KR102283672B1 - Sewage, wastewater advanced treatment system using steel slag as water treatment filtration material - Google Patents

Sewage, wastewater advanced treatment system using steel slag as water treatment filtration material Download PDF

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KR102283672B1
KR102283672B1 KR1020200161555A KR20200161555A KR102283672B1 KR 102283672 B1 KR102283672 B1 KR 102283672B1 KR 1020200161555 A KR1020200161555 A KR 1020200161555A KR 20200161555 A KR20200161555 A KR 20200161555A KR 102283672 B1 KR102283672 B1 KR 102283672B1
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water
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wastewater
anaerobic
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임남재
정점래
김선호
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한종산업개발 주식회사
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
    • B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/46—Regenerating the filtering material in the filter
    • B01D24/4631—Counter-current flushing, e.g. by air
    • 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
    • C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • 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
    • C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
    • 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
    • C02F1/5227—Processes for facilitating the dissolution of solid flocculants in water
    • 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
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/586—Treatment of water, waste water, or sewage by removing specified dissolved compounds by removing ammoniacal nitrogen
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/10—Packings; Fillings; Grids
    • C02F3/105—Characterized by the chemical composition
    • C02F3/107—Inorganic materials, e.g. sand, silicates
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1205—Particular type of activated sludge processes
    • C02F3/1215—Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1205—Particular type of activated sludge processes
    • C02F3/1221—Particular type of activated sludge processes comprising treatment of the recirculated sludge
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/20—Activated sludge processes using diffusers
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
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  • Water Supply & Treatment (AREA)
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Abstract

The present invention relates to an advanced system for treating sewage and wastewater for introducing an existing filtration system such that sewage and wastewater are continuously treated, and for using a steel slag, which is a byproduct of a steel industry, as a filtering material, instead of a higher-price filtering material for the physical and biochemical treatment. As the steel slag, which has a lower price, is used as the filtering material, instead of the existing higher-price filtering material, a wastewater treatment system allowing the physical and biochemical treatment is provided. Accordingly, the steel slag, which is a lower-price filtering material, is used as the filtering material, such that an economical effect is exhibited. A portion of symbolic water flowing out of a primary sediment tank has no organic material and is subject to a nitric oxidation reaction through the primary sediment. Accordingly, the flowing direction may be properly adjusted depending on the concentration of the organic material or a large amount of ammonia nitrogen contained in the sewage or wastewater. The effect of removing the organic material and the nitrogen may be improved.

Description

제강 슬래그를 수처리 여재로 이용한 하, 폐수 고도처리 시스템{Sewage, wastewater advanced treatment system using steel slag as water treatment filtration material}Sewage, wastewater advanced treatment system using steel slag as water treatment filtration material

본 발명은 하, 폐수 고도처리 시스템에 관한 것으로서, 더욱 상세하게는 연속적인 하, 폐수처리가 가능하도록 기존의 여과방식 시스템을 도입하면서 철강 산업의 부산물인 제강 슬래그를 기존의 하, 폐수처리시설 여재(세라믹, 암석, 플라스틱, 모래 등) 대신 여재로 이용하여 물리학적 및 생물화학적 처리가 가능한 제강 슬래그를 수처리 여재로 이용한 하, 폐수 고도처리 시스템에 관한 것이다.The present invention relates to a sewage and wastewater advanced treatment system, and more particularly, to introduce an existing filtration system to enable continuous sewage and wastewater treatment, and to remove steelmaking slag, a byproduct of the steel industry, from the existing sewage and wastewater treatment facility filter media. (Ceramics, rocks, plastics, sand, etc.) It relates to an advanced wastewater treatment system using steelmaking slag that can be treated physically and biochemically as a filter medium instead of as a filter medium.

철강 슬래그는 철강의 제조공정에서 철광석 및 고철 등으로부터 철을 분리하고 남은 암석성분을 말하며, 그 발생에 따라 고로 슬래그, 제강 슬래그 등으로 분류된다.Steel slag refers to the rock components remaining after separating iron from iron ore and scrap iron in the steel manufacturing process, and is classified into blast furnace slag and steelmaking slag according to the generation.

여기서, 제강 슬래그는 철에서 강을 만들기 위해 쇳물에 녹아 있는 탄소, 규소성분 등을 제거하는 공정에서 발생되며, 고로에서 제조된 쇳물에 고압의 산소를 불어넣어 정련하는 공정에서 생성되는 전로 슬래그와 고철 등을 전기로에서 정련할 때 생성되는 전기로 슬래그가 있다.Here, steelmaking slag is generated in the process of removing carbon and silicon components dissolved in molten iron to make steel from iron, and converter slag and scrap iron produced in the refining process by blowing high-pressure oxygen into the molten iron produced in the blast furnace. There is an electric furnace slag that is produced when the back is refined in an electric furnace.

철강 슬래그는 매년 평균 2,000여만톤이 발생하며 수량적으로 풍부하고, 가격이 기존 하수처리 여재인 세라믹 또는 플라스틱 여재 생산단가의 1/3 ~ 1/4로 매우 저렴하다.Steel slag is produced on an average of 20 million tons every year and is abundant in quantity, and the price is very low at 1/3 to 1/4 of the production unit price of ceramic or plastic filter media, which are existing sewage treatment media.

하, 폐수에 있어 고도처리하기 전의 전처리, 정화처리과정에서 슬러지 등 이물질의 처리 또는 재이용 목적의 정화처리에는 물속에 포함되어 있는 슬러지 등 이물질을 여과하는 여과장치가 사용된다.In the case of wastewater, a filtration device for filtering foreign substances such as sludge contained in water is used for pre-treatment before advanced treatment and purification treatment for the purpose of treatment or reuse of foreign substances such as sludge in the purification process.

상기 목적에 사용되는 여과장치는 여과를 수행하는 여재의 간극에 의해 물리적으로 여재의 간극보다 입자가 큰 슬러지 등 이물질을 걸러내는데, 이러한 여과를 수행하는 과정 중에 여재의 간극에 슬러지 등 이물질이 침적되어 여과효율이 떨어지는 문제가 있으며, 이를 위해서 여재의 역세척이 요구된다.The filtration device used for the above purpose physically filters out foreign substances such as sludge, which have larger particles than the gap of the filter media by the gap between the filter media performing filtration, and foreign substances such as sludge are deposited in the gap of the media There is a problem that the filtration efficiency is lowered, and for this purpose, backwashing of the filter medium is required.

대부분의 담체식 하수처리시설은 역세척 시 여재의 파손 및 유실의 문제점이 있어 현장 적용성이 떨어진다.Most carrier-type sewage treatment facilities have problems with damage and loss of filter media during backwashing, so field applicability is poor.

한편, 수처리 여과장치에 있어서, 여과효율을 증대시키기 위하여 여재 간에 층이 형성되도록 하여 물리적 또는 화학적으로 여과효율을 증대시키려고 한 경우, 여재층 간 접경에서 이물질의 침적이 가장 많이 일어나며, 역세척 과정에서 이러한 접경부분에서의 여재에 침적된 이물질을 탈리시키는 것이 용이하지 않고, 역세척 과정에 있어 여재층의 교란이 발생되어 역세척 후 여과 시에 그 효율이 저하되거나, 폐색 등의 문제가 기기고장으로 연결되는 문제점이 있었다.On the other hand, in the water treatment filtration apparatus, when an attempt is made to increase the filtration efficiency physically or chemically by forming a layer between the filter media to increase the filtration efficiency, the deposition of foreign substances occurs most at the boundary between the filter media layers, and in the backwashing process It is not easy to detach the foreign substances deposited on the filter media at the border area, and the filter media layer is disturbed in the backwashing process, so that the efficiency of filtration after backwashing is reduced, or problems such as blockage are caused by equipment failure. There was a connection problem.

따라서 하, 폐수처리에 있어 기존의 하, 폐수처리 여재인 세라믹 여재, 암석형 여재, 플라스틱형 여재 대신 초저가인 여재를 발굴하여 쉽게 현장에 적용이 가능하고, 여재의 파손 및 유실을 방지하며, 역세척을 용이하게 할 수 있는 하, 폐수처리 시스템을 개발할 필요가 있다.Therefore, in the treatment of sewage and wastewater, it is possible to easily apply to the field by excavating ultra-low-cost filter media instead of ceramic media, rock-type media, and plastic media, which are conventional media for processing wastewater and wastewater, and prevent damage and loss of media. There is a need to develop a wastewater treatment system that can facilitate cleaning.

