KR19990064364A - High-efficiency activated sludge wastewater treatment system for advanced oxidation and its method - Google Patents
High-efficiency activated sludge wastewater treatment system for advanced oxidation and its method Download PDFInfo
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Abstract
본 발명은 고급산화이용 고효율 활성오니 폐수처리장치 및 그 방법에 관한 것으로, 폐수가 최초로 폐수공급라인(L)으로 유입되어 폐수중의 부유물이나 이물질이 1차적으로 응집분리되는 응집침전조(1), 폐수에 오존(O3)을 공급하여 폐수중의 난분해성 유기물을 생물분해성 유기물로 전환시키는 전(前)오존접촉조(2), 이 전오존접촉조(2)를 거친 폐수에 산소를 공급하여 폐수중의 용존산소량을 증가시켜 미생물에 의한 생물분해성 유기물을 분해처리하는 순산소활성오니조(3) 및 침전조(4), 폐수에 오존(O3)을 재공급하여 폐수중의 잔여 난분해성 유기물을 다시 생물분해성 유기물로 전환시키는 후(後)오존접촉조(5), 후오존접촉조(2)를 거친 폐수중의 유기물을 촉매에 의하여 분해시키는 촉매산화조(6), 이 촉매산화조(6)를 차례로 거쳐 폐수가 정화처리되도록 한 것으로, 전오존접촉조(2)와 후오존접촉조(5)의 하부에는 고농도의 오존을 공급하는 오존공급라인(L1)의 일단이 접속되어 있고, 양 오존접촉조(2)(5)의 상부에는 오존이 폐수와 반응후 환원되어진 산소를 리사이클링하기 위한 산소라인(L2)이 설치되어 있으며, 이 산소라인(L2)은 순산소활성오니조(3)로 연결되어 있다.The present invention relates to a high-efficiency activated sludge wastewater treatment apparatus and its method using advanced oxidation, in which flocculation sedimentation tank (1) in which wastewater is first introduced into the wastewater supply line (L) and the suspended matter or foreign matter in the wastewater is first flocculated and separated, By supplying ozone (O 3 ) to the wastewater, oxygen is supplied to the wastewater that passed through the pre-ozone contacting tank (2), which converts the non-degradable organic matter from the wastewater into biodegradable organic matter. Residual hardly decomposable organic matter in the wastewater by re-supplying ozone (O 3 ) to the pure oxygen activated onyx (3) and sedimentation tank (4) and wastewater by increasing the amount of dissolved oxygen in the wastewater to decompose the biodegradable organic matter by the microorganisms. The catalytic oxidation tank (6) for decomposing organic matter in the wastewater which has passed through the ozone contact tank (5) after the conversion of the biodegradable organic material back into biodegradable organic matter (2), and the catalytic oxidation tank ( After 6) the wastewater is purified One end of the ozone supply line (L1) for supplying a high concentration of ozone is connected to the lower part of the front ozone contact tank (2) and the after ozone contact tank (5), and both ozone contact tanks (2) and (5). In the upper part of the oxygen line (L2) for recycling the oxygen is reduced after the reaction with the waste water is installed, the oxygen line (L2) is connected to the pure oxygen activated onyx (3).
Description
본 발명은 유기물질 함유량이 비교적 높은 일반 생활하수는 물론 각종 화학폐수 및 폐기물 침출수 폐수와 같은 난분해성 폐수와 분뇨 및 축산폐수 등의 고농도 유기물 폐수를 강력한 산화력을 갖는 오존(O3) 과 반응토록 하여 난분해성 유기물의 분해, 색도제거 및 살균처리를 할 수 있도록 하고, 오존의 분해로 생성된 산소는 순산소활성오니조로 재공급시키므로써 처리효율을 높이고 운전비용을 절감할 수 있도록 한 고급산화이용(高級酸化利用) 고효율 활성오니 폐수처리장치 및 그 방법에 관한 것이다.The present invention reacts ozone (O 3 ) with strong oxidizing power to non-degradable wastewaters such as chemical wastewater and waste leachate wastewater and high concentration organic matter wastewater such as manure and livestock wastewater, as well as general household sewage having a relatively high organic matter content. Advanced oxidation use to decompose, decolorize, and sterilize hardly decomposable organic matters, and regenerate oxygen generated by the decomposition of ozone to pure oxygen activated sludge to increase processing efficiency and reduce operating costs. High efficiency activated sludge wastewater treatment apparatus and method thereof.
일반적으로 화학 폐수 및 폐기물 침출수 등의 난분해성 폐수를 정화하는데는 화학약품에 의한 방법을 사용하고 있는데, 이와 같은 화학적 폐수처리시스템에서는 미생물처리가 이루어지지 않고 화학약품에 의존하기 때문에 운전비용이 높으며, 처리수에 산화제 등이 포함된 상태로 외부로 방류되기 때문에 하천 생태계를 파괴하게 되는 2차 오염의 폐단이 있었다.In general, chemical purification methods are used to purify hardly degradable wastewater such as chemical wastewater and waste leachate.In this chemical wastewater treatment system, microbial treatment is not performed and the operation cost is high because it depends on chemicals. Because of the discharge of the treated water containing oxidizing agents and the like outside, there was a waste of secondary pollution that would destroy the river ecosystem.
