Nano-scale bubble sediment repair method and device

Abstract

The invention relates to a nano-scale bubble sediment repair device, the lower part of a nano-bubble generating device is communicated with the lower of the liquid surface of a river channel through aconnecting pipeline; the upper part of the nano-bubble generating device is communicated with a nano-bubble stabilizing device through a water delivery power device; a pressure sensor and a liquid level meter are arranged inside the nano-bubble stabilizing device; the upper part of the nano-bubble stabilizing device is provided with an exhaust port, and the exhaust port is provided with a back pressure exhaust valve and a pressure sensor; the bottom or the side wall of the nano-bubble stabilizing device is provided with a water inlet and a water outlet, the water inlet is provided with a water inlet electromagnetic valve, and the water outlet is provided with a water outlet electromagnetic valve and a flow meter; a control system is in signal connection with the water inlet electromagnetic valve, the water output electromagnetic valve, the flow meter and the back pressure exhaust valve; and the nano-bubble stabilizing device is communicated with a nano-bubble diffusing device which covers the lower surface of sediment or is immersed inside the sediment. The device provided by the invention can continuously deliver nano-scale bubbles into the sediment; and the nano-bubble stabilizing device releases micron-scale bubbles or higher-scale bubbles generated in the micro nano-bubble generating device, thereby greatly reducing the content of the micron-scale bubbles.

Description

technical field [0001] The invention relates to a repair method and device for nano-scale bubble bottom mud, belonging to the technical field of pond bottom mud repair. Background technique [0002] Nanoscale bubbles refer to bubbles with a size smaller than 1 micron. The existence of nanobubbles has been proved in many ways, and their residence time in water can exceed hundreds of hours, which is a hot research topic in the field of interface physics and other fields. The eutrophication of natural and artificial water bodies and the problem of black and odorous rivers have become serious problems in my country's water environment pollution, and have become the primary solution goals for the country to improve the ecological environment in recent years. The main reason for the black and odorous water body is that the external source pollution has remained high for a long time, the self-purification ability of the water body has been lost, the dissolved oxygen is low, the tr...

AI Technical Summary

Problems solved by technology

The main reason for the black and odorous water body is that external source pollution has remained high for a long time, the self-purification ability of the water body has been lost, the dissolved oxygen is low, the transparency of the water body is low, and the sediment anaerobic causes black odor

In the existing black and odorous water body treatment process, dredging and dredging of sediment is the first step of the process, which consumes astonishing manpower and material resources, accounting for more than 50% of the entire treatment cost. The treatment organization is also a great burden; in addition, because it is difficult to ensure the complete elimination of external source pollution for a long time, it can only last for 3-5 years, or even less than a year, which will inevitably lead to repeated investment and repeated investment. vicious cycle of governance

However, in order to achieve the purpose of increasing the specific surface area, the main function of the micron-sized bubbles formed in this process is to add oxygen to the water body. The entire formation process is located in the water body above the bottom mud layer, and the concentration of nano-bubbles formed in this process Therefore, it is difficult to effectively use the high permeability effect of high-concentration nano-bubble water to provide deep-level oxygen supply to the sediment

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