또한, 연속적인 하, 폐수처리가 가능하도록 기존의 여과방식 시스템을 도입하면서 기존의 고가형 여재 대신 제강 슬래그 여재를 이용하여 물리학적 및 생물화학적 처리가 가능하도록 하, 폐수처리 시스템을 개발할 필요가 있다.In addition, it is necessary to develop a wastewater treatment system to enable physical and biochemical treatment using steelmaking slag filter media instead of the existing expensive filter media while introducing the existing filtration system to enable continuous sewage and wastewater treatment.

대한민국 등록특허공보 제10-0759833호(2007. 9. 18. 공고), "생물학적 하수 및 폐수 처리를 위한 활성 물질, 상기 활성 물질을 내재한 미생물 담체 및 그 제조 방법"Republic of Korea Patent Publication No. 10-0759833 (published on September 18, 2007), "Active material for biological sewage and wastewater treatment, microbial carrier containing the active material, and method for manufacturing the same" 대한민국 공개특허공보 제2010-0001316호(2010. 1. 6. 공개), "전기로 분진을 이용한 폐수처리방법"Republic of Korea Patent Publication No. 2010-0001316 (published on January 6. 2010), "Wastewater treatment method using electric furnace dust" 대한민국 등록특허공보 제10-1336875호(2013. 12. 4. 공고), "오, 폐수 및 하수의 고도처리 시스템"Republic of Korea Patent Publication No. 10-1336875 (2013. 12. 4. Announcement), "Oh, advanced treatment system of wastewater and sewage"

본 발명은 하, 폐수 고도처리에 있어 연속적인 하, 폐수처리가 가능하도록 기존의 여과방식 시스템을 도입하면서 기존의 고가형 여재 대신 초저가인 제강 슬래그를 여재로 이용하여 물리학적 및 생물화학적 처리가 가능한 하, 폐수 고도처리 시스템을 제공하는 것을 목적으로 한다.The present invention introduces the existing filtration system to enable continuous sewage and wastewater treatment in the advanced treatment of sewage and wastewater, and uses ultra-low-priced steelmaking slag as a filter material instead of the existing high-priced filter media to enable physical and biochemical treatment. , it aims to provide an advanced wastewater treatment system.

제강 슬래그를 여재로 이용하여 물리학적 및 생물화학적 처리가 가능한 하, 폐수 고도처리시스템을 제공하는 목적을 달성하기 위하여, 본 발명은 하, 폐수를 유입시켜 전처리하는 전처리시설; 상기 전처리시설을 거친 유입수를 침전시키는 1차침전조; 상기 1차침전조에서 월류되는 상징수의 일부를 유입시켜 제강 슬래그를 여재로 이용하여 상징수 중에 함유된 유기물 및 암모니아성 질소를 제거하기 위한 1차여과조; 상기 1차침전조에서 월류되는 상징수의 나머지를 유입시켜 혐기성 미생물에 의해 유기물은 메탄가스와 이산화탄소로 분해 제거하며, 인축적 박테리아는 유기물 저장과 관련하여 인을 방출하는 혐기조; 상기 1차여과조를 거친 여과수를 무산소조에 유입시키고, 상기 혐기조를 거친 처리수를 무산소조에 유입시켜 유입수 중에 있는 질산성 질소를 질소가스로 환원시키는 탈질반응을 수행하는 무산소조; 상기 무산소조를 거쳐 유입된 유입수 중에 포함된 암모니아성 질소를 질산성 질소로 산화시키는 산화반응을 수행하는 호기조; 상기 호기조를 거쳐 유입된 유입수를 침전시키는 2차침전조; 상기 2차침전조에서 월류되는 상징수를 유입시켜 제강 슬러지를 여재로 이용하여 상징수 중에 함유된 인성분, 유기물 및 부유물질을 제거하기 위한 2차여과조를 포함하는 제강슬래그를 수처리 여재로 이용한 하, 폐수 고도처리 시스템을 제공한다.In order to achieve the object of providing an advanced wastewater treatment system under which physical and biochemical treatment is possible by using steelmaking slag as a filter medium, the present invention provides a pretreatment facility for pretreatment by introducing sewage and wastewater; a primary precipitation tank for precipitating the influent through the pretreatment facility; a primary filtration tank for removing organic matter and ammonia nitrogen contained in the symbol water by introducing a portion of the symbol water overflowing from the primary sedimentation tank and using the steelmaking slag as a filter medium; anaerobic tank in which organic matter is decomposed and removed into methane gas and carbon dioxide by anaerobic microorganisms by introducing the remainder of the symbol water overflowing from the first precipitation tank, and phosphorus-accumulating bacteria release phosphorus in relation to storage of organic matter; an anaerobic tank that introduces the filtered water that has passed through the primary filtration tank into the anoxic tank, and introduces the treated water that has passed through the anaerobic tank into the anoxic tank to perform a denitrification reaction for reducing nitrate nitrogen in the influent to nitrogen gas; an aerobic tank for performing an oxidation reaction of oxidizing ammonia nitrogen contained in the influent water introduced through the anaerobic tank to nitrate nitrogen; a secondary sedimentation tank for precipitating the influent water introduced through the aerobic tank; The steelmaking slag including a secondary filtration tank for removing phosphorus, organic matter and suspended matter contained in the symbol water by introducing the symbol water overflowing from the secondary sedimentation tank and using the steelmaking sludge as a filter medium is used as a water treatment filter medium; A wastewater advanced treatment system is provided.

본 발명의 하, 폐수 고도처리 시스템은 또한, 1차여과조와 2차여과조에서 발생하는 역세수는 1차침전조로 반송하여 재처리하고, 호기조에서 배출되는 처리수 중 반송수를 무산소조로 반송하며, 1차침전조와 2차침전조에서 발생하는 슬러지는 탈수기에서 탈수처리하고, 탈수여액은 혐기조로 반송하여 재처리하는 것을 특징으로 한다.According to the present invention, the advanced wastewater treatment system also returns the backwash water generated in the primary and secondary filtration tanks to the primary settling tank for reprocessing, and returns the returned water from the treated water discharged from the aerobic tank to the anaerobic tank, The sludge generated in the primary and secondary sedimentation tanks is dewatered in a dehydrator, and the dewatered filtrate is returned to the anaerobic tank for reprocessing.

본 발명의 하, 폐수 고도처리 시스템은 또한, 1차여과조는 상부에 유입수 유입라인과 역세척수 유출라인이 형성되며 하부에 여과수 배출라인과 역세척수 유입라인이 연결되고, 상부수층, 제강 슬래그 여재층, 하부수층이 구비되며, 제강 슬래그 여재층과 하부수층 사이에 에어레이션을 위한 폭기장치를 포함하여 구성된 것을 특징으로 한다.In the lower, advanced wastewater treatment system of the present invention, the primary filtration tank has an inflow water inlet line and a backwash water outflow line formed at the upper part, and the filtered water outlet line and backwash water inlet line are connected at the lower part, and the upper water layer, the steelmaking slag filter media layer , the lower water layer is provided, and it is characterized in that it comprises an aeration device for aeration between the steelmaking slag filter media layer and the lower water layer.

본 발명의 하, 폐수 고도처리 시스템은 또한, 2차여과조는 상부에 유입수 유입라인과 역세척수 유출라인이 형성되며 하부에 여과수 배출라인과 역세척수 유입라인이 연결되고, 상기 2차여과조의 하부에 형성되는 하부여재층, 상기 하부여재층 상부에 구성되며, 상기 하부여재층을 형성하는 여재보다 입경이 큰 여재로 구성되는 상부여재층, 상기 하부여재층과 상기 상부여재층의 접경에 에어레이션을 위한 폭기장치를 포함하여 구성된 것을 특징으로 한다.In addition, in the advanced wastewater treatment system of the present invention, in the secondary filtration tank, an inflow water inlet line and a backwash water outflow line are formed at the upper portion, and the filtered water outlet line and the backwash water inlet line are connected at the bottom, and at the lower portion of the secondary filtration tank The lower filter media layer is formed, the upper media layer is configured on the upper part of the lower media layer, and the upper media layer is made of a filter media having a particle diameter larger than that of the media forming the lower media layer. It is characterized in that it is configured to include an aeration device.

