Vertical Frame Central Drive Sludge Scraper for Radial Flow Sedimentation Tanks

Vertical Frame Central Drive Sludge Scraper for Radial Flow Sedimentation Tanks

Brief Description

ZCG series vertical frame central drive sludge scraper is designed for radial flow sedimentation tanks with central water inlet, peripheral water outlet and central sludge discharge. It is widely used for sludge scraping in secondary sedimentation tanks of municipal wastewater treatment plants.

Product Overview

The ZCG vertical frame central drive sludge scraper adopts central drive and vertical frame structure. Sewage flows into the diversion diffuser from the water inlet and diffuses radially evenly toward the tank periphery. Suspended sludge settles to the tank bottom. The driving device rotates the central upright column, driving the scraping arm and scraper plate to rotate, gathering sludge from the tank periphery to the central sludge hopper. Sludge is discharged out of the tank via static water pressure through the sludge discharge pipe. Floating scum on the water surface is skimmed to the tank edge by the skimming device, then pushed into the scum hopper for discharge. Supernatant flows over triangular weir plates into the outlet channel.

Working Principle

1. Wastewater enters the diversion diffuser from the central inlet and flows radially outward evenly. Suspended solids settle to the tank bottom.

2. The drive unit rotates the central vertical column, which drives scraping arms and scraper blades to revolve around the tank centre.

3. Sludge deposited on the tank floor is continuously scraped toward the central sludge hopper and discharged by hydrostatic pressure through the sludge discharge pipeline.

4. A scum skimming mechanism collects floating scum on the water surface, pushing it to the tank rim and into the scum hopper for removal.

5. Clarified supernatant passes over triangular outlet weirs and flows into the effluent channel.

Product Parameters

Key Design & Performance Features

1. Semi-bridge working frame: Available in carbon steel or stainless steel construction to adapt to different corrosive environments.

2. Optimized drive system: Combines helical-bevel gear reducer and worm gear reducer, delivering stable output torque & rotational speed with high transmission efficiency.

3. Built-in overload protection: Torque protection device inside the reducer ensures reliable operation. Supports local on-site control and remote automatic control.

4. Integrated scum skimming: Equipped with surface scum skimming assembly to realize simultaneous sludge scraping and scum removal.

5. Modular structure: Easy installation, maintenance and flexible customization for different tank diameters and water depths.

Applications

1. Municipal wastewater treatment plants: Secondary sedimentation tanks.

2. Large-diameter radial flow sedimentation tanks.

3. Industrial water treatment sedimentation processes (upon customization).

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.