Moving bed biofilm reactor

A moving bed biofilm reactor, applied to process a fluid, comprising:

• a tank body, including a cylindrical tank shell with a water outlet and a gas outlet, a tank bottom disposed at a bottom end of the tank shell, and a tank top disposed at a top end of the tank shell, having thereinside a space;
• a first tube, having a plurality of first holes radially penetrating through the first tube, a first axis of the first tube being parallel to a water level and penetrating through the tank body, the plurality of first holes disposed inside the tank body being to guide the fluid from an exterior of the tank body into the tank body, a center of each of the plurality of first holes being equal to or lower than a horizontal level at the first axis of the first tube, an axial end of the first tube inside the tank body being a sealed end;
• at least one second tube, having a plurality of second holes radially penetrating through the second tube, a second axis of the at least one second tube being parallel to the water level and penetrating through the tank body, the plurality of second holes disposed inside the tank body, the at least one second tube being disposed above the first tube by a distance, a center of each of the plurality of second holes being equal to or lower than a horizontal level of the second axis of the at least one second tube, an axial end of the at least one second tube inside the tank body being a sealed end;
• a first guiding structure, disposed inside the tank body, including:
• a first separator, shaped as a plate, having a bottom surface facing the at least one second tube, furnished with at least one first guide hole and a plurality of first separation holes;
• a first vertical plate, disposed on a top surface of the first separator, having oppositely a first surface and a second surface facing respective inner lateral walls of the tank shell, the first guide hole and the plurality of first separation holes being disposed at the first vertical plate in a side thereof having the first surface, a distance between the at least one first guide hole and the first vertical plate being greater than another distance between any of the plurality of first separation holes and the first vertical plate;
• at least one first guide tube, having a plurality of third holes, a top end connected with the at least one first guide hole, and a bottom sealed end;
• and
• a first baffle, shaped as a plate, having a top surface facing the at least one first guide tube and being located below the at least one first guide tube by a distance, and a bottom surface being located above the at least one second tube by a distance;
• a second guiding structure, disposed inside the tank body above the first guiding structure, including:
• a second separator, shaped as a plate, having a bottom surface facing down a top surface of the first separator by a distance, the bottom surface being separated to the top surface of the first vertical plate by a distance, furnished with at least one second guide hole and a plurality of second separation holes by penetrating vertically through the second separator;
• a second vertical plate, disposed on a top surface of the second separator, having oppositely a third surface and a fourth surface facing respective inner lateral walls of the tank shell, the third surface facing the water outlet, the second vertical plate having a through hole extending from the third surface to the fourth surface, the at least one second guide hole being located in a side of the second vertical plate having the third surface, the plurality of second separation holes being located in another side thereof having the fourth surface, a vertical projection of the at least one second guide hole being overlapped onto that of the at least one first guide hole, a top end of the second vertical plate being connected with the tank top, a water-out space being defined by the second separator, the third surface, the tank top and the tank shell, the water-out space being connected spatially with the water outlet, a gas-out space being defined by the second separator, the fourth surface, the tank top and the tank shell;
• at least one second guide tube, having a plurality of third holes radially penetrating through the second guide tube, an axis of the at least one second guide tube being disposed on the bottom surface of the second separator by being perpendicular to the water level, a top end of the at least one second guide tube being connected with the at least one second guide hole, the at least one second guide tube having an axial sealed end;
• and
• a second baffle, shaped as a plate, having a top surface facing the at least one second guide tube and being located below the at least one second guide tube by a distance, and a bottom surface being separated to a top surface of the first separator by a distance;
• and
• a return pipe, disposed exterior to the tank body to connect a space between the second surface of the first vertical plate and the adjacent tank shell, the first tube and the second tube, such that the fluid in the space can be flowed back into the first tube and the second tube.