KR19990003208A - Sludge Flotation Wastewater Treatment Method - Google Patents
Sludge Flotation Wastewater Treatment Method Download PDFInfo
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- KR19990003208A KR19990003208A KR1019970027032A KR19970027032A KR19990003208A KR 19990003208 A KR19990003208 A KR 19990003208A KR 1019970027032 A KR1019970027032 A KR 1019970027032A KR 19970027032 A KR19970027032 A KR 19970027032A KR 19990003208 A KR19990003208 A KR 19990003208A
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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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F21/00—Dissolving
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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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
- C02F11/00—Treatment of sludge; Devices therefor
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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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/04—Surfactants, used as part of a formulation or alone
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Water Treatments (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
본 발명의 목적은 폐수중에 응집성 및 부상성 약품을 혼합시켜 슬러지로 응집시킨 다음 자연적으로 크게 응집된 슬러지가 폐수의 수면위로 부상하여 부상상태를 지속적으로 유지토록 하므로써 슬러지의 제거효율을 극대화한 슬러지 부상 방식의 폐수처리방법을 제공하는데 있다.An object of the present invention is to mix the cohesive and flocculating chemicals in the waste water and to aggregate the sludge, and then the sludge flotation which maximizes the sludge removal efficiency by maintaining the state of injury by continuously flocculating the sludge which is naturally largely flocculated on the surface of the waste water. It is to provide a wastewater treatment method.
상기한 목적을 달성하기 위하여 본 발명은 폐수를 집수조에 모은 후 이송하는 공정과;In order to achieve the above object, the present invention comprises the steps of transporting after collecting the waste water in the sump;
물과 물에 대하여 15∼25%(체적비)의 1차 무기 응집제와 물에 대하여 0.005∼0.4%(체적비)의 계면활성제를 용해 혼합하여 만든 1차처리용액을 상기 폐수와 혼합하는 공정과;Mixing a primary treatment solution prepared by dissolving and mixing 15-25% (volume ratio) of the primary inorganic coagulant with water and 0.005% by volume (volume ratio) with respect to water and the wastewater;
상기 폐수와 1차처리용액을 혼합한 것을 나선형으로 선회하면서 이송시킬 때 발생되는 와류에 의해 교반시키는 제1교반 공정과;A first stirring step of stirring by the vortex generated when the mixed mixture of the wastewater and the primary treatment solution is transferred while spirally rotating;
상기 제1교반 공정을 통하여 교반된 1차교반액에 물과, 물에 대한 체적비로 0.005∼0.5%의 2차 고분자 응집제를 용해 혼합하여 만든 2차처리용액을 혼합하는 공정과;Mixing a secondary treatment solution prepared by dissolving and mixing water and a secondary polymer coagulant having a volume ratio of 0.005 to 0.5% in a stirred primary stirring solution through the first stirring process;
상기 공정단계에서의 혼합된 폐수용액을 노즐을 통해 슬러지 부상탱크내에 분사하는 공정과;Spraying the mixed wastewater solution in the process step into the sludge flotation tank through a nozzle;
상기 부상탱크의 수면위로 부상되어 응집된 폐수슬러지를 거두어내는 공정과; 를 포함하여 구성되는 것을 특징으로 한다.Removing the flocculated wastewater sludge by floating on the surface of the flotation tank; Characterized in that comprises a.
Description
본 발명은 폐수중의 유해물을 응집시켜 슬러지로 부상시키므로써 처리효율을 높인 슬러지 부상 방식의 폐수처리방법에 관한 것이다.The present invention relates to a wastewater treatment method of the sludge flotation method by aggregating harmful substances in the wastewater to rise to sludge to increase the treatment efficiency.
일반적으로 폐수의 정화처리는 복수의 탱크를 마련하고 폐수가 각 탱크를 통과하면서 폭기 및 침전 처리를 하게되는 슬러지 침전방식이 많이 사용되고 있다.In general, the sludge sedimentation method in which a plurality of tanks are provided and waste water passes through each tank to perform aeration and sedimentation is widely used.
