control valve 690, Automatically control to be in operation state corresponding to selected operation mode.

또한 생물학적으로 총인 제거가 미흡한 경우에는 호기 조(10)에 황산철이나 염화제2철 등 철을 기제로 한 응집제를 제거하고자 하는 총인 양에 대하여, 2~3 mole 의 비율로 주입하면, 총인 제거가 됨과 동시에 막이 막힘을 방지하는 효과도 있다(도시하지 않음).In addition, if the removal of biological phosphorus is insufficient, when the ratio of 2 to 3 mole is injected to the total phosphorus to remove iron-based coagulant such as iron sulfate or ferric chloride, the total phosphorus removal is performed. At the same time, there is an effect of preventing the blockage (not shown).

10 용존산소 농도계
30 자동제어기
510 호기조
530 산기장치
550 호기 용 송풍기
620: 막 세정 송풍기
630: 막 여과기
640: 막 세정용 산기장치
650: 차단 덮개
660: 가스순환 관
680: 순환가스량 조절밸브
690: 공기량 조절밸브
950 산화환원전위계
1000 막 여과수 배관10 dissolved oxygen concentration meter
30 Automatic Controller
Unit 510
530 diffuser
Blower for Unit 550
620: membrane cleaning blower
630: membrane filter
640: diffuser device for membrane cleaning
650: blocking cover
660: gas circulation tube
680: circulating gas volume control valve
690: air volume control valve
950 redox potentiometer
1000 membrane filtered water tubing

Claims (5)

"부하변동에 대응이 용이한 침지식 막 생물반응장치"를 사용하는 하수 등의 고도처리에 있어서,
호기 조(510)의 내부에 침지식 막 여과기(630)를 설치하고, 막 여과기의 하부에, 호기 용 송풍기(550)로부터 공기를 공급받는 산기장치를 설치하고;
막 여과기의 하부에 막 세정 송풍기(620)로부터 공기를 공급받는 막 세정용 산기장치(640)를 설치하고;
막 여과기의 상부 수면에, 막 여과기를 통과한 공기를 포집하는 차단덮개(650)를 설치하고;
상기 차단덮개로부터 막 세정 송풍기(620)의 입구 배관에 연결되게 가스 순환 관(660)을 설치하고;
상기 가스 순환 관에 순환가스량 조절밸브(680)를 설치하고, 송풍기 입구에 공기량 조절밸브(690)를 설치하고;
상기 호기조 내에 용존산소 농도 계(10와 산화환원전위계(950)를 설치하고;
운전시간 제어용 타이머와 PLC를 내장하고, 하수 유입량 및 유입농도에 따라
효과적인 고도처리가 되도록 한 가각의 운전 모드를 프로그램으로 입력한 자동제어기(30)에, 상기 산화환원 전위계와 용존산소 농도계를 연결하여 측정치를 전송하고;
하수의 유입량 및 수질농도변화에 따라,운전 모드를 적용하여 상기 자동제어기에서 상기 호기용 송풍기의 운전시간과 송풍량을 제어하고, 막세정 송풍기로 공급되는 공기량 또는 공기량과 공기 공급시간을 제어하여, 상기 호기조에서 하수가 효과적으로 고도처리 되도록 하는 것을 특징으로 하는 침지식 막 생물반응장치의 운전방법.In the advanced treatment of sewage and the like using "immersion-type membrane bioreactors that can easily cope with load fluctuations,"
An immersion type membrane filter 630 is installed inside the exhalation tank 510, and an air diffuser which receives air from the exhalation blower 550 is installed under the membrane filter;
A membrane cleaning air disperser 640 is provided below the membrane filter to receive air from the membrane cleaning blower 620;
On the upper surface of the membrane filter, a blocking cover 650 for collecting air passing through the membrane filter is installed;
A gas circulation pipe 660 is connected to the inlet pipe of the membrane cleaning blower 620 from the blocking cover;
Install a circulating gas amount control valve 680 in the gas circulation pipe, and install an air amount control valve 690 in the blower inlet;
A dissolved oxygen concentration meter 10 and a redox potential meter 950 are installed in the aerobic tank;
Built-in timer and PLC for operation time control, depending on sewage inflow and inflow concentration
Connecting the redox potentiometer and the dissolved oxygen concentration meter to the automatic controller 30 which inputs the respective operation modes to the effective altitude processing, and transmits the measured values;
According to the inflow of the sewage and the change in the water quality concentration, the operation mode is applied to control the operation time and the blowing amount of the exhalation blower in the automatic controller, and the amount of air or air and the air supply time supplied to the membrane cleaning blower, A method of operating an immersion membrane bioreactor, characterized in that for effectively treating the sewage in an aerobic tank. 제1항에 있어서,
호기 조 (510)내에서, 호기 상태와 혐기 상태를 반복하게 하면서 고도처리를 하되, 호기 상태에서는 용존산소 농도를 1.5mg/L로 유지하도록 하고 혐기 상태에서는 용존산소 농도를 0.1mg/L이하가 되도록 하되, 공기량 제어밸브(690)를 닫고 막 막 세정 송풍기는 운전을 계속하고, 호기 용 송풍기는 운전을 정지하도록 하는 것을 특징으로 하는 침지식 막 생물반응장치의 운전방법.The method of claim 1,
In the aerobic tank 510, the advanced treatment is performed while repeating the aerobic state and the anaerobic state, while maintaining the dissolved oxygen concentration at 1.5 mg / L in the aerobic state and the dissolved oxygen concentration below 0.1 mg / L in the anaerobic state To, but closes the air flow control valve (690) and the membrane membrane cleaning blower continues to operate, the exhalation blower to stop the operation of the submerged membrane bioreactor. 제1항에 있어서,
호기 조(510) 내에서, 용존 산소 농도와 산화환원 전위를 동시에 제어하거나 또는 용존 산소 농도와 산화환원 전위, 혐기 호기 반복운전기간을 제어하면서 고도처리를 하는 것을 특징으로 하는 침지식 막 생물반응장치의 운전방법.The method of claim 1,
In the exhalation tank 510, an immersion type membrane bioreactor characterized in that it performs advanced processing while simultaneously controlling dissolved oxygen concentration and redox potential, or controlling dissolved oxygen concentration and redox potential and anaerobic repetitive operation period. How to operate. 제3항에 있어서,
1일 중 처리공정의 후기에 혐기 시간으로 유지하고, 1~2시간은 용존산소 농도 1.5mg/L이상으로 제어하면서, 고도처리를 하는 것을 특징으로 하는 침지식 막 생물반응장치의 운전방법.The method of claim 3,
Operation method of the immersion membrane bioreactor, characterized in that the advanced treatment, while maintaining the anaerobic time at the end of the treatment process during the day, 1 to 2 hours or more dissolved oxygen concentration 1.5mg / L. 제1항에 있어서,
생물학적으로 총인제거가 미흡한 경우, 호기 조(510)에 철을 주성분으로 하는 응집제를 주입하여, 화학적으로 총인을 제거하고, 막 여과기의 막힘을 방지하는 것을 특징으로 하는 침지식 막 생물반응장치의 운전방법.The method of claim 1,
If biological phosphorus removal is insufficient, an agglomerate containing iron as the main component is injected into the aerobic tank 510 to chemically remove phosphorus and prevent clogging of the membrane filter. Way.
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