또, 분뇨 및 축산폐수 등의 고농도 유기물 폐수는 미생물처리방식을 사용하고 있는데, 이는 총질소가 높고, 미생물처리만으로는 폐수를 처리기준에 맞게 처리하는 것이 불가능하였으며, 유기물의 농도가 높아 폭기조의 용적이 매우 커지게 되는 단점이 있었을 뿐만 아니라, 미생물처리과정에서 암모니아성 질소의 질산화에 의해 생성된 아질산성 질소에 의해 화학적 산소요구량 즉, COD가 높아지는 단점도 있었고, 처리수의 색도제거가 곤란한 문제점이 있었다.In addition, high concentration organic wastewater, such as manure and livestock wastewater, uses a microbial treatment method, which has high total nitrogen, and it is impossible to treat wastewater in accordance with treatment standards by microbial treatment alone. In addition to the disadvantages of becoming very large, the chemical oxygen demand, that is, COD is increased by the nitrite nitrogen produced by nitrification of ammonia nitrogen during the microbial treatment process, and the color of the treated water was difficult to remove. .
본 발명은 상기한 종래 생물. 화학적 폐수처리시스템의 제반문제점을 감안하여 안출된 것으로, 본 발명의 목적은 첫째, 기존의 화학적 폐수처리시스템에서 산화제가 갖고 있던 잔류성 및 이로 인한 2차 오염이 없는 오존(O3)을 활용하므로써 환경친화적인 폐수처리시스템을 제공하는데 있고, 둘째, 난분해성 폐수에 오존을 접촉시켜 이를 생물분해성으로 전환시키므로써 생물학적 처리의 효율을 향상시키며, 셋째 , 오존의 표백작용에 의한 처리수의 효과적인 색도제거 및 살균작용이 가능하도록 하고, 넷째, 오존으로 이용되고 난 산소를 재활용하여 폐수중으로 공급시키므로써 폐수중의 용존산소량을 높여 생물학적 처리효율을 향상시킴과 동시에 시스템을 경제적으로 운용할 수 있으며, 미생물처리와 고급산화(오존산화 및 촉매산화)를 동시에 이용하므로써 매우 좋은 처리수질을 얻을 수 있는 고급산화이용 고효율 활성오니 폐수처리장치와 그 방법을 제공하는데 있는 것이다.The present invention described above conventional organisms. The present invention has been made in consideration of various problems of the chemical wastewater treatment system, and an object of the present invention is firstly, by using ozone (O 3 ) without residuals and secondary pollution caused by the oxidizing agent in the existing chemical wastewater treatment system. In order to provide a friendly wastewater treatment system, and secondly, to improve the efficiency of biological treatment by contacting ozone to biodegradable wastewater and converting it into biodegradable, and thirdly, to effectively remove color of treated water by bleaching of ozone. Fourth, by recycling the oxygen used as ozone and supplying it to the wastewater, it can increase the dissolved oxygen in the wastewater, improve the biological treatment efficiency and operate the system economically. Very good treatment quality by using advanced oxidation (Ozone oxidation and catalytic oxidation) simultaneously Sludge using high-efficiency advanced oxidation activity that can be obtained is that to provide a waste water treatment apparatus and method.
이와 같은 목적을 달성하기 위하여 본 발명의 일실시예에서는 용존성 유기물질을 다량함유하고 있는 생활하수 등의 처리에 적합하도록 폐수에 오존(O3)을 공급하여 폐수중의 난분해성 유기물질을 생물분해성 유기물질로 전환시키는 전(前)오존접촉단계, 이 전오존접촉단계를 거친 폐수에 산소(O2)를 공급하여 폐수중의 용존산소량을 증가시켜 미생물에 의해 생물분해성 유기물을 분해처리하는 산소활성단계, 이 산소활성단계를 거친 폐수중의 오니를 침강분리시키는 침전단계, 상기 산소활성단계와 침전단계를 거친 폐수에 오존을 재공급하여 폐수중의 잔여 난분해성 유기물을 다시 생물분해성 유기물로 전환시키는 후(後)오존접촉단계, 후오존접촉단계를 거친 폐수중에 잔류되어 있는 유기물을 생물활성탄으로 흡착분해하는 생물활성탄 흡착분해단계로 이루어진 고급산화이용 고효율 활성오니 폐수처리방법을 제공한다.In order to achieve the above object, in one embodiment of the present invention, ozone (O 3 ) is supplied to the wastewater so as to be suitable for the treatment of domestic sewage, which contains a large amount of dissolved organic substances, and thus, biodegradable organic substances in the wastewater are biocompatible. Oxygen that decomposes biodegradable organic matter by microorganisms by supplying oxygen (O 2 ) to the wastewater that passed through the pre-ozone contact stage, and converting it into a degradable organic substance, thereby increasing the amount of dissolved oxygen in the wastewater. A precipitation step of sedimentation and sedimentation of sludge from the wastewater, which has undergone this oxygen-activation step, and re-supplying ozone to the wastewater that has passed through the oxygen-activation step and the precipitation step, and converts the remaining hardly decomposable organic matter from the wastewater back into biodegradable organic matter. Bioactive carbon adsorption decomposition which decomposes the organic matter remaining in the wastewater after the ozone contacting step and the post-ozone contacting step into bioactive carbon. Using advanced oxidation to step consisting provides high efficiency activated sludge wastewater treatment.
