KR20030034878A - Waste water treatment plant - Google Patents

Waste water treatment plant Download PDF

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Publication number
KR20030034878A
KR20030034878A KR1020010066672A KR20010066672A KR20030034878A KR 20030034878 A KR20030034878 A KR 20030034878A KR 1020010066672 A KR1020010066672 A KR 1020010066672A KR 20010066672 A KR20010066672 A KR 20010066672A KR 20030034878 A KR20030034878 A KR 20030034878A
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South Korea
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salt
waste liquid
tank
wastewater
combustion chamber
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KR1020010066672A
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Korean (ko)
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KR100416959B1 (en
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김흥열
박충달
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(주)서광플랜트
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Priority to KR10-2001-0066672A priority Critical patent/KR100416959B1/en
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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
    • C02F1/048—Purification of waste water by evaporation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/08—Thickening liquid suspensions by filtration
    • B01D17/10—Thickening liquid suspensions by filtration with stationary filtering elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D91/00—Burners specially adapted for specific applications, not otherwise provided for
    • F23D91/02—Burners specially adapted for specific applications, not otherwise provided for for use in particular heating operations
    • F23D91/04—Burners specially adapted for specific applications, not otherwise provided for for use in particular heating operations for heating liquids, e.g. for vaporising or concentrating

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

Abstract

PURPOSE: A direct heating type wastewater evaporation apparatus is provided, which can remove salt of concentrated wastewater to prevent any coagulation and clogging of the equipment thus enabling continuous operation and the thickened waste sludge is incinerated at combustion chamber for sludge reduction. CONSTITUTION: In a direct heating type wastewater evaporation apparatus including a thickening tank(10) for receiving pre-treated wastewater, a combustion chamber(20) installed at the top of the thickening tank(10) and equipped with a burner(22), a hot blast guide(24) for guiding flame or hot blast of the burner(22) to the inside of the thickening tank(10), an air discharge line(40) and a waste liquid discharge line(50), the apparatus comprises a salt separation tank(60) installed at the rear of the discharge pipe(50) for precipitating separated salt in wastewater; a storage tank(70) installed at the rear of the salt separation tank(60) for collecting salt separated waste liquid; a filtering equipment(80) for recovering salt from waste liquid discharged from the salt separation tank(60) and containing plenty of salt; a return pipe(72) for returning salt separated waste liquid from the storage tank(70) to the combustion chamber(20) to incinerate the liquid by spraying in the combustion chamber(20).

Description

직가열식 폐수증발농축 처리장치 {Waste water treatment plant}Direct heating wastewater evaporation concentration treatment device {Waste water treatment plant}

본 발명은 직가열식 폐수증발농축 처리장치에 대한 것으로서, 좀 더 상세히는 폐수의 농축 생성물에 의한 장치의 폐색을 방지하고 별도의 후처리비용을 절감할 수 있는 새로운 구조의 직가열식 폐수증발농축 처리장치에 대한 것이다.The present invention relates to a direct heating wastewater evaporation concentration treatment apparatus, and more particularly, a direct heating wastewater evaporation concentration treatment apparatus having a new structure which can prevent the blockage of the apparatus by the concentrated product of the wastewater and reduce the separate post-treatment cost. It is about.

염색공장이나 도금공장 기타 각종 폐수배출업소에서 배출되는 다량의 중금속 등을 함유하는 폐수의 처리방법으로서, 폐수를 농축시켜서 수증기는 증발 제거하고, 농축된 중금속 등의 생성물을 소각 또는 매립하는 방법이 알려져 있다. 이러한 폐수의 증발농축처리방법과 관련하여, 농축조에 저류된 폐수에 직접 버너의 화염을 쏘아서 폐수를 가열 증발시키는 직가열식 폐수증발농축장치가 국내특허등록제246080호로 제안되어 있다. 이러한 직가열식 폐수증발농축장치는, 버너의 화염이나 열풍을 직접 폐수 속으로 유입시킴으로써, 에너지효율이 높고, 보일러를 사용하는 간접가열방식에서 초래되는 보일러의 부식이나 스케일발생 등의 문제점이 없기 때문에 처리효율이 양호한 것으로 알려져 있다.As a method for treating wastewater containing a large amount of heavy metals discharged from a dyeing plant, plating plant, and various wastewater dischargers, a method of concentrating wastewater, evaporating and removing water vapor, and incineration or landfill of products such as concentrated heavy metals are known. have. In connection with such a method of evaporation and concentration of wastewater, a direct heating wastewater evaporation and concentrating device for directly heating and evaporating wastewater by firing a flame of a burner directly on the wastewater stored in a concentration tank has been proposed as a Korean Patent Registration No. The direct heating wastewater evaporation concentrator has high energy efficiency by directly injecting the flame or hot air of the burner into the wastewater, thereby eliminating problems such as corrosion and scale generation of the boiler caused by indirect heating using the boiler. It is known that the efficiency is good.

