Research and testing laboratories generate small but complex wastewaters containing diverse chemicals. Learn about treatment solutions for lab wastewater management.

Laboratory Wastewater Sources

• Glassware washing: Detergents, residual chemicals
• Equipment rinses: Solvents, acids, bases
• Spill cleanup: Variable compositions
• Sample disposal: Small volumes, diverse compounds

Key Contaminants

• pH: Highly acidic or alkaline
• Heavy metals: Mercury, cadmium, lead, chromium
• Organics: Solvents, dyes, phenols
• Cyanide: From certain analytical procedures
• Pathogens: Microbiology labs

Treatment Technologies

Neutralization

• Acid/base neutralization tanks
• Automatic pH monitoring and dosing
• pH adjustment before discharge

Heavy Metal Removal

• Hydroxide precipitation
• Sulfide precipitation for mercury
• Ion exchange for chrome
• Activated carbon adsorption

Organic Removal

• Activated carbon adsorption
• Advanced oxidation (O3, UV/H2O2)
• Membrane filtration

Lab Management Practices

• Separate collection of waste streams
• Neutralization before dumping to drain
• Mercury collection and recycling
• Solvent recovery programs

Compliance

Meeting local sewer discharge limits:

• Local discharge limits
• Heavy metal standards
• pH range (6-9 typical)

Laboratory wastewater solutions? Contact us for lab waste management systems.

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