用SBR1502胶浆制取道路沥青改性用胶乳

用附聚法和降粘法浓缩ＳＢＲ１５０２胶浆制取道路沥青改性用胶乳。结果表明：总固物质量分数可由（２１±２）％上升到４５％～５０％。该胶乳与齐鲁石化公司炼油厂１００号乙沥青混合，改性后的道路沥青具有良好的使用性能，可满足高等级路面沥青的技术要求。     

EM用于SBR反应器处理生活污水

重点讨论了有效微生物群（EM）在SBR反应器中对生活污水的COD、TP、NH3－N和TN的去除效果。试验结果表明，当EM投量（VEM／V污水）为1／10000－1／1000时，能显著提高SBR对COD、TP、NH3－N和TN的去除率和降解速度；当EM投量（VEM／V污水）为1／100000－5／1000时，对TN的去除率随EM量的增加而逐渐提高；当EM投量为1／10000时，能显著缩短SBR的曝气时间并可节能降耗。     

城市污水处理厂的施工监理

指出施工监理是一项细致而又责任重大的工作。把握好污水处理厂关键工序的施工及检查,才能对污水处理工程进行有效地控制和管理,使之发挥最大的经济和社会效益。     

丁苯胶乳改性道路沥青的推广应用

用丁苯胶乳对胜利１００号沥青进行改性试验．发现随着胶乳掺量的增加．沥青的高温性能、粘结性能改善幅度也大。但综合考虑沥青生产成本等因素．认为：对丁苯胶乳改性胜利１００号道路沥青．掺胶量控制在２％即可满足一般高等级道路工程的需要。文中还介绍了丁苯胶乳沥青近年来的推广使用情况并做了相应的技术经济分析和建议。     

Characteristics of nitrogen and phosphorus removal in SBR and SBBR with different ammonium loading rates

Laboratory scale experiments were conducted to study the deterioration of enhanced biological phosphorus removal (EBPR) due to influent ammonium concentration, and to compare the performance of two types of sequencing batch reactor (SBR) systems, a conventional SBR and sequencing batch biofilm reactor (SBBR). Both in SBR and SBBR, the total nitrogen removal efficiency decreased from 100% to 53% and from 87.5% to 54.4%, respectively, with the increase of influent ammonium concentration from 20 mg/l to 80 mg/l. When the influent ammonium concentration was as low as 20 mg/l (C: N: P=200: 20: 15), denitrifying glycogen-accumulating organisms (DGAOs) were successfully grown and activated by using glucose as a sole carbon source in a lab-scale anaerobic-oxic-anoxic (A₂O) SBR. In the SBR, due to the effect of incomplete denitrification and pH drop, the nitrogen and phosphorus removal efficiency decreased from 77% to 33.3% when the influent ammonium concentration increased from 20 mg/l to 80 mg/l. However, in the SBBR, simultaneous nitrification/denitrification (SND) occurred, and the nitrification rate in the aerobic phase did not change remarkably in spite of the increase in influent ammonium concentration. Phosphorus removal was not affected by the increase of influent ammonium concentration.     

充油S-SBR加工行为的研究

在中试装置上合成相对分子质量分布较宽的充油S-SBR，考察不同环烷油和芳烃油填充量的充油S-SBR的流变性能和混炼行为。结果表明，增大油的填充量能提高充油S-SBR的流动性能，充芳烃油S-SBR相对于充环烷油的S-SBR对温度更敏感，宽相对分子质量分布的充环烷油S-SBR的混炼性能优于S-SBR1204及E-SBRl778，竟相对分子质量分布的充芳烃油S-SBR的混炼性能优于S-SBR1204，Solprene380和E-SBR1712。     

γ－巯基两基三甲氧基硅烷对SBR的接枝改性研究

本文研究了γ－流基丙基三甲氧基硅烷（ＫＨ５９０）对白炭黑填充的ＳＢＲ胶料的光接枝反应。通过接枝反应，提高了橡胶填料间界面粘合性，也提高了硫化胶的３００％定伸模量，改善了撕裂强度、压缩永久变形及耐磨耗性等、此外，在ＮＢＲ中也取得同样改性效果。尤其是，改善了耐碱性。但经照射后在室内放置会增加凝胶化，影响到加工性能．     

Investigation into the effect of carboxylic acid monomer on particle nucleation and growth in emulsifier-free emulsion copolymerization of styrene-butadiene-acrylic acid

Latexes of carboxylated styrene-butadiene rubber were prepared via batch emulsion copolymerization with different amounts of acrylic acid in the absence of emulsifier. The effect of acid monomer was investigated in the particle formation and growth. It was observed that the amount of acrylic acid strongly affected the particle formation. The number of particles and thus polymerization rate increased with increasing of the acid content. There was no significant difference in the polymerization rate per particle in all experiments. The results show that in this case particle growth process is less dependent on the acrylic acid amount in comparison with its influence on nucleation stage and then particle number. Several parameters such as polymerization rate and number of latex particle per unit volume of the aqueous phase were calculated. Attempt was made to evaluate the average number of growing chain per particle. Also average particle diameter of the above carboxylated SBR latexes was obtained through some calculations from the direct measurement of average particle diameter in the swollen state by light scattering technique for the first time.