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| Place of Origin: | China |
| Brand Name: | Longdai |
| Model Number: | LW |
| Document: | Long Dai Water Treatment Eq...ue.pdf |
| Minimum Order Quantity: | 1Set |
|---|---|
| Price: | 15000USD-25000USD |
| Packaging Details: | Wooden or customized |
| Delivery Time: | 30 working days |
| Payment Terms: | L/C,D/A,D/P,T/T,Western Union,MoneyGram |
| Supply Ability: | 100Set Per Month |
| Material: | SS304 | Machinery: | Separation Centrifuge |
|---|---|---|---|
| Discharge Type: | Spiral Screw Discharge | Item: | Industrial Separator Centrifuge Machine |
| Description: | Solid-liquid Separation Machine | Auxiliary Motor Power: | 7.5kw |
| Drum Length: | 1720L | Keywords: | Fish Oil Decanter Centrifuge |
| Capacity: | Up To 1000 Cubic Meters Per Hour | Power: | 30Kw |
| Highlight: | horizontal decanter centrifuge for wastewater,solid-liquid separation centrifuge environmental,industrial decanter centrifuge with warranty |
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The Horizontal Decanter Centrifuge is a high-end environmental separation system that utilizes centrifugal force to achieve continuous solid-liquid separation. It is widely deployed in global wastewater treatment, petrochemical processing, food production, and mining engineering.
| No. | Component | Function |
|---|---|---|
| 1 | Vibration Absorber | Isolates operational vibration for stable running |
| 2 | Main Base Frame | Supports total machine weight and provides installation reference |
| 3 | Main Motor | Drives bowl at high speed with VFD-controlled variable speed |
| 4 | Feed Tube | Introduces slurry into the rotating bowl |
| 5 | Conveyor/Scroll | Transports settled solids toward discharge port |
| 6 | Bowl | Primary separation chamber with cylindrical-conical composite geometry |
| 7 | Weir Plate / Adjustable Ring | Regulates liquid overflow to control separation performance |
| 8 | Protective Cover | Fully enclosed design for safety and environmental compliance |
| 9 | Bearing Housing | Supports bowl and scroll with precision-grade bearings |
| 10 | Differential Gearbox | Precisely controls speed difference between bowl and scroll |
| 11 | Liquids Discharge Port | Continuously discharges clarified liquid phase |
| 12 | Solids Discharge Port | Continuously discharges dewatered solid cake |
Step 1: Feed Acceleration
Slurry enters the rapidly rotating bowl via the feed tube and instantly stratifies under a high centrifugal field (1,500–4,000 G).
Step 2: Solid Sedimentation
Denser solid particles settle against the inner wall of the bowl, forming a compact solids ring; the lighter liquid forms an inner clarified layer.
Step 3: Spiral Conveying
The scroll, operating at a controlled differential speed (2–50 rpm), continuously pushes the settled solids toward the conical end for discharge.
Step 4: Liquid Overflow
Clarified liquid flows axially along channels between scroll flights toward the cylindrical end and exits through adjustable weir plates.
| Parameter | Lab Scale | Small Industrial | Medium Industrial | Large Industrial | Extra-Large |
|---|---|---|---|---|---|
| Bowl Diameter | 220–360 mm | 360–450 mm | 520–720 mm | 800–1,000 mm | 1,200 mm |
| Bowl Length | 600–1,200 mm | 1,200–1,800 mm | 1,800–3,000 mm | 3,000–4,200 mm | 4,500–5,500 mm |
| L/D Ratio | 2.0–3.0 | 2.5–3.5 | 3.0–4.2 | 3.5–4.5 | 4.0–5.0 |
| Max Speed | 3,500–4,000 rpm | 2,800–3,500 rpm | 2,000–2,800 rpm | 1,600–2,200 rpm | 1,400–1,800 rpm |
| Separation Factor (G) | 1,500–3,200 G | 1,600–3,000 G | 1,800–3,200 G | 1,800–3,500 G | 2,000–4,000 G |
| Capacity | 0.5–5 m³/h | 3–15 m³/h | 10–50 m³/h | 40–100 m³/h | 80–150 m³/h |
| Main Motor Power | 3–7.5 kW | 7.5–18.5 kW | 22–75 kW | 90–160 kW | 200–355 kW |
| Auxiliary Motor Power | 1.5–3 kW | 3–5.5 kW | 5.5–15 kW | 18.5–30 kW | 37–55 kW |
| Machine Weight | 300–800 kg | 1,200–2,500 kg | 4,000–8,000 kg | 12,000–18,000 kg | 22,000–35,000 kg |
| Dimensions (L×W×H) | 1.5×0.8×1.0 m | 2.5×1.2×1.3 m | 3.5×1.6×1.6 m | 5.0×2.2×2.0 m | 6.5×2.8×2.4 m |
| Application | Bowl Material | Scroll Material | Protection Rating |
|---|---|---|---|
| General Wastewater | Duplex 2205 | SS304 hardfacing | IP55 |
| High Chloride Environments | Duplex 2507 / Titanium | 2507 + Tungsten Carbide | IP65 |
| Strong Acid Media | Hastelloy C-276 | Ceramic Lining | IP65 |
