Korea Institute of Science and Technology

Samyoung Global

Yunchul Chung

Min Kyu Choi

Seok Won Hong

Sanghyup Lee

Seockheon Lee

Jin Young Jung

Boyoung Jeong

Chanhyuk Park

Kang Woo Cho

Daeyoung Kwon

Hyokwan Bae

Yongxun Jin

Dae Hee Choi

Changhyun Ryu

Dongkuk Shin

Dong Ryeol Lee

Jin-Young Jung

Hee Jeong Yang

The present invention relates to a sewage treatment system using granules, and more particularly, the sewage treatment system includes: an anoxic tank which has a sewage inlet port into which sewage is introduced; an anaerobic tank which is connected to the anoxic tank; intermittent aeration tanks which are connected to the anaerobic tank, have two or more separately divided spaces, and have, in the spaces, granules and aeration devices that alternately operate; and a settling tank which is connected to the intermittent aeration tanks, and the sewage treatment system is operated by a method including: a first step of introducing sewage; a second step of allowing the introduced sewage to pass through the anoxic tank and to be supplied with carbon; a third step of allowing the sewage passing through the anoxic tank to be introduced into the anaerobic tank; a fourth step of allowing the sewage passing through the anaerobic tank to be introduced into a first intermittent aeration tank and a second intermittent aeration tank which include the aeration devices and the granules including nitrogen treatment microorganisms; a fifth step of allowing the first intermittent aeration tank to be in an aeration state and the second intermittent aeration tank to be in a non-aeration state; and a sixth step of allowing the first intermittent aeration tank to be in the non-aeration state and the second intermittent aeration tank to be in the aeration state.

Sewage treatment system using granule

Disclosed is a method for preparing the same. The method for preparing a carrier including ammonium oxidizing bacteria immobilized therein includes: preparing a PVA-alginate mixed solution containing PVA mixed with alginate; adding sludge containing ammonium oxidizing bacteria and sodium bicarbonate (NaHCO) to the PVA-alginate mixed solution to obtain a foaming-beading solution; and dropping the foaming-beading solution to a saturated boric acid solution to obtain beads including sludge immobilized therein, wherein sodium bicarbonate (NaHCO) is decomposed to produce carbon dioxide (CO) which is discharged to the exterior of the beads to form pores in the beads, when the foaming-beading solution is dropped to the saturated boric acid solution to obtain beads including sludge immobilized therein.

Carrier including ammonium oxidizing bacteria immobilized therein and method for preparing same

The apparatus for water treatment using in-situ activation of a manganese dioxide catalyst includes: a reaction bath configured to give a space where aqueous organic contaminants are removed by means of reaction with permanganate (MnO) generated by electrochemical oxidation of manganese oxide (MnO); a plurality of manganese dioxide catalysts provided at the reaction bath and electrochemically oxidized into permanganate (MnO) by a voltage applied thereto; and a power supply device configured to apply power to the manganese dioxide catalyst so that the manganese dioxide (MnO) is electrochemically oxidized into permanganate (MnO).

Apparatus and method for water treatment using in-situ activation of manganese dioxide catalyst

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Seoul, South Korea

Yunchul Chung