| 英文摘要 |
According to the pollution prevention and monitoring mechanisms drafted in 2009, the Environmental Protection Agency (EPA) promotes the demonstration plan that includes detailed chemicals disclosure in the manufacturing process (upstream) and wastewater monitoring (downstream) in the optoelectronic industry and Science Park in 2010. The study has summarized the results of the demonstration plan in 2011. For the chemicals disclosure, the manufacturers are asked to regularly declare the raw materials used by the industries. For the wastewater monitoring, the manufacturers are asked to check for the indium, gallium, molybdenum, total toxic organic (TTO), and acute toxicity in the effluent. Further, the plan has investigated the effluent quality and draw up the regulated items and standards of wafer and semiconductor manufacture industry.
There are many industries that discharge ammonia-nitrogen in their wastewater. The investigation estimated that total ammonia-nitrogen discharged from industries was 76,167 kg/day. The largest contributor was sewage system in animal husbandry, and its load was estimated to be 21.4% of the total ammonia-nitrogen. Further, both Science Park, public sewers, petrochemical industrial parks and petrochemical industry also have high pollution potential. Some industry associations and organizations have started the investigation and analysis of nitrogen-containing wastewater. The plan has suggested to evaluate the regulation of ammonia for Science Park in priority according to the total ammonia-nitrogen and the percentage of investigated factories.
The plan has revised and set the Effluent Standard, Effluent Standards of Semiconductor Manufacture Industry, Effluent Standards of Petrochemical Industry, Effluent Standards of Petrochemical Industrial Parks Sewage System. Besides, we gathered information on the regulations of the effluent acute toxicity in Korea. Further, the plan has investigated the wastewater characteristics of chemical industry and evaluated the regulation. The plan has presented the suggestion of regulation of organic compounds and ammonia-nitrogen. Furthermore, the plan also investigates the appropriateness of regulations and standards for specific industry or items (such as the COD standard of electroplating manufacture industry).
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