KR101022403B1 - Automatically operated advanced technology and equipment for the treatment of sewage and wastewater - Google Patents

Automatically operated advanced technology and equipment for the treatment of sewage and wastewater Download PDF

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KR101022403B1
KR101022403B1 KR1020080125256A KR20080125256A KR101022403B1 KR 101022403 B1 KR101022403 B1 KR 101022403B1 KR 1020080125256 A KR1020080125256 A KR 1020080125256A KR 20080125256 A KR20080125256 A KR 20080125256A KR 101022403 B1 KR101022403 B1 KR 101022403B1
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tank
line
backwashing
suction
liquid supply
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KR20100066785A (en
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최송휴
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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
    • 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
    • B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
    • 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
    • C02F3/30—Aerobic and anaerobic processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/04—Backflushing
    • 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

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
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  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

본 발명은 하수와 폐수를 처리하는 고도처리용 막분리 장치에 있어서, 분리막유니트를 통해 처리수가 여과될 대 미생물 등의 고형물이 처리수의 흐름에 따라 분리막 표면으로 같이 이동하여 공극을 막는 폐색현상이 일어날 때, 처리수를 반대로 주입하여 폐색된 분리막 유니트를 간단하고 완전하게 해소할 수 있는 고도처리용 막분리 장치의 폐색 방지장치에 관한 것이다.

Figure R1020080125256

하수, 폐수, 막분리, 고도처리, 폐색, 역세정

The present invention is a membrane treatment apparatus for treating sewage and wastewater, the blockage phenomenon that the solids, such as microorganisms are moved to the surface of the separation membrane as the treated water flows when the treated water is filtered through the membrane unit to block the pores When this occurs, the present invention relates to a blockage preventing device for an advanced membrane separation device capable of simply and completely eliminating a blocked membrane unit by injecting treated water in reverse.

Figure R1020080125256

Sewage, Wastewater, Membrane Separation, Advanced Treatment, Blockage, Backwashing

Description

고도처리용 막분리장치의 폐색 방지장치{Automatically operated advanced technology and equipment for the treatment of sewage and wastewater}Automatically operated advanced technology and equipment for the treatment of sewage and wastewater}

본 발명은 하수와 폐수를 처리하는 고도처리용 막분리 장치에 관한 것으로, 더욱 상세하게는 고도처리용 막분리 장치로 폐수를 처리하는 과정에서 발생되는 폐색을 방지할 수 있는 고도처리용 막분리장치의 폐색 방지장치에 관한 것이다.The present invention relates to an advanced membrane separation apparatus for treating sewage and wastewater, and more particularly, an advanced membrane separation apparatus capable of preventing blockage generated in the process of treating wastewater with the advanced membrane separation apparatus. It relates to a blockage prevention device of.

기존의 분리막공법을 적용한 막분리시설은 높고 안정적인 처리효율로 인해 많은 각광을 받고 있으나 장기간 운전시 발생하는 분리막폐색이라는 태생적인 문제점을 가지고 있다. 기존에는 분리막폐색이 발생시 분리막유니트를 운전중이던 호기조 또는 막분리조에서 꺼내어 폐색을 해소시킬 수 있는 산, 알칼리, 산화제 등의 화학물질이 담긴 별도로 제작된 세정조에 옮겨 침지시키고 난 후 수 시간 방치함으로써 폐색을 해결하였다. 그러나 이는 많은 인력과 시간과 비용을 필요로 하는 과정으로 한 두개의 소수의 분리막유니트가 투입된 현장에서는 별 문제가 없을 수 있으나 하수종말처리장과 같이 수 십, 수 백개의 분리막유니트가 투입된 현장에서는 막분리공법의 적용이 사실상 불가능하다.Membrane separation facilities applying the conventional separation membrane method have received a lot of attention due to the high and stable treatment efficiency, but has a natural problem of membrane blocking occurs during long-term operation. Conventionally, when a membrane blockage occurs, the membrane unit is taken out of the aerobic tank or membrane separation tank in operation and then immersed in a separate cleaning tank containing chemicals such as acids, alkalis, and oxidizers to eliminate the blockage, and then left for several hours. Solved. However, this is a process that requires a lot of manpower, time and cost, and may not be a problem at the site where one or two membrane units are put in. However, membrane separation at sites where dozens or hundreds of membrane units are put in, such as sewage treatment plants. The application of public law is virtually impossible.

본 발명은 고도처리용 막분리 장치를 운영함에 있어서, 막분리 과정에서 발생되는 필연적인 폐색을 용이하게 방지하여 할 수 있는 고도처리용 막분리장치의 폐색 방지장치를 제공하고자 한다.The present invention is to provide an apparatus for preventing the blockage of the advanced membrane separation apparatus that can easily prevent the inevitable occlusion generated in the membrane separation process in operating the advanced membrane separation apparatus.