본 발명의 다른 실시예에서는 각종 부유성 유기물질을 많이 포함하고 있는 침출수, 분뇨, 축산폐수 등의 난분해성 폐수의 처리에 적합하도록 상기 전오존접촉 단계에 앞서 폐수에 황상 제1철(FeSo4), 염화 제1철(FeCl2) 등의 응집제를 투여하여 폐수중의 부유성 유기물질을 1차적으로 응집분리하기 위한 응집침전단계를 거치고, 상기 후오존접촉단계를 거친 폐수중의 유기물을 이산화망간(MnO2)의 주촉매 성분과 기타 천이원소의 조촉매 및 담체로 이루어진 촉매에 의하여 분해시키는 촉매산화단계를 거친 후 생물활성탄에 의한 흡착분해단계를 거치도록 한 폐수처리방법을 제공한다.In another embodiment of the present invention prior to the pre-ozone contact step to the treatment of hardly degradable wastewater, such as leachate, manure, livestock wastewater, which contains a lot of a variety of floating organic matter (FeSo 4 ) , By administering a coagulant such as ferric chloride (FeCl 2 ) to undergo coagulation sedimentation step for primary coagulation and separation of the suspended organic material in the wastewater, and to remove the organic matter in the wastewater after the ozone contacting step. The present invention provides a wastewater treatment method that undergoes a catalytic oxidation step of decomposing by a catalyst composed of a main catalyst component of MnO 2 ), a catalyst of other transition elements, and a carrier, followed by an adsorption decomposition step of bioactive carbon.
또, 본 발명은 압축공기를 산소발생기에 공급하여 공기중의 질소를 흡착제거하고 난 산소만을 오존발생기를 거쳐 고농도의 오존으로 생성시켜 피처리수가 유입되어지는 전오존접촉조와 후오존접촉조로 동시 공급시키고, 폐수와 반응후 환원된 산소는 재사용 가능하도록 산소라인을 통하여 순산소활성오니조로 공급할 수 있도록 하며, 촉매산화조에서는 이산화망간(MnO2)의 주촉매성분과 기타 천이원소의 조촉매 및 담체로 이루어진 촉매에 의해 유기물을 분해할 수 있도록 구성하고, 최종적으로 미분해된 유기물이 생물활성탄에 의해 흡착분해가 이루어지도록 하므로써 안정된 처리수가 얻어질 수 있도록 한 폐수처리장치를 제공한다.In addition, the present invention is to supply the compressed air to the oxygen generator to adsorb and remove the nitrogen in the air only to generate a high concentration of ozone through the ozone generator to simultaneously supply to the ozone contact tank and the post ozone contact tank into which the water to be treated flows. After the reaction with the waste water, the reduced oxygen can be supplied to the pure oxygen activated sludge tank through the oxygen line for reuse, and in the catalytic oxidation tank as the main catalyst component of manganese dioxide (MnO 2 ) and other promoters and carriers of other transition elements. The present invention provides a wastewater treatment apparatus which is configured to decompose organic matters by the formed catalyst, and finally obtains stable treated water by adsorbing and decomposing undecomposed organic matters by bioactive carbon.
도 1은 본 발명의 일 실시예에 의한 폐수처리장치의 구성도,1 is a block diagram of a wastewater treatment apparatus according to an embodiment of the present invention,
도 2는 본 발명의 다른 실시예에 의한 폐수처리장치의 구성도이다.2 is a block diagram of a wastewater treatment apparatus according to another embodiment of the present invention.
도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings
1: 응집침전조 2: 전오존접촉조1: coagulation sedimentation tank 2: all ozone contact tank
2a: 산기관 2b: 오존분해기2a: diffuser 2b: ozone decomposer
3: 순산소활성오니조 4: 침전조3: pure oxygen activated sludge tank 4: settling tank
5: 후오존접촉조 5a: 산기관5: ozone contact tank 5a: diffuser
5b: 완충조 5c: 브롬촉매조5b: buffer tank 5c: bromine catalyst tank
6: 촉매산화조 7: 생물환성탄 흡착분해조6: catalytic oxidation tank 7: biocyclic carbon adsorption cracking tank
8: 공기압축기 9: 산소발생기8: Air Compressor 9: Oxygen Generator
10: 오존발생기 L: 폐수공급라인10: ozone generator L: waste water supply line
L1: 오존공급라인 L2: 산소라인L1: Ozone Supply Line L2: Oxygen Line
L3: 산소.폐수공급라인 L4: 반송라인L3: Oxygen / Wastewater Supply Line L4: Return Line
L5: 배출라인 L6: 산소라인L5: discharge line L6: oxygen line
N: 폭기노즐 P1, P2, P3: 펌프N: Aeration nozzle P1, P2, P3: Pump
본 발명의 바람직한 실시예들을 첨부된 도면에 의하여 설명하면 다음과 같다.Preferred embodiments of the present invention will be described with reference to the accompanying drawings.
