Guizhou Phosphate Mine Mine Water Inrush Treatment Project

Project Background:

The project is designed to address the challenge of exceeding discharge standards due to high levels of suspended solids, total phosphorus, and organic matter in the wastewater generated by the mine.

Processing Capacity:

The project is designed for a two-phase implementation with a total wastewater treatment capacity of ≥30,000 cubic meters per day (m³/d).

Phase I: 15,000 m³/d
Phase II: 15,000 m³/d

Challenges:

The raw wastewater from the mine shaft exceeded discharge standards due to:

• High levels of suspended solids
• Elevated total phosphorus concentration
• Presence of organic matter

Treatment Requirements:

The treated effluent after water treatment must meet the following stringent standards simultaneously:

First-level standards of the "Comprehensive Wastewater Discharge Standard" (GB8978-1996)
"Notice on the Implementation of the Special Discharge Limits of Total Phosphorus for Water Pollutants from Phosphorus-Related Enterprises in Guizhou Province"
Relevant limits specified in the "Guizhou Province Environmental Pollutant Emission Standards" (DB52/864-2013)
This case study highlights the need for a robust and multi-stage treatment process to address the specific challenges of phosphate mine water inrush and ensure compliance with regulatory discharge requirements.