A compound alkali is a chemical preparation made by mixing two or more alkaline compounds (such as sodium hydroxide, calcium hydroxide, sodium carbonate, etc.) in a specific ratio. Compared with traditional single alkalis, its advantages are:
Synergistic effect: Different alkaline components complement each other, resulting in more stable pH adjustment. For example, calcium hydroxide has low solubility but low cost; mixing it with sodium hydroxide can improve its solubility.
Multifunctionality: It has multiple chemical functions, including neutralization, precipitation, and desulfurization.
Economy: Raw materials are readily available, and production costs are 10%-30% lower than those of single alkalis (Data source: 2022 Research Report on Industrial Water Treatment).
