高温分解及烟气净化处理电子垃圾的技术和设备

提出高温分解及烟气净化处理废弃电子垃圾的技术。通过喷水系统调节分解炉内气氛,控制有机物分解速度,使有机物裂解成二氧化碳和水蒸气,有害成份经净化系统再次处理后达到环保排放标准。金属部分可进一步进行提炼回收,实现有机物和金属的绿色分离。     

Comprehensive evaluation of spent mushroom substrate-chicken manure co-composting by garden waste improvement: physicochemical properties,humification process,and the spectral characteristics of dissolved organic matter

Environmental Science and Pollution Research - The performance of garden waste on spent mushroom substrate (SMS) and chicken manure (CM) co-composting efficiency and humification is unclear....     

Effects of salinity on soil bacterial and archaeal community in estuarine wetlands and its implications for carbon sequestration: verification in the Yellow River Delta

Soils from two typical tidal salt marshes with varied salinity in the Yellow River Delta wetland were analysed to determine possible effects of salinity on soil carbon sequestration through changes in soil microbiology. The mean soil respiration (SR) of the salt water–fresh water mixing zone (MZ) was 2.89 times higher than that of the coastal zone (CZ) (4.73 and 1.63?μmol?m^?2?s^?1, respectively, p?Pseudomonas sp. and Limnobacter sp. that might have led to its higher dehydrogenase activity and respiratory rates. Additionally, the CZ possessed more Halobacteria and Thaumarchaeota with the ability to fix CO₂ than the MZ. Significantly lower soil salinity in MZ (4.25?g?kg^?1) was suitable for β-Proteobacteria, but detrimental for Halobacteria compared with CZ (7.09?g?kg^?1, p?相似文献   

Characteristics of the stabilized/solidified municipal solid wastes incineration fly ash and the leaching behavior of Cr and Pb

Fly ash is a hazardous byproduct of municipal solid wastes incineration (MSWI). An alkali activated blast furnace slag-based cementitious material was used to stabilize/solidify the fly ash at experimental level. The characteristics of the stabilized/solidified fly ash, including metal leachability, mineralogical characteristics and the distributions of metals in matrices, were tested by toxic characteristic leaching procedure (TCLP), X-ray diffraction (XRD) and scanning electron microscopy-energy dispersive spectrometer (SEM-EDS) respectively. Continuous acid extraction was utilized to extract metal ions and characterize their leaching behavior. The stabilization/solidification procedure for MSWI fly ash demonstrates a strong fixing capacity for the metals by the formation of C-S-H phase, hydrated calcium aluminosilicate and ettringite. The stabilized/solidified fly ash shows a dense and homogeneous microstructure. Cr is mainly solidified in hydrated calcium aluminosilicate, C-S-H and ettringite phase through physical encapsulation, precipitation, adsorption or substitution mechanisms, and Pb is mainly solidified in C-S-H phase and absorbed in the Si-O structure.     

大跨度暗挖地铁车站台阶法施工沉降特点研究

以青岛某地铁车站工程为背景,针对大跨度地铁车站主体隧道台阶法施工,利用M IDAS／GTS仿真数值模拟软件对不同台阶数量的开挖方案进行模拟研究,并结合工程现场监测数据,经过对比分析得出基于坚硬岩石地层条件下大跨度地铁车站台阶法施工沉降特点,从地表沉降控制的角度提出合理的台阶数量,为类似工程的开挖方案设计与施工沉降控制提供参考依据。     

MiRNA-451 is a potential biomarker for estrogenicity in mouse uterus

The uterotrophic assay has been commonly used to test environmental estrogens in vivo, however, it is often not sensitive enough sometimes. An alternative way is to evaluate estrogenicity through biomarker genes. MicroRNA （miRNA） is a class of regulatory gene, which has been shown to be a good biomarker for many diseases and toxicological effects in recent years, and some evidences showed that estrogen induced response was partially mediated by miRNAs. In this study, two types of microarrays were used to test the 17[3-estradiol （E2） induced miRNA expression profile at different time points in the immature mouse uterus. Statistical analysis showed the aldehyde slide based array had less variation than the amino slide based array, and 11 dysregulated miRNAs were screened out for significant fold change. Real-time PCR was performed to further confirm that 4 out of 7 selected miRNAs, namely miR-451, miR-155, miR-335- 5p, and miR-365, are E2 regulated miRNAs in the uterus. The function of the predicted targets of these miRNAs is involved in cell grow control, which is consistent with the main E2 function in the uterus. MiR-451 had similar strong responses to E2 in the uterus of both immature and overiectomized mice, and could be a potential biomarker for estrogenicity in the uterus.     

大气环境质量灰色聚类关联分析法的应用研究

在讨论大气环境质量灰色聚类关联评价法的基础上,通过应用实例和与灰色聚类法及灰色关联法的比较分析,验证了这种评价法的合理性和可靠性。     

紫外消毒在城市污水处理中的研究进展

介绍城市污水消毒的必要性,对常用污水消毒技术进行现状分析及技术经济比较,紫外线消毒有望成为替代传统液氯消毒的较佳选择.阐述紫外线消毒原理及工程上的应用.最后对紫外消毒技术进行总结.     

聚合氯化铝铁在纺织印染废水处理中的应用

主要探讨聚合氯化铝铁（PAFC）在纺织印染废水处理的应用,并对影响絮凝效果的主要因素,如投加量、pH值等进行研究,找出最佳反应条件.     

Project tocoen. The fate of selected organic pollutants in the environment—iv. soil,earthworms and vegetation 1988

The samples of soils, earthworms and vegetation (needles, lichens, mosses) were collected for the realization of Project TOCOEN (Toxic Organic Compounds in the ENvironment). The samples were collected from three TOCOEN model areas in Czechoslovakia—one city and two rural areas. The samples were analyzed for polycyclic aromatic hydrocarbons (PAHs), chlorinated pesticides (C1‐PEST) and polychlorinated biphenyls (PCBs).