As control over total-phosphorus discharge tightens across regions, traditional phosphorus-based scale inhibitors face restrictions in some applications, and phosphorus-free, biodegradable alternatives are gaining traction. PESA (Polyepoxysuccinic Acid) is a prime example: it contains no phosphorus and degrades readily in the natural environment, yet still delivers good scale inhibition and dispersion against calcium carbonate and calcium sulfate. It’s especially suited to industries sensitive to phosphorus in their discharge — papermaking, textiles, and surface-water replenishment, for instance.
In green formulations, PESA (Polyepoxysuccinic Acid) is typically paired with PASP (Polyaspartic Acid); both are biodegradable “green” water treatment chemicals that maintain a good scale-inhibition rate at low dosage. For export-oriented companies, these products pass European and American customers’ environmental audits more easily, and they fit the broader direction of reducing phosphorus and emissions on your own production line.