安徽工程大学学报
安徽工程大學學報
안휘공정대학학보
JOURNAL OF ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE(NATURAL SCIENCE)
2012年
2期
16-19
,共4页
Fenton氧化%焦化废水%难降解有机物%GC-MS分析
Fenton氧化%焦化廢水%難降解有機物%GC-MS分析
Fenton양화%초화폐수%난강해유궤물%GC-MS분석
Fenton's oxidation%response surface methodology%coking wastewater%refractory organics GC-MS analysis%degradation products
利用Box-BehnkenDesign(BBD)的响应面分析方法(RsM),对Fenton试剂法处理焦化废水4个主要因素:初始pH、H2O2用量、EH2O2]/[Fe^2+]摩尔比及反应时间的交互影响进行了分析,得到二次响应曲面模型,表明COD的去除率与各因素存在显著的相关性,以[Fe2+]:[H2O2。](摩尔比)和Hzoz投加量交互影响最为显著。以优化条件pH值为3.60、m(H2O2):re(CODcr)为1.95、[Fe2+]/EH2O2]摩尔比为1:7.43、反应时间30.8min,分别处理原水、缺氧池出水、二沉池出水,COD去除率达到44.60%、47.30%、56.59%.GC—MS分析Fenton氧化法处理前后水样,表明Fenton体系中产生大量的·OH自由基,主要对焦化废水中的挥发酚类和含氮杂环化合物类污染物苯环上的c—c键进行攻击后断裂,降解产物以石油烃类为主及部分的酯类、醇类等.好氧工艺和Fenton法对挥发酚类去除效果显著.
利用Box-BehnkenDesign(BBD)的響應麵分析方法(RsM),對Fenton試劑法處理焦化廢水4箇主要因素:初始pH、H2O2用量、EH2O2]/[Fe^2+]摩爾比及反應時間的交互影響進行瞭分析,得到二次響應麯麵模型,錶明COD的去除率與各因素存在顯著的相關性,以[Fe2+]:[H2O2。](摩爾比)和Hzoz投加量交互影響最為顯著。以優化條件pH值為3.60、m(H2O2):re(CODcr)為1.95、[Fe2+]/EH2O2]摩爾比為1:7.43、反應時間30.8min,分彆處理原水、缺氧池齣水、二沉池齣水,COD去除率達到44.60%、47.30%、56.59%.GC—MS分析Fenton氧化法處理前後水樣,錶明Fenton體繫中產生大量的·OH自由基,主要對焦化廢水中的揮髮酚類和含氮雜環化閤物類汙染物苯環上的c—c鍵進行攻擊後斷裂,降解產物以石油烴類為主及部分的酯類、醇類等.好氧工藝和Fenton法對揮髮酚類去除效果顯著.
이용Box-BehnkenDesign(BBD)적향응면분석방법(RsM),대Fenton시제법처리초화폐수4개주요인소:초시pH、H2O2용량、EH2O2]/[Fe^2+]마이비급반응시간적교호영향진행료분석,득도이차향응곡면모형,표명COD적거제솔여각인소존재현저적상관성,이[Fe2+]:[H2O2。](마이비)화Hzoz투가량교호영향최위현저。이우화조건pH치위3.60、m(H2O2):re(CODcr)위1.95、[Fe2+]/EH2O2]마이비위1:7.43、반응시간30.8min,분별처리원수、결양지출수、이침지출수,COD거제솔체도44.60%、47.30%、56.59%.GC—MS분석Fenton양화법처리전후수양,표명Fenton체계중산생대량적·OH자유기,주요대초화폐수중적휘발분류화함담잡배화합물류오염물분배상적c—c건진행공격후단렬,강해산물이석유경류위주급부분적지류、순류등.호양공예화Fenton법대휘발분류거제효과현저.
The reciprocal effects of initial pH, H2 O2 dosage, [H2O2 ]/[Fez+] molar ratio and reaction time on the coking wastewater treatment by Fenton's reagent were investigated by the response surface analy- sis methods (RSM) of Box-Behnken Design (BBD). The simulation results by quadratic response surface model showed that the interaction influence of [Fe2+]/[H2O2-] (molar ratio) and H2O2 dosage are the most significant factors. The percent COD removal of the raw wastewater, the effluent of aerobic tank and secondary sedimentation tank are 44.60%, 47. 30%, 56.59%, respectively under optimal conditions that pH of 3.60,m(H2O2)/m(CODcr) of 1.95, [Fe2+]/[H202] of 1/7.43 and reaction time of 30.8 min. A great amount of · OH radicals produced due to Fenton's oxidation by the analysis GC-MS method attacked the C-C bond on the benzene ring of volatile phenol and nitrogen heterocyclic compounds pollutants in coking wastewater. The degradation products were mainly petroleum hydrocarbon-based and some of the esters, alcohols, etc. The results indicated the volatile phenols could be removed significantly by aerobic process and the Fenton method.