ISSN (PRINT): 2393-8374, (ONLINE): 2394-0697, VOLUME-6, ISSUE-6, 2019 DOI: 10.21276/ijcesr.2019.6.6.1 1 EXPERIMENTAL STUDY ON THE TREATMENT OF DAIRY WASTE WATER USING LOW COST NATURAL ADSORBENTS Divya K S 1 , Dr.Syed Ariff 2 V Vaishnavi 3 , Sadiya Banu A S 4 , G Swetha 5 , Ravi Kiran S 6 1 Assistant Professor, 2 Professor & Principal, 3,4,5,6 Students Department of Civil Engineering, Dr.T.Thimmaiah Institute of Technology, KGF Emailid:divya@drttit.edu.in 1 ABSTRACT Dairy industry is the one of the pollution food industry and considering huge amount of water is used during production of milk and its products. The waste water contains dissolved sugars, proteins, and fat which is biodegradable and organic in nature. So that dairy waste water is considered as high concentration of organic matter and high BOD. It is estimated that dairy industries generate 2.5 to 3 litres of waste water per litre of milk processed. Such untreated waste water pollutes land and water bodies so that proper treatment of dairy waste water is necessary before disposal in the environment. The aim of present research work is to determine behaviour of various parameters of dairy waste water. An investigation of possible use of low cost natural adsorbents in their powdered form like rice husk, curry leaf, orange peel, neem leaf and rice husk in the treatment of dairy waste water. After conducting the experiments we found that the COD, BOD, Turbidity and pH of the dairy waste water is reduced. KEYWORDS: Dairy waste water, Natural adsorbents, COD, BOD, Turbidity and pH INTRODUCTION The dairy industry involves processing of raw milk, into products like consumer milk, butter, cheese, yogurt etc. Dairy industry contains high amount of organic constituents. So, it is needed to provide required treatment before discharge into the environment. The treatment mostly classified as aerobic and anaerobic treatment. Due to rapid industrial growth world’s economy improve with rid growth but also that make impact in terms of pollution on environment. Large concentration of pollutants in terms of quantity and quality of liquids, solids, and gaseous pollutants shows harmful effects on flora and fauna as well as on many areas on environment. Organic toxic waste (oil and grease (O&G)) causes ecology damages for aquatic organisms, plant, animal, and equally, mutagenic and carcinogenic for human being. They discharge from different sources to form a layer on water surface that decreases dissolved oxygen. O&G layer reduces biological activity of treatment process where oil film formation around microbes in suspended matter and water. This lead to decrease dissolved oxygen levels in the water. There are various methods of oil and grease removal that one of the examples is by using adsorption method. This method commonly uses activated carbon that is one Of the effective adsorbents. Although effective, the cost for activated carbon is expensive thus a study was conducted by using natural resources as alternative adsorbents for oil and grease removal. This study objective is to determine the ability of three adsorbents, which are curry leaf and neem as an adsorbent in removing oil and grease from wastewater. It involved the characterization of adsorbent and the performance studies of the adsorbent. Many technologies are in practice to treat the dairy wastewater and in the present study; an attempt was made to investigate the application of low cost adsorbents from orange peel for the treatment by considering the wastewater from local dairy form. Tones of orange peels were discarded and send to garbage as useless materials and it is very significant and even essential to find applications and uses for these peels, as the management of wastes nowadays