Effect of aeration in flocculation treatment of palm oil mill effluent (POME)
2010
Suraini Suhaimi | Mohamad Sulong | Noorshamsiana Abdul Wahab | Astimar Abdul Aziz | Nor Faizah Jalani
Coagulation~flocculation treatment is widely used in wastewater treatment especially for industrial waste. It was also used as a pre-treatment prior to then ultrafiltration process for water reuse purposes. For palm oil mill effluent (POME), is it usually undergone the biological treatment or specifically ponding system to reduce the load of organic content. This study was carried out to investigate the effect of aeration prior to flocculation treatment inreducing of chemical oxygen demand (COD) and turbidity of anaerobically treated POME. The samples are initially aerated for 4-8 hours, then it undergone for coagulation-flocculation process. Polymer flocculant is added to the sample and agitated at 150 rpm for a few minutes and then slowed down to 30 rpm for 10 minutes. Chemicals also may add as a coagulant aid to destabilize the colloidal particles. Then, the agitation is then stopped and theflocs were let to be settled for 30 minutes. From the results, it can be seen that the treatment is able to reduce COD and turbidity down to 1000 mg/l and 100 NTU respectively. The resulting effluent can be followed by filtration for polishing purposes to get clearer water with lower COD, BOD and turbidity.
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