본 발명의 하, 폐수 고도처리 시스템은 또한, 2차침전조와 2차여과조 사이에 교반기가 있는 응집조가 추가로 구성되고, 상기 응집조와 2차여과조는 유입수 유입라인에 의해 연결되는 것을 특징으로 한다.According to the present invention, the advanced wastewater treatment system further comprises a coagulation tank with a stirrer between the secondary sedimentation tank and the secondary filtration tank, and the coagulation tank and the secondary filtration tank are connected by an influent inlet line.

이에 따라, 본 발명에 따른 하, 폐수 고도처리 시스템은 값싼 여재인 제강 슬래그를 여재로 하는 하, 폐수 고도처리 시스템을 개발하여 경제적인 신규분야 사업화를 할 수 있는 효과가 있도록 하였다.Accordingly, the advanced wastewater treatment system according to the present invention developed an advanced wastewater treatment system using steelmaking slag, which is a cheap filter medium, as a filter material, thereby enabling economic commercialization in new fields.

본 발명은 값싼 여재인 제강 슬래그를 여재로 하는 하, 폐수 고도처리 시스템을 개발하여 경제적인 신규분야 사업화를 할 수 있는 효과가 있다.The present invention has the effect of economically commercializing a new field by developing an advanced wastewater treatment system using steelmaking slag, which is a cheap filter medium, as a filter medium.

본 발명은 또한, 1차침전조에서 월류되는 상징수의 일부를 1차여과조를 거쳐 유기물 제거와 질산화 반응을 미리 수행하도록 구성함으로써 하, 폐수 중에 유기물 농도나 다량으로 존재하는 암모니아성 질소의 농도에 따라 흐름 방향을 적절히 조절할 수 있을 뿐만 아니라, 유기물과 질소의 제거 효과도 향상될 수 있는 효과가 있다.According to the present invention, by configuring a part of the symbol water overflowing from the primary precipitation tank to perform organic matter removal and nitrification in advance through the primary filtration tank, the concentration of organic matter in the wastewater or the concentration of ammonia nitrogen present in a large amount As well as being able to properly control the flow direction, there is an effect that the removal effect of organic matter and nitrogen can be improved.

본 발명은 또한, 여과조에 제강 슬래그를 여재로 활용하여 제강 슬래그에 다량 함유되어 있는 CaO가 탈인효과가 있고, NO3-N이 제강 슬래그 여재 입자 사이의 고농도 미생물에 의해 탈질되어 농도가 감소하는 특성을 잘 활용함으로써 제강 슬래그를 기존의 고가형 여재 대신 N, P을 제거하는데 훌륭한 대체 여재로서 활용할 수 있는 효과가 있다.The present invention also utilizes steelmaking slag as a filter medium in the filtration tank, so that CaO contained in a large amount in steelmaking slag has a dephosphorization effect, and NO 3 -N is denitrified by high-concentration microorganisms between steelmaking slag filter media particles and the concentration is reduced. It has the effect of being able to use steelmaking slag as an excellent substitute for removing N and P instead of the existing expensive filter media.

본 발명은 또한, 여과조에 공기가 공급되는 폭기여과를 실행하여 여재에 부착 성장하는 호기성 미생물에 의하여 유기물(BOD, SS)을 제거하고, 질산화균에 의하여 암모니아성 질소를 질산성 질소로 질산화시키며, 추가적으로 역세척 과정에서 여재층의 상부에 이물질의 침적이 많이 일어난 상태에서 여재에 침적된 이물질을 탈리시키는 것이 용이하도록 함과 동시에 부상하면서 탈리된 이물질 중 비교적 비중이 작은 이물질을 부유시켜 제거할 수 있는 효과가 있다.The present invention also performs aeration filtration in which air is supplied to the filtration tank to remove organic matter (BOD, SS) by aerobic microorganisms that grow attached to the filter media, and nitrify ammonia nitrogen to nitrate nitrogen by nitrifying bacteria, In addition, in the backwashing process, it is easy to detach the foreign substances deposited on the filter media in a state where a lot of foreign substances are deposited on the upper part of the filter media layer, and at the same time, it is possible to remove the foreign substances with a relatively small specific gravity among the foreign substances detached while floating. It works.

본 발명은 또한, 수처리 공법의 특성상 설치 후 이를 전문적으로 유지관리할 인원이 투입되어야 하므로 지속적인 유지관리 수익이 발생할 수 있는 효과가 있다.The present invention also has the effect that continuous maintenance profit can be generated because personnel to professionally maintain it after installation due to the nature of the water treatment method.

도 1은 본 발명의 일실시예에 따른 제강 슬래그를 수처리 여재로 이용한 하, 폐수 고도처리 시스템의 모식도이다.
도 2는 본 발명의 다른 일실시예에 따른 응집조가 추가된 제강 슬래그를 수처리 여재로 이용한 하, 폐수 고도처리 시스템의 모식도이다.
도 3은 본 발명에 따른 1차여과조의 일실시예를 나타낸 도면이다.
도 4는 본 발명에 따른 2차여과조의 일실시예를 나타낸 도면이다.1 is a schematic diagram of an advanced wastewater treatment system using steelmaking slag as a water treatment filter material according to an embodiment of the present invention.
2 is a schematic diagram of a lower and advanced wastewater treatment system using steelmaking slag to which a coagulation tank is added as a water treatment medium according to another embodiment of the present invention.
3 is a view showing an embodiment of the primary filtration tank according to the present invention.
4 is a view showing an embodiment of the secondary filtration tank according to the present invention.

본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정해서 해석되어서는 아니 되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다.The terms or words used in the present specification and claims should not be construed as being limited to their ordinary or dictionary meanings, and the inventor may properly define the concept of the term in order to best describe his invention. It should be interpreted as meaning and concept consistent with the technical idea of the present invention based on the principle that there is.

본 발명에 따른 물리학적 및 생물화학적 하, 폐수 고도처리 시스템은 다음과 같다.The physical and biochemical, advanced wastewater treatment system according to the present invention is as follows.

우선 하, 폐수를 스크린이나 침사지를 거쳐 1차로 조대한 입자들을 전처리로 제거한 다음, 1차침전조에 저장하고 생물학적 처리조에서 유기물 등을 분해하여 각종 용도로 방류하는 기술이 사용된다. 여기서 생물학적 처리조는 혐기조, 무산소조, 호기조를 포함하는데, 상기 혐기조 내로 유입된 하, 폐수는 혐기성 미생물에 의해 유기물은 메탄가스와 이산화탄소로 분해되어 제거되며, 인축적 박테리아는 유기물 저장과 관련하여 인을 방출한다.First, a technique is used in which wastewater is first removed by pretreatment to remove coarse particles through a screen or sedimentation paper, then stored in a primary sedimentation tank, decomposed organic matter in a biological treatment tank, and discharged for various purposes. Here, the biological treatment tank includes an anaerobic tank, an anaerobic tank, and an aerobic tank, and the wastewater introduced into the anaerobic tank is decomposed into methane gas and carbon dioxide by anaerobic microorganisms to remove the organic matter, and the phosphorus-accumulating bacteria releases phosphorus in connection with the storage of organic matter do.

연속하여, 상기 혐기조를 거친 하, 폐수는 다음 단계인 무산소조로 공급되며, 상기 무산소조에서는 탈질 미생물에 의해 질산성 질소를 질소가스로 환원시키는 탈질반응을 수행한다.Subsequently, after passing through the anaerobic tank, the wastewater is supplied to the anoxic tank, which is the next step, and in the anoxic tank, a denitrification reaction of reducing nitrate nitrogen to nitrogen gas is performed by denitrifying microorganisms.

