生物沥浸法去除猪粪中重金属的研究

探讨以猪粪为培养介质,驯化和加富培养获得硫细菌混合菌液,并研究其对猪粪中重金属的生物沥浸效果。结果表明：猪粪可以在18 d内完成驯化,经3轮富集培养的猪粪粪液可作为硫细菌接种菌液。采用此菌液对猪粪粪液接种并投加硫粉,经过9 d的生物沥浸,Cu、Zn和Cd的沥出率分别达到93.0%、90.1%和67.8%。     

Effects of metal pollution on earthworm communities in a contaminated floodplain area: Linking biomarker, community and functional responses

Effects on earthworms in the contaminated floodplain area the Biesbosch, the Netherlands, were determined at different levels of organization using a combination of field and laboratory tests. The species Lumbricus rubellus, collected from different polluted sites in the Biesbosch, showed reduced values for the biomarker neutral red retention time (NRRT), mainly explained by high metal concentrations in the soil and the resulting high internal copper concentrations in the earthworms. Organic pollutant levels in earthworms were low and did not explain reduced NRRTs. Earthworm abundance and biomass were not correlated with pollutant levels in the soil. Litterbag decomposition and bait-lamina feeding activity, measures of the functional role of earthworms, were not affected by metal pollution and did not show any correlation with metal concentrations in soil or earthworms nor with NRRT. Effects at the biochemical level therefore did not result in a reduced functioning of earthworm communities.     

工业贮池防腐材料及其施工性能

总结了常用的工业贮池防腐蚀处理方法、防腐蚀材料的性能及施工过程和要点,比较了玻璃钢衬里、玻璃鳞片与乙烯基酯树脂混合衬里和耐酸块材砌筑等防腐蚀处理工艺的工艺条件,并介绍了玻璃钢衬里工艺中所用树脂的类型及性能.     

湿式吸收法同时烟气脱硫脱氮技术进展

同时烟气脱硫脱氮技术是燃煤烟气SO2和NOx污染控制的发展趋势和研究热点。系统地介绍了氧化吸收法、络合吸收法等能实现同时脱硫脱氮的吸收法烟气净化技术，分析了其特点和存在的问题，并从技术集成、副产物利用、与现有脱硫装置的配套和理论研究等方面提出了其研究方向。     

普光高含硫气田水中H2S去除技术研究

文章探讨了通常用于水中H2S去除的方法,对比方法的优缺点,提出以NaClO为主要脱硫剂的处理方法。通过对采出水的脱硫氧化剂优选试验、NaClO连续脱硫试验,并将试验研究结果应用于普光高含硫气田水脱硫处理。试验证明:采用NaClO可以安全、高效地去除采出水中的H2S,处理后的气田水中硫化物的含量小于1mg/L。     

炼油厂二硫醚恶臭污染物的监测

建立了气相色谱-质谱法(GC-MS)及硫化学发光检测气相色谱法(GC - SCD)定性和定量测定炼油厂二硫醚类恶臭污染物二甲二硫、乙基甲基二硫醚和二乙基二硫醚的方法.当进样体积为0.1mL时,GC - SCD法的二硫醚最低检出限为0.1～0.2 mg/m3,二甲二硫和乙基甲基二硫醚的RSD不超过2.4％(n=5),二甲...     

用燃烧氧化-库仑电极法测定煤质全硫

阐述了三德SDSM-Ⅳ智能定硫仪测定煤中全硫的原理,建立了煤质中含硫量的测定方法,并对标准样品和实际样品进行了测定,结果表明:对三种浓度含硫煤样进行7次平行测定,相对标准偏差RSD≤2.4%,方法的精密度较好;测定含硫量为0.52%的标准煤样相对误差为0.4%,测定含硫量为2.74%的标准煤样相对误差为0.7%,准确度符合要求。结合工作中经验,为今后运用此方法进行测定提供了借鉴和依据。     

湖库富营养化敏感分级水动力概率参数研究

鉴于按多年平均流量估计滞留时间进行富营养化敏感程度分类较为粗糙,在月平均尺度上,考虑径流量的概率分布,提出了滞留率、缓流率、倒灌保证率等新的水动力概率参数反映水体动力特征,使水体富营养化敏感程度的识别及分级建立在考虑年内变化及多年变化的基础之上,使之在敏感分级上有更高的分辨率.并以三峡水库为实例,进行了不同支流的水体水动力概率参数的计算.结果显示,不同支流水体间的敏感水动力概率参数有明显差别,依据水动力条件等因素对水体富营养化控制实施差别化管理是必要的.      

Effect of unburned carbon content in fly ash on the retention of 12 elements out of coal-combustion flue gas

The aim of this study was to evaluate whether unburned carbon particles present in fly ash can help in the retention of S, Cl, Br, As, Se, Cu, Ni, Zn, Ga, Ge, Rb, and Pb out of flue gas during the coal combustion at fluidised-bed power station where the coal was combusted along with limestone. The competitive influence of 10%-25% CaO in fly ashes on the distribution of studied elements was studied as well to be clear which factor governs behaviour of studied elements. Except of S (with significant association with CaO) and Rb and Pb (with major affinity to Al₂O₃) the statistically significant and positive correlation coefficients were calculated for the relations between unburned carbon content and Br (0.959), Cl (0.957), Cu (0.916), Se (0.898), Ni (0.866), As (0.861), Zn (0.742), Ge (0.717), and Ga (0.588) content. The results suggest that the unburned carbon is promising material in terms of flue gas cleaning even if contained in highly calcareous fly ashes.