blog about New Wastewater System Cuts Pollution in Screen Printing Industry

The screen printing industry faces significant environmental challenges in its pursuit of sustainability, particularly regarding wastewater management during screen cleaning and reclamation processes. Even when using eco-friendly inks and chemicals, the untreated discharge of solid waste from these processes poses risks to both infrastructure and aquatic ecosystems.

Screen reclamation generates complex wastewater containing ink residues, emulsion fragments, and chemical byproducts. Traditional disposal methods often involve direct discharge, which fails to meet increasingly stringent environmental regulations and can cause long-term damage to drainage systems.

The Sgreen® Washout Filtration System addresses these issues through a comprehensive six-stage filtration process designed to intercept solid waste at its source. The system functions primarily as an "ink solids separator," delivering multiple benefits:

• Regulatory compliance: Reduces solid contaminants in wastewater to meet environmental standards
• Infrastructure protection: Minimizes pipe blockages and corrosion
• Operational efficiency: Reduces potential fines and treatment costs
• Sustainability credentials: Supports green manufacturing initiatives

The system's effectiveness stems from its sequential filtration approach, with each stage targeting different particle sizes:

Initial capture of large particles (emulsion chunks and ink clumps) using disposable filter fabric

Three-tier reusable mesh filtration:

• 86-mesh screen for medium particles
• 156-mesh screen for finer particles
• 200-mesh screen for microscopic particles

Industrial-grade submersible pump (1/3 HP, 115V) activates automatically when water reaches designated levels, providing 36 gallons per minute flow capacity

Two-stage precision filtration:

• 70-micron filter cartridge
• 20-micron filter cartridge (final output)

• 83-liter working capacity
• Stainless steel construction for durability
• 38mm drainage pipe connection requirement
• Increased maintenance needs for higher-volume operations

• Reduces water pollution and protects aquatic ecosystems
• Minimizes infrastructure damage from corrosive materials
• Lowers overall environmental footprint of printing operations

• Decreases maintenance and repair costs
• Helps avoid regulatory penalties
• Enhances production continuity
• Improves corporate sustainability profile

As environmental regulations become more stringent and consumer expectations evolve, such filtration solutions represent a strategic investment for screen printing businesses committed to sustainable operations.