Bag type spiral-wound combined bubble-free aeration device

Abstract

The invention discloses a bag type spiral-wound combined bubble-free aeration device, which comprises a double-layer bag type air hypertonic biofilm, wherein an air intake pipe and an air outlet pipeare arranged at the front end and the rear end of the double-layer bag type air hypertonic biofilm in a closed manner, the double-layer bag type air hypertonic biofilm is further provided with a support plate through which the device is integrally wound to be of a spiral shape, and the positions of the air intake pipe and the air outlet pipe are correspondingly provided with an air inlet and an air outlet. The bubble-free aeration device is provided with the novel high-strength and one-way air selective hypertonic film to improve the high-efficiency permeability of air into a water body on theother side, so as to ensure the aeration amount while saving the land occupied and satisfying actual use requirements.

Description

technical field [0001] The invention relates to a bag-type spiral-wound combined non-bubble aeration device, which belongs to the technical field of aerated biofilms. Background technique [0002] Bubble-free aerated biofilm reactors generally use multiple bundles of hollow fibers to form a bundle, the upper and lower ends are fixed, and the fixed end is connected to the inlet and outlet exhaust pipes. The advantage of this form of bubble-free aeration is that it has a larger contact surface with the water body and gas exchange The frequency is high; the disadvantage is that the gap is small, the biofilm formed on the membrane is easy to block, and the hollow fiber bundle has a small aperture and a large number, resulting in large resistance, so a large wind pressure is required, and the device needs to be equipped with a large wind pressure fan , High energy consumption. For this reason, aiming at the problems existing in the prior art, it is necessary to design a new tech...

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Problems solved by technology

[0002] Bubble-free aerated biofilm reactors generally use multiple bundles of hollow fibers to form a bundle, the upper and lower ends are fixed, and the fixed end is connected to the inlet and outlet exhaust pipes. The advantage of this form of bubble-free aeration is that it has a larger contact surface with the water body and gas exchange The frequency is high; the disadvantage is that the gap is small, the biofilm formed on the membrane is easy to block, and the hollow fiber bundle has a small aperture and a large number, resulting in large resistance, so a large wind pressure is required, and the device needs to be equipped with a large wind pressure fan , high energy consumption

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