KR20000037728A - Treatment method of wastewater - Google Patents

Treatment method of wastewater Download PDF

Info

Publication number
KR20000037728A
KR20000037728A KR1019980052453A KR19980052453A KR20000037728A KR 20000037728 A KR20000037728 A KR 20000037728A KR 1019980052453 A KR1019980052453 A KR 1019980052453A KR 19980052453 A KR19980052453 A KR 19980052453A KR 20000037728 A KR20000037728 A KR 20000037728A
Authority
KR
South Korea
Prior art keywords
tank
wastewater
aeration
aeration tank
sewage
Prior art date
Application number
KR1019980052453A
Other languages
Korean (ko)
Other versions
KR100321363B1 (en
Inventor
조태숙
전항배
Original Assignee
남정현
주식회사 대우엔지니어링
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 남정현, 주식회사 대우엔지니어링 filed Critical 남정현
Priority to KR1019980052453A priority Critical patent/KR100321363B1/en
Publication of KR20000037728A publication Critical patent/KR20000037728A/en
Application granted granted Critical
Publication of KR100321363B1 publication Critical patent/KR100321363B1/en

Links

Classifications

    • 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
    • C02F3/302—Nitrification and denitrification treatment
    • C02F3/305—Nitrification and denitrification treatment characterised by the denitrification
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • 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
    • C02F3/308—Biological phosphorus removal
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/38—Organic compounds containing nitrogen

Abstract

PURPOSE: A treatment method of wastewater including organic matters and nitrogen compounds is provided, which is characterized in that a reaction tank and a settling pond are installed, and sludge is used for supplying electrons. CONSTITUTION: Sludge which is returned from the second aeration tank(18) flows in the settling pond(10), and wastewater, which grit is removed, flows into contacting tank(12) to separate organic matters and ammonium nitrate. The ammonium nitrate is nitrified by reacting with autotropic bacteria which stick to the media in the first aeration tank(14). Organic matters and nitric nitrogen, which are adsorbed by sludge, are denitrified in the denitrification tank(14), and the second aeration tank(18) is used for aerating and settling in anaerobic condition. The extracted phosphorus in the contacting tank(12) is removed by controlling solid retention time.

Description

하·폐수 처리방법Wastewater treatment method

본 발명은 하·폐수중의 질소 및 인을 제거하는 방법에 관한 것으로, 상세하게는 도시하수, 가축폐수, 산업폐수 중에 존재하는 유기물 뿐만 아니라 질소와 인의 제거효율을 현저하게 개선시킴으로써 하천의 부영양화를 방지시키게 하는 하·폐수 처리방법에 관한 것이다.The present invention relates to a method for removing nitrogen and phosphorus from sewage and wastewater, and more particularly, to improve eutrophication of streams by significantly improving the removal efficiency of nitrogen and phosphorus as well as organic matter present in municipal sewage, livestock wastewater and industrial wastewater. It relates to a sewage and wastewater treatment method to prevent.

질소와 인이 하천, 연안바다 그리고 저수지 등의 수역에 축적되면 부영양화가 발생되어 이러한 영양염류 등을 먹이로 하는 조류가 과잉 번식하게 됨은 주지된 바와 같다.As nitrogen and phosphorus accumulate in rivers, coastal seas and reservoirs, it is well known that eutrophication occurs, causing the algae that feed these nutrients to multiply.

이 과정은 자연계에서는 원만하게 진행되지만 생활하수, 축산폐수, 산업폐수 등이 대량으로 유입되면 자연의 자연정화 능력을 넘어서게 되어 결국 녹조, 적조와 같은 부영양화가 급속히 진행되어 하천이나 저수지 등의 수중산소농도를 고갈시켜 수중 생태계의 오염 및 부패를 촉진시키게 된다.This process proceeds smoothly in the natural world, but when large amounts of domestic sewage, livestock waste, and industrial wastewater flow in, it goes beyond the natural purification capacity of nature. Eventually, eutrophication such as green algae and red tide rapidly progresses, and the concentration of underwater oxygen in rivers and reservoirs. Depletion of water will promote pollution and decay of the aquatic ecosystem.

따라서 부영양화를 방지하기 위하여는 하·폐수 내의 영양염류 성분이 하천 등의 수역으로 유입되기 전에 제거되어져야 하는 것이다.Therefore, in order to prevent eutrophication, nutrient components in the sewage and wastewater have to be removed before they enter the body of the river.

이러한 하·폐수 중의 질소 및 인을 처리하기 위한 방법으로는 물리화학적 처리방법과 생물학적 처리방법이 있다.Methods for treating nitrogen and phosphorus in sewage and wastewater include physicochemical treatment and biological treatment.

물리화학적 처리방법은 폐수의 수소이온농도를 상승시키면서 공기를 주입하여 질소를 암모니아 상태로 형성시키는 방법과 이온교환물질을 사용한 선택적 흡착방법으로 질소를 처리하고 소석회 등의 응집제를 사용하여 인을 침전처리시키는 방법 등이다.The physicochemical treatment method involves injecting air while raising the concentration of hydrogen ions in the wastewater to form nitrogen in the ammonia state, and treating the nitrogen with selective adsorption using ion-exchange materials, and precipitating phosphorus using flocculants such as slaked lime. And the like.

