KR20060032445A - Bubble removal equipment for reactor - Google Patents

Bubble removal equipment for reactor Download PDF

Info

Publication number
KR20060032445A
KR20060032445A KR1020040081394A KR20040081394A KR20060032445A KR 20060032445 A KR20060032445 A KR 20060032445A KR 1020040081394 A KR1020040081394 A KR 1020040081394A KR 20040081394 A KR20040081394 A KR 20040081394A KR 20060032445 A KR20060032445 A KR 20060032445A
Authority
KR
South Korea
Prior art keywords
waste water
reaction tank
branch pipe
pump
wastewater
Prior art date
Application number
KR1020040081394A
Other languages
Korean (ko)
Inventor
오학수
Original Assignee
현대제철 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대제철 주식회사 filed Critical 현대제철 주식회사
Priority to KR1020040081394A priority Critical patent/KR20060032445A/en
Publication of KR20060032445A publication Critical patent/KR20060032445A/en

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/20Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/002Construction details of the apparatus
    • C02F2201/005Valves
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/26Reducing the size of particles, liquid droplets or bubbles, e.g. by crushing, grinding, spraying, creation of microbubbles or nanobubbles

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physical Water Treatments (AREA)

Abstract

본 발명은 반응조내의 오폐수 표면에 기포층이 형성되는 것을 방지하도록 그 구조가 개선된 반응조의 기포제거장치에 관한 것으로, 그 구조는 오폐수가 일시 저장되는 반응조의 외측에서 오폐수의 표면측으로 물을 분사하는 분사수단을 구비한 것으로, 그 구조는 반응조의 벽체 상부에 설치되는 분기관과, 그 분기관의 일측으로 복수개 설치되며 상호 적정 간격 이격되도록 설치되는 분사노즐과, 그 분기관측으로 반응조내의 오폐수를 적정 압력으로 압송 공급하는 펌프로 구성된 것이다.The present invention relates to a bubble removing device of a reaction tank whose structure is improved to prevent the formation of a bubble layer on the surface of the waste water in the reaction tank, the structure is to spray water to the surface side of the waste water from the outside of the reaction tank where the waste water is temporarily stored. It is provided with the injection means, the structure of the branch pipe is installed on the upper part of the wall of the reaction tank, a plurality of injection nozzles are provided on one side of the branch pipe and installed so as to be spaced apart from each other appropriately, and the waste water in the reaction tank to the branch pipe side. It consists of a pump that supplies pressure by pressure.

이에 따르면 본 발명은 살수장치를 이용하여 반응조내의 화학 처리과정에서 발생된 기포로 인해 오폐수가 반응조 외측으로 누출되는 것을 방지할 수 있는 이점을 갖는다.Accordingly, the present invention has the advantage that it is possible to prevent the waste water leakage to the outside of the reaction tank due to bubbles generated during the chemical treatment in the reaction tank using the watering device.

반응조, 분사수단, 오폐수, 분사노즐Reactor, spray means, waste water, spray nozzle

Description

반응조의 기포제거장치{BUBBLE REMOVAL EQUIPMENT FOR REACTOR}Bubble removing device of reactor {BUBBLE REMOVAL EQUIPMENT FOR REACTOR}

도 1은 일반적인 오폐수의 정화시스템을 나타낸 구성도.1 is a block diagram showing a general wastewater purification system.

도 2는 본 발명에 따른 반응조의 기포제거장치를 나타낸 사시도.Figure 2 is a perspective view showing a bubble removing device of the reaction tank according to the present invention.

도 3은 본 발명의 사용상태도.3 is a state diagram used in the present invention.

