Korea Institute of Science and Technology

Gracel Display Inc.

Mi Ae Lee

Tae Hyung Kim

Wan Cheol Park

Sung Min Kim

Young Jun Cho

Hyuck Joo Kwon

Bong Ok Kim

Seung Soo Yoon

Chang Ju Lee

Kyung Lyong Choi

Seung Ho Lee

The present invention relates to a deodorizing apparatus using native microorganisms. Specifically, the present invention relates to a deodorizing apparatus using native microorganisms for removal of malodors of sewage treatment plant sludge, comprising a native microorganism activating tank, where a colony of the native microorganisms in a spore state is germinated and activated through a proliferation process under conditions where oxygen and organic materials are supplied, and the native microorganisms returned from a second deodorizing tank is further activated; and a first and a second deodorizing tanks which remove malodorants from untreated matter under conditions where oxygen and the activated native microorganisms are continuously supplied. The deodorizing apparatus of the present invention, which is an eco-friendly and economical method using native microorganisms, can effectively remove malodor generated from various types of sludge including a primary sludge, a secondary sludge, a sludge containing night soil, etc. produced from sewage treatment plants.

Apparatus for deodorizing sewage treatment plant sludge by using native microorganisms

The present invention relates to novel compounds for electronic material, and organic electroluminescent devices or organic solar cells comprising the same. Specifically, the compounds for electronic material according to the invention are characterized in that they are represented by Chemical Formula (1):  Since the compounds for electronic material, when being applied to an organic electroluminescent device, show good luminous efficiency and excellent life property of material, OLED's having very good operation life can be manufactured therefrom.

Compounds for electronic material and organic electronic device using the same

Disclosed are efficient municipal wastewater treatment apparatus and process characterized in that the nitrogen is removed by nitrification and denitrification reaction in the cyclic aeration reactor wherein Anaerobic state, Anoxic state and Oxic state are change into time concept in a single reactor, and the untreated organic materials are further removed by the 24-hour-continuous reactor.

Municipal wastewater treatment apparatus and process with a continuous feed and cyclic aeration

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Seoul, South Korea

Mi Ae Lee