생물학적 처리방법은 바텐포 공정, A/O, A2O 그리고 회분식(SBR:Sequencing Batch Reactor) 공정등으로 미생물을 이용하여, 질소의 경우 1차 침전조에서 고형 유기물을 침전 및 분리시킨 다음 용존상태의 암모니아성 질소와 유기물 형태의 질소를 호기성 조건하에서 호기성 미생물에 의해 질산화시키고, 질산염을 탈질화 과정 즉, 준혐기 미생물에 의해 질소기체로 환원시키는 것이다.Biological treatments include microorganisms such as battenso process, A / O, A 2 O and SBR (Sequencing Batch Reactor) process. In case of nitrogen, solid organic matter is precipitated and separated in the primary settling tank, and then dissolved Ammonia nitrogen and nitrogen in organic form are nitrified by aerobic microorganisms under aerobic conditions, and nitrates are reduced to nitrogen gas by denitrification, i.e., quasi-anaerobic microorganisms.

상술된 바와 같이 폐수를 정화하기 위한 방법으로는 물리화학적 방법과 생물학적 처리방법 등이 있으며, 이를 통하여 부영양화에 따른 수역의 오염을 방지시키고 있다.As described above, methods for purifying wastewater include physicochemical methods and biological treatment methods, thereby preventing contamination of the water caused by eutrophication.

그러나, 물리화학적 처리방법은 처리효율이 온도에 민감하여 일정하지가 않고 처리비용이 많이 소요되는 문제점이 있다.However, the physicochemical treatment method has a problem in that the treatment efficiency is not constant because it is sensitive to temperature and the treatment cost is high.

또한, 생물학적 처리방법에 있어서는 질소처리공정에서 폐수 중의 유기물이 호기성 상태에서 대부분 분해되어 후속되는 준혐기성 탈질공정에서는 유기물이 존재하지 않아 미생물이 내생호흡을 하게되므로 질소제거의 속도가 매우 느리게 되며, 이에 의해 일정량의 질소를 탈질시키기 위하여는 설비 자체가 대형화되어야 하는 문제점이 있었던 것이다.In addition, in the biological treatment method, the organic matter in the wastewater is decomposed mostly in the aerobic state in the nitrogen treatment process, and in the subsequent quasi-anaerobic denitrification process, the organic matter is absent because the organic matter does not exist, so the rate of nitrogen removal is very slow. In order to denitrate a certain amount of nitrogen, the facility itself had to be enlarged.

이는 종래의 하·폐수 공법이 유기물질의 제거를 주된 목적으로 하는 타국의 공법으로, 유기물질의 농도가 낮고 질소농도는 상대적으로 높은 우리나라 하수의 특성에 적합하지 않았던 것이어서 부영양화의 요인이 되는 상기 질소와 인과 같은 영양염류 제거에는 한계가 있었던 것이다.This is a process of other countries where the conventional sewage and wastewater method is mainly used to remove organic substances. The nitrogen, which is a factor of eutrophication, was not suitable for the characteristics of Korean sewage with a low concentration of organic substances and a relatively high nitrogen concentration. There was a limit to the removal of nutrients such as wine.

그 실례로서, 종래의 처리방법에 의할 경우 질소제거율은 10-40% 이고, 인의 제거율은 5-20% 정도인 것으로 확인되었으며, 바텐포 공정, A/O, A2O 공정들은 폐수처리효율을 증가시키기 위해 내적 순환량을 폐수 유입량의 4배가량으로 유지하여야 하기 때문에 운영이 복잡하고 과도한 설비가 요구되며, SBR 공정은 폭기조 하나로 1차 침전지, 폭기조, 2차 침전지의 역할을 수행하기 때문에 연속적으로 발생하는 대규모 폐수의 처리가 곤란할 뿐더러, 탈질반응에 필요한 유기물질을 공급해주기 위해서는 일부 원수를 사용하거나 외부에서 유기물을 공급해 주어야 하는 문제점이 있었던 것이다.For example, the nitrogen removal rate is 10-40% and the phosphorus removal rate is about 5-20% according to the conventional treatment method, and the wastewater treatment efficiency of the Batenpo process, A / O, and A 2 O processes is Since the internal circulation must be maintained at about four times the amount of wastewater inflow, the operation is complicated and excessive facilities are required.The SBR process is continuously performed because it acts as the primary sedimentation basin, the aeration basin and the secondary sedimentation basin. In addition, it is difficult to treat the large-scale wastewater generated, and in order to supply organic materials necessary for denitrification, some raw water or organic matters have to be supplied from the outside.

이에 본 발명은 상술된 문제점을 해소하기 위하여 안출된 것으로,유기물질의 농도가 낮고 질소농도는 상대적으로 높은 우리나라 하수의 특성에마추어 하·폐수 중의 유기물, 질소, 인을 동시에 처리하는 방법을 제공함에 그 목적이 있는 것이다.Accordingly, the present invention has been made to solve the above-described problems, and provides a method for simultaneously treating organic matter, nitrogen, and phosphorus in sewage and wastewater in accordance with the characteristics of Korean sewage with low concentrations of organic substances and relatively high nitrogen concentrations. The purpose is.