본 발명은 상기의 목적을 달성하기 위하여 하수와 폐수를 처리하는 고도처리용 막분리 장치에 있어서, 미생물에 의해 탈질화가 일어나 원수와 반응조내의 기존 액체와의 혼합액내 질산성 질소를 질소가스로 전환하여 제거하는 무산소조; 상기 무산조로부터 유입된 혼합액내의 질소와 아질산성 질소를 질산화하고, 인과 인성분은 제거하는 호기조: 상기 호기조내에 설치되어 하수와 폐수를 입자크기에 따라 선택적으로 여과시키는 분리막유니트; 상기 호기조로부터 유입된 혼합액은 유리산소가 제거된 상태에서 질산성 질소와 미생물이 함유된 채로 내부반송펌프에 의해 상기 무산소조로 반송시키는 탈기조; 상기 분리막유니트에 연결되는 흡인라인; 상기 흡입라인에 연결되어 분리막유니트와 연통됨으로써 흡인압력에 의해 분리막에 유입된 혼합액을 흡인압력에 의해 고액분리시켜 외부로 처리수를 방출하는 흡인펌프; 상기 흡입라인에 설치되어 흡임펌프의 가동시 흡인라인으로 흐르는 처리수의 압력을 검출하는 차압계; 상기 흡인펌프와 연결되어 흡인펌프를 통해 고액분리된 처리수를 특정장소로 송출하는 처리수라인; 상기 처리수라인에 설치되어 처리수가 외부로 방출되는 것을 단속하는 처리수 개폐밸브; 상기 처리수라인에서 분기되는 역세액 공급라인; 상기 역세액 공급라인의 일측에 연결되는 역세액 공급탱크; 상기 역세액 공급라인에 설치되어 역세액이 역세액 공급탱크로 유입되는 것을 단속하는 역세액공급 개폐밸브; 상기 역세액 공급탱크와 분리막프레임장치 사이에 형성되는 역세액 주입라인; 상기 역세액 주입라인에 설치되어 역세액을 분리막유니트에 강제로 주입하는 역세펌프; 상기 역세펌프와 분리막유니트 사이에 설치되어 역세액의 주입을 단속하는 역세액주입 개폐밸브; 상기 역세역 공급탱크에 연결되어 일측에 구비된 세정제 이송펌프에 의해 세정제를 공급하는 세정제 저장탱크; 를 포함하여 이루어진 것을 특징으로 하는 고도처리용 막분리장치의 폐색 방지장치를 제공한다.In the present invention, in the advanced membrane separation apparatus for treating sewage and wastewater, in order to achieve the above object, denitrification occurs by microorganisms to convert nitrate nitrogen in the mixed solution of raw water and the existing liquid in the reaction tank to nitrogen gas. Anoxic bath to remove; An aerobic tank for nitrifying nitrogen and nitrite nitrogen in the mixed solution introduced from the anaerobic tank and removing phosphorous and phosphorus components: a separation membrane unit installed in the aerobic tank to selectively filter sewage and wastewater according to the particle size; A degassing tank for returning the mixed liquid introduced from the aerobic tank to the anoxic tank by an internal transfer pump while containing nitric acid nitrogen and microorganisms in a state where free oxygen is removed; A suction line connected to the separator unit; A suction pump connected to the suction line to communicate with the separator unit to solid-separate the mixed liquid introduced into the separator by suction pressure to discharge the treated water to the outside; A differential pressure gauge installed in the suction line and detecting a pressure of the treated water flowing into the suction line when the suction pump is operated; A treatment water line connected to the suction pump and sending the treated water separated through the suction pump to a specific place; A treatment water opening / closing valve installed in the treatment water line to control discharge of the treatment water to the outside; A backwash liquor supply line branched from the treated water line; A backwashing liquid supply tank connected to one side of the backwashing liquid supply line; A backwashing liquid supply opening / closing valve installed in the backwashing liquid supply line to control backwashing liquid flowing into the backwashing liquid supply tank; A backwashing liquid injection line formed between the backwashing liquid supply tank and the separator frame device; A backwash pump installed in the backwash solution injection line for forcibly injecting backwash solution into the membrane unit; A backwash liquid injection opening / closing valve installed between the backwash pump and the separation membrane unit to control the backwash liquid injection; A detergent storage tank connected to the backwashing supply tank and supplying a detergent by a cleaner transfer pump provided at one side; It provides a blockage preventing device of the membrane separation device for advanced processing, characterized in that consisting of.

