with the type of waste (e.g., “Hazardous Solvent Waste,” “Biological Waste”).

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Collection Guidelines:

• Use leak-proof, chemical-resistant containers for hazardous liquid waste.
• Transfer non-hazardous liquid waste directly to designated holding tanks or drains connected to the treatment system.
• Avoid mixing incompatible waste types (e.g., acids and bases).

Documentation:

• Record the type, quantity, and source of liquid waste in the Liquid Waste Log (Annexure 1).

4.3 Storage of Liquid Waste

1. Storage Area Requirements:
   • Designate separate storage areas for hazardous and non-hazardous liquid waste.
   • Ensure areas are well-ventilated, labeled, and equipped with spill containment systems.

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2. Storage Containers:
   • Use corrosion-resistant containers for storing hazardous liquid waste.
   • Inspect containers regularly for leaks or damage and replace as needed.
3. Safety Precautions:
   • Store incompatible wastes separately to prevent chemical reactions.
   • Ensure storage areas are equipped with emergency spill kits and fire extinguishers.

4.4 Treatment of Liquid Waste

1. Pre-Treatment:
   • Filter solids and suspended particles using sedimentation or filtration systems.
   • Neutralize pH imbalances in acidic or alkaline waste streams before further treatment.

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2. Primary Treatment:
   • Use chemical precipitation or coagulation methods to remove heavy metals and suspended solids.
   • Apply oil-water separators to remove oils and greases from wastewater.
3. Secondary Treatment:
   • Apply biological treatment methods such as:
     • Aerobic digestion
     • Activated sludge processes
4. Tertiary Treatment:
   • Use advanced treatment methods such as reverse osmosis or UV disinfection to meet discharge standards.

4.5 Disposal of Treated Liquid Waste

1. Discharge Guidelines:
   • Ensure treated liquid waste complies with discharge standards for pH, BOD, COD, and heavy metal content.
   • Discharge compliant waste into municipal sewage systems or natural water bodies with approval from local authorities.

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2. Vendor Management:
   • Partner with authorized waste disposal vendors for hazardous liquid waste.
   • Obtain disposal certificates for compliance documentation.

4.6 Monitoring and Compliance

1. Conduct regular testing of liquid waste samples to monitor parameters such as:
   • pH levels
   • Biochemical Oxygen Demand (BOD)
   • Chemical Oxygen Demand (COD)
   • Heavy metal concentration

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2. Document test results and submit periodic reports to regulatory authorities.

4.7 Emergency Spill Management

1. In Case of Spills:
   • Isolate the affected area and contain the spill using absorbents or spill kits.
   • Notify the Safety Officer immediately.

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2. Decontamination:
   • Clean and disinfect the spill area thoroughly.
   • Dispose of spill cleanup materials as hazardous waste.

5) Abbreviations, if any

• BOD: Biochemical Oxygen Demand
• COD: Chemical Oxygen Demand
• PPE: Personal Protective Equipment

6) Documents, if any

• Liquid Waste Log
• Disposal Certificates
• Testing Reports

7) Reference, if any

• Environmental Protection Act (EPA) Guidelines
• Central Pollution Control Board (CPCB) Standards
• ISO 14001 Environmental Management Systems

8) SOP Version

Version: 1.0

Annexure

Template 1: Liquid Waste Log

 
 
 
Date
 
Waste Type
 
Quantity (Liters)
 
Source
 
Storage Location
 
Handled By
 
 
 
DD/MM/YYYY
 
Hazardous Solvent Waste
 
500
 
Production Unit 1
 
Storage Tank 3
 
John Doe