Mining plant wastewater treatment
· Suspended solids removal rate > 98%
· Sludge reduction 50%
· Comprehensive cost reduction 30%
——The core weapon for mining environmental protection
Mining plant wastewater contains high concentrations of suspended solids, heavy metal ions and residual beneficiation agents.
Traditional treatment processes often face pain points such as slow sedimentation, large sludge volume and high operating costs.
In response to this challenge, we have innovatively launched a synergistic treatment process of polyaluminium chloride (PAC) and
polyacrylamide (PAM), which has been successfully applied to coal mines, gold mines, iron mines and other fields, helping
customers achieve stable and standard emissions at a lower cost.
Successful cases:
One of xinjiang’s Mining plant has reduced the annual consumption of PAM by 2 tons and PAC by 29 tons by optimizing the dehydration process, saving 90,000 RMB in reagent costs.
Below pictures are customer’s dosing system and site:
Analysis of the four-step synergistic treatment process of PAC+PAM
▶ Phase 1: PAC efficient charge neutralization
Add high-purity polyaluminium chloride (PAC), and its multi-core hydroxyl complex quickly neutralizes the negative charge on the surface of the colloidal particles, destroys the stability and forms micro-flocculation.
→ Technical advantages:
Wide adaptability: Maintains high activity in the pH range of 5-9, without frequent adjustment of pH
Economic efficiency: The dosage is reduced by 40% compared with traditional aluminum salts, and the cost of treating a ton of water is reduced by 25%
▶ The second stage: PAM enhanced flocculation and sedimentation
Adding anionic polyacrylamide (APAM), the micro-flocculation is condensed into dense flocs through the "bridging net capture" effect of long molecular chains, and the sedimentation rate is increased by more than 3 times.
→ Technical breakthrough:
According to the characteristics of iron ore wastewater, ultra-high molecular weight PAM is customized, the floc density is increased by 50%, and micron-level mineral powder is effectively intercepted.
Low temperature adaptability: High efficiency flocculation ability is maintained under 5℃ working conditions, solving the problem
of decreased treatment efficiency in high-cold mining areas in winter
▶ The third stage: deep solid-liquid separation
After flocculation, the wastewater enters the inclined tube sedimentation tank, the effluent turbidity drops to below 5NTU, and the suspended matter removal rate is >98%.
▶ The fourth stage: efficient dehydration of sludge
The precipitated sludge is conditioned with cationic polyacrylamide (CPAM) to destroy the colloidal structure and release bound water, and then dehydrated by a filter press. The sludge moisture content is reduced from 98% to below 75%, and the volume is reduced by 60%.
We provide a "technical closed loop" support system:
1. Free water quality analysis
2. Sampling sent
3. Planar and pilot tests
4. Provide PAC/PAM test kits and simulate treatment processes on site (such as inclined tube sedimentation test devices)
5.Sludge disposal optimization
6. Customize CPAM ionization to match filter press equipment parameters
Under the dual constraints of environmental protection red lines and cost pressures, we provide not only chemicals, but also a trinity of "meeting standards-reducing costs-increasing efficiency" mining wastewater treatment solutions. The choice of more than 200 mines around the world has verified the excellent reliability of the PAC+PAM synergistic process.
