KR100244536B1 - Device for removing high concentration of organism and nitrogen using biological membrane - Google Patents

Device for removing high concentration of organism and nitrogen using biological membrane Download PDF

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KR100244536B1
KR100244536B1 KR1019970047385A KR19970047385A KR100244536B1 KR 100244536 B1 KR100244536 B1 KR 100244536B1 KR 1019970047385 A KR1019970047385 A KR 1019970047385A KR 19970047385 A KR19970047385 A KR 19970047385A KR 100244536 B1 KR100244536 B1 KR 100244536B1
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filtration phase
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organic matter
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KR19990025672A (en
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정보림
정인
장덕
서성철
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김영진
주식회사진도
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    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Abstract

본 발명은 생물막을 이용한 고농도 유기물 및 질소제거장치에 관한 것으로, 고농도 유기성폐수가 유입관(15)을 경유하여 유입되며, 크로스플로우 모듈(7) 및 고농도의 미생물이 충전되어 유기물제거 및 탈질된 후 기체와 액체 및 고체가 분리되어 유출관(16)으로 배출되는 혐기여과상(1)과; 상기 혐기여과상(1)의 배출관(16)을 통해 직렬로 배치되어 배출되는 폐수가 내부로 유입되며, 구형여재(8)를 통과하는 유출수에 블로어(9)로 반응공기를 주입하여 잔류유기물과 입자상물질을 제거함과 아울러 질산화가 이루어 지도록 하는 호기여과상(2)과; 이 호기여과상(2)의 유출수가 내부로 유입되어 일부는 저류되고, 질산화된 처리수는 혐기여과상(1)으로 재순환되는 처리수조(3)로 굿어되어, 빠른 선속도에서도 기ㆍ액ㆍ고 분리가 뛰어나 처리효율이 안정적이고 추가적인 설비가 필요없이 폐수의 고도처리가 가능할 뿐만 아니라, 고농도의 폐수를 희석주입하는 효과를 얻을 수 있어 적용부하 범위가 넓다.The present invention relates to a high concentration organic matter and nitrogen removal device using a biofilm, the high concentration organic wastewater is introduced through the inlet pipe 15, the crossflow module (7) and the high concentration of microorganisms are filled to remove and denitrate the organic matter An anaerobic filtration phase (1) in which gas, liquid, and solid are separated and discharged to the outlet pipe (16); Wastewater disposed in series through the discharge pipe 16 of the anaerobic filtration phase 1 is introduced into the discharged water, and the reaction air is injected into the effluent passing through the spherical filter 8 through a blower 9 to the remaining organic matter. An aerobic filtration phase (2) to remove the particulate matter and to perform nitrification; The outflow water from the exhalation filtration phase 2 flows into the inside and is partially stored, and the nitrified treated water is treated with a treatment tank 3 that is recycled to the anaerobic filtration phase 1, and the gas, liquid and Excellent separation, stable treatment efficiency, high treatment of wastewater without the need for additional equipment, as well as dilution injection of high concentration of wastewater, wide range of applied load.

또, 독성물질을 함유한 폐수에도 탄력적으로 대응할 수 있으며 반응조의 용적을 줄일 수 있을 뿐만아니라 침전지를 생략하였으며 소요부지를 최소화하고 운전을 단순화하여 매우 경제적이다.In addition, it can flexibly respond to wastewater containing toxic substances, reduce the volume of reactor, omit sedimentation basin, minimize the required site and simplify operation, which is very economical.

Description

생물막을 이용한 고농도 유기물 및 질소제거장치High concentration organic matter and nitrogen removal device using biofilm

본 발명은 생물막을 이용한 고농도 유기물 및 질소제거장치에 관한 것으로, 더 상세하게는 고농도의 미생물을 보유할 수 있는 모듈로 충전된 혐기여과상과 구형(球形)의 여재로 충전된 호기여과상을 직렬로 연결하여 고농도 유기물제거와 고도처리를 동시에 수행할 수 있으며, 처리수 재순환에 의한 질소제거에 의해 그 처리효과를 증대시킬 수 있도록 발명된 것이다.The present invention relates to a high concentration organic matter and nitrogen removal apparatus using a biofilm, and more particularly, an anaerobic filtration phase filled with a module capable of retaining high concentrations of microorganisms and an aerobic filtration phase filled with a spherical filter medium in series. By connecting to the high concentration organic matter removal and advanced treatment can be carried out at the same time, it was invented to increase the treatment effect by removing nitrogen by recycling the treated water.

