How is a polyaluminium ferric chloride flocculant prepared?

A highly efficient polyaluminium ferric chloride (PAFC) flocculant was prepared by adjusting the pH of a leaching solution, the molar ratio of Al to Fe, and the polymerisation temperature. The effects of synthesis and flocculation conditions on the flocculation performance of aged landfill leachate were investigated.

Can a PAFC flocculant be used for wastewater treatment?

Based on these results, it can be concluded that a PAFC flocculant has significant potential for use in the pre-treatment and purification of wastewater. Table 1. Comparison of the effects of different flocculants for wastewater treatment.

What types of water flocculants are used in domestic sewage treatment?

In the treatment of the domestic sewage, there are two types of the water flocculants: the PAM ( Polyacrylamide) and the PAC (Polyaluminium Chloride). The domestic sewage is the waste water which is directly discharged by the residents in the daily life, the major component is the stool and the washing waste water.

Can red mud be used to synthesise polyaluminium ferric chloride (PAFC) flocculant?

Red mud was used to synthesise polyaluminium ferric chloride (PAFC) flocculant. The COD and TOC of PAFC to landfill leachate were 72.2% and 82.6%, respectively. PAFC have advantages over commercial PAFC in settlement velocity and TOC removal efficiency. In this study, red mud was used as a raw material to extract Al and Fe using hydrochloric acid.

Does PAFC flocculation affect the performance of cpafc on landfill leachate?

The supernatant obtained via PAFC flocculation treatment was lower than the concentration of Al (0.2 mg/L) and Fe (0.3 mg/L) set out in the Chinese drinking water sanitation standard GB5749-2006. The flocculation indexes measured confirmed that the flocculation performance of PAFC on landfill leachate could reach the effect of CPAFC.

What is polyaluminum chloride?

[English name] Polyaluminium Chloride, abbreviated PAC. [Technical standard] Product quality in line with national GB15892-2003 standard. Compared with other coagulants, polyaluminum chloride has the following advantages: wide application range, wide adaptability to water. Easy to quickly form large alum flower, good precipitation performance.