科研之友
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摘要
The high-strength wastes generated from the oleo chemical industry, namely oleo chemical effluent (OCE) and glycerin pitch (GP), have raised a serious disposal problem. An aerobic digestion after chemical pre-treatment and costly incineration/landfill disposal is the only currently available treatment method for OCE and GP, respectively. Due to the high alkalinity and organic content of GP, there is a potential to anaerobically co-digest OCE with GP, which can be used to neutralise OCE's acidity while providing the required organic strength for biogas production. The objective of this study is to evaluate the feasibility of anaerobic co-digestion (ACD) of OCE and GP based on their maximum available energy potential. This study was evaluated based on 85% chemical oxygen demand removal efficiency. The study disclosed that GP is able to generate maximum potential methane production of 6716m(3)/d and energy of 0.097MW/h, which are two times higher than that in OCE. The cost benefit analysis also revealed that with the establishment of ACD, a cost saving of USD 1693716/year from disposal and an earning profit of USD 54544/year from energy generation can be achieved. Therefore, it could be concluded that ACD of OCE and GP is feasible to produce a reduced strength of final effluent with enhanced methane production.
- 出版日期2015-8