이를 위한 본 발명은 연속식과 회분식의 장점을 혼합하여 전탈질 공정과 후탈질공정의 단점을 배제한 것으로, 유기물질과 염양염류를 동시에 제거할 수 있는 적어도 하나 이상의 반응조와 침사지, 접촉조를 직렬로 연결하고 반응 슬러지가 전자공여체로서 이용되도록 한 것이다.To this end, the present invention eliminates the disadvantages of the pre-denitrification process and the post-denitrification process by mixing the advantages of the continuous and the batch type, and connects at least one reaction tank, a needle and a contact tank in series to remove organic substances and salt salts at the same time. The reaction sludge is used as an electron donor.

또한, 접촉조가 1차 침전지 및 균등조로서의 역할을 하게 하고, 2차 침전지는 제 2 폭기조가 수행하도록 하였으며, 접촉조와 탈질조는 상향류식으로 운영하여 분리효율을 증가시킨 것이다.In addition, the contact tank serves as a primary sedimentation basin and an equalization tank, the secondary sedimentation basin is to be performed by the second aeration tank, the contact tank and the denitrification tank is operated in an upflow manner to increase the separation efficiency.

따라서, 이러한 본 발명에 의해 유기물질과 인 뿐만 아니라 국내 하·폐수에서 문제가 되고 있는 암모니아성 질소를 동시에 제거할 수 있으며, 제 2 폭기조는 반응조와 침전조로 운영이 가능하여 부지활용을 극대화 시킬 수 있을 뿐더러, 유입 유기물질을 탈질반응의 전자공여체로 이용하여 외부의 전자공여체를 별도로 마련할 필요가 없거나 그 양을 상당히 줄일 수 있어 운영비가 절감되는 것이다Therefore, the present invention can simultaneously remove ammonia nitrogen, which is a problem in domestic sewage and wastewater, as well as organic substances and phosphorus, and the second aeration tank can be operated as a reaction tank and a precipitation tank to maximize site utilization. In addition, it is not necessary to prepare an external electron donor by using influent organic material as an electron donor for denitrification, or the amount thereof can be considerably reduced, thereby reducing operating costs.

도 1 은 본 발명에 따른 하·폐수 처리방법을 나타낸 설명도이다.1 is an explanatory diagram showing a wastewater treatment method according to the present invention.

〈 도면의 주요부분에 대한 부호의 설명 〉<Description of reference numerals for the main parts of the drawings>

10 - 침사지, 12 - 접촉조,10-settlement, 12-contact bath,

14 - 제 1 폭기조, 16 - 탈질조,14-first aeration tank, 16-denitrification tank,

18 - 제 2 폭기조.18-the second aeration tank.

이하 첨부된 예시도면과 함께 본 발명을 설명하면 다음과 같다.Hereinafter, the present invention will be described with reference to the accompanying drawings.

본 발명은 제 2 폭기조(18)로부터 슬러지를 반송시키고 이 슬러지와 더불어 침사지(10)에 유입되어 그릿(grit)이 제거된 하·폐수를 접촉조(12)에 상방향으로 유입시켜 유기물질과 암모니아성 질소를 분리시키는 단계와; 상기 암모니아성 질소를 제 1 폭기조(14)에서 메디아상의 고농도 질산화 미생물과의 반응으로 질산화 시키는 단계와; 상기 접촉조(12)에서 상기 제 2 폭기조(18)로부터 반송된 슬러지에 의해 흡착된 유기물질과 질산성 질소를 이용하여 상기 제 1 폭기조(14)를 통과한 하·폐수를 준혐기성 반응조인 탈질조(14)에 상방향으로 유입시켜 탈질화시키는 단계와; 상기 탈질화된 하·폐수를 상기 제 2 폭기조(18)에서 폭기시킴과 더불어 상기 제 2 폭기조(18)를 폭기조와 침전조로 병행하여 사용하는 단계와; 상기 제 2 폭기조(18)의 MLSS(Mixed Liquor Suspended Solid)를 상기 접촉조(12)로 반송시키는 단계로 이루어진 하·폐수 처리방법이다.The present invention transfers the sludge from the second aeration tank (18) and flows the sewage and wastewater in which the grit is removed by flowing into the settling paper (10) together with the sludge to the contact tank (12) upwards. Separating ammonia nitrogen; Nitrifying the ammonia nitrogen in a first aeration tank by reaction with a high concentration of nitrifying microorganisms on the media; Denitrification, which is a semi-anaerobic reaction tank for the sewage and wastewater that has passed through the first aeration tank 14 by using the organic material adsorbed by the sludge conveyed from the second aeration tank 18 and the nitrate nitrogen in the contact tank 12. Denitrifying by flowing upwardly into the bath (14); Aeration of the denitrified sewage and wastewater in the second aeration tank (18) and using the second aeration tank (18) in parallel with the aeration tank and the settling tank; It is a wastewater treatment method comprising the step of conveying the mixed Liquor Suspended Solid (MLSS) of the second aeration tank (18) to the contact tank (12).

여기서, 상기 탈질화 단계는 상기 접촉의 슬러지를 상향류식으로 유입시키며, 여기에 상기 제 1 폭기조(14)를 통과한 하·폐수를 혼합시켜 수행되어지는 것을 특징으로 한다.Here, the denitrification step is characterized in that the sludge of the contact flows in an upward flow, it is carried out by mixing the waste water and the waste water passed through the first aeration tank (14).

