KR20100128534A - A processing apparatus for wastewater treatment - Google Patents

A processing apparatus for wastewater treatment Download PDF

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KR20100128534A
KR20100128534A KR1020090046977A KR20090046977A KR20100128534A KR 20100128534 A KR20100128534 A KR 20100128534A KR 1020090046977 A KR1020090046977 A KR 1020090046977A KR 20090046977 A KR20090046977 A KR 20090046977A KR 20100128534 A KR20100128534 A KR 20100128534A
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wastewater
steam
pipe
storage tank
tank
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KR1020090046977A
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Korean (ko)
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KR101125864B1 (en
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서진수
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주식회사 에이치엔
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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
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/043—Details
    • 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
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/048—Purification of waste water by evaporation
    • 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
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C02F2201/005—Valves
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
    • 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
    • Y02W10/20—Sludge processing

Abstract

PURPOSE: A wastewater processing apparatus is provided to minimize the scale inside a wastewater pipe of a heat-exchanging unit for improving the wastewater processing efficiency. CONSTITUTION: A wastewater processing apparatus comprises a wastewater storage(100), a separator, a concentrate reservoir(300), a condenser(210), a hydrometer(302), a valve(303), and a concentrate feed pump(301). The wastewater storage is for storing wastewater. The separator separates the wastewater into steam and condensed wastewater. The concentrate reservoir condenses the steam.

Description

폐수처리장치{A Processing Apparatus for Wastewater Treatment}A Processing Apparatus for Wastewater Treatment

본 발명은 농축액의 농축도를 제어함으로써 폐수처리효율을 향상시킬 뿐만 아니라 열교환유니트의 폐수관 내 스케일을 최소화하여 폐수처리성능이 향상되도록 한 폐수처리장치에 관한 것이다.The present invention relates to a wastewater treatment apparatus which not only improves the wastewater treatment efficiency by controlling the concentration of the concentrate, but also improves the wastewater treatment performance by minimizing the scale in the wastewater pipe of the heat exchange unit.

일반적으로 공업폐수등을 정화하여 처리하는 방법으로서는 응집제를 폐수에 투여하여 응집된 이물질이 침강되도록 하여 제거하는 방법과, 폐수중에 포함된 이물질을 스크린으로 걸러내어 제거하는 방법이 있다.In general, methods for purifying and treating industrial wastewater include a method of administering a flocculant to the wastewater so that the aggregated foreign matters are settled and removing the foreign matter contained in the wastewater through a screen.

이와 같이 1차적으로 이물질이 걸러진 폐수를 2차 처리시설로 공급하여서, 폐수를 가열하여 증발시킴으로써 잔류하는 슬러지를 분리시키고 있다.In this way, the wastewater from which the foreign matter is first filtered is supplied to the secondary treatment facility, and the remaining sludge is separated by heating and evaporating the wastewater.

이와 같은 증발농축기를 이용한 폐수처리과정은 폐수를 증기와 잔류농축액으로 분리하는 과정으로써, 농축과정의 반복에 따라 농축액의 농축도가 상승하게 되면 비점(沸點)이 상승하게 되어 증발효율이 급격하게 감소하게 된다.The wastewater treatment process using the evaporative concentrator is a process of separating the wastewater into steam and residual condensate. As the concentration of the concentrate increases with increasing repetition of the condensation process, the boiling point increases and the evaporation efficiency rapidly decreases. do.

이때 농축액중 무기염류 또는 유기염류가 증발기(열교환기) 내부에 부착되게 되어 열전달효율을 저하시킨다. At this time, the inorganic salts or organic salts in the concentrate are attached to the inside of the evaporator (heat exchanger) to lower the heat transfer efficiency.

일예의 폐수처리장치가 한국특허등록 제0870449호에 개시되고 도 1에 도시되 어 있다.An example wastewater treatment apparatus is disclosed in Korean Patent Registration No. 0870449 and shown in FIG. 1.

이는 챔버(10)와, 저온의 유체가 흐르는 냉각관을 구비하는 응축부(20)와, 결로현상으로 냉각관의 표면에 생성된 응축수를 수용하는 응축수받이(30) 및 응축수탱크(60)와, 냉각관으로 냉각수를 순환 공급하는 쿨링타워(40)와, 폐수를 가열하여 챔버(10) 내부로 공급하는 폐수가열부(50)를 구비한다.The condensation unit 20 includes a chamber 10, a condensation unit 20 including a cooling tube through which a low temperature fluid flows, and a condensate receiver 30 and a condensate tank 60 to receive condensate generated on the surface of the cooling condensation due to condensation. And a cooling tower 40 for circulating and supplying the cooling water to the cooling tube, and a waste water heating unit 50 for heating the waste water and supplying it into the chamber 10.

