湿式氧化法处理汽油碱渣和液态烃碱渣

介绍了湿式氧化法处理洛阳分公司汽油碱渣和液态烃碱渣的工艺原理和运行效果.     

稀土酞菁锰对表面活性剂(LAS)的催化氧化性能研究

研究了一种新型含稀土酞菁锰(KCeO2MnPcX)催化剂对水中表面活性剂直链烷基苯磺酸钠(LAS)氧化降解的催化性能,讨论了影响催化氧化反应的各种因素,并确定了最佳反应条件。同时初步探讨了这种催化剂对表面活性剂的催化氧化机理,为处理表面活性剂废水提供了新的途径。     

Quantification of potassium permanganate consumption and PCE oxidation in subsurface materials

A series of laboratory scale batch slurry experiments were conducted in order to establish a data set for oxidant demand by sandy and clayey subsurface materials as well as to identify the reaction kinetic rates of permanganate (MnO(4)(-)) consumption and PCE oxidation as a function of the MnO(4)(-) concentration. The laboratory experiments were carried out with 31 sandy and clayey subsurface sediments from 12 Danish sites. The results show that the consumption of MnO(4)(-) by reaction with the sediment, termed the natural oxidant demand (NOD), is the primary reaction with regards to quantification of MnO(4)(-) consumption. Dissolved PCE in concentrations up to 100 mg/l in the sediments investigated is not a significant factor in the total MnO(4)(-) consumption. Consumption of MnO(4)(-) increases with an increasing initial MnO(4)(-) concentration. The sediment type is also important as NOD is (generally) higher in clayey than in sandy sediments for a given MnO(4)(-) concentration. For the different sediment types the typical NOD values are 0.5-2 g MnO(4)(-)/kg dry weight (dw) for glacial meltwater sand, 1-8 g MnO(4)(-)/kg dw for sandy till and 5-20 g MnO(4)(-)/kg dw for clayey till. The long term consumption of MnO(4)(-) and oxidation of PCE can not be described with a single rate constant, as the total MnO(4)(-) reduction is comprised of several different reactions with individual rates. During the initial hours of reaction, first order kinetics can be applied, where the short term first order rate constants for consumption of MnO(4)(-) and oxidation of PCE are 0.05-0.5 h(-1) and 0.5-4.5 h(-1), respectively. The sediment does not act as an instantaneous sink for MnO(4)(-). The consumption of MnO(4)(-) by reaction with the reactive species in the sediment is the result of several parallel reactions, during which the reaction between the contaminant and MnO(4)(-) also takes place. Hence, application of low MnO(4)(-) concentrations can cause partly oxidation of PCE, as the oxidant demand of the sediment does not need to be met fully before PCE is oxidised.     

内电解法处理工业废水技术的试验

用内电地对印染废水，靛兰生产废水，电镀废水及炼油厂含油废水进行了试验。结果表明，ＣＯＤＣｒ的去除率可达５０％＿７０％，色度，硝基苯，酚，重金属离子及油的去除率可达９０％以上。     

乙烯裂解废碱氧化影响因素分析

就影响独山子石化公司乙烯裂解装置废碱液氧化反应的因素，在实验室小试规模试验的基础上，对影响因素进行分析和探讨，着重分析了装置在运行过程中出现的问题和存在的不足，在对现有装置工艺不做大的改动的前提下，提出了装置的技术改造建议。     

含铬固体废渣中Cr~(3+) 的氧化

研究了ｐＨ、温度对铬渣中Ｃｒ３＋的氧化速率的影响．结果表明，在碱性条件下，空气中的氧气具有相当强的氧化性，足以将Ｃｒ３＋氧化为Ｃｒ６＋，且随ｐＨ、温度的升高而加快．     

改良A2/O型氧化沟处理城市污水工程实例

介绍了重庆市童家溪区污水处理厂的工艺流程,及其各构筑物和主要设备的参数.该工艺采用改良A2/O型氧化沟处理城市污水,该工艺将A2/O与氧化沟相结合,具有两者的优点,且能耗省、脱N除P的特点,出水水质达到<城镇污水处理厂污染物排放标准>(GB18918-2002)中的一级标准的B标准.     

含氰废水的氧化处理

介绍了处理含氰废水碱氯氧化法、双氧水氧化法、臭氧氧化法等几种氧化法的基本原理，并进行了对比分析。     

氧化沟污水处理技术在炼油厂的实际应用

本文简明地阐述了氧化沟污水处理技术的工艺原理及特点，着重指出了该工艺中溶解氧实时控制的重要性，使沧州炼油厂污水处理效果有了明显提高     

Oxidation of As(Ⅲ) by potassium permanganate

The oxidation of As(Ⅲ) with potassium permanganate was studied under conditions including pH, initial As(Ⅲ) concentration and dosage of Mn(Ⅶ). The results have shown that potassium permanganate was an effective agent for oxidizing of As(Ⅲ) in a wide pH range. The pH value of tested water was not a significant factor affecting the oxidation of As(Ⅲ) by Mn(Ⅶ). Although theoretical redox analyses suggest that Mn(Ⅶ) should have better performance in oxidization of As(Ⅲ) within lower pH ranges, the experimental results show that the oxidation efficiencies of As(Ⅲ) under basic and acidic conditions were similar, which may be due to the adsorption of As(Ⅲ) on the Mn(OH)2 and MnO2 resulting from the oxidation of As(Ⅲ).