또한, 상기 접촉조(12)와, 유기성분과 영양염류를 동시에 제거할 수 있는 적어도 하나 이상으로 된 제 1 폭기조(14)이고 준혐기성조이며 제 2 폭기조(18)인 반응조를 직렬로 연결하는 한편, 상기 제 2 폭기조(18)로부터 상기 접촉조(12)로 반송이 이루어지도록 된 것을 특징으로 한다.In addition, while connecting the contact tank 12 and the reaction tank of at least one of the first aeration tank 14, a semi-anaerobic tank, the second aeration tank 18, which can simultaneously remove organic components and nutrients, It is characterized in that the conveyance from the second aeration tank 18 to the contact tank 12 is made.

여기서, 제 1 폭기조(14)는 암모니아성 질소를 질산화 시킬수 있도록 메디아에 부착된 미생물을 포함하는 것을 특징으로 한다.Here, the first aeration tank 14 is characterized in that it comprises a microorganism attached to the media to nitrify the ammonia nitrogen.

한편, 제 2 폭기조(18)는 이를 제어하여 폭기조, 준혐기성조 그리고 침전조로 병행하여 사용되는 것을 특징으로 한다.On the other hand, the second aeration tank 18 is characterized in that it is used in parallel to aeration tank, semi-anaerobic tank and sedimentation tank to control this.

또한, 상기 접촉조(12)는 상향류식인 준혐기성조인 탈질조(14)와 연결되어 상기 접촉조(12)의 슬러지가 상기 탈질조(14)로 이송되어지는 것을 특징으로 한다.In addition, the contact tank 12 is characterized in that the sludge of the contact tank 12 is connected to the denitrification tank 14 is connected to the denitrification tank 14 of the upflow semi-anaerobic tank.

예시도면 도 1 은 본 발명에 따른 하·폐수 방법을 나타낸 설명도로서, 본 발명은 유기물질의 농도가 낮고 질소농도는 상대적으로 높은 우리나라 하수의 특성에마추어 하·폐수 중의 유기물, 질소, 인을 동시에 처리하는 방법을 제공하고 있다.Exemplary drawing Figure 1 is an explanatory view showing the sewage and wastewater method according to the present invention, the present invention is characterized in that the organic matter, nitrogen, phosphorus in the sewage and wastewater in accordance with the characteristics of the sewage of the sewage and wastewater of the Korea is relatively high and nitrogen concentration is relatively high At the same time, it provides a method for processing.

이를 위한 본 발명은 유기물질과 영양염류를 동시에 저거할 수 있는 적어도 하나 이상의 반응조와 침사지(10), 접촉조(12)를 직렬로 연결하여 따로 침전조를 두지 않고 후 단부의 반응조에서 슬러지가 상기 접촉조(12)로 반송되도록 한 것이다.The present invention for this purpose is to connect the at least one reaction tank and the immersion paper 10, the contact tank 12 in series that can simultaneously eliminate organic substances and nutrients in series without placing a sedimentation tank, the sludge in the reaction tank at the rear end of the contact It is to be conveyed to the tank 12.

여기서, 상기 적어도 하나 이상인 반응조는 제 1 폭기조(14), 준혐기성 탈질조(14), 제 2 폭기조(18)가 직렬로 연결된 것이며, 제 2 폭기조(18)는 하나의 반응조로 짐전지 및 폭기조와 준혐기성조로서의 기능을 함께 수행한다.Here, the at least one reaction tank is the first aeration tank 14, the quasi-anaerobic denitrification tank 14, the second aeration tank 18 is connected in series, the second aeration tank 18 is a load cell and aeration tank in one reaction tank And perform as an anaerobic tank.

상기 제 1 콕기조에 준혐기성조가 직렬로 연결되어지며, 이 준혐기성조는 질산성 질소가 존재하여 있고 산소는 존재하지 않는 조건에서 탈질화 작용을 수행한다.A quasi-anaerobic tank is connected in series to the first cock group, and the quasi-anaerobic tank performs denitrification under the condition that nitrate nitrogen is present and oxygen is not present.

탈질화 과정에서는 질산성 질소가 전자수용체로 작용하면서 질소개스로 탈질된다.In denitrification, nitrate nitrogen acts as an electron acceptor and denitrifies with nitrogen gas.

특히, 이 반응에서 탄소원으로 종래 메탄올이 이용되었으나 본 발명에서는 접촉조(12)에서 원수의 유기물을 제 2 폭기조(18)로부터 반송된 슬러지에 흡착시켜 형성된 탄소원을 사용한다.In particular, although methanol was conventionally used as a carbon source in this reaction, the present invention uses a carbon source formed by adsorbing organic matter of raw water to the sludge conveyed from the second aeration tank 18 in the contact tank 12.

따라서, 본 발명에서는 메탄올과 같은 외부전자공여체의 공급에 따른 운영비용을 절감할 수 있는 것이며, 이는 본 발명이 전잘질 방법과 후탈질 방법의 장점들만을 결합시킨 것이기 때문이다.Therefore, in the present invention, it is possible to reduce the operating cost according to the supply of an external electron donor such as methanol, because the present invention combines only the advantages of the pre-gumming method and the post-denitrification method.

이를 좀더 상세히 설명하면, 탈질화 공정은 전탈질공정과 후탈질공정으로 대별되며, 후탈질공정은 반응조의 크기가 작고 유출수의 수질이 균일하다는 장점이 있다.In more detail, the denitrification process is roughly classified into a total denitrification process and a post denitrification process, and the post denitrification process has advantages in that the size of the reaction tank is small and the water quality of the effluent is uniform.

