Fenton試劑處理小型暗房之黑白軟片顯影廢液之研究

The Study of Using Fenton Reagent to Deal with the Development Wastewater Making by Small Dark Room

羅亦晽(Lo Yi-Lin)

指導教授 ： 吳祖銘

國立臺灣師範大學/科技與工程學院/圖文傳播學系/碩士(2018年)

https://doi.org/10.6345/THE.NTNU.DGAC.008.2018.F05

摘要

小型暗房產生的顯影廢液雖然量少，不及於工業處理的體積，然而任意排放，對環境勢必會產生污染。Fenton試劑於眾多處理有機廢液之研究上有突出的表現，研究發現Fenton試劑於酸性環境下，且H2O2的濃度大於Fe2+的濃度時，能有效分解有機物質，同時也能有效降低廢液中之COD。故本研究將使用Fenton氧化法處理小型暗房之顯影廢液，於pH=3，室溫下進行反應。實驗先找出亞鐵離子與過氧化氫最佳莫耳比，之後再尋找過氧化氫最佳的參數投加量。
研究使用Fe2+/H2O2莫耳濃度比為1/2處理使用1：10稀釋過之顯影廢液，H2O2添加量為15 ml，並提高反應環境溫度至60°C，一天後液體從紫棕色變成土黃色，並且鐵污泥沈澱。使用共立簡易水質離子測試包-WAK Packtest測試，對比COD標準色卡呈現出COD約在60 mg/L，使用微型光譜儀量測則表示COD的位置落於120 mg/L，而檢驗之數值則為134 mg/L。
政府規範放水流標準為COD須低於80 mg/L，本實驗結果於顯影廢液之COD降解率為97.2％，仍無法達到政府規範的放水流標準，尚有因素待後續研究探討。綜合所有效益與經濟成本，Fenton試劑於小型暗房處理廢棄顯影液可行性高，且可以使用顯影液完後立即處理，對小型暗房與環境為一件降低負擔的方法。

關鍵字

黑白軟片顯影廢液 ； COD ； Fenton試劑

並列摘要

Fenton reagent has well performance in many researches dealing with organic waste liquids. It has been found that when Fenton reagent is in an acidic environment and the concentration of H2O2 is greater than the concentration of Fe2+, it can effectively decompose organic substances, and it can also effectively reduce the amount of waste liquid ’s COD. Therefore, this study will use the Fenton oxidation process to treat the developing waste liquid which a darkroom produced and react at room temperature at pH=3. The experiment first finds the best molar ratio of ferrous ions and hydrogen peroxide, and then looks for the optimal dosage of hydrogen peroxide.
The study used a Fe2+/H2O2 molar ratio of 1/2 to treat 1:10 diluted developing wastewater. The amount of H2O2 added was 15 ml, and the temperature of the reaction's environment was raised to 60°C. After one day, the color of liquid changed from purple brown to soil yellow, and iron sludge settles down. The use of the Kyoritsu Simple Water Quality Ion Test Kit-WAK Packtest test showed that the COD was about 60 mg/L compared to the COD standard color card, and the COD position was 60 to 120 mg/L using the micro spectrometer measurement, and the test value was 134 mg /L.
The COD government’s standard must be lower than 80 mg/L. The experimental results show that the COD degradation rate of the development waste liquid is 97.2%, and it still cannot meet the COD of government’s standard. There are still other factors to be investigated in subsequent studies. In combination with all benefits and economic costs, Fenton Reagent has a high feasibility of handling waste developer in a small darkroom and can be processed immediately after the developer is used. This is a method to reduce the burden on the small darkroom and the environment.

並列關鍵字

Developer wastewater of B&W ； COD ； Fenton reagent

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