Abstract:
PURPOSE: A method for continuously monitoring BOD of wastewater using a microorganism fuel cell is provided. Therefore, BOD of wastewater is continuously monitored by calculating correlation value between the organic matter concentration in wastewater and electric current value. CONSTITUTION: A method for continuously monitoring BOD of wastewater using a microorganism fuel cell comprises the steps of: introducing different BOD of wastewater into the cathode portion of the microorganism fuel cell to determine a change of electric current value according to the concentration of wastewater and determine BOD where a constant electric current value is maintained; calculating the correlation equation between the electric value and the BOD concentration of wastewater; and introducing a testing wastewater to the fuel cell to measure the constant electric current value produced from the fuel cell and determine BOD of wastewater through the correlation equation between the electric current value and wastewater BOD.
Abstract:
PURPOSE: A biological removing method of heavy metal from wastewater using a packed bed reactor containing organic media is provided, which can treat heavy metal contained wastewater simply in a reduced time by using insoluble solid organic matter (organic media) that can function as a source of nutrients for microorganism and by controlling hydraulic retention time (HRT) according to the concentration of metal contained in wastewater. CONSTITUTION: The method comprises as follows: (i) neutralize wastewater using lime stone; (ii) mix with sludge of anaerobic digestion tank; and (iii) feed the mixture to a packed bed reactor packed with solid organic matters for reduction treatment of wastewater containing heavy metal using sulfate reducing bacteria, the organic matter being a mixture of paper manufacturing sludge and waste oak remaining after culturing Lentnus edodes, the heavy metal being sexivalent chrome, sexivalent uranium and sexivalent selenium.
Abstract:
저렴한 비용으로 단시간 내에 중금속 폐수 중의 중금속을 제거하는 방법에 관한 것으로서, 이 방법은 종래의 황산염 환원세균에 의한 중금속 제거 방법에 있어서, 종래의 황산염 환원 세균의 생장에 필요한 유기물원으로 사용하던 버섯 배양토를 표고 버섯 재배용 참나무류 원목, 그 재배 후 남은 폐목, 또는 종이 재생 공정에서 부산물로 생산되는 제지 슬러지로 대체하고, 또한 황산염 환원 세균의 농도를 증가시킬 수 있도록 혐기성 소화조 오니 및(또는) 혐기적으로 농화된 미생물원을 상기 유기물원과 함께 사용하는 것을 특징으로 한다.
Abstract:
본 발명에 의한 저농도 BOD 계측기용 미생물연료전지는, 호소 및 상수원의 저농도 BOD를 계측하기 위한 바이오센서로 이용되는 미생물연료전지로서, 양극, 음극, 이들 양극 및 음극의 전도매체 및 이들 두 극 사이의 이온 교환막을 포함하여 구성되며, 상기 양극은 산소에 대한 친화성이 높은 백금 또는 구리로 이루어진 전극이고, 상기 이온교환막의 막면적은, 음극부에서 양극부로 확산되는 수소이온이 제한인자로 작용하지 않도록, 최대 BOD 제거속도를 기준으로 하여 발생되는 시간당 수소이온의 양을 막을 통한 수소이온의 전달 속도로 나눈 값으로 하는 것을 특징으로 한다. 본 발명에 의한 저농도 BOD 계측기는, 상기의 저농도 BOD 계측기용 미생물연료전지를 포함하여 구성되는 것을 특징으로 한다.
Abstract:
PURPOSE: A method for measuring low concentration of BOD by using a microbial fuel cell type BOD apparatus using low nutritional requirement and electrochemically active microorganisms is provided, thereby stably and correctly measuring low density of BOD. CONSTITUTION: A microbial fuel cell type BOD apparatus using low nutritional requirement and electrochemically active microorganisms comprises a BOD measuring portion, an electronic current detecting portion, and a recording portion recording a change of the electronic current detected, wherein the BOD measuring portion comprises an anode portion, a cathode portion, a conduction medium and an ion exchange membrane between the anode and cathode. The method for measuring low concentration of BOD comprises adding waste water as a source of low nutritional requirement and electrochemically active microorganisms and glucose and glutamic acid as substrates into the cathode portion and culturing them.
Abstract:
PURPOSE: An electrochemical multi-stripping analysis method and system for detecting and measuring heavy metal ion is provided to suppress interference effect of ions and achieve improved accuracy for measurement, while preventing environmental contamination. CONSTITUTION: A multi-stripping analysis system comprises an electrochemical cell(2) where an electrochemical reaction like plating or stripping occurs; a potentiostat/galvanostat(1) for applying electric potential or current to the gap between electrodes and detecting response resulted from the application of electric potential or current; and a computer for controlling each unit and analyzing result. The electrochemical cell includes multiple electrodes(WE) as a working electrode; a reference electrode(RE) for controlling and measuring electric potential of the working electrode; and a counter electrode(CE) having a wide area so as to allow the working electrode to have a smooth current flow.
Abstract:
본발명은황산염환원세균을이용하여 6가크롬등의중금속함유폐수를처리하는방법에있어서, 불용성의고형유기물 (유기성담체)가충전된충전층반응기를이용하는폐수처리방법에관한것이다. 또한, 중금속의처리효과를높이기위해서, 유기수용성폐수를유기성담체와혼합하거나또는별도로동시에공급할수 있는데, 이때 유기성폐수에서유래하는유기물이처리수로배출되지않도록운전함으로써동시에두 가지폐수의처리가가능하다. 본발명의방법은다른중금속이함유된폐수에도적용가능하다.