Business Scope of Jiangsu Du'an Environmental Protection: Research, development, production, sales, installation, service, and maintenance of pumps, water treatment complete equipment, environmental protection equipment, mechanical parts, electrical control equipment, valves, high and low voltage switchgear; technical consulting services for water treatment equipment; water supply and drainage engineering design; environmental protection engineering construction; chemical product sales; import and export business of various commodity technologies. (Projects subject to approval by law must be approved by relevant departments before business activities can be carried out.)

Main Application Scope of QXB Submersible Centrifugal Aerator:

1. Deep water aeration;

2. Aeration and mixing in SBR biochemical tanks;

3. Nitrification or denitrification biochemical aeration and mixing;

4. Sludge aeration and mixing;

5. High organic wastewater treatment processes.

Features of QXB Centrifugal Aerator:

1. Compact structure, small footprint;

2. Open structure, no clogging;

3. High transmission efficiency, soft mixing uniform;

4. Low gas pressure loss, low energy consumption;

5. Adjustable air intake according to process requirements;

6. Comprehensive motor protection functions, reliable sealing, easy to achieve automatic control;

7. Simple and convenient installation, maintenance, and servicing.

Product Use of QXB Submersible Centrifugal Aerator:  

Application of Centrifugal Aerator The QXB centrifugal submersible aerator is used in aeration tanks and aeration grit chambers of sewage treatment plants for oxygenating and mixing mixed liquor, as well as for biochemical treatment of sewage or oxygenation in aquaculture ponds.

Selection Guide for Submersible Centrifugal Aerator:

It is recommended to consider factors such as liquid delivery volume, head, liquid properties, pipeline layout, and operating conditions.

1. Flow rate is one of the important performance data for selecting a centrifugal aerator, directly related to the production and delivery capacity of the entire system. If the design process can calculate the normal, minimum, and maximum flow rates for the centrifugal aerator. When selecting a centrifugal aerator, base the selection on the flow rate, taking into account the normal flow rate; if there is no maximum flow rate, typically 1.1 times the normal flow rate can be taken as the maximum flow rate.    

2. Head is another important performance data for selecting a centrifugal aerator; generally, select the model based on the head with a 5%–10% margin.   

3. Liquid properties, including the name of the liquid medium, physical properties, chemical properties, and other characteristics. Physical properties include temperature °C, density d, viscosity u, diameter of solid particles in the medium, and gas content, which relate to the system head, calculation of effective NPSH, and selection of the appropriate pump type. Chemical properties mainly refer to the chemical corrosiveness and toxicity of the liquid medium, which are important bases for selecting pump materials and the type of shaft seal.    

4. Pipeline layout conditions refer to data such as liquid delivery height, delivery distance, delivery direction, the lowest liquid level on the suction side, discharge side liquid level, as well as pipeline specifications, length, material, pipe fitting specifications, and quantity, to calculate the system head and verify NPSH.   

5. Operating conditions include many factors, such as the operating T of the liquid, saturated vapor pressure P, suction side pressure PS, discharge side container pressure PZ, altitude, ambient temperature, whether the operation is intermittent or continuous, and whether the pump position is fixed or movable. 

After-Sales Instructions of Du'an Environmental Protection Equipment (Jiangsu) Co., Ltd.:

1. Logistics and Freight Instructions

Submersible sewage pumps, submersible mixers, etc., are heavy goods. Products under 50KG can be delivered by express in Jiangsu, Zhejiang, and Shanghai; for items over 50KG, logistics must be used. Comprehensive protectors, leakage protectors, and thermal protectors are delivered by express to your door.

We cooperate with dozens of reputable logistics companies and will select the one with fast speed and favorable prices for you.

Freight can be prepaid or paid upon delivery, and this will be clarified before quotation.

2. Online Ordering

Our company strongly develops online business. You are welcome to place orders online, which provides dual protection: both contract constraints and payment confirmation guarantees.

3. Maintenance and Servicing

All our products come with a one-year warranty. For quality issues within 3 months, the seller bears the round-trip repair freight; for quality issues within one year, both parties share half of the freight. Please note. If, after inspection, it is not a quality issue, the buyer needs to pay the repair cost and round-trip freight. For replaced parts, we promise to charge only the cost. We provide lifetime maintenance.

4. Taxes

We are a general taxpayer and can issue 13% VAT invoices as required by the contract. They will be express delivered to the customer before the 25th of each month. Please rest assured.

Jiangsu Du'an Environmental Protection Submersible Aerators come in various models:

QXB0.75KW  QXB1.5KW QXB2.2KW  QXB3.0KW QXB4.0KW  QXB5.5KW 

QXB7.5KW  QXB10KW QXB11KW  QXB15KW QXB18.5KW  QXB22KW 

Or customized according to customer requirements.

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