그런데, 이러한 직가열식 폐수농축장치에서, 폐수를 고농도로 농축시키는 경우에, 폐수의 중금속 성분 등이 반응하여 생성되는 염이 응집되게 된다. 이러한 염은 소각되지 않으며, 농축조의 내벽이나 관로 또는 필터 등이 막혀서 배출이 곤란해지는 문제점이 있었다. 그리고, 종래의 직가열식 폐수농축장치에서 배출되는 다량의 농축생성물을 수집하여 이를 매립하는 경우에는 2차적인 오염을 유발할 수 있고, 이를 소각처리하기 위해서는 별도의 소각설비가 필요하거나 에너지를 소비해야 하는 문제점이 있다.By the way, in such a direct heating wastewater concentrating device, when the wastewater is concentrated at a high concentration, salts generated by the reaction of heavy metal components of the wastewater and the like are aggregated. These salts are not incinerated, and there is a problem in that the discharge is difficult because the inner wall of the concentration tank, the pipeline or the filter is blocked. In addition, when a large amount of concentrated product discharged from the conventional direct heating wastewater concentrator is collected and landfilled, secondary pollution may be caused, and a separate incineration facility is required or energy must be consumed to incinerate it. There is a problem.

본 발명은 전술한 바와 같은 종래의 직가열식 폐수 증발농축장치의 문제점에 착안하여 제안된 것으로서, 본 발명은 직가열 방식에 의해 증발농축된 고농도 폐액의 장치 내의 부착이나 관로의 막힘을 방지하여 원활한 처리를 가능케 하고, 농축된 폐액성분 중의 가연성물질을 재차 농축조 내에서 재차 소각시킴으로써, 최종 배출물의 양을 줄이고, 농축생성물을 소각 에너지원으로 활용할 수 있는 새로운 구조의 직가열식 폐수 증발농축처리장치를 제공하고자 하는 것이다.The present invention has been proposed in view of the problems of the conventional direct heating wastewater evaporation concentrator as described above, the present invention is a smooth treatment by preventing the blockage of the condensation or pipe in the apparatus of the high concentration waste liquid evaporated and concentrated by the direct heating method By incineration of the flammable substances in the concentrated waste liquid in the concentration tank again, to reduce the amount of the final emissions, to provide a new structure of the direct heating wastewater evaporation concentration treatment system that can utilize the concentrated product as an incineration energy source. It is.

도 1은 본 발명의 실시예의 구성도1 is a block diagram of an embodiment of the present invention

