Abstract: The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By comprising the compound according to the present disclosure, it is possible to produce an organic electroluminescent device having improved driving voltage, power efficiency, and/or lifetime properties compared to the conventional organic electroluminescent devices.

Abstract: The present invention relates to a food waste dryer comprising: a main body in which a drying space is formed so that a portion thereof is open to the outside; a front door for closing the open portion of the main body; a drying basket which is disposed in the drying space of the main body and in which food is accommodated; an air circulation unit which includes a heater capable of heating the air of the drying space, and which suctions the air inside the drying space, and then blows, at the food waste, the air heated by the heater so as dry the food waste; a circulation pipe capable of discharging, to the outside through an exhaust pipe, the air that includes steam vaporized during a food waste drying process, and recirculating, to the drying space through a blowing pipe, the air heated by the heater; and a deodorizing device mounted on the outside of the main body so as to adsorb odor particles from the air discharged to the outside through the circulation pipe, thereby enabling the air to be deodorized, wh

Abstract: A biological removal method of phosphorus and nitrogen includes supplying a mixture gas into a gas holder. Inflow water and return water are supplied into the gas holder to make the mixture gas dissolved in the inflow water and the return water. The return water was provided from a granulation biological reaction tank. The inflow water and the return water including the dissolved mixture gas are transported to the granulation biological reaction tank. A nitrogen-based component is removed from the inflow water and the return water using methan-oxidizing bacteria granulated in the granulation biological reaction tank. Treated water without the nitrogen-based component is transported to an anoxic tank for treatment, and discharged from the anoxic tank.

Abstract: A biological removal method of phosphorus and nitrogen includes supplying a mixture gas into a gas holder. Inflow water and return water are supplied into the gas holder to make the mixture gas dissolved in the inflow water and the return water. The return water was provided from a granulation biological reaction tank. The inflow water and the return water including the dissolved mixture gas are transported to the granulation biological reaction tank. A nitrogen-based component is removed from the inflow water and the return water using methan-oxidizing bacteria granulated in the granulation biological reaction tank. Treated water without the nitrogen-based component is transported to an anoxic tank for treatment, and discharged from the anoxic tank.

Abstract: A biological removal method of phosphorus and nitrogen includes supplying a mixture gas into a gas holder. Inflow water and return water are supplied into the gas holder to make the mixture gas dissolved in the inflow water and the return water. The return water was provided from a granulation biological reaction tank. The inflow water and the return water including the dissolved mixture gas are transported to the granulation biological reaction tank. A nitrogen-based component is removed from the inflow water and the return water using methan-oxidizing bacteria granulated in the granulation biological reaction tank. Treated water without the nitrogen-based component is transported to an anoxic tank for treatment, and discharged from the anoxic tank.

Abstract: The present invention provides a garbage dryer. The garbage dryer detects changes in the temperature inside a dryer using a dielectric sensor by detecting changes in the dielectric constant of garbage and controls a heater and an air circulation fan on the basis of the result of the temperature change detection. Accordingly, the garbage dryer always maintains the inner temperature at a constant temperature and air flow at a constant rate, so that it is possible to increase the drying efficiency and deodorizing efficiency which is attained using an improved deodorizing agent.

Abstract: A biological removal method of phosphorus and nitrogen includes supplying a mixture gas into a gas holder. Inflow water and return water are supplied into the gas holder to make the mixture gas dissolved in the inflow water and the return water. The return water was provided from a granulation biological reaction tank. The inflow water and the return water including the dissolved mixture gas are transported to the granulation biological reaction tank. A nitrogen-based component is removed from the inflow water and the return water using methan-oxidizing bacteria granulated in the granulation biological reaction tank. Treated water without the nitrogen-based component is transported to an anoxic tank for treatment, and discharged from the anoxic tank.

Abstract: Provided is an apparatus for processing sewage by granulating activated sludge and a method thereof. The sewage processing apparatus includes an anaerobic granulation tank for granulating suspended microorganisms; an indirect aeration tank for supplying oxygen to the supernatant transported through a first transport pipe; an aerobic granulation tank for granulating suspended microorganisms; and a discharge pipe for discharging supernatant of finished water obtained after circulating a series of the anaerobic granulation tank, the first transport pipe, the indirect aeration tank, the aerobic granulation tank repeatedly.

Abstract: Provided is an apparatus for processing sewage by granulating activated sludge and a method thereof.