Novel deepwater lake water restoring method through bubble plume dispersion oxygenation

Abstract

The invention discloses a novel deepwater lake water restoring method through bubble plume dispersion oxygenation. In a water stratification period, a plume oxygenation jetting device is arranged at the bottom of a lake, an air source of the plume oxygenation jetting device is pure oxygen, bubbles jetted from the plume oxygenation jetting device and introduced water form air-water mixture, then the air-water mixture ascends to the maximum altitude before thermal stratification while the bubbles are continuously dissolved and disappear, sinking plume is formed due to density difference, oxygen-rich water diffuses all around and enters a distant water environment after the plume sinks to the balance depth, the hypolimnion is directly oxygenated, and the ascending velocity of the air-water mixture is 0.12-0.17m/s. The novel deepwater lake water restoring method through the bubble plume dispersion oxygenation is strong in pertinence; ascending bubbles are rapidly dissolved, the oxygen transfer efficiency is high, the oxygenation effect is good, and the operation difficulty and construction difficulty are greatly simplified; and the novel deepwater lake water restoring method through the bubble plume dispersion oxygenation has the characteristics of no disturbance on the thermal stratification, no damage of a lakebed cold water fish growth environment, high feasibility, low implementation risk and good water restoring effect.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and relates to a treatment technology for water quality deterioration of deep-water lakes, in particular to a method for repairing the water quality of deep-water lakes, improving the perennial anoxic environment in the lower layer of the lake, controlling the release of pollutants such as phosphorus in the lake bottom mud, and controlling the richness of the water body. The oxygenation technology for deep-water lakes with trophic conditions is suitable for deep-water lakes and reservoirs with deep water depth and obvious stratification. Background technique [0002] The algae and other organic matter produced in the surface water of the lake continue to sink to the deep water body. With the degradation of organic matter and other oxygen-consuming processes, the dissolved oxygen content in the lower water body gradually decreases, resulting in an anoxic state in the deep water bod...

AI Technical Summary

Problems solved by technology

In the 1940s, foreign countries began to study the water quality restoration technology of deep-water lakes. In recent years, only scholars in my country have carried out research and exploration on the theory and technology of water quality restoration of deep-water lakes. The theory and technology are still in their infancy.

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