고농도유기성폐수의 처리장치는 혐기성소화조, 혐기성접촉공정, 상향류식 혐기성슬러지 블랭킷공정(UASB)등에 의해 일반적으로 처리되고 있다.The apparatus for treating highly concentrated organic wastewater is generally treated by an anaerobic digestion tank, an anaerobic contact process, an upflow anaerobic sludge blanket process (UASB), and the like.

이들 장치는 유입수의 농도가 낮거나 변화가 심할 경우 공정내의 미생물대사가 불안정하여 안정적인 처리효율을 확보하기 어렵다.These devices are difficult to secure stable treatment efficiency due to unstable microbial metabolism in the process when the influent concentration is low or the change is severe.

또, 고농도유기성폐수는 고농도의 유기질소 및 암모니아성 질소를 함유하는 경우가 대부분이어서 기존의 혐기성소화조 또는 호기성조로만은 질소를 제거할 수가 없다.In addition, most of the high concentration organic wastewater contains high concentrations of organic nitrogen and ammonia nitrogen, so the existing anaerobic digestion tank or aerobic tank cannot remove nitrogen.

질소제거를 위한 기존의 공정은 부유성장식공정으로 무산소 활성슬러지조와 호기성 활성슬러지조를 교대로 연결하여 호기성 활성슬러지조에서 무산소 활성슬러지조로 슬러지혼합액을 반송하여 질소를 제거한다.Existing process for nitrogen removal is a floating-growth process by alternately connecting anoxic activated sludge tank and aerobic activated sludge tank to remove nitrogen by returning the sludge mixture from aerobic activated sludge tank to anoxic activated sludge tank.

이러한 종래 방법들은 운전이 복잡하고 침전지에서 침전슬러지를 반송하고 슬러지혼합액을 내부반송하며 소요용적이 커서 부지사용면에서도 비경제적이다.These conventional methods are complicated to operate, convey the settling sludge from the settling basin, and convey the sludge mixture internally, and have a large volume, which is uneconomical in terms of site use.

또한, 긴 체류시간으로 인해 최종침전지에서 슬러지침강성의 확보가 어려우므로 후속처리공정이 추가적으로 필요하다.In addition, it is difficult to secure the sludge settling property in the final settling due to the long residence time, further needs a subsequent treatment process.

본 발명의 목적은 빠른 선속도에서도 기ㆍ액ㆍ고 분리가 뛰어나 처리효율이 안정적이며 폐수의 고도처리가 가능하도록 된 생물막을 이용한 고농도 유기물 및 질소제거장치를 제공하는 데 있다.An object of the present invention is to provide a high concentration organic matter and nitrogen removal apparatus using a biofilm that is excellent in separation of gas, liquid, and high even at a high linear speed, stable treatment efficiency and high processing of wastewater.

본 발명의 다른 목적은 그 적용부하 범위가 넓고 독성물질을 함유한 폐수에도 탄력적으로 대응하여 이용할 수 있도록 된 생물막을 이용한 고농도 유기물 및 질소제거장치를 제공하는 데 있다.Another object of the present invention is to provide a high concentration organic matter and nitrogen removal apparatus using a biofilm that can be used in a wide range of load range and elastically corresponding to wastewater containing toxic substances.

본 발명의 또 다른 목적은 반응조의 용적을 줄이고, 침전지를 설치하지 않고 공정을 간략화하여 설치 및 운전비를 절감할 수 있도록 한 생물막을 이용한 고농도 유기물 및 질소제거장치를 제공하는 데 있다.Another object of the present invention is to provide a high concentration organic matter and nitrogen removal apparatus using a biofilm to reduce the volume of the reaction tank, simplify the process without installing the settling basin to reduce the installation and operating costs.

제1도는 본 발명에 따른 생물막시스템의 개략도.1 is a schematic diagram of a biofilm system according to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 혐기여과상 2 : 호기여과상1: Anaerobic Filtration 2: Aerobic Filtration