그러나 이와같이 반복적인 폐수의 폭기 및 침전 처리방식은 폐수를 정화하는데 많은 시간(보통 2∼3일 소요)이 소요되고 장치를 설치하는데 소요되는 면적이 커서 처리비용이 많이 들고 비효율적이라는 문제점이 있다.However, the repeated aeration and sedimentation treatment method of the wastewater takes a long time (usually 2-3 days) to purify the wastewater and the large area required to install the device is a large treatment cost and inefficient.
최근에 많이 사용되고 있는 또다른 방법으로는 폐수중의 유해물을 슬러지로 응집시켜 수면위로 부상시키므로써 부상된 슬러지를 손쉽게 긁어내는 방법이 있는 바 이는 슬러지를 순간 부상시키기 위해서 가압부상탱크를 사용하여 탱크내에 고압을 가하여 슬러지를 부상시키게 된다.Another widely used method is the method of easily scraping the injured sludge by flocculating harmful substances in the wastewater into sludge and floating it on the water surface. Sludge is floated by applying high pressure.
그러나 가압부상 방식은 별도의 밀폐된 가압탱크를 설치하여야 하며 컴프레셔로 압력을 가하여 가압과 감압을 조정하고 있기 때문에 응집된 슬러지의 순간 부상 효율이 떨어지며 때때로 슬러지가 탱크내에서 단일층을 형성하지 못하고 각기 분리된 몇 개의 층을 이루거나 순간 부상이 되더라도 시간이 경과될수록 슬러지가 침하되어 버려서 부상효과가 지속적이지 못하므로 처리효율이 크게 떨어지게 되는 문제점이 있게 된다.However, the pressure flotation method requires the installation of a separate sealed pressurized tank, and the pressure and pressure are adjusted by applying a pressure with a compressor, which reduces the instantaneous flotation efficiency of the agglomerated sludge and sometimes the sludge does not form a single layer in the tank. Even if a few layers are separated or a momentary injury, the sludge is settled as time passes, so that the floating effect is not sustained, so that there is a problem that the treatment efficiency is greatly reduced.
이에 본 발명은 상기한 문제점을 해결하기 위하여 제안된 것으로서 그의 목적으로 하는 것은 폐수중에 응집성 및 부상성 약품을 혼합시켜 슬러지로 응집시킨 다음 자연적으로 크게 응집된 슬러지가 폐수의 수면위로 부상하여 부상상태를 지속적으로 유지토록 하므로써 슬러지의 제거효율을 극대화한 슬러지 부상 방식의 폐수처리방법을 제공하는데 있다.Therefore, the present invention has been proposed to solve the above problems, and its purpose is to mix cohesive and flocculating chemicals in the wastewater to agglomerate with sludge, and then naturally agglomerated sludge floats on the surface of the wastewater to recover the injured state. It is to provide a sludge flotation wastewater treatment method that maximizes sludge removal efficiency by maintaining it continuously.
상기한 목적을 달성하기 위하여 본 발명은The present invention to achieve the above object
폐수를 집수조에 모은 후 이송하는 공정과;Collecting and transporting the wastewater into a sump tank;
물과 물에 대하여 15∼25%(체적비)의 1차 무기 응집제와 물에 대하여 0.005∼0.4%(체적비)의 계면활성제를 용해 혼합하여 만든 1차처리용액을 상기 폐수와 혼합하는 공정과;Mixing a primary treatment solution prepared by dissolving and mixing 15-25% (volume ratio) of the primary inorganic coagulant with water and 0.005% by volume (volume ratio) with respect to water and the wastewater;
상기 폐수와 1차처리용액을 혼합한 것을 나선형으로 선회하면서 이송시킬 때 발생되는 와류에 의해 교반시키는 제1교반 공정과;A first stirring step of stirring by the vortex generated when the mixed mixture of the wastewater and the primary treatment solution is transferred while spirally rotating;
상기 제1교반 공정을 통하여 교반된 1차교반액에 물과, 물에 대한 체적비로 0.005∼0.5%의 2차 고분자 응집제를 용해 혼합하여 만든 2차처리용액을 혼합하는 공정과;Mixing a secondary treatment solution prepared by dissolving and mixing water and a secondary polymer coagulant having a volume ratio of 0.005 to 0.5% in a stirred primary stirring solution through the first stirring process;
상기 공정단계에서의 혼합된 폐수용액을 노즐을 통해 슬러지 부상탱크내에 분사하는 공정과;Spraying the mixed wastewater solution in the process step into the sludge flotation tank through a nozzle;
상기 부상탱크의 수면위로 부상되어 응집된 폐수슬러지를 거두어내는 공정과; 를 포함하여 구성되는 것을 특징으로 한다.Removing the flocculated wastewater sludge by floating on the surface of the flotation tank; Characterized in that comprises a.