이 장치는 가열된 폐수가 챔버(10) 내부를 경유할때 폐수로부터 발생된 증기는 냉각관의 외주면에 응축되게 되므로 폐수내 수분이 일정량 저감되며, 나머지 폐수들은 폐수탱크(70)로 회수되고 폐수가열부(50) 및 챔버(10)를 반복 순환하면서 폐수를 증기화시키고 응축시켜서 최종적으로 소량의 슬러지만을 배출할 수 있도록 한 것이다. Since the steam generated from the wastewater is condensed on the outer circumferential surface of the cooling tube when the heated wastewater passes through the chamber 10, the device reduces a certain amount of water in the wastewater, and the remaining wastewater is recovered to the wastewater tank 70 and the wastewater. By repeatedly circulating the heating unit 50 and the chamber 10, the waste water is vaporized and condensed to finally discharge only a small amount of sludge.

그러나 상기와 같은 장치는 폐수가열부(50)에 의해서 가열된 폐수의 증기가 그대로 챔버(10)내에서 응축되어 배출됨으로써, 발생된 폐수의 증기열을 재활용할 수 없게 된다. 이에 따라서 폐수를 가열시키기 위한 에너지소비가 커질 뿐만 아니라 폐수탱크(70), 폐수가열부(50) 및 챔버(10)를 순환하는 폐수의 반복 순환횟수가 증가되어 폐수처리시간이 길어지게 된다.However, in the above apparatus, since the steam of the wastewater heated by the wastewater heating unit 50 is condensed and discharged in the chamber 10 as it is, the steam heat of the generated wastewater cannot be recycled. Accordingly, not only the energy consumption for heating the wastewater increases, but also the number of repetitive circulations of the wastewater circulating in the wastewater tank 70, the wastewater heater 50, and the chamber 10 increases the wastewater treatment time.

또한, 상기와 같은 장치는 농축과정의 반복에 따라 농축액의 농축도가 상승하게 되면 비점(沸點)이 상승하게 되어 증발효율이 급격하게 감소하게 되며, 이때 농축액중 무기염류 또는 유기염류가 폐수가열주(50)의 폐수순환관 내부에 부착되게 되어 열전달효율을 저하시킨다. In addition, in the above apparatus, when the concentration of the concentrate is increased in accordance with the repetition of the concentration process, the boiling point is increased and the evaporation efficiency is drastically reduced.In this case, the inorganic salts or organic salts in the concentrate are wastewater heat column ( 50) is attached inside the waste water circulation pipe, thereby lowering the heat transfer efficiency.

본 발명은 상기와 같은 문제점을 해결하기 위하여 창출된 것으로써, 농축액의 농축도를 제어하여 일정한 비점을 유지하고, 일정 농축도 이상의 농축액의 순환을 방지할 수 있도록 하여 증발기 내부의 스케일 발생을 최소화할 수 있도록 한 폐수처리장치를 제공하는 데 그 목적이 있다.The present invention was created to solve the above problems, to control the concentration of the concentrate to maintain a constant boiling point, to prevent the circulation of the concentrate above a certain concentration can minimize the generation of scale inside the evaporator The purpose is to provide a wastewater treatment system.

또한 본 발명은 폐수를 가열시키는 에너지 소비를 절감시키고 폐수를 보다 효율적으로 가열시켜서 열원의 효율적인 이용을 가능하게 한 폐수처리장치를 제공하는 데 그 목적이 있다.It is also an object of the present invention to provide a wastewater treatment apparatus which reduces energy consumption for heating wastewater and heats the wastewater more efficiently to enable efficient use of a heat source.

본 발명의 다른 목적은 가열된 폐수로부터 증기와 농축폐수를 보다 간편하게 분리시킬 수 있도록 한 폐수처리장치를 제공하는 데 있다.Another object of the present invention is to provide a wastewater treatment apparatus that can more easily separate steam and concentrated wastewater from heated wastewater.

상기 목적을 달성하는 본 발명은 응집제의 투여 또는 스크린을 통한 입자물질이 제거된 폐수를 처리하는 폐수처리장치에 있어서,In the present invention to achieve the above object, in the wastewater treatment apparatus for treating wastewater from which particulate matter is removed through the administration of a flocculant or a screen,

상기 폐수가 저장되는 폐수저장조와; 상기 폐수저장조로부터의 폐수를 가열하여 증기와 농축폐수로 분리시키는 분리수단과; 상기 농축폐수를 저장하는 농축액저장조와; 상기 증기를 응축시키는 응축기와; 상기 농축액저장조내의 농축액의 비중을 측정하는 비중계와; 비중계의 측정비중에 따라 상기 농축액저장조와 상기 폐수저장조 사이의 유로를 개폐시키며, 설정된 비중 이하의 상기 농축액저장조내의 상등수가 상기 폐수저장조로 유입되도록 개방되는 밸브와; 설정된 비중 이상의 상 기 농축액저장조내의 농축액을 배출시키는 농축액이송펌프;를 구비하여 된 것을 특징으로 한다.A wastewater storage tank for storing the wastewater; Separating means for heating the wastewater from the wastewater storage tank to separate the steam and the concentrated wastewater; A concentrate storage tank for storing the concentrated wastewater; A condenser for condensing the steam; A hydrometer for measuring the specific gravity of the concentrate in the concentrate reservoir; A valve that opens and closes a flow path between the concentrate storage tank and the wastewater storage tank according to a measurement ratio of a hydrometer, and opens the supernatant in the concentrate storage tank having a predetermined specific gravity or less to flow into the wastewater storage tank; And a concentrated liquid transfer pump for discharging the concentrated liquid in the concentrated liquid storage tank having a predetermined specific gravity or more.