도 1은 본 발명의 일실시예에 의한 폐수처리장치의 도시한 것으로, 본 실시예는 생활하수나 하천수 등 용존성 유기물을 다량 함유하고 있는 폐수의 처리에 적합하도록 설계된 것이다. 본 실시예는 폐수에 오존(O3)을 공급하여 폐수중의 난분해성 유기물을 생물분해성 유기물로 전환시키는 전(前)오존접착조(2), 이 전오존접촉조(2)를 거친 폐수에 산소를 공급하여 폐수중의 용존산소량을 증가시켜 미생물에 의하여 생물분해성 유기물을 분해처리하는 순산소활성오니조(3) 및 침전조(4), 폐수에 오존(O3)을 재공급하여 폐수중의 잔여 난분해성 유기물을 다시 생물분해성 유기물로 전환시키는 후(後)오존접촉조(5), 후오존접착조(5)를 거친 폐수중의 유기물을 흡착분해하는 생물활성탄 흡착분해조(7)를 거쳐 폐수가 정화처리되도록 한 특징을 갖는다.1 is a view showing a wastewater treatment apparatus according to an embodiment of the present invention, and this embodiment is designed to be suitable for the treatment of wastewater containing a large amount of dissolved organic matter such as domestic sewage or river water. In this embodiment, ozone (O 3 ) is supplied to the wastewater, and the pre-ozone bonding tank (2) for converting the non-degradable organic matter in the wastewater into the biodegradable organic matter is applied to the wastewater passed through the ozone contact tank (2). by supplying oxygen to pure oxygen activated sludge tank (3) and the settling tank 4, the re-supply of ozone (O 3) to the waste water treatment decompose biodegradable organic matter by microorganisms by increasing the amount of dissolved oxygen in the waste water of the waste water After converting the remaining hardly decomposable organics back into biodegradable organics, the bioactive carbon adsorption decomposition tank (7), which adsorbs and decomposes organic matter in the wastewater, which has passed through the ozone bonding tank (5). The waste water is characterized in that it is purified.
상기 전오존접촉조(2)와 후오존접촉조(5)의 하부에는 공기압축기(8)에 의하여 압축된 공기를 산소발생기(9)에 공급하여 이 산소발생기(9)에서 공기중의 질소를 흡착제거하고 나머지 산소만을 오존발생기(10)를 거쳐 생성된 고농도의 오존을 공급하는 오존공급라인(L1)의 일단이 접속되어 있고, 양 오존접촉조(2)(5)의 상부에는 오존이 폐수와 반응후 환원되어진 산소를 리사이클링하기 위한 산소라인(L2)이 설치되어 있으며, 이 산소라인(L2)은 순산소활성오니조(3)로 연결되어 있다.In the lower portion of the pre-ozone contact tank 2 and the post-ozone contact tank 5, the air compressed by the air compressor 8 is supplied to the oxygen generator 9 to supply nitrogen in the air from the oxygen generator 9. One end of the ozone supply line (L1) for adsorbing removal and supplying only the high concentration of ozone generated through the ozone generator (10) is connected, and the ozone is disposed on the upper portions of both ozone contact tanks (2) (5). Oxygen line (L2) for recycling the reduced oxygen after the reaction with is installed, the oxygen line (L2) is connected to the pure oxygen activated onyx (3).
상기 산소라인(L2)의 도중에는 전.후오존 접촉조(2)(5)에서 반응을 마친 후 잔류된 오존(O3)을 제거하기 위한 오존분해기(2b)와 , 순산소활성오니조(3)내의 폐수를 펌프(P1)로 펌핑하여 리사이클링된 산소와 혼합, 분사시키기 위한 벤튜리(V)가 설치되어 있으며, 산소.폐수혼합관(L3)의 말단에는 순산소활성오니조(3)내부에 설치된 회전식 폭기노즐(N)이 접속되어 순산소활성오니조(3)내의 폐수와 산소와의 접촉반응을 향상시킬 수 있도록 한다.In the middle of the oxygen line (L2) after the reaction in the ozone contact tank (2) (5) before and after the ozone decomposer (2b) for removing the residual ozone (O 3 ), and a pure oxygen activated onizo (3) Venturi (V) is installed for mixing and spraying the wastewater in the pump with the pump (P1), and the oxygen and wastewater mixing pipe (L3) is inside the pure oxygen-activated sludge tank (3). The rotary aeration nozzle N is connected to the wastewater in the oxy-gen activated tank 3 to improve the contact reaction between oxygen and oxygen.
또, 상기 순산소활성오니조(3)로는 상기의 리사이클용 산소라인(L2)외에도 산소발생기(9)에서 발생된 산소를 직접 공급하기 위한 또 다른 산소라인(L6)이 설치되어 충분한 양의 산소를 공급할 수 있도록 한다.In addition, in addition to the recycling oxygen line (L2), another oxygen line (L6) for directly supplying the oxygen generated in the oxygen generator (9) is installed as the pure oxygen activated sludge tank (3). To be supplied.
