库车坳陷复合盐层高密度环保钻井液技术研究

通过对处理剂环保性能评价及作用效果优选、高密度环保钻井液配方及其钻井液的流变性、失水性、抗温性、抑制性、抗污染等综合性能评价等一系列实验研究,形成了一套适合山前构造带的环保钻井液体系。该钻井液具有无毒、易降解、密度高(2.0g/cm3和2.3g/cm3)、高温高压失水低、流变性好、抗高温可达130～140℃,性能稳定,抑制性、润滑性能好,抗污染能力强,既能够满足复合盐层钻井工程需求,又具环保性能好的特点。     

Co-composting of fresh tobacco leaves and soil: an exploration on the utilization of fresh tobacco waste in farmland

Environmental Science and Pollution Research - A large amount of fresh tobacco waste with high water content are produced in farmland, and it may cause environmental pollution if it is not properly...     

The application of Industry 4.0 technologies in sustainable logistics: a systematic literature review (2012–2020) to explore future research opportunities

Nowadays, the market competition becomes increasingly fierce due to diversified customer needs, stringent environmental requirements, and global competitors. One of the most important factors for companies to not only survive but also thrive in today’s competitive market is their logistics performance. This paper aims, through a systematic literature analysis of 115 papers from 2012 to 2020, at presenting quantitative insights and comprehensive overviews of the current and future research landscapes of sustainable logistics in the Industry 4.0 era. The results show that Industry 4.0 technologies provide opportunities for improving the economic efficiency, environmental performance, and social impact of logistics sectors. However, several challenges arise with this technological transformation, i.e., trade-offs among different sustainability indicators, unclear benefits, lifecycle environmental impact, inequity issues, and technology maturity. Thus, to better tackle the current research gaps, future suggestions are given to focus on the balance among different sustainability indicators through the entire lifecycle, human-centric technological transformation, system integration and digital twin, semi-autonomous transportation solutions, smart reverse logistics, and so forth.

     

宽间距长芒刺静电除尘技术的应用

宽间距长芒刺静电除尘技术是国家“九五”科技攻关课题所取得的成果之一。由于采用宽间距、长芒刺放电极结构和极板涂敷特种防腐涂层 ,降低金属材料消耗的同时 ,降低了宽间距电除尘器电压工作范围 ,避免了使用超高压电源所致的绝缘难题 ,大大减少了静电除尘器的初期投资。笔者将该成果应用于某水泥厂生料磨系统 ,现场使用效果表明 ,该除尘技术不仅可有效改善作业环境 ,且工作电流、电压稳定 ,收尘效率高 ,设备阻力低 ,运转稳定可靠。     

Hydrostatic burst test 0F X80 grade steel pipe

To evaluate the future application of X80 steel pipe in high-pressure oil and gas pipelines in China, hydrostatic burst tests were performed. The deformation and yield strength of longitudinal submerged arc-welding steel pipe Ф1016 × 18.4 mm under five applied pressure levels were measured. When the hoop stress is lower than 1.1SMYS, the pipe normally deforms elastically and uniformly with the maximum strain less than 0.3%. The slope offsets of the pressure–volume plot of pipe were discussed.     

中国废电器回收处理管理现状及对策研究

中国对废电器的管理起步相对较晚,在管理过程中仍然存在问题和不足,国内外的形势迫切要求中国要不断完善废电器回收处理管理体系,提升废电器回收率,构建多元化、网络化的回收处理管理模式.通过对比和分析国内外废电器的管理措施,结合中国废电器回收处理基金制度取得的主要成效和问题,从法律法规、生产商管理、信息化结合、环保宣传四个方面提出对策和建议.     

150t/d循环流化床生活垃圾焚烧炉的工艺结构与污染排放

垃圾焚烧处理技术在我国的应用越来越广泛 ,单纯引进国外的垃圾焚烧处理技术已经无法满足我国经济发展的需要。清华大学自主开发研制的 15 0t/d循环流化床生活垃圾焚烧炉已经通过专家鉴定 ,各项焚烧污染物排放指标均达到或优于国家标准 ,总体水平居国内领先水平。本文详细介绍了该焚烧炉的系统及结构 ,并对有关控制污染物排放的技术手段进行了详细分析     

面向可持续发展的海岸带综合管理研究

本文以可持续发展为目标，从海岸带综合管理问题入手，进一步分析了海岸带系统的可持续性，阐述了海岸带综合管理的方法论，提出了海岸带综合管理的内涵、原则、任务与技术方法。     

太湖入湖河流总氮与氨氮相关性特征分析研究

针对河流缺少总氮环境质量标准的问题,以太湖流域入湖河流历年多组实测监测数据为基础,选择总氮与氨氮两项指标,开展太湖入湖河流总氮与氨氮相关性研究,总结数据的潜在规律,为有效控制氮排放提供技术支撑.结果表明:氨氮和总氮浓度呈现明显的正相关性.不同水质类别河流中氨氮和总氮关系呈现不同特征,对于Ⅴ类和劣于Ⅴ类等污染较重水体,水体中氨氮形态存在的氮化合物占比较高;对于水质类别较好的水体,氮化合物以其它形态为主.太湖入湖河流以氨氮形态存在的氮化合物总体较高,太湖入湖河流新旧污染同时存在现象较明显.