该实验主要研究温度对超声波-陶瓷微滤膜联合净水工艺的影响,以后勤工程学院鱼塘水为原水,调节温度分别为16℃、26℃、36℃、46℃,经超声波处理后进入陶瓷膜组件,滤后水分别通过分子截留量为1 k D、5 k D、10 k D的超滤膜,测试滤后水样的TOC和UV254。发现随温度升高膜通量增加明显,出水水质变差;同时本工艺对不同分子量大小的有机物作用不同,分子量为1 k D以上的有机物随温度升高含量增加;分子量为1 k D以下的有机物随温度升高含量减少,对分子量分布的研究揭示了本工艺水处理的微观规律。 相似文献
To determine the flow behavior of SUS304 stainless steel under different conditions, axisymmetric compression tests were conducted over a wide range of forming temperatures (25 °C to 400 °C) and strain rates (10−3 to 10 s−1). Flow curves were obtained for different forming conditions to study the influence of the forming temperature and strain rate on the flow behavior. Moreover, electron backscatter diffraction analysis, X-ray diffraction analysis, transmission electron microscopy, and Feritscope were used to study the microstructure evolution of SUS304 stainless steel under different conditions for determining the underlying reasons for the variations in flow behavior. The experimental results indicated that the flow stress decreased with increasing the forming temperature. With increasing strain rate at 25 °C to 200 °C, the flow stress first increased and then decreased; however, the strain rate had little effect on the flow stress at 300 °C and 400 °C. By analyzing the variation in the phase transformation inside compressed SUS304 stainless steel samples under different forming conditions, the key factors affecting the flow behavior of stainless steel were identified. Finally, by examining the variation in the martensite content and the dislocation density, the dominant deformation mechanism under different forming conditions was determined.
