Abstract:
This research was aimed at the study is to investigate into techniques for removal of suspended solid from a rubber-gloves plant waste effluents containing high content of latex particulates. Processes considered here coagulation with coagulant aid which seem to offer way to reduce turbidity and suspended solid down to a certain level before disposal or further treatment. Three serics of test have been performed : compared efficiencies of coagulant aid between chitosan and polymeracrylamide, amount of poly aluminium chloride (PAC) and chitosan for coagulation waste effluent and using chitosan as a coagulant aid filled in activated sludge plant.The results of the study show that optimum pH for coagulant with chitosan is range 8.5-9.0 Compared efficiencies of coagulant aid between chitosan and polymeracrylamide appears when using chitosan as a coagulant aid will to improve the effluent best quality can reduce level of turbidity from 50.06+-0.03 NTU down to range 22.30+-0.02 to 41.68+-0.01 NTU and suspended solid from 141+-1.53 mg/L down to 63+-1.00 to 118+-0.58 mg/L . Cationic and anionic polymeracrylamide can reduce next in order successively. The optimum dosage of PAC and chitosan for coagulation when using PAC as acoaglant and chitosan as a coagulant aid is aroung 12 mg/L PAC and of around 3 mg/L chitosan can reduce particulates so good when calculate in term of % removal efficiencies can reduce level of turbidity 64.89+-0.01%, suspended solid 64.77+-0.23% and COD 28.48+-1.29%. Using chitosan as a coagulant aid in activated sludge plant can reduce particulates better than using anionic polymeracrylamide can reduce suspended solid is 96.97+-1.14%, dissolve solid 25.90+-6.54%, COD 83.28+-6.09% and BOD 87.16+-5.36%