Dairy industry consumes huge amount of water during production of milk and its products. The wastewater discharged contains organic matter, oils and grease, proteins, high chemical oxygen demand (COD) etc. The untreated wastewater causes land and water pollution, therefore necessary treatments should be done before releasing into the environment. As per the standard norms of pollution control board for milk diary effluents the desirable limit of COD should not exceed 250 mg/l. The present study

more »

... aims at the comparison of the adsorbents used. The study was conducted using adsorption method. In order to reduce the COD content in the diary effluent the peels of orange, lemon and banana are used. They act as good adsorbents. The effect of pH and adsorbent dosage was evaluated for each peel separately. The percentage removal of organic matter from dairy effluent was evaluated.