그리고 본 발명의 청구항 2의 기재에 의하면 상기 1차교반액과 2차처리용액을 혼합한 후 나선형으로 선회하면서 이송시켜 교반하는 제2교반 공정을 거치게 된다.According to the description of claim 2 of the present invention, the first stirring solution and the second treatment solution are mixed, followed by a second stirring step of transferring and stirring while rotating spirally.
도 1은 본 발명에 의한 폐수처리방법을 시행하기 위한 폐수처리장치의 전체 구성도1 is an overall configuration of the wastewater treatment apparatus for implementing the wastewater treatment method according to the present invention
도 2는 본 발명의 교반장치를 나타내는 측단면도Figure 2 is a side cross-sectional view showing a stirring device of the present invention
도 3은 본 발명의 분사공정을 수행하기 위한 분사장치를 나타내는 도면3 is a view showing an injection device for performing the injection process of the present invention
도 4는 1차 무기 응집제와 반응하여 폐수속에 슬러지가 입자로 분산되어 있 는 폐수상태를 나타내는 도면4 is a view showing a wastewater state in which sludge is dispersed as particles in the wastewater in reaction with the primary inorganic flocculant
도 5는 계면활성제에 의해 생성된 기포주위에 슬러지입자(Floc)가 달라붙어 있는 폐수상태를 나타내는 도면FIG. 5 is a view showing a wastewater state in which sludge particles (Floc) are stuck around bubbles generated by a surfactant.
도 6은 2차 고분자 응집제와 교반후 분사되어 슬러지 입자들이 달라붙은 기 포가 거대한 덩어리로 응집되어 수면위로 부상되어 있는 폐수상태를 나타내는 도면FIG. 6 is a view showing a wastewater state in which a bubble in which sludge particles are stuck after being injected after stirring with a secondary polymer flocculant is agglomerated into a large mass and floated on the surface of the water
※ 도면의 주요부분에 대한 부호의 설명※ Explanation of code for main part of drawing
1 : 집수조 2 : 펌프1: water tank 2: pump
3 : 이송관 4 : 제1교반장치3: transfer pipe 4: first stirring device
5 : 1차처리용액 공급장치 6 : 약품교반탱크5: primary treatment solution supply device 6: chemical stirring tank
10 : 약품용기 17 : 이송관10: chemical container 17: transfer pipe
18 : 제2교반장치 19 : 2차처리용액 공급장치18: second stirring device 19: secondary treatment solution supply device
30 : 노즐 31 : 슬러지 부상탱크30: nozzle 31: sludge flotation tank
이하 본 발명의 실시예를 첨부한 도면을 참조하여 설명한다.Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
도 1은 본 발명에 의한 폐수처리방법을 시행하기 위한 폐수처리장치를 나타내는 도면이다.1 is a view showing a wastewater treatment apparatus for implementing the wastewater treatment method according to the present invention.
도면에 있어서 부호 1로 나타내는 집수조에는 정화처리되어야 할 폐수가 수집되어 저장된다.Waste water to be purified is collected and stored in a water tank indicated by reference numeral 1 in the drawings.
