Low Speed Submersible Thruster with Polyurethane Blades for Oxidation Ditch Sewage Treatment

Low Speed Submersible Thruster with Polyurethane Blades for Oxidation Ditch Sewage Treatment

Brief Description

QJB low speed submersible thruster is equipped with large curved polyurethane two-blade impeller. Running at low rotating speed with big thrust, it creates continuous large-scale water circulation inside long oxidation ditches and large biochemical tanks, keeps activated sludge suspended evenly and avoids sludge sedimentation effectively. It is the core equipment for aerobic & anoxic pool circulating flow in municipal wastewater treatment plants.

Product Overview

This submersible low speed thruster adopts integrated cast iron submersible motor matched with planetary reduction gearbox, which outputs large torque at low speed. The oversized polyurethane propeller features light weight, high toughness, wear resistance and anti-corrosion performance. Compared with small submersible mixers, it covers much longer pushing distance and larger flow area, perfectly suitable for long strip oxidation ditch, large-scale sewage tanks. The fully underwater sealed IP68 structure supports 24-hour continuous submerged operation. Power range covers 1.5kW ~ 7.5kW with multiple propeller diameters optional.

Working Principle

The sealed submersible motor drives the reduction gearbox to decelerate and amplify torque, then pushes the large polyurethane blades to rotate slowly. Wide-range pushing flow is formed in the water body, which circulates the whole tank water continuously, suspends activated sludge all the time, cooperates with aeration system to improve sewage purification efficiency.

Product Parameters

Key Design & Performance Features

1. Large-size polyurethane curved blades: high toughness, anti-abrasion, anti-fiber winding, long service life.

2. Built-in planetary reducer: large output torque, ultra-low rotating speed, far pushing distance, low energy consumption.

3. Class F insulated submersible motor with IP68 waterproof rating; built-in anti-condensation structure for stable long-term underwater running.

4. Dual tungsten carbide mechanical sealing structure: effectively prevent sewage infiltration, reduce leakage failure rate.

5. Heavy-duty cast iron motor housing, strong anti-impact capacity, adapt to harsh sewage working conditions.

6. Complete set of installation accessories (lifting lugs, guide rail, hanging bracket), easy underwater installation and maintenance.

Applications

Mainly applied for oxidation ditch, large anoxic tank, anaerobic tank and aerobic tank in municipal wastewater treatment projects; Also widely used for aquaculture water circulation, industrial wastewater large pool circulating agitation. Operating conditions:

1. Maximum medium temperature ≤ 40℃

2. Applicable pH range: 5 ~ 9

3. Liquid density ≤ 1150 kg/m³

4. Maximum submergence depth: ≤ 20m

Company Profile

WESUS is a leading manufacturer and total solution provider for advanced sewage and sludge treatment systems. Founded in Yixing, China in 2013, we offer reliable, cost-effective equipment and engineering services to global clients. Certified with ISO 9001, ISO 14001 and ISO 45001, we boast strong in-house R&D and manufacturing capabilities supported by a large production base, a professional technical team, patents and university cooperation. Our comprehensive product range includes screening, filtration, sludge dewatering, mixing, aeration and customized solutions. With end-to-end services from design to after-sales support and proven global project experience, we have earned wide recognition including national high-tech enterprise and 5-star after-sales certifications. Adhering to the philosophy of real innovation, excellence and win-win cooperation, WESUS is committed to providing smart, sustainable water treatment solutions for municipal and industrial clients worldwide.

FAQ

Q1: Are you a direct manufacturer? What certifications do you hold?
A: We are a direct manufacturer with our own production facilities and R&D team. We maintain full control over quality, cost, and delivery, and hold certifications including ISO 9001/14001 for our core products.

Q2: What types of collaboration models do you offer?
A: We provide flexible solutions:
- Equipment Supply: Standalone or packaged systems.
- Turnkey Solutions (EPC): Design, procurement, construction, and commissioning.
- Technical Cooperation: Process upgrades, operational maintenance support, and technical consulting.

Q3: How is after-sales service and support ensured?
A: We provide full lifecycle support:
- Warranty: 12–24 months on core equipment.
- Response: 7x24 remote support with fast on-site assistance when needed.
- Spare Parts: Genuine parts are stocked for long-term supply security.
- Maintenance: Annual Maintenance Contracts (AMC) are available to ensure long-term system efficiency.

Q4: What is your typical project execution process?
A: Our standardized workflow ensures efficiency and transparency:
1. Requirement Analysis → 2. Proposal & Quotation → 3. Design Finalization → 4. Production & Factory Testing → 5. Shipping & Installation → 6. Commissioning & Training → 7. After-sales Service.
Customer involvement is encouraged at key milestones.

Q5: Can you provide references or case studies?
A: We have extensive global project experience across municipal and various industrial sectors. We can provide detailed, anonymized case studies and client references upon request.

Q6: What are your payment terms and delivery lead times?
A: - Payment: We accept T/T and L/C, with standard industry progress payment terms.
- Lead Time: Standard equipment: 4–8 weeks. Large custom projects: 12–20 weeks.
A clear production schedule is provided upon contract signing.

Q7: How do you serve international clients?
A: We are experienced in international projects, arranging complete logistics (FOB, CIF, DDP, etc.) and providing full customs documentation. Our designs pre-consider compliance requirements in target markets.

Q8: Can you upgrade or retrofit existing systems?
A: Yes. We specialize in evaluating existing facilities and providing customized retrofit and expansion solutions to enhance performance and capacity with minimal investment and downtime.

Q9: How can we start a consultation?

A: Please contact our Sales Engineering team. To facilitate an efficient discussion, please have your treatment requirements, water

quality data, and site information ready. We will provide a preliminary proposal and professional advice.