KR0153211B1 - Method and equipment for sewage treatment - Google Patents

Method and equipment for sewage treatment

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Publication number
KR0153211B1
KR0153211B1 KR1019940039592A KR19940039592A KR0153211B1 KR 0153211 B1 KR0153211 B1 KR 0153211B1 KR 1019940039592 A KR1019940039592 A KR 1019940039592A KR 19940039592 A KR19940039592 A KR 19940039592A KR 0153211 B1 KR0153211 B1 KR 0153211B1
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South Korea
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tank
sewage treatment
anaerobic
phosphorus
filter medium
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KR1019940039592A
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Korean (ko)
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KR960022286A (en
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박칠림
박칠휘
박명균
장윤석
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장영수
주식회사대우
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Publication of KR0153211B1 publication Critical patent/KR0153211B1/en

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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/308Biological phosphorus removal
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • C02F3/08Aerobic processes using moving contact bodies
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/28Anaerobic digestion processes
    • C02F3/2826Anaerobic digestion processes using anaerobic filters
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/302Nitrification and denitrification treatment
    • C02F3/305Nitrification and denitrification treatment characterised by the denitrification
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F2003/001Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms

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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)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Abstract

본 발명은 여재를 이용한 생물학적 질소, 인 동시제거 공정을 이용하여 기존, 신설 및 증설하수처리장 하수내 다양한 농도의 BOD, 질소 및 인성분을 처리하기 위한 하수처리 방법 및 장치로서 혐기조 및 무산소조에서 미생물과 하수와의 원활한 혼합과 이를 통한 혐기와 무산소반응을 극대화시킬 수 있는 혐기조 및 무산소조의 유출부와 포기조의 혼합액의 단회로 현상을 막을 수 있는 포기조 유출부 및 질산화와 탈진효율을 증가시킬 수 있는 여재 충진부 등을 구비한다.The present invention is a sewage treatment method and apparatus for treating various concentrations of BOD, nitrogen and phosphorus in existing, newly established and expanded sewage treatment plants using biological nitrogen and phosphorus simultaneous removal process using media and microorganisms in anaerobic and anaerobic tanks. Filling of the aeration tank to prevent the short circuit of the mixture of the aeration and the aeration tank and the aeration tank to maximize the anaerobic and anaerobic reaction with smooth mixing with the sewage, and to fill the media to increase the nitrification and dust removal efficiency And the like.

Description

하수처리 방법 및 장치Sewage Treatment Method and Device

제1도는 본 발명의하수처리 방법을 도시하는 개략도.1 is a schematic diagram showing a sewage treatment method of the present invention.

제2도는 본 발명의 하수처리장치의 반응조 및 반응조 유출부를 도시하는 도면.2 is a view showing a reactor and a reactor outlet of the sewage treatment apparatus of the present invention.

제3도는 본 발명의 하수처리장치의 여재 충진부를 도시한 단면Figure 3 is a cross-sectional view showing the filter medium filled portion of the sewage treatment apparatus of the present invention

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

1 : 웨어 2 : 혐기조1: wear 2: anaerobic tank

3 : 무산소조 4 : 포기조3: anaerobic tank 4: abandon tank

5 : 여재 충진부 6 : 침전조5: filter medium filling unit 6: settling tank

7 : 내부 순환시설 8 : 슬러지 반송설비7: Internal circulation facility 8: Sludge conveying facility

9 : 저류조 11, 12, 13 : 유출부9: Storage tank 11, 12, 13: Outflow part

14, 15 : 스크린 16 : 여재14, 15: Screen 16: Media

본 발명은 미생물을 여재에 집적시켜 하수내 저농도의 유기물 및 질소와 인을 동시에 처리할 수 있는 하수처리 방법 및 장치에 관한 것이다.The present invention relates to a sewage treatment method and apparatus capable of simultaneously treating nitrogen and phosphorus in a low concentration of organic matter in sewage by integrating microorganisms in a filter medium.

유기물 및 질소와 인을 처리하는 방법은 미합중국 특허 제 4,867,883 호에 제시되고 있으나 처리방법이 복잡하여 실시하는데 어려움이 많다.Organic and nitrogen and phosphorus treatment method is presented in US Patent No. 4,867,883, but the treatment method is complicated and difficult to implement.

