Electroplating Wastewater Metal Recovery Belt Filter Press

Electroplating Wastewater Metal Recovery Belt Filter Press

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

A Belt Filter Press is a sludge dewatering device that applies mechanical pressure to a chemically conditioned slurry, which is sandwiched between two tensioned belts, by passing those belts through a serpentine of decreasing diameter rolls. The machine can actually be divided into three zones: the gravity zone, where free draining water is drained by gravity through a porous belt; the wedge zone, where the solids are prepared for pressure application; and the pressure zone, where medium, then high pressure is applied to the conditioned solids.

Belt filter press principle

Sludge mixed with polymer is introduced.
The mixture gradually rises where the polymer and sludge separate.
Mixture is evenly and gently spread across belt width by the leveling baffle.
The mixture “pools” and then is conveyed upward during which time free water drains through the belt. The thickening process can be aided by the use of ploughs.
Thickened sludge is trapped between the two screens and gradually subjected to increasing pressure.
Shearing and compression occurs as the sludge travels around rolls of decreasing diameter due to the forces exerted by the independent pneumatic tensioning of both belts.
The dewatered sludge is discharged away from the belts which is then doctored and washed before returning to accept more sludge.

Belt filter technical sheet

Sludge Kinds	Input Concentration %	Capacity m3/h	DS Capacity kg/h	Moisture of Cake %	PAM comsuption %(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	less than 80	2~5
Unconcentrated Primary Sludge	0.8~2.0	18~35	300~400	less than 80	2~5
Concentrated Primary Sludge	3~5	6~12	300~400	less than 80	2~5
Paper-making Activated Sludge	0.5~2.5	15~35	200~400	less than 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

Cost-effective installation: Economical to install, providing a budget-friendly dewatering solution.
Efficient energy use and automatic operation: Designed for minimal power requirements, it ensures low energy consumption and can operate automatically, reducing the need for continuous supervision.
Low operating costs: With its efficient design and operation, the BFP keeps operating costs to a minimum.
High capacity in a small footprint: Provides high dewatering capacity with minimal space requirements, making it ideal for facilities with limited space.
Good dewatering results: Delivers good dewatering performance, ensuring effective sludge management.

Belt filter press features

A choice of 2 or 3 belt dewatering systems with standard, extended, or independent gravity zones for consistently high cake solids in varying sludge conditions.
When higher hydraulic sludge capacities need to be treated, the drainage zone is extended by installing a thickening stage before the actual dewatering process
Increase of the effective filtration areas.
Innovative low pressure zone concept consisting of a big diameter perforated roll substitution in the traditional wedge area.
Effective high pressure zone (increase of pressure intensity and time).
The possibility to install 5-7-9-11 rolls in final high pressure zone allows the machine to be configured per the application characteristics and required performance.

Belt filter press applications

Municipal and industrial sludge: Suitable for treating sludge from a variety of municipal and industrial sources.
Production By-Products: Efficiently treats by-products from the chemical, food and paper industries.
Mineral Industries
Mine Tailings Dewatering
Drilling and Tunneling
Sand, Clay and Mud
Abattoir, rendering plants and tanneries