그리고 상기 무산소조를 거친 하, 폐수는 호기조로 유입되는 데 이에 포함된 유기물은 상기 호기조 내의 미생물에 의해 이산화탄소와 물로 분해되고, 암모니아성 질소는 질산화 미생물에 의해 아질산이나 질산으로 질산화된다.And under the anaerobic tank, the wastewater flows into the aerobic tank, and the organic matter contained therein is decomposed into carbon dioxide and water by the microorganisms in the aerobic tank, and ammonia nitrogen is nitrified to nitrous acid or nitric acid by the nitrifying microorganisms.

또한, 인축적 박테리아는 축적된 유기물의 산화분해가 진행되면서 인을 과잉 섭취하여 슬러지 형태로 배출되면서 인이 제거된다. 이때, 상기 호기조 내에는 브로워(blower)에 의해 공기가 계속적으로 주입되는 산기관을 저부에 배치하고, 주입되는 공기는 상기 호기조 내의 산소농도를 유지한다.In addition, the phosphorus-accumulating bacteria ingest phosphorus excessively as the oxidative decomposition of the accumulated organic matter proceeds, and the phosphorus is removed as it is discharged in the form of sludge. At this time, in the aerobic tank, an air diffuser through which air is continuously injected by a blower is disposed at the bottom, and the injected air maintains the oxygen concentration in the aerobic tank.

그리고 상기 호기조 내에서 처리된 하, 폐수는 배출관을 통하여 별도의 2차침전조 내로 유입되어 슬러지가 침전된 처리수만을 재이용하도록 후속 처리하여 외부로 배출하고, 상기 1차, 2차침전조 내에 침전된 슬러지는 탈수기에서 탈수되고, 탈수여액은 1차침전조로 반송되며, 상기 호기조 내의 처리수는 내부 순환펌프에 의하여 무산소조로 반송된다.And, the wastewater treated in the aerobic tank is introduced into a separate secondary sedimentation tank through a discharge pipe, and is subsequently treated to reuse only the treated water in which the sludge is deposited, and discharged to the outside, and the sludge deposited in the primary and secondary sedimentation tanks is dehydrated in the dehydrator, the dehydrated filtrate is returned to the primary sedimentation tank, and the treated water in the aerobic tank is returned to the anaerobic tank by the internal circulation pump.

이하, 본 발명에 대하여 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 상세히 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings for the present invention.

다음의 실시예는 단지 본 발명을 설명하기 위하여 예시된 것에 불과하고, 본 발명의 범위를 제한하기 위한 것은 아니다. 본 발명의 실시예들은 당 분야에서 통상의 지식을 가진 사람에게 본 발명을 보다 완전하게 설명하기 위해 제공되는 것이다.The following examples are merely illustrative of the present invention, and are not intended to limit the scope of the present invention. The embodiments of the present invention are provided to more completely explain the present invention to those of ordinary skill in the art.

도 1은 본 발명의 일실시예에 따른 제강 슬래그를 수처리 여재로 이용한 하, 폐수 고도처리 시스템의 모식도이고, 도 2는 본 발명의 다른 일실시예에 따른 응집조가 추가된 제강 슬래그를 수처리 여재로 이용한 하, 폐수 고도처리 시스템의 모식도이다.1 is a schematic view of an advanced wastewater treatment system using steelmaking slag according to an embodiment of the present invention as a water treatment filter medium, and FIG. It is a schematic diagram of the advanced wastewater treatment system used.

도 1의 하, 폐수 고도처리 시스템에 비하여 도 2의 하, 폐수 고도처리 시스템은 응집조가 더 있는 점에서 차이가 있다.The lower and advanced wastewater treatment system of FIG. 2 is different from the lower and advanced wastewater treatment system of FIG. 1 in that there is more coagulation tank.

도 1 내지 2에서 참조한 바와 같이, 본 발명의 제강 슬래그를 수처리 여재로 이용한 하, 폐수 고도처리 시스템은 하, 폐수를 유입시켜 전처리하는 전처리시설(100); 상기 전처리시설(100)을 거친 유입수를 침전시키는 1차침전조(200); 상기 1차침전조(200)에서 월류되는 상징수의 일부를 유입시켜 제강 슬래그를 여재로 이용하여 상징수 중에 함유된 유기물 및 암모니아성 질소를 제거하기 위한 1차여과조(300); 상기 1차침전조(200)에서 월류되는 상징수의 나머지를 유입시켜 혐기성 미생물에 의해 유기물은 메탄가스와 이산화탄소로 분해 제거하며, 인축적 박테리아는 유기물 저장과 관련하여 인을 방출하는 혐기조(400); 상기 1차여과조(300)를 거친 여과수를 무산소조(500)에 유입시키고, 상기 혐기조(400)를 거친 처리수를 무산소조(500)에 유입시켜 유입수 중에 있는 질산성 질소를 질소가스로 환원시키는 탈질반응을 수행하는 무산소조(500); 상기 무산소조(500)를 거쳐 유입된 유입수 중에 포함된 암모니아성 질소를 질산성 질소로 산화시키는 산화반응을 수행하는 호기조(600); 상기 호기조(600)를 거쳐 유입된 유입수를 침전시키는 2차침전조(800); 상기 2차침전조(800)에서 월류되는 상징수를 유입시켜 제강 슬러지를 여재로 이용하여 상징수 중에 함유된 인성분, 유기물 및 부유물질을 제거하기 위한 2차여과조(900)를 포함하여 구성된다.As shown in FIGS. 1 and 2 , the advanced wastewater treatment system using the steelmaking slag of the present invention as a water treatment medium includes a pretreatment facility 100 for pre-treating the sewage and wastewater; a first settling tank 200 for precipitating the influent that has passed through the pretreatment facility 100; a primary filtration tank 300 for introducing a portion of the symbol water overflowing from the primary precipitation tank 200 and using the steelmaking slag as a filter medium to remove organic matter and ammonia nitrogen contained in the symbol water; An anaerobic tank 400 for decomposing and removing organic matter into methane gas and carbon dioxide by anaerobic microorganisms by introducing the remainder of the symbol water overflowing from the primary precipitation tank 200, and phosphorus-accumulating bacteria for releasing phosphorus in connection with the storage of organic matter; A denitrification reaction of reducing nitrate nitrogen in the influent to nitrogen gas by introducing the filtered water that has passed through the primary filtration tank 300 into the anaerobic tank 500 and the treated water that has passed through the anaerobic tank 400 into the anaerobic tank 500 . anaerobic tank 500 to perform; an aerobic tank 600 for performing an oxidation reaction of oxidizing ammonia nitrogen contained in the influent water introduced through the anaerobic tank 500 to nitrate nitrogen; a secondary sedimentation tank 800 for precipitating the influent water introduced through the aerobic tank 600; It is configured to include a secondary filtration tank 900 for introducing the symbol water overflowing from the secondary sedimentation tank 800 and using the steelmaking sludge as a filter medium to remove phosphorus components, organic matter, and suspended matter contained in the symbol water.

상기 전처리시설(100)은 하, 폐수가 유입되어 정수처리가 효과적으로 이루어지도록 예비적으로 준비하는 시설이다.The pre-treatment facility 100 is a facility that prepares in advance so that wastewater is introduced to effectively perform water purification treatment.

본 발명에서 전처리시설(100)로는 통상적으로 다수의 스크린이 형성되어 하, 폐수 중에 포함되어 있는 협잡물을 걸러서 분리시키거나 침사지에서 모래 등 무거운 물질을 가라앉게 할 수 있다. 이러한 전처리시설(100)을 통과한 하, 폐수는 1차침전조(200)에 저장된다.In the present invention, the pretreatment facility 100 is typically formed with a plurality of screens to filter and separate contaminants contained in the wastewater or to sink heavy materials such as sand in the sedimentation pond. After passing through the pretreatment facility 100 , the wastewater is stored in the primary sedimentation tank 200 .

