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NJL Internally Fed Perforated Plate Screen for Wastewater Treatment
| Place of Origin | CHINA |
| Brand Name | WESUS |
| Certification | ISO |
| Model Number | Mechanical Bar Screen |
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NJL Internally Fed Perforated Plate Screen for Wastewater Treatment
Brief Description
The NJL Internally Fed Perforated Plate Screen is designed for solid removal in municipal wastewater, industrial wastewater, and water intake applications. Its internally fed structure and moving perforated plates help capture suspended solids, fibers, hair, and other debris before the water enters downstream treatment processes.
Product Overview
The NJL screen is a mechanical screening solution for wastewater pretreatment and water intake systems. It features an internal inlet and perforated screen plates arranged on both sides of the machine.
Wastewater enters through the lower inlet and passes outward through the screen plates. Solid materials are retained on the plate surfaces, while screened water flows into the downstream channel. The moving plate system transports the captured screenings upward for removal.
The equipment is suitable for municipal sewage treatment, water supply facilities, and industrial wastewater applications, including paper manufacturing, food processing, and slaughterhouse wastewater treatment.
Product Parameters
|
Technical Parameter |
Specification |
|
Screen Aperture |
Φ1, 2, 3, 4, 5, 6 mm |
|
Separation Efficiency |
81%–97% |
|
Motor Power |
1.1–3 kW |
|
Channel Width (B) |
900–2500 mm |
|
Equipment Width (B1) |
800–1200 mm |
|
Channel Depth (H1) |
1.2–3.0 m |
|
Equipment Length (L) |
950–3000 mm |
|
Maximum Medium Temperature |
0–60℃ |
|
Height from Foundation to Discharge Outlet (H2) |
Customizable; 1000 mm for standard model |
|
Flushing Water Pressure |
Above 4 bar |
|
Main Body Material |
Stainless Steel 304 |
|
Screen Plate Width (m) |
Screen Aperture (mm) |
Water Level Depth (m) |
0.6 m/s |
0.7 m/s |
0.8 m/s |
0.9 m/s |
1.0 m/s |
Remarks |
|
1 |
Φ1 |
1 |
0.066 |
0.077 |
0.088 |
0.099 |
0.11 |
With rotary brush cleaning |
|
1 |
Φ2 |
1 |
0.114 |
0.133 |
0.152 |
0.171 |
0.19 |
With rotary brush cleaning |
|
1 |
Φ3 |
1 |
0.132 |
0.154 |
0.176 |
0.198 |
0.22 |
— |
|
1 |
Φ3 |
1 |
0.192 |
0.240 |
0.256 |
0.288 |
0.32 |
— |
|
1 |
Φ4 |
1 |
0.180 |
0.210 |
0.240 |
0.270 |
0.30 |
With rotary brush cleaning |
|
1 |
Φ4 |
1 |
0.240 |
0.280 |
0.320 |
0.360 |
0.40 |
— |
|
1 |
Φ5 |
1 |
0.216 |
0.252 |
0.288 |
0.324 |
0.36 |
With rotary brush cleaning |
|
1 |
Φ5 |
1 |
0.276 |
0.322 |
0.368 |
0.414 |
0.46 |
— |
|
1 |
Φ6 |
1 |
0.300 |
0.350 |
0.400 |
0.450 |
0.50 |
— |
|
1 |
Φ8 |
1 |
0.288 |
0.336 |
0.384 |
0.432 |
0.48 |
— |
|
1 |
Φ10 |
1 |
0.318 |
0.371 |
0.424 |
0.477 |
0.53 |
— |
Working Principle
Wastewater enters the lower inlet of the machine and flows through the perforated plates on both sides. Suspended solids and other debris are retained on the screening surfaces.
The motor-driven chain system moves the plates upward, carrying the collected screenings to the upper section. As the plates pass around the upper sprockets, the flushing system removes the accumulated debris. The screenings and flushing water enter the collection trough and are discharged from the machine.
Key Design & Performance Features
1. Internally Fed Configuration
Directs incoming wastewater through the screening surfaces on both sides of the machine.
2. Continuous Screening Operation
The moving plate system transports captured solids toward the discharge section.
3. Perforated Plate Design
Supports the interception of various solid materials, including fibers and flat debris.
4. Compact Vertical Installation
Helps reduce the equipment footprint.
5. Integrated Flushing System
Assists in removing screenings from the plates.
6. Replaceable Screen Plates
The insert-mounted design facilitates maintenance and replacement.
7. Project-Based Configuration
Dimensions and installation details can be adapted to site conditions.
Applications
1. Municipal wastewater treatment plants
2. Water supply and intake facilities
3. Industrial wastewater treatment
4. Paper and pulp industry wastewater
5. Food processing wastewater
6. Slaughterhouse wastewater
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 possess 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.
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