Sludge Dewatering Test (PAC + Cationic PAM)

Sludge Dewatering Test (PAC + Cationic PAM)

Find the best PAC and PAM dosages for your sludge.

What You Need

Step 1: Find Best PAC Dosage

Step 1: Finding the Optimal PAC Dosage

Mix the sludge fully. Pour 1000 ml of sludge water into 6 beakers.

Add the PAC solution as follows:

Stir rapidly (200-300 rpm , about 30-60 seconds)

Stir slowly (40-60 rpm, about 2-5 minutes).

Let stand for 5-10 minutes.

Option the 1-2 beakers with the largest, densest flocs, find optimal PAC dosage.

Step 2: Find Best PAM Dosage

Treat all beakers using the optimal PAC dosage from Step 1 (e.g., beaker #6: 10 ml PAC).

Add different amounts of 0.2% PAM solution.

Stir slowly (40-60 rpm for 2-3 minutes).

Let stand for 10-20 minutes.

 Pick the beaker with:

✅ Largest, densest flocs

✅ Fastest settling

✅ Clearest supernatant

This is your optimal PAM dosage.

Critical Rules

Troubleshooting

Summary

6 beakers, same sludge (1L each)

Add PAC, then add PAM

Pick the beaker with the best flocs, fastest settling, and clearest water

That's your optimal dosage.