Jiangsu Longdai Environmental Protection Group Co., Ltd.
| Payment Terms | L/C,D/A,D/P,T/T,Western Union,MoneyGram |
| Supply Ability | 100Set Per Month |
| Delivery Time | 30 working days |
| Packaging Details | Wooden or customized |
| 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 |
| Brand Name | Longdai |
| Model Number | LW |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C,D/A,D/P,T/T,Western Union,MoneyGram | Supply Ability | 100Set Per Month |
| Delivery Time | 30 working days | Packaging Details | Wooden or customized |
| 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 |
| Brand Name | Longdai | Model Number | LW |
| Place of Origin | China | ||
| High Light | horizontal decanter centrifuge for wastewater ，solid-liquid separation centrifuge environmental ，industrial decanter centrifuge with warranty | ||
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 |
Company Details
Business Type:
Manufacturer,Seller
Year Established:
2010
Total Annual:
7000000-8000000
Employee Number:
64~100
Ecer Certification：
Verified Supplier
Jiangsu Longdai Environmental Protection Group Co., Ltd. is an environmental protection equipment manufacturer with more than 15 years of experience. It has provided a large number of sophisticated environmental protection equipment at home and abroad, established three br... Jiangsu Longdai Environmental Protection Group Co., Ltd. is an environmental protection equipment manufacturer with more than 15 years of experience. It has provided a large number of sophisticated environmental protection equipment at home and abroad, established three br...
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