3 : 처리수조 7 : 크로스플로우 모듈3: treatment tank 7: crossflow module

8 : 구형여재 9 : 블로어8: spherical filter material 9: blower

18 : 처리수 재순환관18: treated water recycle pipe

이러한 본 발명의 목적은 고농도 유기성폐수가 유입관(15)을 경유하여 유입되며, 크로스플로우 모듈(7) 및 고농도의 미생물이 충전되어 유기물제거 및 탈질된후 기체와 액체 및 고체가 분리되어 유출관(16)으로 배출되는 혐기여과상(1)과; 상기 혐기여과상(1)의 배출관(16)을 통해 직렬로 배치되어 배출되는 폐수가 내부로 유입되며, 구형여재(8)를 통과하는 유출수에 블로어(9)로 반응공기를 주입하여 잔류유기물과 입자상물질을 제거함과 아울러 질산화가 이루어 지도록 하는 호기여과상(2)과; 이 호기여과상(2)의 유출수가 내부로 유입되어 일부는 저류되고, 질산화된 처리수는 혐기여과상(1)으로 재순환되는 처리수조(3)로 구성되는 것에 의해 달성된다.The purpose of the present invention is the high concentration of organic wastewater is introduced through the inlet pipe 15, the crossflow module 7 and the high concentration of microorganisms are filled with organic matter is removed and denitrated, the gas and liquid and solids are separated outflow pipe Anaerobic filtration phase (1) discharged to (16); Wastewater disposed in series through the discharge pipe 16 of the anaerobic filtration phase 1 is introduced into the discharged water, and the reaction air is injected into the effluent passing through the spherical filter 8 through a blower 9 to the remaining organic matter. An aerobic filtration phase (2) to remove the particulate matter and to perform nitrification; The outflow water of this expiratory filter phase 2 flows into the inside, and a part of it is stored, and the nitrified treated water consists of the treatment water tank 3 recycled to the anaerobic filtration phase 1.

따라서, 플라스틱재질의 크로스플로우(cross flow) 모듈을 충전한 혐기여과상(1)과 구형여재(8)를 충전한 호기여과상(2)으로 구성되고, 호기여과상(2)의 처리수를 혐기여과상(1)으로 재순환하여 고농도 유기물과 질소를 생물막을 이용하여 동시에 제거하는 것이다.Therefore, it consists of the anaerobic filtration phase (1) which filled the crossflow module of plastic material, and the aerobic filtration phase (2) which filled the spherical filter material (8), and treated water of the aerobic filtration phase (2). By recycling to an anaerobic filtration phase (1), high concentrations of organic matter and nitrogen are simultaneously removed using a biofilm.

크로스플로우 모듈을 60%내외로 충전한 혐기여과상(1)은 고농도의 미생물의 확보가 가능하고 기체ㆍ액체ㆍ고체 분릭(기ㆍ액ㆍ고 분리)가 뛰어나 부하변동에 매우 강하므로, 안정적인 처리효율을 얻을 수 있다.The anaerobic filtration phase (1) filled with about 60% of the crossflow module can secure high concentrations of microorganisms and has excellent gas, liquid, and solid separation (gas, liquid, and high separation), which is very resistant to load fluctuations. Efficiency can be obtained.

또한, 혐기여과상(1)내의 휘발산의 분포에 착안하여 휘발산농도가 가장 높은 혐기여과상(1) 하부에 질산화된 호기여과상 처리수만을 목표 질소제거효율에 따라 재순환함으로써 질소제거시 필요한 외부탄소원의 첨가는 물론이고 미생물슬러지의 반송없이 질산화처리수의 탈질을 완벽히 수행하는 장점을 가지고 있다.In addition, focusing on the distribution of volatile acids in the anaerobic filtration phase (1), only the nitrified aerobic filtration water treated in the lower portion of the anaerobic filtration phase (1) having the highest volatile acid concentration is recycled according to the target nitrogen removal efficiency. As well as the addition of an external carbon source, it has the advantage of performing denitrification of the nitrified water completely without the return of microbial sludge.

재순환에 의해 혐기여과상내의 선속도는 증가하더라도 충전모듈인 크로스플로우 모듈의 원활한 기ㆍ액ㆍ고 분리로 운전이 원활하게 이루어 진다.Although the linear velocity in the anaerobic filtration increases due to recirculation, the operation is smoothly performed by the separation of the gas, liquid, and high solids of the crossflow module, the filling module.

한편, 입경 3~5mm 구형여재(8)를 충전한 호기여과상(2)은, 질산화시 종속영양미생물과 독립영양미생물이 경쟁관계에 있으므로, 플러그흐름을 유지하도록 하여 유기물제거에 관여하는 종속영양미생물과 질산화에 관여하는 독립영양미생물을 단일반응조내에서 이원화하여 유기물제거와 질산화가 동시에 수행되는 것이다.On the other hand, the aerobic filtration phase (2) filled with a spherical filter with a particle diameter of 3 to 5 mm (8) has a heterotrophic nutrient that is involved in organic matter removal by maintaining a plug flow because the heterotrophic microorganism and the independent nutrient microorganism are in competition with each other during nitrification. Independent nutrient microorganisms involved in microbial and nitrification are dualized in a single reactor to remove organic matter and nitrify at the same time.

