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Explore our premium calcium-based products engineered for water purification, industrial processing, and environmental compliance.
Calcium Hydroxide for Water Treatment โ Nano-Grade Mineral from China Suppliers
OEM Calcium Hydroxide Powder for Water Purification โ Factory Supply, Competitive Price
High-Purity Calcium Hydroxide for Industrial Water Treatment โ China Factory Solutions
Ground Calcium Hydroxide Powder for Water Softening & pH Adjustment โ Quality Suppliers
Calcium hydroxide โ chemically expressed as Ca(OH)โ โ is an inorganic compound produced by combining calcium oxide (quicklime) with water in a controlled hydration process. Commonly known as slaked lime or hydrated lime, it appears as a fine white powder with a highly alkaline pH ranging from 12.4 to 12.8.
In water treatment and purification, this alkalinity is precisely what makes calcium hydroxide so valuable. It rapidly neutralizes acidic wastewater, precipitates heavy metals, softens hard water, and disinfects municipal water supplies โ all at a remarkably low cost compared to alternative chemical reagents.
Its versatility spans municipal drinking water systems, industrial effluent plants, mining operations, food processing, and cutting-edge environmental remediation projects. With global water scarcity intensifying, the role of calcium hydroxide in clean water infrastructure has never been more critical.
Molecular Weight: 74.09 g/mol ย |ย pH in Solution: ~12.4 ย |ย Solubility: 1.73 g/L at 20ยฐC ย |ย CAS No.: 1305-62-0
Precisely adjusts water pH to optimal ranges for safe discharge and consumption.
Precipitates lead, arsenic, chromium, and mercury from contaminated water streams.
Removes calcium and magnesium bicarbonates via the lime-soda softening process.
High alkalinity destroys pathogens and bacteria in municipal water supplies.
A streamlined, cost-effective chemical process that delivers measurable results across all water treatment scales.
Ca(OH)โ powder is mixed with water to form a lime slurry at controlled concentrations.
Slurry is precisely dosed into raw water or wastewater using automated feed systems.
Alkaline ions react with contaminants, forming insoluble precipitates that settle out.
Clarifiers or sedimentation tanks separate treated water from sludge and solids.
Treated water meets regulatory standards for safe discharge or reuse in operations.
Useen's calcium hydroxide is produced under rigorous quality control, delivering superior reactivity, purity, and consistency for demanding water treatment applications.
Our calcium hydroxide achieves purity levels of 95โ99.5%, minimizing impurities that could interfere with treatment chemistry or introduce secondary contamination into water systems.
Fine particle size distribution (D50: 3โ10 ฮผm) ensures rapid dissolution and maximum surface area contact, accelerating neutralization and precipitation reactions significantly.
Available in 25 kg bags, 500 kg jumbo sacks, and 1,000 kg bulk packaging to suit municipal water plants, industrial facilities, and OEM distribution partners globally.
With 200,000 tons annual production capacity and three dedicated calcium hydroxide lines, we guarantee uninterrupted supply to large-scale water infrastructure projects worldwide.
Products meet ISO, AWWA, and food-grade standards where applicable, ensuring compliance with international drinking water regulations and environmental discharge requirements.
Calcium hydroxide delivers one of the lowest cost-per-unit-alkalinity ratios among all water treatment chemicals, making it the preferred choice for budget-conscious infrastructure projects.
From municipal drinking water to cutting-edge industrial effluent management, calcium hydroxide powder is indispensable across the entire water treatment spectrum.
pH correction, corrosion control in distribution pipes, and fluoride removal in community water systems.
Neutralization of acidic effluents from chemical plants, electroplating facilities, and textile mills.
Treatment of acid mine drainage (AMD) containing sulfates, heavy metals, and low-pH runoff.
Balancing pH of irrigation water to optimize nutrient uptake and protect soil microbiome health.
Scale prevention and pH management in cooling tower water and boiler feed water systems.
