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Device and method for automatic wind-power sewage aeration

An aeration device and automatic technology, applied in water aeration, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problem of high energy consumption, achieve low energy consumption, high wind energy utilization rate, and simple structure reasonable effect

Inactive Publication Date: 2009-09-30
OCEAN UNIV OF CHINA
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Problems solved by technology

[0004] The purpose of the present invention is to provide an automatic aeration method and device powered by wind energy—a method and device for automatic aeration of water body by wind force, so as to solve the defect of high energy consumption in the existing aeration method

Method used

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  • Device and method for automatic wind-power sewage aeration

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Embodiment 1

[0019] Make a set of above-mentioned wind power aeration device, it is characterized in that: the length of wind blade is 50cm, and the area of ​​each wind blade is 750cm, totally 3 blades. The volume of the air compression device is 20L. Use it to aerate the activated sludge sewage treatment plant with a volume of 1m3. When the wind speed is 3.2m / s (secondary wind), the aeration volume of the device is 60L / min. When the wind speed is 9.0m / s (five-level wind), the aeration volume of the device is 140L / min.

[0020] The dissolved oxygen concentration in the sewage without aeration is 2.4mg / L. Using this device for aeration, when the wind speed is 3.2m / s (secondary wind), the dissolved oxygen in the sewage increases to 4.1mg / L; when the wind speed is 9.0m / s (fifth wind), the dissolved oxygen in the sewage Oxygen increased to 8.1mg / L (basically saturated), and obvious bubbles emerged from the water surface. Correspondingly, the removal rates of chemical oxygen demand (COD), t...

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Abstract

The invention relates to a device and method for automatic wind-power sewage aeration, which comprise a wind blade, a transmission rod, an air compressor, a pipeline and aeration heads, the upper end of the transmission rod is connected with a rotary shaft of the wind blade, the lower end of the transmission rod is connected with the air compressor, the other end of the pipeline connected with the air outlet of the air compressor is provided with the aeration heads, and the aeration heads are uniformly placed into the bottom water body of a sewage tank. According to the sewage volume, the pipeline can be provided with a plurality of branches, and every branch is provided with one mircopore aeration head. When the wind blade rotates, the air enters the sewage in a micro-air bubble mode, and the dissolved oxygen density of the sewage is increased. The invention does not need to be provided with a wind-direction device and a speed limiter, has simple and reasonable structure, low manufacturing, installing and maintenance expenditure and high wind-power using rate, and effectively realizes aeration and increases the amount of the dissolved oxygen in the water body to reach the sewage processing effect. The method for aeration, which uses the wind power as power greatly reduces the energy consumption in the sewage processing process, and meets the national requirements of energy saving and discharge reduction.

Description

technical field [0001] The invention belongs to a method for increasing dissolved oxygen in sewage in the field of sewage treatment, and in particular relates to a method and a device for automatic wind aeration. Background technique [0002] The existing aerobic sewage treatment process is the most frequently used treatment method in sewage treatment. In order to maintain the dissolved oxygen concentration in the reactor, a certain method must be used to supply oxygen to the reactor, which is commonly called aeration. At present, there are two commonly used aeration methods: blast aeration and mechanical aeration. Both of these methods use electric energy as the power to drive some mechanical rotation, and transport air or oxygen into the water in the form of bubbles. The oxygen in the tiny bubbles dissolves into the water through the water-air interface, thereby increasing the concentration of dissolved oxygen in the water. There are also some aeration devices that throw ...

Claims

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Application Information

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IPC IPC(8): C02F7/00
CPCY02W10/10Y02W10/33
Inventor 李锋民郑浩王震宇
Owner OCEAN UNIV OF CHINA
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