삭제delete

이상에서와 같이 본 발명에 의하면, 고도처리용 막분리공장치의 폐색 방지장 치 및 방법을 이용함으로써 인력의 소요없이 전자동으로 하수, 폐수 등을 완벽히 고도처리하고 그 과정에서 발생될 수 있는 폐색을 간단히 방지하거나 애소함으로써 장치의 처리효율을 높임과 동시에 유지관리를 매우 용이하게 수행할 수 있다.As described above, according to the present invention, by fully using the blockage prevention device and method of the membrane processing device for advanced processing, fully automatic treatment of sewage, wastewater, etc. without the need of manpower, and simply blockages that may occur in the process. By preventing or appealing, the processing efficiency of the device can be increased and maintenance can be performed very easily.

본 발명에 따르면 높고 안정적인 처리효율을 가진 막분리공법의 운전에 있어 가장 큰 문제가 되는 분리막폐색을 해소하기 위해 분리막을 무인자동으로 역세 할 수 있는 것으로 PLC 판넬(29)의 조작을 통해 정기적으로 또는 비상시 자동역세를 실시함으로써 폐색을 예방 또는 해소할 수 있다.According to the present invention, the membrane can be backwashed automatically in order to solve the membrane blocking, which is the biggest problem in the operation of the membrane separation method with high and stable processing efficiency. Occupational automatic backwash can be used to prevent or eliminate occlusion.

이하, 본 발명의 바람직한 실시 예를 첨부된 도면을 참조하여 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

도 1은 본 발명에 대한 개념도로서, 막분리시설에 유입된 하수, 폐수 등의 원수는 침사조, 조대스크린조를 거쳐 유량조정조(110)로 유입된다. 유량조정조(110)로 유입된 원수는 유량조정조(110)에서 저류되었다가 일부 유량조정조(110)내에 설치된 원수이송펌프(112)에 의해 드럼스크린(120)을 거쳐 무산소조(130)로 이송되게 된다. 원수이송펌프(112)는 수중펌프로 그 가동 및 정지는 유량조정조(110)내 설치된 레벨스위치(도시되지 않음)에 의해 이뤄진다.1 is a conceptual diagram of the present invention, raw water, such as sewage and wastewater introduced into the membrane separation facility is introduced into the flow rate adjustment tank 110 through the settling tank, the coarse screen tank. The raw water introduced into the flow adjusting tank 110 is stored in the flow adjusting tank 110 and then transferred to the oxygen-free tank 130 through the drum screen 120 by the raw water feed pump 112 installed in the some flow adjusting tank 110. . The raw water feed pump 112 is operated by a submersible pump and stopped by a level switch (not shown) installed in the flow regulating tank 110.

유량조정조(110)내 레벨스위치는 저수위 스위치와 고수위 스위치로 나뉘는데 유량조정조(110)내 수위가 고수위 스위치까지 도달하게 되면 고수위 레벨스위치는 이를 감지, MCC 제어반(도시되지 않음)에 전기신호를 보내고 MCC 제어반에서 원수 이송펌프(112)로 다시 신호를 보내게 되어 원수이송펌프(112)가 가동되게 된다. 수위가 낮아져 저수위 스위치까지 도달하게 되면 원수이송펌프(112)는 다시 신호를 받아 가동을 멈추게 된다.The level switch in the flow adjusting tank 110 is divided into a low level switch and a high level switch. When the water level in the flow adjusting tank 110 reaches the high level switch, the high level level switch detects this and sends an electric signal to the MCC control panel (not shown). The control panel sends a signal back to the raw water feed pump 112 so that the raw water feed pump 112 is operated. When the water level is lowered to reach the low water level switch, the raw water feed pump 112 stops receiving the signal again.

유량조정조(110)에 유입된 원수내 함유되어 있는 고형물질이 가라앉아 유량조정조(110)내에 쌓이는 것을 방지하기 위해 유량조정조(110)내에 수중믹서(114)를 설치하여 원수를 교반한다.In order to prevent the solid matter contained in the raw water introduced into the flow adjusting tank 110 to sink and accumulate in the flow adjusting tank 110, an underwater mixer 114 is installed in the flow adjusting tank 110 to stir the raw water.

원수이송펌프(112)에 의해 이송되는 원수는 드럼스크린(120)을 거치게 되는데 이것은 원수내 함유된 머리카락이나 휴지조각 등의 미세한 협잡물을 제거할 수 있고 0.1~1㎜ 크기의 메쉬망을 장착하고 있다. 드럼스크린(120)은 슬러지농축저류조(240) 위에 설치되어 스크린에 걸린 협잡물이 바로 슬러지농축저류조(240)로 떨어지게 할 수 있다.The raw water transported by the raw water feed pump 112 passes through the drum screen 120, which can remove fine contaminants such as hair and tissue pieces contained in the raw water, and is equipped with a mesh network of 0.1-1 mm in size. . The drum screen 120 may be installed on the sludge concentrate storage tank 240 so that the contaminants caught on the screen may immediately fall into the sludge concentrate storage tank 240.

