PAC PAC Concentration Method:
The first step, according to the water, before using a small test optimal dose. Test solution by weight (w/w), with 2~5% distribution as well. As with 3% solution: solid 3G PAC PAC, poured into the 200ml in the graduated cylinder, jiaqingshuiyue 50ml, be dissolved and diluted with water to 100ml the scale again, shake the can.
The second step, when using PAC PAC, PAC PAC solids: water weight ratio can be mixed with =1:9 to 1:15. Easy hydrolysis of aluminium oxide content of less than 1% solution, it will reduce the effects, the concentration is too high is not easy to add uniform.
The third step, dosing small try to get the best dosages dosing. See less sedimentation alum, turbidity, the dosage too low; see alum of sedimentation tank and turn up, high residual turbidity, excessive dosage should be adjusted.