집수조(1)에 저장된 폐수는 펌프(2) 구동에 의하여 이송관(3)을 통하여 제1교반장치(4)로 이송되며 펌프(2)는 폐수용액을 흡입하여 토출하는 동안 외부로부터 공기를 혼입시켜 폭기시킬 수 있는 기능을 갖고 있는 것이 바람직하다.Waste water stored in the collection tank 1 is transferred to the first stirrer 4 through the transfer pipe 3 by driving the pump 2, and the pump 2 mixes air from the outside while sucking and discharging the waste water solution. It is preferable to have a function which can make aeration.
상기 펌프(2)와 제1교반장치(4) 사이의 이송관(3)에는 1차처리용액 공급장치(5)가 접속되어 있으며 1차처리용액 공급장치(5)는 약품교반탱크(6)와 중간저장탱크(7) 및 공급저장조(8) 등으로 구성되고 약품교반탱크(6)에는 물공급관(9)을 통해 공급된 물과 약품용기(10)로 부터 공급된 1차 무기 응집제와 계면활성제를 일정량으로 혼합하여 교반기(11)를 회전시켜 교반시키게 된다.The primary processing solution supply device 5 is connected to the transfer pipe 3 between the pump 2 and the first stirring device 4, and the primary processing solution supply device 5 is a chemical stirring tank 6. And an intermediate storage tank (7) and a supply storage tank (8), and the chemical stirring tank (6) interfaces with the water supplied through the water supply pipe (9) and the primary inorganic coagulant supplied from the chemical container (10). The activator is mixed in a predetermined amount to rotate the stirrer 11 to stir.
이때 공급되는 물에 대한 체적비로 15∼25%의 1차 무기 응집제와 물에 대하여 0.005∼0.4%(체적비)의 계면활성제를 혼합하여 1차처리용액을 만들게 되며 교반된 1차처리용액은 밸브(12)의 개방시 중간저장탱크(7)내에 저장되어진 후 정량펌프(13) 가동에 의해 다시 공급저장조(8)에 저장되며 다시 정량펌프(14)에 의해 접속관(15)을 통해 이송관(3)내로 정량공급되어 폐수와 혼합되어지게 된다.At this time, 15 to 25% of primary inorganic flocculant and 0.005 to 0.4% (volume ratio) of surfactant are mixed with water to make the primary treatment solution. The stirred primary treatment solution is a valve ( 12 is stored in the intermediate storage tank (7) and then stored in the supply storage tank (8) again by the operation of the metering pump (13) and the transfer pipe (15) through the connecting pipe (15) by the metering pump (14) 3) It is quantitatively supplied and mixed with the wastewater.
1차처리용액과 혼합된 폐수는 파이프를 코일스프링과 같이 나선형으로 감아 형성한 제1교반장치(4)를 나선형으로 선회하면서 이송되어지게 된다.Wastewater mixed with the primary treatment solution is conveyed while spirally rotating the first stirrer 4 formed by spirally winding the pipe like a coil spring.
펌프(2)에 의해 폐수를 연속적으로 이송안내하는 제1교반장치(4)를 나선형 파이프로 형성한 이유는 폐수가 이송되는 동안 1차처리용액과 고르게 혼합 및 교반되도록 하기 위한 것으로 폐수가 와류를 형성하게 되므로 교반효율이 크게 향상되며 또한 장치의 전체길이를 작게 유지하는 것이 가능하게 된다.The reason why the first stirring device 4 for continuously conveying the wastewater by the pump 2 is formed as a spiral pipe is to allow the wastewater to mix and stir evenly with the primary treatment solution while the wastewater is being transferred. Since it is formed, the stirring efficiency is greatly improved and it is possible to keep the overall length of the device small.
상기 제1교반장치(4)의 파이프 내벽에는 복수개의 돌기(16)를 형성시켜 폐수가 나선형으로 선회하면서 이송되는 동안 유동을 교란시켜 텀블(Tumble) 현상을 극대화시키게 된다.A plurality of protrusions 16 are formed on the inner wall of the pipe of the first stirrer 4 to maximize the tumble phenomenon by disturbing the flow while the waste water is spirally transported.
