改善斜管沉淀池沉淀效果的工程措施

本总结了作多年工程设计经验，介绍了布水及出水均匀性对斜管沉淀池沉淀效果的影响。提出了选择最有利的集水方式的理论依据，得出了淹没孔口集水最有利于均匀出水的结论，并介绍了已在实际工程中应用的改善沉淀效果的工程措施。     

黑腐酸对赤泥沉降分离过程影响的研究

进行了铝土矿中有机物黑腐酸对赤泥沉降性能影响的研究。考查了不同浓度条件下黑腐酸对赤泥沉降速度、溢流浮游物含量和底流压缩液固比的影响，探讨了絮凝剂消除黑腐酸负面作用的条件。     

冷却水的稳定处理和应用

本文介绍了一种新型阻垢剂,一定量的这种阻垢剂加入到冷却水的水池后,可以防止循环冷却水系统的结垢,提高冷却水的质量和换热效果。这种阻垢剂可应用于熔化炉的感应线圈、水冷套和上引连铸机的结晶器水冷系统中。     

Electrokinetic potential of kaolinite clay in the presence of polystyrene sulfonate

The determination of the electrokinetic potential of clay is very important in many applications. Therefore, this work was aimed at studying the effect of poly(4‐ sodium styrene sulfonate) on the electrokinetic potential and the sedimentation behavior of kaolinite clays at different pH values and/or in the presence of sodium or calcium chlorides. At pH values lower than the point of zero charge (PZC) of the kaolinite clay, the zeta potential of Na‐ or Ca‐kaolinite in CaCl₂ solutions was higher than that in NaCl solutions at the same concentration. Above the PZC, the zeta potential of Na‐ or Ca‐kaolinite in NaCl solution was higher than that in CaCl₂ at the same electrolyte concentration. These results reflect the ability of calcium cations to compress the double layer of the kaolinite clay better than sodium cations. Also, below the PZC and at low concentrations of poly(4‐sodium styrene sulfonate), the zeta potential of the kaolinite clay suspensions had low value, while the sediment volumes had higher values. On the other hand, above the PZC at increasing polymer concentrations, the zeta potentials increased but the sediment volumes had lower values compared to those produced below the PZC. The data showed the zeta potential of Na‐kaolinite suspensions are higher than Ca‐kaolinite, producing lower sediment volumes of Na‐kaolinite compared to Ca‐kaolinite at the same concentrations of polymer and/or pHs. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 1705–1711, 2006     

对烟幕微粒的终端沉降速度研究

传统烟幕理论认为，在烟幕形成后，烟幕微粒受到重力的作用开始沉降，同时受到空气阻力和浮力的作用，最后使烟幕微粒达到终端沉降速度，这个速度方程可以通过Stokes圆球阻力理论求得，并被用来分析烟幕的性能。本文通过外场实验研究和理论分析认为，终端沉降速度公式并不适合分析烟幕性能。     

泡沫钻井液颗粒沉降对密度变化规律的影响

泡沫钻井液密度的变化是其应用过程中考虑的重要参数之一,为了研究颗粒沉降对其密度的影响,通过实验测量不同起始密度的泡沫钻井液颗粒沉降引起密度随时间的变化关系,分析密度随时间推移变化的趋势,探求密度随时间变化的规律性.介绍了一种研究泡沫钻井液密度变化的方法,测定和分析了其密度随时间变化的关系,泡沫钻井液密度随时间的变化规律符合Boltzman公式的曲线形式,运用Boltzman公式进行数据曲线拟合,得到了密度随时间、泡沫起始密度等变化的经验公式.该公式的理论计算结果与实验结果相吻合,利用该公式可预测泡沫钻井液密度随时间的变化趋势.     

混凝土施工如何控制裂缝

分析了混凝土施工中常见裂缝的产生原因，并针对不同种类的裂缝介绍了控制措施，从而减少和避免裂缝的发生，提高建筑结构、构件的外观质量，满足结构整体性的要求。     

金沙江流域产沙区和泥沙输移特性分析

本文根据金沙江流域干，支流主要控制站泥沙和径流资料，分析了该流域重点产沙区和泥沙输移特性后得出：该流域泥沙流失严重特别是１９８２年后，由于人类活动影响，致命泥沙以１２．２％的速度增加，应引起有关部门重视，并采取有效的治理措施。     

Material balances of organics and nutrients in an oxidation pond

A series of experiments concerning a tertiary oxidation pond was performed from 10 January to 12 November 1979, using a model oxidation pond of 21 m² in capacity. The concentrations of organics and nutrients in influent and pond water were measured so as to consider the conversion of water quality in a tertiary oxidation pond. The sedimentation rates were measured weekly, and the final sediments were analyzed at the end of experiments, so that the material balances in respect to carbon, nitrogen and phosphorus were calculated and the various transition reactions were evaluated quantitatively. The result of the material balances showed that there were three main reactions in pond: the assimilation to algae; the sedimentation of suspended substance; and the decomposition of sediments. The regeneration rates of nutrients from sediments were so active that the removal of nutrients by algal solidification were not effective. Consequently, the overall removal efficiency of nutrients was 45% in total nitrogen and 43% in total phosphorus by a tertiary oxidation pond with 16 days detention time.