상기 1차침전조(200)는 전처리시설(100)에서 유입된 하, 폐수와 1차여과조(300) 및 2차여과조(900)에서 유입된 역세척수가 유입되어 균질화가 이루어지면서 일정시간 체류하면서 무거운 물질이 침전되게 할 수 있으며, 이후 생물학적 처리조로 유입되는 유량과 흐름 방향을 밸브 등으로 적절히 조정할 수 있다.The primary precipitation tank 200 is a heavy wastewater from the pretreatment facility 100 and backwashing water from the primary filtration tank 300 and the secondary filtration tank 900, and homogenization while staying for a certain period of time. The material may be allowed to settle, and then the flow rate and flow direction introduced into the biological treatment tank may be appropriately adjusted with a valve or the like.

즉, 전처리시설(100) 이후 하, 폐수는 1차침전조(200)를 거쳐서 침전된 후 1차침전조(200)에서 월류되는 상징수의 일부를 1차여과조(300)에 유입시켜 제강 슬래그를 여재로 이용하여 오염물질을 제거한다.That is, after the pretreatment facility 100, the wastewater is precipitated through the primary sedimentation tank 200, and then a part of the symbol water overflowing from the primary sedimentation tank 200 is introduced into the primary filtration tank 300 to filter the steelmaking slag. to remove contaminants.

바람직하게는, 상기 1차침전조(200)에서 월류되는 상징수 중 15 ~ 25%를 1차여과조(300)에 유입시킬 수 있다.Preferably, 15 to 25% of the symbol water overflowing from the primary precipitation tank 200 may be introduced into the primary filtration tank 300 .

도 3은 본 발명에 따른 1차여과조의 일실시예를 나타낸 도면이다.3 is a view showing an embodiment of the primary filtration tank according to the present invention.

1차여과조(300)는 상부에 유입수 유입라인과 역세척수 유출라인이 형성되며, 하부에 여과수 유출라인과 역세척수 유입라인이 연결되고, 상부수층(310), 제강 슬래그 여재층(320), 하부수층(330)이 구비되며, 제강 슬래그 여재층(320)과 하부수층(330) 사이에 에어레이션을 위한 산기관 등 폭기장치가 공기펌프와 연결 설치되어 공기가 공급되는 폭기여과를 행함으로써 여재에 부착 성장하는 호기성 미생물에 의하여 유기물(BOD, SS)을 제거하고, 질산화균에 의하여 암모니아성 질소를 질산성 질소로 질산화시킨다.The primary filtration tank 300 has an inflow water inlet line and a backwash water outflow line formed at the upper part, and the filtered water outlet line and backwash water inlet line are connected at the lower part, and the upper water layer 310, the steelmaking slag filter media layer 320, the lower part A water layer 330 is provided, and an aeration device such as an aeration pipe for aeration is installed between the steelmaking slag filter medium layer 320 and the lower water layer 330 in connection with the air pump, and is attached to the filter medium by performing aeration filtration to supply air. Organic matter (BOD, SS) is removed by growing aerobic microorganisms, and ammonia nitrogen is nitrified to nitrate nitrogen by nitrifying bacteria.

본 발명은 1차침전조(200)에서 월류되는 상징수의 일부를 상기 1차여과조(300)를 거쳐 유기물 제거와 질산화 반응을 미리 하도록 함으로써 하, 폐수 중에 유기물 농도나 다량으로 존재하는 암모니아성 질소의 농도에 따라 흐름 방향을 적절히 조절할 수 있을 뿐만 아니라, 유기물과 질소의 제거 효과가 향상될 수 있다.In the present invention, a part of the symbol water overflowing from the primary precipitation tank 200 passes through the primary filtration tank 300 to remove organic matter and nitrification reaction in advance. The flow direction can be appropriately adjusted according to the concentration, and the removal effect of organic matter and nitrogen can be improved.

상기 1차여과조(300)를 거친 여과수는 무산소조(500)에 유입시켜 유입수 중에 있는 질산성 질소를 탈질산화 박테리아에 의해 질소가스로 환원시키는 탈질반응을 수행하게 한다.The filtered water passing through the primary filtration tank 300 is introduced into the anoxic tank 500 to perform a denitrification reaction of reducing nitrate nitrogen in the influent water to nitrogen gas by denitrifying bacteria.

여기서, 1차여과조(300)를 거친 여과수를 혐기조(400) 대신에 무산소조(500)에 유입시키는 이유는 여과수에 포함된 질산염이 무산소조(500)가 아닌 혐기조(400)에 많이 유입되면 탈질산화 박테리아가 우선적으로 유기물인 탄소원을 소비하게 되어 인축적 박테리아에 의한 인방출이 감소하여 인감소 효율이 저하되기 때문에 이를 조절하기 위한 것이다.Here, the reason for introducing the filtered water that has passed through the primary filtration tank 300 into the anaerobic tank 500 instead of the anaerobic tank 400 is that the nitrate contained in the filtered water flows into the anaerobic tank 400 instead of the anaerobic tank 500. This is to control this because phosphorus emission by phosphorus-accumulating bacteria is reduced because the carbon source, which is an organic material, is consumed preferentially, and phosphorus reduction efficiency is lowered.

한편, 1차침전조(200)에서 월류되는 상징수의 나머지를 혐기조(400)에 유입시켜 유입수를 혐기성 미생물에 의해 유기물은 메탄가스와 이산화탄소로 분해되어 제거하며, 인축적 박테리아는 유기물 저장과 관련하여 인을 방출하도록 한다.On the other hand, by introducing the remainder of the symbol water overflowing from the primary precipitation tank 200 into the anaerobic tank 400, the influent organic matter is decomposed into methane gas and carbon dioxide by anaerobic microorganisms and removed, and the phosphorus-accumulating bacteria is related to the storage of organic matter. to release phosphorus.

여기서, 상기 1차침전조(200)에서 월류되는 상징수 중 15 ~ 25%를 1차여과조(300)에 유입시키는 경우에는, 1차침전조(200)에서 월류되는 상징수의 나머지를 혐기조(400)에 유입시킨다는 의미는 상징수 중 75 ~ 85%를 유입시키는 것을 나타낼 수 있다.Here, when 15 to 25% of the symbol water overflowing from the first settling tank 200 is introduced into the first filtration tank 300, the remainder of the symbol water overflowing from the first settling tank 200 is transferred to the anaerobic tank 400 The meaning of inflow to can refer to inflow of 75 to 85% of the number of symbols.

혐기조(400)를 거친 처리수는 무산소조(500)에 유입시켜 유입수 중에 있는 질산성 질소를 탈질산화 박테리아에 의해 질소가스로 환원시키는 탈질반응을 수행하게 한다.The treated water that has passed through the anaerobic tank 400 is introduced into the anaerobic tank 500 to perform a denitrification reaction of reducing nitrate nitrogen in the influent water to nitrogen gas by denitrifying bacteria.

또한, 상기 무산소조(500)를 거친 처리수를 호기조(600)에 유입시키면 유입수 중에 포함된 유기물(BOD, SS)은 호기조(600) 내의 호기성 미생물에 의해 이산화탄소와 물로 분해되고, 암모니아성 질소는 질산화 미생물에 의해 아질산이나 질산성 질소로 산화시키는 산화반응을 수행하며, 상기 혐기조(400) 및 무산소조(500)에 의한 혐기 반응에 의해 방출된 인에 대하여 인제거 미생물에 의한 인흡수가 발생하게 된다.In addition, when the treated water that has passed through the anaerobic tank 500 is introduced into the aerobic tank 600 , organic matter (BOD, SS) contained in the influent water is decomposed into carbon dioxide and water by the aerobic microorganisms in the aerobic tank 600, and ammonia nitrogen is nitrified An oxidation reaction of oxidation to nitrous acid or nitrate nitrogen is performed by microorganisms, and phosphorus absorption by the phosphorus removal microorganism occurs with respect to the phosphorus released by the anaerobic reaction by the anaerobic tank 400 and the anaerobic tank 500 .

여기서, 호기조(600)를 거친 처리수의 일부가 슬러지와 함께 무산소조(500)로 반송되어 반송수 중에 있는 아질산이나 질산성 질소를 탈질산화 박테리아에 의해 질소가스로 환원시키는 탈질반응을 수행하게 한다.Here, a portion of the treated water that has passed through the aerobic tank 600 is returned to the anoxic tank 500 together with the sludge to perform a denitrification reaction of reducing nitrous acid or nitrate nitrogen in the returned water to nitrogen gas by denitrifying bacteria.