본 발명의 목적은 상기와 같은 단점을 제거하기 위하여 기존 하수처리장의 시설을 간단히 변경하여 처리하기 힘든 하수내 질소 및 인을 동시에 제거하고 유기물 및 질소와 인의 부하변동에 강하며 유입된 하수가 질산화 미생물과 인제거 미생물들이 존재하는 반응조를 통과하면서 연속적으로 처리되는 하수처리 방법 및 장치를 제공하고자 하는 것이다.The purpose of the present invention is to simply change the facilities of the existing sewage treatment plant to remove the above disadvantages, to remove nitrogen and phosphorus in the sewage that is difficult to treat at the same time, and to resist the load fluctuation of organic matter and nitrogen and phosphorus, It is an object of the present invention to provide a sewage treatment method and apparatus which are continuously treated while passing through a reaction tank in which superphosphate-depleting microorganisms exist.

본 발명을 첨부된 도면을 참조하여 하기에 설명한다.The present invention is described below with reference to the accompanying drawings.

본 발명의 하수처리 방법 및 장치는 혐기성 미생물을 보유하는 혐기조와 탈질 미생물을 보유하는 무산소조의 환경을 극대화하기 위해 혐기조 및 무산소 유출부를 설치하고, BOD 제거 질산 및 인 흡수 효율을 높히기 위하여 포기조 유출부를 설치하며, 질산화 탈질 반응과 인 흡수 반응의 제거 효율을 높히기 위해 고농도의 미생물을 집적시킨 여재(Media) 충진부를 설치하여 포기조에서 내부 반송시 이송되는 질산성 질소의 부하를 감소시켜 내부 순환 시설의 펌프 비용을 절감시킬 수 있게 한다.The sewage treatment method and apparatus of the present invention are installed in the anaerobic tank and anoxic outlet to maximize the environment of the anaerobic tank having anaerobic microorganisms and the anoxic tank having denitrification microorganisms, and the aeration tank outlet to increase the efficiency of BOD removal nitric acid and phosphorus absorption. In order to increase the removal efficiency of nitrification and denitrification reaction and phosphorus absorption reaction, a media filling unit incorporating high concentration of microorganisms is installed to reduce the load of nitrate nitrogen transferred during internal conveyance from the aeration tank to reduce the pump cost of the internal circulation facility. To save money.

따라서, 본 발명의 하수처리 방법 및 장치는 첫째, 혐기조 유출부를 조하부에 설치하여 미생물과 하수의 접촉을 원활히 하고 반응후 유출시 단회로 현상(Short Circuit)을 막을 수 있고 또한, 혐기상태를 유지시켜 인 제거 미생물의 활성도를 높일 수 있는가,Therefore, the sewage treatment method and apparatus of the present invention, first, by installing the anaerobic tank outlet portion in the bottom of the bottom to facilitate the contact between the microorganism and the sewage and to prevent the short circuit phenomenon (Short Circuit) during the outflow after the reaction, and also maintain the anaerobic state Can increase the activity of microorganisms

둘째, 무산소조의 유출부를 조 하부에 설치하여 질산성 질소의 탈질 효율을 높일 수 있는가,Second, is it possible to increase the denitrification efficiency of nitrate nitrogen by installing the outlet part of the anoxic tank in the lower part of the tank?

셋째, 포기조 각 단의 유출부를 좌우상하로 엇갈리게 설치하여 혼합액의 단회로 현상을 줄일 수 있는가,Third, is it possible to reduce the short-circuit phenomenon of the mixed liquid by installing the outlet portions of each stage of the aeration tank alternately left and right and up and down?

넷째, 포기조에 충진한 여재는 질산화 탈질 효율을 높이는 역할을 할 수 있는데 고농도의 미생물이 여재내로 집적되어 여재의 내부가 혐기부로 탈질반응을 도울 수 있고 여재 외부는 호기부로 질산화 현상을 도모할 수 있는 가 등을 파악한다.Fourth, the media filled in the aeration tank can play a role of enhancing nitrification and denitrification efficiency. High concentrations of microorganisms can be accumulated in the media, which can help the inside of the media to be denitrified to the anaerobic section, and promote the nitrification to the aerobic section. Find out if there are any.

본 발명을 첨부된 도면을 참조하여 하기 설명한다.The present invention is described below with reference to the accompanying drawings.