상기 순산소활성오니조(3)의 후단으로는 침전조(4)가 연결되어 있는데, 이 침전조(4)의 하단에는 침전오니를 순산소활성오니조(3)로 반송시키는 반송라인(L4) 및 펌프(P2)와, 잉여오니를 폐기시키기 위한 배출라인(L5)이 설치되어 있다.A rear end of the pure oxygen active sludge tank 3 is connected to a settling tank 4, and at the lower end of the precipitation tank 4, a return line L4 for returning the precipitated sludge to the pure oxygen activated sludge tank 3 and The pump P2 and the discharge line L5 for discarding the surplus sludge are provided.
상기 침전조(4)의 후단에 설치된 후오존접촉조(5)와 생물활성탄 흡착분해조(7) 사이에는 완충조(5b)가 설치되어 후오존접촉조(5)의 수위가 일정하게 유지된 상태에서 오존과 반응하도록 함과 아울러 펌프(P3)에 의하여 생물활성탄 흡착분해조(7)로 폐수를 공급시킬 수 있도록 한다.A buffer tank 5b is installed between the after ozone contact tank 5 and the bioactive carbon adsorption decomposition tank 7 installed at the rear end of the precipitation tank 4 so that the water level of the after ozone contact tank 5 is kept constant. In addition to the reaction with ozone in the pump (P3) to be able to supply the wastewater to the bioactive carbon adsorption decomposition tank (7).
아울러, 상기 후오존접촉조(5)에는 브롬촉매를 공급하는 브롬촉매조(5c)가 접속되어 있는데, 이 브롬촉매조(5c)에서 브롬촉매를 투여하므로써 후오존접촉조(5)내에서 미생물처리과정에서 발생된 질소를 제거하여 COD가 높아지는 것을 방지할 수 있도록 한다.In addition, a bromine catalyst tank 5c for supplying a bromine catalyst is connected to the post ozone contact tank 5, and the bromine catalyst is administered in the bromine catalyst tank 5c to allow microorganisms in the post ozone contact tank 5 to be applied. Nitrogen generated during the treatment is removed to prevent the COD from increasing.
이와 같이 구성된 본 실시예는 먼저, 오존공급방식에 있어서 효율이 극대화된 특징을 갖는데, 이는 기존의 오존을 이용한 폐수처리시스템에서는 대기중의 공기를 원료로 하여 오존을 생성시켜서 사용하였으므로 대략 1~2% 농도의 오존을 발생시킬 수 있었으나, 본 발명은 공기압축기(8)에서 압축된 공기를 산소발생기(9)로 공급시켜 압축공기중의 질소는 흡착하고 나머지 산소를 오존발생기(10)로 공급하므로써 즉, 공기중의 산소만을 원료로 하여 오존을 생성시키므로 약 6~8% 정도의 고농도 오존을 발생시킬 수 있어 분압이 높아져 물에 대한 용해도가 높아지므로 전오존접촉조(2) 및 후오존접촉조(5)에서의 오존처리효율이 높아지고 처리속도가 빠르게 된다.The present embodiment configured as described above has the characteristic that the efficiency is maximized in the ozone supply method, which is about 1 to 2 because ozone is generated by using air in the air as a raw material in the wastewater treatment system using the existing ozone. Although ozone at a% concentration could be generated, the present invention supplies the compressed air from the air compressor (8) to the oxygen generator (9) to adsorb nitrogen in the compressed air and to supply the remaining oxygen to the ozone generator (10). That is, since ozone is generated using only oxygen in the air as a raw material, high concentration ozone of about 6 to 8% can be generated, so that partial pressure is increased and solubility in water is increased. The ozone treatment efficiency in (5) becomes high and the treatment speed becomes high.
상기 전오존접촉조(2)는 폐수중의 난분해성 유기물에 오존(O3)을 접촉시키므로써 이를 생물분해성 유기물로 전환시켜 후속되는 생물학적 처리의 효율을 높이는데 기여하기 위한 전처리단계로써, 오존발생기(10)로부터 발생된 고농도의 오존을 오존공급라인(L1)을 통하여 전오존접촉조(2)의 내측 하부에 설치된 산기관(2a)에서 폐수중으로 주입되며, 전오존접촉조(2)의 상부에는 폐수중에서 오존이 분해되고 난 후 환원된 산소를 순산소활성오니조(3)로 공급하기 위한 산소라인(L2)이 설치된다.The pre-ozone contact tank (2) is a pretreatment step for contributing to improving the efficiency of the subsequent biological treatment by contacting ozone (O 3 ) to the non-degradable organic matter in the waste water, to the biodegradable organic matter, ozone generator The high concentration of ozone generated from (10) is injected into the waste water from the diffuser (2a) installed in the inner lower portion of the all ozone contact tank (2) through the ozone supply line (L1), the upper portion of the all ozone contact tank (2) The oxygen line (L2) for supplying the reduced oxygen after the decomposition of ozone in the waste water to the pure oxygen active onyx (3) is installed.
