Dairy industry is a major source of waste water generation with the major pollutants as organic components like dissolved sugars, carbohydrates, proteins and fat, Suspended Solid, Total Dissolved Solid, Sulfur, Phosphorous and Nitrogen. So the dairy wastewater is considered as high concentration of organic matter, high COD and high BOD. An experimental study was carried out for the treatment of dairy waste water using low cost adsorbents coconut shell activated carbon. The adsorbent was used for treatment of dairy waste water with different dosages and contact time. The results of COD and BOD removal is up to 76 % and 82 % for coconut shell activated carbon at dosage of 150 mg and at contact time 120min. The results were validated using Langmuir and Freundlich equations.