工业污染源产排污系数编码方法与应用

编码是将文字信息转换为计算机编程代码的重要工具。为进一步推进工业污染源产排污系数信息化应用,以2017年版产排污系数为核心,根据产排污系数结构及表达方式,建立工业污染源产排污系数编码体系,分别对产污系数和排放量核算参数两部分进行编码。产污系数编码是对表征产污系数的关键因素进行编码,包括行业类型、产污工段、产品、原料、工艺、规模、污染物种类等。排放量核算参数编码是对污染治理技术和治理设施运行效率分别进行编码。再根据各项关键因素的特征、包含信息种类数以及预留一定开发空间等条件,设定编码组成和位数,建立编码方案,并以“3825光伏设备及元器件制造行业”为例进行编码方案应用。产污系数编码为22位,排放量核算参数编码为28位或更多位。产排污系数编码体系的建立为搭建产排污系数信息平台,支撑系数持续更新完善,实现应用于更多环境管理系统提供直接技术支撑。     

洱海西部灌排沟渠水质特征及土地利用的影响

灌排沟渠径流是洱海氮、磷营养盐输入的主要来源。2020年秋季,研究选取洱海西部2个汇水区,分析了降雨条件下汇水区和沟渠子汇水区2个空间尺度下沟渠水质的变化特征,以及土地利用对沟渠水质的影响。结果表明：沟渠水质表现出显著的空间差异性,其中双隐汇水区东南部沟渠化学需氧量（COD）较高,为5.68~20.49 mg/L,北部沟渠总氮（TN）浓度较高,为1.04~1.44 mg/L,总磷（TP）浓度自东向西递减,氨氮（NH₃-N）浓度整体较低;万阳汇水区南部沟渠COD较高,为5.02~14.22 mg/L,TN浓度整体较低,环洱海和中部靠北沟渠TP和NH₃-N浓度整体偏高。冗余分析结果表明,村镇、农田是沟渠TP和NH₃-N的主要来源,秋季库塘未被利用的蓄水也可能对沟渠水质造成影响,林草地面积占比与沟渠水质呈负相关,但由于占比小和空间分布原因,对入海污染负荷的削减效用较小。洱海西部应加强灌溉用水循环利用,完善环湖截污工程,以减少灌排沟渠退水和农村生活污水对洱海水质的影响。

     

One-dimensional modelling of sediment deposition in reservoirs with sinking streams

It is common in karst regions that rivers are occasionally cut by mountains, resulting in the alternate appearances of open channel flow and pressurized flow. With more and more reservoirs being built in this region, the complicated sediment transport processes of such mixture flow are urgently needed to study. In this paper a one-dimensional numerical model with free surface and pressurized flows coupled together is presented. The simulated results are analyzed to explore deposition process in reservoirs with sinking streams; impacts of different hydraulic conditions on the sedimentation are also studied. To verify the computed results, a flume experiment is also conducted. The results show that deposition of sediments mainly occurs in open channel reaches where the longitudinal profile is similar to that of conventional reservoirs, i.e. typical delta has formed, demonstrating characteristics of deltaic deposition morphology in that the crest of delta moves to the downstream direction over time. The model provided by this paper is not only proved to simulate the characteristics of deposition in karst reservoirs successfully, but also reveal the impacts of hydraulic conditions in such circumstances.     

建设项目环境影响评价软件EIA2000介绍 --气象联合频率的统计

本文详细介绍了建设项目环境影响评价软件EIA2 0 0 0中气象联合频率的统计方法及其统计程序。     

战略环评与可持续发展

18世纪开始的那场工业革命改变了世界。然而那场革命所产生的工业化道路却在20世纪走到了尽头。但是在2002年世界首脑会议上。人类再次达成共识：经济、社会、环境必须相互协调才能可持续发展。与此同时，中国将可持续发展确定为基本战略，并提出了树立科学发展观、构建和谐社会、建设资源节约型和环境友好型社会等一系列新理念。     

再谈废催化剂中金属的回收

介绍了含钯,钴,钼,钨的废催化剂的来源及从废催化剂中回收上述金属的工艺。     

乙撑硫脲在土壤中光解的影响因素

研究了土壤湿度、温度和厚度对乙撑硫脲土壤光解的影响,并探讨了这一光解的深度和机制。实验结果表明,土壤湿度对乙撑硫脲光解有最显著的影响;光照下,总放射性在湿土中迅速向土表转移并集中于土表,而在干土中则不发生这种转移;乙撑硫脲在表土层以下2—5mm的土壤中也能发生光解。提出了乙撑硫脲的土壤中的光解,不是直接光解,而是需要O_2存在的间接光解的机制。     

Photoelectrocatalytic degradation of Rose Bengal

An innovative photoelectrode, TiO2/T1 mesh electrode, was prepared by galvanostaticanodisation. The morphology and the crystalline texture of the TiO2 film on mesh electrode were examined by scanning electronic microscopy and Raman spectroscopy respectively. The examination results indicated that the structure and properties of the film depended on anodisation rate, and the anatase was the dominant component under the controlled experimental conditions. Degradation of Rose Bengal (RB) in photocatalytic (PC) and photoelectrocatalytic (PEC) reaction was investigated, the results demonstrated that electric biasing could improve the efficiency of photecatalytic reaction. The measurement results of TOC in photoelectrocatalytic degradation showed that the mineralisation of RB was complete relatively. The comparison between the degradation efficiency of RB in PEC process and that in aqueous TiO2 dispersion was conducted. The results showed that the apparent first-order rate constant of RB degradation in PEC process was larger than that in aqueous dispersion with 0.1%--0.3% TiO2 powder, but was smaller than that in aaueaus disverslon with 1.0% TiO2.     

四环素类抗生素生产废水处理技术进展

四环素类抗生素是临床上广泛运用的广谱抗生素。其生产废水属于高浓度有机废水，pH值较低，成分复杂，有机物、溶解性和胶体性固体、悬浮物含量较高，含有难降解物质和有抑制菌作用的四环素类抗生素及其中间代谢产物。可生化性较差，井具有一定的生物毒性。综述了近年来四环素类抗生素生产废水治理方法的研究进展，介绍了国内外此类废水治理的各种物化处理和生物处理方法及其应用，并提出以后亟待解决的问题。