National standard core parameters

According to "Pac for drinking water" (GB15892-2020), the key indicators include:

Alumina (Al₂O₃) content: liquid> or equal to 10%, solid> or equal to 29%, to ensure flocculation efficiency.

Salinity range: 40%-90%, which directly affects flocculation speed and stability.

Heavy metal limit: arsenic is less than 0.0002%, lead is less than 0.001%, cadmium is less than 0.0002%, mercury is less than 0.00001%, and hexavalent chromium is less than 0.0005%, to strictly ensure the safety of drinking water.

Water insoluble matter: liquid less than 0.2%, solid less than 0.6%, reduce impurity residue.

Physical and chemical property requirements

PH Value: The PH value of 10g/L aqueous solution is 3.5-5.0, which can adapt to different water quality conditions.

Solubility and appearance: the aqueous solution should be colorless and transparent (industrial grade solution is mostly yellow or brownish), and the solid is white to light yellow powder without lumps.

Health safety verification

It needs to pass the "Hygienic safety evaluation specification for Chemical Treatment agents of drinking water" test to ensure that the concentration of harmful substances brought into the water is less than 10% of the limit value in the "hygienic standard for drinking water".