How to dissolve the poly aluminium chloride (PAC) powder ?
How to dissolve the poly aluminium chloride (PAC) powder ?
To dissolve Poly Aluminium Chloride (PAC), follow these general guidelines for proportion and method:
Proportion
1. Typical Dosage:
- For drinking water treatment: 5 to 50 mg/L (depending on water quality).
- For wastewater treatment: 20 to 200 mg/L (based on specific conditions).
2. Preparation:
- A common working solution concentration is around 1-10% PAC (weight/volume).
Method for Dissolving PAC
1. Safety Precautions:
- Wear appropriate PPE (gloves, goggles, mask).
2. Equipment Needed:
- Clean mixing container (preferably non-metallic).
- Stirring device (mechanical or manual).
3. Dissolution Process:
1.Add Water: Start with clean, room temperature water.
2. Gradually Add PAC**: Slowly add the PAC powder to the water while stirring continuously to prevent clumping.
3. Mix Thoroughly**: Continue stirring until the PAC is fully dissolved, forming a homogeneous solution. This may take several minutes.
4. Adjust Concentration**: If needed, adjust the PAC concentration by adding more water or PAC to achieve the desired dilution.
4. Storage:
- Store the dissolved PAC solution in a clean, closed container, and use it within a reasonable time to maintain effectiveness.
Note
- Always conduct a jar test to determine the optimal PAC dosage for specific applications and conditions.
