"电能替代"是治理城市雾霾的重要途径探讨

城市雾霾已经严重影响城市居民的正常生活与工作.研究表明,传统化石燃料在城市及其周边地区终端用户中直接使用是产生城市雾霾的主要原因.为了治理城市雾霾,国家和地方各级政府以及有关单位出台了一系列政策和行动方案.其中,利用绿色能源电能,在生产和生活中,代替传统化石能源,这一方案在城市终端用户中都可以大面积使用电能替代,是阻止城市雾霾的重要举措,电能替代不仅可以有效缓解城市雾霾,还可以提高城市智能化水平,是未来城市发展的重要趋势.     

Progress in research and development of particle electrodes for three-dimensional electrochemical treatment of wastewater: a review

Environmental Science and Pollution Research - A three-dimensional (3D) electrochemical technology is regarded as a very effective industrial wastewater treatment method as it has high treatment...     

Removal of Methylene Blue from Water by Peach Gum Based Composite Aerogels

Journal of Polymers and the Environment - In this study, novel composite aerogels of peach gum/activated carbon (PGAC) and peach gum/graphene oxide (PGGO) were synthesized by freeze-drying method...     

Correction to: Facile synthesis of the magnetic metal–organic framework Fe3O4/Cu3(BTC)2 for efficient dye removal

Environmental Chemistry Letters - Dyeing wastewaters present high hazards for the environment and human health. Advanced dye removal may be achieved by magnetic metal–organic frameworks...     

PPCPs and heavy metals from hydrothermal sewage sludge-derived biochar: migration in wheat and physiological response

Environmental Science and Pollution Research - Once the sludge was directly used in the farmland, it will have a negative impact on human health through the food chain because sludge contains...     

Distribution patterns of lead in urban soil and dust in Shenyang city, Northeast China

We investigated the spatial distribution of Pb in soil and dust samples collected from 54 sites in Shenyang city, Liaoning province, Northeast China. Soil background Pb concentration was 22 mg kg⁻¹ and control values from non-industrial areas were 33 mg kg⁻¹ for soil and 38 mg kg⁻¹ for dust. Soil Pb concentrations varied widely, ranging from 26 to 2911 mg kg⁻¹, with a mean concentration of 200 mg kg⁻¹, 9 times the background value and 6 times the control value. There was great variation in soil Pb, with a coefficient of variation (CV) of 1.06 and a standard deviation (SD) of 212 mg kg⁻¹. Dust Pb concentrations fluctuated from 20 to 2810 mg kg⁻¹, with a mean value of 220 mg kg⁻¹, almost 6 times the control value. No significant differences in distribution were observed between soil Pb and dust Pb. The highest Pb concentration was observed in Tiexi district in an industrial area. Soil Pb concentration decreased with depth and with distance from the pollution source. Lead concentrations initially changed little but then decreased with distance from the roadside, and were generally higher on the east side of roads than on the west. Lead contents in different categories of urban area differed substantially with dust and soil Pb concentrations decreasing in the sequence: industrial >business >mixed (residential, culture and education)> reference areas.     

建筑物应急疏散标识在干扰情境中的大学生视觉行为研究

为降低高校建筑物应急疏散标识周边干扰物对标识识别有效性的影响,找出干扰性最低的组合设计,通过引入尺寸、颜色、形状、位置4个参数,设计18种干扰情境,基于眼动技术,通过试验研究大学生在不同干扰情境下搜寻应急疏散标识的视觉行为.利用方差分析和F-聚类分析,对反应时间、首次进入兴趣区前用时、兴趣区首个注视点持续时间、扫视时间...     

油气田温室气体清单编制的作法

从温室气体统计边界确定、活动水平数据收集、排放量统计到编制形成石油企业需要的温室气体清单,介绍了石油企业温室气体清单编制中,做好编制工作的一些做法,为石油企业实现温室气体减排和控制工作奠定基础。     

Spatio-temporal pattern and rationality of land reclamation and cropland abandonment in mid-eastern Inner Mongolia of China in 1990�C2005

The Mid-eastern Inner Mongolia of China, a typical agro-pastoral transitional zone, has undergone rapid agricultural land use changes including land reclamation and cropland abandonment in past decades due to growing population and food demand, climatic variability, and land use policy such as the "Grain for Green" Project (GFG Project). It is significant to the regional ecology and sustainability to examine the pattern and its rationality of land use change. The processes of land reclamation and cropland abandonment were accessed by using land use change dataset for four periods of 1990, 1995, 2000, and 2005, derived from the interpretation of Landsat TM images. And then the rationality of land reclamation and cropland abandonment was analyzed based on the habitat suitability for cultivation. The results indicated that: (1) land reclamation was the dominant form of agricultural land use change from 1990 to 2005, the total cropland area increased from 64,954.64 km(2) in 1990 to 76,258.51 km(2) in 2005; However, the speed of land reclamation decreased while cropland abandonment increased around 2000. The Land Reclamation Degree decreased from 1995-2000 to 2000-2005, meanwhile, Cropland Abandonment Degree increased. (2) As for the habitat suitability levels, moderately and marginally suitable levels had largest areas where cropland was widespread. Pattern of agricultural land use trended to become more rational due to the decrease of land reclamation area in low suitable levels and the increase of cropland abandonment in unsuitable area after 2000. (3) The habitat suitability-based rationality analysis of agricultural land use implicated that the GFG Project should take cultivation habitat suitability assessment into account.     

中国危险废物管理的历史沿革——从"探索起步"到"全面提升"

如何对危险废物进行有效管理已成为当今世界各国政府环境管理部门共同面临的一个重要问题,也是减少危险废物产生量、降低危险废物危害性的关键.回顾了中国危险废物管理法规、制度和利用处置行业的建立和发展过程,并根据对危险废物的认识过程,将中国危险废物管理分为探索起步阶段、体系构建阶段、能力构筑阶段和全面提升阶段,分析了不同阶段的主要特征和重要事件,阐明了当代危险废物管理模式产生的现实必要性和历史必然性,最后提出了中国建设现代化危险废物管理体系的重要意义.本研究可为我国建立设现代化的危险废物管理体系、提升危险废物监管水平提供参考.