또한, 본 발명 장치에 있어서, 상기 분리수단은 상하방향으로 길게 형성되고 그 상단부로부터 상기 폐수저장조의 폐수가 공급되는 적어도 하나의 제1폐수관과, 상기 제1폐수관을 감싸는 제1스팀관과, 상기 제1스팀관의 내부에 가열원으로서 스팀을 공급시켜서 상기 제1폐수관을 가열시키는 스팀공급기를 구비하는 제1열교환유니트와;In addition, in the device of the present invention, the separating means is elongated in the vertical direction and at least one of the first waste water pipe to which the waste water of the waste water storage tank is supplied from the upper end, and the first steam pipe surrounding the first waste water pipe; A first heat exchange unit having a steam supplyer for supplying steam as a heating source inside the first steam pipe to heat the first waste water pipe;

상기 제1폐수관의 하단부에 결합되어 상기 제1열교환유니트로부터 가열된 폐수가 유입되는 제1침전조와;A first sedimentation tank coupled to a lower end of the first wastewater pipe to introduce heated wastewater from the first heat exchange unit;

상기 제1침전조의 상부 부분에 발생된 상기 폐수의 수증기가 유입되는 제1보조침전조와;A first auxiliary settling tank into which water vapor of the wastewater generated in an upper portion of the first settling tank flows;

상기 제1침전조 및 제1보조침전조의 하부 부분에 침전된 폐수가 공급되며 상하방향으로 길게 형성된 적어도 하나의 제2폐수관과, 상기 제2폐수관을 감싸며 상기 제1보조침전조로부터의 폐수 수증기가 유입되어 상기 제2폐수관을 가열시키는 제2스팀관을 구비하는 제2열교환유니트와;Waste water precipitated in the first settling tank and the lower part of the first auxiliary settling tank and at least one second wastewater pipe formed long in the vertical direction, and the second wastewater pipe surrounds the second wastewater pipe and the wastewater vapor from the first auxiliary settling tank A second heat exchange unit having a second steam pipe flowing in and heating the second waste water pipe;

상기 제2폐수관의 하단부에 결합되어 상기 제2열교환유니트로부터 가열된 폐수가 유입되는 제2침전조와;A second settling tank coupled to a lower end of the second wastewater pipe, into which heated wastewater flows from the second heat exchange unit;

상기 제2침전조의 상부 부분에 발생된 상기 폐수의 수증기가 유입되는 제2보조침전조;를 구비하여서,And a second subsidiary settling tank into which water vapor of the wastewater generated in an upper portion of the second settling tank flows.

상기 제2침전조 및 제2보조침전조의 하부 부분에 침전된 폐수가 상기 농축액 저장조로 이동되고, 상기 제2보조침전조의 상부 부분에 발생된 증기가 상기 응축기를 통하여 응축되어 배출하도록 된 것을 특징으로 한다.Wastewater precipitated in the lower portion of the second and second subsidiary settling tank is moved to the concentrate storage tank, and the steam generated in the upper portion of the second subsidiary settling tank is condensed and discharged through the condenser. .

본 발명 장치는 농축액저장조내의 농축액의 농축도를 측정하는 비중계에 의해서 폐수저장조로 순환되는 농축액이 밸브로 제어됨으로써, 폐수의 비점(沸點) 상승을 방지하여 증발효율을 향상시키며 열교환유니트의 폐수관 내 스케일을 최소화하여 폐수처리성능이 향상되도록 한다.The apparatus of the present invention is to control the concentration of the concentrated liquid circulated to the waste water storage tank by a hydrometer measuring the concentration of the concentrated liquid in the storage tank, to prevent the rise of the boiling point of the waste water to improve the evaporation efficiency and scale in the waste water pipe of the heat exchange unit To minimize wastewater treatment performance.

본 발명 장치는 스팀공급기의 스팀을 통하여 가열 증발된 폐수의 증기열을 이용하여 폐수를 재차 가열하여 증발시키는데 이용함으로써 에너지소비를 절감시킨다.The apparatus of the present invention reduces the energy consumption by using the steam heat of the waste water, which has been heated and evaporated through the steam of the steam supplier, to heat and evaporate the waste water.