드럼스크린(120)은 유량조정조(110)내 원수이송펌프(112)가 작동될 때 같이 작동할 수 있도록 연동되어 있다. 드럼스크린(120)의 메쉬망을 통과한 원수는 분배조(122)를 거쳐 무산소조(130)와 혐기조(140)로 분할유입된다. 이 분할유입은 원수의 성상에 따라 분할비가 달라지는데 이때 원수성상에 따라 무산소조(130)로 100% 유입될 수도 있고 일정부분이 후단의 혐기조(140)로 분배될 수도 있으나 100% 혐기조(140)로 전량 유입되지는 않는다.The drum screen 120 is interlocked so as to operate together when the raw water feed pump 112 in the flow adjustment tank 110 is operated. The raw water passing through the mesh screen of the drum screen 120 is divided into the anaerobic tank 130 and the anaerobic tank 140 through the distribution tank 122. This split inflow is split ratio according to the nature of the raw water, at this time 100% may be introduced into the anaerobic tank 130, a portion may be distributed to the anaerobic tank 140 of the rear end, but 100% of the anaerobic tank (140) It does not flow in.

무산소조(130)에선 미생물에 의해 탈질화가 일어나 원수와 반응조내 기존 액체와의 혼합액내 질산성 질소를 질소가스로 전환하여 제거한다. 무산소조(130)에는 원수와 후단의 탈기조(190)로부터 반송되는 반송액이 혼입되는데 혼합액내에 존재 하는 미생물 등의 고형물이 가라앉아 바닥에 쌓이지 않도록 무산소조(130)내에 수중믹서(132)를 설치한다.In the anoxic tank 130, denitrification is caused by microorganisms so that the nitrate nitrogen in the mixed solution of the raw water and the existing liquid in the reaction tank is converted to nitrogen gas and removed. In the anoxic tank 130, the conveying liquid conveyed from the raw water and the degassing tank 190 of the rear end is mixed, and an underwater mixer 132 is installed in the anoxic tank 130 so that solids such as microorganisms present in the mixed solution sink and do not accumulate on the floor. .

무산소조(130)내의 혼합액은 중력에 의해 후단의 혐기조(140)로 자연유하한다. 혐기조(140)에는 원수가 분할유입되는 경우 원수와 전단의 무산소조(130)로부터의 혼합액이 혼입된다. 혐기조내(140)에선 산소가 전혀 존재하지 않고 미생물의 세포로부터 인이 용출되는 현상이 일어난다. 혐기조(140)내에서도 미생물과 같은 고형물이 침전되는 것을 방지하기 위해 수중믹서(9)를 설치한다.The mixed liquid in the anaerobic tank 130 naturally falls into the anaerobic tank 140 at the rear end by gravity. In the anaerobic tank 140, when the raw water is split inflow, the mixed liquid from the raw water and the anoxic tank 130 of the front end is mixed. In the anaerobic tank 140, phosphorus is eluted from the cells of the microorganism without oxygen at all. In the anaerobic tank 140, an underwater mixer 9 is installed to prevent solids such as microorganisms from being precipitated.

혐기조(140)내 혼합액은 자연유하에 의해 다시 후단의 호기조(막분리조)(150)로 이송된다. 호기조(150)로 이송된 혼합액내 암모니아성 질소와 아질산성 질소는 미생물에 의해 질산성 질소로 질산화되고 혐기조(140)에서 방출된 인과 원수내 인성분은 호기조(150)에서 미생물이 과잉섭취함으로써 제거된다.The mixed liquid in the anaerobic tank 140 is transferred to the aerobic tank (membrane separation tank) 150 at the rear end by natural flow. The ammonia nitrogen and the nitrite nitrogen in the mixed solution transferred to the aerobic tank 150 are nitrated to nitrate nitrogen by the microorganisms and the phosphorus and phosphorus components in the raw water discharged from the anaerobic tank 140 are removed by the intake of the microorganisms in the aerobic tank 150. do.

BOD 성분인 용존유기물질은 전단의 무산소(130)와 혐기조(140)를 거치면서 일부 제거되나 제거되지 않고 호기조(150)로 유입된 용존유기물은 호기조(150)내에서 대부분 제거된다.Dissolved organic matter, which is a BOD component, is partially removed while passing through the anaerobic 130 and anaerobic tank 140 of the front end, but the dissolved organic matter introduced into the aerobic tank 150 is mostly removed in the aerobic tank 150.

