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Gravity‑Fed Wedge Wire Fine Screen | Wastewater Pre‑Treatment Static Screening Unit
| Place of Origin | CHINA |
| Brand Name | WESUS |
| Certification | ISO |
| Model Number | Static Screen |
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,wastewater static screening unit
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Gravity‑Fed Wedge Wire Fine Screen | Wastewater Pre‑Treatment Static Screening Unit
Brief Description
This gravity‑fed wedge wire fine screen is a non‑power static screening device for wastewater pre‑treatment. It captures suspended solids, floating debris and settleable contaminants purely by hydraulic gravity. Characterized by no‑moving‑part design, zero driving power and compact layout, it is widely selected for municipal and industrial projects where gravity inflow drop and medium‑or‑lower flow volume are available.
Product Overview
Within the whole sewage treatment workflow, this wedge‑wire fine screen is positioned after coarse and intermediate bar screens and before regulating tanks or hydrolytic‑acidification reactors. It fulfils fine‑grade solid interception duties, lowers incoming suspended‑solid loading and effectively prevents clogging of subsequent treatment structures and water‑distribution facilities.
Product Parameters
|
Parameter Item |
Conventional Range |
Remarks |
|
Sieve slot width b |
0.15 / 0.25 / 0.3 / 0.5 / 0.75 / 1.0 / 1.5 / 2.0 / 2.5 mm |
Commonly adopted: 0.5–1.0 mm; for ultra-fine interception in sewage systems, slot width shall not exceed 1.0 mm (GB 50014-2021) |
|
Effective sieve width B |
500 / 600 / 900 / 1200 / 1500 / 2000 / 2500 mm |
Selected according to treatment capacity; customizable |
|
Sieve surface type & angle |
Inclined flat-plate type: 45° – 60°; curved-surface type: wrap-around angle 45° – 120° |
Curved-surface radius: 700–1500 mm |
|
Single-unit treatment capacity |
5–300 m³/h (up to 550 m³/h for large-size models) |
Strongly correlated with slot width, water quality and sieve width; refer to Section 7 |
|
Overflow load per unit width q |
Approx. 40–150 m³/(m·h) |
Adjusted for water quality and slot width; see Table 6-1 |
|
Inlet mode |
Gravity free-flow, weir overflow water distribution |
Weir head: generally 50–100 mm |
|
Overall unit height |
Approx. 1.6–2.0 m |
Inlet elevation: approx. 1.5–1.9 m; reserve margin for elevation design |
|
Connection pipe size |
Inlet: DN100–DN300; Outlet: DN150–DN350 |
Scales with unit size |
|
Unit empty weight |
Approx. 220–950 kg |
Operating weight plus water weight: approx. 0.7–1.0 t |
Working Principle
1.Uniform Water Spread
Incoming wastewater flows into upper distribution box and flows over the overflow weir. A uniform thin water film spreads across the complete effective width of wedge‑wire screen, making full use of screening surface area.
2.Solid‑Liquid Separation
Wastewater flows in tangential direction against the precision‑welded V‑shaped wedge‑wire screen. Driven by gravity and hydraulic shear force, water plus fine particles pass through screen gaps, while larger solid substances remain on top of screen surface.
3.Self‑Discharging of Captured Solids
Accumulated solids are pushed by follow‑up wastewater flow plus gravity force, sliding down along inclined or curved screen face into bottom slag‑collecting hopper to realize continuous automatic discharge.
Key Design & Performance Features
1.Energy‑saving Design
The core screening section consumes no drive power; only optional auxiliary flushing or slag‑removal attachments draw little electric power.
2.Anti‑clog Self‑cleaning Performance
Wedge‑wire slots cooperate with continuous water‑film flushing; bonded dirt can be cleared via low‑pressure water spray.
3.Convenient Field Maintenance
Absence of rotating wearable components. Damaged screen modules can be replaced individually without disassembling the complete unit; only routine flushing and visual inspections are required.
4.Operating Notes
A certain gravity inflow head is mandatory. Optimized for wastewater containing coarse suspended particles, not suitable for colloidal micro‑fine wastewater or direct sludge dewatering.
Applications
Municipal sewage pretreatment, food processing, brewery and distillery wastewater, slaughterhouse effluent, sugar plant, textile & leather manufacturing wastewater, livestock breeding effluent and papermaking pre‑treatment.
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.
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