Metal Finishing Wastewater
Plate Settler Systems for Metal Finishing & Electroplating
Plate settlers for heavy metal precipitation and removal from metal finishing, electroplating, and surface treatment wastewater.
Metal Finishing Wastewater
Metal finishing operations (electroplating, anodizing, etching, phosphating) generate wastewater containing dissolved heavy metals, acids, alkalis, and suspended solids. Discharge limits for metals like chromium, nickel, zinc, and copper are extremely stringent.
The standard treatment approach is chemical precipitation (pH adjustment, metal hydroxide formation) followed by clarification. Plate settlers are ideal for this application because the metal hydroxide precipitates form dense, fast-settling floc that is efficiently captured by inclined plates.
R+F plate settler systems for metal finishing include integrated chemical dosing (NaOH, polymers), pH control, and sludge dewatering preparation. Stainless steel 316L construction ensures resistance to residual acid and alkali exposure.
Treatment Challenges & Solutions
Stringent Metal Limits
Achieve effluent metals concentrations below regulatory limits through precipitation and plate settling.
Mixed Metals
Multi-stage precipitation and settling for wastewaters containing multiple metal species.
Sludge Management
Dense metal hydroxide sludge requires proper handling and disposal as hazardous waste.
Request an Engineering Assessment
Our engineers will review your application, flow rates, and water quality data to recommend the optimal plate settler configuration.