따라서 무산소조(500)는 1차여과조(300)를 거친 여과수, 혐기조(400)를 거친 처리수 및 호기조(600)를 거친 처리수의 일부가 내부 반송된 반송수를 모아 탈질반응을 수행하게 된다.Therefore, the anoxic tank 500 collects the returned water from which the filtered water passed through the primary filtration tank 300, the treated water passed through the anaerobic tank 400, and the treated water passed the aerobic tank 600 are internally returned to perform a denitrification reaction.

한편, 호기조(600)를 거친 처리수 중 반송수를 제외한 나머지를 2차침전조(800)에 유입시켜 일정시간 체류하면서 유입수 중에 슬러지가 침강되어 인발함으로써 인이 제거될 수 있다.On the other hand, phosphorus can be removed by allowing the remainder of the treated water that has passed through the aerobic tank 600 to flow into the secondary settling tank 800 , except for the return water, and the sludge settles in the influent water and draws it out while staying for a certain period of time.

본 발명은 1차침전조(200)와 2차침전조(800)에서 발생하는 침전 슬러지는 탈수기(700)에서 탈수하여 탈수여액은 혐기조(400)로 반송하여 재처리하고, 탈수케이크는 별도로 저장하여 외부 위탁 처리할 수 있다.In the present invention, the settling sludge generated in the first settling tank 200 and the second settling tank 800 is dehydrated in the dehydrator 700, and the dehydrated filtrate is returned to the anaerobic tank 400 for reprocessing, and the dehydration cake is stored separately and externally It can be consigned.

2차침전조(800)에서 월류된 상징수는 제강 슬래그를 여재로 이용하여 유기물(BOD), 부유물질(SS), 인 등 오염물질을 제거하기 위하여 2차여과조(900)에 유입시킨다.The symbol water overflowed from the secondary precipitation tank 800 is introduced into the secondary filtration tank 900 to remove contaminants such as organic matter (BOD), suspended matter (SS), phosphorus, and the like by using steelmaking slag as a filter medium.

도 4는 본 발명에 따른 2차여과조의 일실시예를 나타낸 도면이다.4 is a view showing an embodiment of the secondary filtration tank according to the present invention.

2차여과조(900)는 상부에 유입수 유입라인과 역세척수 유출라인이 형성되며 하부에 여과수 배출라인과 역세척수 유입라인이 연결되고, 상기 2차여과조(900)의 하부에 형성되는 하부여재층(920)과, 상기 하부여재층(920) 상부에 구성되고 상기 하부여재층(920)을 형성하는 여재보다 입경이 큰 여재로 구성되는 상부여재층(910), 상기 하부여재층(920)과 상기 상부여재층(910)의 접경에 에어레이션을 위한 산기관 등 폭기장치가 공기펌프와 연결 설치되어 공기가 공급되는 폭기여과를 행함으로써 여재에 부착 성장하는 호기성 미생물에 의하여 유기물(BOD), 부유물질(SS)을 제거하고, 호기조(600)에서 인제거 미생물에 흡수된 인을 제거할 수 있다.The secondary filtration tank 900 has an inflow water inlet line and a backwash water outflow line formed at the upper part, and a filtered water outlet line and a backwash water inlet line are connected at the bottom, and a lower filter media layer formed at the lower part of the secondary filtration tank 900 ( 920), the upper filter media layer 910, the lower filter media layer 920 and the At the border of the upper filter medium layer 910, an aeration device such as an aeration pipe for aeration is installed in connection with an air pump to perform aeration filtration in which air is supplied, and organic matter (BOD), suspended matter ( SS), and the phosphorus absorbed by the phosphorus removal microorganisms in the aerobic tank 600 may be removed.

여기서, 2차여과조(900)의 상부여재층(910)과 하부여재층(920)의 여재는 모두 제강 슬래그(비중 : 3.5)일 수 있으며 크기에 따라 두 개층으로 설치할 수 있다.Here, both the filter media of the upper filter media layer 910 and the lower media layer 920 of the secondary filtration tank 900 may be steelmaking slag (specific gravity: 3.5), and may be installed in two layers depending on the size.

또한, 유입라인에 의해 유입되는 유입수 중 다소 입경이 큰 이물질이 상부여재층(910)에 의해 1차적으로 여과가 되도록 하며, 상기 상부여재층(910)보다 입경이 작은 하부여재층(920)에 의해 여재층(910, 920)이 폐색됨이 없이 효율적으로 여과가 되도록 하기 위해 하부여재층(920)의 여재가 상부여재층(910)의 여재보다 작게 구성하여야 한다.In addition, foreign substances having a rather large particle diameter among the influent water introduced through the inflow line are primarily filtered by the upper filter media layer 910, and the lower filter media layer 920 with a smaller particle diameter than the upper filter media layer 910 is In order to efficiently filter the filter media layers 910 and 920 without clogging by the filtration, the filter media of the lower media layer 920 should be smaller than that of the upper media layer 910 .

제강 슬래그의 입경이 2mm미만으로 되도록 분쇄하기 위해서는 많은 시간과 노력이 필요하지만, 상기 상부여재층(910)의 여재는 입경이 0.8 ~ 2mm정도로 구성되도록 하며, 상기 하부여재층(920)의 여재는 0.45 ~ 0.8mm정도로 구성되도록 하는 것이 바람직하다.It takes a lot of time and effort to pulverize the steelmaking slag so that the particle diameter is less than 2 mm, but the filter media of the upper filter media layer 910 has a particle diameter of about 0.8 to 2 mm, and the filter media of the lower media layer 920 is It is preferable to configure it to be about 0.45 ~ 0.8mm.

1차여과조(300)와 2차여과조(900)에서 여재로 사용될 수 있는 제강 슬래그는 제철 공장에서 부산물로 발생하는 것으로서, 고로 슬래그에 비하여 상대적으로 많은 Ca 및 Mg 함량을 갖는다. 구체적으로는 원료 성상에 따라서 차이가 있을 수 있지만, 약 0.05 내지 1중량%의 FeO, 약 22 내지 35중량%의 Fe2O3, 약 7 내지 10중량%의 SiO2, 약 36 내지 43중량%의 CaO, 약 0.05 내지 1중량%의 Al2O3, 약 6 내지 9중량%의 MgO, 약 1 내지 2중량%의 P2O5, 약 0.001 내지 0.06중량%의 S를 포함할 수 있다.Steelmaking slag, which can be used as a filter medium in the primary filtration tank 300 and the secondary filtration tank 900, is generated as a by-product in a steel mill, and has relatively higher Ca and Mg contents than blast furnace slag. Specifically, although there may be differences depending on the properties of the raw material, about 0.05 to 1% by weight of FeO, about 22 to 35% by weight of Fe 2 O 3 , about 7 to 10% by weight of SiO 2 , about 36 to 43% by weight of CaO, about 0.05 to 1 wt% Al 2 O 3 , about 6 to 9 wt% MgO, about 1 to 2 wt% P 2 O 5 , and about 0.001 to 0.06 wt% S.

제강 슬래그의 비중은 3.5 정도로 모래의 비중인 2.6 보다 높지만, 비중 차에 의해 분리된 것이므로 본질적으로 철보다 가벼운 것이고, 유해 중금속을 거의 함유하지 않고 있어 환경유해성이 낮다.The specific gravity of steelmaking slag is about 3.5, which is higher than that of sand, which is 2.6, but since it is separated by a specific gravity difference, it is essentially lighter than iron and contains almost no harmful heavy metals, so it is low in environmental hazard.

제강 슬래그의 칼슘이 물과 반응하여 OH-기를 형성하여 오, 폐수의 pH가 상승한다. 또한, 제강 슬래그에 함유되어 있는 CaO와 (PO4)3-가 반응하여 Ca3(PO4)2가 형성되어 침전하므로 탈인효과가 있고, NO3-N이 제강 슬래그 여재 입자 사이의 고농도 미생물에 의해 탈질되어 농도가 감소하므로, 제강 슬래그가 기존 고가형 여재 대신 N, P을 제거하는데 훌륭한 대체 여재로서 활용될 수 있다.Calcium in the steelmaking slag reacts with water to form OH- groups, and the pH of the wastewater rises. In addition, since CaO contained in the steelmaking slag reacts with (PO 4 ) 3- to form and precipitate Ca 3 (PO 4 ) 2 , there is a dephosphorization effect, and NO 3 -N is effective against high-concentration microorganisms between the steelmaking slag filter media particles. Since the concentration is reduced by denitrification, steelmaking slag can be used as an excellent substitute for removing N and P instead of the existing expensive filter media.