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

10. 농축조 20. 연소실10. Thickener 20. Combustion chamber

22. 버너 24. 열풍가이드22. Burner 24. Hot air guide

40. 배기관 50. 배출관40. Exhaust Pipe 50. Exhaust Pipe

60. 염분리조 70. 저장조60. Salt Separation Tank 70. Storage Tank

72. 복귀관72. Return tube

본 발명에 따르면, 원폐수 또는 전처리된 폐수가 유입되는 농축조(10)와, 이 농축조(10)의 상부에 설치되며 버너(22)가 구비된 연소실(20)과, 상기 연소실(20)과 상기 농축조(10) 사이에 설치되며 버너(22)의 화염이나 열풍을 농축조(10) 내로 유도하는 열풍가이드(24)와, 상기 농축조(10)에서 증발된 수증기를 배출하는 배기관(40)과, 상기 농축조(10)에서 농축된 폐액을 배출하는 배출관(50)을 포함하는 폐수농축장치에 있어서, 상기 배출관(50)의 후단에는 폐액에 생성 또는 함유된 염을 석출분리하는 염분리조(60)와, 상기 염분리조(60)의 후단에 설치되며 염이 분리된폐액을 수집하는 저장조(70)와, 상기 염분리조(60)에서 배출된 다량의 염이 함유된 폐액에서 염을 회수하는 필터장치(80)와, 염분리된 폐액을 상기 저장조(70)로부터 상기 연소실(20)로 이송하는 복귀관(72)을 포함하여 구성되며, 염분리된 폐액을 상기 저장조(70)에서 연소실(20)로 복귀시켜서 분사시킴으로써 소각되도록 된 것을 특징으로 하는 직가열식 폐수 증발농축장치가 제공된다.According to the present invention, a concentration tank 10 into which raw waste water or pretreated wastewater flows, a combustion chamber 20 installed above the concentration tank 10 and equipped with a burner 22, the combustion chamber 20 and the It is installed between the concentration tank 10 and the hot air guide 24 to guide the flame or hot air of the burner 22 into the concentration tank 10, and the exhaust pipe 40 for discharging the water vapor evaporated from the concentration tank 10, and In the wastewater concentrating device comprising a discharge pipe (50) for discharging the waste liquid concentrated in the concentration tank (10), the rear end of the discharge pipe (50) and a salt separation tank (60) for depositing and separating the salt generated or contained in the waste liquid, A filter device (80) installed at the rear end of the salt separation tank (60) and collecting the waste liquid from which the salt is separated, and a salt collection unit (80) for recovering salt from the waste liquid containing a large amount of salt discharged from the salt separation tank (60). ) And a return pipe 72 for transferring the salt separated waste liquid from the reservoir 70 to the combustion chamber 20. And comprising, a straight-heated waste water evaporation system, it characterized in that the incineration to thereby return to the combustion chamber by 20 ejecting the salt separated in the waste liquid reservoir 70 is provided.

이하에서 도면을 참조하여 본 발명의 바람직한 실시예를 설명한다. 도 1은 본 발명의 실시예의 개략 구성도로서, 도시된 바와 같이, 원폐수 또는 전처리된 폐수가 폐수저장조(12) 또는 중화조로부터 농축조(10)로 유입된다. 농축조(10)의 상부에 버너(22)가 구비된 연소실(20)이 형성된다. 상기 연소실(20)과 농축조(10) 사이에는 수직의 열풍가이드(24)가 구비되어, 연소실(20)에서 발생되는 화염이나 열풍을 직접 농축조(10)에 저류된 폐수 속으로 유입시킨다. 그러면, 폐수가 버너의 화염 또는 열풍에 의해 직접 가열됨으로써 효과적으로 농축된다.Hereinafter, with reference to the drawings will be described a preferred embodiment of the present invention. 1 is a schematic configuration diagram of an embodiment of the present invention, as shown, raw wastewater or pretreated wastewater is introduced into the concentration tank 10 from the wastewater storage tank 12 or the neutralization tank. The combustion chamber 20 provided with the burner 22 is formed in the upper part of the concentration tank 10. A vertical hot air guide 24 is provided between the combustion chamber 20 and the concentration tank 10 to directly introduce flames or hot air generated in the combustion chamber 20 into the wastewater stored in the concentration tank 10. The waste water is then effectively concentrated by direct heating by the flame or hot air of the burner.

농축조(10)의 상부 일측에는 배기관(40)이 구비되어 폐수의 가열에 의해 발생되는 수증기나 재를 포함하는 배출가스를 배출한다. 이 배기관(40)에는 데미스터(42)와 스크러버(43)가 접속되어 배기가스에 포함된 재나 기타 이물질을 제거하고, 팬(44)을 통해 탈취장치(45)로 유입시켜서 냄새를 제거한 후에 연도(47)를 통해 수증기가 주성분인 무해한 배기가스를 배출한다. 그리고, 농축조(10)에서 농축된 폐액은 점도가 높고, 반응에 의해 염을 생성하게 된다.An exhaust pipe 40 is provided at an upper side of the concentration tank 10 to discharge the exhaust gas containing the steam or ash generated by heating the waste water. The exhaust pipe 40 is connected to the demister 42 and the scrubber 43 to remove ash and other foreign matter contained in the exhaust gas, and introduced into the deodorizing device 45 through the fan 44 to remove the odor after the flue Through (47), water vapor emits harmless exhaust gas, which is a main component. In addition, the waste liquid concentrated in the concentration tank 10 has a high viscosity and generates salt by the reaction.

