Technical Specifications
Yixing Feiran DL Series Volute Screw Press — manufactured by our partner facility with 15+ years of dewatering equipment production experience. Real factory data, not estimates.
| Model | DS Capacity (Low→High) |
Sludge @2000mg/L | Sludge @5000mg/L | Sludge @10000mg/L | Sludge @20000mg/L | Sludge @30000mg/L | Sludge @50000mg/L |
|---|---|---|---|---|---|---|---|
| DL-101 | ~3–6 kg/h | ~1.5 m³/h | ~1.0 m³/h | ~0.6 m³/h | ~0.3 m³/h | ~0.2 m³/h | ~0.12 m³/h |
| DL-201 | ~9–20 kg/h | ~4.5 m³/h | ~3.5 m³/h | ~2.0 m³/h | ~1.0 m³/h | ~0.6 m³/h | ~0.4 m³/h |
| DL-202 | ~18–40 kg/h | ~9.0 m³/h | ~7.5 m³/h | ~4.0 m³/h | ~2.0 m³/h | ~1.3 m³/h | ~0.8 m³/h |
| DL-301 | ~30–60 kg/h | ~15 m³/h | ~11 m³/h | ~6.0 m³/h | ~3.0 m³/h | ~2.0 m³/h | ~1.2 m³/h |
| DL-302 | ~60–120 kg/h | ~30 m³/h | ~20 m³/h | ~12 m³/h | ~6.0 m³/h | ~4.0 m³/h | ~2.4 m³/h |
| DL-303 | ~90–180 kg/h | ~45 m³/h | ~32 m³/h | ~18 m³/h | ~9.0 m³/h | ~6.0 m³/h | ~3.6 m³/h |
| DL-352 | ~120–200 kg/h | ~60 m³/h | ~24 m³/h | ~20 m³/h | ~10 m³/h | ~8.0 m³/h | ~4.0 m³/h |
| DL-353 | ~180–300 kg/h | ~90 m³/h | ~36 m³/h | ~30 m³/h | ~15 m³/h | ~12 m³/h | ~6.0 m³/h |
| DL-403 | ~270–450 kg/h | ~135 m³/h | ~100 m³/h | ~45 m³/h | ~22.5 m³/h | ~15 m³/h | ~9.0 m³/h |
Notes: DS capacity range shows low-concentration to high-concentration sludge throughput. Actual capacity depends on sludge characteristics, polymer dosage, and operating conditions. All data from factory test reports.
Key Performance Features
- Low-concentration direct dewatering — reduces civil construction costs
- Self-cleaning design — fixed and moving rings replace filter cloth, no clogging, handles oily sludge
- Ultra-low energy — only 1/8 of belt press, 1/20 of centrifuge power consumption
- Fully automatic operation — minimal operator attention required
- Low noise — suitable for indoor installation (<65 dB)
- Compact footprint — 50% smaller than equivalent belt press
Applications
- Municipal wastewater treatment plants
- Food & beverage industry
- Chemical & pharmaceutical plants
- Paper & textile mills
- Oil field & petrochemical
- Electroplating & mining
- Livestock & restaurant wastewater
Frequently Asked Questions
What polymer consumption should I expect?
Typically 1–3 kg/tDS (dry solids). Our engineers optimize dosage based on your specific sludge analysis. For municipal sludge, PAM consumption is usually 1.5–2.5 kg/tDS.
How does the self-cleaning mechanism work?
The volute screw design uses alternating fixed and moving rings. As the screw shaft rotates, the moving rings undergo slight axial displacement, continuously cleaning the gaps between rings. This prevents clogging without high-pressure spray washing, saving 90% of wash water.
What maintenance is required?
Quarterly bearing lubrication and annual seal inspection. Bearing service life exceeds 50,000 hours. The self-cleaning design dramatically reduces routine maintenance compared to belt presses or centrifuges.
Can it handle variable sludge conditions?
Yes. The DL series effectively processes sludge with MLSS from 2,000 to 50,000 mg/L. Screw speed and overflow weir are adjustable to optimize performance across varying conditions.
What certifications do you have?
ISO 9001:2015 certified. CE marking available on request. We also provide third-party inspection reports from SGS/BV.
What is the typical cake dryness?
18–25% for municipal sludge, up to 30–35% for certain industrial sludges, depending on feed characteristics and polymer optimization.
Technical Specifications
| Parameter | Specification |
|---|---|
| Capacity | 50-400 kg DS/h |
| Cake solids | 25-40% |
| Polymer | 2-4 kg/t DS |
| Power | 1.5-15 kW |
| Material | SS304/SS316L |
Verified Factory Specifications — Contact engineering for project-specific sizing and performance guarantees.
Regional Applications & Compliance
Saudi Arabia & GCC
- Municipal WWTP sludge dewatering — enclosed design for odor-free indoor installation
- Desalination pre-treatment sludge — SS316L for high-TDS service
- Zero spray water operation — critical for water-scarce region
Indonesia
- Palm oil mill sludge — handles oily/greasy sludge without clogging
- Textile and mining industry — robust operation with minimal supervision
- Tropical climate — enclosed design prevents rain dilution
Vietnam
- Food processing and textile sludge dewatering — high FOG content handled
- Industrial zone centralized dewatering — compact footprint
- Cost-competitive — lower OPEX vs belt filter press over project life
Frequently Asked Questions
Q: What is the typical lead time?
A: Standard models: 8-12 weeks. Custom specifications: 12-16 weeks. Contact us for expedited delivery options.
Q: Do you provide installation and commissioning support?
A: Yes. We offer on-site commissioning supervision and remote technical support. Detailed installation manuals and drawings are provided with every order.
Q: What warranty do you provide?
A: 12-month warranty from date of commissioning or 18 months from date of shipment, whichever comes first. Extended warranty options available.