城市污水厂水质相关性及分布状态的研究和应用

采用统计学及质量控制的一些基本理论及方法对污水处理厂的运行数据进行分析,得出城市污水处理厂BOD5、COD、SS、TN、TP等主要出水指标呈正态分布的规律;城市污水BOD5、COD、TN、TP等指标间存在显著线性相关性的结论.研究结论可用于污水处理厂制定经济合理的出水监测方案以及对污水处理厂运行可靠性等进行评估.     

利用废渣盐石膏制作轻型墙体材料

研究利用海盐化工产生的废渣盐石膏经过一定工艺处理,生产轻型墙体材料盐石膏空心条板,该产品与天然石膏空心条板相比,原料采用及生产工艺都有较大改进,生产成本却大幅度下降。经测试,该产品完全可替代天然石膏空心条板,技术性能指标达到了国家规定的相关标准。     

Psychological Reactance From Reading Basic Facts on Climate Change: The Role of Prior Views and Political Identification

Scholars continue to search for solutions to shift climate change skeptics’ views on climate science and policy. However, research has shown that certain audiences are resistant to change regarding environmental issues. To explore this issue further, we examine the presence of reactance among different audiences in response to simple, yet prominently used, climate change messages. Our results show that emphasizing the scientific consensus of climate change produces reactance, but only among people who question the existence of climate change. Moreover, adding political identification to the model as an additional moderating variable shows the increases in reactance occur among Republicans who question the existence of climate change. Finally, our results show that reactance to climate change messaging may lead to backfiring effects on important outcomes tied to climate change such as risk perceptions, climate change beliefs, and support for mitigation policies.     

Combination with catalyzed Fe(0)-carbon microelectrolysis and activated carbon adsorption for advanced reclaimed water treatment: simultaneous nitrate and biorefractory organics removal

A process combining catalyzed Fe(0)-carbon microelectrolysis (IC-ME) with activated carbon (AC) adsorption was developed for advanced reclaimed water treatment. Simultaneous nitrate reduction and chemical oxygen demand (COD) removal were achieved, and the effects of composite catalyst (CC) addition, AC addition, and initial pH were investigated. The reaction kinetics and reaction mechanisms were calculated and analyzed. The results showed that CC addition could enhance the reduction rate of nitrate and effectively inhibit the production of ammonia. Moreover, AC addition increased the adsorption capacity of biorefractory organic compounds (BROs) and enhanced the degradation of BRO. The reduction of NO₃^?–N at different pH values was consistently greater than 96.9%, and NH₄⁺–N was suppressed by high pH. The presence of CC ensured the reaction rate of IC-ME at high pH. The reaction kinetics orders and constants were calculated. Catalyzed iron scrap (IS)-AC showed much better nitrate reduction and BRO degradation performances than IS-AC and AC. The IC-ME showed great potential for application to nitrate and BRO reduction in reclaimed water.

     

Estimate on spillover effect of environmental pollution between peripheral areas

ABSTRACT

Interaction of environmental pollution between peripheral areas has become a central topic in the field of resources and environment but little is known about the actual impact on peripheral areas in the current literature. This paper sets out a simultaneous equation model to investigate the spillover effect of environmental pollution between China’s peripheral areas utilizing the panel data of 218 cities in China. Making use of indicators for measuring the impact on environmental pollution, it identifies that environmental pollution between cities of China has a significant two-way spillover effect. After standardization of variables, it is found that the spillover effect of peripheral areas on urban environmental pollution cannot be neglected. Nearly, a third of the environmental pollution level in a city is induced by the environmental pollution in peripheral areas. If the indicator of environmental pollution in peripheral areas is missing, wrong conclusions will be drawn. Therefore, government should shift the emphasis of environmental regulation from local to global, and improve the overall environmental quality through coordinated management of regional environment.     

The associations of air pollution exposure during pregnancy with fetal growth and anthropometric measurements at birth: a systematic review and meta-analysis

Environmental Science and Pollution Research - Fetal growth has been demonstrated to be an important predictor of perinatal and postnatal health. Although the effects of maternal exposure to air...     

湖北长江三峡地区山水林田湖草生态保护修复形势与对策研究

文章重点分析了湖北长江三峡地区生态功能定位、生态保护修复重点,剖析了湖北长江三峡地区山水林田湖草生态保护修复形势,在介绍湖北长江三峡地区山水林田湖草生态保护修复工程试点的基础上,深入分析了该工程试点推进中的难点问题。提出了相应对策：坚持用系统思维推进山水林田湖草整体保护和修复;加强生态环境问题突出区域重点攻坚,着力解决生态保护修复不充分、不平衡问题;加大社会资本、绿色金融支持力度,健全多元化、差异化资金供给及管理机制;积极探索生态产品及废弃资源价值转化新途径;加强科技支撑、坚持自主创新、打造精品示范工程;提升建设项目服务水平,加强生态环境监测及风险应急能力建设。     

用膨润土处理油田污水的研究进展

介绍了膨润土的基本特性及其存油田污水处理中的研究情况。天然膨润土经改性后,可吸附去除油田污水中的油、烃类衍生物、注聚残留聚合物及表面活性剂;负载金属氧化物的改性膨润土可对光催化氧化产生协同效应,提高光催化氧化油田污水中有机物的能力;在高压下将膨润土制成薄膜,对油田污水中的无机离了有一定的截留去除作用。     

煤气脱硫废料综合利用新工艺

针对煤气脱硫废料（简称废料）的成分（硫、碳、萘及少量其他有机物）,提出了一种处理废料的新工艺,先用乙酸乙酯提取废料中的萘和少量其他有机物,再用复合溶剂B加热溶解废料,热过滤得碳粉,最后将溶液冷却结晶分离出硫。实验结果表明：在乙酸乙酯与废料的质量比（R1）为3.75,提取温度为60℃,提取时间为4h的条件下,萘回收率为98%,纯度大于等于70%,在复合溶剂B与提取剩余物的质量比（R2）为2.69,过滤温度为100℃的条件下,硫回收率接近100%,纯度大于等于99%,碳回收率和纯度为100%。     

钢渣吸附Pb2+的动力学研究

采用批式振荡吸附法研究了钢渣吸附Pb^2＋的动力学。研究结果表明,钢渣吸附Pb^2＋的动力学控制步骤（简称动力学控制步骤）随实验条件的变化而变化：钢渣粒径大于120μm、振荡器转速小于150r/min或Pb^2＋初始质量浓度小于150mg/L时,孔扩散是动力学控制步骤;钢渣粒径小于120μm、振荡器转速大于150r/min或Pb^2＋初始质量浓度大于150mg/L时,表面扩散是动力学控制步骤;钢渣对Pb^2＋的吸附反应是二级反应,其吸附速率为13.26g/（mg.min）。