Shajiao C coal-containing wastewater project

Project Background:

Yudean Shajiao C Power Plant, located in Guangdong Province, China, operates with three 660MW generating units. The plant utilizes an open-pit coal yard for storage, generating coal-containing wastewater during transportation. With heavy rainfall and strict environmental regulations in the Pearl River estuary area, the existing multi-stage sedimentation and flotation treatment system faced

Challenges:

1. Limited Capacity: Designed to handle 280 tons per hour (t/h), the system became overloaded during the rainy season when wastewater flow exceeded 300 cubic meters per hour (m³/h).
2. Inefficient Treatment: The effluent failed to meet the "Integrated Wastewater Discharge Standard" (GB8978-1996) first-level discharge requirements.
3. Large Footprint: Occupying over 6,000 square meters, the existing system shared space with boiler wastewater treatment, limiting available space for upgrades.

Solution:

To address these issues, the plant implemented the HDCY integrated multi-effect clarification system developed by Beijing Huade Ventures.

This innovative system offers several key advantages:

• Compact Design: Covering only 60 square meters, the modular design requires minimal space compared to the traditional system.
• Advanced Technology: The system integrates various water treatment technologies, including chemical coagulation, mechanical stirring, loading sedimentation, and inclined tube separation. This comprehensive approach ensures efficient removal of suspended solids, heavy metals, and other pollutants.
• Fast and Cost-Effective: The modular construction allows for rapid installation within 45-60 days, while the processing cost is only 0.13 yuan/ton.

System Features:

• Applicable Industries: Mine water, mineral processing wastewater, steel/metallurgical wastewater, coal-containing wastewater, municipal sewage, etc.
• Core Components: Coagulation reaction tank, flocculation reaction tank, pre-sedimentation area, inclined tube separation area, medium recovery area (all components covered by a one-year warranty)
• Product Size: Customized based on processing volume
• Motor Power: Varies depending on equipment size
• Productivity: 30,000 tons per day (T/d)
• Weight: Dependent on equipment size

Benefits:

• High Efficiency: The system achieves effluent suspended solids less than 10 ppm and turbidity less than 1 NTU, enabling reuse of the treated wastewater.
• Large Processing Capacity: A single unit can handle a large volume of wastewater with a residence time of only 8 minutes, making it the world's leader in treatment capacity per unit volume.
• Low Investment: The modular design minimizes civil construction needs, reducing project costs.
• Low Operating Costs: The system utilizes cost-effective technology, ensuring low operational expenses.

Project Outcomes:

The HDCY integrated multi-effect clarification system not only maintains the advantages of high speed, compactness, good effluent quality, strong impact resistance, and saving operating costs of the loading sedimentation tank, but also increases the flexibility of operation and operation, eliminating suspended solids, heavy metals and other substances in the water. It settles in the form of flocs, thereby achieving qualified water discharge effect.