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41.
对2种便携式烟气预处理器在比对监测中的实际应用进行探讨,通过对2种烟气预处理器工作原理及在实际应用中的监测数据进行分析比较,显示在"高湿低硫"条件下,电子冷凝预处理器析出的冷凝液会造成二氧化硫的损失,在应用中应加快除水,减少烟气与冷凝水接触的时间,并防止冷凝液出现在伴热管线与预处理器烟气入口之间。而便携式Nafion预处理器由于具有独特的干燥性能,抗干扰能力,在"高湿低硫"的比对监测中具有较好的可比性和适用性。 相似文献
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本文研究了去除浊度方法的不同是否会导致各监测单位测定结果可比性差异。首先,通过在线自动监测仪器法和实验室钼酸铵分光光度法测定水中总磷浓度的比对实验所得出的监测数据结果发现,两者的结果误差较小,说明自动监测仪器分析结果与常规实验室手工法测定结果基本一致,未发现可比性差异,同样稳定可靠。同时,通过实验系统研究了手工法中应用浊度-色度补偿法、过滤法及离心法等去除浊度干扰的前处理方法,实验结果表明:三种分析方法测定结果基本一致,精密度和加标回收率均符合质量控制要求,测定结果无显著差异。 相似文献
44.
Jiahua Pan 《Environmental management》1994,18(1):33-42
Nitrate pollution has caused serious environmental concerns, but its control is often complicated by its diffuse nature. In
most cases, nitrate control has been linked to either nitrogen input or leaching. By incorporating the relationship among
land use, fertilizer application, and nitrogen leaching into a linear programming model, this analysis investigates the comparative
effectiveness between input and leaching control. The empirical results from a groundwater catchment in eastern England suggest
that leaching control can be more cost-effective in nitrate reduction than fertilizer input control. The implications for
control of nitrate leaching through incentives systems are discussed. 相似文献
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Acidithiobacillus ferrooxidans ATCC23270 and Acidithiobacillus thiooxidans TM-32 were used for bioleaching of spent refractories of aluminium and copper melting furnaces for their recycling.Firstly,penetration of elements into aluminium melting furnace refractory was investigated and it was found that up to 7 cm from surface was contaminated.Comparison on leaching efficiency by the strains ATCC23270 and TM-32 found that the strain ATCC23270 could treat larger amount of the refractories than the strain TM-32 could do.In the experiment of bioleaching of spent refractory aluminium melting furnace by the strain ATCC23270,high leaching efficiency were obtained on Al,Si,and Ca,and extremely low leaching performance was,however,shown on the rest of elements i.e.,Na,Mn,and Zn.Under the strain TM-32 use,relatively high leaching performance was recognized on Al,Si,Ca,Na,Mn,and Zn.In the experiment of bioleaching for spent refractory copper melting furnace,almost the same leaching trends were shown on Cu,Zn,Al,and Si under the strains ACTT23270 and TM-32 uses. 相似文献
47.
Jeroen C. van den Bergh 《Regional Environmental Change》2001,2(1):13-23
This article provides a short overview of the main themes of ecological economics (EE). It is argued that EE provides a platform
that fosters multidisciplinary environmental research by bringing together the core contributing disciplines – economics and
ecology. In addition, EE is regarded as a pluralistic approach to environmental research that can be set opposite to, and
has indeed developed as a response to, traditional environmental and resource economics. A comparison of the two fields is
presented to clarify the essential differences between them. In addition, specific themes are examined in more detail. These
include: sustainable development; the growth debate; international trade; dynamic processes; and behaviour and policy.
Electronic Publication 相似文献
48.
分析大胜关水质自动监测站建成运行后2015—2018年每月实际水样比对数据,并与同期建设固定式水站水样比对结果比较,探讨趸船式水站的技术可行性.结果表明:趸船式水站自动监测的pH值、溶解氧、电导率、氨氮指标与实验室数据有较好一致性,相关性均>0.7,且显著性概率<0.01,存在非常显著的相关关系,pH值、电导率、高锰酸... 相似文献
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固定源测试体系的中美比较与借鉴 总被引:1,自引:0,他引:1
对中美两国固定源测试技术体系进行总结并按照辅助类参数、烟气类污染物、烟尘类污染物、有机类污染物、元素及卤化物、在线监测规范进行分类并比较,指出两国测试体系的异同。结合目前形势指出中国烟尘、烟气及VOCs类污染物监测体系面临问题并提出建议。 相似文献