본 발명의 하수처리 장치는 실제 하수처리장내 1차 침전지 유출수를 처리할 수 있도록 제1도에 나타난 바와 같은 처리시스템을 구성한다. 본 발명에 필요한 반응조 및 후처리 시설들은 웨어(1), 혐기조(2), 무산소조(3), 포기조(4), 여재충진부(5) 및 침전조(6) 등으로 구성하고, 질산성 질소의 탈질을 위하여 침전조에서 반송되는 슬러지 반송설비(8) 등을 설치한다.The sewage treatment apparatus of the present invention constitutes a treatment system as shown in FIG. 1 to treat the primary sedimentation effluent in the actual sewage treatment plant. Reactor and post-treatment facilities required for the present invention comprises a weir (1), anaerobic tank (2), anoxic tank (3), aeration tank (4), filter medium (5) and settling tank (6), etc. Sludge conveying facilities (8) etc. conveyed from a settling tank are installed for denitrification.

본 발명에서 사용된 하수는 실제 하수처리장의 1차 침전지 유출수로 이들이 웨어(1)로 유입된다. 반응조(2) 내지 (5)의 흐름을 자연유하식으로 하기 위하여 웨어의 위치를 반응조보다 높도록 설치한다. 한편, 웨어(3)에서 하수는 자연유하에 의해 혐기조(2)하부로 유입되고 이 조내부에서 하수내 유기물을 재원으로 탈인 미생물이 인을 세포외로 방출시킨다. 반응이 끝난 후 혼합액은 조하부에서 무산소조(3) 상부로 유입되는데 탈질반응을 원활히 이루어지게 하기 위하여 반응조 하부에 유출부를 설치하여 아래에서 유입되는 포기조(4) 상부로 유입되는 형태를 갖춘다.Sewage used in the present invention is the primary sedimentation effluent of the actual sewage treatment plant they are introduced into the weir (1). In order to make the flow of the reaction tanks (2) to (5) a natural flow type, the position of the weir is installed to be higher than the reaction tank. On the other hand, the sewage from the weir (3) is introduced into the lower part of the anaerobic tank (2) by the natural discharge, and the dephosphorus microorganisms are released from the inside of the tank as a source of organic matter in the sewage to the extracellular. After the reaction is completed, the mixed liquid is introduced into the anoxic tank (3) in the lower part of the bottom, in order to facilitate the denitrification reaction is installed in the lower portion of the reaction tank has a form that flows into the top of the aeration tank (4) introduced from below.

포기조(4)에서 BOD, SS 제거 및 암모니아성 질소의 질산화반응과 인의 세포내 흡수반응이 동시에 일어난다. 여재충진부(5)는 여재에 집적된 고농도의 미생물을 이용하여 질산화 및 탈질효율을 증가시켜 질산성질소의 내부순환시설(7)의 펌프용량을 줄이고 인 흡수효율을 높여 인 제거율을 향상시킨다.In the aeration tank (4), BOD, SS removal, nitrification of ammonia nitrogen and intracellular absorption of phosphorus occur simultaneously. The filter filling unit 5 increases the nitrification and denitrification efficiency by using a high concentration of microorganisms accumulated in the filter medium, thereby reducing the pump capacity of the internal circulating facility 7 of nitrate nitrogen and improving phosphorus absorption efficiency to improve phosphorus removal rate.

침전조(6)에서 슬러지의 일정량을 혐기조(2) 앞으로 반송설비(8)를 이용하여 이송되도록 한다.A certain amount of sludge in the settling tank (6) is to be transferred to the anaerobic tank (2) using a conveying facility (8).

이 시설은 현재 국내 하수처리장에서 운영중인 표준활성오니법으로 처리하기 힘든 질소와 인성분을 포기조의 간단한 변형 및 내부순환시설의 설치로 하수내 질소와 인성분을 처리가능하게 만들 수 있는 공정으로 기존, 신설 및 증설하수처리장에 적용사용할 수 있는 공법으로 설계, 제작한다.This facility is a process that makes it possible to process nitrogen and phosphorus in sewage by simple modification of aeration tank and installation of internal circulation facility for nitrogen and phosphorus that are difficult to process by standard activated sludge method currently operated in domestic sewage treatment plant. It is designed and manufactured by the method that can be applied to new and expanded sewage treatment plants.

반응조의 용량은 2.5m3(0.6m S3.6m S1.16m)로서 포기조의 수리학적 체류시간(이하: HRT)이 6시간, 일일 하수 처리량이 10m3/day이고, F/M 비(F, M, R)가 0.1∼ 0.25 kg BOD/kg MLSS, d,유기물 용적부하율(O,L,R,)은 0.3∼0.5 kg BOD/M3,d가 되도록 한다.The capacity of the reactor is 2.5m 3 (0.6m S3.6m S1.16m), the hydraulic residence time (hereinafter: HRT) of the aeration tank is 6 hours, the daily sewage treatment is 10m3 / day, and the F / M ratio (F, M , R) is 0.1 to 0.25 kg BOD / kg MLSS, d, organic volumetric loading rate (O, L, R,) is 0.3 to 0.5 kg BOD / M 3 , d.

