In-situ mechanical mixing nitrogen-supply integrated lake reservoir water quality improving device

Abstract

The invention discloses an in-situ mechanical mixing nitrogen-supply integrated lake reservoir water quality improving device which comprises rising barrel devices, a discharge barrel device, a venturi gas inlet device and a motor driving device, wherein blades are driven through the motor to rotate to generate an upward lifting force, then water at the bottom sequentially flows through the rising barrel at the lower part, the rising barrel in the middle part, a reduced tube, an aeration chamber and an effluent barrel device, so as to mix the water on the upper layer and the lower layer of a lake reservoir; a certain negative pressure is generated because of rapid flowing velocity at the reduced tube, because of the venturi principle, air is sequentially sucked into the reduced tube through the air inlet tube and flexible hoses, and enters the aeration chamber together with the water flow from the rising barrels; the water supplied with oxygen enters the external water body through the discharge device of the discharge barrel. According to the in-situ mechanical mixing nitrogen-supply integrated lake reservoir water quality improving device disclosed by the invention, key and significant units for supplying and mixing nitrogen are arranged on the surface layer of the water body, and no complex gas supply equipment or underwater pipeline system is used, so that the device is convenient to use and maintain, and the investment and operation cost in improving the water quality in situ is lowered.

Description

【Technical field】 [0001] The invention belongs to the field of water quality pollution control of lakes and reservoirs, and specifically relates to an in-situ water quality improvement device for lakes and reservoirs integrated with mechanical mixing and oxygenation, which is suitable for layered lakes and reservoirs with large mixing water depth, and oxygenates the water body to control the water quality in the water body. source pollution and eutrophication. 【Background technique】 [0002] Lakes and reservoirs are the most precious fresh water resources that can be directly used in the world. Among them, reservoirs are gradually becoming the main water supply source for most cities, and the importance of water source reservoirs is becoming increasingly prominent. At present, the eutrophication problem of lakes and reservoirs is very prominent. The deterioration of water quality in lakes and reservoirs directly affects the sustainable use of urban water resources, and even ...

AI Technical Summary

Problems solved by technology

But despite this, the current aeration mixed oxygenation technology is to perform aeration and oxygenation at the bottom of lakes and reservoirs, and at the same time use gas to lift the water body for mixing. Since the air supply pressure must be greater than the water depth, the energy demand for the hybrid oxygenation system is very large. , need a large air compressor, and high energy consumption, low energy efficiency (generally below 10%), in addition to difficult installation and maintenance underwater

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