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Blast aeration device for sewage treatment

A blast aeration device and sewage treatment technology, which is applied in the direction of aerobic process treatment and sustainable biological treatment, can solve the problems of low oxygen utilization rate and uneven distribution of oxygen concentration gradient, and achieve the effect of improving efficiency and power efficiency

Inactive Publication Date: 2019-09-24
上海明诺环境科技有限公司
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AI Technical Summary

Problems solved by technology

The main disadvantage is that the water area from the top of the aeration device to the water surface is always in a state of supersaturated oxygenation, while other waters are in a state of unsaturated oxygenation, the distribution of oxygen concentration gradient is uneven, and the oxygen utilization rate is relatively low, which is prone to local "dead water areas"

Method used

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  • Blast aeration device for sewage treatment

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Effect test

Embodiment 1

[0014] Example 1 Treatment of high-concentration refractory organic chemical wastewater

[0015] As shown in Figure 1, the device is composed of jet aspirator 1, diffuser pipe 2, swirl aerator 3, descending diffuser pipe 4 and swirl aerator 5, among which: jet aspirator 1 adopts blast positive Pressure jet aspirator. The top of the jet aspirator 3 is connected to the water inlet pipe 1, and one side is connected to the blast air inlet pipe 2. The waste water is mixed with the air in the jet aspirator 3 through the water inlet pipe 1 and the air in the blast air inlet pipe 2. The output end of the jet aspirator 3 is connected to the input end of the diffusion pipe 4, the output end of the diffusion pipe 4 is connected to the input end of the swirl aerator 5, and the output end of the swirl aerator 5 is connected to the sewage treatment reactor. The air passing through the water inlet pipe 1 and the blast air inlet pipe 2 realizes the mixing of waste water and air in the jet as...

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Abstract

The invention relates to a blast aeration device for sewage treatment. The device is mainly composed of a water inlet pipe, a blast air inlet pipe, a jet flow suction device, a descending diffusion pipe and a swirling flow aerator. The blast aeration device mainly involves that waste water passes through the water inlet pipe, and is mixed with air of the blast air inlet pipe, and a mixture is conveyed to the descending diffusion pipe through the jet flow suction device and mixed with waste water contained in a reactor through the swirling flow aerator. Compared with the prior art, the blast aeration device for sewage treatment has the advantages that three phases of gas, water and sludge can be strongly mixed, the power efficiency of an aerobic reaction is greatly improved, and the oxygen utilization efficiency can be up to 4 kgO2 / kwh.

Description

technical field [0001] The invention relates to a blast aeration device for sewage treatment, in particular to the aerobic activated sludge water treatment process. Background technique [0002] Aerobic treatment is a common method for treating sewage. It is mainly a biochemical process in which organic matter is degraded and converted into humus-like substances under the conditions of suitable carbon-nitrogen ratio, water content and oxygen with the participation of microorganisms. Aerobic treatment technology is considered to be an effective method for organic solid waste treatment because it can achieve the treatment goals of solid waste reduction, harmlessness and resource utilization. [0003] The aeration system is an important part of the biological contact oxidation process, which can directly affect the biological treatment efficiency of the system through the activity of the biofilm on the filler, and the power consumption of the biochemical tank is determined by t...

Claims

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Application Information

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IPC IPC(8): C02F3/02
CPCC02F3/02Y02W10/10
Inventor 章明郑勇程琼周佳雯夏风
Owner 上海明诺环境科技有限公司