제2도를 참조하면, 유입된 하수는 혐기조(2)에 유입되어 완전 혐기조건에서 유기물을 재원으로 인 제거 미생물에 의하여 오르도-인(Ortho-P)이 미생물 세포밖으로 방출되고 이를 포함한 혼합액은 혐기조유출부(11)를 통해 무산소조(3)로 유입된다. 혐기조유출부(11)는 완전한 혐기조건과 혼합액의 유출시 단회로 현상(Short Circuit) 을 막을 수 있도록 고안한다.Referring to FIG. 2, the introduced sewage is introduced into the anaerobic tank (2), and ortho-P is released out of the microbial cells by phosphorus removing microorganisms as a source of organic matter under complete anaerobic conditions, and the mixed solution containing the same is anaerobic tank. It flows into the anaerobic tank 3 through the outflow part 11. The anaerobic tank outlet 11 is designed to prevent the short circuit phenomenon in the case of complete anaerobic conditions and the outflow of the mixed liquid.

한편, 효과적인 탈질반응을 유도하기 위하여 교반기를 30RPM으로 반응조 하부에서 저속으로 혼합을 시켜주면서 포기조에서 순환된 질산성 질소를 질소가스로 환원시켜 질소를 제거한다. 무산소조 유출부(12)는 탈질조건의 조성 및 혼합액의 단화로 현상을 막을 수 있는 형태로 제작된다. 여재충진부(5)에서는 여재를 충진하여 질산화와 탈질반응을 10∼ 30% 가량을 증가시킬 수 있고 내부순환되는 질산성 질소의 순환양을 감고시키므로서 펌프 설치비를 줄이며 질산성 질소의 농도를 높임으로서 탈질반응시 최대한의 탈질반응의 유도가 가능하다.Meanwhile, in order to induce an effective denitrification reaction, the stirrer is mixed at a low speed at the bottom of the reactor at 30 RPM to reduce nitrogen by reducing the nitrate nitrogen circulated in the aeration tank to nitrogen gas. The oxygen-free tank outlet 12 is manufactured in a form that can prevent the phenomenon by the composition of the denitrification conditions and the shoes of the mixed liquid. The filter filling unit (5) can increase the nitrification and denitrification reaction by about 10 to 30% by filling the filter and reduce the pump installation cost and increase the concentration of nitrate nitrogen by reducing the circulation amount of the circulating nitrate nitrogen. As a result, maximum denitrification can be induced during denitrification.

한편, 반응조의 전체용적은 2.5 m3하였고 혐기조(2)와 무산소조(3) 및 포기조(4)는 각각 420L 로 하였고 약 1 hr의 체류시간을 가지고 완전 혐기조건을 만들어 주면서 유기물의 단회로현상을 방지하기 위한 혐기조(2)내에 10cm S100cm S1180cm의 유출부(11)를 만들어 놓는다. 또한, 포기조(4)에 유입된 혼합액은 4시간동안의 체류시간을 가지면서 앞의 혐기조(2)에서 방출된 인이 호기조건에서 미생물의 세포내로 흡수되면서 인 제거 기작이 일어난다.On the other hand, the total volume of the reactor was 2.5 m 3 and the anaerobic tank (2), anoxic tank (3) and aeration tank (4) were 420L, respectively, and the short-circuit phenomenon of organic matter was achieved while making a complete anaerobic condition with a residence time of about 1 hr. An outlet 11 of 10 cm S100 cm S1180 cm is made in the anaerobic tank 2 for prevention. In addition, while the mixed solution introduced into the aeration tank 4 has a residence time of 4 hours, phosphorus released from the anaerobic tank 2 is absorbed into the cells of the microorganism under aerobic conditions, and thus a phosphorus removal mechanism occurs.

