Sinopec Yangzi Petrochemical Co., Ltd. has successfully commissioned its Wastewater Treatment and Water Conservation Project, with Hanqi Environment serving as the specialized subcontractor and technical partner. Working closely with general contractor Sinopec Nanjing Engineering Co., Ltd., Hanqi delivered critical contributions to the project’s advancement.

Hanqi’s core process package has passed rigorous acceptance inspections by both the owner and EPC contractor, providing pivotal technical support for Yangzi Petrochemical’s environmental upgrade and water conservation goals.

Technical Solutions Deployed:

1. Circulating Water Blowdown Treatment System

   • Utilized Multi-effect High-Density Sedimentation Tank technology

   • Achieved simultaneous removal of:
     ✓ Hardness
     ✓ Nitrogen compounds
     ✓ Suspended solids
     ✓ Partial organics

   • Demonstrated high load/shock resistance

   • Ensured stable effluent compliance

2. RO Concentrate Treatment System

   • Integrated High-Density Clarifier + Denitrification Filter

   • Employed:
     • Special cast filter plates
     • Proprietary bio-media (optimized microbial growth)

   • Key innovations:
     ✓ Enhanced total nitrogen removal
     ✓ Optimized filter nozzles & tank materials
     ✓ Improved system stability

Partnership Milestone:
This project extends Hanqi and Yangzi Petrochemical’s successful collaboration since 2020, reconfirming Hanqi’s expertise in petrochemical wastewater treatment.

Engineering Excellence Highlights:
• Circulating Water System: Addressed scaling/sludge issues through:

• Structural modifications to sedimentation tanks

• Equipment parameter optimization
  → Ensured long-term stability & low maintenance costs
  • RO Concentrate System: Achieved comprehensive water quality improvement via:
  Primary treatment + Advanced purification integration

Future Commitment:
Adhering to our Long-Term Philosophy, Hanqi will:
• Advance environmental technologies
• Deliver customized solutions for Yangzi and other enterprises
• Support high-quality development of the Yangtze River Economic Belt
• Contribute to ecological protection and sustainable future building