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 |
| Bearing | FAG Or SKF |
| Centrifuge Type | Decanter Centrifuge |
| Service Provided | Technical Support Is Available |
| Processing | Separator Centrifuge |
| Low Energy Consumption | Optimized hydraulic/mechanical back drive reduces OPEX by ≤25% vs. conventional models |
| Triple-Phase Separation | Precision separation of solids/oil/water from complex sludges (up to 99% liquid recovery) |
| Discharge Type | Scroll Discharge |
| Easy Maintenance | Quick Disassembly And Cleaning |
| 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 |
| Bearing | FAG Or SKF | Centrifuge Type | Decanter Centrifuge |
| Service Provided | Technical Support Is Available | Processing | Separator Centrifuge |
| Low Energy Consumption | Optimized hydraulic/mechanical back drive reduces OPEX by ≤25% vs. conventional models | Triple-Phase Separation | Precision separation of solids/oil/water from complex sludges (up to 99% liquid recovery) |
| Discharge Type | Scroll Discharge | Easy Maintenance | Quick Disassembly And Cleaning |
| Brand Name | Longdai | Model Number | LW |
| Place of Origin | China | ||
| High Light | continuous operation decanter centrifuge ，high-dryness cake centrifuge ，low cost decanter centrifuge | ||
The decanter centrifuge (full name: horizontal spiral discharge sedimentation centrifuge) is a mechanical device that utilizes high-speed rotation to generate centrifugal force for continuous solid-liquid separation. Feed slurry enters the rapidly rotating bowl through a central feed pipe. Under centrifugal force, denser solid particles settle onto the inner wall of the bowl and are continuously conveyed toward the conical discharge end by a scroll conveyor rotating at a slightly different speed (differential speed). The lighter liquid phase overflows from the cylindrical end via adjustable weirs or is extracted by a centripetal pump—achieving efficient, fully enclosed, and uninterrupted solid-liquid separation.
| Parameter | Technical Range |
|---|---|
| Bowl Diameter (mm) | 250 / 360 / 450 / 550 / 650 / 750 / 900 |
| Length-to-Diameter Ratio (L/D) | 3.5 – 5.0 (commonly 4.0–4.5) |
| Max Bowl Speed (rpm) | 3,000–4,500 (small diameters); 1,500–2,800 (large diameters) |
| Separation Factor (G) | 1,500 – 4,000 |
| Differential Speed (rpm) | 0.5 – 20 (infinitely adjustable) |
| Main Motor Power (kW) | 7.5 – 132 |
| Auxiliary Motor Power (kW) | 2.2 – 45 |
| Max Throughput (m³/h) | 2 – 120 (water-equivalent basis) |
| Solids Recovery Rate (%) | ≥95 – 99% (depends on sludge & flocculant) |
| Cake Dry Solids (%) | 20 – 40% (municipal sludge: typically 25–30%) |
| Liquid Phase Suspended Solids (mg/L) | ≤500 – 5,000 (can be reduced to <200 mg/L with optimized flocculation) |
| Noise Level (dB(A)) | ≤85 (at 1 m, with enclosure) |
| Vibration Severity (mm/s) | ≤4.5 |
| Operating Temperature (°C) | 0 – 80 (special designs up to 120°C) |
| Operating Pressure | Slight negative pressure or atmospheric (fully enclosed) |
| Materials | |
| – Bowl | Duplex 2205 / 316L / Abrasion-resistant carbon steel |
| – Scroll | 316L + tungsten carbide cladding / ceramic tiles |
| – Casing | 304 / 316L stainless steel |
| Control & Integration | |
| Control System | PLC + HMI touchscreen; remote start/stop, auto differential control, alarm logging |
| Communication Protocols | Modbus RTU/TCP, Profibus DP, Profinet (optional) |
| Protection Rating | IP54/IP55 (motors); Control cabinet: IP42 |
| Explosion Protection | Ex d IIB T4 (optional for oil/gas, chemical industries) |
| Approx. Weight (kg) | 800 – 12,000 (model-dependent) |
| Installation | Anti-vibration rubber mounts or spring isolators; no anchor bolts required |
| Industry Sector | Specific Applications |
|---|---|
| Municipal Wastewater | Thickening & dewatering of waste activated sludge (WAS); cake for landfill, incineration, or composting |
| Oil & Gas | Drilling mud processing, oily sludge reduction, tank cleaning waste separation |
| Chemical & Pharma | Solid-liquid separation of high-salt/high-COD mother liquors, catalyst recovery, intermediate purification |
| Food & Beverage | Dewatering of fruit pomace (apple, citrus), spent grain, soy protein, starch |
| Mining & Metallurgy | Tailings dewatering, coal washery effluent treatment, metal powder recovery |
| Livestock Farming | Digestate separation, manure solid-liquid fractionation to reduce downstream biological load |
| Pulp & Paper | Stock thickening, white water recovery, de-inking sludge dewatering |
| Textile & Dyeing | Dye sludge settling, size recovery, printing sludge dewatering |
As a cornerstone technology in water treatment and industrial solid-liquid separation, the performance of decanter centrifuges directly impacts project efficiency, operational expenditure, and environmental compliance. With its unmatched combination of continuous operation, high separation efficiency, low lifecycle costs, and sealed design, the decanter centrifuge has become the preferred solution for municipal utilities, industrial plants, and EPC contractors worldwide.
With extensive experience in exporting environmental equipment, we understand the diverse requirements across global markets—including certifications (CE, ATEX, GOST, SASO), multilingual documentation, logistics, and after-sales service. We offer:
If you are planning a wastewater treatment or industrial solid-liquid separation project, please share your feed sludge properties and capacity requirements. We will deliver a professional, efficient, and cost-effective decanter centrifuge solution tailored to your needs—helping you achieve sustainability, regulatory compliance, and operational excellence.
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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