Multi-level two-layer returning water-spreading drop oxygenating method and device

Abstract

The invention discloses a multi-level two-layer returning overflowing drop oxygenating method and device. The method comprises the following steps: fluid overflows from the upper overflowing area of an inclined drop unit to the inclined upper end, returns, overflows to the inclined lower end along the lower bottom surface of the drop unit and falls to the next level of drop unit. The device comprises at least two levels of drop units, wherein each level of drop unit comprises a drop pipe, a drop pipe baffle, an overflow plate, a drop supporting pipe, a drop supporting pipe baffle, a connection articulated rod and the like; and the multi-level drop units are in stair-like distribution and are arranged slantwise, the drop pipe inclines and the upper overflowing area is formed in the drop pipe; and fluid flows through the upper overflowing area to complete upper overflowing, returns at the inclined upper end of the drop pipe, moves along the lower bottom surface of the drop pipe or the upper bottom surface of the drop supporting pipe to complete lower overflowing and falls to the next level of drop unit from the inclined upper end. The device of the invention has the advantages that oxygenating can be performed efficiently, no energy is consumed, the device can not be blocked, the maintenance is convenient and the like, and the device is applicable to the wastewater treatment process in areas with undulating terrain.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, and more specifically, relates to a method and device for oxygenating multi-stage, double-layer circuitous overflow falling water. Background technique [0002] In the sewage treatment process, oxygenation is one of the important links. Methods of oxygenating sewage include mechanical aeration and falling water oxygenation. Mechanical aeration devices are usually used in sewage treatment plants such as cities and towns, which generally require power equipment, consume a lot of power, and have high requirements for operation and management, resulting in high operating costs for sewage treatment. For rural decentralized sewage treatment, the use of falling water aeration can simplify operation, reduce operating energy consumption and treatment costs. However, in the existing cases of using falling water for oxygenation, the effect of direct falling water oxygenation is usually not good, ...

AI Technical Summary

Problems solved by technology

[0003] One of the objectives of the present invention is to provide a multi-stage double-layer circuitous overflow falling water oxygenation method that strengthens the oxygenation effect of the falling water and reduces the energy consumption of sewage treatment. This method can overcome the problems faced by the existing falling water facilities and is reasonable. Drainage and diversion to avoid clogging and reduce odor

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