针对发电厂废水处理中的高盐、高污染特性,结合多级反渗透(RO)、机械蒸汽再压缩(MVR)蒸发和真空结晶等关键技术,研究了废水“零排放”工艺的优化设计与应用效果。通过参数化建模和技术集成,总回用率达到92%,氯化钠回收率达到98%,晶体纯...针对发电厂废水处理中的高盐、高污染特性,结合多级反渗透(RO)、机械蒸汽再压缩(MVR)蒸发和真空结晶等关键技术,研究了废水“零排放”工艺的优化设计与应用效果。通过参数化建模和技术集成,总回用率达到92%,氯化钠回收率达到98%,晶体纯度符合工业级标准。优化后的工艺能耗为16.2 k W·h/m^(3),单位运行成本降至164.8元/m^(3),显著提升了经济效益。同时,避免了废水直接排放对环境造成的潜在影响。研究结果为工业废水高效处理技术开发与可持续应用提供了重要参考。展开更多
In this paper, we propose a novel image recompression frame- work and image quality assessment （IQA） method to efficiently recompress Internet images. With this framework image size is significantly reduced without ...In this paper, we propose a novel image recompression frame- work and image quality assessment （IQA） method to efficiently recompress Internet images. With this framework image size is significantly reduced without affecting spatial resolution or perceptible quality of the image. With the help of IQA, the relationship between image quality and image evaluation scores can be quickly established, and the optimal quality factor can be obtained quickly and accurately within a pre - determined perceptual quality range. This process ensures the image＇s perceptual quality, which is applied to each input image. The test results show that, using the proposed method, the file size of images can be reduced by about 45%-60% without affecting their visual quality. Moreover, our new image -reeompression framework can be used in to many different application scenarios.展开更多
Monolayers of porphyrin and phthalocyanine at the air-water interface were studied bymeans of film balance and Brewster angle microscopy (BAM). ResultS showed that the final point ofcompression isotherm and that of re...Monolayers of porphyrin and phthalocyanine at the air-water interface were studied bymeans of film balance and Brewster angle microscopy (BAM). ResultS showed that the final point ofcompression isotherm and that of recompression isotherm were coincident or not coincidentdepending on the target pressures. Results were discussed in terms of the morphology of monolayersobserved by BAM.展开更多
文摘针对发电厂废水处理中的高盐、高污染特性,结合多级反渗透(RO)、机械蒸汽再压缩(MVR)蒸发和真空结晶等关键技术,研究了废水“零排放”工艺的优化设计与应用效果。通过参数化建模和技术集成,总回用率达到92%,氯化钠回收率达到98%,晶体纯度符合工业级标准。优化后的工艺能耗为16.2 k W·h/m^(3),单位运行成本降至164.8元/m^(3),显著提升了经济效益。同时,避免了废水直接排放对环境造成的潜在影响。研究结果为工业废水高效处理技术开发与可持续应用提供了重要参考。
基金supported in part by China"973"Program under Grant No.2014CB340303
文摘In this paper, we propose a novel image recompression frame- work and image quality assessment （IQA） method to efficiently recompress Internet images. With this framework image size is significantly reduced without affecting spatial resolution or perceptible quality of the image. With the help of IQA, the relationship between image quality and image evaluation scores can be quickly established, and the optimal quality factor can be obtained quickly and accurately within a pre - determined perceptual quality range. This process ensures the image＇s perceptual quality, which is applied to each input image. The test results show that, using the proposed method, the file size of images can be reduced by about 45%-60% without affecting their visual quality. Moreover, our new image -reeompression framework can be used in to many different application scenarios.
文摘Monolayers of porphyrin and phthalocyanine at the air-water interface were studied bymeans of film balance and Brewster angle microscopy (BAM). ResultS showed that the final point ofcompression isotherm and that of recompression isotherm were coincident or not coincidentdepending on the target pressures. Results were discussed in terms of the morphology of monolayersobserved by BAM.