1차여과조(300)에서 제강 슬래그 여재층(320)과 하부수층(330) 사이에 에어레이션을 위한 산기관 등 폭기장치(340)가 에어 펌프에 연결 설치되는 이유는 공기가 공급되는 폭기여과를 실행하여 여재에 부착 성장하는 호기성 미생물에 의하여 유기물(BOD, SS)을 제거하고, 질산화균에 의하여 암모니아성 질소를 질산성 질소로 질산화시키며, 추가적으로 역세척 과정에서 제강 슬래그 여재층(320)의 상부에 이물질의 침적이 많이 일어난 상태에서 여재에 침적된 이물질을 탈리시키는 것이 용이하도록 함과 동시에 부상하면서 탈리된 이물질 중 비교적 비중이 작은 이물질을 부유시켜 제거하도록 하는 것이다. 즉 부상에 의한 고액분리가 수행될 수 있도록 하는 것이다.The reason why the aeration device 340 such as an aeration pipe for aeration between the steelmaking slag filter medium layer 320 and the lower water layer 330 in the primary filtration tank 300 is connected to the air pump is to perform aeration filtration to which air is supplied to remove organic matter (BOD, SS) by aerobic microorganisms adhering to and growing on the filter media, nitrifying ammonia nitrogen into nitrate nitrogen by nitrifying bacteria, and additionally, in the backwashing process, on the upper portion of the steelmaking slag filter media layer 320 It is to make it easy to detach the foreign substances deposited on the filter media in a state in which a lot of foreign substances are deposited, and at the same time to float and remove the foreign substances having a relatively small specific gravity among the foreign substances detached while floating. That is, the solid-liquid separation by injury is to be performed.

또한, 본 발명에서 2차여과조(900)에서 하부여재층(920)과 상부여재층(910)의 접경에 에어레이션을 위한 산기관 등 폭기장치(940)를 포함하여 구성하는 이유도 1차 여과와 같이 폭기여과를 행하여 여재에 부착 성장하는 호기성 미생물에 의하여 유기물(BOD, SS)을 제거하고, 호기조(600)에서 인제거 미생물에 흡수된 인을 제거할 뿐만 아니라, 추가적으로 역세척 과정에서 하부여재층(920)과 상부여재층(910)의 접경부분에 이물질의 침적이 가장 많이 일어나, 접경부분에서 여재에 침적된 이물질을 탈리시키는 것이 용이하도록 함과 동시에 부상하면서 탈리된 이물질 중 비교적 비중이 작은 이물질을 부유시켜 제거하도록 하는 것이다. 즉 부상에 의한 고액분리가 수행될 수 있도록 하는 것이다.In addition, in the present invention, the reason for including an aeration device 940 such as an aeration pipe for aeration at the border of the lower filter media layer 920 and the upper filter media layer 910 in the secondary filtration tank 900 is the primary filtration and In the same manner, aeration filtration is performed to remove organic matter (BOD, SS) by aerobic microorganisms that grow attached to the filter media, and phosphorus absorbed by the phosphorus removing microorganisms in the aerobic tank 600 is removed, and additionally, the lower filter media layer during the backwashing process. The most deposition of foreign substances occurs at the border between the 920 and the upper filter media layer 910, making it easy to remove the foreign substances deposited on the filter media at the bordering part, and at the same time, the foreign substances having a relatively small specific gravity among the foreign substances detached while floating. to float and remove it. That is, the solid-liquid separation by injury is to be performed.

한편, 1차여과조(300)와 2차여과조(900)에서 발생하는 역세척수는 이송되어 1차침전조(200)에 저장하게 되고 이후 재처리된다.On the other hand, the backwash water generated in the primary filtration tank 300 and the secondary filtration tank 900 is transported and stored in the primary sedimentation tank 200, and then reprocessed.

그리고 2차침전조(800)와 2차여과조(900) 사이에 교반기가 있는 응집조(850)가 추가로 설치되고, 상기 응집조(850)와 2차여과조(900)는 유입수 유입라인에 의해 연결되어 상기 2차침전조(800)의 월류된 상징수를 고분자 응집제 등 응집제와 혼합하여 교반기에서 교반하는 응집조(850)를 통과함으로써 플록이 형성되어 2차여과조(900)에서 오염물질이 쉽게 여과 제거됨으로써 더욱 깨끗한 처리수(여과수)를 얻을 수 있다.And a coagulation tank 850 with a stirrer is additionally installed between the secondary sedimentation tank 800 and the secondary filtration tank 900, and the coagulation tank 850 and the secondary filtration tank 900 are connected by an influent inlet line. The symbol water overflowed from the secondary precipitation tank 800 is mixed with a coagulant such as a polymer coagulant and passed through the coagulation tank 850 stirred with a stirrer to form a floe, and contaminants are easily filtered out in the secondary filtration tank 900 This makes it possible to obtain cleaner treated water (filtered water).

이때 2차침전조(800)의 월류된 상징수가 응집조(850)를 통과한 후 유입수 유입라인에 의해 2차여과조(900)에 연결될 때 상부수층(930) 중 여재층 상면에 가깝게 유입수가 유입되도록 함으로써 응집조(850)에 의해 형성된 플록이 파괴되지 않도록 하는 것이 여과효율 향상에 도움이 될 수 있다.At this time, when the symbol water overflowing from the secondary sedimentation tank 800 passes through the coagulation tank 850 and is connected to the secondary filtration tank 900 by the influent inlet line, the influent flows in close to the upper surface of the filter media layer of the upper water layer 930. By doing so, it may help to improve the filtration efficiency to prevent the flocs formed by the coagulation tank 850 from being destroyed.

상기 2차여과조(900)를 거쳐 여과 처리된 최종 처리수는 하천으로 방류되거나, 처리수 저장조(미도시)에 보관하였다가 농업용수 또는 산업용수로 재이용한다.The final treated water filtered through the secondary filtration tank 900 is discharged to a river or stored in a treated water storage tank (not shown) and reused as agricultural or industrial water.

이상, 본 발명내용의 특정한 부분을 상세히 기술하였는바, 당업계의 통상의 지식을 가진 사람에게 있어서, 이러한 구체적인 기술은 단지 바람직한 실시양태일 뿐이며, 이에 의해 본 발명의 범위가 제한되는 것이 아닌 점은 명백할 것이다. 따라서 본 발명의 실질적인 범위는 첨부된 특허청구범위의 청구항과 그것들의 등가물에 의해 정의된다고 할 것이다.Above, a specific part of the present invention has been described in detail, for those of ordinary skill in the art, it is clear that this specific description is only a preferred embodiment, and the scope of the present invention is not limited thereby. something to do. Accordingly, the substantial scope of the present invention will be defined by the appended claims and their equivalents.

