Treatment of effluents from palm oil mill process to achieve river water quality for reuse as recycled water in a zero emission system

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• 作者：Mohd Ridzuan Othman ; Mohd Ali Hassan ; Yoshihito Shirai ; Azhari Samsu Baharuddin ; Ahmad Amiruddin Mohd Ali ; Juferi Idris
• 关键词：Activated carbon ; Palm oil mill effluent ; Polyaluminium chloride ; Zero discharge ; Zero emission
• 刊名：Journal of Cleaner Production
• 出版年：15 March, 2014
• 年：2014
• 卷：67
• 期：Complete
• 页码：58-61
• 全文大小：566 K

文摘

A major problem facing the palm oil industry is the need to use fresh river water for processing which leads to the discharge of treated palm oil mill effluent (POME) to the river daily. In this paper, we propose a practical solution using activated carbon and selected coagulants for the zero emission of POME final discharge, using river water quality as the benchmark. The target was on the reduction of chemical oxygen demand (COD) and suspended solids (SS) to meet river water quality for recycling and reuse of the POME final discharge as boiler feed water to fulfil the zero emission concept. Our results showed that a new two-step process, based on adsorption of organic pollutants on activated carbon (AC), with a ratio of 10聽g AC per 1聽L of wastewater (POME), followed by coagulation using a ratio of 0.6聽g of polyaluminium chloride per 1聽L of treated POME, was the best treatment. By using this new proposed treatment the final COD and SS of resulted residual water from palm oil mill process were 10聽mg聽L^鈭? and 2聽mg聽L^鈭?, respectively, which is better than river water quality. Therefore the objective of zero emission of POME final discharge can be achieved.