A Black and Odor River Restoration Process and Air Distribution Device for Reducing Odor Dispersion

Abstract

The invention discloses a black and odorous river channel repair technology for reducing odor dissipation and a gas distribution device. The process includes the following steps of firstly, putting an agent in overlying water of a black and odorous river channel to reduce the odor concentration in the overlying water of the black and odorous river channel; secondly, dispersing nanometer bubbles in bottom mud of the black and odorous river channel. The gas distribution device comprises a nanometer bubble machine, and a gas distribution pipe horizontally suspended above the bottom mud of the black and odorous river channel. The inlet of the gas distribution pipe is communicated to the nanometer bubble machine. A plurality of aeration seams are formed in the bottom face of the gas distribution pipe. The odor concentration in the black and odorous river channel is reduced first, and gas distribution is conducted in the bottom mud through the nanometer bubble machine and the specific gas distribution pipe; because the grain size of bubbles generated by the nanometer bubble machine is very small, almost no disturbance is caused to a water body, the generated bubbles can be attached to the surface of the bottom mud, and the oxygen mass transfer rate is high; meanwhile, in-situ oxidation repair of the bottom mud can be greatly accelerated through the hydrodynamic cavitation effect and the like generated when the bubbles are broken, and almost no odor is generated.

Description

technical field [0001] The invention belongs to the field of ecological restoration of water environment treatment, and in particular relates to a black and odorous river restoration process for reducing the emission of odor. Background technique [0002] The large increase in value of some algae in eutrophic waters leads to a decrease in the intensity of underwater light. After the excessive consumption of dissolved oxygen, the algae die and rot rapidly, and at the same time cause imbalances at all levels of the water ecosystem, and finally collapse. The water quality continues to deteriorate, including Ammonia and hydrogen sulfide released from the degradation of organic matter such as sulfur and nitrogen make the water smelly, and the substances that cause the water to turn black are mainly insoluble substances such as iron sulfide and manganese sulfide. [0003] With the improvement of people's material living standards and the enhancement of environmental awareness, the...

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Problems solved by technology

[0006] However, the aeration process will accelerate the release of odorous substances in the black and odorous river water, which will have a significant impact on the health and living environment of nearby residents.

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