그러나, 탈질반응조가 질산화 반응조의 후반부에 위치하고 있기 때문에, 탈질반응조내에는 분해되기 쉬운 유기물의 양이 적어 메탄올과같은 전자공여체를 외부에서 별도로 주입해 주어야 하므로 비경제적이라는 단점이 있다.However, since the denitrification tank is located in the latter part of the nitrification tank, the amount of organic matter which is easily decomposed in the denitrification tank is small, and thus an electron donor such as methanol has to be injected separately from the outside.

반면에, 전탈질공정은 유입되는 폐수내의 유기물을 탈질에 필요한 전자공여체로 이용하기 때문에 별도의 전자공여체를 외부에서 별도로 주입할 필요가 없다는장점이 있다.On the other hand, the total denitrification process has the advantage that it is not necessary to inject a separate electron donor separately from the outside because the organic material in the influent wastewater is used as an electron donor for denitrification.

그러나, 메탄올을 사용하는 후탈질공정보다 질산화조가 탈질조(14) 후반부에 위치하므로 질산화조에서 형성된 이질산염을 탈질조(14)로 반송시킬 필요가 있으며 이 경우 반송량이 유입수의 4배 까지 이르는 등 많은 동력을 필요로 하는 단점을 가지는 것이다.However, since the nitrification tank is located in the latter part of the denitrification tank 14 rather than the post denitrification process using methanol, it is necessary to return the dinitrate formed in the nitrification tank to the denitrification tank 14, in which case the conveying amount reaches four times as much as the influent. It has the disadvantage of requiring a lot of power.

이러한 상황 하에 본 발명은 상기 전탈질 방법과 후탈질 방법의 단점을 배제하여 외부 유기물의 공급과 대용량의 반송 없이 원수자체의 유기물질을 이용하여 탈질시킬 수 있도록 한 것이다.Under this situation, the present invention is to eliminate the disadvantages of the pre-denitrification method and post-denitrification method to be denitrified by using the organic material of the raw water itself without supplying the external organic material and the return of a large amount.

한편, 유입 유기물질이 낮은 국내 하수특성을 고려하여 1 차 짐전지를 생략하고 접촉조(12)가 균등조 및 1 차 침전지로서의 역할을 대신하게 되는 것이며, 2 차 침전지는 제 2 폭기조(18)가 대신하며, 이것은 연속회분식으로 운영되기 때문에 침전효율이 높을뿐더러 폭기조로서의 활용으로 부지의 활용성을 배가시킬 수 있는 것이다.On the other hand, considering the domestic sewage characteristics of low influent organic material, the primary load cell is omitted, and the contact tank 12 replaces the role of the equalization tank and the primary sedimentation basin, and the secondary sedimentation basin is the second aeration tank 18. In place of this, it is operated in a continuous batch mode, which not only has high sedimentation efficiency but also doubles the utilization of the site by using as an aeration tank.

또한, 접촉조(12)는 탈질조(14)와 마찬가지로 상향류식으로 운영하여, 원수의 유기물과 반송된 미생물플록과 충돌 및 접촉빈도를 크게하여 분리효율을 향상시켰다.In addition, the contact tank 12 was operated in an upflow manner similar to the denitrification tank 14 to improve the separation efficiency by increasing collision and contact frequency with the organic matter and the returned microbial flocs.

제 1 폭기조(14)는 접촉조(12)에서 유기물질을분리시킨 상징수 내에 포함된 암모니아성질소를 질산화시키는 역할을 수행하며 질산화 미생물을 효과적으로 배양할 수 있도록 메디아를 첨가한다.The first aeration tank 14 serves to nitrify the ammonia nitrogen contained in the symbolic water from which the organic material is separated from the contact tank 12 and adds media to effectively cultivate the nitrifying microorganisms.

메이아는 질산화미생물을 고농도로 유지할 수 있어 질산화율을 높일 수 있으며, 독성물질 유입시 부유성 성장 질산화 미생물보다 독성에 강한 특성이 있다.Maya is able to maintain nitrification microorganisms at high concentrations, which can increase nitrification rate, and is more toxic than floatable growth nitrification microorganisms when toxic substances are introduced.

탈질조(14)는 부유성 성장 상향류식 반응조로 운영함으로써, 고농도 미생물 유지 및 플러그 플로우(Plug flow)를 유지할 수 있어 접촉조(12)에서 분리된 원수의 유기물과 제 1 폭기조(14)에서 유입되는 질산성 질소가 상기 탈질조(14)로 유입될 때 유기물 농도를 크게 할 수 있게 되는 것이다.The denitrification tank 14 is operated as a floating growth upflow reactor to maintain a high concentration of microorganisms and maintain a plug flow, so that the organic matter of the raw water separated from the contact tank 12 and the first aeration tank 14 are introduced. When nitrate nitrogen is introduced into the denitrification tank 14, the organic substance concentration can be increased.

제 2 폭기조(18)는 반응하지 않고 잔류된 유기물질과 암모니아성 질소를 제거하고 인을 섭취하여 제거시키며, 미생물을 내생상태로 만들어 접촉조(12)로 유입될 때 유기물을 빨리 흡착시킬 수 있게 하는 것이다.The second aeration tank 18 removes organic substances and ammonia nitrogen which remain unreacted, intakes phosphorus to remove them, and makes the microorganisms endogenous so as to quickly adsorb organic substances when entering the contact tank 12. It is.