이때 첫 번째 포기조(4)에서 다음 포기조(4)로 혼합액이 넘어갈 때 미생물과 유기물의 원활한 접촉 및 단회로현상을 방지하기 위하여 첫 번째 포기조의 유출부(13)는 25cm S 40cm로 우측하단에 만들고 두 번째 포기조(4)는 같은 크기로 좌측 중심부에 세 번째 포기조(4)는 같은 크기로 우측 하단부에 설치하였다. 질산화 및 탈질화 효율을 증가시키기 위하여 충진한 여재는 5cm × 5cm × 5cm 크기로 반응조 전체체적의 15%를 채워 미생물을 고농도로 여재내에 집적시킨다.At this time, when the mixed solution is passed from the first aeration tank (4) to the next aeration tank (4), in order to prevent the smooth contact and short circuit phenomenon of microorganisms and organic matter, the outlet portion 13 of the first aeration tank is made at the bottom right of 25cm S 40cm. The second aeration tank (4) is the same size in the center of the left and the third aeration tank (4) was installed in the lower right corner of the same size. To increase the nitrification and denitrification efficiency, the filled media is 5 cm × 5 cm × 5 cm and fills 15% of the total volume of the reactor to integrate microorganisms in the media at a high concentration.

제3도를 참조하면, 질소 및 인제거 효율을 높이기 위해 고안된 여재충진부(5)는 5cm S5cm S 5cm 크기의 여재(16)를 반응조 420L체적의15%를 충진하였고 여재는 폴리우레탄 포옴(Polyurethane foam) 형태로 포로시티(Porosity) 98%와 비표면적 20m2/m3의 재원을 가진다. 한편 여재충진부(5)에 들어있는 여재(16)가 좌우의 포기조(4)로 유실되는 것을 막기위하여 0.5cm S0.5cm 크기의 단면을 지닌 스크린(14) 및 (15)을 유입구와 유출부에 각각 설치한다.Referring to FIG. 3, the filter filling unit 5 designed to increase nitrogen and phosphorus removal efficiency was filled with a filter medium of size 5cm S5cm S 5cm 16 filled with 15% of the volume of the reactor 420L, and the filter medium was a polyurethane foam. It has a foam of 98% porosity and a specific surface area of 20m 2 / m 3 . On the other hand, in order to prevent the filter medium (16) contained in the filter medium (5) from being lost to the left and right aeration tank (4), the screens (14) and (15) having a cross section of 0.5 cm S0.5 cm are inlet and outlet. Install on each.

[실시예]EXAMPLE

(1) 장치명 : DNR PROCESS-1 (Daewoo Nutrient Removal Process)-1(1) Device name: DNR PROCESS-1 (Daewoo Nutrient Removal Process) -1

(2) 적용하수처리장 : 골포천 하수처리장 ; 경기도 부천시 소재(2) Applicable sewage treatment plant: Golpocheon sewage treatment plant; Bucheon-si, Gyeonggi-do

(3) 적용하수 : 1차 침전지 유출수(3) Applicable Sewage: Primary sedimentation effluent

(4) 규모 : (반응조)(4) Scale: (reactor)

단면적 (60cm S60cm S60EA) :21600CM2 Cross Section (60cm S60cm S60EA): 21600CM 2

높이 : 1,160cmHeight: 1160cm

용적 : 2.5m3 Volume: 2.5 m 3

재질 : 아크릴판Material: Acrylic Plate

(5) 운전기간 : 1994.2.-1994.12.(5) Operation Period: 1994.2.-1994.12.

(6) 운전방법(6) How to operate

본 발명의 하수처리장치의 효율을 평가하기 위하여 국내 하수처리장에서 대표적인 골포천하수처리장에서 1차 침전지 유출수를 이용하여 공정의 실증실험을 수행하였다. 반응조(2) 내지 (5)에 실제 하수처리장의 반송수 및 포기조내 슬러지를 시딩(seeding)한 후, 초기 시운전(start-up)하기 전에 약 10일간 적응기를 두고 HRT 20 hr (3.3day)으로 운전이 시작하고 80%이상의 BOD 제거율을 보일 때 점차로 유입하수량을 증가시켜 운전시작후 50 일 정도 후부터는 1 HRT 6hr으로 운전을 정상화 시킨다.In order to evaluate the efficiency of the sewage treatment apparatus of the present invention, an experimental experiment was conducted using a primary sedimentation effluent in a representative Gopocheon sewage treatment plant in a domestic sewage treatment plant. After seeding the return water and sludge in the aeration tank of the actual sewage treatment plant in the reactors (2) to (5), leave the adaptor at HRT 20 hr (3.3day) for about 10 days before initial start-up. When the operation starts and the BOD removal rate is over 80%, the inflow sewage is gradually increased to normalize the operation to 1 HRT 6hr after about 50 days after the operation starts.

