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1.
广州生活垃圾处理的思路与对策   总被引:3,自引:0,他引:3       下载免费PDF全文
简述了广州生活垃圾生成与处理的现状。指出了广州生活垃圾处理存在的主要问题,对广州市未来10 a—15 a生活垃圾产生量进行了预测。在对生活垃圾填埋和焚烧处理成本进行比较的基础上,提出了广州生活垃圾处理的行动内容。  相似文献
2.
The Kaduna river in Nigeria is in such great environmental stress that the self-purifying capacity of the river has been exceeded as a result of industrial discharges. The river water is blue-green and pollution build-up is evident on the river banks. Techniques were designed to rid the river of visible signs of pollution by incorporating the principles of adsorption and incineration.Semi-activated carbon from agricultural wastes were used to treat the waste water. Residual colors, amber, yellow and orange, were obtained and the solute removed ranged from 96-99.8% and the volatile residue removed by carbon treatment ranged from 3-3.8%. Incineration of 1 kg waste water yielded 40 g solid residue.Adsorption of dyestuff present in the waste water was linear and increased with concentrations of waste water per unit mass of guinea corn carbon. Replicate results yielded: y = 2.5 + 0.130x y = 2.306 + 0.017x where x =log10% concentration of dyestuff waste water (independent variable); y = log10 adsorption of dyestuff waste-weight gramme-1 carbon. Unit of weight = milligramme (dependent variable).For maize carbon, adsorption was linear but decreased with increasing concentrations. Replicate results were: y = 1.583 - 0.21x y = 0.52 - 0.32x x and y here are the same as above; with cane sugar carbon, adsorption was independent of concentrations. Student t-test showed no statistical difference between the replicates at the 99.5% level.  相似文献
3.
垃圾焚烧飞灰中二噁英类的研究概况   总被引:1,自引:0,他引:1  
随着垃圾焚烧技术的推广应用,焚烧产生的污染越来越受关注,本文介绍了二噁英的检测方法、垃圾焚烧飞灰中二噁英的分布、影响因素及飞灰的处置和综合利用技术研究概况。  相似文献
4.
危险废物焚烧处置项目竣工环境保护验收监测要点   总被引:1,自引:0,他引:1  
对危险废物焚烧处置项目竣工环境保护验收监测中尚需明确的要点进行了剖析,并从入炉危废种类及比例、焚烧量的控制、助燃剂加入量、空气过剩系统的把握,以及安全管理检查要点等方面,提出相应的解决办法。  相似文献
5.
The increasing volumes of municipal solid waste produced worldwide are encouraging the development of processes to reduce the environmental impact of this waste stream. Combustion technology can facilitate volume reduction of up to 90%, with the inorganic contaminants being captured in furnace bottom ash, and fly ash/APC residues. The disposal or reuse of these residues is however governed by the potential release of constituent contaminants into the environment. Accelerated carbonation has been shown to have a potential for improving the chemical stability and leaching behaviour of both bottom ash and fly ash/APC residues. However, the efficacy of carbonation depends on whether the method of gas application is direct or indirect. Also important are the mineralogy, chemistry and physical properties of the fresh ash, the carbonation reaction conditions such as temperature, contact time, CO2 partial pressure and relative humidity. This paper reviews the main issues pertaining to the application of accelerated carbonation to municipal waste combustion residues to elucidate the potential benefits on the stabilization of such residues and for reducing CO2 emissions. In particular, the modification of ash properties that occur upon carbonation and the CO2 sequestration potential possible under different conditions are discussed. Although accelerated carbonation is a developing technology, it could be introduced in new incinerator facilities as a “finishing step” for both ash treatment and reduction of CO2 emissions.  相似文献
6.
This paper proposes a mathematical model for life-cycle inventory analysis (LCI) of waste incineration in Switzerland. In order to model conventional and new incineration technologies adequately, fundamental aspects of the different technologies relevant for the LCI are discussed. The environmental impact of these technologies strongly depends on the assessment of the long-term emissions of the solid incineration residues and is therefore related to value based decisions about the time horizon considered. The article illustrates that the choice of the landfill model has a significant influence on the results of life-cycle assessment of waste incineration.  相似文献
7.
In 1996 and 1997, the levels of polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) were determined in soil and herbage samples taken from 24 sites in the vicinity of an old municipal solid waste incinerator (Montcada, Barcelona, Spain). To determine the temporal variation in the concentrations of PCDD/Fs, recently 24 soiland 24 herbage samples were again collected at the same sampling points and analyzed for PCDD/F levels. In the currentsurvey, PCDD/F concentrations in soils ranged between 0.06 and127 ng I-TEQ kg-1 (dry matter), with median and mean values of 4.80 and 9.95 ng I-TEQ kg-1 (dry matter), respectively. In turn, the levels of PCDD/Fs in herbage samples ranged from 0.40 to 1.94 ng I-TEQ kg-1 (dry matter), with median and mean values of 0.86 and 0.95 ng I-TEQ kg-1 (dry matter), respectively. The comparison with the data obtained in 1996 and 1997 show that while PCDD/F concentrations in herbage samples decreased substantially during the last two years, no significant differences in the levels of PCDD/Fs in soils were noted. On the other hand, the potential intake of polluted soils from the vicinity of the plant would not imply any significant health risk for the general population living in the area under influence of the facility.  相似文献
8.
The epiphytic lichen Parmelia caperata was usedas biomonitor in the area of a municipal solid wasteincinerator (Poggibonsi, central Italy) to investigatethe levels and the spatial distribution of the heavymetals Al, Cd, Cr, Cu, Fe, Hg, Pb and Zn. Levels ofAl, Cu and Hg were similar to those in unpollutedareas, whereas high values were found for Cr, Zn andespecially Cd. The distribution pattern of the lastthree metals and the exponential relationship of theirconcentrations with distance from the incinerator,showed that the disposal plant is a local source ofatmospheric pollution due to Cd, Cr and Zn. For thesemetals, long-term hazard should be seriously taken into account.  相似文献
9.
The emission of the dioxin-like compounds from on-site waste incinerators of seven schools in Kyonggi Province of Korea was evaluated by determination of the cytochrome P4501A(CYP1A) catalytic activity and antiestrogenic activity using cell culturemicrobioassay. The residue samples were extracted in a Soxhlet apparatus using toluene for 20 hr. The concentrated crude extractswere fractionated with a basic alumina column. Dioxin-like compounds were then extracted. Induction of CYP1A activity in a rat(H4IIE) hepatoma cell line was used as indicator of biologicaleffect of incinerator residues and measured as 7-ethoxyresorufin-O-deethylase(EROD) activities. The EROD activities of fraction II extracts (one of the two extracts) in the H4IIE cells were from 0.044±0.002 to 4.424±0.351 ng-TEQ g-1 (TCDD Toxicity equivalent), showing relatively high inducing capacity. Antisetrogenicity of the extracts was measured as decrease in E2-induced cell proliferation. Most of the extracts showed antiestrogenic activity in MCF7-BUS cell.The TEQ levels of the incinerator residues and the antiestrogenicactivities were in good correlation, strongly suggesting that thepotent toxic emissions were indeed produced from the on-site school waste semi-incinerators and could cause the antiestrogenicity.  相似文献
10.
选择四种规模不同的炉排型生活垃圾焚烧炉,分别对其排放烟气中的二  相似文献
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