Turn on the tap for a drink, or spot clear water flowing in a river. You might not realize what makes this water clean. It’s polyaluminum chloride (PAC), a polymeric material. This chemical agent looks ordinary enough. But it’s no longer just a simple “water purifier”. It has become a highly efficient, eco-friendly and intelligent water purification master.
PAC’s core strength lies in its unique “triple purification magic.” When added to wastewater, it rapidly hydrolyzes to form highly charged polymers, acting like a precise “charge neutralizer,” instantly destabilizing negatively charged impurities in the water. Then, it transforms into an “adsorption catcher,” forming stable complexes with heavy metals and pollutants through chemical reactions. A 3D flocculation net forms, trapping tiny particles completely. Its settling speed is 50% faster than traditional water purifiers.It adapts to a wide pH range of 4.0-9.5 and works stably even in low-temperature water, solving the common issue of environmental selectivity with other water purifiers.
Today’s PAC has long since shed its old image of being “high-energy-consuming and leaving residues.” Electrolytic synthesis technology cuts production energy consumption by 40%, with the core active ingredient content hitting a high of 85%.
Biological preparation technology enables chlorine-free residue – it uses Thiobacillus acidophilus to leach raw materials, driving the aluminum recovery rate above 90%.
In tough application scenarios such as metallurgical wastewater treatment, the material boosts arsenic removal rate to 99.8%, keeps heavy metal residues below ppm level and reduces sludge volume by 40%.
This truly achieves the goal of purification without secondary issues.
Many people worry about the safety of chemical agents. In fact, the oral LD50 for PAC in rats is 3730 mg/kg, far less toxic than table salt. As long as it is used properly, there is no need to worry. Its applications have long exceeded drinking water treatment, ranging from industrial wastewater purification to soil improvement, and even playing a role in sludge resource utilization. Sludge treated with PAC can be further processed into ceramsite, turning waste into treasure.
From traditional acid leaching to smart controlled production, from basic water purification to multi-functional pollution control. Polyaluminum chloride’s evolution mirrors the upgrade of environmental protection technologies. This silent “purification master” is protecting every drop of water around us with a greener and more efficient approach.