News
News
Breaking News
Cost-Saving Guide for Sewage Station Operation & Maintenance: Pick the Right PAM to Avoid Unnecessary Pitfalls
For professionals engaged in sewage operation & maintenance and municipal sewage station management, it is common knowledge that municipal domestic
Polyacrylamide: An Efficient Solution for Hard-to-Settle Concentrator Wastewater
Operators of mineral processing plants and mines are well aware that wastewater generated from mineral separation ranks among their most
Polyacrylamide: An Efficient Solution for Turbid Papermaking Wastewater Treatment
Papermaking plant owners and wastewater treatment technicians all share the same headache: papermaking wastewater is notoriously difficult to treat. It
Full Breakdown of All Applications of Acrylamide Aqueous Solution
Professionals engaged in wastewater treatment, chemical engineering, building materials and mining industries frequently come across the term “acrylamide aqueous solution”,
Cationic Polyacrylamide – A Practical Eco-Friendly Raw Material for Wastewater Treatment Across Multiple Industries
Many people have heard of polyacrylamide manufactured in China, yet they struggle to distinguish between cationic and anionic variants, especially
Turbid washing sand wastewater with zero visibility? Anionic PAM delivers crystal-clear water instantly
Sand washing plant operators are plagued by a common headache: wastewater from sand washing turns thick and murky, loaded with
What is the difference between polyacrylamide powder and liquid?
The core difference between polyacrylamide dry powder and liquid lies in their form and dissolution method: dry powder requires dissolution before use, while liquid can be added directly; secondly, there is the issue of storage stability—dry powder is easy to store, while liquid requires protection against degradation.
Form and Usage (Most Crucial)
Dry Powder: Solid granules or powder, must be dissolved in water according to the specified ratio before use (usually takes more than 30 minutes) to form an aqueous solution before addition.
Liquid: Pre-dissolved aqueous solution or emulsion, no dissolution step required, can be directly diluted or added, saving operation time.
Storage and Transportation
Dry Powder: Low water content (usually <10%), small footprint, low transportation costs, can be stored for 1-2 years in a sealed, dry environment.
Liquid: High water content, large packaging volume, high transportation costs, and susceptible to degradation due to temperature; shelf life is typically only 3-6 months.
Cost and Applicable Scenarios
Dry Powder: Relatively low unit price, suitable for scenarios with large usage volumes and available dissolution equipment and time (such as large-scale wastewater treatment plants and oilfield extraction). Liquid: Higher unit price, but eliminates the dissolution process, suitable for small-volume applications and scenarios where convenience is important (such as small-scale emergency wastewater treatment and laboratory use).
How to choose the right polyacrylamide for your needs?
The selection of polyacrylamide requires comprehensive consideration of the application scenario, water quality characteristics, and operating conditions. The following is a detailed selection guide:
Selection Process
Step 1: Determine the Ion Type
Anionic: Suitable for alkaline wastewater containing inorganic suspended solids, such as mining and coal washing wastewater.
Cationic: For high-concentration organic wastewater and sludge dewatering, such as food processing and papermaking wastewater.
Nonionic: Suitable for acidic or high-salt wastewater, with strong resistance to electrolyte interference.
Step 2: Determine Water Quality Characteristics
pH Value: Choose cationic for acidic wastewater, anionic for alkaline wastewater, and nonionic for neutral wastewater.
Impurity Charge: Use cationic for negatively charged dye particles, and anionic for positively charged metal ions.
Step 3: Determine the Form: Powder or Liquid
Suitable Scenarios for Dry Powder:
Paper mills, mining beneficiation plants, and other places with large usage volumes.
Companies that are cost-sensitive and have corresponding dissolving equipment.
Users with limited storage conditions but requiring a long shelf life.
Suitable scenarios for liquid selection:
Small-scale wastewater treatment plants or laboratories.
On-site emergency wastewater treatment.
Situations requiring high ease of operation.
Step 4: Small-scale test
Take 100ml of water sample, add 0.5ml of different types of 0.1% concentration PAM solutions, and observe the floc formation rate and density within 3 minutes. Select the model with the best effect.
Important reminder: Avoid selecting solely based on molecular weight or ionic strength; the optimal model must be determined experimentally.