* 도면의 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

200 : 반응조 310 : 펌프200: reactor 310: pump

320 : 분기관 330 : 개폐밸브320: branch pipe 330: on-off valve

340 : 분사노즐340: injection nozzle

본 발명은 반응조의 기포제거장치에 관한 것으로, 특히 반응조내의 오폐수 처리과정중에 오폐수의 표면에 발생되는 기포를 용이하게 제거할 수 있도록 그 구조가 개선된 반응조의 기포제거장치에 관한 것이다.The present invention relates to a bubble removing device of a reaction tank, and more particularly, to a bubble removing device of a reaction tank having an improved structure so as to easily remove bubbles generated on the surface of waste water during a waste water treatment process in the reaction tank.

일반적으로, 산업 고도화에 따른 각종 산업 폐기물이 대량으로 발생되고, 그 폐기물들은 환경 및 자연 생태계의 파괴로 이어지며, 그중 산업 폐기물로 인한 수질 오염이 심각한 지경에 이르고 있다.In general, various industrial wastes are generated in accordance with industrial advancement, and these wastes lead to the destruction of the environment and the natural ecosystem, among which water pollution from industrial waste reaches a severe level.

통상 산업의 발전과 도시화는 공업 폐수, 생활하수등의 각종 오폐수를 다량 배출시키게 되고, 이로 인해 한정된 물 자원을 더욱 오염시켜 물 부족현상을 부추기고 있는 실정이다.In general, the development and urbanization of the industry is to discharge a large amount of various wastewater, such as industrial wastewater, domestic sewage, and this is contributing to the water shortage by further contaminating the limited water resources.

그리고, 종래 오폐수 정화방식은 별도의 오폐수 처리장에서 오폐수를 집수하고, 그 집수된 오폐수에 화학약품을 투입하여 정화시키는 화학적 처리방식을 주로 채용하고 있다.In addition, the conventional wastewater purification method mainly employs a chemical treatment method for collecting wastewater in a separate wastewater treatment plant and injecting and purifying chemicals into the collected wastewater.

종래 오폐수 정화시스템은 도 1에 도시된 바와 같이, 외부로부터 유입된 오,폐수중에 침사물이 고여지게 되는 침사조(101)와, 그 침사조(101)내에 설치되어 침사물을 통과한 오폐수의 부유물을 필터링하는 부유물 거름조(102)와, 그 부유물 거름조(102)와 연통 가능하게 설치되고 오,폐수 분배공(103a)이 구비된 오,폐수 분배조(103)와, 그 오,폐수 분배공(103a)과 연통 가능하게 설치된 오,폐수 반응조(104)와, 그 오,폐수 반응조(104)내에 구비되고 상기 오,폐수를 교반시켜 혐기성 처리하는 오,폐수 교반기(20)와, 그 오,폐수 반응조(104)내의 오,폐수중에 함유된 폐기물을 펌핑하여 인출하는 폐기물 인출펌프(40)와, 그 폐기물 인출펌프(40)의 펌핑에 의해 인출된 폐기물을 저장하는 폐기물 저장조(105)와, 오,폐수 반응조내의 정화수를 집수하는 집수수단(50)과, 그 집수수단(50)에 의해 집수된 정화수를 일정 기간동안 저장하여 외부로 방류하는 방류조(106)로 구성된 것이다.Conventional wastewater purification system, as shown in Figure 1, the sedimentation tank 101, the sediment is accumulated in the sewage, the wastewater introduced from the outside, and the sewage of the wastewater installed in the sedimentation tank 101 and passed through the sediment Floating manure tank (102) for filtering the suspended matter, and the sewage, waste water distribution tank 103 is provided so as to communicate with the suspended manure tank 102, the waste water distribution hole (103a), and the waste, waste water A wastewater reaction tank 104 installed in communication with the distribution hole 103a, a wastewater stirrer 20 provided in the wastewater reaction tank 104 for aerobic treatment by agitating the wastewater, and A waste extraction pump 40 for pumping out the waste contained in the wastewater and wastewater in the wastewater reaction tank 104, and a waste storage tank 105 for storing the waste drawn out by pumping the waste extraction pump 40; Collecting means 50 for collecting purified water in the wastewater reaction tank; It is composed of a discharge tank 106 for storing the purified water collected by the 50 for a period of time to discharge to the outside.

