公开(公告)号：KR1020090085760A

公开(公告)日：2009-08-10

申请号：KR1020080011547

申请日：2008-02-05

Applicant: 재단법인서울대학교산학협력재단

Inventor： 이정학 ,  이우녕

IPC: C02F3/20 ,  B01D61/02

CPC classification number: Y02W10/15 ,  C02F3/20 ,  B01D61/02 ,  C02F2303/22 ,  C02F2303/24

Abstract: An aeration method of a membrane bioreactor is provided to reduce running cost by reducing backwashing or chemical cleaning frequency, and removing a bio-membrane efficiently in consideration of the structure property of the bio-membrane. An aeration method of a membrane bioreactor is formed to remove a bio-membrane which is formed on the surface of a separation membrane dipped in a bioreactor for water treatment. The method includes a step for increasing aeration intensity of the separation membrane which is near to a suction pump. The aeration intensity is increased according to a longitudinal direction of the separation membrane. The aeration is performed on a part which is neat the end of the suction pump according to the longitudinal direction of the separation membrane. The dipped separation membrane is a hollow fiber membrane or a tubular membrane.

Abstract translation: 提供膜生物反应器的曝气方法，通过减少反洗或化学清洗频率来降低​​运行成本，并考虑到生物膜的结构特性有效地去除生物膜。 形成膜生物反应器的曝气方法，以除去在浸渍在生物反应器中用于水处理的分离膜的表面上形成的生物膜。 该方法包括增加靠近抽吸泵的分离膜的通气强度的步骤。 曝气强度根据分离膜的纵向方向增加。 根据分离膜的长度方向对抽吸泵的端部整齐地进行曝气。 浸渍分离膜是中空纤维膜或管状膜。

公开(公告)号：KR100981519B1

公开(公告)日：2010-09-10

申请号：KR1020070136932

申请日：2007-12-24

Applicant: 재단법인서울대학교산학협력재단

Inventor： 이정학 ,  연경민

IPC: C02F3/10

CPC classification number: B03C1/015 ,  A01N37/46 ,  B03C1/30 ,  B03C2201/18 ,  A01N25/26

Abstract: 본 발명은 수처리용 분리막 생물 반응조(membrane bioreactor, MBR) 장치에서 운전이 진행됨에 따라 분리막 표면에서 성장하는 생물막(biofilm)에 의해 야기되는 생물막오염(biofouling)을 억제하는 기술에 관한 것으로서, 보다 구체적으로는 생물막 형성을 억제할 수 있는 정족수 감지 억제 효소를 고정화시킨 자성 담체와, 이를 이용하여 효소의 유실 내지는 비활성화 없이 안정적으로 운전할 수 있는 분리막 생물반응조 수처리 공정에 관한 것이다.

公开(公告)号：KR1020090069086A

公开(公告)日：2009-06-29

申请号：KR1020070136932

申请日：2007-12-24

Applicant: 재단법인서울대학교산학협력재단

Inventor： 이정학 ,  연경민

IPC: C02F3/10

CPC classification number: B03C1/015 ,  A01N37/46 ,  B03C1/30 ,  B03C2201/18 ,  A01N25/26

Abstract: A magnetic carrier and a membrane bioreactor system for water treatment using the same are provided to improve the filtration performance of membranes, recycle the enzyme and stably operate the water treatment process for a long time compared to the conventional membrane bioreactor process. A magnetic carrier comprises a magnetic core, an enzyme immobilizing layer formed on the magnetic core, and an enzyme for inhibiting the biofilm formation which is immobilized onto the enzyme immobilizing layer. The magnetic core is powders, particles, beads, or resins comprising magnetic substances. The enzyme immobilizing layer is laid up on the magnetic core by an electrostatic interaction. The enzyme immobilizing layer is formed of chitosan, poly(2-hydroxyethyl methacrylate) or cellulose. The enzyme for inhibiting the biofilm formation is a quorum sensing inhibition enzyme.

Abstract translation: 提供一种用于水处理的磁性载体和膜生物反应器系统，以提高膜的过滤性能，循环使用酶，并与常规膜生物反应器方法相比长时间稳定地操作水处理过程。 磁性载体包括磁芯，形成在磁芯上的酶固定层和用于抑制固定在酶固定层上的生物膜形成的酶。 磁芯是包含磁性物质的粉末，颗粒，珠粒或树脂。 酶固定层通过静电相互作用放置在磁芯上。 酶固定层由壳聚糖，聚（甲基丙烯酸2-羟乙酯）或纤维素形成。 用于抑制生物膜形成的酶是法定感测抑制酶。

公开(公告)号：KR100832565B1

公开(公告)日：2008-05-26

申请号：KR1020060135260

申请日：2006-12-27

Applicant: 재단법인서울대학교산학협력재단

Inventor： 윤제용 ,  김철진 ,  김재은 ,  이정학 ,  박형연

IPC: C07D307/46

Abstract: An antibacterial furanone derivative is provided to function as a quorum sensing antagonist, which interrupts communication among bacteria due to a chemical structure similar to a material used for the communication of the bacteria, thereby being used for preventing formation of a biofilm. A method for preventing formation of a biofilm comprises a step of contacting an antibacterial furanone derivative represented by a formula(1)(wherein R is C1-10 alkyl or C1-10 haloalkyl) with microorganism to inhibit the formation of the biofilm, wherein the antibacterial furanone derivative is represented by a formula(2), (3), (4), (5), (6), (7) or (8) and the microorganism includes Gram negative bacillus.

Abstract translation: 提供抗菌呋喃酮衍生物作为法定感测拮抗剂，其由于与用于细菌通信的材料类似的化学结构而中断细菌之间的交流，从而用于防止生物膜的形成。 防止生物膜形成的方法包括使由式（1）表示的抗菌呋喃酮衍生物（其中R为C 1-10烷基或C 1-10卤代烷基）与微生物接触以抑制生物膜形成的步骤，其中 抗菌呋喃酮衍生物由式（2），（3），（4），（5），（6），（7）或（8）表示，微生物包括革兰氏阴性杆菌。