웨어(1)로 유입된 원하수는 자연유하식으로 혐기조로 유입되도록 한다. 혐기조(2)에 유입된 하수는 분석자료표 1, 표 2를 근거로 유기물부하를 운전조건에 따라 조절하였다. 혐기성 미생물의 성장지표는 혐기조에서 인의 방출율을 근거로 하였으며 포기조(4)에서 운전일수에 따라 질산화미생물이 활성을 갖고 질산화율이 증가되는 시점에 탈질을 위해 포기조 끝단에서 무산소조(3)로 질산성 질소혼합액을 내부순환을 시켜 준다.The raw sewage flowing into the weir (1) is allowed to flow into the anaerobic tank by natural flow. The sewage flow into the anaerobic tank (2) was adjusted according to the operating conditions based on the analysis data table 1, table 2. Growth indicators of anaerobic microorganisms were based on the release rate of phosphorus in the anaerobic tank, and the nitric acid nitrogen mixture from the aeration tank end to the anaerobic tank (3) for denitrification at the time when the nitrifier was active and the nitrification rate increased in the aeration tank (4). Let internal circulation.

정상상태에서 혐기조(2)에서는 유기물을 재원으로 인이 미생물의 세포밖으로 방출되고 무산소조(3)에서는 혐기조(2)에서 소요되고 남은 유기물을 재원으로한 질산성질소의 탈질반응이 일어나게 한다.In the anaerobic tank (2) in the normal state, phosphorus is released into the cells of microorganisms as a source of organic matter, and in the anoxic tank (3), denitrification reaction of nitrogen nitrate takes place in the anaerobic tank (2) and the remaining organic matter is caused.

혐기조(2)에서 방출된 인은 포기조(4)에서 용존산소를 이용하여 인제거 박테리아의 세포내로 흡수하게 된다. 포기조(4)는 용존산소(DO)를 실제 하수처리장의 포기조 조건과 유사하게 2.5∼3.5mg/L 정도를 유지하였고, 이 상태에서 BOD 즉 유기물 제거와 암모니아성 질소의 질산화반응 및 혐기조에서 방출된 인의 세포내 흡수반응이 일어난다.Phosphorus released from the anaerobic tank (2) is absorbed into the cells of the dephosphorus bacteria by using dissolved oxygen in the aeration tank (4). The aeration tank (4) maintained dissolved oxygen (DO) at about 2.5 to 3.5 mg / L, similar to the aeration tank conditions in the sewage treatment plant, and in this state, BOD, organic matter removal, nitrification of ammonia nitrogen, Phosphorus intracellular absorption occurs.

또한, 여재충진부(5)내는 고농도의 미생물이 여재내로 질적시킬 수 있게 공기를 여재(6)가 가라앉지 않을 정도만 불어 넣는다.In addition, the filter filling unit 5 blows air only to the extent that the filter medium 6 does not sink so that a high concentration of microorganisms can be quantitated into the filter medium.

최종적인 처리수는 저류조(9)에 일시 저장하여 높이센서(Level Sensor)에 의해 자동으로 유출 시킨다.The final treated water is temporarily stored in the storage tank (9) and automatically flowed out by the level sensor.

이상의 모든 반응장치 및 기계류들은 중앙통제 장치에서 자동으로 조절되도록 설계, 시공하였다.All of the above reactors and machinery were designed and constructed to be automatically controlled by the central control unit.

본 발명의 하수처리장치의 반응조에 처리장 반송슬러지 및 포기조의 미생물을 0.4m3를 시딩한 후, 초기 시운전 하기전에 약 10일간 적응기를 두었고 HRT 20hr (3.3day)으로 운전을 시작하였으며, 80% 이상의 BOD재기율을 유지할 때 점차적으로 유입하수량을 증가시켰다. 운전시작 후 약 50일이 경과한 후부터 목표유입 하수량(2.5m3)을 유입시켜 주었으며 질산성질소의 탈질반응을 위하여 운전시작후 약 60일 지난 후 부터 내부순환비 200%로, 정상상태에서 최종목표인 80%까지 줄여나갔다. 포기조(4)에서 무산소조(3)로 내부순환을 시켰다. 유입하수량의 증가와 더불어 질산화율의 증가는 90% 이상을 가리켰으며, T-N 은 70% 이상 T-P 는 87% 이상으로 안정적으로 나타났다.After seeding 0.4 m 3 of the microorganisms in the treatment plant return sludge and the aeration tank in the reaction tank of the sewage treatment apparatus of the present invention, the adaptor was placed for about 10 days before the initial test run, and the operation was started with HRT 20hr (3.3day), and 80% or more. Increasing inflow sewage gradually increased while maintaining the BOD recovery rate. After the operation started at about 50 days after the lapse of a target inlet sewage water amount (2.5m 3) then it gave the inlet to begin operation for nitrate bovine denitrification 60 with a non-200% in the circulation since the final target in the normal state That was reduced by 80%. Internal circulation was made from the aeration tank (4) to the anaerobic tank (3). Increasing the amount of influent sewage increased the nitrification rate by more than 90%, and the TN was more than 70% and the TP was more than 87%.

