Does polyaluminum chloride hydrolysis affect kaolin coagulation performance?

The effects of polyaluminum chloride (PACl) hydrolysis prior to coagulation on both the coagulation zone and coagulation performance of a kaolin suspension were investigated by a novel jar test named the “reversed coagulation test”.

Does PACL hydrolysis improve charge neutralization coagulation?

The tests showed that PACl hydrolysis prior to coagulation decreased the performance of charge neutralization coagulation in the case of short-time slow mixing (10 min; G = 15 sec − 1) and increased the optimal dosage for charge neutralization and sweep coagulation.

Can polyaluminum chloride be used in water treatment?

In this study, synthesis and speciation of polyaluminum chloride (PAC) for application in water treatment was investigated using a colorimetric speciation method. It was possible to produce stable preparations of PAC solutions in which a relatively stable cationic polymer predominated.

Can PACL hydrolysis be adapted under different operating conditions?

Based on the forcing hydrolysis characteristics of fine bubbles due to the adsorption of hydroxide ions on their surfaces, this study verified the adaptability of the forced PACl hydrolysis by fine bubbles under different operating conditions objectively and comprehensively.

Can PACL hydrolysis improve Doc removal efficiency?

The DOC concentration of micromolecular organics and the DOC removal efficiency of total organics could be reduced by 0.54 mg/L and enhanced by 12.6 %, respectively, after forced PACl hydrolysis by fine bubbles. Xiaojiang Huang: Writing – original draft, Formal analysis, Data curation.

Can fine bubbles force hydrolysis of PACL?

The main conclusions of this study were shown as follows: The results based on the Al-Ferron method showed that the fine bubbles had the ability to force hydrolysis of PACl with different alkalinity under different pH and Q g conditions.