제1교반장치(4)를 통하여 제1교반공정이 이루어진 폐수의 1차교반액은 이송관(17)으로 연결된 제2교반장치(18)로 급송되며 이송관(17)을 통과하는 동안 2차처리용액과 혼합되어지게 된다.The first stirring liquid of the wastewater in which the first stirring process is performed through the first stirring device 4 is fed to the second stirring device 18 connected to the conveying pipe 17 and subjected to the secondary treatment while passing through the conveying pipe 17. It is mixed with the solution.
2차처리용액은 2차처리용액 공급장치(9)를 통하여 만들어져 공급되며 2차처리용액 공급장치(19)의 시스템 구성은 1차처리용액 공급장치(5)와 동일하다.The secondary treatment solution is made and supplied through the secondary treatment solution supply device 9 and the system configuration of the secondary treatment solution supply device 19 is the same as that of the primary treatment solution supply device 5.
즉 2차처리용액 공급장치(19)는 약품교반탱크(20)와 중간저장탱크(21), 공급저장조(22) 등으로 구성되고 약품교반탱크(20)에는 물공급관(23)을 통해 공급된 물과, 용기로부터 공급된 2차 고분자 응집제를 체적비로 0.005∼0.5%의 비율로 섞어 교반기(24)를 회전시켜 고르게 교반한 2차처리용액을 얻게되며 2차처리용액은 밸브(25)를 통하여 중간저장탱크(21)에 저장된 후 정량펌프(26) 가동에 의해 공급저장조(22)에 저장되며 다시 정량펌프(27) 가동에 의해 접속관(28)을 통해 이송관(17)내로 공급되어 폐수(1차처리용액과 교반된 폐수)와 혼합되어지게 된다.That is, the secondary treatment solution supply device 19 is composed of a chemical stirring tank 20, an intermediate storage tank 21, a supply storage tank 22, and the chemical stirring tank 20 supplied through a water supply pipe 23. Water and the secondary polymer flocculant supplied from the container are mixed at a ratio of 0.005 to 0.5% by volume to rotate the stirrer 24 to obtain a uniformly stirred secondary treatment solution. The secondary treatment solution is passed through the valve 25. After being stored in the intermediate storage tank 21 and stored in the supply storage tank 22 by the operation of the metering pump 26 and again supplied to the transfer pipe 17 through the connecting pipe 28 by the metering pump 27 is operated waste water (Primary treatment solution and stirred wastewater).
이와같이 하여 1차 및 2차처리용액과 혼합된 폐수는 제2교반장치(18)를 통하여 앞서와 동일하게 나선형으로 선회하면서 2차교반공정을 거치게 되며 나선형 파이프로 형성된 제2교반장치(18)내에도 유동을 교란시키기 위한 복수개의 돌기가 형성되어 있다.In this way, the wastewater mixed with the primary and secondary treatment solutions is subjected to the secondary stirring process while spirally turning in the same manner as before through the second stirring device 18 and in the second stirring device 18 formed of the spiral pipe. A plurality of protrusions are formed for disturbing the degree flow.
2차교반공정을 거치면서 약품과 균일하게 교반된 폐수는 이송관(29)을 통하여 슬러지 부상탱크(31)내로 들어가게 되며 도중에 이송관(29)에 설치된 노즐(30)을 통과하면서 고속으로 폐수를 분출하게 되며 이때 슬러지가 크게 응집되면서 수면위 상부로 떠오르게 되며 상부에 부상된 슬러지는 슬러지 제거기구(33, 상세 도시생략)를 슬러지 부상탱크(31) 상부에서 왕복운동시켜 외부로 걷어내게 되면 슬러지 부상탱크(31) 하부에는 정화된 폐수만이 남게 된다.Through the second stirring process, the waste water uniformly stirred with the chemical enters the sludge flotation tank 31 through the transfer pipe 29, and passes the waste water at high speed while passing through the nozzle 30 installed in the transfer pipe 29. When the sludge agglomerates greatly, it rises to the upper part of the water surface and the sludge injured in the upper part slids the sludge removal mechanism (33, detailed illustration) from the upper part of the sludge flotation tank 31 to be rolled out. Only the purified waste water remains under the tank 31.
