Mineral‐induced degradation of halogentated organic pollutants from aquatic systems

Several laboratory tests were conducted to examine Fe(II) as an enhancing agent in the dehalogenation of CHC1₃ in batch mode. The CHC1₃ degradation was found to be negligible when only Fe(II) is present as a reductant in the (aqueous) reaction system. However, in the presence of Fe(II) coated goethite, the rate of CHC1₃ degradation was enhanced to some extent. This observation can be explained by considering a surface mediated electron transfer step in the overall process. Substantial increase of the degradation rate was observed when the goethite particles first coated with fulvic acid were employed in the adsorption of Fe(II) for the degradation of CHC1₃.     

氮肥工业的环保管理

叙述氮肥厂（氨／尿素装置）排放源点及其治理工艺概况与效率。氮肥厂两大排放治理难点：驰放气引入一段炉燃烧系统导致烟气中NOx含量增高及尿素喷淋造粒塔粉尘，一时尚难根治，其余属有效控制技术。新建及原有氮肥厂可采取将排水处理后返回系统利用的措施，使排放量降至最低且符合国定指标。     

A REVIEW OF HEAVY METAL POLLUTION IN THE PEARL RIVER ESTUARY

Since 70‘s, the economy and society in the Pearl River Delta region have been undergoing a great development. Pollution control and environment protection have received much public attention. As heavy metals are an important toxic pollutant source in this area and are not biodegradable in general, a lot of scientists in China, especially in Southern China, devote their focus on studying the pollution caused by heavy metals in the Pearl River Estuary (PRE). This paper presents a comprehensive review on the heavy metal pollution research and its related research in this area. It is suggested that the study of heavy metal pollution in PRE should be coupled with water movement, sediment motion and tidal characteristics in this region. Studying core sediments in various locations is recommended to reveal the history of heavy metal pollution in PRE and improve the understanding of the fate and transport of metals.     

聚乙烯醇薄膜研究进展

从聚乙烯醇薄膜的截流率、膜分离系数、耐老化性、光学性能、力学及吸水性能、气体渗透性、膜对污染物的阻挡、导电性、阻醇性、物质的选择性等不同方面，介绍了近几年来国内外的科研单位采用各种不同的研究方式对聚乙烯醇薄膜的各种性能进行研究的情况。可知目前国内外对聚乙烯醇薄膜的研究十分活跃。     

矿用柴油机尾气净化的问题及其解决途径

本文论述了矿用柴油机尾气净化的几种主要方法所存在的问题,提出了目前其有效的解决途径是采用机内和机外联合净化法。催化净化是联合净化法的主体,辅助净化方法是采用添加剂和喷雾式水箱。采用以堇青石蜂窝陶瓷为载体的稀土催化剂可解决γ-Al_2O_3球状、六棱柱蜂窝状铂或稀土催化剂易破碎、磨损和使用寿命过短的问题,资源型催化剂的研究对柴油机尾气净化也十分有意义。     

轧机水污染物控制实践

萍湘二轧厂水污染自投产开始就得以解决。通过对浊环水的一次沉淀和二次化学除油器的加药处理，使污染物排放得到了有效控制。取得了明显的环境效益和经济效益。     

Unravelling Chinese industrial structure optimization paths within Regional Comprehensive Economic Partnership considering the virtual trade of water and water pollutants

Massive commodity transactions lead to enormous virtual water and water pollution transfer; this phenomenon will be intensified within the process of Regional Comprehensive Economic Partnership (RCEP) enforcement. This study applied multi-regional input–output and scenario simulation approach to reveal the virtual water elements flow, while exploring the trade structure optimisation roadmap for China. Results unveiled that China was a virtual water net exporter (9.17 billion tons), also the largest importer of water pollutants (N 622456 tons and P 136110 tons) among RCEP countries in 2015. In order to alleviate the water pressure in China, the textiles and other manufacturing industries should be limited, while the service industry is encouraged. Optimal scenario can realize 29.8% water conservation and 8% water pollutants reduction and also achieve a 36.5 million dollars trade volume increase. This research improves trade-off balance between water environment and economy at multi-regional level and accelerates green trade in economic partnerships globally.     

考虑污染物排放约束的传统电厂与虚拟电厂间环境经济调度模型

为有效实现分布式能源(distributed energy resource,DER)单元参与电力系统能源市场,深度挖掘负荷侧灵活供能潜力,首先建立虚拟电厂(virtual power plant,VPP)作为管理运行分布式能源的代理模型,并基于组件特性分析对虚拟电厂的外特性进行了量化;然后基于当前电力行业面临的经济环境热点问题,建立了考虑污染物排放约束的传统电厂(conventional power plant,CPP)和虚拟电厂间的环境经济调度(environmental economic dispatch,EED)二阶约束二阶规划(quadratically constraint quadratic programming,QCQP)模型;接着介绍了CPLEX优化引擎和YALMIP软件包的功能,并采用建模与求解解耦的方式来求解模型;最后对改进10机系统进行仿真计算,验证了所提模型的有效性和正确性。     

中央空调系统的污染问题及解决方法

从中央空调系统中污染物的来源、危害及清洗污染物后产生的效果,阐述中央空调系统清洁对空气品质及能耗的重要意义。     

燃气计量估量二三事简

如何确定燃气计量器具出现故障后的燃气流量计量,重庆燃气集团公司对此主要有3种估量方式：（1）根据前3天用气量估量,（2）根据去年同期数据估量,（3）根据实际用气状况和用气设备运行情况估量。文章结合3个燃气仪表计量估量案例,对重庆燃气集团公司的估量方式进行了剖析,发现其不足之处,提出了新的解决方法。