| 英文摘要 |
Taiwan is one of the major clusters of high-technology manufacture in the world. There are various chemicals used in the industries and may cause significant pollution when discharging wastewater. The main purposes of this study were to continue the conclusion of photovoltaic and semiconductor industries last year and to investigate the pollution characteristics of discharged wastewater for the other new industries. Besides, the study was also to investigate the manufacture and discharged wastewater of the factories used persistant organic pollutants and to understand the pollutant potential. Eventually, the study assisted the EPA to promote the program of self pollutant reduction and control and to implement the reduction of pollutant. The investigation of wastewater discharged from focusing industries revealed that light-emitting diode and pharmaceutical manufacturing and biotechnology industry had higher pollution potential. The raw wastewater had higher concentration of chemicals used in the industries. We recommended that effluent standard should regulate ammonia-nitrogen in priority, while considering the factors like consuming amount of chemicals in the focusing industries, the toxicity, the possibility that the chemicals enter the wastewater, the wastewater treatment efficiency, the environment impact and the foreign effluent standards. The investigation of phthalate esters, nonyl phenol and organic tin in the wastewater revealed that the raw wastewater had higher concentration pollutant potential. However, the concentration of phthalate esters and nonyl phenol discharged from factory was mostly lower than raw wastewater by means of the dilution of the other wastewater in the factory and the treatment with wastewater treatment process. And, the concentration of organic tin discharged from the factory that used or manufactured organic tin in the process has higher pollution potential. Moreover, it was difficult and complicate to promote the program for self-reduction and self-control of ammonia-nitrogen and dioxin in wastewater. So, the study was suspended in this year. It was suggested that EPA could build up the background database for the new industry wastewater quality and conclude the achievements of every study year by year. Therefore, EPA could comprehend the characteristic of the domestic new industry wastewater fully and draft the control stategy of pollutants in the wastewater.
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