Water treatment method using floatation

The present invention relates to a water treatment method with minimized installation space, capable of easily removing coagulated flocs to be removed by using microbubbles and coarse bubbles. More specifically, the water treatment method comprises the steps of: 1) supplying treatment water formed i...

Full description

Saved in:
Bibliographic Details
Main Author PARK CHAN GYU
Format Patent
LanguageEnglish
Korean
Published 20.05.2020
Subjects
Online AccessGet full text

Cover

Loading…
More Information
Summary:The present invention relates to a water treatment method with minimized installation space, capable of easily removing coagulated flocs to be removed by using microbubbles and coarse bubbles. More specifically, the water treatment method comprises the steps of: 1) supplying treatment water formed in a flotation tank to a mixer pump into which gas is introduced, to generate dissolved water in which the treatment water and the gas are dissolved; 2) dividing the dissolved water discharged from the mixer pump into a predetermined ratio, and supplying the same to a microbubble supply member and a coarse bubble supply member, to generate microbubbles and coarse bubbles; 3) supplying the generated microbubbles to a coagulated floc reaction unit into which wastewater and a flotation aid consisting of a coagulant and a polymer are introduced, performing mixing in steps to generate coagulated flocs with the microbubbles attached thereto, and supplying the generated coagulated flocs to a flotation reaction unit; and 4) obtaining treatment water, which is purified by removing the coagulated flocs supplied to the flotation reaction unit, accommodating the treatment water separately, and supplying a portion thereof to the mixer pump while discharging the rest out of the flotation reaction unit. In particular, the coarse bubble supply member is installed in a lower part of the flotation reaction unit so as to be able to discharge coarse air bubbles therein, thereby causing the coagulated flocs settling inside the flotation reaction unit to rise. 본 발명은 미세기포와 조대기포를 이용하여 제거하고자 하는 응집플록을 용이하게 제거할 수 있는 설치공간이 최소화된 수처리방법에 관한 것으로, 더욱 상세하게는 1)부상반응조 내부에 형성된 처리수를 기체가 유입되는 믹서펌프에 공급하여 해당 처리수와 기체가 서로 용해된 용해수를 생성하는 단계와, 2)상기 믹서펌프에서 배출되는 용해수를 일정비율로 분할하여 미세기포 공급부재과 조대기포 공급부재에 각각 공급하여 미세기포와 조대기포를 생성하는 단계와, 3)생성된 미세기포를 폐수와 응집제와 폴리머로 이루어진 부상보조제가 유입되는 응집플록 반응부에 공급 후, 단계별로 서로 혼합하여 해당 미세기포가 들러붙은 응집플록을 생성하며, 생성된 상기 응집플록을 부상분리 반응부에 공급하는 단계 및 4)상기 부상분리 반응부에 공급된 상기 응집플록을 제거한 정화가 이루어진 처리수를 획득하며, 해당 처리수를 별도로 수용하여 그 일부는 상기 믹서펌프에 공급하고, 나머지는 상기 부상분리 반응부 외부로 배출하는 단계를 포함하되, 상기 조대기포 공급부재는 상기 부상분리 반응부 하부에 내측으로 조대기포를 배출할 수 있도록 설치되어 상기 부산분이 반응부 내에서 침전되는 상기 응집플록을 부상시키는 것을 특징으로 한다.
Bibliography:Application Number: KR20180137766