A study of dissolved organic matter removal in the industrial wastewater treatment plant
工業區污水處理廠 ； 溶解性有機物 ； 化學處理 ； 生物處理 ； 前處理 ； Pretreatment processing ； The wastewater treatment plants of industrial pa ； Dissolved organic matter ； Chemical treatment. ； Biological treatment
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近年來環保意識抬頭，工業區污水處理廠之營運成效，對於整個工業區的永續生存，扮演著最重要的角色。然而，工業區污水處理廠對溶解性有機物處理之資料極為有限，且未針對水質之溶解性或非溶解性有機物特性做進一步分析。本研究乃以全興工業區污水處理廠為案例，探討污水處理廠去除效能、各處理單元對溶解性有機物之處理特性及生物處理單元之反應動力特性，期能作為現場穩定操作及整體成效提昇之參考。 針對全興工業區污水處理廠整廠評估，分析結果顯示：總化學需氧量去除率，以生物處理單元最高（61.3%），其次為前處理單元（31.3%），最後為化學處理單元（23.1%）；溶解性化學需氧量之去除率，亦以生物處理單元為最高（58.9%），其次為化學處理單元（27.7%），最後為前處理單元（27.2%）；懸浮固體去除率以化學處理單元最高（61.3%），其次為前處理單元（49.3%），最後為生物處理單元（44.0%）。由此可知，生物處理單元在污水處理廠扮演非常重要角色。 分析各單元有機物去除量與懸浮固體去除量之比值以線性迴歸方式表示，前處理單元中1克SS去除，同時約去除1.87克T-COD或1.26克D–COD；生物處理單元中1克SS去除，同時亦有5.42克T-COD或4.34克D–COD被去除；化學處理單元中1克SS去除，同時約去除1.07克T-COD或1.08克D–COD。為掌握生物處理變動特性，將生物處理單元以每日數值、3日、5日、7日移動平均方式加以分析，結果顯示二級處理水之T-COD及D–COD與食微比（F/M）具線性關係，以7日移動平均最為穩定，且D–COD與F/M展現更佳之線性理論關係，此研究成果可提供現場操作之參考。
Recent year, environmental issue has been attened. The wastewater treatment of industrial park was the most important role for sustainable development. However, the performance information of dissolved organics processing were few in the industrial wastewater treatment plants. The data of dissolved organics removal was limited. Therefore, this research aimed to investigate the performance of wastewater treatment plant, the characteristics of dissolved organic removal and the kinetic characteristics of biological unit, based on wastewater treatment plant of Chuansing industrial park. The results can be used to improve the overall efficiency. Evaluating the wastewater treatment plant of Chuansing industrial park, the results show that : (1) T-COD removal efficiency. The biological treatment unit was the highest (61.3%). The pretreatment processing unit was intermediate (31.3%), the chemical processing unit was the lowest (23.1%). (2) D-COD removal efficiency. The biological treatment unit was the highest (58.9%).The chemical processing unit was intermediate (27.7%), the pretreatment unit was the lowest (27.2%). (3) The suspended solids removal efficiency. The chemical processing unit was the highest (61.3%). The pretreatment unit was intermediate (49.3%), the biological treatment unit was the lowest (44.0%).Thus the biological treatment unit was the most important unit in the wastewater treatment plants. Using the linear regression methods, the analyzed ratio of organics removal amount per SS removal amount as follow: (1) When pretreatment processing unit remove 1 g SS, 1.87 g T-COD or 1.26 g D-COD was removed simultaneously.(2) When biological treatment unit remove 1 g SS, 5.42 g T-COD or 4.34 g D-COD was removed simultaneously. (3) When chemical processing unit remove 1 g SS, 1.07 g T-COD or 1.08 g D-COD was removed simultaneously. The characteristics of biological treatment was analysis using the moving average approach for 1-day,3-days,5-days,7-days. The results showed that the T-COD, D-COD with F/M (food to microorganism ratio) have good linear relationship. The 7-days moving average approach was the most stable method. Moreover, the D-COD and F/M showing the best linear relationship. This study could be reference for improving the operation of wastewater treatment plant.
工程學 > 土木與建築工程