Maintaining optimal alkalinity and pH in fish ponds, shrimp farms, and recirculating aquaculture.
Process water conditioning and neutralization in pharmaceutical, polymer, and specialty chemical production.
Lime stabilization of biosolids and sewage sludge to reduce pathogens and enable safe land application.
The global calcium hydroxide market for water treatment is undergoing significant transformation driven by regulatory pressure, urbanization, and environmental sustainability goals.
The global hydrated lime market is projected to exceed USD 9.2 billion by 2030, with water treatment representing the fastest-growing application segment, driven by expanding urban infrastructure in Asia, Africa, and Latin America.
Governments worldwide are enforcing stricter wastewater discharge standards. The EU Industrial Emissions Directive, US EPA Clean Water Act amendments, and China's "Beautiful China" initiative are compelling industries to upgrade treatment systems using proven lime-based chemistry.
Next-generation lime softening systems integrate real-time pH sensors, automated dosing, and AI-driven optimization algorithms to minimize chemical consumption while maximizing contaminant removal efficiency โ a space where ultra-fine Ca(OH)โ powder excels.
Research increasingly demonstrates that calcium hydroxide-based alkaline treatment, when combined with coagulation and advanced oxidation, can significantly reduce PFAS (forever chemicals), microplastics, and pharmaceutical residues from water sources.
As desalination capacity expands globally to address freshwater scarcity, calcium hydroxide plays a critical role in pre-treatment โ adjusting feed water alkalinity and preventing membrane scaling in reverse osmosis systems.
๐ก Key Insight: Water treatment remains the most resilient end-market for calcium hydroxide, with demand largely immune to economic cycles due to its essential infrastructure nature.
Shandong Useen Calcium Co., Ltd. specializes in a range of products, including nano-scale calcium carbonate, food-grade calcium carbonate, calcium oxide, calcium hydroxide, and light calcium carbonate. Our company owns 17 fully automated calcium oxide production lines, three calcium hydroxide production lines, and nine calcium carbonate production lines.
Its annual output is 200,000 tons for nano-calcium carbonate, 200,000 tons for calcium hydroxide, 160,000 tons for light calcium carbonate, 360,000 tons for heavy calcium carbonate, and 1 million tons for calcium oxide.
Our materials are used across a wide range of industries including PVC pipes, automotive primers, paper, printing inks, wires and cables, sealants, rubber products, tyres, and more. Our clients rely on us for consistency, tailored solutions, and support in scaling their operations without compromising on quality.
Our company is the first in China to apply nano calcium carbonate to PE blow molding products, which can replace traditional filling materials and has excellent performance.
Nano CaCOโ: 200K t/y ย |ย Ca(OH)โ: 200K t/y ย |ย Light CaCOโ: 160K t/y ย |ย Heavy CaCOโ: 360K t/y ย |ย CaO: 1M t/y
Innovation is at the core of everything we do. In recent years, we have made significant investments in R&D, focusing on the development of new technologies and next-generation calcium products.
Our company has established close "industry-university-research" cooperation relationships with well-known foreign industry experts, the Institute of Process Engineering of the Chinese Academy of Sciences, Tsinghua University, China University of Geosciences, Beijing University of Science and Technology, Shandong University, and more.
Through our industry-university-research partnerships, we have established strong capabilities in applied research, product development, and advanced process engineering. These collaborations allow us to continuously evolve, improve our formulations, and meet the changing demands of global industries.
Chinese Academy of Sciences โ Process Engineering Institute
Tsinghua University R&D Partnership
China University of Geosciences
International Industry Expert Network
Comprehensive calcium-based solutions for water purification, environmental compliance, and industrial processing โ all from one trusted manufacturer.
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Partner with Shandong Useen Calcium Co., Ltd. for consistent, high-purity calcium hydroxide powder that meets the demands of modern water purification infrastructure โ backed by cutting-edge R&D and 200,000 tons annual production capacity.
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