이러한 오폐수의 화학적 처리방식은 오폐수를 반응조내에 집수한 후에 화약 약품을 투입하여 화학반응으로 액체상의 오염물질을 슬러지로 변환시켜 제거하는 공정을 가지며, 이때 반응조내의 오폐수와 화학 약품간에 일어나는 화학반응으로 인해 기포가 발생하게 된다.The chemical treatment method of wastewater has a process of converting liquid contaminants into sludge by chemical reaction after collecting the wastewater into the reaction tank, and at this time, due to the chemical reaction between the wastewater and the chemical in the reaction tank. Bubbles are generated.

그 기포는 오폐수의 표면으로 부상하게 되고, 이어서 기포가 모여서 거품군을 형성시킴에 따라 오폐수의 표면으로 차오르게 되어 반응조의 외부로 넘쳐 흐르게 되는 단점이 있었다.The bubble rises to the surface of the waste water, and as the bubbles are collected to form a bubble group, the bubble is filled to the surface of the waste water and has a disadvantage of overflowing to the outside of the reaction tank.

종래 오폐수 정화시스템은 반응조내에 투입되는 화학 약품의 화학 반응에 따라 기포가 발생하게 되고, 이에 따라 그 기포가 오폐수의 표면으로 차오르게 됨에 따라 반응조 외부로 누출될 우려가 있었다.In the conventional wastewater purification system, bubbles are generated according to chemical reactions of chemicals introduced into the reaction tank, and as a result, bubbles are leaked to the outside of the reaction tank as the bubbles are filled to the surface of the waste water.

본 발명은 상기한 제반문제점을 감안하여 이를 해결하고자 안출된 것으로, 그 목적은 반응조내에 담겨진 오폐수의 처리과정중 기포가 발생되는 것을 방지하도록 그 구조가 개선된 반응조의 기포제거장치를 제공하는 데 있다.The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a bubble removing device of a reaction vessel whose structure is improved to prevent bubbles from being generated during the treatment of wastewater contained in the reaction vessel. .

상기한 목적을 달성하기 위한 본 발명은 오,폐수에 화학약품을 투입시켜 정화시키는 반응조와, The present invention for achieving the above object is a reaction tank for purifying the chemicals into the waste water, and

상기 반응조내의 외측에서 오폐수의 표면측으로 물을 분사하되, Injecting water from the outside of the reactor to the surface side of the waste water,

상기 반응조내의 오,폐수를 압송하여 분사하여 화학반응에 의해 발생되는 거품을 제거하기 위한 분사수단을 더 구비하여 된 것이다.It is further provided with a spray means for removing the bubbles generated by the chemical reaction by the injection of the waste water in the reaction tank.

본 발명의 다른 특징으로, 상기 분사수단은 상기 반응조내의 오폐수를 적정 압력으로 압송하기 위한 펌프와,In another aspect of the invention, the injection means and pump for pumping the waste water in the reaction tank to the appropriate pressure,

상기 펌프로부터 압송된 오폐수를 일시 저장하며 복수개로 분기 가능한 분기 관과,A branch pipe which temporarily stores waste water pumped from the pump and is branched into a plurality of branches;

상기 분기관으로부터 각각 수직으로 연결되어 상호 이격되도록 설치되며 상기 펌프의 압력에 의해 오폐수를 상기 반응조내 오폐수의 표면측으로 분사하기 위한 복수개의 분사노즐과,A plurality of injection nozzles installed to be spaced apart from each other by being vertically connected to the branch pipes, and for spraying the waste water to the surface side of the waste water in the reactor by the pressure of the pump;

상기 분기관의 일측에 설치되어 상기 분사노즐측으로 공급되는 오폐수를 선택적으로 차단하기 위한 개폐밸브를 구비하여 된 것이다.It is provided on one side of the branch pipe is provided with an on-off valve for selectively blocking the waste water supplied to the injection nozzle side.