유입수의 pH는 6.4-7.3이고 처리한 후 유출수내 pH는 7.0-7.3 정도러 안정되게 나타났으며 반응조내 수온은 15∼ 28℃ 를 유지하였다. 온도에 따른 인 제거율에 대한 영향은 크지 않았으며 다만, 질산화율에 영향을 미쳐 질산화 미생물의 비증식 속도 μmax에 대한 온도영향은 μ=max(T-Tref)의 형태를 나타내고 이에따른 미생물의 포화상수(Ks, l)는 0.04e0.11S(T-15)Ks, l 로 나타났다.The pH of the influent was 6.4-7.3 and the pH of the effluent after treatment was stable at about 7.0-7.3 and the water temperature in the reactor was maintained at 15 ~ 28 ℃. The effect of phosphorus removal rate on temperature was not significant, but the effect of nitrification rate on the non-proliferative rate μmax of nitrifying microorganisms was in the form of μ = max (T-Tref) and the saturation constant Ks, l) was found to be 0.04e 0.11S (T-15) Ks, l.

본 발명의 하수처리장치는 기존시설의 변경비용을 고려하면 포기조(4)의 간단한 변경(격막설치) 및 질산성질소의 내부순환을 위한 펌프설치에 소요되는 경비는 미미하기 때문에 기존의 질소 및 인 제거 장치설치시 필요로 하는 추가 반응조 및 펌프 및 약품비용에 비교하면 매우 경제적이라 볼 수 있다.The sewage treatment apparatus of the present invention removes the nitrogen and phosphorus because the cost required for the simple change (a diaphragm installation) of the aeration tank (4) and the installation of a pump for internal circulation of nitrate nitrogen is insignificant considering the change cost of the existing facility. It is very economical compared to the cost of additional reactors, pumps and chemicals required for the installation.

반응조 내부의 혐기조(2)와 무산소조(3)에 설치한 유출부(11) 및 (12)는 완전혐기 및 무산소조건응 형성하여 효과적인 인 제거 미생물의 인 방출 및 질산성 질소의 탈질화 반응이 일어나기 때문에 국내와 같은 저농도의 하수에서 처리하기 힘든 질소 및 인의 처리가 가능하다. 또한, 포기조(4) 각 단에 설치한 유출부(13)는 기존의 질소 및 인 제거 공정에서 일어날 수 있는 단회로 현상을 막을 수 있는 효과가 있다. 한편 기존의 질소와 인제거공정은 추가의 반응조 설치 및 약품주입비등 처리후 발생되는 슬러지 발생등 여러 가지 문제점을 지니고 있어 상대적으로 본 발명의 우수성이 입증된다. 또한 여재충진부(5)에 충진되는 여재는 현재 개발된 혐기-호기 공정에서 나타나는 질소 및 인 제거 효율을 10∼ 30% 정도 높일 수 있고 기존의 하수처리장에서 발생될 수 있는 부하충격으로 인한 포기조 및 침전조의 슬러지 팽윤현상 등을 줄일 수 있어 공정의 운영상 매우 효과적이라 볼 수 있다.The outlets 11 and 12 installed in the anaerobic tank (2) and the anoxic tank (3) inside the reactor are formed under complete anaerobic and anoxic conditions so that phosphorus release of effective phosphorus removing microorganisms and denitrification of nitrate nitrogen occur. Therefore, it is possible to treat nitrogen and phosphorus which is difficult to treat in low concentration sewage such as domestic. In addition, the outlet portion 13 installed in each stage of the aeration tank 4 has an effect of preventing a short circuit phenomenon that may occur in the existing nitrogen and phosphorus removal process. On the other hand, the existing nitrogen and phosphorus removal process has a number of problems, such as the sludge generated after the addition of the reaction tank installation and chemical injection rate treatment is relatively excellent in the present invention. In addition, the filter medium filled in the filter medium (5) can increase the nitrogen and phosphorus removal efficiency of the anaerobic-aerobic process currently developed by about 10 to 30%, and the aeration tank due to the load shock generated in the existing sewage treatment plant and Sludge swelling of the sedimentation tank can be reduced, which is very effective in the operation of the process.

