As a pioneer in China’s water treatment sector, Jiangsu Lanyao Water Treatment Co., Ltd., founded in 1996, has consistently driven environmental protection and sustainable water resource management through technological innovation. Headquartered in Wuxi, Jiangsu Province, the company leverages nearly three decades of industry expertise to develop a series of efficient and cost-effective wastewater treatment solutions centered on calcium chloride, providing critical support for water purification in industrial and municipal sectors.
Calcium Chloride: A Versatile Solution for Water Treatment
Calcium chloride, a fundamental inorganic salt, demonstrates multifaceted functionalities in water treatment due to its chemical properties. Through scientific formulation and process optimization, Lanyao Water Treatment has expanded its applications to the following scenarios:
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Efficient Fluoride and Phosphorus Removal, Blocking Pollution at the Source
Excessive fluoride (F⁻) and phosphorus (PO₄³⁻) in industrial wastewater pose long-term risks to human health and ecosystems. Lanyao utilizes calcium ions (Ca²⁺) in calcium chloride to react with F⁻, forming calcium fluoride (CaF₂) precipitates, reducing fluoride concentrations from three times the national limit to one-third of the standard. For eutrophication control, calcium ions bind with PO₄³⁻ to generate calcium phosphate precipitates, slashing total phosphorus levels from 5 mg/L to below 1 mg/L, effectively mitigating algal bloom risks. -
Sludge Dewatering and Volume Reduction, Cutting Treatment Costs
Sludge from wastewater treatment typically contains 90% moisture, complicating disposal and inflating expenses. By adding calcium chloride, Lanyao disrupts sludge particle stability via calcium ions, accelerating aggregation and sedimentation. Combined with press filtration, this reduces moisture content from 80% to below 70%, lowering sludge processing costs by over 30%. -
pH Regulation for Stable Downstream Processes
Industrial wastewater with fluctuating pH levels often hampers microbial treatment efficiency. While calcium chloride is neutral, its calcium ions synergize with hydroxide (OH⁻) or hydrogen ions (H⁺) to stabilize pH at near-neutral to alkaline ranges (pH≈7–9), ensuring optimal conditions for biological treatment. -
Demulsification and Bacteriostatic Action for Complex Wastewater
For emulsified oils in oily wastewater, calcium ions destabilize oil droplet surface charges, enabling rapid oil-water separation. In one automotive repair plant case, emulsified wastewater achieved stratification within 30 minutes post-treatment. Additionally, calcium chloride suppresses acid/alkali-resistant bacteria, enhancing subsequent disinfection. -
Sludge Bulking Control, Boosting Treatment Efficiency
In activated sludge systems, Lanyao’s precision dosing of calcium chloride inhibits filamentous bacteria growth, reducing sludge volume index (SVI) from 309.5 mL/g to 67.1 mL/g. This prevents system failures caused by sludge bulking while maintaining COD removal efficiency.
Technology-Driven Commitment to Sustainability
Lanyao’s calcium chloride solutions address traditional challenges while prioritizing environmental compatibility. By optimizing dosage and minimizing secondary risks (e.g., soil hardening from residual calcium ions), the company balances efficacy with ecological protection. To date, its technologies have been deployed across electroplating, papermaking, chemical, and municipal sectors, treating over 1 billion tons of wastewater and reducing fluoride/phosphorus emissions by 500,000 tons.
Future Vision: Innovation for a Greener Tomorrow
Amid global water scarcity and tightening environmental standards, Lanyao continues advancing calcium chloride R&D. Plans include an AI-powered dosing system integrated with IoT for real-time water quality monitoring and dynamic adjustments, further cutting operational costs and energy use. Concurrently, the company collaborates with universities to explore calcium ion recycling in high-salinity wastewater, driving circular economy initiatives.
About Jiangsu Lanyao Water Treatment Co., Ltd.
Established in 1996 and headquartered in Wuxi, Jiangsu, Lanyao specializes in water treatment chemicals and process innovation, serving industrial wastewater, municipal sewage, and water reuse sectors. Guided by its mission “Technology Safeguarding Blue Waters,” the company delivers efficient and economical environmental solutions worldwide.