용존유기물과 질소와 인이 제거된 처리수는 호기조(150)내 침지되어 있는 분리막유니트(160)를 통해 여과되어 시설 밖으로 배출된다. 분리막유니트(160)는 분리막과 분리막을 고정지지할 수 있는 분리막프레임으로 구성되어 있다. 분리막은 표면에 0.1~0.4㎛ 크기의 무수한 공극이 형성되어 있는데 이 공극을 통해 분리막 외부의 혼합액중 처리수는 유입되고 미생물 등의 고형물은 여과되게 된다.Dissolved organics and treated water from which nitrogen and phosphorus are removed are filtered through the membrane unit 160 immersed in the aerobic tank 150 and discharged out of the facility. The separator unit 160 is composed of a separator frame capable of fixing the separator and the separator. On the surface of the separator, countless pores of 0.1 ~ 0.4㎛ size are formed. Through these pores, the treated water in the mixed liquid outside the separator is introduced and solids such as microorganisms are filtered out.

분리막유니트(160)는 호기조(150) 외부에 설치되어 있는 흡인펌프(170)와 흡 인라인(L1)을 통해 상호 연통되어 연결되어 있는데, 흡인펌프(170)가 가동하게 되면 이와 연결된 분리막 내부에 진공압이 형성되게 되고 이 진공압이 드라이빙 포스(driving force)가 되어 분리막 외부의 혼합액 중 미생물 등의 고형물을 제외한 처리수가 공극을 통해 분리막 내부로 유입되게 한다. 이때 미생물 등의 고형물이 처리수의 흐름에 따라 분리막 표면으로 같이 이동하여 공극을 막는 폐색현상이 일어날 수 있는데 이를 방지하기 위하여 미생물의 호흡에 필요한 공기를 공급하는데 이용되는 브로아(180)를 분리막유니트(160) 하단의 산기관에 연결하여 공기를 공급함으로써 산기관으로부터 배출되는 공기가 상승하면서 발생하는 공기방울의 교란작용과 수류의 형성으로 고형물이 분리막표면으로 이동하여 부착하려는 것을 방해하도록 한다.The membrane unit 160 is connected to and connected to each other through the suction pump 170 installed on the outside of the exhalation tank 150 and the suction inline (L1). Pneumatic pressure is formed and this vacuum pressure is a driving force to allow the treated water excluding the solids such as microorganisms in the mixed liquid outside the separator to be introduced into the separator through the pores. At this time, solids such as microorganisms may move together to the surface of the membrane according to the flow of treated water, and thus blockage may occur to prevent voids. In order to prevent this, the broa 180 used to supply air for breathing of the microorganism may be separated from the membrane unit ( 160) By supplying air by connecting to the diffuser at the bottom, disturbing action of air bubbles generated by rising air discharged from the diffuser and formation of water flow prevent the solids from moving to the membrane surface and attaching.

분리막내부로 유입된 처리수는 흡인라인(L1)을 따라 흡인펌프(160)를 거쳐 처리수라인(L2)을 통해 외부로 배출되게 된다.The treated water introduced into the separator is discharged to the outside through the treated water line (L2) through the suction pump 160 along the suction line (L1).

흡인펌프(170)는 호기조(150)내 설치된 레벨스위치에 의해 전기적 신호를 받고 작동하게 된다. 호기조(150)내 레벨스위치는 고수위 스위치와 저수위 스위치로 구분되는데 수위가 낮아져 저수위 스위치에 도달하게 되면 저수위 스위치는 이를 감지, 컨트롤러에 신호를 보내고 이는 다시 흡인펌프(170)에 전달되어 흡인펌프(170)가 가동되게 된다. 반대로 수위가 높아져 고수위 스위치에 도달하게 되면 흡인펌프(170)는 정지되게 된다.The suction pump 170 is operated by receiving an electrical signal by the level switch installed in the exhalation tank 150. The level switch in the aerobic tank 150 is divided into a high water level switch and a low water level switch. When the water level is lowered and reaches the low water level switch, the low water level switch detects this and sends a signal to the controller, which is then transmitted to the suction pump 170 and the suction pump 170. ) Will be activated. On the contrary, when the water level is increased to reach the high water level switch, the suction pump 170 is stopped.

분리막의 폐색을 방지하기 위하여 흡인펌프(170)를 간헐운전한다. 즉, 흡인펌프(170)를 수 분간 가동, 다시 수 분간 정지시킴으로써 분리막의 폐색을 방지할 수 있다.The suction pump 170 is intermittently operated to prevent the blockage of the separator. That is, clogging of the separator can be prevented by operating the suction pump 170 for several minutes and stopping again for several minutes.

호기조(150)내 수위가 저수위일 경우 흡인펌프(170)가 정지하고 있는 동안 브로아(180)는 가동과 정지를 반복하는 간헐운전을 할 수 있다.When the water level in the aeration tank 150 is a low level, the broa 180 may perform an intermittent operation of repeating the operation and the stop while the suction pump 170 is stopped.