이러한 본 발명에 의한 하·폐수의 처리작용을 설명하면 다음과 같다.Referring to the treatment of sewage and wastewater according to the present invention as follows.

먼저, 하·폐수 원수는 침사지(10)를 통과하며, 여기에서 모래와 기타 큰 덩어리 물질이 침전되어 제거된다.First, the sewage and wastewater passes through the settlement 10, where sand and other large lumps of material are precipitated and removed.

침사지(10)를 통과한 하수가 접촉조(12)로 유입되어짐과 동시에, 제 2 폭기조(18)로부터 반송슬러지가 유입 혼합되어 상방향으로 흐르면서 유기물질과 암모니아성 질소를 분리한다.The sewage that has passed through the settling basin 10 is introduced into the contact tank 12, and at the same time, the conveying sludge flows in from the second aeration tank 18 and flows upward to separate organic substances and ammonia nitrogen.

접촉조(12)에서는 분리된 원수의 유기물질을 흡착한 활성슬러지를 상향류식 탈질조(14)로 이송하며, 접촉조(12)를 통과한 하·폐수에는 흡착되지 않은 미량의 유기물질과 질소 및 인이 용존되어 있다.The contact tank 12 transfers the activated sludge adsorbed the organic material of the separated raw water to the upflow denitrification tank 14, and traces of organic substances and nitrogen that are not adsorbed to the sewage and wastewater passing through the contact tank 12. And phosphorus are dissolved.

어러한 저농도의 유기물질과 영양염류를 함유하는 하·폐수는 이들 성분을 동시에 처리할 수 있는 제 1 폭기조(14), 준혐기성조인 탈질조(14), 그리고 제 2 폭기조(18)로 구성된 일련의 반응조로 유입된다.Sewage and wastewater containing such low concentrations of organic substances and nutrients is a series consisting of a first aeration tank 14 capable of simultaneously treating these components, a deaeration tank 14 which is a semi-anaerobic tank, and a second aeration tank 18. Flows into the reactor.

제 1 폭기조(14)는 메디아를 이용한 생물막 반응조로 설치되어 있는데, 이 폭기조 내에서는 접촉조(12)를 통과한 암모니아성 질소를 호기성 조건하에서 나이트로소모나스(nitrosomonas)나 나이트로박터(nitrobacrer)와 같은 오토트로픽 박테리아( autotropic bacteria)에 의해 질산성 질소로 산화된다.The first aeration tank 14 is installed as a biofilm reactor using media, in which the ammonia nitrogen passed through the contact tank 12 is subjected to nitrosomonas or nitrobacrer under aerobic conditions. It is oxidized to nitrate nitrogen by autotropic bacteria such as.

제 1 폭기조(14)를 거치면서 형성된 질산성질소는 접촉조(12)에서 약 30 분 정도의 충분한 접촉시간 후 원수의 유기물질을 흡착한 활성슬러지를 전자공여체로 사용하여 준혐기성 반응조인 탈질조(14)에서 탈질화가 된다.Denitrification tank, which is formed through the first aeration tank 14, is a semi-anaerobic reaction tank using activated sludge adsorbed organic material of raw water as an electron donor after a sufficient contact time of about 30 minutes in the contact tank 12. Denitrification occurs at (14).

이때, 접촉조(12)로부터 이송된 유기물질을흡착한 활성슬러지는 탈질조(14)에서 상향류식으로 유입된다.At this time, the activated sludge adsorbed the organic material transferred from the contact tank 12 is introduced into the denitrification tank 14 in an upflow manner.

후속되는 제 2 폭기조(18)는 탈질조(14)에서 완전히 제거되지 않은 유기물질이나 암모니아성 질소를 다시 제거하며, 정화된 처리수가최저수위에서 최고수위에 도달될 때 제 2 폭기조(18)의 폭기장치를 제어하여 침전시킨 후 정화된 처리수를 유출시킴이 바람직하다.Subsequent second aeration tank 18 again removes the organic material or ammonia nitrogen which has not been completely removed from the denitrification tank 14 and when the purified water reaches the highest level at the lowest level, It is preferable to discharge the purified water after controlling the precipitation of the aeration device.

이때, 침전이 진행되고, 슬러지 일부를 폐기시킴과 아울러 처리수를 유출시키는 동안에도 원수가 연속적으로유입되며, 접촉조(12)로의 반송도 계속된다.At this time, sedimentation proceeds, raw water is continuously introduced while discharging a part of the sludge and flowing out the treated water, and the conveyance to the contact tank 12 is also continued.

이러한 방법은 접촉조(12)를 혐기상태로 유지하여 인을 용출시키게 되며 후속되는 호기-준혐기-호기 과정에서 인을 효과적으로섭취하여 제거할 수 잇다.This method keeps the contact tank 12 in an anaerobic state to elute phosphorus and can effectively ingest and remove phosphorus in a subsequent exhalation-quasi-anaerobic process.

이와 같이 섭취된 인은 일정한 SRT(Solid Retention Time)를 조정하여 제거되는 것이며, 상기 제 2 폭기조(18)에서 침전된 슬러지 폐기가 여기에 속하는 것이다.Phosphorus ingested as described above is removed by adjusting a constant solid retention time (SRT), and sludge waste precipitated in the second aeration tank 18 belongs to this.