농축조(10)의 하부에 저류된 염성분이 다량 함유된 고농도 폐액은 그 하단의이송펌프(11)에 의해 배출관(50)을 통해 염분리조(60)로 유입된다. 염분리조(60)에서 염을 석출시킴으로써, 폐액의 응집이나 이들의 부착으로 인한 관로 등의 폐색을 방지할 수 있다. 염분리조(60)의 후단에는 염분이 석출된 폐액이 저장되는 저장조(70)가 구비된다. 그리고, 염분리조(60)에 석출된 염은 그 하단의 이송관(61)을 통해 필터프레스와 같은 필터장치(80)로 이송되어 염을 회수하고, 탈수되어 나온 폐액성분은 저장조(70)로 유입된다.High concentration waste liquid containing a large amount of salt components stored in the lower portion of the concentration tank 10 is introduced into the salt separation tank 60 through the discharge pipe 50 by the transfer pump 11 at the bottom thereof. By depositing the salt in the salt separation tank 60, it is possible to prevent the blockage of the conduit and the like due to the aggregation of the waste liquid and the adhesion thereof. The rear end of the salt separation tank 60 is provided with a storage tank 70 in which waste liquid from which salt is deposited is stored. Then, the salt precipitated in the salt separation tank 60 is transferred to a filter device such as a filter press through a transfer pipe 61 at the bottom thereof to recover the salt, and the dehydrated waste component is stored in the storage tank 70. Inflow.

저장조(70)에 저장된 염성분이 제거된 고농도 폐액은 다시 펌프(71)와 복귀관(72)을 통해 연소실(20)로 공급되어 분사노즐(26)에 의해 분사된다. 분사노즐(24)에서 분사된 폐액성분에 포함된 가연성 물질은 재차 버너(22)에 의해 연소되어, 열원으로 기능하면서 소각처리된다.The high concentration waste liquid from which the salt component stored in the storage tank 70 is removed is supplied to the combustion chamber 20 through the pump 71 and the return pipe 72 and sprayed by the injection nozzle 26. The combustible material contained in the waste liquid component injected from the injection nozzle 24 is burned by the burner 22 again and incinerated while functioning as a heat source.

번호 63은 농축조의 폐액을 순환시킴으로써 폐액성분이 열풍에 노출되도록 하여 소각시키기 위한 순환관이고, 번호 64는 보온 자켓으로서, 공급관(65)을 통해 가열된 폐수를 공급시켜서 농축조의 외벽의 냉각으로 인한 농축작용의 저하를 방지하기 위한 것이다.No. 63 is a circulation pipe for incineration by circulating the waste liquid of the concentration tank so that the waste liquid is exposed to hot air, and No. 64 is a heat insulation jacket, which supplies heated wastewater through the supply pipe 65, resulting in cooling of the outer wall of the concentration tank. It is for preventing the fall of concentration.

이상에서 설명한 본 발명에 따르면, 종래의 직가열식 폐수농축장치에서, 농축된 폐수에서 염분을 분리 제거함으로써, 염분에 의한 응집현상이나 이로 인한 장치의 폐색을 방지함으로써, 장치의 연속적인 가동이 가능하게 되고, 농축된 폐액 슬러지를 재차 연소실로 복귀시켜서 소각처리함으로써, 농축된 폐액을 그대로 배출하여 매립이나 소각하는데에 따른 비용이나 2차오염의 피해를 줄일 수 있다.According to the present invention described above, in the conventional direct heating wastewater concentrating device, by separating and removing the salt from the concentrated wastewater, by preventing the flocculation phenomenon due to the salt or blockage of the device thereby, it is possible to continuously operate the device In addition, by returning the concentrated waste liquid sludge back to the combustion chamber for incineration, the concentrated waste liquid can be discharged as it is to reduce the cost or secondary pollution caused by landfilling or incineration.

