Aeration nozzle for sewage treatment

Abstract

The invention relates to the field of sewage treatment, in particular to an aeration nozzle for sewage treatment. The aeration nozzle has an annular flange-shaped pedestal, a gas-supply jet pipe and a gas-liquid mixing guide pipe, wherein the pedestal is provided with a support bracket; the gas-liquid mixture guide pipe is fixed on the support bracket; the gas-supply jet pipe is arranged in the guide pipe and the nozzle of the gas-supply jet pipe extends out of the guide pipe in the radial direction; the gas-liquid mixture guide pipe is of an inverse waist drum type and unfolds after gradually shrinking from the top to the bottom; the ratio of the lower opening to the upper opening of the guide pipe is 3:1; a gas-supply nozzle is of an annular structure made of a hollow pipe with the diameter of 25mm; and the nozzle of the gas-supply jet pipe is a gas nozzle with the diameter of 2mm and is arranged on the surface of the gas-supply jet pipe. The aeration nozzle prevents sediment from silting and settling at the bottom, increases oxygen dissolved in water, enlarges gas-liquid contact area, and quickens the dissolution of gas in the water.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to an aeration nozzle for sewage treatment. Background technique [0002] With the continuous improvement of sewage treatment technology, various sewage treatment equipment are emerging. In particular, the aeration device in the treatment system is constantly updated, but the aeration pan, aeration head and aeration hose used in the commonly used aeration facilities have problems such as large gas loss, high back pressure, Easy to block and other disadvantages. It is generally used for vertical aeration of the whole tank, and the bubbles gradually increase during the vertical ascent process, which cannot achieve a high-efficiency combination of the two phases. In addition, the vertical distance is short, and most of the bubbles cannot stay in the sewage and rush out of the water surface quickly, resulting in Reactive waste of gas. Especially when the pipeline is used for gas-liqui...

AI Technical Summary

Problems solved by technology

In particular, the aeration device in the treatment system is constantly updated, but the aeration pan, aeration head and aeration hose used in the commonly used aeration facilities have problems such as large gas loss, high back pressure, Easy to block and other disadvantages

It is generally used for vertical aeration of the whole tank, and the bubbles gradually increase during the vertical ascent process, which cannot achieve a high-efficiency combination of the two phases. In addition, the vertical distance is short, and most of the bubbles cannot stay in the sewage and rush out of the water surface quickly, resulting in Reactive waste of gas

Especially when the pipeline is used for gas-liquid two-phase mixing, the aeration effect cannot be achieved at all.

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