Design of QSB type self-priming submersible jet aerator

Design of QSB type self-priming submersible jet aerator

Principle:

The QSB jet submersible aerator is a direct coupled structure. The rotating impeller generates a centrifugal force in the water, forming a negative pressure zone around the impeller through jet force. Air is sucked in through the intake pipe, and the sucked in air and water mix in the mixing disc. Then, this good and uniform mixture is automatically discharged from the outlet.

This process includes the following aspects: the mixing of air and water in the mixing tray produces a gas-liquid mixing effect, and the gas-liquid mixture discharged from the outlet forms circulation and convection; The high-speed movement of oxygen in a large number of air molecules results in an extremely high oxygen absorption efficiency.

Design of QSB type self-priming submersible jet aerator

1. Jet aerators have strong mixing and stirring effects, high oxygenation capacity, oxygen utilization efficiency, and oxygen power transfer efficiency.

2. Simple in structure, reliable in operation, flexible in operation, easy to adjust, not prone to blockage, and easy to maintain and manage.

3. When using a self-priming jet aerator, the blower can be eliminated to eliminate noise pollution.

4. In the throat of the jet aerator, due to the turbulence and energy exchange of the jet, a violent mixing phenomenon is formed, which not only completes the transfer of oxygen from the gas phase to the liquid phase in an instant (10-2 seconds), but also the working water flow of the jet aerator is a mixture of inflow and reflux sludge or aeration tank mixture. Therefore, mass transfer and biochemical reactions between sludge (microorganisms) - water (organic matter) - gas (dissolved oxygen) rapidly occur in the mixture, which is a comprehensive process of rapid biological reaction and three-phase mass transfer that occurs under specific conditions.

5. The activity of the sludge has been improved, and the degradation constant of the substrate is higher than other activated sludge methods. (6) Short required aeration time, low civil engineering investment, low operating costs, and small footprint.

The submersible aerator uses a motor to directly drive the impeller to rotate and generate centrifugal force, which is close to the low-pressure suction flow rate. At the same time, the impeller inlet also creates vacuum suction air. In the air mixing chamber, the air and water are mixed and quickly discharged under the action of centrifugal force. Due to the extremely strong water jet, the air is divided into many small bubbles. As the bubbles slowly rise, oxygen in the atmosphere is dissolved in the water. Due to the small size of bubbles that cannot be counted and their large surface area, the speed per unit power is higher than other types of aerators.