그리고, 호기여과상(2)는 하향류흐름 방식을 채택하여 여층이 팽창하는 상향류흐름보다 여재간의 공극을 일정하게 유지시켜 SS제거효율을 90%이상을 유지할 수 있는 것이다.In addition, the aerobic filtration phase (2) can maintain the SS removal efficiency more than 90% by maintaining a constant gap between the media than the upflow flow of the filtration layer by adopting a downflow flow method.

이러한 본 발명의 시스템은 최종침전지가 필요없이 부유성장식공정의 심각한 문제점인 침전지침강성문제를 근본적으로 해소하였고, COD 2,000~15,000mg/L와 TKN(total Kjeldahl nitrogen) 특히 암모니아성 질소 1,000mg/L이하의 유기성폐수를 혐기여과상 부하 10kgCOD/㎥/일 이내 및 호기성여과상 부하 2kgN/㎥/일 이내로 하여 COD 및 입자상물지제거효율 99% 수준, 질소제거효율 75%이상(재순환율 300%기준)으로 처리할 수 있는 것이다.The system of the present invention fundamentally solved the sedimentation stiffness problem, which is a serious problem of the floating growth process without the need for final settling, and COD 2,000-15,000mg / L and TKN (total Kjeldahl nitrogen), especially ammonia nitrogen 1,000mg / L Organic wastewater below 10kgCOD / ㎥ / day for anaerobic filtration and within 2kgN / ㎥ / day for aerobic filtration, 99% of COD and particulate matter removal efficiency and more than 75% of nitrogen removal efficiency (based on 300% recycling rate) It can be handled with

또한, 본 발명은 고효율유기물, 입자상물질제거와 고효율질소제거를 동시에 수행하는 공정으로 질소제거를 위한 외부탄소원의 주입이 필요없으며 침전지와 여러단의 반응조가 불필요하고 침전슬러지의 반송과 슬러지혼합액의 반송이 필요없어 운전이 간단하고 부대설비를 줄일 수 있으므로 소요부지를 대폭적으로 줄일 수 있어 경제적인 면에서 매우 유리하다.In addition, the present invention is a process for simultaneously removing high-efficiency organic matter, particulate matter and high-efficiency nitrogen removal, does not require the injection of an external carbon source for nitrogen removal, and does not require the settling basin and multiple stage reaction tanks, the return of the settling sludge and the return of the sludge mixture It is very economically advantageous since it can simplify the operation and reduce the additional equipment because it is not necessary.

그리고, 재순환에 의해 고농도의 질소가 함유된 폐수의 경우 희석에 의한 유입질소농도의 저감효과가 있다.In addition, in the case of wastewater containing high concentration of nitrogen by recycling, the inflow nitrogen concentration is reduced by dilution.

일반적으로 암모니아성 질소농도가 높을 경우 유리암모니아에 의한 저해가 심하게 발생하는데 본 발명은 재순환에 의한 암모니아성 질소의 농도를 저감시키므로 유리암모니아의 독성을 완화할 수 있다.In general, when ammonia nitrogen concentration is high, inhibition by free ammonia occurs severely, but the present invention reduces the concentration of ammonia nitrogen by recycling, thereby mitigating the toxicity of free ammonia.

따라서, 처리효율의 신뢰도가 높고 운전이 용이하여 다양한 농도범위의 폐수에 안정적으로 적용할 수 있다.Therefore, the reliability of the treatment efficiency is high and the operation is easy, so that it can be stably applied to the wastewater of various concentration ranges.

이하 본 발명의 바람직한 실시예를 첨부도면에 의해 상세히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail by the accompanying drawings.

도 1은 본 발명의 장치를 개략도로 도시한 것으로, 혐기여과상(1)과 직렬로 배치된 호기여과상(2)에서 처리된 처리수가 일부는 처리수조(3)에 저류되고, 질산화된 처리수는 혐기여과상(1)으로 재순환되는 기본적인 장치의 흐름을 볼 수 있다.1 shows a schematic view of the apparatus of the present invention, in which some of the treated water treated in the aerobic filtration bed 2 arranged in series with the anaerobic filtration bed 1 is stored in the treatment tank 3 and the nitrified treatment The number can be seen in the flow of the basic device recycled to the anaerobic filtration phase (1).

