Pickling is one the oldest means of food preservation. Wastes from preservation operations are characterized by high chloride, high oxygen demand and high total suspended solids. Waste treatment technology for removing suspended solids, reducing oxygen demand is available, but no economical methos is available. Water usage and waste characteristics were determined on major unit operations, including tank yard brining, desalting and processing, slicing and cutting operations. The results of the study provide a detailed characterization of the types and concentration of components of waste streams from unit operations in cucumber preservation industry. The adsorption and treatment of organic contaminants using activated carbon is carried out. Adsorption of organics from the effluent on  activated carbon was examined at room temperature. The experimental batch equilibrium data was correlated by Freundlich isotherm. The adsorption data fitted well into the Freundlich isotherm. The organic concentration expressed as Chemical Oxygen Demand (COD) and Total Suspended Solids (TSS) was reduced.