Polyacrylamide (PAM) is commonly used in the field of water treatment as a chemical with coagulation properties, widely employed in treating various types of water including drinking water, industrial water, and wastewater. This article will introduce three main types of PAM (anionic, cationic, and nonionic) and provide usage guidelines and safety precautions.
- Introduction
Anionic PAM: Polymer with a negative charge, effectively adsorbs suspended solids and impurities in water, promoting their precipitation and filtration.
Cationic PAM: Polymer with a positive charge, suitable for treating negatively charged suspended solids such as soil particles, organic matter, etc.
Nonionic PAM: Neutral polymer, suitable for treating water with high pH values or situations sensitive to ions.
- Usage Guidelines
Addition methods: Options include direct addition, addition of pre-dissolved solutions, or addition via chemical pumps.
Dosage selection: Determine the optimal dosage based on water quality, degree of contamination, and desired coagulation effect.
Mixing time: Sufficient mixing time should be provided after addition to ensure adequate reaction between PAM and pollutants, forming coagulants.
- Safety Precautions
Wear protective equipment: Including gloves, goggles, and protective clothing to prevent chemical contact.
Avoid inhalation: Especially of dust or gas in high concentration solutions.
Storage precautions: Store in a dry, well-ventilated area, away from sources of ignition and oxidizing agents.
Emergency measures: In case of accidental contact, immediately rinse with plenty of water and seek medical attention.
When using PAM, it is crucial to follow specific guidance and safety procedures provided by the manufacturer to ensure safe and effective operations.