상기 순산소활성오니조(3)는 순산소활성오니조(3)내의 폐수를 펌프(P1)에 의해 순환시키면서 벤튜리(V)를 통해 전.후오존접촉조(2)(5)의 상부로부터 배출되는 산소를 주입하고, 이를 산소. 폐수 공급라인(L3)의 말단에 접속된 회전식 폭기노즐(N)을 통하여 순산소활성오니조(3) 내로 확산 공급시킬 수 있도록 한 것으로, 이는 기존의 공기주입방식 활성오니법에 비하여 액중의 고형 부유물(MLSS)이 1.5~2배가 되어 높은 부하에서의 처리가 가능하므로 폭기조의 용량을 줄일 수 있고, 용존산소가 높아 활성오니의 활성도가 증가하므로 처리효율을 높일 수 있으며, 오니의 침강성이 증대하므로 침전조의 용량을 줄일 수 있고, 오니의 농축성 및 탈수성이 양호하여 오니의 처리가 용이하며, 산소 용해효율이 높아 산소공급을 위한 동력을 절감할 수 있다.The pure oxygen activated sludge tank 3 circulates the wastewater in the pure oxygen activated sludge tank 3 by the pump P1, and the upper part of the front and rear ozone contact tanks 2 and 5 through the venturi V. Inject oxygen released from it, and oxygen it. Through the rotary aeration nozzle (N) connected to the end of the wastewater supply line (L3) to be diffused into the oxygen-oxygen activated tank (3), which is solid in the liquid compared to the conventional air injection type activated sludge method As the suspended solids (MLSS) is 1.5 ~ 2 times, it can be processed under high load, so the capacity of the aeration tank can be reduced, and the active sludge activity is increased due to the high dissolved oxygen, so that the treatment efficiency can be increased, and the sedimentation property of sludge is increased. The capacity of the sedimentation tank can be reduced, the sludge concentration and dehydration are good, and the treatment of sludge is easy, and the oxygen dissipation efficiency is high, thereby reducing the power for oxygen supply.
상기 침전조(4)는 순산소활성오니조(3)에서 넘어온 액중의 고형 부유물을 침강분리하여 상등수는 다음 처리공정으로 보내고, 침전오니는 순환라인(L4)을 통하여 순산소활성오니조(3)로 반송시키면서 일부 잉여오니는 배출라인(L5)으로 배출시켜 폐기시킨다.The sedimentation tank (4) sedimented and separated the solid suspended solids in the liquid from the pure oxygen active sludge tank (3), the supernatant is sent to the next treatment process, the sedimentation sludge is a pure oxygen active sludge tank (3) through the circulation line (L4) Some surplus sludge is discharged to the discharge line (L5) and discarded while being returned.
한편, 후오존접촉조(5)는 상기 순산소활성오니조(3) 및 침전조(4)에서 미생물처리를 끝낸 상등수가 난분해성 유기물의 비율이 높아짐에 따라 이를 다시 생물분해성 유기물로 전환시킴과 동시에 후속되는 처리공정에 활성산소를 공급하기 위해 오존(O3)을 다시 공급하는 곳으로, 여기서 분해되어 산소(O2)로 된 기체는 산소라인(L2)을 통하여 순산소활성오니조(3)로 재공급되어 폐수중으로 폭기된다.On the other hand, after the ozone contact tank (5) is converted to a biodegradable organic material as the supernatant water after the microbial treatment in the pure oxygen active sludge tank (3) and the precipitation tank (4) increases in proportion Where ozone (O 3 ) is supplied again to supply active oxygen to a subsequent treatment process, wherein the gas decomposed to become oxygen (O 2 ) is passed through the oxygen line (L 2). And are aerated in the wastewater.
한편, 후오존접촉조(5)에서 폐수로부터 발생되는 질소는 브롬촉매조(5c)에서 공급된 브롬촉매에 의하여 제거되므로 COD가 높아지는 것을 방지하게 된다.On the other hand, nitrogen generated from the waste water in the after ozone contact tank 5 is removed by the bromine catalyst supplied from the bromine catalyst tank 5c, thereby preventing the COD from increasing.
상기 후오존접촉조(5)에서 오존과 접촉한 폐수는 완충조(5a)를 거쳐 펌프(P3)에 의하여 최종단계인 생물활성탄 흡착분해조(7)로 진행되는데, 본 단계는 상기 후오존접촉조(5)에서 미처 분해되지 못한 유기물을 다시 생물활성탄이 흡착분해 하도록 한 것으로, 이때 폐수중의 미생물은 활성탄층에 흡착된 유기물을 다시 분해 하게 되므로 활성탄의 재생이 이루어져 다시 흡착능력을 갖게 되어 안정된 처리수질을 얻을 수 있다.Waste water contacted with ozone in the after ozone contact tank 5 is passed through a buffer tank 5a to a bioactive carbon adsorption decomposition tank 7, which is the final stage by a pump P3. Bio activated carbon is decomposed and decomposed organic matter which was not decomposed in tank (5). At this time, the microorganisms in the waste water decompose the organic matter adsorbed on the activated carbon layer, so that the activated carbon is regenerated to have adsorption capacity again. Treated water quality can be obtained.