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

본 발명에 따른 반응조의 기포제거장치는, 도 2 및 도 3을 참조, 오폐수가 일시 저장되는 반응조(200)의 외측에서 오폐수의 표면측으로 물을 분사하는 분사수단을 구비한 것으로, 그 구조는 반응조(200)를 구성하는 벽체 상부 테두리 일측에 설치되는 분기관(320)과, 그 분기관(320)의 수직으로 연장된 단부에 복수개 설치되며 상호 적정 간격 이격되도록 설치되는 분사노즐(340)과, 그 분기관(320)측으로 반응조(200)내의 오폐수를 적정 압력으로 압송 공급하는 펌프(310)로 구성된 것이다.Degassing apparatus of the reaction tank according to the present invention, with reference to Figures 2 and 3, provided with the injection means for injecting water to the surface side of the waste water from the outside of the reaction tank 200 where the waste water is temporarily stored, the structure is a reaction tank Branch nozzle 320 which is installed on one side of the upper edge of the wall constituting the 200, and a plurality of injection nozzles 340 are installed at a vertically extending end of the branch pipe 320 and spaced apart from each other appropriately, The pump 310 is configured to pump and supply waste water in the reaction tank 200 at an appropriate pressure to the branch pipe 320.

그외에도, 분기관(320)에는 펌프(310)로부터 공급되는 오폐수의 공급을 선택적으로 차단하기 위한 개폐밸브(330)가 마련된다.In addition, the branch pipe 320 is provided with an on-off valve 330 for selectively blocking the supply of the waste water supplied from the pump 310.

더 상세히 설명하면, 그 분사수단은 반응조(200) 내의 오폐수를 펌프(310)로 압송하여 다시 반응조(200)내부로 분사하여 순환적으로 사용할 수 있도록 되어 있다.In more detail, the spraying means may be used to circulate the waste water in the reaction tank 200 by pumping the pump 310 to the inside of the reaction tank 200 again.

그리고, 침전조의 일측에는 하수 처리장으로부터 오폐수의 공급을 위한 공급파이프(210)가 설치되고, 타측에는 반응조(200)에서 화학처리된 처리수를 다른 공정으로 공급하기 위한 배출파이프(220)가 설치되어 있다.And, one side of the sedimentation tank is provided with a supply pipe 210 for supplying wastewater from the sewage treatment plant, and the other side is provided with a discharge pipe 220 for supplying the treated water chemically treated in the reaction tank 200 to another process. have.

또한, 복수개의 분사노즐(340)은 분기관(320)의 일측에 각기 적정 거리 이격되도록 설치되어 있다.In addition, the plurality of injection nozzles 340 are provided on one side of the branch pipe 320 so as to be spaced apart from each other by an appropriate distance.

이러한 구성을 갖는 본 발명의 작용을 설명하면 다음과 같다.Referring to the operation of the present invention having such a configuration as follows.

먼저, 오폐수가 반응조(200)내로 유입되면, 화학 약품을 반응조(200)내로 투입하고 일정 시간이 경과되도록 저장된 후에 오염물질을 분리 제거할 수 있는 다른 필터나 다른 처리조로 이송되는데, 이어서 오폐수와 화학약품간의 화학반응에 따른 기포가 발생하게 되며, 그 기포는 오폐수의 표면으로 떠오르게 되어 부유층을 형성하게 된다.First, when waste water is introduced into the reaction vessel 200, chemicals are introduced into the reaction vessel 200 and stored for a predetermined time and then transferred to another filter or another treatment tank capable of separating and removing contaminants, followed by waste water and chemicals. Bubbles are generated by chemical reaction between drugs, and the bubbles rise to the surface of the waste water to form a floating layer.

