不同栽培基质对石山珍稀濒危植物苗期生长的影响

对 6种石山珍稀濒危植物在石灰岩土壤和酸性红壤上的苗期生长状况及体内化学元素含量进行了对比研究 ,结果表明 :(1 )每种植物在 2种土壤上的物候学特征基本一致 ;(2 )小花异裂菊和青檀在石灰岩土壤上生长量比酸性土壤上高 ,海南椴在酸性土壤上生长量比石灰岩土壤上高 ;(3 ) 6种植物体内Ca、B 2种化学元素的含量是石灰岩土上比酸性土上高 ;除小花异裂菊外 ,Al在其它 5种植物中的含量都是酸性土上高于石灰岩土上 ,小花异裂菊则是石灰岩土上高于酸性土上 ;(4 )K、Zn、B的生物吸收系数是石灰岩土高于酸性土 ,而N、P、Ca、Mg、Fe、Al、Mn则是酸性土高于石灰岩土。     

WFGD添加剂研究进展与应用探讨

从增效机理和应用两方面总结了国内外WFGD添加剂的研究成果,为实际应用中添加剂的选择提供了借鉴,指出WFGD添加剂的研究发展方向是复合添加剂以及发展化工产业副产品或废料用作添加剂的技术。     

石灰石—石膏湿法脱硫装置磨损腐蚀问题分析

分析了目前国内现有石灰石—石膏湿法脱硫装置的磨损防腐问题,简述了在运石灰石—石膏湿法脱硫装置的主要磨损腐蚀环境及相应的防护措施。     

Recovery of Acidified Streams in Forests Treated by Total Catchment Liming

Reduced emissions of acidifying pollutants have changed the acidification process, and as a result, forest soils and surface waters are slowly recovering in Sweden. However, model calculations show that some areas may never recover completely unless further measures, such as liming, are undertaken. Liming of surface waters (lakes, rivers and wetlands) has been successfully practised in Sweden since the 1970s, but repeated treatments are necessary. A full recovery of acidified lakes and streams without frequent liming is however not possible until soil acidification is reversed in the most strongly affected areas. In this study, the recovery of acidified streams was examined using ‘the total catchment approach’ i.e. treatment of both recharge and discharge areas. The aim was to compare the quantitative effect of different treatments on run off chemistry and the recovery of brown trout. Catchments in southwest Sweden were treated with a combination of 2 tons of wood ash and 4, 6 or 12 tons of crushed limestone per hectare in 1998/1999. Treatment of both recharge and discharge areas resulted in fast and significant changes in stream water quality, e.g. increased concentrations of calcium, higher pH and ANC and a decreased concentration of inorganic aluminium. The initial changes were dependent on the distribution of the applied lime between discharge and recharge areas rather than the average dose on the total catchment. Treatment of recharge areas only, resulted in smaller but still significant effects on calcium, pH and ANC in stream water. Furthermore, there was an initial leaching of nitrate but it was only minor compared with the elevated leaching that occurs after a clear-cut. As a result of the treatments, brown trout is now successfully reproducing. Olle Westling (deceased).     

粉煤灰堆放场灰水与基底灰岩的水一岩作用

以焦作市某电厂粉煤版堆放场为研究对象，通过模拟试验，探讨灰场耿水入渗过程中，氟化物及总硬度与基底灰岩发生的水一岩作用。结果表明，在灰水入渗过程中，发生了溶滤及吸附等水一岩作用；灰岩中Ca^2＋、Mg^2＋的淋溶，可能会造成地下水硬度超标；吸附作用表明，石袄岩对灰水中氟有一定的吸附能力，吸附达到饱和后，灰场灰水中的氟继续下渗，导致氟对地下水污染。研究表明，该粉煤灰堆放场对焦作市饮用水水源构成了潜在威胁。     

烟气脱硫过程中添加剂对石灰石的促溶作用

以双搅拌釜为实验设备,研究了烟气脱硫过程中硫酸钠、硫酸镁和腐殖酸钠对石灰石的促溶作用.结果表明,分别采用3种不同添加剂时,pH值等随脱硫反应时间的变化规律类似;与非强化石灰石脱硫过程对比,在相同pH值下,3种添加剂均使石灰石颗粒体积占初始体积的分率rp减小,即均能促进石灰石的溶解,改善浆液的传质性能.通过理论分析,导出了r_p与浆液pH值之间的关系式,该方程能很好地关联双搅拌釜实验数据.     

离柳矿区石炭系薄层灰岩渗透系数空间分布研究

基于矿井涌水量计算及水资源评价需要,首先运用注水试验代替抽水试验,求取了太原组灰岩含水层的渗透系数.根据后期同一含水层井下放水试验资料,利用VISUAL MODFLOW建立了水文地质三维非稳定流数值模型,通过分区拟合调参,获得了含水层各分区的渗透系数.通过对渗透系数及其空间分布规律的对比研究,发现渗透系数随含水层埋深增大而逐渐减小.注水试验比放水试验所得渗透系数值小,前者是后者的35.6％-50.8％.     

燃煤电厂FGD系统中石灰石粉制备技术及在浙江的应用

主要结合浙能乐清发电厂2×600 MW+2×660 MW机组的烟气脱硫所需的石灰石粉的制备技术,对FGD系统中石灰石粉的制备技术的原理、系统流程、石灰石粉制备工艺中需考虑的主要因素等进行一些分析,为燃煤电厂FGD系统石灰石粉的制备技术提供了参考.     

基于SWOT分析的石头纸发展与对策探讨

石头纸的成功研制,并在今年全国＂两会＂期间登场亮相,引来了各界人士的热切关注。文中运用SWOT分析方法对石头纸进行了初步分析,在加工生产、实现工业共生、回收利用和宣传教育方面给予了相关建议,希望能为石头纸的良性发展提供借鉴。     

燃煤火电厂石灰石-石膏湿法烟气脱硫系统日常运行环保监督考核方法探讨

从二氧化硫总量减排环保监督管理的实际出发,结合日常监督工作的实例,分析影响烟气脱硫效率的因素,找出脱硫系统容易出现的故障,提出对脱硫系统日常监督考核的重点,探索建立烟气脱硫系统监督考核方法。