외부로 배출되지 않고 호기조(150) 내부에 잔류하는 혼합액은 자연유하에 의해 후단의 탈기조(190)로 이송되게 된다. 탈기조(190)내에 유입된 혼합액이 함유하고 있는 유리산소는 탈기조(190)에서 대기중으로 휘산되게 된다.The mixed liquid remaining in the aeration tank 150 without being discharged to the outside is transferred to the degassing tank 190 at the rear end by natural flow. Free oxygen contained in the mixed liquid introduced into the degassing tank 190 is volatilized to the atmosphere in the degassing tank 190.

탈기조(190)내 혼합액은 유리산소가 제거된 상태에서 질산성 질소(NO3-)와 미생물이 함유된 채로 탈기조(190)내에 설치된 내부반송펌프(192)에 의해 전단의 무산소조(130)로 반송되게 된다. 반송되는 과정에서 혼합액내 존재하는 머리카락과 같은 미세 협잡물을 제거하기 위해 혼합액은 드럼스크린(120)을 거쳐 무산소조(130)로 유입되게 된다.The mixed liquid in the degassing tank 190 is transferred to the anoxic tank 130 at the front end by an internal transfer pump 192 installed in the degassing tank 190 with nitric acid nitrogen (NO3-) and microorganisms in the state where free oxygen is removed. Will be returned. In order to remove fine contaminants such as hair present in the mixed solution in the conveyed process, the mixed solution is introduced into the oxygen-free tank 130 through the drum screen 120.

본 발명의 장치 및 방법에 따라 장기간 운영중 발생할 수 있는 분리막의 폐색현상을 방지 또는 해소하기 위해서 자동역세가 실시된다.Automatic backwashing is performed in order to prevent or eliminate obstruction of the membrane which may occur during long term operation according to the apparatus and method of the present invention.

컨트롤러(C)에 역세주기를 입력하여 수 일에 1회 이상 자동역세가 실시되도록 설정한다. 자동역세시 먼저 흡인펌프(170)와 브로아(180)가 가동되는 상태에서 처리수라인(L2)의 처리수개폐밸브(162)가 닫히고 역세액 공급라인(L3) 라인에 설치된 역세액 공급개폐밸브(164)가 열리면서 처리수가 역세액 공급탱크(200)로 이송된다.A backwash cycle is entered into the controller C to set the automatic backwashing at least once every few days. At the time of automatic backwashing, the treated water opening / closing valve 162 of the treated water line L2 is closed while the suction pump 170 and the broa 180 are operated, and the backwash liquid supply opening and closing valve installed in the backwashing liquid supply line L3 line. 164 is opened and the treated water is transferred to the backwash liquid supply tank 200.

역세액 공급탱크(200)내에 일정량의 처리수가 공급이 되면 이를 역세액 공급탱크(200)내 설치된 역세액 공급탱크 교반기(20)가 감지하여 전기신호를 컨트롤 러(C)에 전달하고 이는 다시 흡인펌프(170)로 전달되어 흡인펌프(170)를 중지시킨다. 이후 역세액 공급탱크 일측에 설치된 세정제 저장탱크(210)의 세정제를 세정제 이송펌프(212)에 의하여 역세액 공급탱크(200)로 일정시간 이송시킨다.When a certain amount of treated water is supplied into the backwashing liquid supply tank 200, the backwashing liquid supply tank stirrer 20 installed in the backwashing liquid supply tank 200 detects and transmits an electric signal to the controller C, which is sucked again. The pump 170 is delivered to stop the suction pump 170. Thereafter, the detergent of the detergent storage tank 210 installed at one side of the backwash liquid supply tank is transferred to the backwash liquid supply tank 200 by the detergent transfer pump 212 for a predetermined time.

역세액 공급탱크(200)내에서 처리수와 세정제를 혼합하여 만든 역세액이 역세펌프(204)의 강제적인 펌핑에 의해 역새액 공급탱크(200)와 역세액 주입라인(L4)을 통해 역세액 주입개폐밸브(206)가 열리면서 분리막유니트(160)로 유입되어 분리막 내부로부터 공극을 거쳐 분리막 외부로 빠져 나가면서 분리막 표면에 침적된 폐색물질이 분리막 표면으로부터 탈착되면서 폐색이 해소된다. 1주일에 1회 이상 실시하는 정기적인 역세와는 별도로 흡인라인(L1)에 설치된 차압계(220)가 분리막의 폐색이 진행됨으로써 증가되는 차압이 미리 설정해 놓은 일정 수준의 차압 이상으로 상승할 때 이를 컨트롤러(C)에 전기신호를 보내어 상기 전술한 과정과 마찬가지로 역세가 일어나도록 할 수 있다.The backwashing liquid made by mixing the treated water and the cleaning agent in the backwashing liquid supply tank 200 is backwashed through the backwashing liquid supply tank 200 and the backwashing liquid injection line L4 by the forced pumping of the backwashing pump 204. As the injection opening / closing valve 206 opens and enters the membrane unit 160 and exits through the pores from the inside of the separator and exits to the outside of the separator, the blockage material deposited on the membrane surface is detached from the membrane surface to eliminate the blockage. Apart from the regular backwash, which is conducted at least once a week, when the differential pressure gauge 220 installed in the suction line L1 rises above the predetermined differential pressure level, which is increased due to the blockage of the separator, the controller An electrical signal can be sent to (C) to cause a backwash, similar to the above-described process.

