| 摘要 |
<p>PURPOSE: An advanced sewage and wastewater treatment system using indirectly aerated submerged biofilter is provided to keep the amount of microorganisms to high level by preventing discharge of useful microorganisms and stably supply oxygen to microorganisms by forming lamina flow of fluid through indirect aeration. CONSTITUTION: The advanced sewage and wastewater treatment system comprises first tank(30) comprising submerged medium(7), upper dispersion unit(2), lower dispersion unit(3) and agitator(6); and second tank(40) comprising submerged medium(7), upper dispersion unit(4), lower dispersion unit(5), aeration and diffusion unit(17), inner pipe(10), outer pipe(9) and backwashing unit(18), wherein the inside of the first tank is divided by the upper dispersion unit(2), lower dispersion unit(3), and the submerged medium is filled in a space formed by dividing the first tank, wherein a double pipe is formed in the second tank by the inner pipe and the outer pipe, the aeration and diffusion unit is installed at a lower part of the inner pipe to generate water circulation of lamina flow by air lift inside the double pipe, the inside of the outer pipe is divided by the upper dispersion unit(4) and the lower dispersion unit(5), the submerged medium of the second tank is filled in a space formed by dividing the outer pipe, and the backwashing unit of the second tank is installed on an upper part of the lower dispersion unit(5), and wherein the submerged medium is porous polyurethane.</p> |
