Hanqi Environment has been granted another national invention patent, addressing critical challenges in coal chemical wastewater treatment.

Solving Industry Pain Points:
Efficient and clean coal utilization remains a significant technical challenge in China’s environmental sector. With rapid growth in coal chemical industries, upgrading wastewater treatment—especially for black water and gray water from coal gasification—is urgent. This wastewater typically suffers from:

• High temperature & high hardness

• High suspended solids

• Poor settleability

Innovative Solution Highlights:
Hanqi’s patented technology processes post-settling gray water through a multi-functional reaction zone, achieving:

• ↓ Reduction in total hardness, silica, fluoride, and salinity

• ↓ Prevention of scaling in downstream systems

• ↑ Stabilized gasification system operation

• ↓ Reduced wastewater discharge from 20-30% to ~10%, easing pressure on treatment plants

• ↓ Minimized/dispensed dispersant & antiscalant dosage

• ↓ Lower chemical and operational costs

• ↑ Enhanced energy efficiency and sustainability

Proven R&D Excellence:
To date, Hanqi holds 56 patents (20 inventions + 36 utility models), all independently developed with full IP ownership. Our Tianjin R&D Center features:

• Advanced lab/testing equipment

• Pilot-scale simulation systems

• Tailored solutions for complex project challenges

Decade of Specialized Expertise:
For over 10 years, Hanqi has focused on wastewater treatment for petroleum & chemical industries, delivering 100+ successful projects globally.