도 2는 본 발명의 다른 실시예를 도시한 것으로, 본 실시예는 부유성 유기물을 다량 함유한 침출수, 분뇨, 각종 축산폐수 등의 고농도 난분해성 폐수의 처리에 적합한 장치인바, 본 실시예는 상기 일 실시예의 전.후오존 접촉조(2)(5), 순산소활성오니조(3), 침전조(4) 및 생물활성탄 흡착분해조(7)가 기본적으로 설치된 점에서 매우 유사하며, 다만, 폐수가 유입되는 전오존접촉조(2)의 전방에 폐수중의 부유물이나 각종 이물질을 1차적으로 응집분리시키기 위한 응집침전조(1)가 구비되고, 후오존접촉조(5)와 생물활성탄 흡착분해조(7) 사이에 촉매산화조(6)가 구비된 특징을 갖는다.Figure 2 shows another embodiment of the present invention, this embodiment is a device suitable for the treatment of high concentration hardly degradable wastewater, such as leachate, manure, various livestock wastewater containing a large amount of floating organic matter, this embodiment is the above Pre and post ozone contact tank (2) (5), pure oxygen activated sludge tank (3), sedimentation tank (4) and bioactive carbon adsorption decomposition tank (7) of one embodiment are very similar in that they are basically provided, A coagulation sedimentation tank 1 for primary coagulation separation of suspended solids and various foreign substances in the waste water is provided in front of the total ozone contact tank 2 into which the waste water is introduced. The catalytic oxidation tank 6 is provided between the tanks 7.
본 실시예에서, 응집침전조(1)는 최초로 폐수가 유입되어 황산 제1철(FeSo4), 염화 제1철(FeCl2) 등의 응집제가 투여되므로써 폐수중의 각종 부유물이나 이물질을 응집 침전시켜 제거한 후 처리수를 전오존접촉조(2)로 공급하게 된다.In this embodiment, the flocculation sedimentation tank (1) is first introduced into the wastewater, and the coagulant such as ferrous sulfate (FeSo 4 ), ferrous chloride (FeCl 2 ) is administered to coagulate and precipitate various suspended matter or foreign matter in the wastewater. After removal, the treated water is supplied to the all ozone contact tank 2.
본 실시예에서 전오존접촉조(2)로부터 후오존접촉조(5)까지 처리과정은 상기 일 실시예에서의 처리과정과 동일하므로 이에 대한 중복설명은 생략하고, 후오존접촉조(5)이후의 처리과정에 대하여 설명하면 다음과 같다.In the present embodiment, the process from the pre-ozone contact tank 2 to the post-ozone contact bath 5 is the same as the process in the above embodiment, and thus, duplicate description thereof is omitted and after the ozone contact bath 5 is omitted. The process of processing is as follows.
상기 후오존접촉조(5)에서 오존과 접촉한 폐수는 완충조(5a)를 거쳐 펌프(P3)에 의하여 촉매산화조(6)로 공급되는데, 이 촉매산화조(6) 내부는 이산화망간(MnO2)의 주촉매 성분과 기타 천이원소의 조촉매 및 담체로 이루어져 있으며, 후오존접촉조(5)에서 오존에 의해 유기물이 분해되고, 일부 잔류오존은 펌프(P3)에 의해 촉매산화조(6)에 유입되면서 촉매층에서 오존이 분해되는 곳에서 생성되는 발생기 산소가 촉매를 활성화시키며, 이 활성촉매에 의해 다시 유기물을 분해하고 촉매는 활성을 잃게 된다.Waste water contacted with ozone in the after ozone contact tank 5 is supplied to the catalytic oxidation tank 6 by a pump P3 through a buffer tank 5a, and the inside of the catalytic oxidation tank 6 is manganese dioxide (MnO). It consists of the main catalyst component of 2 ) and the promoter and carrier of other transition elements, and organic matter is decomposed by ozone in the post ozone contact tank (5), and some residual ozone is catalyzed by the pump (P3). ), The generator oxygen generated in the place where ozone is decomposed in the catalyst layer activates the catalyst, and the active catalyst decomposes the organic matter again and the catalyst loses activity.
상기 촉매산화조(6)에서는 상기한 반응이 계속되면서 폐수중의 오염물질을 제거하게 된다.In the catalytic oxidation tank 6, the reaction continues to remove contaminants in the wastewater.
본 실시예의 최종단계도 상기 일실시예의 최종단계와 유사한 것으로, 이는 상기 촉매산화조(6)에서 미분해된 유기물을 다시 생물활성탄이 흡착. 분해하게 되는 것으로, 이때 폐수중에는 촉매산화조(6)에서 오존이 분해되면서 환원된 산소에 의해 용존산소가 일정량 유지되므로 이에 의하여 미생물이 생장하게 되는 것이며, 이 미생물에 의해 활성탄층에 흡착된 유기물이 다시 분해되어지므로 활성탄층은 다시 흡착능력이 복원되어 지속적으로 안정된 처리수질을 얻을 수 있다.The final step of this embodiment is also similar to the last step of the embodiment, which is bio-activated carbon is adsorbed again the undecomposed organic matter in the catalytic oxidation tank (6). In this case, since the dissolved oxygen is maintained in the waste water by the reduced oxygen as ozone is decomposed in the catalytic oxidation tank 6, microorganisms are thereby grown, and the organic matter adsorbed by the activated carbon layer is As it is decomposed again, the activated carbon layer is restored to its adsorption capacity, thereby obtaining a stable water quality.
