从内审策划准备入手提高内审质量

企业建立HSE管理体系并通过认证后,只能表明所建立的体系满足了HSE体系标准的基本要求.实践证明,在体系运行中,还是会出现这样或那样的问题,如果没有一个不断发现问题、解决问题并不断完善和改进的机制,就会使HSE管理体系运行困难,最终导致HSE管理体系名存实亡.     

Mobilities and leachabilities of heavy metals in sludge with humus soil

Chemical forms of Zn, Ni, Cu, and Pb in municipal sewage sludge were investigated by adding humus soil to sludge and by performing sequential extraction procedures. In the final sludge mixtures, Zn and Ni were mainly found in Fe/Mn oxide-bound (F3) and organic matter/sulfide-bound (F4) forms. For Zn, exchangeable (F1), carbonate-bound (F2), and F3 forms were transformed to F4 and residual forms (F5). For Ni, F1 and F2 forms were transformed to F1, F2, and F3 forms. Both Cu and Pb were strongly associated with the stable forms F4 and F5. For Cu, F2 and F3 forms were major contributors, while for Pb, F3 and F4 forms were major contributors to F5. Humus soil dosage and pH conditions in the sludge were strongly correlated with the forms of heavy metals. Five forms were used to evaluate metal mobilities in the initial and final sludge mixtures. The mobilities of the four heavy metals studied decreased after 28 days. The metal mobilities in the final sludge mixtures were ranked in the following order: Ni > Zn > Cu = Pb. Leaching tests showed that the mobilities of Zn and Ni in lower pH conditions (pH 4) were higher than those in higher pH conditions (pH 8).     

Decolorization of dye solutions with Ruditapes philippinarum conglutination mud and the isolated bacteria

Application of Ruditapes Philippinarum conglutination mud (RPM) for decolorizing synthetic dye solutions was studied. RPM showed good activity for decolorization of Methylene Blue, Crystal Violet, Malachite Green, and Ink Blue. The amount of the RPM had great effect on the decoloration rate of the dye solutions. However, the decoloration rate did not continue to increase when the amount of mud exceeded the optimum dose. The temperature of the dye solution had a remarkable effect on the decolorization rate of Ink Blue solution, but had little effect on the other three dye solutions. The initial pH of the dye solutions evidently affected the decolorization rate of Malachite Green solution, but had less effect on the other three. The decolorization rate of the dye solutions increased significantly with treatment time within 8 hr, but tended to be steady after 8 hr for Methylene Blue, Crystal Violet and Malachite Green solutions, and after 12 hr for Ink Blue solution. The decolorization efficiencies for the four dye solutions under the optimum conditions were all above 90%. Seventeen strains screened from RPM showed flocculation ability for kaolin clay suspension. Out of them, the flocculation rate of strain ZHT3-9 and strain ZHT4-13 were up to 88.14% and 86.01%, respectively. ZHT3-9 was studied, and its decolorization rate for Methylene Blue, Crystal Violet, and Malachite Green reached 90.02%, 89.21%, and 80.29%, respectively. By morphological, physiological and biochemical characteristics analysis and 16S rRNA sequencing, the strain ZHT3-9 was identified as Arthrobacter sp.     

常温下短程硝化实现及稳定性试验研究

以自配模拟氨氮废水为研究对象,在全程硝化污泥的基础上通过控制低曝气量和提高反应器进水pH值,在较低的DO质量浓度和较高pH值条件下完成了短程硝化污泥的驯化,系统中的NO2--N积累率稳定在95%以上;逐渐提高硝化阶段的曝气量、降低进水溶液的pH值,短程硝化过程没有被破坏;稳定的短程硝化系统改为定时控制,过度曝气6 d后,NO2--N的积累率仅剩43.7%,硝化类型由短程硝化转变为全程硝化。     

絮凝-SBR-Fenton氧化处理酶制剂废水的研究

以某酶制品厂的废水为研究对象,确定了絮凝-SBR-Fenton高级氧化的试验方法.结果表明,在絮凝阶段,当聚合氯化铝(PAC)投加量为0.6g/L,搅拌6 min,絮凝70min的条件下,预处理的出水CODCr效果最好,去除率为44.6%;再经过SBR工艺处理,停留时间为14 h时,CODCr去除率达到了89.2%;之后再进行Fenton高级氧化,氧化的最佳条件是:ρ(FeSO4·7H2O)为3 g/L,ρ(H2O2)为0.8g/L,反应时间2 h.最终出水达到了GB 8978-1996<污水综合排放标准>中二级排放标准.     

三丁基锡生殖毒性的研究进展

有机锡化合物,特别是三丁基锡,广泛存在于环境中,对生物体以及生态环境存在着潜在的威胁。本文综述了三丁基锡对软体动物、鱼类和哺乳动物生殖机能的影响及其其可能的作用机制,指出了进一步的研究方向。     

PAS-PDMDAAC复合混凝剂研究

以Al2（SO）4和PDMDAAC为原料进行了无机-有机复合絮凝剂的复合实验研制,确定其制备工艺条件,并对油田现场采集的钻井废水作絮凝沉降实验,所研制的PAS-PDMDAAC复合絮凝剂对COD的去除效率可大大提高.     

南京市氮氧化物排放行业分布特征及减排对策

采用污染源普查资料与实地调查相结合的方法,对南京市各行业氮氧化物(NOx)排放源及排放量进行调查和梳理。结果表明:各行业NO x排放分担率依次为电力41%、机动车25%、钢铁10%、水泥9%、石化7%、其它工业5%、居民生活3%。针对南京市现状,对重点排放源提出了NO x减排措施与对策。     

饮用水源地的水华对人体健康风险评价

饮用水源地的水华现象近年来在世界各地不断爆发,给人类饮水安全造成极大的威胁。本文通过检测微囊藻毒素和三卤甲烷类物质,利用急性暴露安全阈值（浓度）计算模型,计算出了各自的急性暴露安全阅值,并对健康风险进行了评价。     

地球化学定量预测法在武夷成矿带铜资源潜力评价中的应用

利用地球化学定量预测理论方法技术,建立了武夷成矿带紫金山铜金矿等7个典型矿床的地质-地球化学找矿模型,圈定了54处AB级预测区,并利用地球化学定量预测法分别估算了每类预测区的铜资源量,为科学评估武夷成矿带的铜矿资源潜力和该成矿带地质矿产勘察工作部署提供地球化学依据。