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Maximizing Sludge Reduction: High-Performance Decanter Centrifuges for Municipal Wastewater and Mining Applications

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Maximizing Sludge Reduction: High-Performance Decanter Centrifuges for Municipal Wastewater and Mining Applications

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Brand Name :	Longdai
Model Number :	LW
Price :	15000USD-25000USD
Payment Terms :	L/C,D/A,D/P,T/T,Western Union,MoneyGram
Supply Ability :	100Set Per Month
Delivery Time :	30 working days

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Maximizing Sludge Reduction: High-Performance Decanter Centrifuges for Municipal Wastewater and Mining Applications

In modern industrial and municipal wastewater treatment, sludge handling typically accounts for up to 60% of total operational costs. Conventional dewatering methods often suffer from either excessively high cake moisture content—driving up transportation expenses—or excessive polymer (flocculant) consumption.

Our heavy-duty horizontal screw decanter centrifuge is engineered specifically to address these challenges. Whether you’re processing municipal sludge, industrial effluent, or mineral tailings, our system delivers among the lowest achievable cake moisture levels and exceptionally clear centrate in the market.

Unlike standard centrifuges, our units feature critical components protected with duplex stainless steel or tungsten carbide wear-resistant alloys, ensuring durability in the harshest environments.

Key Design Advantages

High Length-to-Diameter Ratio (L/D = 3.5–4.2)
Extends residence time inside the bowl, enabling effective dewatering even of difficult-to-process biological sludges—achieving cake dryness of ≤75–80% moisture (depending on feed characteristics).
High G-Force Separation (Up to 3,000–4,000 × g)
Captures fine particles down to the micron level, significantly outperforming belt filter presses in both clarity and solids recovery.
Optimized Differential Gearbox
Equipped with either hydraulic or planetary gear differential drives, offering high torque and excellent shock resistance—ideal for abrasive feeds like sand-laden slurries or mining tailings.

Core Benefits – Your Return on Investment

Benefit	Impact
Lower Transportation Costs	Drier cakes = fewer truckloads and reduced disposal fees
Reduced Polymer Consumption	Advanced liquid pool depth control saves 10–15% in flocculant vs. competitors
Fully Automated & Continuous Operation	24/7 unattended operation with PLC/HMI control; minimal manual intervention
Extended Service Life	Scroll flights hardfaced with tungsten carbide alloy, rated for >30,000 operating hours

Applications

Municipal Sector: Thickening and dewatering of waste activated sludge (WAS) at sewage treatment plants
Industrial Sector: Chemical, textile dyeing, paper mill white water, and food processing wastewater
Mining & Construction: Coal washery effluent, mineral tailings dewatering, and TBM (tunnel boring machine) slurry processing

Choosing our decanter centrifuge means choosing lower lifecycle costs and higher environmental compliance. We offer end-to-end support—from engineering selection and installation to global after-sales service.

Comprehensive Technical Specifications (General Industry Standard)

Note: The following data represent typical industry ranges for reference purposes and are not brand-specific. Suitable for inclusion in generic product specification sheets.

General Specifications

Parameter Category	Item	Small Model	Medium Model	Large Model
Basic Dimensions	Bowl Diameter (mm)	350 – 450	500 – 650	700 – 800+
	Length-to-Diameter Ratio (L/D)	3.5 – 4.2	3.8 – 4.2	4.0 – 4.5
	Effective Settling Area (m²)	10 – 20	25 – 60	70 – 120

Performance Parameters

Parameter Category	Item	Small Model	Medium Model	Large Model
Capacity & Speed	Throughput (m³/h)	5 – 20	20 – 60	60 – 150+
	Max. Bowl Speed (rpm)	4,500	3,500	2,800
	Separation Factor (×g)	Up to 4,000	Up to 3,200	Up to 2,500
	Differential Speed (rpm)	0.5 – 20 (adjustable)	0.5 – 20 (adjustable)	0.5 – 20 (adjustable)

Cake & Separation Performance

Parameter	Small Model	Medium Model	Large Model
Cake Moisture – Municipal Sludge	75% – 80%	75% – 80%	75% – 80%
Cake Moisture – Industrial Sludge	65% – 75%	65% – 75%	65% – 75%
Solid Recovery Rate	≥ 95%	≥ 95%	≥ 95%

Construction Materials

Component	Small Model	Medium Model	Large Model
Bowl Material	Duplex SS 2205 / 316L	Duplex SS 2205	Super Duplex Stainless Steel
Scroll (Screw) Material	316L + Tungsten Carbide-tipped flights	316L + Tungsten Carbide-tipped flights	316L + Tungsten Carbide wear tiles
Frame/Base Material	Painted carbon steel or stainless steel	Painted carbon steel	Heavy-duty carbon steel structure

Power & Physical Dimensions

Parameter	Small Model	Medium Model	Large Model
Main Motor Power (kW)	15 – 30	37 – 75	90 – 160
Backdrive (Scroll) Motor Power (kW)	4 – 7.5	11 – 22	30 – 45
Length (mm)	2,500 – 3,500	3,500 – 4,500	4,500 – 6,000
Width (mm)	800 – 1,200	1,200 – 1,600	1,600 – 2,200
Height (mm)	1,000 – 1,400	1,400 – 1,800	1,800 – 2,300
Weight (kg)	2,000 – 3,500	4,000 – 8,000	9,000 – 15,000

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