As a leader in China’s water treatment industry, Jiangsu Lanyao Water Treatment Co., Ltd., founded in 1996 and headquartered in Wuxi, Jiangsu Province, has consistently focused on the research and innovation of eco-friendly technologies. Recently, the company has leveraged its breakthrough in polyferric sulfate (PFS) technology to deliver efficient and sustainable wastewater treatment solutions for the papermaking industry, driving the sector toward greener and low-carbon development.
Polyferric Sulfate: The “Green Engine” for Papermaking Wastewater Treatment
Pulp and paper production generates wastewater containing high concentrations of organic matter, suspended solids, chromaticity, and heavy metals, posing significant environmental challenges. Jiangsu Lanyao’s polyferric sulfate products, renowned for their unique chemical properties and environmental benefits, have emerged as a critical solution for industrial wastewater treatment:
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High-Efficiency Decolorization and Suspended Solids Removal
Polyferric sulfate rapidly removes lignin, dyes, and other chromatic substances through charge neutralization, adsorption bridging, and sweep coagulation, achieving a decolorization rate of up to 96%. Its dense flocs effectively settle fibers and colloids, significantly reducing turbidity and chemical oxygen demand (COD), laying a solid foundation for subsequent biological treatment. -
Reduced Sludge Volume and Operational Costs
Compared to traditional ferrous sulfate, polyferric sulfate reduces dosage by 30%-50% and produces compact sludge with superior dewatering performance, lowering sludge disposal costs by over 20%. This advantage is particularly beneficial for large-scale paper mills seeking cost-effective solutions. -
Enhanced Environmental Compatibility
Polyferric sulfate operates effectively within a pH range of 6-11 without leaving residual aluminum ions, eliminating secondary pollution risks. The company’s latest modified polyferric sulfate (patented technology), enhanced by kaolin and talc composite modification, further increases COD removal to 75% and chromaticity removal to 96.9%, while reducing dosage by 15% compared to conventional products. -
Multi-Scenario Adaptability
The product is not only ideal for primary wastewater treatment but also optimizes sludge dewatering processes, replacing traditional agents like polyaluminum chloride (PAC) to improve efficiency.
Technological Expertise and Industry Empowerment
With nearly 30 years of experience in water treatment, Jiangsu Lanyao offers end-to-end services from R&D to application. Collaborating with research institutions, the company has developed tailored solutions for papermaking challenges:
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Intelligent Dosing Systems: Real-time water quality monitoring dynamically adjusts chemical dosage, ensuring stable performance and minimizing waste.
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Circular Economy Model: Advanced water reuse technologies help enterprises achieve “near-zero discharge,” aligning with China’s “14th Five-Year Plan” for energy conservation and emission reduction.
To date, the company’s solutions have been adopted by leading paper manufacturers. For instance, a paper mill in East China reduced annual sludge disposal costs by RMB 2 million and increased wastewater reuse rates to 80% after implementing Lanyao’s polyferric sulfate.
About Jiangsu Lanyao Water Treatment Co., Ltd.
Headquartered in Wuxi, Jiangsu Lanyao is a national high-tech enterprise specializing in the R&D and production of water treatment chemicals, equipment, and integrated solutions. With 10 core patents, its products serve high-pollution industries such as papermaking, printing, dyeing, and electroplating, reaching clients in over 30 countries. Moving forward, Lanyao remains committed to technological innovation and the principle that “lucid waters and lush mountains are invaluable assets,” contributing Chinese expertise to global environmental sustainability.