일주일에 1회 이상 실시하는 역세와는 달리 2~3개월에 1회 이상 In-line세정(CIP; Cleaning In Place)을 실시하는데 이는 다른 과정은 역세정과 동일하나 세정제 이송펌프(212)의 작동시간이 역세정보다 더욱 길어 역세액 공급탱크(200)내 역세액의 농도를 더욱 높게 한다는 점이 다르다. 위와 같은 역세정과 In-line 세정을 통해 분리막유니트(160)의 폐색을 완벽히 방지 또는 해소할 수 있다.Unlike backwashing at least once a week, in-line cleaning (CIP; cleaning in place) is performed at least once every two to three months. The other process is the same as backwashing, but the operation of the cleaning agent transfer pump 212 is performed. The difference is that the time is longer than the backwashing information, so that the concentration of backwashing liquid in the backwashing liquid supply tank 200 is higher. Through back-washing and in-line cleaning as described above, the blockage of the membrane unit 160 may be completely prevented or eliminated.

원수농도의 변화에 대비하여 인을 완벽하게 제거하기 위해 응집제 주입탱크를 별도로 설치, 응집제를 반응조내에 투입함으로써 인을 응집, 제거할 수 있다.In order to completely remove phosphorus in preparation for the change of raw water concentration, a flocculant injection tank may be separately installed and the coagulant may be added to the reaction tank to aggregate and remove the phosphorus.

상기의 전체 과정이 원활하게 운전되고 있는지 확인하기 위해 현장의 가동상 황을 인터넷으로 확인할 수 있도록 현장의 기기와 MCC 제어반 그리고 컨트롤러를 인터넷과 같은 통신회선과 연결함으로써 사무실이나 일반 가정에서도 현장 상황을 확인할 수 있다. In order to check whether the entire process is running smoothly, the field equipment, MCC control panel, and controller are connected to communication lines such as the Internet so that the operation status of the site can be checked on the Internet. Can be.

도 1은 본 발명에 따른 고도처리용 막분리 장치의 역세 방지장치 및 방법을 나타낸 것이다.Figure 1 shows a backwash prevention device and method of a highly advanced membrane separation apparatus according to the present invention.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

110 : 유량조정조 112 : 원수이송펌프110: flow rate adjustment tank 112: raw water feed pump

120 : 드럼스크린 122 : 분배조120: drum screen 122: distribution tank

130 : 무산소조 140 : 혐기조130: anaerobic tank 140: anaerobic tank

150 : 호기조 160 : 분리막유니트150: aerobic tank 160: membrane unit

162 : 처리수 개폐밸브 164 : 역세액 공급개폐밸브162: treatment water opening and closing valve 164: backwash liquid supply opening and closing valve

170 : 흡인펌프 180 : 브로와170: suction pump 180: Brow

190 : 탈기조 200 : 역세액 공급탱크190: degassing tank 200: backwash liquid supply tank

204 : 역세펌프 206 : 역세액 주입개폐밸브204: backwash pump 206: backwash liquid injection opening and closing valve

210 : 세정제 저장탱크 220 : 차압계210: detergent storage tank 220: differential pressure gauge

L1 : 흡인라인 L2 : 처리수라인L1: Suction line L2: Treatment water line

L3 : 역세액공급라인 L4 : 역세액 주입라인 L3: Backwashing liquid supply line L4: Backwashing liquid injection line

Claims (3)

