The effect of light on the Mn(II) or Fet(lll)-catalyzed oxidation of aqueous S(IV)

ＴｈｅｅｆｆｅｃｔｏｆｌｉｇｈｔｏｎｔｈｅＭｎ（ＩＩ）ｏｒＦｅｔｌｌｌ）ｘａｔａｌｙｚｅｄｏｘｉｄａｔｉｏｎｏｆａｑｕｅｏｕｓＳ（ＩＶ）ＸｕＹｏｎｇｆｕ（ＩｎｓｔｉｔｕｔｅｏｆＡｔｍｏｓｐｈｅｒｉｃＰｈｙｓｉｃｓ，ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃ...     

UNITANK+接触氧化工艺处理制皂废水

采用 U NITANK系统和生物接触氧化工艺处理主要污染物为油脂、甘油等的制皂工业废水。经过试验研究 ,工艺参数选择和运行处理效果分析 ,结果证明 ,采用该工艺处理制皂工业废水 ,三格池好氧 U NITANK系统的容积负荷为1.5 kg CODCr/m3· d时 ,COD去除率可达 80 % ,接触氧化池的 COD去除率亦在 80 %左右 ,处理效果稳定     

水解酸化-好氧生物处理天然气脱硫废水的试验研究

通过对环丁砜法脱除天然气中硫生产工艺中产生的废水的试验研究表明，采用生物水解酸化 好氧生物处理工艺较适宜。当进水ＣＯＤＣｒ和ＢＯＤ５浓度分别为４６５ｍｇ／Ｌ和１９５ｍｇ／Ｌ，水解酸化停留时间１２ｈ，好氧生物接触氧化塔停留时间５ｈ时，连续动态试验出水ＣＯＤＣｒ和ＢＯＤ５分别为４２ｍｇ／Ｌ和１６ｍｇ／Ｌ，ＣＯＤＣｒ和ＢＯＤ５的去除率分别达９１％和９２％     

乙醛废水处理的工程实例

溧阳市某化工厂以乙醇氧化法生产乙醛,该厂原有一套污水处理站,但系统出水难以达标.在改造过程中,利用原有污水处理系统,在调节池后新建多级内循环厌氧(MIC)反应器.该废水经过冷却到35～39℃、在调节池加营养和碱调节pH为7左右,MIC反应器进水CODCr约为3200mg/L、HRT为24h时,CODCr去除率为85%以上,MIC出水进入推流式好氧池,采用微孔曝气器曝气,HRT为36h,好氧出水CODCr小于100mg/L.该工艺运行稳定,为乙醛化工企业处理该废水提供一条新途径.     

混凝沉淀-水解酸化-好氧氧化-混凝沉淀工艺处理印染废水

介绍了混凝沉淀-水解酸化-好氧氧化-混合沉淀法在印染废水处理工程中的应用,分析了工程的设计及运行情况.实践表明,该方法在处理色度较大的印染废水过程中,能有效去除各种有机物、色度及部分无机物,抗冲击负荷能力强.     

微波诱导氧化处理雅格素红BF-3B150%染料废水的研究

以颗粒活性炭为催化剂 ,建立了微波诱导氧化工艺 ,对雅格素红BF 3B15 0 %染料废水进行了有效处理 .分别考查了废水初始浓度、微波功率、微波辐照时间、活性炭粒径、活性炭用量和废水pH值对废水处理效果的影响 .该工艺对稀释 10 0倍后的实际废水 (原水COD为 2 82 4 0mg·L-1)最佳处理工艺条件为 :微波辐照时间 6min、微波辐射功率 6 5 0W、活性炭用量为 8g、活性炭粒径 2 0目以下 ,微波诱导催化氧化在酸性条件下比在碱性条件下的处理效果要好 .在此工艺条件下 ,废水脱色率达99 6 %、COD去除率达 96 8% .微波辐射雅格素红染料废水脱色表观反应动力学研究表明 ,该反应近似一级反应 ,动力学常数为 0 735 1min-1,半衰期为 0 94min .微波诱导氧化、活性炭吸附和单纯微波辐射 3种不同工艺的对比实验表明 ,微波诱导氧化工艺具有明显的优越性 ,且不会对环境造成二次污染     

炼油污水回用深度处理的工艺研究

通过大量的试验数据 ,对常规深度处理工艺与悬浮填料生物接触氧化工艺的处理效果进行比较 ,找出一种适合于石化公司炼油污水回用的深度处理工艺。由于该公司炼油污水在同行业中具有代表性 ,因此本研究可以作为相关污水回用处理工艺选择的参考     

氧化沟技术在永夏矿区生活污水处理中的应用

介绍了永夏矿区中心居住区生活污水处理的工艺流程及氧化沟技术处理生活污水的设计特点、运转情况，结论认为该技术具有管理简单、投资较少等方面优点，是一项值得推广的污水处理技术。     

The oxidation of octanoic acid by cultured amniotic fluid cells: The effect of cell type and passage number

We have measured the rate of oxidation of [1⁻¹⁴C]octanoate in cultured amniotic fluid (AF) cells at various passages and in AF cell lines with different clonal morphology. It is possible that both the passage number and the cell type may influence the outcome of prenatal diagnosis of fatty acid oxidation defects using this technique. We found that there was no significant difference between the three major AF cell types (epithelial, large epithelial, and fibroblast) when analysed at identical passage number but there was a significant reduction in octanoate oxidation in all cell types with increasing passage. For reliable prenatal diagnosis, cell lines of similar low passage number should be used.     

Preparation and characterization of a novel blue-TiO2/PbO2-carbon nanotube electrode and its application for degradation of phenol

In this study, we fabricated a blue-TiO₂/PbO₂-carbon nanotube (CNT) electrode in which blue TiO₂ nanotube arrays (blue-TNA) served as the substrate for PbO₂-CNT eletrodeposition. Scanning electron microscope (SEM) showed compact surface structure of the electrode. The β-PbO₂ crystal structure was detected by X-ray diffraction (XRD). The distribution of Pb, O, C, and Na elements on the electrode surface have been confirmed by X-ray photoelectron spectroscopy (XPS). Blue-TiO₂/PbO₂-CNT electrode had higher response current (213.12 mA), larger active surface area and lower charge transfer resistance (2.22 Ω/cm²) than conventional TiO₂/PbO₂-CNT electrode. The influences of current density, initial phenol concentration, initial solution pH, and Na₂SO₄ concentration on the electrochemical oxidation of phenol have been analyzed. The results showed that the 100 mg/L phenol could be destroyed completely after 210 min, and chemical oxygen demand (COD) removal rate was 89.3% within 240 min. Additionally, the electrode showed long actual lifetime (5468.80 hr) and low energy consumption (0.08 kWh/gCOD). A phenol degradation mechanism was proposed by analyzing the intermediate products with high-performance liquid chromatography-mass spectrometry (HPLC-MS). Importantly, the blue-TiO₂/PbO₂-CNT electrode exhibited superior stability and high degradation efficiency after 15 times reuse, demonstrating its promising application potential on phenol-containing wastewater treatment.