또한, 장치에 채용되는 제1,2열교환유니트를 상하로 길게 형성시킴으로써, 폐수가 중력에 의해 하방향으로 이동되고 동시에 스팀열에 의해 가열되게 되며, 제1,2침전조에는 비중차에 의해 하부에는 농축폐수가 침전되게 되고 상부에는 폐수증기가 형성되도록 하여 증기와 농축폐수의 분리를 간편하게 한다.In addition, by forming the first and second heat exchange units, which are employed in the apparatus, up and down in length, the waste water is moved downward by gravity and simultaneously heated by steam heat, and concentrated in the lower part by the specific gravity difference in the first and second settling tanks. Waste water is settled and waste water vapor is formed at the top to simplify separation of steam and concentrated waste water.

본 발명 실시예의 폐수처리장치는 공업폐수 등을 정화하여 처리하는 장치로서, 응집제의 투여나 기계적 스크린장치로 폐수중에 포함된 이물질들을 1차적으로 처리한 폐수를 2차적으로 처리하는 장치이다. The wastewater treatment apparatus according to the embodiment of the present invention is an apparatus for purifying and treating industrial wastewater and the like, and is a device for secondarily treating wastewater in which foreign substances contained in the wastewater are primarily treated by the administration of a flocculant or a mechanical screen device.

본 발명 실시예의 폐수처리장치는 1차적으로 이물질이 걸러진 폐수를 가열하여 증발시킴으로써 잔류하는 슬러지를 농축하여 분리시킨다.The wastewater treatment apparatus of the embodiment of the present invention concentrates and separates the remaining sludge by first heating and evaporating the wastewater from which foreign substances are filtered.

특히, 본 발명 실시예의 폐수처리장치는 일정 비중 이상의 농축액이 열교환기로 순환되는 것을 방지하여 폐수의 증발효율을 높이고, 열교환기내의 스케일 발생을 최소화하여 폐수처리성능을 향상시킨다.In particular, the wastewater treatment apparatus of the embodiment of the present invention prevents the concentrated liquid of a specific gravity or more from being circulated to the heat exchanger to increase the evaporation efficiency of the wastewater and to minimize the generation of scale in the heat exchanger to improve the wastewater treatment performance.

본 발명 실시예의 장치를 나타낸 도 2를 참조하면, 이 장치는 상기와 같이 1차적으로 이물질이 걸러진 폐수가 저장되는 폐수저장조(100)와; 상기 폐수저장조(100)로부터의 폐수를 가열하여 증기와 농축폐수로 분리시키는 분리수단과; 상기 농축폐수를 저장하는 농축액저장조(300)와; 상기 증기를 응축시키는 응축기(210)와; 상기 농축액저장조(300)내의 농축액의 비중을 측정하는 비중계(302)와; 상기 비중계(302)의 측정비중에 따라 상기 농축액저장조(300)와 상기 폐수저장조(100) 사이의 유로를 개폐시키며, 설정된 비중 이하의 상기 농축액저장조(300)내의 상등수가 상기 폐수저장조(100)로 유입되도록 개방되는 밸브(303)와; 설정된 비중 이상의 상기 농축액저장조(300)내의 농축액을 배출시키는 농축액이송펌프(301);를 구비한다.Referring to Figure 2 showing the device of the embodiment of the present invention, the device is a wastewater storage tank 100 for storing the wastewater filtered primarily foreign matter as described above; Separating means for heating the wastewater from the wastewater storage tank 100 into steam and concentrated wastewater; A concentrate storage tank 300 for storing the concentrated wastewater; A condenser for condensing the steam; A hydrometer (302) for measuring the specific gravity of the concentrate in the concentrate reservoir 300; Opening and closing the flow path between the concentrate storage tank 300 and the wastewater storage tank 100 according to the measurement ratio of the hydrometer 302, the supernatant in the concentrate storage tank 300 of less than the set specific gravity to the wastewater storage tank 100. A valve 303 which is opened to be introduced; And a concentrated liquid transfer pump 301 for discharging the concentrated liquid in the concentrated liquid storage tank 300 having a predetermined specific gravity or more.

상기 비중계(302)로는 일반적인 TDS측정기를 사용한다.As the hydrometer 302, a general TDS meter is used.

