本文選題：高級氧化法 + 過硫酸鈉��； 參考：《合肥工業(yè)大學(xué)》2015年碩士論文

【摘要】：基于硫酸根自由基的高級氧化法是目前環(huán)境領(lǐng)域頗具應(yīng)用前景的污水處理技術(shù)方法。本論文首先以酸性品紅和堿性品紅模擬廢水為研究對象,分別采用熱活化過硫酸鈉和Fe2+活化過硫酸鈉生成硫酸根自由基的活化方法,探討不同影響因素對模擬廢水氧化降解效果的影響；在此基礎(chǔ)上,再以實際印染廢水和焦化廢水為對象,利用上述兩種活化方法開展廢水的深度處理實驗研究,并對傳統(tǒng)正交試驗和響應(yīng)面優(yōu)化方法獲得的最優(yōu)方案進(jìn)行分析、比較。本論文的主要研究結(jié)果如下：(1)對酸性品紅模擬廢水的實驗研究結(jié)果發(fā)現(xiàn),當(dāng)T70℃時,酸性品紅基本完全脫色且降解；常溫下Fe2+/Na2S208活化體系中,在Fe2+/Na2S208摩爾比一定的條件下,也有一定程度脫色,但處理效果沒有熱活化顯著。酸性品紅在60～80℃的范圍內(nèi),一級動力學(xué)常數(shù)k分別為0.02251、0.075904及0.142008 min-1:,T=80℃時, Na2S208濃度范圍為2.5.-10mmol/L時,一級動力學(xué)常數(shù)k分別為0.025762.0.077865.0.141718及0.219304 min-1.(2)對堿性品紅模擬廢水的實驗研究結(jié)果發(fā)現(xiàn),當(dāng)T60℃時,堿性品紅基本完全脫色被降解；Fe2+/Na2S208的活化體系中的降解效果與酸性品紅類似,沒有熱活化Na2S2O8效果顯著。堿性品紅在50～60℃時,一級動力學(xué)常數(shù)k分別為0.01155、0.019576、0.0462及0.178149min-1;T=80℃時,Na2S2O8濃度范圍為2.5～10 mmol/L時,一級動力學(xué)常數(shù)k分別為0.077865、0.178149、0.213231及0.241463 min-1。(3)熱活化體系處理印染廢水,T=80℃、pH=3、Na2S208濃度為10mmol/L時降解效果最好,為79.7%；通過正交實驗與響應(yīng)面優(yōu)化比較,傳統(tǒng)正交實驗的優(yōu)化方案為T=80℃.pH=5.Na2S208濃度為10mmol/L.過渡金屬活化體系中,pH=3、Fe2+/Na2S208摩爾比為0.3/2時降解效果最佳,為37.6%；傳統(tǒng)正交實驗的優(yōu)化方案為pH=3.Fe2+/Na2S208摩爾比為0.3/3時效果最佳。響應(yīng)面分析法所得到的優(yōu)化方案與正交實驗的優(yōu)化方案類似。(4)熱活化體系處理焦化廢水,T=80℃.pH=3.Na2S208濃度為25 mmol/L時降解效果最好,為90%；正交實驗的優(yōu)化方案為T=80℃.pH=3.Na2S208濃度為20 mmol/L時最優(yōu)。過渡金屬活化體系中,pH=3、Fe2+/Na2S208摩爾比為0.2/2時降解效果為56.8%；優(yōu)化方案為pH=3、Fe2+/Na2S208摩爾比為0.1/4時降解效果最優(yōu)。響應(yīng)面圖分析固定Na2S2O8投加量時,pH為酸性條件下,溫度越高,COD的去除率最好；pH處于中性偏酸性時,硫酸亞鐵的投加量較大時,COD的去除率較好。
[Abstract]:Advanced oxidation based on sulfate radical is a promising method for wastewater treatment in the field of environment. In this paper, acid fuchsin and alkaline fuchsin simulated wastewater were first studied. The methods of activating sodium persulfate and Fe2 activated sodium persulfate to form sulfate radical were used respectively. The effects of different factors on the oxidation and degradation of simulated wastewater are discussed. Based on this, the experimental study on advanced treatment of wastewater is carried out using the two activation methods mentioned above, taking the actual printing and dyeing wastewater and coking wastewater as the objects. The optimal scheme obtained by traditional orthogonal test and response surface optimization method is analyzed and compared. The main results of this paper are as follows: (1) the experimental study on acidic fuchsin wastewater shows that the acid fuchsin is decolorized and degraded basically at T 70 鈩，

本文編號：1868892