基于VC++的一次设备试验信息管理系统设计与实现

针对目前电气设备种类杂,试验历史数据多的问题,为提高试验历史台账的数据整理效率,减轻操作人员的工作负荷,设计开发了基于VC++6.0平台的一次设备试验信息管理系统软件。应用结果表明:该系统能够确保准确、高效地管理试验历史信息,具有较高的实用价值。     

Removing and recycling mercury from scrubbing solution produced in wet nonferrous metal smelting flue gas purification process

Wet purification technology for nonferrous metal smelting flue gas is important for mercury removal; however, this technology produces a large amounts of spent scrubbing solution that contain mercury. The mercury in these scrubbing solutions pose a great threat to the environment. Therefore, this research provides a novel strategy for removing and recycling mercury from the scrubbing solution, which is significant for decreasing mercury pollution while also allowing for the safe disposal of wastewater and a stable supply of mercury resources. Some critical parameters for the electrochemical reduction of mercury were studied in detail. Additionally, the electrodeposition dynamics and electroreduction mechanism for mercury were evaluated. Results suggested that over 92.4% of mercury could be removed from the scrubbing solution in the form of a Hg-Cu alloy under optimal conditions within 150 min and with a current efficiency of approximately 75%. Additionally, mercury electrodeposition was a quasi-reversible process, and the controlled step was the mass transport of the reactant. A pre-conversion step from Hg(Tu)₄²⁺ to Hg(Tu)₃²⁺ before mercury electroreduction was necessary. Then, the formed Hg(Tu)₃²⁺ on the cathode surface gained electrons step by step. After electrodeposition, the mercury in the spent cathode could be recycled by thermal desorption. The results of the electrochemical reduction of mercury and subsequent recycling provides a practical and easy-to-adopt alternative for recycling mercury resources and decreasing mercury contamination.     

国内外尾矿管理制度比较研究和展望

2020年,《中华人民共和国固体废物污染环境防治法》修订完成,对固体废物的污染防治提出了新的要求。尾矿作为一般工业固体废物中产生量和贮存量最大的种类,存在突出的生态环境问题,已成为当前固体废物管理领域不可忽视的治理短板。通过梳理近年来尾矿产生和处置现状以及尾矿环境风险的特点,对比了国内外尾矿管理制度,并针对完善环境管理法规体系,落实尾矿减量化、资源化以及管控尾矿环境风险提出了对策建议。     

铬污染场地原位修复技术应用现状与展望

六价铬Cr(Ⅵ)是一种来源广泛的重金属污染物,因其形态、价态多样,地球化学反应过程极其复杂,同时国内Cr(Ⅵ)污染场地众多,对其修复具有很大的挑战性。原位修复因不开挖土方、对环境干扰小等诸多优势逐渐成为污染场地修复策略的主流。综述了国内外Cr(Ⅵ)不同类型原位修复技术研究进展,在结合大量原位修复工程案例的基础上重点分析了原位生物、原位化学修复技术与不同注入方式的应用效果。阐明了不同类型原位修复技术的适用地层条件、适用浓度范围、影响半径、修复工期、修复介质、药剂类型及用量与施加方式等关键参数。针对复杂的Cr(Ⅵ)污染场地,建立精准的污染场地概念模型,选取高效适宜的修复药剂和注入方式或者修复工艺组合,是确保修复效果的关键。通过分析现有Cr(Ⅵ)不同原位修复技术在实际应用中的优缺点,探索其在不同场景的适用性,同时对技术发展方向进行了展望。

     

Extraction and characterization of phenolic compounds and their potential antioxidant activities

Environmental Science and Pollution Research - For thousands of years, plant has been widely applied in the medical area and is an important part of human diet. A high content of nutrients could be...