Patents by Inventor Eui-Sin Lee

Eui-Sin Lee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8557114
    Abstract: The present invention provides a water purification apparatus and method using a pressurized micro-filter preprocessed with a coagulation inclined-plate sedimentation reservoir and a pore-control fiber filter for improvement of a recovery rate, which removes the dissolved organic materials and the turbidity of raw water through a preprocess by a flash mixer, a two-stage coagulation reservoir and an inclined-plate sedimentation reservoir, thereby making it possible to reduce the use of coagulants, the generation of sludge by-products, the inflow load of membranes, and the facility size in comparison with the conventional standard water purification processes.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: October 15, 2013
    Assignee: Daewoo E&C Co., Ltd.
    Inventors: Eui-Sin Lee, Bum-Goo Lee, Hee-Kyong Oh, Jung-Yeol Eom
  • Patent number: 8518261
    Abstract: The present invention provides a water purification apparatus and method using a pressurized micro-filter preprocessed with a coagulation inclined-plate sedimentation reservoir and a pore-control fiber filter for improvement of a recovery rate, which removes the dissolved organic materials and the turbidity of raw water through a preprocess by a flash mixer, a two-stage coagulation reservoir and an inclined-plate sedimentation reservoir, thereby making it possible to reduce the use of coagulants, the generation of sludge by-products, the inflow load of membranes, and the facility size in comparison with the conventional standard water purification processes.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: August 27, 2013
    Assignee: Daewoo E&C Co., Ltd.
    Inventors: Eui-Sin Lee, Bum-Goo Lee, Hee-Kyong Oh, Jung-Yeol Eom
  • Publication number: 20130015132
    Abstract: The present invention provides a water purification apparatus and method using a pressurized micro-filter preprocessed with a coagulation inclined-plate sedimentation reservoir and a pore-control fiber filter for improvement of a recovery rate, which removes the dissolved organic materials and the turbidity of raw water through a preprocess by a flash mixer, a two-stage coagulation reservoir and an inclined-plate sedimentation reservoir, thereby making it possible to reduce the use of coagulants, the generation of sludge by-products, the inflow load of membranes, and the facility size in comparison with the conventional standard water purification processes.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 17, 2013
    Applicant: DAEWOO E&C CO., LTD.
    Inventors: Eui-Sin LEE, Bum-Goo LEE, Hee-Kyong OH, Jung-Yeol EOM
  • Publication number: 20110000849
    Abstract: The present invention provides a water purification apparatus and method using a pressurized micro-filter preprocessed with a coagulation inclined-plate sedimentation reservoir and a pore-control fiber filter for improvement of a recovery rate, which removes the dissolved organic materials and the turbidity of raw water through a preprocess by a flash mixer, a two-stage coagulation reservoir and an inclined-plate sedimentation reservoir, thereby making it possible to reduce the use of coagulants, the generation of sludge by-products, the inflow load of membranes, and the facility size in comparison with the conventional standard water purification processes.
    Type: Application
    Filed: April 15, 2010
    Publication date: January 6, 2011
    Applicant: DAEWOO E&C CO., LTD.
    Inventors: Eui-Sin LEE, Bum-Goo LEE, Hee-Kyong OH, Jung-Yeol EOM
  • Patent number: 7604733
    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.
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: October 20, 2009
    Assignees: Korea Institute of Construction Technology, Daewoo Engineering & Construction Co., Ltd.
    Inventors: Kwang-Soo Kim, Hee-Ja Lee, I-Tae Kim, Kwang-Ho Ahn, Chai-Sung Gee, Sung-Youn Kim, Ji-Seon Yoo, Eui-Sin Lee, Sung-Pok Paik, Chul-Ki Oh, Kwang-Yoon Lee
  • Publication number: 20090173679
    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.
    Type: Application
    Filed: March 16, 2009
    Publication date: July 9, 2009
    Applicants: KOREA INSTITUTE OF CONTRUCTION TECHNOLOGY, DAEWOO ENGINEERING & CONSTRUCTION CO., LTD.
    Inventors: Kwang-soo Kim, Hee-Ja Lee, I-Tae Kim, Kwang-Ho Ahn, Chai-Sung Gee, Sung-Youn Kim, Ji-Seon Yoo, Eui-Sin Lee, Sung-Pok Paik, Chul-Ki Oh, Kwang-Yoon Lee
  • Patent number: 7520991
    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.
    Type: Grant
    Filed: June 8, 2007
    Date of Patent: April 21, 2009
    Assignees: Korea Institute of Construction Technology, Daewoo Engineering & Construction Co., Ltd.
    Inventors: Kwang-Soo Kim, Hee-Ja Lee, I-Tae Kim, Kwang-Ho Ahn, Chai-Sung Gee, Sung-Youn Kim, Ji-Seon Yoo, Eui-Sin Lee, Sung-Pok Paik, Chul-Ki Oh, Kwang-Yoon Lee
  • Publication number: 20070284305
    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.
    Type: Application
    Filed: June 8, 2007
    Publication date: December 13, 2007
    Applicants: Korea Institute of Construction Technology, Daewoo Engineering & Construction Co., Ltd.
    Inventors: Kwang-Soo Kim, Hee-Ja Lee, I-Tae Kim, Kwang-Ho Ahn, Chai-Sung Gee, Sung-Youn Kim, Ji-Seon Yoo, Eui-Sin Lee, Sung-Pok Paik, Chul-Ki Oh, Kwang-Yoon Lee
  • Patent number: 5935299
    Abstract: A spray dryer/bag filter apparatus for removing flue gas from an incinerator, which is structurized to re-circulate the purified gas as the shield air for protecting the slurry spraying nozzle thermally from hot gas without using any additional blower to introduce external air, that the flue gas is not diluted.
    Type: Grant
    Filed: September 4, 1997
    Date of Patent: August 10, 1999
    Assignee: Daewoo Corporation
    Inventors: Chil-Lim Park, Eui Sin Lee, Byung-Hwan Kim, Gi-Ho Park, Hee Jin In