즉, 상기 혐기여과상(1)은 유출수위아래로 크로스플로우 모듈(7)을 60%내외로 충전하며 하부로 유입하여 상부로 유출되는 구조이다. 이 호기여과상(2)는 여재지지대로부터 대략 1~2m높이로 구형여재(8)를 채우고 여재지지대하부에는 역세척공기공급장치인 역세척산기장치(10)와 역세척수를 분사하는 노즐을 설치하며, 유출구와 역세척수공급구로 구성되어 있다.That is, the anaerobic filtration phase (1) has a structure that fills the crossflow module (7) to about 60% below the effluent level and flows into the bottom to flow out to the top. The exhalation filter (2) fills the spherical filter (8) at a height of approximately 1 to 2 m from the filter support, and a back washing machine (10), which is a backwashing air supply device, and a nozzle for spraying the backwash water are installed under the filter support. It consists of an outlet and a backwash water supply port.

상기 호기여과상(2)의 상부는 역세척배수구(6)와 역세척시기를 결정하는 레벨스위치(25)를 설치한다. 처리수조(3)는 처리수 재순환관(18)과 역세척수공급관(22)이 포함되며, 약품조(4)는 약품의 교반을 위해 임펠러(27)가 설치된다.The upper part of the exhalation filtration phase 2 is provided with a backwash drain 6 and a level switch 25 for determining the backwashing timing. The treatment water tank 3 includes a treatment water recycling pipe 18 and a backwash water supply pipe 22, and the chemical tank 4 is provided with an impeller 27 for stirring the medicine.

처리하고자 하는 고농도유기성폐수는 유입펌프(11)에 의해 유입관(15)을 경유하여 혐기여과상(1)의 하부로 유입된다.High concentration organic wastewater to be treated is introduced into the lower portion of the anaerobic filtration phase (1) via the inlet pipe (15) by the inflow pump (11).

혐기여과상(1)의 하부에는 고농도의 미생물이 축적되어 있어 폐수와 미생물과의 접촉이 원활하게 이루어 지며, 이 혐기여과상(1)의 하부를 거쳐 크로스플로우모듈(7)을 통과하게 되는데, 크로스플로우 모듈(7)은 폐수의 단회로를 방지하고 최대한 미생물과의 접촉기회를 증대시킨다.High concentration of microorganisms are accumulated in the lower part of the anaerobic filtration phase (1) to facilitate contact with the wastewater and microorganisms, and passes through the crossflow module (7) through the lower part of the anaerobic filtration phase (1). The crossflow module 7 prevents short circuits of the wastewater and increases contact with microorganisms as much as possible.

뿐만 아니라, 크로스플로우 모듈(7)에 의한 입체적인 폐수의 흐름에 의해 기ㆍ액ㆍ고 분리가 효과적으로 이루어 진다.In addition, gas, liquid, and solid separation are effectively performed by the flow of the three-dimensional wastewater by the crossflow module 7.

이러한 혐기여과상(1)을 거친 폐수는 유출관(16)을 통해 호기여과상(2)으로 유입된다.Wastewater that has passed through the anaerobic filtration phase (1) is introduced into the aerobic filtration phase (2) through the outlet pipe (16).

호기여과상(2)의 상부로 혐기여과상(1)의 유출수가 유입되면 구형여재(8)의 여층을 통과하는데, 호기여과상(2)은 블로어(9)에 의하여 반응공기가 주입되고 있으나, 호기여과상(2)의 특성상 플러그흐름이 유지된다.When the effluent of the anaerobic filtration phase (1) flows into the upper part of the aerobic filtration phase (2), it passes through the filter bed of the spherical filter (8). The aerobic filtration phase (2) is injected with the reaction air by the blower (9). The plug flow is maintained due to the nature of the aerobic filtration phase (2).

이때, 일반적으로 부유성장식의 경우 종속영양미생물의 활동이 왕성한 단일 반응조내에서는 질산화를 위한 독립영양미생물의 활동이 저하되는 단점을 가지고 있으므로, 본 발명의 호기여과상(2)에서는 플러그흐름을 유지할 수 있도록 하여 유기물의 농도가 높은 호기여과상(2)의 상부에서는 종속영양미생물이, 유기물농도가 낮아진 하부에서는 독립영양미생물이 부착되도록하므로써 단일반응조내에서 짧은 체류시간으로 유기물제거와 질산화를 동시에 수행할 수 있는 것이다.In this case, in the case of suspended growth, since the activity of the autotrophic microorganism for nitrification is lowered in a single reactor in which the heterotrophic microorganism is active, the aerobic filtration phase (2) of the present invention maintains the plug flow. The heterotrophic microorganism is attached at the upper part of the aerobic filtration phase (2) where the concentration of organic matter is high, and the independent nutritional microorganism is attached at the lower part of the organic concentration, so that organic matter removal and nitrification can be simultaneously performed in a single reactor with a short residence time. You can do it.