그 오폐수의 화학반응시 표면에 부유층을 형성하는 기포를 제거하기 위하여 본 발명의 기포제거장치를 작동시키면, 분사수단의 펌프(310)에서 반응조(200)내의 오폐수를 분기관(320)측으로 압송시키고, 이어 분기관(320)으로 압송된 오폐수를 복수개의 분사노즐(340)을 통해 선택적으로 반응조(200)내의 오폐수의 표면측으로 분사하게 된다.When the bubble removing apparatus of the present invention is operated to remove bubbles forming a floating layer on the surface during chemical reaction of the waste water, the waste water in the reaction tank 200 is pumped to the branch pipe 320 side by the pump 310 of the injection means. Then, the waste water pumped to the branch pipe 320 is selectively sprayed to the surface side of the waste water in the reaction tank 200 through a plurality of injection nozzles (340).

이때, 분기관(320)에 공급되는 오폐수는 개폐밸브(330)의 온/오프동작에 따라 선택적으로 공급된 후에, 분기관(320)의 일측에 설치된 복수개의 분사노즐(340)측에 각각 공급되어 반응조(200)의 내부로 분사된다.At this time, the waste water supplied to the branch pipe 320 is selectively supplied according to the on / off operation of the on / off valve 330, and then respectively supplied to the plurality of injection nozzles 340 installed on one side of the branch pipe 320. And is injected into the reactor 200.

그 오폐수가 분사노즐(340)을 통해 반응조(200)내로 분사됨에 따라, 오폐수 의 표면에 형성된 기포층을 제거하게 된다.As the waste water is injected into the reaction tank 200 through the injection nozzle 340, the bubble layer formed on the surface of the waste water is removed.

이어서, 그 분사된 오폐수는 반응조(200)내의 오폐수와 혼합된 상태로 다시 섞인 다음에, 화학 처리되어 배출파이프(220)를 통해 다른 곳으로 이송하게 되며, 오염물질이 화학 반응 처리되면서 슬러지화되어 처리수와 분리 제거되는 공정을 갖는다.Subsequently, the injected waste water is mixed with the waste water in the reaction tank 200 again, and then chemically treated and transferred to another place through the discharge pipe 220, and the contaminants are sludged as the chemical reaction is processed. It has a process of separating and removing treated water.

이상과 같이 설명한 본 발명은 반응조내의 오폐수 표면에 기포층이 형성되는 것을 방지하도록 그 구조가 개선된 것인 바, 이에 따르면 본 발명은 살수장치를 이용하여 반응조내의 화학 처리과정에서 발생된 기포로 인해 오폐수가 반응조 외측으로 누출되는 것을 방지하도록 한 효과를 갖는다.The present invention as described above is improved in the structure to prevent the formation of a bubble layer on the surface of the waste water in the reaction tank, according to the present invention due to the bubble generated in the chemical treatment process in the reaction vessel using the watering device It has the effect of preventing the waste water from leaking out of the reactor.

Claims (2)