이러한 본 발명의 하·폐수 처리방법에 따라 유기물질 300mg/l, 총질소 30 mg/l, 총인10 mg/l의 농도인 함성폐수를 유입시킨 결과, 유기물질은 12mg/l 이고 총질소는 2.5mg/l 이며 총인은 1.2mg/l으로 농도가 감소된 것을 확인할 수 있었으며, 그 제거효율은 각각 96%, 92%, 88% 였다.According to the sewage and wastewater treatment method of the present invention, as a result of introducing the wastewater having the concentration of 300 mg / l of organic substance, 30 mg / l of total nitrogen, and 10 mg / l of phosphorus, the organic substance is 12 mg / l and the total nitrogen is 2.5. It was confirmed that the concentration was reduced to 1.2 mg / l total mg / l, the removal efficiency was 96%, 92%, 88%, respectively.

또한, 접촉조의 유기물질은 24mg/l로 92% 정도가 흡착 제거되었음을 확인할 수 있었다.In addition, the organic material of the contact tank was confirmed that the adsorption removal of about 92% at 24mg / l.

상술된 바와 같이 본 발명에 따르면, 본 발명은 유기물질과 인 뿐만 아니라 국내 하·폐수에서 문제가 되고 있는 암모니아성 질소를 동시에 제거할 수 있는 효과가 있으며, 제 2 폭기조는 반응조와 침전조로 운영이 가능하여 부지활용을 극대화 시킬 수 있을뿐더러, 유입 유기물질을 탈질반응의 전자공여체로 이용하여 외부의 전자공여체를 별도로 마련할 필요가 없거나 그 양을 상당히 줄일 수 있어 운영비가 절감되는 효과가 있는 것이다.As described above, according to the present invention, the present invention has the effect of simultaneously removing organic matter and phosphorus as well as ammonia nitrogen which is a problem in domestic sewage and wastewater, and the second aeration tank is operated as a reaction tank and a precipitation tank. In addition, it is possible to maximize the site utilization, and it is not necessary to prepare an external electron donor by using influent organic material as an electron donor for denitrification, or the amount thereof can be considerably reduced, thereby reducing operating costs.

Claims (6)

제 2 폭기조(18)로부터 슬러지를 반송시키고 이 슬러지와 더불어 침사지(10)에 유입되어 그릿(grit)이 제거된 하·폐수를 접촉조(12)에 상방향으로 유입시켜 유기물질과 암모니아성 질소를 분리시키는 단계와; 상기 암모니아성 질소를 제 1 폭기조(14)에서 메디아상의 고농도 질산화 미생물과의 반응으로 질산화 시키는 단계와; 상기 접촉조(12)에서 상기 제 2 폭기조(18)로부터 반송된 슬러지에 의해 흡착된 유기물질과 질산성 질소를 이용하여 상기 제 1 폭기조(14)를 통과한 하·폐수를 준혐기성 반응조인 탈질조(14)에 상방향으로 유입시켜 탈질화시키는 단계와; 상기 탈질화된 하·폐수를 상기 제 2 폭기조(18)에서 폭기시킴과 더불어 상기 제 2 폭기조(18)를 폭기조와 침전조로 병행하여 사용하는 단계와; 상기 제 2 폭기조(18)의 MLSS(Mixed Liquor Suspended Solid)를 상기 접촉조(12)로 반송시키는 단계로 이루어진 하·폐수 처리방법.The sludge is conveyed from the second aeration tank 18 and the sewage and wastewater, which flows into the settlement 10 with the sludge removed, flows upward into the contact tank 12 so that organic matter and ammonia nitrogen. Separating the; Nitrifying the ammonia nitrogen in a first aeration tank by reaction with a high concentration of nitrifying microorganisms on the media; Denitrification, which is a semi-anaerobic reaction tank for the sewage and wastewater that has passed through the first aeration tank 14 by using the organic material adsorbed by the sludge conveyed from the second aeration tank 18 and the nitrate nitrogen in the contact tank 12. Denitrifying by flowing upwardly into the bath (14); Aeration of the denitrified sewage and wastewater in the second aeration tank (18) and using the second aeration tank (18) in parallel with the aeration tank and the settling tank; A method of treating sewage and wastewater, comprising conveying a mixed liquor suspended solid (MLSS) of the second aeration tank (18) to the contact tank (12). 제 1 항에 있어서, 상기 탈질화 단계는 상기 접촉의 슬러지를 상향류식으로 유입시키며, 여기에 상기 제 1 폭기조(14)를 통과한 하·폐수를 혼합시켜 수행되어지는 것을 특징으로 하는 하·폐수의 처리방법.The sewage / wastewater according to claim 1, wherein the denitrification step is carried out by introducing the sludge of the contact in an upflow manner, and mixing sewage and wastewater that have passed through the first aeration tank (14). Treatment method. 제 1 항에 있어서, 상기 접촉조(12)와, 유기성분과 영양염류를 동시에 제거할 수 있는 적어도 하나 이상으로 된 제 1 폭기조(14)이고 준혐기성조이며 제 2 폭기조(18)인 반응조를 직렬로 연결하는 한편, 상기 제 2 폭기조(18)로부터 상기 접촉조(12)로 반송이 이루어지도록 된 것을 특징으로 하는 하·폐수의 처리방법.2. The reactor according to claim 1, wherein the contacting tank (12) and the reaction tank (1) which are at least one of which can remove organic components and nutrients at the same time, which are semi-anaerobic tanks and second aeration tanks (18) in series And a conveyance from the second aeration tank (18) to the contact tank (12) while being connected. 제 1 항에 있어서, 제 2 폭기조(18)는 폭기조, 준혐기성조 그리고 침전조로 병행하여 사용되는 것을 특징으로 하는 하·폐수의 처리방법.The method of claim 1, wherein the second aeration tank (18) is used in combination with an aeration tank, an anaerobic tank, and a sedimentation tank. 제 3 항에 있어서, 상기 접촉조(12)는 상향류식인 준혐기성조인 탈질조(14)와 연결되어 상기 접촉조(12)의 슬러지가 상기 탈질조(14)로 이송되어지는 것을 특징으로 하는 하·폐수의 처리방법.The method of claim 3, wherein the contact tank 12 is connected to the denitrification tank 14, which is an upflow semi-anaerobic tank, characterized in that the sludge of the contact tank 12 is transferred to the denitrification tank 14. Treatment method of sewage and wastewater. 제 3 항에 있어서, 제 1 폭기조(14)는 암모니아성 질소를 질산화 시킬수 있도록 메디아에 부착된 미생물을 포함하는 것을 특징으로 하는 하·폐수의 처리방법.The method of claim 3, wherein the first aeration tank (14) comprises microorganisms attached to the media to nitrify ammonia nitrogen.
KR1019980052453A 1998-12-02 1998-12-02 SBNR : Sequencing Biological Nutrient Removal System. KR100321363B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019980052453A KR100321363B1 (en) 1998-12-02 1998-12-02 SBNR : Sequencing Biological Nutrient Removal System.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019980052453A KR100321363B1 (en) 1998-12-02 1998-12-02 SBNR : Sequencing Biological Nutrient Removal System.