| Food/Pharma | Mirror-polished SS316L | SS316L + PTFE coating | IP65 + 3A Certified |
| Oil & Gas (Explosive Zones) | Duplex 2205 | Tungsten Carbide Hard Alloy | Ex d IIB T4 |
| Industry | Feed Material | Feed Solids (%) | Cake Moisture (%) | Capacity (m³/h) |
|---|---|---|---|---|
| Municipal WWTP | Waste Activated Sludge | 0.5–1.5% | 75–82% | 10–80 |
| Pulp & Paper | Deinking Sludge / Effluent | 2–8% | 70–78% | 15–60 |
| Textile Dyeing | Dye Sludge | 1–4% | 72–80% | 8–40 |
| Leather Tanning | Chrome-Bearing Sludge | 3–10% | 65–75% | 5–30 |
| Electroplating | Heavy Metal Sludge | 2–6% | 70–78% | 3–25 |
| Parameter | Specification |
|---|---|
| Applicable Feed | Tank bottom sludge, pit oil sludge, refinery “three sludges” |
| Operating Temperature | 60–90°C (adjustable) |
| Oil Recovery Rate | ≥92% |
| Residual Oil in Solids | ≤2% |
| Oil Content in Effluent | ≤100 mg/L |
| Unit Capacity | 5–40 m³/h |
| Application | Separation Goal | Special Configuration |
|---|---|---|
| Vegetable Oil Extraction | Oil/water/solid tricanter separation | Food-grade materials, steam heating |
| Juice Clarification | Removal of pulp, fibers, pectin | Sanitary design, CIP cleaning |
| Beer Yeast Recovery | Yeast cell harvesting | Low-temperature operation, high viability |
| Biopharmaceuticals | Biomass collection, protein purification | Sterile design, GMP compliant |
| Starch Processing | Gluten concentration, starch washing | Multi-stage counter-current washing |
| Criteria | Decanter Centrifuge | Plate-Frame Press | Belt Press | Screw Press |
|---|---|---|---|---|
| Continuous Operation | ✓ 24/7 | ✗ Batch only | ✓ | ✓ |
| Footprint | Compact (baseline) | 3–5× larger | 1.5× | 0.8× |
| Operators Required | 1 (monitoring) | 2–3 (manual unloading) | 1–2 | 1 |
| Polymer Dosage | Low (0–3 kg/ton DS) | High (4–8 kg/ton DS) | Medium (2–5) | Medium (2–4) |
| Consumables | No filter cloth; long-life wear parts | Frequent cloth replacement | Belt replacement | Ring plate wear |
| Moisture Stability | ±2% | ±5% | ±3% | ±3% |
| Wash Water Use | Minimal (self-cleaning) | High (cloth rinse) | Medium | Low |
| Noise Level | ≤75 dB(A) | ≤85 dB(A) | ≤80 dB(A) | ≤72 dB(A) |
| Installation Height | Low (no platform needed) | High (discharge platform) | Medium | Low |
Standard Tier
Advanced Tier
Intelligent Tier
| Certification | Standard | Scope |
|---|---|---|
| Machinery Directive | 2006/42/EC (MD) | EU market access |
| Pressure Equipment Directive | 2014/68/EU (PED) | Pressurized components |
| ATEX | 2014/34/EU | Zone 1/21 explosive atmospheres |
| IECEx | IECEx 02 | Global explosion safety recognition |
| NEC | Article 500/505 | North American hazardous locations |
| FDA | 21 CFR 177.1550 | US food-contact compliance |
| EU Food Contact | EC 1935/2004 | European food safety |
| 3-A Sanitary | 3-A Standards | Dairy & beverage industry |
| China Explosion Proof | GB 3836 / Ex d IIB T4 | Domestic market |
| Eurasian Conformity | GOST-R / EAC | Eurasian Economic Union |
☑ Material type & source (detailed composition)
☑ Required capacity (m³/h or tons dry solids/day)
☑ Feed solids concentration (% w/w or mg/L)
☑ Particle size distribution (d10/d50/d90)
☑ Solid-liquid density difference (g/cm³)
☑ Feed temperature & pH
☑ Target cake moisture (%)
☑ Liquid clarity requirement (SS removal rate)
☑ Installation environment (indoor/outdoor/hazardous area)
☑ Altitude & power supply specifications
Separation Factor (G):
$$ G = frac{r cdot omega^2}{g} = frac{r cdot (2pi n / 60)^2}{9.81} $$
Where:
Capacity Estimation:
$$ Q = k cdot D^2 cdot L cdot G^{0.5} cdot frac{Deltarho}{mu} $$
Where ( k ) is a material-specific coefficient determined by lab testing.
| Phase | Services | Deliverables |
|---|---|---|
| Pre-Sale | Lab testing, sizing, process design | Test report + technical proposal |
| Order Execution | Production tracking, third-party inspection | Photos/videos + inspection certificates |
| Installation & Commissioning | On-site guidance, no-load/load tests | Commissioning report + operator training |
| Operational Support | Remote diagnostics, spare parts, maintenance | 24h response + 48h on-site service |
| Upgrade & Optimization | Control system modernization, wear-part retrofit | Upgrade plan + performance validation |
Contact Person: Mr. Vance
Tel: +8615301537517
Fax: 86-0510-87837599