한편, 여층을 통과하는 폐수는 짧은 체류시간에서 유기물제거와 질산화가 수행되며 여재에 부착된 생물막의 입자상물질 포획능력에 의해 입자상물질 90%이상 제거된다.On the other hand, wastewater that passes through the filter bed is organically removed and nitrified in a short residence time, and more than 90% of the particulate matter is removed by the trapping ability of the biofilm attached to the filter medium.

호기여과상(2)은 여재에 부착된 생물막의 두께가 증가하거나 포획된 입자상 물질에 의해 손실수두가 발생한다. 손실수두의 증가로 인해 호기여과상(2)의 수위가 증가하면 레벨스위치(25)에서 그 수위를 감지하고 일정수위가 되면 자동적으로 역세척이 수행된다. 역세척은 먼저 블로어(9)가 공급하는 역세척공기를 역세척공기 공급관(21)을 통해 호기여과상(2)의 하부로 주입하여 공기에 의해서만 여재에 세척한다. 그 다음 단계로 처리수조(3)로부터 역세척수펌프(12)를 통해 역세척수를 하부로 공기와 동시에 주입하여 탈리된 생물학과 포획된 입자상물질을 역세척수배출구(6)로 배출한다.The aerobic filtration phase 2 causes loss heads due to the increase in the thickness of the biofilm attached to the media or trapped particulate matter. When the level of the aerobic filtration phase 2 increases due to the increase of the head of the loss, the level switch 25 detects the level and automatically backwashes when the level is reached. Backwashing is first injected into the lower portion of the aerobic filtration phase (2) through the backwashing air supply pipe (21) supplied by the blower (9) to be washed in the filter medium only by air. In the next step, the backwash water is injected from the treated water tank 3 through the backwash water pump 12 simultaneously with air to discharge the desorbed biological and trapped particulate matter to the backwash water outlet 6.

배출되는 역세척폐수는 역세척폐수 재순환관(18a)과 역세척재순환펌프(13a)를 통해 혐기여과상(1)으로 재순환된다.The discharged backwash wastewater is recycled to the anaerobic filtration phase (1) through the backwash wastewater recycle pipe (18a) and the backwash recycle pump (13a).

일반적인 부유성장식공정은 침전지에서 발생되는 폐슬러지를 농축하여 처리하는데 비해 본 발명의 시스템은 역세척폐수를 혐기여과상(1)로 재순환하므로써 공정을 단순화하고 공정의 운전면에서도 경제적이다.In general, the suspended growth process concentrates and treats the waste sludge generated in the sedimentation basin, while the system of the present invention simplifies the process by recycling the backwash wastewater into the anaerobic filtration phase (1) and is economical in terms of operation of the process.

호기여과상(2)에서 질산화를 수행할 때 질소 1mg당 알칼리도 7.14mgCaCO3/L가 소모된다.When nitrification is carried out in the aerobic filtration phase (2), an alkalinity of 7.14 mg CaCO 3 / L per mg of nitrogen is consumed.

혐기성여과상에서의 탈질시 알칼리도가 생성되나, 혐기여과상(1)에서 유출되는 호기여과상유입수의 알칼리도/질소비가 7.14이하일 경우에는 약품조(4)로부터 알칼리도를 공급한다. 주입약품으로는 NaHCO3또는 NaOH등을 사용한다. 약품은 약품주입펌프(14)를 통해 호기여과상(2)의 상부로 주입한다.Denitrification in anaerobic filtration produces alkalinity, but if alkalinity / nitrogen ratio of the aerobic filtration influent flowing out of anaerobic filtration (1) is less than 7.14, alkalinity is supplied from the chemical bath (4). For injection medicine, NaHCO 3 or NaOH should be used. The chemical is injected into the upper portion of the aerobic filtration phase (2) through the chemical injection pump (14).

호기여과상(2)의 유출수는 처리수조로 유입되는데, 처리수의 일부는 역세척수로 사용되며, 또 재순환율에 따라 혐기여과상(1)으로 재순환된다. 역세척수로의 사용은 역세척시 역세척수펌프(12)를 경유하여 호기여과상(2)의 하부로 유입된다.The effluent from the aerobic filtration phase (2) flows into the treatment tank, and part of the treatment water is used as backwash water, and is recycled to the anaerobic filtration phase (1) according to the recycling rate. The use of the backwash channel flows into the lower part of the aerobic filtration phase (2) via the backwash water pump (12) during backwashing.

재순환은 처리수 재순환펌프(13)를 통해 혐기여과상(1)의 유입위치로 재순환된다.Recirculation is recycled to the inlet of the anaerobic filtration phase (1) via the treated water recycle pump (13).