하수와 폐수를 처리하는 고도처리용 막분리 장치에 있어서,In the advanced membrane separation apparatus for treating sewage and wastewater, 미생물에 의해 탈질화가 일어나 원수와 반응조내의 기존 액체와의 혼합액내 질산성 질소를 질소가스로 전환하여 제거하는 무산소조(130);An anoxic tank 130 in which denitrification occurs by the microorganisms, thereby converting and removing nitrate nitrogen in the mixed solution of the raw water and the existing liquid in the reaction tank to nitrogen gas; 상기 무산조로부터 유입된 혼합액내의 질소와 아질산성 질소를 질산화하고, 인과 인성분은 제거하는 호기조(150):An aerobic tank 150 which nitrates nitrogen and nitrite nitrogen in the mixed solution introduced from the anoxic tank and removes phosphorus and phosphorus components: 상기 호기조내에 설치되어 하수와 폐수를 입자크기에 따라 선택적으로 여과시키는 분리막유니트(160);A separation membrane unit (160) installed in the aerobic tank to selectively filter sewage and wastewater according to the particle size; 상기 호기조로부터 유입된 혼합액은 유리산소가 제거된 상태에서 질산성 질소와 미생물이 함유된 채로 내부반송펌프에 의해 상기 무산소조로 반송시키는 탈기조(190);A degassing tank 190 for returning the mixed liquid introduced from the aerobic tank to the anoxic tank by an internal transfer pump while containing nitrate nitrogen and microorganisms in a state where free oxygen is removed; 상기 분리막유니트에 연결되는 흡인라인(L1);A suction line (L1) connected to the separator unit; 상기 흡입라인에 연결되어 분리막유니트와 연통됨으로써 흡인압력에 의해 분리막에 유입된 혼합액을 흡인압력에 의해 고액분리시켜 외부로 처리수를 방출하는 흡인펌프(170);A suction pump 170 connected to the suction line so as to communicate with the separation membrane unit to solid-liquidly separate the mixed liquid introduced into the separation membrane by the suction pressure by the suction pressure to discharge the treated water to the outside; 상기 흡입라인에 설치되어 흡임펌프의 가동시 흡인라인으로 흐르는 처리수의 압력을 검출하는 차압계(220);A differential pressure gauge (220) installed in the suction line and detecting a pressure of the treated water flowing into the suction line when the suction pump is operated; 상기 흡인펌프와 연결되어 흡인펌프를 통해 고액분리된 처리수를 특정장소로 송출하는 처리수라인(L2);A treated water line (L2) connected to the suction pump and sending the treated water separated into a liquid through a suction pump to a specific place; 상기 처리수라인에 설치되어 처리수가 외부로 방출되는 것을 단속하는 처리수 개폐밸브(162);A treatment water opening / closing valve (162) installed in the treatment water line to control discharge of the treatment water to the outside; 상기 처리수라인에서 분기되는 역세액 공급라인(L3);A backwashing liquid supply line L3 branched from the treated water line; 상기 역세액 공급라인의 일측에 연결되는 역세액 공급탱크(200);A backwashing liquid supply tank 200 connected to one side of the backwashing liquid supply line; 상기 역세액 공급라인에 설치되어 역세액이 역세액 공급탱크로 유입되는 것을 단속하는 역세액공급 개폐밸브(164);A backwashing liquid supply opening / closing valve 164 installed in the backwashing liquid supply line to control backwashing liquid flowing into the backwashing liquid supply tank; 상기 역세액 공급탱크와 분리막프레임장치 사이에 형성되는 역세액 주입라인(L4);A backwashing liquid injection line (L4) formed between the backwashing liquid supply tank and the separator frame device; 상기 역세액 주입라인에 설치되어 역세액을 분리막유니트에 강제로 주입하는 역세펌프(204);A backwash pump 204 installed in the backwash solution injection line for forcibly injecting the backwash solution into the membrane unit; 상기 역세펌프와 분리막유니트 사이에 설치되어 역세액의 주입을 단속하는 역세액주입 개폐밸브(206); A backwash solution injection opening / closing valve (206) interposed between the backwash pump and the separation membrane unit for intermittent injection of backwash solution; 상기 역세역 공급탱크에 연결되어 일측에 구비된 세정제 이송펌프에 의해 세정제를 공급하는 세정제 저장탱크(210);A detergent storage tank 210 connected to the backwashing supply tank and supplying a cleaner by a cleaner transfer pump provided at one side; 를 포함하여 이루어진 것을 특징으로 하는 고도처리용 막분리장치의 폐색 방지장치.Occlusion prevention device of the membrane separation device for advanced processing, characterized in that consisting of. 삭제delete 삭제delete
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KR101485500B1 (en) 2014-11-04 2015-01-28 (주)이앤이솔루션 Device and method by the membrane separator activated advanced oxidation process

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KR20030042133A (en) * 2001-11-21 2003-05-28 현대엔지니어링 주식회사 Method and system for cleaning membrane submersed in reactor
KR200393666Y1 (en) * 2005-06-02 2005-08-25 대한통운 주식회사 Apparatus for automatic cleaning of separation membrane in dipping type membrane separation system

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KR200393666Y1 (en) * 2005-06-02 2005-08-25 대한통운 주식회사 Apparatus for automatic cleaning of separation membrane in dipping type membrane separation system

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