Publications (2)

Publication Number Publication Date
KR20000037728A true KR20000037728A (en) 2000-07-05
KR100321363B1 KR100321363B1 (en) 2002-06-27

Family

ID=19560930

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019980052453A KR100321363B1 (en) 1998-12-02 1998-12-02 SBNR : Sequencing Biological Nutrient Removal System.

Country Status (1)

Country Link
KR (1) KR100321363B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190088777A (en) 2018-01-19 2019-07-29 (주)아름다운환경 Low concentration n2o removing system and low concentration n2o removing method of wastewater treatment plant using the adsorption-decomposer
KR20190088776A (en) 2018-01-19 2019-07-29 (주)아름다운환경 Adsorption-decomposer for removing low concentration n2o of wastewater treatment plant and manufacturing method of adsorption-decomposer

Also Published As

Publication number Publication date
KR100321363B1 (en) 2002-06-27

Similar Documents

Publication Publication Date Title
KR100643775B1 (en) Treatment hybrid process for remove nutrient using floating microorganism
KR101063828B1 (en) Method of wastewater treatment using an anaerobic reactor having a biological nitrification process connected a cation exchange membrane
KR100670231B1 (en) System for processing waste water using rumination sbr
KR100440748B1 (en) High-Rate Live Stock Wastewater Treatment Method using Advanced Treatment Process Hybrid SBAR
KR100632487B1 (en) Gradually operated sequencing batch reactor and method thereof
KR100240801B1 (en) Method for purifying wastewater
KR100572516B1 (en) Wastewater Treatment Method
KR100321346B1 (en) Nutrient removal system by using fixed biofilm
KR20020087799A (en) Method for advanced wastewater treatment using multi-sbr system
KR100640940B1 (en) Continual system for processing waste water
KR19990065434A (en) Wastewater Purification Method
KR100321363B1 (en) SBNR : Sequencing Biological Nutrient Removal System.
KR100438323B1 (en) High intergated Biological Nutrient Removal System
KR100321679B1 (en) Advanced wastewater treatment method
KR100513567B1 (en) Wastewater Purification Apparatus
KR101931346B1 (en) Membrane separation water treatment system with reverse osmosis membrane concentrated water treatment facility
KR20110113448A (en) A hybrid process reactor for a simultaneous removal of ammonia and organics and method of wastewater treatment
KR100325722B1 (en) A treatment method of sewage and wastewater using ozone and oxygen
KR100462578B1 (en) The purification method of an organic waste water with high density
KR100670211B1 (en) Process packed with float media using biosorption mechanism
KR0129831B1 (en) A process for sewage treatment wsing denitrification and dephosphorization
KR960011888B1 (en) Method and apparatus for biological treatment of waste water including nitrogen and phosphorus
KR100202066B1 (en) Wastewater treatment method using biological 3 step digestion process in one reactor
KR100283127B1 (en) Wastewater treatment methods including denitrification and dephosphorization
KR100420301B1 (en) method and equipment for advanced wastewater-treatment

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20130108

Year of fee payment: 12

FPAY Annual fee payment

Payment date: 20140122

Year of fee payment: 13

FPAY Annual fee payment

Payment date: 20141230

Year of fee payment: 14

FPAY Annual fee payment

Payment date: 20161222

Year of fee payment: 16

FPAY Annual fee payment

Payment date: 20180104

Year of fee payment: 17

EXPY Expiration of term