본 발명은 압축공기를 산소발생기에 공급하여 공기중의 질소를 흡착제거하고 난 산소를 오존발생기를 거쳐 고농도의 오존으로 생성시켜 피처리수가 유입되어지는 전오존접촉조와 후오존접촉조로 동시 공급시키므로써 난분해성 유기물을 생물분해성 유기물로 전환시켜 폐수의 생물학적 처리효율을 향상시킬 수 있는 효과가 있고, 폐수와 반응후 환원된 산소는 산소라인을 통하여 순산소활성오니조로 재공급하므로써 폐수중의 용존산소량을 높여 활성오니의 활성도가 증가하므로 처리효율을 향상시킴과 더불어 시스템을 경제적으로 운용할 수 있으며, 오존에 의하여 폐수의 효과적인 색도제거 및 살균작용이 용이하고 기존의 시스템에서와 같은 산화제 등이 처리수에 포함되지 않으므로 2차오염이 없는 환경친화적인 폐수처리시스템을 제공할 수 있고, 미생물처리와 고급산화(오존산화 및 촉매산화)를 동시에 이용하므로써 매우 좋은 처리수질을 얻을 수 있는 유용한 효과를 갖는다.The present invention is to supply the compressed air to the oxygen generator by adsorbing and removing the nitrogen in the air to generate a high concentration of ozone through the ozone generator to simultaneously supply to the pre-ozone contact tank and the post-ozone contact tank into which the water to be treated is introduced. It has the effect of improving the biological treatment efficiency of wastewater by converting hardly degradable organics into biodegradable organics, and reduced oxygen in the wastewater by re-supplying the reduced oxygen after reaction with the wastewater through the oxygen line to the pure oxygen activated sludge. As the activity of activated sludge increases, the treatment efficiency can be improved and the system can be operated economically.Effective removal of color and sterilization of wastewater by ozone is easy, and the oxidizing agent as in the existing system is applied to the treated water. As it is not included, it can provide an environmentally friendly wastewater treatment system without secondary pollution. And it has a beneficial effect you can get a very good quality of the treated water By using microbial treatment and advanced oxidation (oxidation and ozone oxidation catalyst) at the same time.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100367219B1 (en) * | 1999-02-09 | 2003-01-14 | 엘지건설 주식회사 | An equipment of advanced drinking water treatment for the control of micro-pollutants |
| KR100414580B1 (en) * | 2001-04-10 | 2004-01-07 | 주식회사 아이이아이 | A purification system for a waste water of livestock |
| KR100462943B1 (en) * | 2002-10-07 | 2004-12-23 | 주식회사 아이이아이 | The Waste disposal system |
| KR100475451B1 (en) * | 2002-10-07 | 2005-03-10 | 주식회사 아이이아이 | The treatment system for purifying |
| KR101125143B1 (en) * | 2009-07-10 | 2012-03-19 | 주식회사 한국한신테크노 | Industrial waste, waste water Sludge, Garbage disposal machine |
| KR101978076B1 (en) * | 2017-12-29 | 2019-05-13 | 세종대학교산학협력단 | Bio activated carbon management system in water treatment process |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100469317B1 (en) * | 2002-11-26 | 2005-01-31 | 김경진 | System for Advanced Wastewater Treatment using ozone |
| WO2011065805A2 (en) * | 2009-11-30 | 2011-06-03 | (주)에이알케이 | Exhaust oxygen recycling apparatus for ozone treatment equipment, and ozone-using system having same |
| CN102725050A (en) * | 2009-11-30 | 2012-10-10 | 株式会社Ark | Exhaust oxygen recycling apparatus for ozone treatment equipment, and ozone-using system having same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0663571A (en) * | 1992-08-24 | 1994-03-08 | Meidensha Corp | Ozone-bioactive carbon treatment device |
| JPH06154792A (en) * | 1992-11-26 | 1994-06-03 | Kobe Steel Ltd | Biomembrane filter |
| US5622750A (en) * | 1994-10-31 | 1997-04-22 | Lucent Technologies Inc. | Aerosol process for the manufacture of planar waveguides |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100367219B1 (en) * | 1999-02-09 | 2003-01-14 | 엘지건설 주식회사 | An equipment of advanced drinking water treatment for the control of micro-pollutants |
| KR100414580B1 (en) * | 2001-04-10 | 2004-01-07 | 주식회사 아이이아이 | A purification system for a waste water of livestock |
| KR100462943B1 (en) * | 2002-10-07 | 2004-12-23 | 주식회사 아이이아이 | The Waste disposal system |
| KR100475451B1 (en) * | 2002-10-07 | 2005-03-10 | 주식회사 아이이아이 | The treatment system for purifying |
| KR101125143B1 (en) * | 2009-07-10 | 2012-03-19 | 주식회사 한국한신테크노 | Industrial waste, waste water Sludge, Garbage disposal machine |
| KR101978076B1 (en) * | 2017-12-29 | 2019-05-13 | 세종대학교산학협력단 | Bio activated carbon management system in water treatment process |
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