100 : 전처리시설 200 : 1차침전조
300 : 1차여과조 310 : 상부수층
320 : 제강 슬래그 여재층 330 : 하부수층
340 : 폭기장치 400 : 혐기조
500 : 무산소조 600 : 호기조
700 : 탈수조 800 : 2차침전조
850 : 응집조 900 : 2차여과조
910 : 상부여재층 920 : 하부여재층
930 : 상부수층 940 : 폭기장치100: pretreatment facility 200: primary sedimentation tank
300: primary filtration tank 310: upper water layer
320: steelmaking slag filter media layer 330: lower water layer
340: aeration device 400: anaerobic tank
500: anoxic tank 600: aerobic tank
700: dehydration tank 800: secondary precipitation tank
850: coagulation tank 900: secondary filtration tank
910: upper filter media layer 920: lower media layer
930: upper water layer 940: aeration device

Claims (5)

하, 폐수를 유입시켜 전처리하는 전처리시설; 상기 전처리시설을 거친 유입수를 침전시키는 1차침전조; 상기 1차침전조에서 월류되는 상징수의 일부를 유입시켜 제강 슬래그를 여재로 이용하여 상징수 중에 함유된 유기물 및 암모니아성 질소를 제거하기 위한 1차여과조; 상기 1차침전조에서 월류되는 상징수의 나머지를 유입시켜 혐기성 미생물에 의해 유기물은 메탄가스와 이산화탄소로 분해 제거하며, 인축적 박테리아는 유기물 저장과 관련하여 인을 방출하는 혐기조; 상기 1차여과조를 거친 여과수를 무산소조에 유입시키고, 상기 혐기조를 거친 처리수를 무산소조에 유입시켜 유입수 중에 있는 질산성 질소를 질소가스로 환원시키는 탈질반응을 수행하는 무산소조; 상기 무산소조를 거쳐 유입된 유입수 중에 포함된 암모니아성 질소를 질산성 질소로 산화시키는 산화반응을 수행하는 호기조; 상기 호기조를 거쳐 유입된 유입수를 침전시키는 2차침전조; 상기 2차침전조에서 월류되는 상징수를 유입시켜 제강 슬러지를 여재로 이용하여 상징수 중에 함유된 인성분, 유기물 및 부유물질을 제거하기 위한 2차여과조를 포함하며,
상기 1차여과조는 상부에 유입수 유입라인과 역세척수 유출라인이 형성되며 하부에 여과수 배출라인과 역세척수 유입라인이 연결되고, 상부수층, 제강 슬래그 여재층, 하부수층이 구비되며, 제강 슬래그 여재층과 하부수층 사이에 에어레이션을 위한 폭기장치를 포함하여 구성되고, 상기 2차여과조는 상부에 유입수 유입라인과 역세척수 유출라인이 형성되며 하부에 여과수 배출라인과 역세척수 유입라인이 연결되고, 상기 2차여과조의 하부에 형성되는 하부여재층, 상기 하부여재층 상부에 구성되며, 하부여재층을 형성하는 여재보다 입경이 큰 여재로 구성되는 상부여재층, 상기 하부여재층과 상기 상부여재층의 접경에 에어레이션을 위한 폭기장치를 포함하여 구성된 것을 특징으로 하는 제강 슬래그를 수처리 여재로 이용한 하, 폐수 고도처리 시스템.
Ha, pre-treatment facility for pre-treatment by introducing wastewater; a primary precipitation tank for precipitating the influent through the pretreatment facility; a primary filtration tank for removing organic matter and ammonia nitrogen contained in the symbol water by introducing a portion of the symbol water overflowing from the primary sedimentation tank and using the steelmaking slag as a filter medium; anaerobic tanks in which organic matter is decomposed and removed into methane gas and carbon dioxide by anaerobic microorganisms by introducing the remainder of the symbol water overflowing from the primary precipitation tank, and phosphorus-accumulating bacteria release phosphorus in relation to storage of organic matter; an anoxic tank that introduces the filtered water that has passed through the primary filtration tank into the anoxic tank, and introduces the treated water that has passed through the anaerobic tank into the anaerobic tank to perform a denitrification reaction for reducing nitrate nitrogen in the influent to nitrogen gas; an aerobic tank for performing an oxidation reaction of oxidizing ammonia nitrogen contained in the influent water introduced through the anaerobic tank to nitrate nitrogen; a secondary precipitation tank for precipitating influent water introduced through the aerobic tank; and a secondary filtration tank for removing phosphorus components, organic matter and suspended matter contained in the symbol water by introducing the symbol water overflowing from the secondary sedimentation tank and using the steelmaking sludge as a filter medium,
The primary filtration tank has an inflow water inlet line and a backwash water outflow line formed at the upper portion, and a filtered water outlet line and a backwash water inlet line are connected at the lower portion, and an upper water layer, a steelmaking slag filter media layer, and a lower water layer are provided, and a steelmaking slag filter media layer and an aeration device for aeration between the water layer and the lower water layer, wherein the secondary filtration tank has an inflow water inlet line and a backwash water outflow line formed at the upper portion, and a filtered water outlet line and a backwash water inlet line are connected at the bottom, and the 2 A lower media layer formed under the tea filtration tank, an upper media layer formed on the upper part of the lower media layer and made of a filter media having a particle diameter larger than that of the media forming the lower media layer, and the border between the lower media layer and the upper media layer An advanced wastewater treatment system using steelmaking slag as a water treatment medium, characterized in that it includes an aeration device for aeration.
 제1항에 있어서,
상기 1차여과조와 2차여과조에서 발생하는 역세수는 1차침전조로 반송하여 재처리하고, 호기조에서 배출되는 처리수 중 반송수를 무산소조로 반송하며, 1차침전조와 2차침전조에서 발생하는 슬러지는 탈수기에서 탈수처리하고, 탈수여액은 혐기조로 반송하여 재처리하는 것을 특징으로 하는 제강 슬래그를 수처리 여재로 이용한 하, 폐수 고도처리 시스템.
According to claim 1,
The backwash water generated in the primary and secondary filtration tanks is returned to the first settling tank for reprocessing, the returned water from the treated water discharged from the aerobic tank is returned to the anoxic tank, and sludge generated from the first and second settling tanks is dehydrated in a dehydrator, and the dewatered filtrate is returned to the anaerobic tank for reprocessing.
 삭제delete 삭제delete 제1항에 있어서,
상기 2차침전조와 2차여과조 사이에 교반기가 있는 응집조가 추가로 구성되고, 상기 2차여과조와 응집조는 유입수 유입라인에 의해 연결되는 것을 특징으로 하는 제강 슬래그를 수처리 여재로 이용한 하, 폐수 고도처리 시스템.
According to claim 1,
A coagulation tank with a stirrer is additionally configured between the secondary precipitation tank and the secondary filtration tank, and the secondary filtration tank and the coagulation tank are connected by an influent inlet line. system.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100759833B1 (en) 2006-04-21 2007-09-18 한국과학기술연구원 Active material for biological treatment of sewage and waste water, microbic media containing the active material and method for preparing the same
KR20090022168A (en) * 2007-08-29 2009-03-04 고려대학교 산학협력단 Treatment method of livestock waste water and system thereof
KR20100001316A (en) 2008-06-26 2010-01-06 현대제철 주식회사 Method of treating highly concentrated organic wastewater using recycled electric arc furnace dust
KR20100046990A (en) * 2008-10-28 2010-05-07 현대제철 주식회사 Reaction catalyst using steel slag for treating wastewater, and method for treating wastewater
KR101300767B1 (en) * 2013-07-24 2013-08-29 코오롱워터앤에너지 주식회사 Stacked filtering apparatus with high filtering and washing efficiency
KR101336875B1 (en) 2012-01-06 2013-12-04 (주)한라산업개발 Advanced treatment system of wastewater
KR20160017818A (en) * 2014-08-06 2016-02-17 경기도 System for advanced wastewater treatment using optimal micro-organism of pollutants and the method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100759833B1 (en) 2006-04-21 2007-09-18 한국과학기술연구원 Active material for biological treatment of sewage and waste water, microbic media containing the active material and method for preparing the same
KR20090022168A (en) * 2007-08-29 2009-03-04 고려대학교 산학협력단 Treatment method of livestock waste water and system thereof
KR20100001316A (en) 2008-06-26 2010-01-06 현대제철 주식회사 Method of treating highly concentrated organic wastewater using recycled electric arc furnace dust
KR20100046990A (en) * 2008-10-28 2010-05-07 현대제철 주식회사 Reaction catalyst using steel slag for treating wastewater, and method for treating wastewater
KR101336875B1 (en) 2012-01-06 2013-12-04 (주)한라산업개발 Advanced treatment system of wastewater
KR101300767B1 (en) * 2013-07-24 2013-08-29 코오롱워터앤에너지 주식회사 Stacked filtering apparatus with high filtering and washing efficiency
KR20160017818A (en) * 2014-08-06 2016-02-17 경기도 System for advanced wastewater treatment using optimal micro-organism of pollutants and the method thereof

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