Submersible fan

Self-priming submersible aeration pump

QXB15-100 Centrifugal Aeration Machine

Duwan Environmental ProtectionQXBTypeKey components material of潜水曝气机:

Motor housing:Cast Iron,250

Blade Wheel:Stainless Steel1.4571(AISI316Ti)

Impeller shaft:Stainless Steel1.4021(AISI420)

Mechanical Seal:Internal/External Corrosion Resistance Sintered Tungsten Carbide, WC/Corrosion-resistant

Bolts, nuts, washers, stainless steelAISI316

Guide rod:AISI304Stainless Steel

Bracket:AISI304Stainless Steel

TieLead Rope:Stainless SteelAISI316

Jiangsu Du'an Environmental ProtectionQXBTypeDiving Aerator Working Principle:

　　1Unique mixing chamber design with high air intake and excellent mixing, achieving high oxygen utilization rate.;

　　2The gas-water mixture is discharged from the mixing chamber at a special angle, allowing the water to flow in a spiral pattern horizontally and then upwards, providing aeration while also acting as a stirrer.;

　　3The body operates submerged in water, producing no noise. A silencer can be installed on the intake pipe above the water surface to enhance the soundproofing effect.

What are the characteristics of aeration equipment?

With the in-depth research and extensive application of wastewater treatment technology, aeration equipment for wastewater treatment has gradually developed. The aeration device includes at least one buoyant body, a set of aeration devices, and a control unit. The aeration equipment assembly is mounted on the buoyant body, offering a choice of aeration devices, and directing water to at least one selected area for spraying, fogging, or aeration. The controller can exert a top thrust to promote the movement of the aeration equipment towards the top. The controller also manages the aeration equipment to generate a secondary thrust, facilitating movement in two directions.

Aeration equipment is mainly categorized into the following types: disk aeration blowers, aeration brushes, vertical surface aeration machines, suction aeration machines, microporous aeration plates, and microporous aeration devices.

Characteristics of various aeration equipment:

Aeration Activated Sludge Process in the Application of Aerobic Biological Treatment of Urban and Industrial Wastewater. Features include high efficiency, high oxygen utilization rate, and optimized aeration time.

　　(1)Aeration Disc: A disc assembly for wastewater biochemical treatment aeration equipment, featuring multiple fan blades. The outer disc is fitted with a boss, and between the boss and the surrounding disc, there is a depression that allows for the propagation of air. The surrounding disc provides multiple blades, which enhance the water push flow effect of the aeration disc and can significantly increase the power for treatment, allowing for an increased water depth of5.5Under the principle of equality, rice can effectively reduce the area of the wastewater pond, saving funds.

　　(2)Aeration Rotating Brush: The aeration rotating brush is controlled by a variable frequency drive, with its speed adjustable. This results in an optimal match of oxygen and oxygen demand in the oxidation ditch, ensuring water quality while significantly reducing energy consumption. It demonstrates the feasibility and necessity of variable frequency speed control. This article introduces three control methods suitable for the automatic control of the system.

Stainless Steel Submersible Aerator ImpellerStainless steel impeller features include::

Impeller usedCFDHydraulic analysis and design ensure the mixer's high efficiency and energy-saving operation.

The impeller anti-tangle design completely resolves issues such as motor damage and short mechanical seal lifespan caused by entanglement.

Hydraulic balance3The propeller blades are made of stainless steel, ensuring smooth operation of the impeller.

The impeller surface undergoes a special hardening treatment, ensuring a longer service life for the impeller.

Jiangsu Du'an Environmental Protection Submersible Aeration Cable Specialized Waterproof Cable

Brand/Model: Jiangsu Shangshang Cable/YZW3*2.5+2*1.5

Voltage Grade:350V-550V

Insulating Materials: Rubber Insulated Power Cables

Number of cores:5

Equipment Brand: Jiangsu Du'an

Model:YZW3*2.5+2*1.5

Conductor Material: Copper Wire

Application: Diving Cable

CableLarge Outer Diameter:28（mm）mm

Insulation Thickness:10（mm）mm

Nominal Section Area:2.5（mm2）mm2

   The impeller of Duwan Environmental Protection Submersible Centrifugal Aerator reduces the axial force to a low degree, and the effective impeller is statically and dynamically balanced, ensuring the overall machine runs smoothly. Without the need for any vibration damping devices, the bearing amplitude remains unaffected by spatial conditions. It can increase dissolved oxygen in water within a shorter period, effectively reducing pollution indices such as organic matter and ammonia nitrogen in the water body. It has earlier met the oxygen supply needs of water bodies. Additionally, its superior thrust during operation allows the Duwan Environmental Protection QXB Submersible Centrifugal Aerator to achieve an aesthetically pleasing wave-making effect. It ensures that the vast majority of oxygen is fully dissolved in water. Meanwhile, under the action of jet fluid pressure, the jet carries oxygen molecules and small bubbles, which are emitted and diffused at an angle downward from the nozzle of the diffuser. After impacting and stirring the sediment at the bottom of the biochemical pool, they slowly rise to the water surface. The small bubbles generally remain in the water for a long time.30Over one second, allowing the oxygen in the air to be fully dissolved and absorbed, enhancing oxygen transfer efficiency and oxygenation capacity.

Increased bubble count enhances the specific surface area of bubbles, also thinning the gas-liquid film, significantly reducing mass transfer resistance, and allowing oxygen molecules to transfer more effectively from the gas phase to the liquid phase. Under the high-speed rotation within the disperser, with a high angular velocity, the jet acquires strong penetration, allowing micro-bubbles to travel far in the water, enhancing mixing, flow propulsion, and aeration capacity. Negative pressure around the nozzle draws in air through the intake tube, mixes with the water flow in the mixing chamber, and produces a water-air mixture flow in the trumpet-shaped diffuser,喷射 out at high speed, carrying many bubbles. The water flow, swirling and churning in a larger area and depth, completes aeration, and its shaft power does not vary with submersion depth, while the air intake volume can be adjusted. The Duwan Environmental Centrifugal Submerged Aerator can be applied in pools with significant water level fluctuations. Due to the strong water jet, an effective convective cycle is created, dividing the air into numerous tiny bubbles. And due to the slow rise of bubbles, oxygen from the atmosphere dissolves into the water. Because the bubbles are all tiny and countless, their surface area is vast.