상기 분리수단은 상하방향으로 길게 형성되고 그 상단부로부터 상기 폐수저장조(100)의 폐수가 공급되는 적어도 하나의 제1폐수관(111)과, 상기 제1폐수관(111)을 감싸는 제1스팀관(112)과, 상기 제1스팀관(112)의 내부에 가열원으로서 스팀을 공급시켜서 상기 제1폐수관(111)을 가열시키는 스팀공급기(150)를 구비하는 제1열교환유니트(110)와;The separating means is formed long in the vertical direction and at least one first wastewater pipe 111 to which the wastewater of the wastewater storage tank 100 is supplied from an upper end portion thereof, and a first steam pipe surrounding the first wastewater pipe 111. A first heat exchange unit (110) having a steam supplier (150) for heating the first wastewater pipe (111) by supplying steam as a heating source inside the first steam pipe (112); ;

상기 제1폐수관(111)의 하단부에 결합되어 상기 제1열교환유니트(110)로부터 가열된 폐수가 유입되는 제1침전조(113)와;A first sedimentation tank 113 coupled to a lower end of the first wastewater pipe 111 and into which wastewater heated from the first heat exchange unit 110 flows;

상기 제1침전조(113)의 상부 부분에 발생된 상기 폐수의 수증기가 유입되는 제1보조침전조(114)와;A first auxiliary settling tank (114) into which water vapor of the wastewater generated in an upper portion of the first settling tank (113) flows;

상기 제1침전조(113) 및 제1보조침전조(114)의 하부 부분에 침전된 폐수가 공급되며 상하방향으로 길게 형성된 적어도 하나의 제2폐수관(121)과, 상기 제2폐수관(121)을 감싸며 상기 제1보조침전조(114)로부터의 폐수 수증기가 유입되어 상기 제2폐수관(121)을 가열시키는 제2스팀관(122)을 구비하는 제2열교환유니트(120)와;The at least one second wastewater pipe 121 and the second wastewater pipe 121 are formed to extend in the vertical direction and are supplied with the wastewater precipitated in the lower portions of the first settling tank 113 and the first auxiliary settling tank 114. A second heat exchange unit (120) having a second steam pipe (122) for wrapping the waste water vapor from the first auxiliary settling tank (114) and heating the second waste water pipe (121);

상기 제2폐수관(121)의 하단부에 결합되어 상기 제2열교환유니트(120)로부터 가열된 폐수가 유입되는 제2침전조(123)와;A second sedimentation tank 123 coupled to the lower end of the second waste water pipe 121 and into which the waste water heated from the second heat exchange unit 120 flows;

상기 제2침전조(123)의 상부 부분에 발생된 상기 폐수의 수증기가 유입되는 제2보조침전조(124);를 구비하여서,And a second subsidiary settling tank 124 into which water vapor of the wastewater generated in the upper portion of the second settling tank 123 flows.

상기 제2침전조(123) 및 제2보조침전조(124)의 하부 부분에 침전된 폐수가 상기 농축액저장조(300)으로 이동되고, 상기 제2보조침전조(124)의 상부 부분에 발생된 증기가 상기 응축기(210)를 통하여 응축되어 배출하도록 한다.Wastewater precipitated in the lower portion of the second settling tank 123 and the second auxiliary settling tank 124 is moved to the concentrate storage tank 300, the steam generated in the upper portion of the second auxiliary settling tank 124 is Condensate through the condenser 210 to be discharged.

또한, 본 발명 실시예의 장치는 상기 폐수저장조(100)로부터 상기 제1폐수관(111)으로 폐수를 공급시키는 폐수공급펌프(101)와, 상기 제1침전조(113) 및 제1보조침전조(114)의 하부 부분에 침전된 폐수를 상기 제2폐수관(121)으로 공급시키는 제1폐수순환펌프(130) 및 상기 제2침전조(123) 및 제2보조침전조(124)의 하부 부분에 침전된 폐수를 상기 농축액저장조(300)로 공급시키는 제2폐수순환펌프(140) 를 구비한다.In addition, the device of the embodiment of the present invention is a wastewater supply pump 101 for supplying wastewater from the wastewater storage tank 100 to the first wastewater pipe 111, the first settling tank 113 and the first auxiliary settling tank 114 The first wastewater circulation pump 130 and the second sedimentation tank 123 and the second subsidiary sedimentation tank 124 for supplying the wastewater precipitated in the lower portion of the) to the second wastewater pipe 121 A second wastewater circulation pump 140 for supplying the wastewater to the concentrate storage tank 300 is provided.

또한, 본 발명 장치는 상기 제1스팀관(112)내의 스팀의 일부가 상기 제2스팀관(122)으로 공급되도록 공급라인(115)에 의해서 연결되어 있으며, 제1스팀관(112)내부의 과도한 스팀압력은 배출라인(116)에 의해서 외부로 배출되도록 되어 있다.In addition, the apparatus of the present invention is connected by the supply line 115 so that a portion of the steam in the first steam pipe 112 is supplied to the second steam pipe 122, the first steam pipe 112 inside Excessive steam pressure is to be discharged to the outside by the discharge line 116.

상기와 같은 구성을 가지는 본 발명 폐수처리장치는 다음과 같이 가동된다.The wastewater treatment apparatus of the present invention having the above configuration is operated as follows.

먼저, 상기와 같이 1차 처리된 폐수가 폐수저장조(100)로 유입되어 저장되고, 스팀공급기(150)를 통하여 제1스팀관(112)에 고온의 스팀이 공급된다.First, the wastewater treated as described above is introduced into and stored in the wastewater storage tank 100, and high temperature steam is supplied to the first steam pipe 112 through the steam supplier 150.