호기성여과상(2)의 처리수는 질산화가 완료된 상태이므로, 혐기여과상(1)의 하부로 고농도 유기성폐수와 같이 유입되어 탈질이 수행된다.Since the treated water of the aerobic filtration phase (2) is nitrification is completed, the denitrification is carried out to the lower portion of the anaerobic filtration phase (1) as a high concentration of organic wastewater.

이때, 탈질시에는 탄소원으로 혐기성여과상(1)하부에서 생성되는 휘발산을 이용하며 탈질시 알칼리도가 생성되어 혐기여과상(1)의 휘발산생성에 의핸 pH저하를 감소시키는 장점도 있다.At this time, when denitrification, the use of volatile acid generated in the lower portion of the anaerobic filtration phase (1) as a carbon source and alkalinity is generated during denitrification, thereby reducing the pH decrease by volatilization of the anaerobic filtration phase (1).

뿐만 아니라 재순환은 유입수의 농도가 지나치게 높을 경우에도 매우 효과적이다. 즉 유기물의 농도가 높거나 암모니아성 질소의 농도가 높아 저해를 일으키는 경우에 처리수 재순환에 의해 농도를 희석시킬 수 있다.Recirculation is also very effective when the concentration of influent is too high. In other words, when the concentration of organic matter is high or the concentration of ammonia nitrogen is high, the concentration can be diluted by recycling the treated water.

아래 표는 처리수의 순환비율에 따른 전체 제거효율을 실시예로 얻은 것이다.The table below shows the total removal efficiency according to the circulation rate of the treated water as an example.

본 발명의 생물막에 의한 고농도유기물 및 질소 동시제거 시스템 처리효과의 예는 다음과 같다.Examples of the treatment effect of high concentration organic matter and nitrogen removal system by the biofilm of the present invention are as follows.

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이상에서 설명한 바와 같은 본 발명의 혐기호기생물막장치는 첫째, 혐기성여과상의 크로스플로우 모듈이 고농도의 미생물을 확보하며 빠른 선속도에서 기ㆍ액ㆍ고 분리가 뛰어나 처리효율이 안정적이다.Anaerobic aerobic membrane device of the present invention as described above, First, the crossflow module of the anaerobic filtration ensures a high concentration of microorganisms, and excellent separation of gas, liquid, high at a high linear velocity, stable processing efficiency.

둘째, 구형여재(8)를 충전한 호기여과상(2)도 입자상물질제거 뿐만 아니라 고효율의 유기물제거가 질산화를 동시에 수행하므로써 추가적인 설비가 필요없이 폐수의 고도처리가 가능하다.Second, the aerobic filtration phase (2) filled with the spherical filter material (8) can also be highly advanced treatment of wastewater without the need for additional equipment by removing the particulate matter as well as high-efficiency organic matter removal at the same time.

셋째, 본 발명은 처리수를 재순환하므로써 고농도의 폐수를 희석주입하는 효과를 얻을 수 있어 적용부하 범위가 넓다.Third, the present invention can obtain the effect of diluting high concentration of wastewater by recycling the treated water, so that the application load range is wide.

넷째, 독성물질을 함유한 폐수에도 탄력적으로 대응할 수 있다.Fourth, it is possible to respond flexibly to wastewater containing toxic substances.

다섯째, 고효율로 유기물과 질소를 제거하기 때문에 반응조의 용적을 줄일 수 있을 뿐만 아니라 침전지를 생략하였으며 역세척슬러지를 혐기여과상로 반송하여 처리하므로써 공정을 간략화하여 소요부지를 최소화하고 운전을 단순화하였다.Fifth, the removal of organic matter and nitrogen with high efficiency not only reduced the volume of the reactor, but also omitted the sedimentation basin and transported the backwash sludge to the anaerobic filter to simplify the process and minimize the required site.

여섯째, 종래의 기술에 의한 유기물 및 질소제거시스템에서 요구하는 소요부지의 약 1/2이하로 대폭 축소할 수 있어 매우 경제적이다.Sixth, it is very economical because it can be greatly reduced to about 1/2 or less of the required site required for the organic matter and nitrogen removal system according to the prior art.

