Authentication of emission monitoring data and optimization of desulfurization in the molybdenum roasting process based on BAT-OOPN and the response surface method

Environmental Science and Pollution Research - This paper presents a quantitative pollutant discharge model for a typical molybdenum roasting plant, which combines the best available technology and...     

Feasibility of nanoscale zerovalent iron-loaded sediment-based biochar (nZVI-SBC) for simultaneous removal of nitrate and phosphate: high selectivity toward dinitrogen and synergistic mechanism

Environmental Science and Pollution Research - In the process of water treatment, excessive nitrogen and phosphorus pollutants are of great concern. Therefore, we prepared nanoscale zerovalent iron...     

CO2 dynamic of Lake Donghu highlights the need for long-term monitoring

Environmental Science and Pollution Research - Inland freshwater lakes have been widely considered as significant sources of CO2 to the atmosphere. However, long-term measurements of CO2 dynamics...     

Contextual and organizational factors in sustainable supply chain decision making: grey relational analysis and interpretative structural modeling

Environment, Development and Sustainability - Sustainable supply chain emerges as a major business trend essential to long-term competitive advantage. Relevant corporate decisions concern a broad...     

Probabilistic health risk assessment of nitrosamines in drinking water of Shaoxing,Zhejiang, China

Environmental Science and Pollution Research - Nitrosamines (NAms) are potent genotoxic and carcinogenic but widely detected in drinking water. This study aimed to investigate the occurrence of...     

三峡库区重庆段土壤保持服务时空分布格局研究

土壤保持是生态系统服务与功能的重要组成,在防止土壤侵蚀、减少径流泥沙与农业面源污染等方面具有至关重要的作用。以对国家生态安全具有重要作用的土壤保持生态功能区——三峡库区重庆段为研究区域,研究得到了2000~2013年时间序列区域土壤保持服务"流量"结果,结果表明:(1)三峡库区重庆段多年平均土壤保持量为604.39 t/hm~2·a,沿长江干流自西向东逐渐增强,区域差异显著;(2)三峡库区的土壤保持服务存在明显的垂直分异特征,随着高程的增加,以300 m与900 m为节点,出现递减-递增-递减的分段规律,与人类活动存在明显的相关关系;(3)增加森林覆被面积是改善区域土壤保持、减少水土流失的重要举措。同时,在三峡库区开展坡改梯工程,减少坡耕地的数量能够有效控制区域水土流失;     

The influence of Chinese population policy change on resources and the environment

Universal two-child policy has been implemented since the end of 2015 in China. This policy is anticipated to bring a significant increase in the total population, with profound influences on the resources and environment in the future. This paper analyzes the changing dynamics of urban and rural population, and forecasts urban and rural population from 2016 to 2030 at national and provincial scale using a double log linear regression model. Drawing upon the results of these two predictions, the impact of the population policy change on Chinese resources consumption and environmental pollution are predicted quantitatively. Given the future total population maintains current levels on resources consumption and environmental emission, the additional demand of resources and environment demand for the new population is forecasted and compared against the capacity on supply side. The findings are as follows: after implementing the universal two-child policy, China’s grain, energy consumption, domestic water demand, and pollutant emissions are projected to increase at different rates across provinces. To meet the needs arising from future population growth, food and energy self-sufficiency rate will be significantly reduced in the future, while relying more on imports. Stability of the water supply needs to be improved, especially in Beijing, Henan, Jiangsu, Qinghai, and Sichuan where the gap in future domestic water demand is comparatively larger. Environmental protection and associated governing capability are in urgent need of upgrade not least due to the increasing pressure of pollution.     

硫酸渣制备高纯度硫酸亚铁

以高铁硫酸渣为原料,采用酸浸一还原-除杂-结晶-重结晶-干燥工艺,合成高纯度硫酸亚铁.通过反应温度、反应时闻对硫酸渣中铁的浸出率的影响,以及结晶温度、干燥温度,干燥时间、于燥时间对硫酸亚铁产品纯度的影响做分析实验,得出最佳酸浸条件:硫酸渣与硫酸的固液比为1:3,硫酸质量分数为20%-25%,反应温度为80℃,反应时间为6 h,搅拌强度为200 r/min;最佳结晶精制条件:结晶溶液pH值1:3,温度为60℃,温度海60℃;除杂最佳条件:pH值约为4.5;冷却结晶温度控制在20℃,结晶秣过程为30℃于燥6 h.     

垃圾处理产业化的内涵

垃圾处理产业化是造就一种特定模式,聚合已进入垃圾处理行业的事业体并培育核心事业体的一种过程,一般包括导入、扩散、发展和聚变等4个子过程.产业化应将垃圾处理由公有公益性服务事业转化成服务产业,并最终转化成物质生产的基础产业,涉及到社会再生产的4个环节.宏观来看,涉及到经济、文化和政治等层面.     

电子废物回收处理项目的BOT建设方式初探

在综合概述目前我国电子废物环境管理困境及其障碍性因素的基础上,提出了按BOT（建设-运营-转让）建设方式规划电子废物回收处理项目的建议,简述了BOT目方式的基本特征和项目实施过程中值得商榷的几个问题。