이어서 폐수저장조(100)의 하부로부터 폐수가 폐수공급펌프(101)에 의해서 제1열교환유니트(110)의 제1폐수관(111)으로 공급되어 하방향으로 흐르게 되며, 이때 제1스팀관(112)에 공급된 고온의 스팀에 의해서 제1폐수관(111)의 폐수가 가열되게 된다.Subsequently, the wastewater is supplied from the lower portion of the wastewater storage tank 100 to the first wastewater pipe 111 of the first heat exchange unit 110 by the wastewater supply pump 101 and flows downward. The waste water of the first wastewater pipe 111 is heated by the high temperature steam supplied to.

가열된 폐수는 제1침전조(113)내에서 일부가 증발되어 상등하게 되고 일부는 침전되게 되며, 침전된 폐수는 제1폐수순환펌프(130)에 의해서 제2폐수관(121)으로 공급된다.The heated wastewater is partially evaporated in the first sedimentation tank 113 and is partially settled, and the precipitated wastewater is supplied to the second wastewater pipe 121 by the first wastewater circulation pump 130.

또한 제1침전조(113)에 상등된 폐수 증기는 제1보조침전조(114)로 수집되게 되며, 제1보조침전조(114)에 수집된 증기중 일부는 응축되어 침전되게 되며 침전된 폐수는 제1침전조(113)에 침전된 폐수와 함께 제1폐수순환펌프(130)에 의해서 제2폐수관(121)으로 공급된다.In addition, the wastewater steam equal to the first settling tank 113 is collected by the first auxiliary settling tank 114, some of the steam collected in the first auxiliary settling tank 114 is condensed to precipitate and the precipitated wastewater is the first The wastewater precipitated in the sedimentation tank 113 is supplied to the second wastewater pipe 121 by the first wastewater circulation pump 130.

한편, 제1보조침전조(114)에 공급된 폐수 증기는 공급라인(115)을 통하여 제2스팀관(122)으로 공급되어서, 제2폐수관(121)을 흐르는 폐수를 재차 가열시키게 된다.Meanwhile, the wastewater steam supplied to the first auxiliary precipitation tank 114 is supplied to the second steam pipe 122 through the supply line 115 to heat the wastewater flowing through the second wastewater pipe 121 again.

또한, 상기 제2스팀관(122)과 상기 스팀공급기(150) 사이에는 스팀공급기(150)의 스팀이 공급되는 제2공급라인(117)이 더 연결되어서 보다 고온으로 가열할 수 있도록 하였다.In addition, between the second steam pipe 122 and the steam supplier 150 is further connected to the second supply line 117 to which the steam of the steam supplier 150 is supplied to be heated to a higher temperature.

상기 제2폐수관(121)에서 재차 가열된 폐수는 제2침전조(123)내에서 일부가 증발되어 상등하게 되고 일부는 침전되게 되며, 침전된 폐수는 제2폐수순환펌프(230)에 의해서 농축액저장조(300)로 공급된다.The wastewater heated again in the second wastewater pipe 121 is partially evaporated in the second sedimentation tank 123 to become equal and partially precipitated, and the precipitated wastewater is concentrated by the second wastewater circulation pump 230. It is supplied to the reservoir 300.

또한, 제2침전조(123)에 상등된 폐수 증기는 제2보조침전조(124)로 수집되게 되고, 제2보조침전조(124)에 수집된 증기중 일부는 응축되어 침전되게 되며, 침전된 폐수는 제2침전조(123)에 침전된 폐수와 함께 제2폐수순환펌프(230)에 의해서 농축액저장조(300)로 공급된다.In addition, the wastewater steam equal to the second settling tank 123 is collected by the second auxiliary settling tank 124, some of the steam collected in the second auxiliary settling tank 124 is condensed and precipitated, the precipitated wastewater is The wastewater precipitated in the second settling tank 123 is supplied to the concentrate storage tank 300 by the second wastewater circulation pump 230.

한편, 제2보조침전조(124)에서 상등된 증기는 응축기(210)를 통하여 응축된다.On the other hand, the steam equalized in the second auxiliary precipitation tank 124 is condensed through the condenser 210.

상기 농축액저장조(300)에 침전된 폐수 농축액들은 농축액이송펌프(301)를 통하여 농축액처리시설인 건조장치(미도시)에서 건조되고 압축되어 케이크화된다.The wastewater concentrates precipitated in the concentrate storage tank 300 are dried, compressed and caked in a drying apparatus (not shown) which is a concentrate treatment facility through the concentrate transfer pump 301.