본 발명의 하수처리 방법 및 장치가 적용가능 하수처리장은 대규모(5000m3/d이상)의 하수처리장, BOD 〈 70 mg/L 의 저농도 하수처리장, 슬러지 팽윤현상이 빈번히 일어나는 하수처리장, BOD 〉140 mg/L의 고농도 하수처리장, 질소 및 인 농도가 높은 하수처리장, BOD 부하변동이 심한 하수처리장, 패키지화된 소규모 폐수처리장이다.Sewage treatment plant applicable to the sewage treatment method and apparatus of the present invention is a large-scale (more than 5000m3 / d) sewage treatment plant, BOD <70 mg / L low concentration sewage treatment plant, sewage treatment plant where sludge swelling frequently occurs, BOD> 140 mg / It is a high concentration sewage treatment plant of L, a sewage treatment plant with high nitrogen and phosphorus concentration, a sewage treatment plant with high BOD load fluctuations, and a small packaged wastewater treatment plant.

Claims (3)

하수를 혐기조(2)에 유입시켜 인 제거 미생물에 의하여 오르도-인이 방출되도록 한 후, 무산소조(3)와 포기조(4)로 차례로 유입시키고, 이후 여재충진부(5)로 유입시켜 질산화 탈질 반응을 10∼ 30% 증가시켜 내부순환되는 질산성 질소의 순환양을 감소시키며, 질산성 질소의 농도를 높여 최대한의 탈질 반응의 유도가 가능하도록 하는 것을 특징으로 하는 하수처리방법.The sewage is introduced into the anaerobic tank (2) to release ortho-phosphorus by the phosphorus-removing microorganism, and then inflow into the anoxic tank (3) and the aeration tank (4) in turn, and then into the filter filling unit (5) to carry out nitrification and denitrification. 10 to 30% by increasing the circulating amount of nitrate nitrogen circulated internally, the sewage treatment method characterized in that to increase the concentration of nitrate nitrogen to induce maximum denitrification reaction. 웨어(1), 혐기조(2), 무산소조(3), 포기조(4), 여재충진부(5) 및 침전조(6)를 가지며 내부순환시설(7)과 슬러지 반송설비(8)를 구비하고, 여재충진부(5)에는 여재(14)가 충진되며, 여재충진부(5)에는 여재(16)가 유실되는 것을 막기 위하여 스크린(14, 15)이 설치되게 구성되는 것을 특징으로 하는 하수처리장치.Equipped with a weir (1), anaerobic tank (2), anoxic tank (3), aeration tank (4), filter medium (5) and sedimentation tank (6), and has an internal circulation facility (7) and a sludge conveying facility (8), The filter medium filling part 5 is filled with a filter medium 14, and the filter medium filling part 5 is configured to install screens 14 and 15 to prevent the filter medium 16 from being lost. . 제2항에 있어서, 여재(16)는 5cm × 5cm × 5cm 크기를 가지며 폴리우레탄 포옴 형태로 포로시티 98% 와 비표면적 20m2/m3인 것을 특징으로 하는 하수처리장치.The sewage treatment apparatus according to claim 2, wherein the media (16) has a size of 5 cm x 5 cm x 5 cm and has a porosity of 98% and a specific surface area of 20 m 2 / m 3 in the form of polyurethane foam.
KR1019940039592A 1994-12-30 1994-12-30 Method and equipment for sewage treatment KR0153211B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020001700A (en) * 2001-12-05 2002-01-09 이경주 Integrated treatment system for organic garbage and sewage
KR100425335B1 (en) * 2002-01-08 2004-03-31 주식회사 환경비젼이십일 Wastewater treatment system using SBBR(Sequencing batch biofilm reactor) and equalization tank

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100822667B1 (en) * 2007-11-06 2008-04-16 신양용역개발(주) Advanced treatment apparatus for sewage using the sy-sfbnr

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020001700A (en) * 2001-12-05 2002-01-09 이경주 Integrated treatment system for organic garbage and sewage
KR100425335B1 (en) * 2002-01-08 2004-03-31 주식회사 환경비젼이십일 Wastewater treatment system using SBBR(Sequencing batch biofilm reactor) and equalization tank

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