How Chitosan Treats Water
Chitosan is one of the most effective natural biopolymers used in water and wastewater treatment. Its positive charge enables it to attract and remove negatively charged contaminants from water.
Coagulation
Chitosan neutralizes suspended particles, colloids, and impurities, causing them to aggregate into larger particles.
Removes: Turbidity, fine suspended solids, organic matter.
Flocculation
After coagulation, chitosan acts as a flocculant by binding small particles into larger flocs that settle quickly.
Benefits: Faster sedimentation, reduced sludge volume, lower chemical consumption.
Heavy Metal Removal
Chitosan contains amino and hydroxyl groups that bind heavy metal ions.
Removes: Lead (Pb), Copper (Cu), Chromium (Cr), Nickel (Ni), Cadmium (Cd).
Color Removal
Highly effective in removing dyes and colored compounds from industrial wastewater.
Industries: Textile, dyeing, paper, printing.
Oil & Grease Separation
Chitosan helps destabilize oil emulsions, allowing efficient separation of oils and grease.
Applications: Food processing, petrochemical industries, automotive wastewater.
Reduction of COD & BOD
Chitosan removes organic pollutants that contribute to Chemical Oxygen Demand (COD) and Biological Oxygen Demand (BOD), improving overall treatment efficiency.
Pathogen Reduction
Its natural antimicrobial properties help reduce bacteria, fungi, and some waterborne microorganisms.
Sludge Dewatering
Chitosan improves sludge dewatering performance, reducing disposal costs and increasing solid-liquid separation efficiency.
Drinking Water Treatment
Used as a natural alternative to synthetic coagulants.
Advantages: Non-toxic, biodegradable, environmentally friendly.
Industrial ETP & STP Applications
ETP: Textile, food processing, chemical industry, pharmaceutical wastewater.
STP: Municipal sewage treatment, sludge conditioning, tertiary treatment.
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