Abstract:
PURPOSE: A method for detecting damage of a membrane module by injecting fluorescence particle without attachment and detachment of a separate membrane is provide. CONSTITUTION: A method for detecting damage of a membrane module comprises: a step of preparing fluorescence particle of 0.5-1.5 um from a silica; a step of injecting fluorescence particle into the membrane module which is used in waste water disposal process at a concentration of 0mg/ml to 0.1mg/ml; a step of operating a pump when the membrane module is damaged; a step of performing digital imaging; and a step of determining from the digital image to color-developed part and non-developed part.
Abstract:
PURPOSE: An apparatus for purifying river water using soil and a method thereof using the same are provided to increase the amount of water to be processed while effectively removing contaminants in river water regardless of coefficient of river regime. CONSTITUTION: An apparatus for purifying river water using soil includes a river water distribution part installed on the top of a soil layer and a processed water recovery part built in the soil layer and an alluvial layer(202). The water is purified while respectively passing the soil layer and the alluvial layer. The soli layer is classified into a first soil layer(203) and a second soil layer(205). The river water distribution part includes a first pump(111), a first conduit pipe(112), and a plurality of outlets(113). The processed water recovery part includes a first horizontal water collecting pipe(121), a second horizontal water collecting pipe(122), a perpendicular inlet well(123), and a second conduit pipe(124).
Abstract:
A method for remodeling an exiting sewage treatment system into an advanced treatment system and a method for operating the advanced treatment system are provided to remove nitrogen and phosphorous as well as organic materials contained in sewage, by installing a partition wall in an anaerobic tank so as to induce a biological reaction for removing the nitrogen and phosphorous and installing a separation membrane in an aerobic tank so as to produce treatment water. An exiting sewage treatment system includes an aerating tank(1) and a precipitating tank. For remodeling the exiting sewage treatment system into an advanced treatment system, firstly, a partition wall(7) is installed in an aerating tank(1) to divide the aerating tank into an anaerobic tank(8) and an aerobic tank(9). The precipitating tank is used as an equalizing tank(2') for equalizing the flow rate and the quality of sewage inputted into the precipitating tank. An immersion type separation membrane(10) is installed within the aerobic tank so as to suck and filter the sewage and discharge the filtered water. A concentration of MLSS(Mixed Liquor Suspended Solids) is maintained in a range of 4,000-20,000 mg/L within the aerobic tank. A chemical inputting unit(14) is installed at a portion before a region where a mixed liquid of activated sludge overflows from the anaerobic tank to the aerobic tank. The chemical inputting unit inputs a coagulant for inducing the coagulation of phosphorous.
Abstract:
본 발명에서는 반응조, 침전조, 상기 침전조에 대하여 공기를 공급하는 블로워 및 상기 침전조로부터 배출된 반송수를 상기 반응조로 반송하는 반송 펌프를 구비하는 것이고, 상기 반응조 내에는 하나 이상의 격막이 설치되고 상기 격막으로 구분된 각 반응조 구획에는 필요에 따라 교반기가 설치되며, 상기 침전조 내에는 상기 블로워로부터 공급된 공기에 의한 연속적인 폭기와 막여과가 수행되는 침지형 분리막이 설치되는 것을 특징으로 하는 활성 슬러지 공법을 이용하는 기존의 하수 처리 공정으로부터 개선된 고도처리장치 및 방법을 제공한다. 본 발명에 따르면 기존의 활성 슬러지 공법을 사용하는 하수처리공정을 질소와 인을 처리할 수 있는 고도처리공정으로 개선함에 있어서, 기존의 반응조와 설비를 그대로 이용하기 때문에 고도처리공정으로의 개선 비용이 절감되고 추가의 반응조 설치를 위한 소요부지를 요하지 않아서 경제적이며 효과적이다. 또한, 막여과 공정에 의해 처리수를 생산함으로써 완벽한 고액 분리가 이루어지기 때문에 화학적 소독과정 없이 대장균이나 병원성 미생물 등이 제거된 고도로 깨끗한 처리수질을 유지할 수 있으므로 생산되는 처리수를 별도의 추가적인 처리 없이 화장실 용수, 자동차 세척수, 조경용수, 도로 청소수 등 중수로 바로 재이용할 수 있다. 고도처리, 활성슬러지, 반응조, 격막, 침전조, 침지형분리막, 플러그흐름
Abstract:
본 발명은 외부 탄소원의 공급 없이 하폐수 내에 포함되어 있는 질소 등의 영양 염류를 효과적으로 제거할 수 있는 생물학적 하폐수 처리 장치에 관한 것으로서, 본 발명에 따른 생물학적 하폐수 처리 장치는 밀폐형의 소정 공간을 갖는 반응조;와, 상기 반응조 내에 구비되며 표면에 미생물이 부착되어 있는 복수개의 담체;와, 상기 반응조 일측에 구비되어 있어 상기 반응조 내부로 수소 가스를 공급하는 수소 가스 공급장치를 포함하여 이루어지는 것을 특징으로 한다.
Abstract:
PURPOSE: Provided are ground water in-situ and out-site treatment methods for removing nitrates in ground water or river water filtrate using a permeable reactive wall, a reaction tank and a packed column containing autotrophic sulfur oxidizing microorganism therein. CONSTITUTION: The in-situ method comprises the steps of (a) preparing permeable reactive wall using sulfur oxidizing microorganism or sulfur powder fixing the sulfur oxidizing microorganism thereto, (b) installing the permeable reactive wall in the middle of ground water passage way, and (c) purifying ground water polluted with nitrates by passing the polluted ground water through the permeable reactive wall.