Claims (4)

폐수를 혐기여과상 및 호기여과상에서 처리한 후 처리수를 혐기여과상으로 반송하는 유기물 및 질소제거장치에 있어서, 고농도 유기성폐수가 유입관(15)을 경유하여 유입되며, 크로스플로우 모듈(7) 및 고농도의 미생물이 충전되어 유기물 제거 및 탈질된 후 기체와 액체 및 고체가 분리되어 유출관(16)으로 배출되는 혐기여과상(1)과; 상기 혐기여과상(1)의 배출관(16)을 통해 직렬로 배치되어 배출되는 폐수가 내부로 유입되며, 구형여재(8)를 통과하는 유출수에 블로어(9)로 반응공기를 주입하여 잔류유기물과 입자상물질을 제거함과 아울러 질산화가 이루어지도록 하는 호기여과상(2)과; 이 호기여과상(2)의 유출수가 내부로 유입되어 일부는 저류되고, 질산화된 처리수는 혐기여과상(1)으로 재순환되는 처리수조(3)로 구성됨을 특징으로 하는 생물막을 이용한 고농도 유기물 및 질소제거장치.In the organic matter and nitrogen removal apparatus for treating the wastewater in the anaerobic filtration phase and an aerobic filtration phase and then returning the treated water to the anaerobic filtration phase, a high concentration of organic wastewater is introduced through the inlet pipe (15), the crossflow module (7) And an anaerobic filtration phase (1) in which a high concentration of microorganisms is filled to remove organic matter and denitrification, and gas and liquid and solids are separated and discharged to the outlet pipe 16. Wastewater disposed in series through the discharge pipe 16 of the anaerobic filtration phase 1 is introduced into the discharged water, and the reaction air is injected into the effluent passing through the spherical filter 8 through a blower 9 to the remaining organic matter. An aerobic filtration phase (2) to remove particulate matter and to perform nitrification; High concentration organic matter using a biofilm, characterized in that the effluent of the aerobic filtration phase (2) is introduced into the interior, a part of which is stored, and the nitrified treated water consists of a treatment water tank (3) which is recycled to the anaerobic filtration phase (1). Nitrogen removal device. 청구항 1항에 있어서, 상기 호기여과상(2)은 혐기여과상(1)의 유출수가 상부로 유입되어 하부로 유출되는 하향류흐름방식으로 조내흐름이 플러그흐름으로 유지되도록 구성됨을 특징으로 하는 생물막을 이용한 고농도 유기물 및 질소제거장치.The biofilm of claim 1, wherein the aerobic filtration phase (2) is configured such that the flow in the anaerobic filtration phase (1) is maintained in a plug flow in a downflow flow method in which the effluent flows into the upper portion and flows out to the lower portion. High concentration organic matter and nitrogen removal device using. 청구항 1에 있어서, 상기 혐기여과상(1)에는 고농도의 부착미생물을 보유하여 COD 2,000~15,000mg/L와 TKN 1,000mg/L 이내의 고농도폐수를 처리할 수 있는 것을 특징으로 하는 생물막을 이용한 고농도 유기물 및 질소제거장치.The method according to claim 1, wherein the anaerobic filtration phase (1) has a high concentration of adherent microorganisms can be treated with high concentration of wastewater within COD 2,000 ~ 15,000mg / L and TKN 1,000mg / L, characterized in that the high concentration Organic matter and nitrogen removal device. 청구항 1에 있어서, 상기 호기여과상(2)에는 역세척수공급관(22)이 구비되며, 약품조(4)로부터 알칼리도/질소비가 7.14이하일 때 알칼리도를 조절하기 위한 약품이 공급됨을 특징으로 하는 생물막을 이용한 고농도 유기물 및 질소제거장치.The bio-film according to claim 1, wherein the aerobic filtration phase (2) is provided with a backwash water supply pipe (22), and a chemical for adjusting the alkalinity is supplied from the chemical tank (4) when the alkalinity / nitrogen ratio is 7.14 or less. High concentration organic substance and nitrogen removal device using.
KR1019970047385A 1997-09-13 1997-09-13 Device for removing high concentration of organism and nitrogen using biological membrane KR100244536B1 (en)

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KR100927178B1 (en) * 2009-04-17 2009-11-18 주식회사 신양아이이에스 Advanced treatment apparatus for sewage and wastewater using single reactor

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KR100444333B1 (en) * 2000-12-19 2004-08-16 주식회사 효성 Method for Eliminating Nitrogen of Ammonia by use of Nitrification Reactor
KR100441208B1 (en) * 2001-10-24 2004-07-22 삼성엔지니어링 주식회사 Batch style waste water treatment apparatus using biological filtering process and waste water treatment method using the same

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JPH07308687A (en) * 1994-05-18 1995-11-28 Kubota Corp Waste water treatment device

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JPH07308687A (en) * 1994-05-18 1995-11-28 Kubota Corp Waste water treatment device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100927178B1 (en) * 2009-04-17 2009-11-18 주식회사 신양아이이에스 Advanced treatment apparatus for sewage and wastewater using single reactor

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