Reducing the Turbidity of Wastewater by Some Plant Based Coagulants

The aim of current study is estimate the ability of plant wastes in treatment of waste water that contains high levels of turbidity by Batch system method, with determine the best plant waste for treatment according to the changing of a number of parameters. This study involved four different samples of plant wastes for using as natural coagulants that prepared in laboratory, each sample Include one part of each plant which was Cactus leaves, Okra fruit peels, Okra seeds and Fenugreek seeds. A different mounts of each plant coagulants (5gm, 10gm and 15gm) were used for coagulation study. Additionally, the current work has examined other chemical and physical parameters such as pH values, total salinity (TS), total dissolved solids (TDS) and electrical conductivity (EC). On the other hand, experimental conditions were used for carry out of coagulation process were pH 6 and contact time 120 minutes with continuous shaking. Also, alum was used in this study under same conditions as common traditional coagulant for comparison. The obtained results showed the best efficiency of coagulation process was 78 % for cactus leaves with the weight 5 gm for all chemical and physical parameters. While, the lowest efficiency of coagulation process was 34 % with the weight 15gm of cactus leaves. In same time, the best efficiency of coagulation process was 76 % for alum. While, the lowest efficiency of coagulation process was 33.4 % for alum. On the other hand, other natural coagulants such as Okra fruits, Okra seeds and Fenugreek seeds didnt show any efficiency as natural coagulants for coagulation process and all parameter values of waste water were increased after treated with it.