Resourceful ecological treatment of wastewater in urban ecosystem

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风化铬渣与新鲜铬渣中六价铬溶出特性的研究

采用直接淋浸法对风化铬渣及新鲜铬渣进行了六谷铬溶出的条件试验，60min的浸泡时间，80目以下的粒度对渣水比250g/200mL的新渣中Cr(VI)浸出率达69．4％，渣水比250g/200mL,500g/400mL,750g/600mL的风化渣中Cr(VI)的总溶出率分别为70．2％，86．3％，94．0％，其中第一次淋滤溶出率分别达48．1％，70．0％，81．6％，低PH值的淋浸水有利于Cr(VI)的浸出，在PH值为3时溶出率达高峰，Cr（VI）浸出质量比自然条件（近中性）高出14．1％－16．3％，增大管径和降低装置的滤面负荷可提高浸出效果，在直径80mm管径，500g铬渣装填料，滤面负荷9．95g/cm^2时，Cr（VI）溶出率达98．7％，真空抽滤可提高Cr（VI）浸出速率，但降低了滤液中Cr（VI）的浓度和溶出质量，上述试验结果表明了直接淋浸法回收铬渣中六价铬的可行性，并可作为工业化装置的设计参数。     

总磷快速分析的方法研究

在自然水中 ,总磷是环境监测的重要指标之一。通过对总磷特性的研究 ,应用了紫外光氧化消解分析自然水中总磷成分的快速方法 ,并将该方法结合ADuC812单片机技术开发出了快速分析总磷的装置     

阜蒙县畜禽养殖业污染现状及控制对策

为了了解阜蒙县畜禽养殖业的现状，掌握畜禽养殖业污染特点，对养殖业污染进行了监测，结果表明畜禽养殖造成了对大气和地下水的污染，于是对此提出了控制污染的对策。     

用TDR确定沙壤土非饱和淹灌条件下NH4+的硝化反应及NO3-的入渗迁移

了解污灌土壤微量元素含量空间分布特征是进行土壤环境评价的重要前提。应用地统计学技术对北京东郊污灌区典型地块８种微量元素含量和土壤理化参数进行了空间结构分析。     

日本土壤环境质量标准的制定

介绍了日本土壤污染现状，土壤环境标准的制定及其规定的制样方法，并进一步探讨了我国土壤环境质量标准制定中需注意的几个问题。     

Current status of applying microwave-associated catalysis for the degradation of organics in aqueous phase – A review

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治理酸雾的环保措施

润滑油酸碱精制装置产生酸渣，装车时酸雾大量地散发到空气中，对环境的污染很严重；通过采取密闭装车环保治理措施，从而有效解决酸雾对环境的污染问题。     

Longitudinal analysis of bioaccumulative contaminants in freshwater fishes

The National Contaminant Biomonitoring Program (NCBP) was initiated in 1967 as a component of the National Pesticide Monitoring program. It consists of periodic collection of freshwater fish and other samples and the analysis of the concentrations of persistent environmental contaminants in these samples. For the analysis, the common approach has been to apply the mixed two-way ANOVA model to combined data. A main disadvantage of this method is that it cannot give a detailed temporal trend of the concentrations since the data are grouped. In this paper, we present an alternative approach that performs a longitudinal analysis of the information using random effects models. In the new approach, no grouping is needed and the data are treated as samples from continuous stochastic processes, which seems more appropriate than ANOVA for the problem.     

Climatic Controls on Watershed Reference Evapotranspiration Varied during 1961–2012 in Southern China

Reference evapotranspiration (ET_o) is an important hydrometeorological term widely used in understanding and projecting the hydrological effects of future climate and land use change. We conducted a case study in the Qinhuai River Basin that is dominated by a humid subtropical climate and mixed land uses in southern China. Long‐term (1961–2012) meteorological data were used to estimate ET_o by the FAO‐56 Penman–Monteith model. The individual contribution from each meteorological variable to the trend of ET_o was quantified. We found basin‐wide annual ET_o decreased significantly (p < 0.05) by 3.82 mm/yr during 1961–1987, due to decreased wind speed, solar radiation, vapor pressure deficit (VPD), and increased relative humidity (RH). However, due to the increased VPD and decreased RH, the ET_o increased significantly (p < 0.05) in spring, autumn, and annually at a rate of 2.55, 0.56, and 3.16 mm/yr during 1988–2012, respectively. The aerodynamic term was a dominant factor controlling ET_o variation in both two periods. We concluded the key climatic controls on ET_o have shifted as a result of global climate change during 1961–2012. The atmospheric demand, instead of air temperature alone, was a major control on ET_o. Models for accurately predicting ET_o and hydrological change under a changing climate must include VPD in the study region. The shifts of climatic control on the hydrological cycles should be considered in future water resource management in humid regions.