化学镀镍液的循环利用及废水处理研究（Ⅱ）──废水处理

研究了镀液组成、温度、时间、漂白粉用量对化学镀镍废液处理结果的影响。结果表明：用漂白粉处理化学镀镍废液是可行的．     

从硼废水中提取硼（Ⅰ）

简要叙述了从硼废水中提取硼的意义，详细介绍了提取硼的实验方法。     

Kinetics of aerobically activated sludge on terylene artificial silk printing and dyeing wastewater treatment

Aerobically activated sludge processing was carried out to treat terylene artificial silk printing and dyeing wastewater (TPD wastewater) in a lab-scale experiment, focusing on the kinetics of the COD removal. The kinetics parameters determined from experiment were applied to evaluate the biological treatability of wastewater. Experiments showed that COD removal could be divided into two stages, in which the ratio BOD/COD (B/C) was the key factor for stage division. At the rapid-removal stage with B/C>0.1, COD removal could be described by a zero order reaction. At the moderate-removal stage with B/C<0.1, COD removal could be described by a first order reaction. Then Monod equation was introduced to indicate COD removal. The reaction rate constant (K) and half saturation constant (K(S)) were 0.0208-0.0642 L/(gMLSS).h and 0.44-0.59 (gCOD)/L respectively at 20 degrees C-35 degrees C. Activation energy (E(a)) was 6.05 x 10(4) J/mol. By comparison of kinetic parameters, the biological treatability of TPD wastewater was superior to that of traditional textile wastewater. But COD removal from TPD-wastewater was much more difficult than that from domestic and industrial wastewater, such as papermaking, beer, phenol wastewater, etc. The expected effluent quality strongly related to un-biodegradable COD and kinetics rather than total COD. The results provide useful basis for further scaling up and efficient operation of TPD wastewater treatment.     

Synthesis of TiO2 supported on activated carbon by MOCVD： operation parameters study

The metallo-organic chemical vapor deposition (MOCVD) technique has been applied to the preparation of the photocatalyst titanium dioxide supported on activated carbon. The effects of various condition parameters such as carrier gas flow rate, source temperature and deposition temperature on the deposition rate were investigated. The maximum deposition rate of 8.2 mg/(g x h) was obtained under conditions of carrier gas flow rate of 400 ml/min, source temperature of 423 K and deposition temperature of 913 K. The deposition rate followed Arrhenius behavior at temperature of 753 K to 913 K, corresponding to activation energy E(a) of 51.09 kJ/mol. TiO(2) existed only in anatase phase when the deposition temperature was 773 K to 973 K. With increase of deposition temperature from 1073 K to 1273 K, the rutile content sharply increased from 7% to 70%. It was found that a deposition temperature of 773 K and a higher source temperature of 448 K resulted in finely dispersed TiO(2) particles, which were mainly in the range of 10-20 nm.     

The mechanism of Fe （Ⅲ）-catalyzed ozonation of phenol

Fe (III)-catalyzed ozonation yielded better degradation rate and extent of COD (Chemical Oxygen Demand) or oxalic acid as compared with oxidation by ozone alone. Two parameters with strong effects on the efficiency of ozonation are pH of the solution and the catalyst (Fe(3+)) dosage. The existence of a critical pH value determining the catalysis of Fe (III) in acid conditions was observed in phenol and oxalic acid systems. The best efficiency of catalysis was obtained at a moderate concentration of the catalyst. A reasonable mechanism of Fe (III)-catalyzed ozonation of phenol was obtained based on the results and literature.     

氟磺胺草醚生产中废水的处理

从试验、设计、调试等方面介绍了可生化性差、氯离子浓度高的氟磺胺草醚生产中废水的处理,该废水经“电解-UA SB-SBR”工艺处理后,出水水质符合《污水综合排放标准(GB 8978-1996)》中二级标准,每立方米废水的处理成本为4.10元.     

RNB-11菌在生物碳滤塔中脱氮性能的研究

通过试验探讨了RNB-11芽孢杆菌在炼油废水深度处理脱氮过程中的生理特性，考察了以该芽孢杆菌为优势菌的生物膜在生物碳滤塔脱氮中的脱氮机理、脱氮效率及其环境影响因素。结果表明，芽孢杆菌主要进行亚硝化脱氮，在氨氮进水浓度25-70mg／L范围内，氨氮去除量与进水氨氮浓度成正比，氨氮的去除率稳定在58％～69％。