Mining Tailings Dewatering Horizontal Belt Filter

Mining Tailings Dewatering Horizontal Belt Filter

Category： Belt Filter
Energy Consumption: <15 kW/h
Water Recycling: Closed-Loop System
Noise Level: <65 dB
Certifications: CE
INQUIRY EMAIL

Belt filter press description

A belt filter press (BFP) provides sludge dewatering by pressing the sludge to force the water through a permeable medium. The process produces a cake (the dewatered product) having a dry solids (DS) content of 30% or more in the case of primary sludge. This is to be distinguished from the lower-energy gravity belt thickener process which achieves a maximum DS content of ~10%.

A BFP combines drainage and mechanical pressure sequentially to remove water. The equipment normally comprises 2−3 recirculating belts, with two belts combining at some point to compress the sludge and squeeze water from it.

Belt filter press principle

Material Input: The material is generally a slurry that includes solid particles and liquid residing within the mixture. This material is fed to the belt press.
Transport: The system transports material evenly in a porous belt. In addition, this belt, typically made from a strong fabric or synthetic material, allows fluids to drain while retaining solids.
Roll Pressure: The system rolls the material (known as roll pressure) through a series of rollers, each with increasing amounts. Additionally, between these rollers, the belt moves, pressing the material against one aspect and thereby forcing any liquid out.
Dewatering: As the material travels throughout the press, the system expresses water into a tray. Meanwhile, the system allows the rest of the solid, which is now considerably drier, to keep creeping down.
Filter cake (solids): The system dehydrates the sludge and discharges it at the end of the press. And then it’s either for further processing or for disposal.

Belt filter technical sheet

<span style="font-family:Verdana;">Sludge Types Table</span>

Sludge Kinds	Input Concentration %	Capacity m³/h	DS Capacity kg/h	Moisture of Cake %	PAM Consumption %(DP/DS)
Unconcentrated Aerobic Sludge	0.5~1.5	15~30	150~300	~80 (+2)	2~5
Concentrated Aerobic Sludge	2~4	6~12	200~300	~80 (+2)	2~5
Digested Sludge	3~6	7~15	300~400	<80	2~5
Unconcentrated Primary Sludge	0.8~2.0	18~35	300~400	<80	2~5
Concentrated Primary Sludge	3~5	6~12	300~400	<80	2~5
Paper-making Activated Sludge	0.5~2.5	15~35	200~400	<78	3~7
Printing and Dyeing Mixed Sludge	1~3	10~25	180~350	75~78	3~10

Model selection

Model	Belt Width	Sludge Concentration	Outlet Concentration	Capacity	Power
DNT-1000	1000mm	2-4%	15-25%	6-12	1.49kW
DNT-1500	1500mm	2-4%	15-25%	12-15	2.05kW
DNT-2000	2000mm	2-4%	15-25%	15-25	2.6kW
DNT-2500	2500mm	2-4%	15-25%	35-50	4.1kW

Belt Filter Press Advantage

Material of Construction
FRC Belt Presses are constructed using high-end stainless steel, which is resistant to corrosion, can be installed indoors or outdoors, and is extremely durable and long lasting. Depending on the application, we can accommodate various alloys including Stainless Steel 316ti and Duplex Stainless Steel.
Compact Footprint
Minimizing footprint is always an important factor in designing dewatering systems. FRC belt press systems stack the dewatering zones, which creates a much smaller footprint than our competitors’ linear design.
Complete Belt Press Systems
Belt press applications can be enhanced with auxiliary equipment such as:
Sludge feed pump
Polymer Dosing System
Flocculators/Plug Flow Reactor (PFR)
Continuous-Stirred Rank Reactors (CSTR)
Wash water pump and tank
E-Panel with PLC & HMI

Belt filter press features

Belt press filters are designed for solids capacity, by weight or volume, rather than wastewater flow. Solids concentration must be determined based on the concentration of primary solids in the feed and further solids that may precipitate during treatment. Solids concentration for a process will vary, thus the design must have the capacity to deal with varying feed solids concentration.

The feed to a belt press filter depends on the type of solids, desired product and filter design. For most sludge types the feed dry solids concentration is typically in the range of 1-10%. The resulting dewatered sludge (or cake) dry solids concentration typically falls in the range of 12-50%. Dilute feed solids concentration results in a cake of higher moisture content whilst a higher feed solids concentration yields an improved solids filtration rate and drier end product.

Belt filter press applications

Municipal:

Raw: Primary, Primary & Trickling filter, Primary & WAS, WAS, Contact Stabilization, Primary & RBC
Anaerobically Digested: Primary, Primary & Trickling filter, Primary & WAS, Primary & RBC
Aerobically Digested: Oxidation Ditch, Primary & Activated, Contact Stabilization, Extended, Primary & RBC, WAS
Potable Water Plant: Alum Sludge, Lime Softening Sludge, River Water Silt