슬러지 부상탱크(31)내의 정화된 폐수가 요구조건을 충족하지 못하였을 경우 필요에 따라 복수개의 부상탱크를 거치거나 이에 더하여 펌프를 통해 별도 여과장치로 보내 2차로 여과할 수 있다.If the purified wastewater in the sludge flotation tank 31 does not meet the requirements, it may be passed through a plurality of flotation tanks as needed, or in addition, it may be filtered through a pump to a second filtering device.
이하에 본 발명의 작용에 대하여 보다 자세히 설명한다.The operation of the present invention will be described in more detail below.
폐수속에 1차 무기 응집제와 전리성 계면활성제가 혼합되면 1차 무기 응집제가 양이온과 음이온으로 전리가 되면서 전리된 이온을 핵으로 하여 폐수속의 이물질과 결합하여 1차 응집상태(Floc, 슬러지 입자상태)가 된다.When the primary inorganic coagulant and the ionizing surfactant are mixed in the waste water, the primary inorganic coagulant is ionized with cations and anions, and the ionized ion is used as the nucleus to combine with the foreign matter in the waste water. Becomes
이때 폐수가 펌프(2)에 의해 급송되는 동안 공기가 자동으로 흡입되고 1차처리용액에 의해 응집된 플록(Floc) 상태의 알갱이들은 입자가 작게 되므로 폐수속에서 무수히 많은 작은 입자로 분포하게 되며 도 4에와 같이 자연침전이 어려우므로 폐수속에 작은 알갱이로 응집된 상태로 떠다니게 된다.At this time, air is automatically sucked while the waste water is pumped by the pump 2, and the floc grains agglomerated by the primary treatment solution are dispersed in the waste water because the particles are small. As in 4e, natural precipitation is difficult, so it floats agglomerated into small grains in the wastewater.
한편 폐수속에는 응집촉매제인 계면활성제가 공기와 같이 섞이게 되어 무수히 많은 기포(32)를 형성(도 6 참조)하게 되며 이 기포(32)주위에 1차로 응집된 플록(33, 슬러지 알갱이)들이 달라붙게 된다.On the other hand, in the waste water, the surfactant, which is a coagulant catalyst, is mixed with air to form a myriad of bubbles 32 (see FIG. 6), and the flocculated aggregates 33 (sludge sludge) that are primarily aggregated around the bubbles 32 are stuck. do.
여기에 2차 고분자 응집제를 투입하여 교반한 후 노즐(30)을 통하여 슬러지 부상탱크(31)내로 폐수를 고속으로 분사하게 되면 플록(33)이 달라붙은 기포(32)들이 순식간에 응집되어 큰 덩어리(34)를 형성(도 6 참조)하면서 부력과 분사압력을 받아 순식간에 수면위로 떠오르게 되는 것이다.When the secondary polymer flocculant is added and stirred, and the wastewater is injected into the sludge flotation tank 31 at high speed through the nozzle 30, the bubbles 32 to which the floc 33 adheres are rapidly agglomerated and become large lumps. While forming (34) (see Fig. 6), it will float on the surface of the water under buoyancy and injection pressure.
여기서 1차 무기 응집제로는 통상 사용되는 황산알미늄(Al2(So4)3), 황산제1철(FeSO4), 황산제2철(Fe(SO4)3), 염화제1철(FeCl), 염화제2철(FeCl2) 등이 사용되며 2차 고분자 응집제로는 아니온(Anion) 및 캐치온 등이 사용된다.Here, the primary inorganic flocculants include aluminum sulfate (Al 2 (So 4 ) 3 ), ferrous sulfate (FeSO 4 ), ferric sulfate (Fe (SO 4 ) 3 ), and ferrous chloride (FeCl). ), Ferric chloride (FeCl 2 ), and the like are used as secondary polymer flocculants such as anion (Anion) and catchon.
