| Summary: | 碩士 === 國立暨南國際大學 === 土木工程學系 === 94 === Enhanced biological phosphorus removal (EBPR) is playing an increasingly important role in controlling the eutrophication phenomenon in natural waters, when heavy metals get into natural waters, the EBPR processes will be affected. Several researchers have witnessed the breakdown of the EBPR processes when glucose was added as an organic substrate in the influent, it is usually believed that acetic acid is the only kind of favorable substrates to be used to maintain the EBPR performance. Therefore, this research mainly investigated the impacts of the heavy metals on the glucose and acetic acid pathways and mechanisms of phosphorus removal. The results were hoped to be the references of the management for industrial wastewater. This research results showed that the potential of EBPR with acetic acid will be increased with the increase of initial COD, and increased with the decrease of residue COD in the bulk solution. The potential of EBPR with glucose will be increased with the increase of initial COD. It revealed that the efficiency of EBPR with glucose could be better as usual. When acetic acid was added as an organic substrate, it is easy to synthesize and degrade PHB through ED pathway. When glucose was added as an organic substrate, it is easy to synthesize and degrade PHV through EMP pathway.If the acetic acid influent contained heavy metal, PHB of synthesis and degradation is simple to inhibit. If the glucose influent contained heavy metal, PHV of synthesis and degradation is hard to inhibit. If heavy metal lead and cadmium suddenly accede to the process, the efficiency of EBPR with acetic acid as substrates will be effect easily, but with glucose as substrates will be effect with difficulty. This indicated that glucose could be used as the dominant substrate to induce and maintain a successful EBPR process when avalanche of heavy metal lead and cadmium.
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