이때 농축액저장조(300)내의 농축액은 비중계(302)에 의해서 그 비중이 측정되며, 설정된 비중 이하의 상등수는 밸브(303)의 개방으로 폐수저장조(100)로 유입되어 순환되게 되며, 설정된 비중 이하는 고농도 농축액은 펌프(301)를 통하여 배출된다. At this time, the concentrated liquid in the concentrate storage tank 300 is measured by the specific gravity of the hydrometer 302, the supernatant below the set specific gravity is introduced into the waste water storage tank 100 by the opening of the valve 303 is circulated, and the set specific gravity is less than The high concentration concentrate is discharged through the pump 301.

상술한 바와 같은 본 발명 폐수처리장치는 농축액저장조(300)내의 농축액이 비중계(302)에 의해서 제어되는 밸브(303)의 개폐로 폐수저장조(100)로 유입되는 고농도의 농축액의 유입을 차단시킴으로써, 폐수의 비점(沸點) 상승을 방지하여 증발효율을 향상시키며 열교환유니트의 폐수관 내 스케일을 최소화하여 폐수처리성능이 향상되도록 한다.The wastewater treatment apparatus of the present invention as described above blocks the inflow of the concentrated liquid flowing into the wastewater storage tank 100 by opening and closing the valve 303 controlled by the hydrometer 302. It improves the evaporation efficiency by preventing the boiling point of waste water and improves the waste water treatment performance by minimizing the scale in the waste water pipe of the heat exchange unit.

또한 본 발명 장치는 스팀공급기(150)의 스팀을 통하여 폐수를 가열시키고, 가열 증발된 폐수의 증기열을 이용하여 폐수를 재차 가열하여 증발시키는데 이용함으로써 에너지소비를 절감시킨다.In addition, the apparatus of the present invention reduces the energy consumption by heating the wastewater through the steam of the steam supplier 150, and by using the steam heat of the heat evaporated wastewater to heat and evaporate the wastewater again.

또한, 장치에 채용되는 제1,2열교환유니트(110)(120)를 상하로 길게 형성시킴으로써, 폐수가 중력에 의해 하방향으로 이동되면서 동시에 스팀열에 의해 가열되게 되며, 제1,2침전조(113)(123)에는 비중차에 의해 하부에는 농축폐수가 침전되게 되고 상부에는 폐수증기가 형성되도록 하여 증기와 농축폐수의 분리를 간편하게 한다.In addition, by forming the first and second heat exchange unit (110, 120) to be vertically extended to be employed in the device, the waste water is moved downward by gravity and simultaneously heated by steam heat, the first and second settling tank 113 In 123, the concentrated wastewater is precipitated in the lower portion due to the specific gravity difference, and the waste water vapor is formed in the upper portion to simplify the separation of the steam and the concentrated wastewater.

도 1은 종래 폐수처리장치를 나타낸 개략도,1 is a schematic view showing a conventional wastewater treatment apparatus,

도 2는 본 발명 폐수처리장치를 나타낸 개략도이다.2 is a schematic view showing the wastewater treatment apparatus of the present invention.

Claims (2)

