2-Chlorophenol oxidation kinetic by photo-assisted Fenton process

Experimental data are presented to test and validate a kinetic model for the oxidation of 2-chlorophenol wastewater by photo-assisted Fenton process. The data showed that this process had produced good effects under acidic conductions. Up to 90% 2-chlorophenol was removed after 90-minute reaction time with H2O2 of 25% CODCr. in, while in UV/H2O2 system ordy 16.8% 2-chlorophenol was removed after one hour treatment. The optimal pH in this reaction occurred between pH 3.0 and pH 4.0. The reaction kinetics for photo-assisted Fenton process experimented in this research was investigated. Kinetic models were proposed for the treatment of 2-chlorophenol wastewater. The reaction was found to follow the 2nd order. The equations of reaction kinetics are as follows:-d[RH]/dt=KRH[RH][H2O2]0exp(-KH2o2t);-d[CODCr]/dt=KCODCr[CODCr][H2O2]0exp(-K′t).The prediction of the models was found to be in a good agreement with experimental results, thus confimfing the proposed reaction mechanism.     

浅谈苯并（a）芘

环境污染对人体健康的危害已为世人所关注，二恶英事件的发生使得人类对有机化合物的污染更趋重视，在众多有机化学污染物中，苯并（a)芘的毒性不但可与二恶英并驾齐驱，甚至有过之而无不及，世界卫生组织国际癌症研究中心经大量的动物试验以及临床观察分析，指定其为一级致癌物质，本文将与大家一起探讨，揭示其本质。     

运用唯物主义搞好循环经济

我们知道，发展循环经济是实施可持续发展的重要途径和形式。但要看到，循环经济是辩证唯物主义基本原理发展的产物，也是辩证唯物主义基本原理在社会生产实践中的具体运用，包含着深刻的哲学道理。运用唯物主义搞好循环经济，是实现经济持续性的重要保证。物质不会消失，资源永恒存在按照辩证唯物主义基本原理，世界的本质是物质的。物质的具体形态虽然是可以变化的，但是物质本身则是永恒存在的，它既不能被创造，也不能被消灭。比如，飞机、汽车不是工厂凭空生产出来的，它是用钢铁等原材料经过加工制造出来的，而钢铁是由矿山里开采出来…     

焦化废水的处理及废水中有机污染物的测定（Ⅰ）

本文叙述了焦化废水的来源及处理，讨论了ＧＣ—ＭＳ条件以及用Ｌ—Ｌ萃取和Ｃ１８与硅胶微柱层析法对水样进行前处理，测出了２４４种有机污染物，指出了各类有机污染物去除难易的顺序．     

Prediction for emission of trace gases by GM(1，1)model

This paper recommend the grey control system model(GM 1,1 )to approach the problem of prediction for emission of trace gases．When the number of data in the system is not enough for mathermatics statistics analysis，the application of GM(1，1)model can get available results．This model can be used for prediction of emission trace gases and trend of global concentration of C0₂．The atmospheric concentration of CO₂ will be 365.9 ppmv by the year 2000 The prediction for emission of CO₂ from buming coal will be 1123．3 TgC in China．The emissions of CO in China are estimated．     

厌氧—好氧—生物炭系统处理印染废水实例

阐述了采用厌氧水解－好氧生物接触－生物炭吸附氧化工艺处理印染废水的工艺流程、原理、工艺参数及特点。该系统对印染废水ＣＯＤｃｒ及色度的处理取得良好效果，且污泥量少，节省了污泥处理费用。     

高盐度、高氨氮肠衣废水的治理研究

高盐度、高氨氮肠衣废水经过简单的絮凝预处理后，进行ＰＡＣ－ＳＢＲ生化处理。在原水Ｃｌ￣－，ＮＨ＿３－Ｎ，ＣＯＤｃ＿ｒ浓度分别高达９０００ｍｇ／Ｌ，１４５ｍｇ／Ｌ和２０００ｍｇ／Ｌ时，预处理ＣＯＤｃ＿ｒ可去除３０％以上。生化法取得了９５％以上的ＮＨ＿３－Ｎ去除率及９０％左右的ＣＯＤｃ＿ｒ去除率．脱氮效果显著，Ｃｌ￣－对系统的生化能力无明显影响．