Device and method for destroying water temperature layering by internal waves generated by aeration induction in layered lake reservoir

Abstract

The invention discloses a device and a method for destroying water temperature layering by internal waves generated by aeration induction in a layered lake reservoir. According to the device and method, a temperature controller is used for controlling starting and stopping an external air conditioner and accurately adjusting and controlling the temperature of water in a model reservoir, and further the water body at the bottom in the model reservoir is cooled by using an air-conditioning condensing pipe; meanwhile, an air compressor is used for conveying air to an air inlet of an aerator, and then conveying the air to an aeration chamber through diffusion holes of the aerator; when undissolved residual gas is gradually accumulated to the lower edge of a water sealing plate of the aeration chamber, gas in the aeration chamber can rapidly spill to an ascending barrel in the middle and carry the water body at the bottom to ascend; meanwhile, gas in the aeration chamber is accumulated again, and thus a periodic ascending water flow is formed in the ascending barrel; an outlet of the aerator is formed in a thermocline with temperature gradient, the water flow periodically flowing out from the outlet of the aerator can serve as an interference source which induces to generate internal waves in the model reservoir, and the water temperature layering can be efficiently destroyed by using the powerful mixing effect of the internal waves.

Description

【Technical field】 [0001] The invention belongs to the field of water body pollution control of lakes and reservoirs, and in particular relates to a device and method for aeration-induced generation of internal waves in stratified lakes and reservoirs to destroy water temperature stratification. 【Background technique】 [0002] Lakes and reservoirs with large water depths are prone to water temperature stratification caused by the existence of severe vertical temperature gradients, so that the water body is divided into three water mass layers with different temperatures and densities from top to bottom: the variable temperature layer, the thermocline layer and the isothermal layer. layer. The thermocline in the middle prevents the vertical transfer of heat and oxygen between the surface layer and the bottom layer. As a result, the eutrophication of the water body is accelerated due to the blooming of algae on the surface layer and the release of sediment pollutants in the bot...

AI Technical Summary

Problems solved by technology

[0003] At present, the technologies for destroying water temperature stratification in lakes and reservoirs mainly include water pump mixing, mechanical mixing, air tube oxygenation, and water pumping and aeration. However, the above-mentioned technologies for destroying water temperature stratification have common problems such as low efficiency and high energy consumption.

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