CAJ | 학술논문

以焦化废水处理过程产生的泡沫分离液为研究对象,对其进行Fenton催化氧化处理实验,考察H_2O_2用蜃、Fe~(2+)"浓度、pH和反应时间4个因素对处理效果的影响,并结合GC/MS方法比较处理前后泡沫分离液中有机物的种类及其生物降解性的变化.结果表明,采用[H_2O_2]=100 mmol/L、[Fe~(2+)]=100 mg/L、pH=3、反应时间为30 min的Fenton催化氧化反应条件,可以使分离液的COD去除率达到68%以上;经Fenton处理后,分离液的B/C值由0.12提高至0.38,生物降解性明显改善;通过GC/MS的分析,基本明确分离液中含有的有机物主要为酚、胺、腈、酯类有机物及喹啉、吡啶等杂环化合物,大多数属于难降解且生物毒性较强的有机物.针对这些复杂组分共存的泡沫分离液,利用Fenton试剂较强的氧化能力能够将其含有的有毒/难降解有机物转化为低毒或无毒的小分子有机物,为其后续的生物处理创造良好的条件.
이초화폐수처리과정산생적포말분리액위연구대상,대기진행Fenton최화양화처리실험,고찰H_2O_2용신、Fe~(2+)"농도、pH화반응시간4개인소대처리효과적영향,병결합GC/MS방법비교처리전후포말분리액중유궤물적충류급기생물강해성적변화.결과표명,채용[H_2O_2]=100 mmol/L、[Fe~(2+)]=100 mg/L、pH=3、반응시간위30 min적Fenton최화양화반응조건,가이사분리액적COD거제솔체도68%이상;경Fenton처리후,분리액적B/C치유0.12제고지0.38,생물강해성명현개선;통과GC/MS적분석,기본명학분리액중함유적유궤물주요위분、알、정、지류유궤물급규람、필정등잡배화합물,대다수속우난강해차생물독성교강적유궤물.침대저사복잡조분공존적포말분리액,이용Fenton시제교강적양화능력능구장기함유적유독/난강해유궤물전화위저독혹무독적소분자유궤물,위기후속적생물처리창조량호적조건.
The foaming wastewater from coking wastewater station was studied. It was treated by Fenton ox-idation technology. The effects of H_2O_2 dosage,Fe~(2+) concentration,pH and reaction time on the process were reviewed. The biodegradability was compared through hiodegradation experiment and organic compounds in the foaming wastewater analyzed by GC/MS method. The results indicated that COD removal rate of the foaming wastewater could reach 68% when [H_2O_2] = 100 mmoL/L,[Fe~(2+)]= 100 mg/L,pH =3 and the reaction time 30 min. The B/C value was increased from 0. 12 to 0. 38 after Fenton oxidation. The foaming wastewater con-tained kinds of organic pollutants,such as phenols,anilines,nitriles,esters,quinoline,pyridine and so on.Most of the pollutants belonged to non-biodegradable compounds and presented high toxicity. Fenton reagent had strong ability for oxidizing the hard-biodegradable compounds and could turn them into low-toxic or nontoxic products with small molecular structure. Therefore,Fenton oxidation process could create a better environment for the post-treatment of foaming wastewater.