오,폐수에 화학약품을 투입시켜 정화시키는 반응조(200)에 있어서,In the reaction tank 200 to purify the chemicals into the waste water, 상기 반응조(200)내의 외측에서 오폐수의 표면측으로 물을 분사하되,While spraying water to the surface side of the waste water from the outside in the reaction tank 200, 상기 반응조(200)내의 오,폐수를 압송하여 분사하여 화학반응에 의해 발생되는 거품을 제거하기 위한 분사수단을 더 구비하여 된 것을 특징으로 하는 반응조의 기포제거장치.The bubble removal device of the reaction tank characterized in that it further comprises a spraying means for removing the bubbles generated by the chemical reaction by the injection of the waste water in the reaction tank (200). 제 1항에 있어서, 상기 분사수단은 상기 반응조(200)내의 오폐수를 적정 압력으로 압송하기 위한 펌프(310)와,The method of claim 1, wherein the injection means is a pump 310 for pumping the waste water in the reaction tank 200 to the appropriate pressure, 상기 펌프(310)로부터 압송된 오폐수를 일시 저장하며 복수개로 분기 가능한 분기관(320)과,A branch pipe 320 temporarily storing the waste water pumped from the pump 310 and branching into a plurality of branches; 상기 분기관(320)으로부터 각각 수직으로 연결되어 상호 이격되도록 설치되며 상기 펌프(310)의 압력에 의해 오폐수를 상기 반응조(200)내 오폐수의 표면측으로 분사하기 위한 복수개의 분사노즐(340)과,A plurality of injection nozzles 340 installed to be vertically connected to each other from the branch pipe 320 and spaced apart from each other, and for spraying the waste water to the surface side of the waste water in the reaction tank 200 by the pressure of the pump 310; 상기 분기관(320)의 일측에 설치되어 상기 분사노즐(340)측으로 공급되는 오폐수를 선택적으로 차단하기 위한 개폐밸브(330)를 구비하여 된 것을 특징으로 하는 반응조의 기포제거장치.It is installed on one side of the branch pipe 320, the bubble removing device of the reactor, characterized in that provided with an on-off valve 330 for selectively blocking the waste water supplied to the injection nozzle (340) side.
KR1020040081394A 2004-10-12 2004-10-12 Bubble removal equipment for reactor KR20060032445A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020040081394A KR20060032445A (en) 2004-10-12 2004-10-12 Bubble removal equipment for reactor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020040081394A KR20060032445A (en) 2004-10-12 2004-10-12 Bubble removal equipment for reactor

Publications (1)

Publication Number Publication Date
KR20060032445A true KR20060032445A (en) 2006-04-17

Family

ID=37141826

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020040081394A KR20060032445A (en) 2004-10-12 2004-10-12 Bubble removal equipment for reactor

Country Status (1)

Country Link
KR (1) KR20060032445A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200470086Y1 (en) * 2012-09-18 2013-11-29 명형식 Apparatus for removing bubble in aeration tank

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200470086Y1 (en) * 2012-09-18 2013-11-29 명형식 Apparatus for removing bubble in aeration tank

Similar Documents

Publication Publication Date Title
KR101134099B1 (en) Combined Dissolved Air Flotation and Submerged Membrane Device and Method using Waste Air Reuse and such Device
JP5704605B2 (en) Purification method for contaminated soil
KR101129407B1 (en) Clarification apparatus for nonpoint source pollutants
KR101069773B1 (en) Membrane bioreactor, water disposal apparatus and method thereof
KR101541070B1 (en) method and device for controlling using turbulence stimulation and filter member
KR20000000745A (en) Sewage treatment system by using artificial marsh
JP4136877B2 (en) Floating island type water purification system
KR20060032445A (en) Bubble removal equipment for reactor
KR101204395B1 (en) The apparatus to treat municipal and industrial wastewater
RU2002109789A (en) Method and device for biological wastewater treatment
WO2011001803A1 (en) Filtration membrane module cleaning method and cleaning device
JP2014094322A (en) Multistage organic waste water treatment system
KR100836906B1 (en) External-submersed membrane separtion device
KR100584881B1 (en) Non-powered natural circulation waste and sewage treatment device
KR101181800B1 (en) The method and apparatus to treat municipal and industrial wastewater
KR100870519B1 (en) A dry desulfurization machine
JP5183538B2 (en) Surplus sludge reduction device
KR100501795B1 (en) A dredging system and apparatus of accamulated sludge using pressure floataition method in water area such as the sea,lakes,and rivers
KR20160084027A (en) Non-point Pollutants Removal Equipments of possible back washing and possible back washing control system
KR101003268B1 (en) Equipment for removal of ammonia from waste water
KR101979215B1 (en) Wastewater treatment system for digester
KR200325646Y1 (en) Powerless natural circulation type sewage treatment apparatus
KR200221182Y1 (en) Equipment to avoid foaming in sewage and wastewater treatment plant
JP4526980B2 (en) Sewage treatment system
KR100493646B1 (en) A way and a device to purify sewage,slop, and waste water by using a bed biofilm mehod and a pressure floataion

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application