응집제의 투여 또는 스크린을 통한 입자물질이 제거된 폐수를 처리하는 폐수처리장치에 있어서,A wastewater treatment apparatus for treating wastewater from which particulate matter has been removed through administration of a flocculant or a screen, 상기 폐수가 저장되는 폐수저장조(100)와;A wastewater storage tank 100 in which the wastewater is stored; 상기 폐수저장조(100)로부터의 폐수를 가열하여 증기와 농축폐수로 분리시키는 분리수단과;Separating means for heating the wastewater from the wastewater storage tank 100 into steam and concentrated wastewater; 상기 농축폐수를 저장하는 농축액저장조(300)와;A concentrate storage tank 300 for storing the concentrated wastewater; 상기 증기를 응축시키는 응축기(210)와;A condenser for condensing the steam; 상기 농축액저장조(300)내의 농축액의 비중을 측정하는 비중계(302)와;A hydrometer (302) for measuring the specific gravity of the concentrate in the concentrate reservoir 300; 상기 비중계(302)의 측정비중에 따라 상기 농축액저장조(300)와 상기 폐수저장조(100) 사이의 유로를 개폐시키며, 설정된 비중 이하의 상기 농축액저장조(300)내의 상등수가 상기 폐수저장조(100)로 유입되도록 개방되는 밸브(303)와;Opening and closing the flow path between the concentrate storage tank 300 and the wastewater storage tank 100 according to the measurement ratio of the hydrometer 302, the supernatant in the concentrate storage tank 300 of less than the set specific gravity to the wastewater storage tank 100. A valve 303 which is opened to be introduced; 설정된 비중 이상의 상기 농축액저장조(300)내의 농축액을 배출시키는 농축액이송펌프(301);를 구비하여 된 것을 특징으로 하는 폐수처리장치. And a concentrated liquid transfer pump (301) for discharging the concentrated liquid in the concentrated liquid storage tank (300) of a predetermined specific gravity or more. 제 1 항에 있어서, 상기 분리수단은 상하방향으로 길게 형성되고 그 상단부로부터 상기 폐수저장조(100)의 폐수가 공급되는 적어도 하나의 제1폐수관(111)과, 상기 제1폐수관(111)을 감싸는 제1스팀관(112)과, 상기 제1스팀관(112)의 내부에 가열원으로서 스팀을 공급시켜서 상기 제1폐수관(111)을 가열시키는 스팀공급기(150)를 구비하는 제1열교환유니트(110)와;The method of claim 1, wherein the separating means is formed in the vertical direction long and at least one of the first wastewater pipe 111, the first wastewater pipe 111 to which the wastewater of the wastewater storage tank 100 is supplied from the upper end portion; A first steam pipe (112) surrounding the first steam and a steam supplier (150) for heating the first waste water pipe (111) by supplying steam as a heating source inside the first steam pipe (112). A heat exchange unit 110; 상기 제1폐수관(111)의 하단부에 결합되어 상기 제1열교환유니트(110)로부터 가열된 폐수가 유입되는 제1침전조(113)와;A first sedimentation tank 113 coupled to a lower end of the first wastewater pipe 111 and into which wastewater heated from the first heat exchange unit 110 flows; 상기 제1침전조(113)의 상부 부분에 발생된 상기 폐수의 수증기가 유입되는 제1보조침전조(114)와;A first auxiliary settling tank (114) into which water vapor of the wastewater generated in an upper portion of the first settling tank (113) flows; 상기 제1침전조(113) 및 제1보조침전조(114)의 하부 부분에 침전된 폐수가 공급되며 상하방향으로 길게 형성된 적어도 하나의 제2폐수관(121)과, 상기 제2폐수관(121)을 감싸며 상기 제1보조침전조(114)로부터의 폐수 수증기가 유입되어 상기 제2폐수관(121)을 가열시키는 제2스팀관(122)을 구비하는 제2열교환유니트(120)와;The at least one second wastewater pipe 121 and the second wastewater pipe 121 are formed to extend in the vertical direction and are supplied with the wastewater precipitated in the lower portions of the first settling tank 113 and the first auxiliary settling tank 114. A second heat exchange unit (120) having a second steam pipe (122) for wrapping the waste water vapor from the first auxiliary settling tank (114) and heating the second waste water pipe (121); 상기 제2폐수관(121)의 하단부에 결합되어 상기 제2열교환유니트(120)로부터 가열된 폐수가 유입되는 제2침전조(123)와;A second sedimentation tank 123 coupled to the lower end of the second waste water pipe 121 and into which the waste water heated from the second heat exchange unit 120 flows; 상기 제2침전조(123)의 상부 부분에 발생된 상기 폐수의 수증기가 유입되는 제2보조침전조(124);를 구비하여서,And a second subsidiary settling tank 124 into which water vapor of the wastewater generated in the upper portion of the second settling tank 123 flows. 상기 제2침전조(123) 및 제2보조침전조(124)의 하부 부분에 침전된 폐수가 상기 농축액저장조(300)으로 이동되고, 상기 제2보조침전조(124)의 상부 부분에 발생된 증기가 상기 응축기(210)를 통하여 응축되어 배출하도록 된 것을 특징으로 하는 폐수처리장치.Wastewater precipitated in the lower portion of the second settling tank 123 and the second auxiliary settling tank 124 is moved to the concentrate storage tank 300, the steam generated in the upper portion of the second auxiliary settling tank 124 is Waste water treatment apparatus characterized in that the condensed through the condenser 210 to be discharged.
KR1020090046977A 2009-05-28 2009-05-28 A Processing Apparatus for Wastewater Treatment KR101125864B1 (en)

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KR20160117674A (en) * 2015-03-30 2016-10-11 한국기계연구원 Submerged burner type wastewater treatment System
KR102445844B1 (en) * 2022-02-04 2022-09-20 노우찬 Wasted water treatment system anf construction method thereof
US11851348B2 (en) 2019-05-28 2023-12-26 Lg Chem, Ltd. Waste water incinerating method and apparatus therefor

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KR101466163B1 (en) * 2013-12-19 2014-11-27 주식회사 새한엔지니어링 Pharmaceutical waste water treatment unit

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JPH1110134A (en) * 1997-06-20 1999-01-19 Fujitsu Ltd Waste liquid treating apparatus and waste liquid treating method
KR100777420B1 (en) * 2006-07-14 2007-11-29 이앤에스 주식회사 Apparatus and method for multi separating pollutants in mixed wastewater

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160117674A (en) * 2015-03-30 2016-10-11 한국기계연구원 Submerged burner type wastewater treatment System
US11851348B2 (en) 2019-05-28 2023-12-26 Lg Chem, Ltd. Waste water incinerating method and apparatus therefor
KR102445844B1 (en) * 2022-02-04 2022-09-20 노우찬 Wasted water treatment system anf construction method thereof

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