Polyaluminum chloride（PAC） is the most technologically mature and marketable flocculant for papermaking wastewater treatment in the world, and has gradually replaced traditional coagulants such as Al2 (SO4) 3 and FeCl3. In 1976, Western European countries began producing polyaluminum chloride as a water treatment flocculant; In 1983, the United States and Canada also approved the use of polyaluminium chloride（PAC)） for urban water supply and industrial wastewater treatment. In China, the flocculants used for pulp and paper wastewater treatment in the past were mainly Al2 (SO4) 3 and FeCl3, but these flocculants generally have disadvantages such as high cost, difficulty in crushing solid raw materials, high corrosiveness, high equipment maintenance costs, and high labor intensity for workers.However, poly aluminum chloride has the advantages of good coagulation performance, large flocs, low dosage, high efficiency, fast sedimentation, and wide adaptability. PAC can reduce dosage by 33.3% to 50.0% and cost by more than 40%. Polyaluminum chloride has become a recognized excellent water purifier both domestically and internationally.
Polyaluminum chloride(PAC), as a product with mature application technology, superior performance, and low price, has gradually been favored by paper companies in recent years. Because the use of PAC in the papermaking process can improve the quality of paper products and reduce paper product costs. For example, the use of Polyaluminum chloride PAC for advanced treatment of papermaking wastewater can achieve CODCr discharge standards at a lower cost; Under the policy of energy conservation and emission reduction, the use of polyaluminum chloride treatment flow system for white water can effectively achieve closed circulation of white water without causing the accumulation of colloidal anionic waste in paper pulp and white water systems; The use of polyaluminum chloride in high-performance intermediate and alkaline sizing can improve the sizing effect and prevent hydrolysis products from contaminating paper pulp, white water systems, and paper machine fabrics.
With the rapid development of the paper industry, the use of polyaluminum chloride in the paper industry will become increasingly widespread and the amount used will also increase. Meanwhile, with the emergence of high-purity poly aluminum chloride, its superior performance has been fully demonstrated. In the current unfavorable economic situation, PAC is more worthy of promotion and application in the paper industry.
Lanyao Water Treatment Co., has nearly 30 years experience for polyaluminum chloride(PAC)，including solid and liquid pac.
White polyaluminum chloride(PAC)
