井下地脉动测试方法及工程意义

井下地脉动测试是一种新型的原位测试手段,本文简介了这种测试方法的要点,并对测试数据的工程价值与应用方法进行了讨论。     

国内外有机废液的焚烧处理技术

介绍了国内外高浓度有机废液的焚烧处理装置,即液体喷射焚烧炉,回转窑焚烧炉,泡流化床焚烧炉和循环流化床焚烧炉,阐述了各种焚烧炉的工作特点,通过比较出,鼓泡流化床和循环流化床焚烧炉在环保方面具有突出的优点。     

Comprehensive evaluation of heavy metal contamination of sediment in Lake Dianchi by using modified AHP method and 137Cs dating

Through the use of general sampling and measurement by ¹³⁷ Cs dating, problems regarding the absence of monitoring data can easily be resolved. Further, weighted values need to be determined while Environment Quality Comprehensive Index (EQCI) is commonly used as applied in environmental quality comprehensive evaluation. In order to overcome the subjectivity in determining weights, the modified Analytical Hierarchy Process (AHP) method was designed. The modified AHP method involved the following key procedures: First, the parameters y _i1 and y _i2 were calculated based on the monitoring data; second, the factors were put in order according to the symbol and value of y _i1 and y _i2; third, the continuous odd integers, which represented the importance of factors, were given to factors according to their seating order; and, fourth, the factor weights were determined from the pair-wise comparison matrix calculated by the ratio of the given odd integers. Therefore, the weights were completely based on the monitoring data. In the present study, the comprehensive quality of sediments in five sections of Lake Dianchi were evaluated and the results indicated that the current contamination of sediments in each lake section is much more serious than at any other time in history. __________ Translated from Environmental Science, 2006, 27(8): 1531–1536 [译自: 环境科学]     

In vitro EROD induction equivalency factors for the 10 PAHs generally monitored in risk assessment studies in The Netherlands

The ethoxy resorufin dealkylase (EROD) inducing potency of 10 polycyclic aromatic hydrocarbons (PAHs) is measured in the H4IIE in vitro bioassay and the results are compared to those reported in literature. The selected PAHs varied considerably in their potency to induce EROD activity. Anthracene (Ant) and phenanthrene (Phe) showed consistently no response. Naphthalene (Nap) showed no or a very weak response on EROD activity. Fluoranthene (Fla) and benzo[g,h,i]perylene (BghiP) showed weak responses at the highest doses. The other PAHs, including indeno[1,2,3-cd]pyrene (IP), benz[a]anthracene (BaA), benzo[a]pyrene (BaP), chrysene (Chr) and benzo[k]fluoranthene (BkF), showed full bell shaped dose-response curves. BaP EROD induction equivalency factors (BaP-1EF) were calculated and increased in the order Ant approximately Phe < Fla < Nap < BghiP < IP < BaA < BaP < Chr < BkF. Comparison of BaP-IEFs based on 50% effect concentration (EC50) or lowest effect concentration (LEC), yielded a significant relationship between both methods described by the equation log(BaPIEF(EC50) = 0.55 x log(BaPIEF(LEC)) + 0.07 (r2 = 0.913). BaP-IEFs as derived from our measurements and as reported in literature and measured in other in vitro assays deviated up to a factor of 17 among the different studies, but the potency rankings were comparable. For the PAH mixture as on average present in the human diet an overall tetrachlorodibenzo-p-dioxin (TCDD)-IEF of 1 x 10(-4) was estimated. The total PAH based TCDD induction equivalents (IEQ) intake then was calculated 300 pg/day, which is approximately 2 times higher then the PHAH based TCDD-EQ intake reported for humans.     

塑料多孔球形填料应用于石化废水处理的研究

着重阐述了废水生物处理工艺中现有填料的应用情况，并通过对试验数据的分析，阐明资料多孔球形填料应用于石化废水处理的技术可行性。     

The enhanced PC and PEC oxidation of formic acid in aqueous solution using a Cu-TiO2/ITO film

The photocatalytic (PC) and photoelectrocatalytic (PEC) activity of Cu-TiO2/ITO films for degrading formic acid in aqueous solution was investigated in this study. Compared with a TiO2/ITO film, the degradation efficiency of formic acid on the Cu-TiO2 films increased markedly in both the PC and PEC oxidation processes. However, it was found that the photodeposited Cu metal on the Cu-TiO2 films could electrochemically dissolute during the PEC reaction, while an electrical bias with the voltage higher than 1.48 V was applied. It is believed this is a common problem occurred for several metals deposition on the TiO2 films, which results in a poor stability of the metal-deposited TiO2 electrode in PEC processes. To improve the stability of the Cu-TiO2 electrode, an alternative process between PC and PEC reactions was investigated. It was found that the dissolute Cu metal during the PEC process was re-deposited on the Cu-TiO2 film again during the PC process. The experiments with repeated runs demonstrated that this alternative process could not only overcome the loss of Cu, but also enhance the PEC oxidation efficiency of the Cu-TiO2 films.     

城市生活垃圾焚烧过程中二次污染物的生成与控制

在我国 ,采用焚烧法处理城市固体垃圾 ,逐渐得到推广和应用。然而焚烧带来的二次污染物 ,如二、细颗粒、重金属、HCl以及SOx、NOx 等也随之引起了广泛关注。对垃圾焚烧过程中各种二次污染物的产生机理及其控制方法进行了综述。并且指出近期我国城市固体垃圾焚烧烟气污染物的重点控制对象应为颗粒物、HCl、SOx 和NOx。     

Studies of the effect of simulated acid rain on the ecological equilibrium of the soil system

Introduction to the problem of environmental pollution caused by acid depositions. Presentation of principles of the six-year field experiment with simulated acid rain. Short characteristics of particular parts of the series of papers.     

浅谈铁路环境监测的质量保证

本文讨论了铁路环境监测工作中的布点、采样、测试分析和数据处理等各个环节的质量保证 ,以提高环境监测工作的质量管理水平     

土木建筑施工班组安全生产管理模式创新

在分析我国安全生产监督管理机制和土木建筑施工项目安全生产管理模式基础上,结合土木建筑行业安全生产过程特点,指出土木建筑行业必须发挥班组的重要作用。借鉴煤炭、电力等行业平安班组建设经验,建议了以联保、互保制度为核心的土木建筑施工作业班组模式。实践表明,尽管土木建筑施工班组稳定性差,但平安班组建设促进了班组人员安全意识的提高,班组人员发现、排解安全风险能力增强,促进了工程建设安全生产。