造纸黑液厌氧发酵处理及木质素回收应用技术

治理主要对象为造纸厂草浆制浆蒸煮废液——黑液．其性质及污染物指标，随纸张种类、原料和蒸煮工艺的不同，有很大差别．pH值由12至9不等．黑液中含有大量木质G素及半纤维素等有机物质，还有蒸煮药剂及蒸煮过程中的化学产物，成分比较复杂．其COD浓度由22000mg／L至90000mg／L不等，     

液膜法法去除水中Cr（Ⅵ）的研究

本文采用液膜法去除并回收水中Ｃｒ。对膜溶剂，载体，稳定剂的种类及用量进行了优选。用优选出的膜配方制成认处理含Ｃｒ水样，对制膜速度及时间，混合速度及时间，内外水相ＰＨ，膜内比及乳水比等操作条件对Ｃｒ去除率的影响进行了研究。     

废渣──Al(OH)_3凝胶再利用研究

研究了对处理铝材加工含Al3＋的酸性废液过程中产生的二次污染物Al（OH）3凝胶废渣的应用。含水分约90％、80％左右的Al（OH）3凝胶200g分别与14～16mL、22～24mL95％的工业浓硫酸酸反应，可制得浓度为20％～23％的Al（SO4）3溶液，经稀释可用作造纸原料。     

泥炭吸附铬离子的机理研究

我国是世界上泥炭资源较丰富的国家之一。本文选择了在我国具有代表性的低位草木泥炭－新宾泥炭，着重研究了这种泥炭吸附水溶液中三价和六价铬离子的机理。     

二溴硝基偶氮氯膦光度法测定水中微量铬

本文研究了二溴硝基偶氮氯膦与铬(Ⅲ)的显色反应.在pH为3.2的缓冲介质中,铬(Ⅲ)与二溴硝基偶氮氯膦生成1:2的配合物,其最大吸收波长为624nm,摩尔吸光系数ε=1.1×10~4L·mol~(-1)·cm~(-1)铬(Ⅲ)量在0～20μg/25ml范围内符合比尔定律.该法可用于环境水样的分析.     

Experimental study on Cr(Ⅵ) reduction by Pseudomonas aeruginosa

Investigation on Cr( Ⅵ ) reduction was conducted using Pseudomonas aeruginosa. The study demonstrated that the Cr(Ⅵ) canbe effectively reduced to Cr( Ⅲ ) by Pseudomonas aeruginosa. The effects of the factors affecting Cr( Ⅵ ) reduction rate including carbon source type, pH, initial Cr(Ⅵ) concentration and amount of calls inoculum were thoroughly studied. Malate was found to yield maximum biotransformation, followed by succinate and glucose, with the reduction rate of 60.86%, 43. 76% and 28.86% respectively. The optimum pH for Cr( Ⅵ ) reduction was ?.0, with reduction efficiency of 61.71 % being achieved. With the increase of initial Cr(Ⅵ) concentration,the rate of Cr(Ⅵ) reduction decreased. The reduction was inhibited strongly when the initial Cr(Ⅵ) concentration increased to 157 mg/L. As the amount of cells inoculum increased, the rate of Cr( Ⅵ ) reduction also increased. The mechanism of Cr( Ⅵ ) reduction and final products were also analysed. The results suggested that the soluble enzymes appear to be responsible for Cr (Ⅵ) reduction by Pseudomonas aeruginosa, and the reduced Cr( Ⅲ ) was not precipitated in the form of Cr(OH)3.