Oxygenation type in-situ water quality improvement device and method for river water environment restoration

Abstract

Belonging to the technical field of river restoration, the invention discloses an oxygenation type in-situ water quality improvement device and method for river water environment restoration. The device mainly comprises a water quality improvement box, a negative pressure oxygenation component, a submersible pump, an intelligent control component and a power supply. Water in a river channel can bepumped into the water quality improvement box on the surface layer of the water through the negative pressure oxygenation component for oxygenation treatment, and the problem of high energy consumption due to the fact that existing aeration oxygenation can only be conducted at the water bottom of the river channel and needs a large air compressor to provide high-pressure air pressure is solved. The interior of the water quality improvement box is divided into the multiple negative pressure cavities, and the upper end of each negative pressure cavity is provided with a negative pressure suction sleeve, negative pressure is generated in corresponding negative pressure cavities through the multiple negative pressure suction sleeves, and compared with the mode that negative pressure is generated in the whole water quality improvement box, the efficiency of negative pressure generation by the sub-cavities is higher, and the working efficiency is higher.

Description

technical field [0001] The invention belongs to the technical field of river course restoration, and in particular relates to an oxygenation type in-situ water quality improvement device and method for river course water environment restoration. Background technique [0002] With the acceleration of the urbanization process, the pollution of urban life has increased significantly, which has brought great challenges to the protection of urban water environment, especially in the Jiangnan plain river network gate control water body area, the urban Duantou River and cecum rivers are generally polluted due to long-term retention of river water The problem is that river pollution is mainly caused by the intrusion of pollution sources, such as natural rainfall, dust in the atmosphere, intrusion of domestic garbage, long-term accumulation of river bottom silt and harmful substances released by silt. In addition, the water body lacks the necessary circulation, the dissolved oxygen i...

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Problems solved by technology

In addition, the water body lacks the necessary circulation, the dissolved oxygen is too low, and the environment for aquatic animals and plants is lacking, so that the water body gradually loses its self-purification ability. In addition, the river sediment has not been cleared for a long time, so that the sediment is continuously released and decomposed into nutrients such as N and P. Salt leads to eutrophication of the water body, the water body gradually turns green, and the algae grows wildly, which eventually leads to the phenomenon of "algae bloom", which produces peculiar smell, is easy to turn black and smelly, and seriously affects the overall water environment of the city

[0003] The above-mentioned problems can be solved by increasing the dissolved oxygen of the water body by adding oxygen to the river water body. The existing oxygenated water body purification device is mainly to oxygenate the bottom water body, which only has a mixing function and does not oxygenate the water body. Existing oxygenated in-situ water quality improvement devices tend to float with the direction of water flow and cannot be fixed. If the water flow is seriously polluted in a certain place, the water quality improvement device cannot be fixed there for a long time to purify the water body for a long time, resulting in a decrease in purification efficiency , and the floating direction of the water quality improvement device is random, and it is impossible to locate and navigate; oxygenation can only be carried out at the bottom of the river, and a large air compressor is required to provide high-pressure air pressure, resulting in high energy consumption, and when the device is at the bottom, maintenance is difficult. increase staff workload

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