How to Determine When Polyacrylamide Has Degraded? These Tips Will Help You Avoid Pitfalls!

In industries such as water treatment, papermaking, and oilfields, polyacrylamide (PAM) serves as a reliable workhorse. However, it has a shelf life. Once it expires, it not only compromises performance but can also disrupt production and drive up costs. Today, we’ll share a few quick tips to determine if your polyacrylamide has gone bad, helping you avoid pitfalls and prevent costly mistakes! I. Visual Inspection: Quickly Spot Abnormalities Undissolved polyacrylamide should appear as dry white powder or granules with good flowability. If the powder shows severe moisture absorption and clumping—so hard it barely breaks apart when squeezed—it has likely deteriorated. The dissolved solution also reveals clues: a properly dissolved solution is uniformly transparent. If it appears cloudy, separates into layers with suspended particles floating on top and sediment settling below, don’t hesitate—this solution is most likely ineffective and won’t perform flocculation or thickening functions properly. II. Testing Effectiveness: Practice Reveals Truth “Performance is proven by application.” To gauge polyacrylamide‘s efficacy, test it in actual systems: – Flocculation Speed: Under normal conditions, floc formation and growth should be visible shortly after addition. If flocculation slows significantly—with no floc formation after waiting—raise concerns. – Floc morphology: Ineffective polyacrylamide produces small, loose flocs resembling “scattered sand,” settling slowly and failing to achieve rapid solid-liquid separation. – Water quality indicators: During water treatment, monitor parameters like turbidity and COD. If water quality shows no significant improvement after addition—turbidity remains high or COD exceeds standards—it strongly indicates the polyacrylamide has “stopped working.” In sludge dewatering scenarios, persistently high moisture content in the sludge cake also signals potential failure. III. Check the Time, Don’t Exceed the “Shelf Life” – Prepared Solutions: Dissolved polyacrylamide solutions have a relatively short “lifespan,” and it’s generally recommended to use them within 24 hours. Especially in high-temperature environments (such as summer workshops or storage areas without temperature control), the polymer molecular chains are prone to degradation, causing a “plunge” in performance. Even if prepared only recently, they may become ineffective. – Unopened products: Even sealed polyacrylamide has a shelf life! Typically 1-2 years, but this depends on storage conditions. Exposure to high temperatures, humidity, or direct sunlight can cause premature degradation, even before the expiration date. Under optimal storage conditions (cool, dry, well-ventilated), shelf life remains relatively stable. However, use expired products with caution—conduct small-scale tests first to assess suitability. IV. What to Do When It Expires? Don’t Panic! If you discover polyacrylamide has expired, never continue using it out of reluctance. Doing so may compromise production efficiency at best, or lead to water quality violations and equipment failure at worst. The correct approach is: 1. Discontinue use of the ineffective product: Immediately stop adding the degraded polyacrylamide to prevent further damage. 2. Re-evaluate and conduct small-scale tests: Switch to a qualified polyacrylamide product. Follow the small-scale testing procedure (adjust concentration, dosage, and simulate actual operating conditions) to determine optimal usage parameters before formal application. Failed polyacrylamide can hinder production. Mastering these identification methods enables timely detection and resolution, ensuring it remains effective and supports production! Have you ever encountered polyacrylamide failure during use? The main products of flocculant manufacturer Xinhuan Water Treatment are: White polyaluminium chloride (food grade), drinking grade polyaluminium chloride, industrial grade polyaluminium chloride, anionic polyacrylamide, cationic polyacrylamide, nonionic polyacrylamide, petroleum recycling polyacrylamide, oil recovery polyacrylamide, polyacrylamide, polymer flocculant polymer flocculation coagulant, polymeric ferrous sulphate, polymerized iron and aluminium chloride, and other water treatment chemicals. Welcome customers to write to us to negotiate business! Tel/WhatsApp：86 19139972558 Email：Sunny@xhwtm.com Contact:Sunny