Abstract:
PURPOSE: Provided are membrane coupled activated sludge reactor incorporating advanced oxidation process and process using the same, wherein activated sludge is decomposed by ozone oxidation and residual ozone is used for cleaning a membrane so as to continuously operate the sludge treatment apparatus and prevent clogging of the membrane, thereby preventing sludge discharge, expanding operation time of the membrane, and reducing maintenance cost for the membrane cleaning. CONSTITUTION: The apparatus comprises a bioreactor with a membrane(2) which is submerged, an ozone generator(5) for generating ozone, an ozone contact oxidation tank(6) for bringing the ozone generated by the ozone generator into contact with sludge(4), a treated water tank(9) for temporarily storing filtrate of the membrane(2) for bringing the filtrate into contact with residual ozone of the oxidation contact tank(6), and a back washing pipe line for transferring the filtrate mixed with the residual ozone(8) to the membrane(2) for washing the membrane(2). The method comprises the steps of (a) biologically treating wastewater using a bioreactor with a submerged membrane, (b) storing the treated water of the bioreactor to a treated water tank, (c) introducing sludge generated from the bioreactor to an ozone contact oxidation tank and decomposing the sludge by ozone oxidation, (d) introducing the decomposed sludge again to the bioreactor to use it as external nutrient, (e) introducing residual ozone which is remained after ozone oxidation in the ozone contact oxidation tank to the treated water tank to mix the ozone with the treated water, and (f) introducing the treated water with ozone into the membrane through a back washing pipe line for oxidizing and detaching pollutant attached onto pores of the membrane.
Abstract:
PURPOSE: A device for more economical removal of high concentration nitrogen from wastewater using MLE (Modified Ludzack Ettinger) process is provided, which is characterized in that heterotrophic denitrification process is employed after the MLE process, wherein elemental sulfur is used as electron donor for the growth of heterotrophic denitrifying bacteria. CONSTITUTION: The device comprises a heterotrophic denitrification unit(1) comprising an anoxic tank(2), an aerobic tank(3) for nitrifying wastewater and an inter return line(5) for continuously returning nitrified wastewater from the aerobic tank to the anoxic tank; a clarifier(4) for settling suspended solids down; an inflow weir(12) over which water flows; a sulfur packed bed reactor(10) in which granular sulfur(15) is packed and the inflow weir is formed at one upper side therein; a back wash weir(16) which is formed at a position lower than that of the inflow weir inside the reactor; an air compressor(20) which upwardly supplies pressurized air into the sulfur packed bed reactor; a back wash valve(21) which is installed on a pipe through which the compressor is connected to the sulfur packed bed reactor; an effluent storage tank(30) into which effluent of the sulfur packed bed reactor is introduced through an effluent pipe(40,41); an effluent valve(33) which is installed on the effluent pipe; a reverse injection valve(32) with one end connected to the effluent pipe between the effluent valve and the sulfur packed bed reactor, and the other end connected to bottom portion of the effluent storage tank; and a reverse injection pump(31) which is installed between the reverse injection valve and the effluent storage tank.
Abstract:
PURPOSE: A method for managing waste water without exhausting sludge includes a process which sludge is returned to biological treatment tank and a process which the sludge is reused for feeding microorganism. CONSTITUTION: Some part of sludge which is exhausted from second settling pond(21) are returned to aeration tank(22) without specific treatment. Remained sludge is reused as food for microorganism, so the sludge is disintegrated perfectly by biological treatment of microorganism. Microorganisms included sludge are destroyed by ionized gas or oxidation of oxidant. The method is composed of generator for ionized gas(31), disintegrating tank for sludge(32), circulation pump(33), and mixing device(34). The method is used for removing nitrogen and phosphorus, and sludge does not exhausted because the sludge is reused foe carbon source.
Abstract:
본 발명은 질소 및 인 등의 영양소 제거를 겸비한 생물학적 수처리 공정에서 상등수와 상등수 위에 뜨는 스컴을 효율적이고 경제적으로 분리할 수 있는 상등수 분리 방법 및 그에 사용되는 상등수 분리/방류 장치를 제공한다. 본 발명에 의한 방법은 처리조의 수면에 떠 있는 스컴을 처리조 내에 위치한 상등수 분리/방류 장치로부터 멀어지는 방향으로 소정의 범위 밖으로 밀어내는 단계와, 상기 소정의 범위 밖으로 밀어낸 스컴이 상등수와 함께 처리조 외부로 방류되지 않도록 상기 장치를 향한 유동을 억제하는 단계와, 스컴의 유동을 억제한 상태에서 상기 장치의 방류기 몸체를 처리조의 수면 이하로 하강시켜 스컴과 분리된 상등수를 상기 방류기 몸체 및 상등수 배출 파이프를 통해 방류시키는 단계를 포함한다. 또한, 본 발명에 의한 상등수 분리/방류 장치는 방류기 몸체, 방류기 몸체 구동 수단, 플로팅 배리어, 방류기 아암, 방류기 아암 구동 수단, 및 방류기 몸체에 신축성 있게 밀봉 연결된 배출 파이프를 포함한다. 본 발명에 따르면, 질소 및 인 등의 영양소 제거를 겸비한 생물학적 수처리 공정에서 상등수와 상등수 위에 뜨는 스컴을 효율적이고 경제적으로 분리할 수 있게 되며, 값비싼 MF 여과막 등을 사용하지 않고도 상등수와 스컴을 효율적으로 분리할 수 있다.