상기에서 본 발명의 중요한 특징은 폐수중에 계면활성제를 투입하므로써 계면활성제가 공기와 반응하여 기포(많은 거품)를 형성하고 그 기포주위에 응집된 플록(Floc, 33)들이 달라붙어 부력에 의해 크게 응집된 슬러지가 가라앉지 않고 최상부에 부상된 상태를 지속적으로 유지하게 되므로 슬러지를 극히 용이하게 걷어낼 수 있게 된 점에 있다.In the above, an important feature of the present invention is that the surfactant reacts with air to form bubbles (many bubbles) by introducing a surfactant into the wastewater, and flocs (Floc, 33), which are aggregated around the bubbles, adhere to the particles and are greatly aggregated by buoyancy. The sludge does not sink and maintains the state of being injured at the top, so the sludge can be removed very easily.
이상과 같은 본 발명에 의하면 폐수속에 1차 무기 응집제와 계면활성제 및 2 차 고분자 응집제를 합하여 나선형으로 특별히 고안된 교반장치를 통하여 연속적인 이송중에 고르게 교반한 후 슬러지 부상탱크내에 고속(고압)으로 분사하므로써 계면활성제에 의해 생성된 기포(거품) 주변에 응집된 작은 알갱이의 플록들이 달라붙어 뭉치게되어 거대한 덩어리를 형성하면서 순식간에 수면위로 떠올라 흩어지지 않고 지속적으로 부상상태를 유지하게 되므로써 일정량의 슬러지층이 형성될 때마다 슬러지층의 제거가 가능하여 작업효율을 크게 향상시키고 슬러지 응집효과가 커서 폐수정화 효율을 크게 높이게 된다.According to the present invention as described above, by mixing the primary inorganic flocculant, the surfactant and the secondary polymer flocculant in the waste water, by stirring at a high speed (high pressure) in the sludge flotation tank after stirring evenly during continuous transfer through a specially designed stirring device spirally Small particles of floc aggregated around the bubbles (bubbles) generated by the surfactant cling together to form a large mass, which floats on the surface of the water instantly and does not disperse continuously, thereby maintaining a certain amount of sludge layer. When formed, the sludge layer can be removed, thereby greatly improving the work efficiency and increasing the sludge flocculation effect, thereby greatly improving the wastewater purification efficiency.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000037345A (en) * | 2000-04-19 | 2000-07-05 | 정효현 | Solid separation method and apparatus using minuteness bubble |
| KR20010055004A (en) * | 1999-12-09 | 2001-07-02 | 이구택 | Apparatus for removing sludge by floating of sludge in a settling tank |
| KR100519629B1 (en) * | 2002-11-23 | 2005-10-06 | (주)원진 | The method and wastewater disposal plant of high concentration using protuberance type-pipe reactor |
| KR100742509B1 (en) | 2005-03-17 | 2007-07-24 | (주)수산이엔씨 | Apparatus for sewage sludge flotation using surfactant micro bubble |
| KR100786944B1 (en) * | 2007-02-28 | 2007-12-17 | (주)수산이엔씨 | Method of sewage sludge flotation using surfactant micro bubble |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101421944B1 (en) * | 2012-11-01 | 2014-07-22 | 현대자동차주식회사 | Waste water treatment apparatus in die casting and method for the same |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010055004A (en) * | 1999-12-09 | 2001-07-02 | 이구택 | Apparatus for removing sludge by floating of sludge in a settling tank |
| KR20000037345A (en) * | 2000-04-19 | 2000-07-05 | 정효현 | Solid separation method and apparatus using minuteness bubble |
| KR100519629B1 (en) * | 2002-11-23 | 2005-10-06 | (주)원진 | The method and wastewater disposal plant of high concentration using protuberance type-pipe reactor |
| KR100742509B1 (en) | 2005-03-17 | 2007-07-24 | (주)수산이엔씨 | Apparatus for sewage sludge flotation using surfactant micro bubble |
| KR100786944B1 (en) * | 2007-02-28 | 2007-12-17 | (주)수산이엔씨 | Method of sewage sludge flotation using surfactant micro bubble |
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