Claims (1)

원폐수 또는 전처리된 폐수가 유입되는 농축조(10)와, 이 농축조(10)의 상부에 설치되며 버너(22)가 구비된 연소실(20)과, 상기 연소실(20)과 상기 농축조(10) 사이에 설치되며 버너(22)의 화염이나 열풍을 농축조(10) 내로 유도하는 열풍가이드(24)와, 상기 농축조(10)에서 증발된 수증기를 배출하는 배기관(40)과, 상기 농축조(10)에서 농축된 폐액을 배출하는 배출관(50)을 포함하는 폐수농축장치에 있어서, 상기 배출관(50)의 후단에는 폐액에 생성 또는 함유된 염을 석출분리하는 염분리조(60)와, 상기 염분리조(60)의 후단에 설치되며 염이 분리된 폐액을 수집하는 저장조(70)와, 상기 염분리조(60)에서 배출된 다량의 염이 함유된 폐액에서 염을 회수하는 필터장치(80)와, 염분리된 폐액을 상기 저장조(70)로부터 상기 연소실(20)로 이송하는 복귀관(72)을 포함하여 구성되며, 염분리된 폐액을 상기 저장조(70)에서 연소실(20)로 복귀시켜서 분사시킴으로써 소각되도록 된 것을 특징으로 하는 직가열식 폐수 증발농축장치.A concentration tank 10 into which raw waste water or pretreated wastewater flows, a combustion chamber 20 installed above the concentration tank 10 and equipped with a burner 22, between the combustion chamber 20 and the concentration tank 10; Installed in the hot air guide 24 to guide the flame or hot air of the burner 22 into the concentration tank 10, the exhaust pipe 40 for discharging the water vapor evaporated from the concentration tank 10, and in the concentration tank (10) In the wastewater concentrating device comprising a discharge pipe (50) for discharging the concentrated waste liquid, a salt separation tank (60) for depositing and separating the salt generated or contained in the waste liquid at the rear end of the discharge pipe 50, and the salt separation tank (60) And a reservoir (70) for collecting the waste liquid from which salt is separated, a filter device (80) for recovering salt from the waste liquid containing a large amount of salt discharged from the salt separation tank (60), and salt separation. And a return pipe 72 for transferring the waste liquid from the reservoir 70 to the combustion chamber 20. And, the direct heating wastewater evaporation and concentrating device, characterized in that to be incinerated by spraying the salt separated waste liquid returned to the combustion chamber (20) in the reservoir (70).
KR10-2001-0066672A 2001-10-29 2001-10-29 Waste water treatment plant KR100416959B1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
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KR20030084134A (en) * 2002-04-25 2003-11-01 권익 Evaporation concentrator of direct heating type
KR200453620Y1 (en) * 2010-04-16 2011-05-16 권효민 Functional bedding parts and bedding mattress using the same
KR20160117674A (en) * 2015-03-30 2016-10-11 한국기계연구원 Submerged burner type wastewater treatment System
KR20210013441A (en) * 2019-07-25 2021-02-04 (주)진합 Low temperature evaporated wastewater drying system using Drum shape dryer
CN113357651A (en) * 2021-06-22 2021-09-07 瑞昌荣联环保科技有限公司 Waste water treatment process generated in waste acrylic regeneration and recovery process

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JPS55104685A (en) * 1979-02-05 1980-08-11 Chugoku Kogyo Kk Method of treatment for night soil
JPH07275894A (en) * 1994-04-07 1995-10-24 Yoshio Gomi Wastewater treatment
KR970061785A (en) * 1996-02-29 1997-09-12 김성남 Waste liquid treatment device
KR100246080B1 (en) * 1998-01-22 2000-03-15 설옥덕 A direct-heating waste water condensing system
KR200163285Y1 (en) * 1999-07-02 2000-02-15 전용봉 Waste water evaporation concentration plant

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030084134A (en) * 2002-04-25 2003-11-01 권익 Evaporation concentrator of direct heating type
KR200453620Y1 (en) * 2010-04-16 2011-05-16 권효민 Functional bedding parts and bedding mattress using the same
KR20160117674A (en) * 2015-03-30 2016-10-11 한국기계연구원 Submerged burner type wastewater treatment System
KR20210013441A (en) * 2019-07-25 2021-02-04 (주)진합 Low temperature evaporated wastewater drying system using Drum shape dryer
CN113357651A (en) * 2021-06-22 2021-09-07 瑞昌荣联环保科技有限公司 Waste water treatment process generated in waste acrylic regeneration and recovery process

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