Can poly-Aluminium chloride coagulant remove turbidity from water?

Partial Replacement of Alum by Using Natural Coagulant Aid to Remove Turbidity from Institutional Wastewater. International Journal of Integrated Engineering, 12(4), 241–251. Liu, S., Zhuang, X., Wang, C. (2021). Application of Poly-Aluminium Chloride Coagulant in Urban River Water Treatment Influenced the Microbial Community in River Sediment.

Is Pac better than alum?

Even though the difference is too small, it is concluded that PAC has better performance and is more efficient compared to Alum due to its better coagulation performance. In addition, PAC produces lesser residual Aluminium and required a lesser amount of dosage. This may reduce cost and therefore save overall operating costs.

Which coagulant is more efficient PAC or alum?

A pH adjustment test, turbidity test and the residual Aluminium test were conducted for both coagulants and six jar test readings were recorded to plot the comparison graph between PAC and Alum coagulants. The results showed that PAC is more efficient with 83.74% as compared with Alum which has an efficiency rate of 83.35%.

Do coagulants increase the concentration of aluminium in water after coagulation?

Analysis of the relationship presented in Table 2 showed that both coagulants, PAC and Alum caused an increase in the concentration of Aluminium in the water following the coagulation process. However, at the optimum dosage, PAC indicates lower residual Aluminium with 0.026 at 23 mg/L compared to the Alum value.

Does PAC perform well with high turbidity level compared to Alum?

It also shows that PAC can perform well with a high turbidity level and a wide pH range from 7 to 8, when compared to Alum (Kumar & Balasundaram, 2017). Therefore, it is beneficial to explore the PAC performance in the water supply treatment process.

Are PACL coagulants a good coagulant?

Results from the pilot-scale study indicate that most PACls were as or more efficient a coagulant as alum for direct filtration of surface water without requiring acid addition for pH adjustment and subsequent base addition for re-stabilizing the water.