Abstract:
PURPOSE: Provided is a wastewater disposal method using a suction hollow fiber membrane and an activated sludge process. The method is characterized in that aerobic and anoxic process are intersected in the same reactor, so, nitrification and denitrification are occurred for rapid nitrogen removal. Also, organic material removal, nitrogen removal, and solid-liquid separation are carried out together in the same reactor, thereby, additional reactor or transfer pipe is not necessary. Organism is maintained at high concentration in the method, so, removal efficiency of organic material and nitrogen is high, and hydraulic retention time is reduced largely. CONSTITUTION: The method is characterized by intersection of anoxic and aerobic process in the same reactor. In the anoxic process, aeration into the reactor is stopped, and, anoxic mixing by submerged pump and raw wastewater inflow is carried out. Thereby, denitrification is occurred. In the aeration process, aeration and membrane filtration by suction pump are carried out. Air bubble produced from a diffuser makes aerobic condition, and prevents membrane occlusion by turbulent flow of air bubble. In the aerobic process, nitrification is occurred.
Abstract:
The present invention relates to a device and a method for culturing microalgae applied with chloramines producing and reducing reactions. Ammoniacal nitrogen included in livestock waste is used as a source for culturing microalgae. A part of the ammoniacal nitrogen is chlorine-reduced, so that the concentration of the ammoniacal nitrogen is reduced. The organic material of the livestock waste is oxidized through chloramines generated by chlorine-reduction. Accordingly, appropriate concentration ammoniacal nitrogen and low color degree environment are constituted, so that the culturing efficiency of the microalgae can be improved. The device according to the present invention comprises: an anaerobic digestion tank which anaerobically digesting livestock waste; an MBR tank which biologically treats an anaerobic digestion liquid of the anaerobic digestion tank in order to be separated into sludge and effluent; a chlorine contact tank which converts ammoniacal nitrogen into chloramines included in the effluent of the MBR tank by making the effluent of the MBR tank reacted with a fluorine source and induces the oxidation of organic material by means of the chloramines; a dechlorination tank which removes chlorine components remaining in the effluent of the chlorine contact tank using a dechlorination agent; and a microalgae culturing tank which cultures microalgae using residual nitrogen and phosphorous included in the effluent of the dechlorination tank as nutrients.
Abstract:
본 발명은 가축분뇨의 혐기성소화액을 MBR조를 통해 생물학적으로 처리하여 유기물과 고형성분을 제거하고, 잔여 질소와 인이 포함된 MBR조 유출수를 미세조류의 배양액으로 이용함으로써 가축분뇨의 질소와 인을 효과적으로 제거함과 함께 미세조류의 배양효율을 동시에 향상시킬 수 있는 혐기소화조 및 MBR조를 이용한 미세조류 배양장치 및 방법에 관한 것으로서, 본 발명에 따른 혐기소화조 및 MBR조를 이용한 미세조류 배양장치는 가축분뇨를 혐기성소화시키는 혐기소화조와, 상기 혐기소화조의 혐기성소화액을 생물학적으로 처리하여 슬러지와 유출수로 분리하는 MBR조와, 상기 MBR조의 유출수 내에 포함되어 있는 잔여 질소 및 인을 자양분으로 이용하여 미세조류를 배양하는 미세조류 배양조 및 상기 미세조류 배양조의 원수를 미세조류와 처리수� � 분리하는 미세조류 분리막을 포함하여 이루어지며, 상기 혐기성소화액에 포함되어 있는 질소와 인은 상기 MBR조에 의해 슬러지의 형태로 분리되며, 상기 혐기성소화액에 포함되어 있는 일부의 질소와 인은 유출수로 배출되어 상기 미세조류 배양조로 공급되는 것을 특징으로 한다.
Abstract:
The present invention relates to an anaerobic wastewater treatment apparatus having a membrane and a method thereof capable of generating biogas by anaerobically treating wastewater and also effectively preventing the contamination on the surface of a separation membrane. The anaerobic wastewater treatment apparatus having a membrane according to the present invention comprises an anaerobic bio-reactor for filtering and removing contaminants in wastewater while anaerobically digesting the wastewater; an anaerobic membrane bio-reactor for filtering, in a separation membrane module, wastewater discharged from the anaerobic bio-reactor and providing a room for anaerobically digesting wastewater; a submerged separation membrane module contained in the anaerobic membrane bio-reactor so as to filter wastewater; a rotating disk contained in the submerged separation membrane module and inducing the turbulence of wastewater by rotating; and second floating filter media contained in the anaerobic membrane bio-reactor and floating according to the flow of wastewater so as to detach contaminant materials from the surface of the separation membrane module. [Reference numerals] (140) First biogas storage tank;(260) Second biogas storage tank
Abstract:
PURPOSE: A method for culturing microalgae is provided to culture microalgae using mineral from mine drainage, thereby purifying the mine drainage while the microalgae are cultured. CONSTITUTION: A method for culturing microalgae comprises the steps of: supplying phosphorus (P) and nitrogen (N) used in culturing microalgae; neutralizing mine drainage; supplying neutralized mine drainage of pH 6-8; culturing the microalgae using iron in the neutralized mine drainage; and separating the cultured microalgae and a supernatant.