Non Ferric Alum (Aluminium Sulphate) is a widely used coagulant in water treatment processes across the globe. With its high purity and low iron content, this chemical compound plays a crucial role in ensuring safe, clean, and clear water for both industrial and municipal purposes.
In this blog, we explore how Non Ferric Alum contributes to water purification and why it’s preferred in many treatment systems.
🔹 What is Non Ferric Alum?
Non Ferric Alum is a white, crystalline chemical compound composed primarily of aluminium sulfate. Unlike Ferric Alum, it contains very low levels of iron (typically <0.02%), making it ideal for applications where high clarity and purity are essential.
🔹 How Non Ferric Alum Works in Water Purification
The primary function of Non Ferric Alum in water purification is coagulation. When added to raw or turbid water, it reacts with natural alkalinity and forms flocs—clumps of suspended particles and impurities. These flocs are then removed through sedimentation or filtration.
🔹 Key Benefits in Water Treatment:
- Effective Turbidity Removal
Non Ferric Alum is highly efficient in removing suspended solids, mud, silt, and other particulates, resulting in visibly clearer water. - Color & Odor Reduction
It helps in reducing color, foul odor, and organic matter, especially in river and lake water sources. - Low Iron Contamination
Its low iron content ensures that no staining occurs on tanks, pipelines, or fabrics during purification, which is especially beneficial in textile and paper industries. - pH Adjustment
It aids in lowering the pH of water slightly, helping in microbial control and better performance of downstream treatment systems. - Environment-Friendly
Non Ferric Alum is non-toxic and biodegradable, making it a safer option compared to synthetic chemical coagulants.
🔹 Common Applications:
- Municipal Drinking Water Plants
- Industrial Effluent Treatment Plants (ETPs)
- Sewage Treatment Plants (STPs)
- Cooling Tower Water Systems
- RO Pre-treatment Systems
🔹 Dosage and Handling
The dosage of Non Ferric Alum varies depending on water quality, turbidity, and pH. It is typically used in combination with lime or other coagulants to optimize treatment efficiency. Always consult a water treatment expert for accurate dosage instructions.
Safety Tip: While handling alum, always use gloves and protective gear to avoid skin and eye irritation.