建设项目环评报告书中存在的水环境监测问题及解决方法

项目建设前的环境质量(包括水环境质量)是环境影响评价的基础,预测项目建设后的环境质量是环境可行性评价结论的依据,环境质量的表征数据是通过环境监测工作取得,环境监测的规范性要求,开展监测要得到的数据必须具备"五性",才能表征某一监测地区的环境质量。由于环境评价的中介服务性,以及时间与经费的关系,对环境监测点位、频次进行压缩与省略,使得监测数据无法保障其代表性,影响建设项目环境影响报告书得出可信的结论。如何保障监测数据的质量,以最少的监测点、最恰当的监测时期、最少的监测频次,取得最有代表性的数据表征建设项目周围的环境质量,从而确保评价依靠的环境质量基础可靠,评价结论可信,是一个值得探讨的问题。     

履行职责 开拓创新 全面加强环境监测质量管理工作——在部分省级环境监测站环境监测质量管理座谈会上的讲话

1提高认识,重视环境监测质量管理工作大家都知道,环境监测是环境保护工作的重要基础和技术支撑,是环境管理不可缺少的重要手段.环境监测信息是否准确,分析的结论是否客观,将直接影响到环境决策的正误.而环境监测数据、信息是监测工作最重要的成果,是分析判断环境问题最基本的前提.获取真实有效的监测数据和信息是环境监测的直接目的.数据和信息的有效性包括监测样品的时空代表性(即优化的监测点位和科学的采样频次),实验数据的科学准确性(即有标准规范的分析方法、优良先进的仪器设备、自动便捷的监测手段和现代可靠的高新技术)和监测行为的合法有效性(即监测人员须持证上岗、仪器设备须计量认证、分析结果须经全过程的质量保证和质量控制),因此,提高对环境监测质量管理工作重要性的认识,重视环境监测质量管理工作是各级环保部门做好环境监测工作的前提,要通过你们共同的努力,扎实的工作在监测机构内部营造一种重视环境监测质量管理,重视监测全过程质量保证和质量控制的工作氛围,将环境监测质量管理工作抓紧抓实.2履行职责,充分发挥环境监测质量管理工作的作用十多年来,环境监测技术得到了长足的发展,环境监测管理形式也发生了较大的变化,目前发布的“两项制度”是对19...     

生活污水处理过程中的恶臭气体治理——改进型活性炭吸附法

采用二级生化处理工艺的生活污水处理系统，在一段时间后会产生氨气、硫化氢等有刺激性的气体，对人们的生活和休闲造成一定的影响．在人们使用的各种臭气处理的方法中，一种改进型的活性碳吸附法越来越受到人们的重视，有望推广应用到更多的实际处理过程。     

建立微型大气污染自动监测站的设想

由数个监测子站和一个中心站组成的大气污染自动监测系统对于及时、全面、准确了解一个城市或地区的大气质量状况以及随时掌握系统本身的运行状况具有独特的优越性,有条件的城市和地区建立这样的监测系统无疑是可行的。然而这样完整的监测系统耗资大,一般省会城市建成“一对五”系统耗资都在百万元左右,需要一支经过训炼的多学科的专业技术人员维护管理系统的运行,这对于中小城市和企业的环境监测部门筹建这样的监测系统从财力和技术力量上来说,是具有相当大的困难。     

一种划分水期的简易方法

对于一个地区来说,河流的流量变化是有一定的规律,而不同地区,其枯、丰、平三个水期的月份可能不尽相同.重要的是,实地采样时的那一段时间里河流的流量是否属所处水期的流量范围.有时,会出现这样的情况,即在认为的丰水期内采样,而采样时的河流流量     

对当前城市建设问题的思考

文章在指出当前城市建设中出现问题及其原因的基础上，着重从生态城市的创建、城市特色的塑造、城市景观的设计以及历史遗存的保护等方面作出有益的探讨，以期促进人们对城市可持续发展重要性的认识，推动城市建设的健康发展．     

加入WTO环境监测站面临的机遇和挑战

介绍了加入WTO后我国环境监测面临的形势。指出为适应开放式的环境监测市场的激烈竞争 ,必须加快推进环境监测站的实验室认可工作 ,加强环境监测站的能力建设 ,提高环境监测的现代化水平 ,提升环境监测站的社会形象 ,以环境监测站雄厚的整体实力占领环境监测市场。     

确保监测数据的代表性是保证监测质量的关键

确保监测数据的代表性是保证监测质量的关键王宗仁（平顶山市环境监测中心站４６７０００）环境监测作为环境管理的基础受到国家环境保护主管部门的高度重视，环境监测数据的质量直接关系着环境管理决策的科学性和准确性，“错误的数据比没有数据更可怕”，环境监测数据的...     

新疆建设项目的大气影响评价——一般方法及其特点

建设项目的环境影响评价,我国是从七十年代末开始进行的,我们自治区则是从八十年代初开始的。具有代表性的,是1981年开始进行的乌鲁木齐石油化工总厂大化肥工程的影响评价。从那以后至今,我区内已经做过大小几十个项目的评价工作。其中比较重要的有:泽普石油化工厂的评价,     

地衣样品的采集和保存技术的研究

本文阐述了地衣样品的规范的采集；无污染的采样工具、运输工具、盛装容器及加工器械是保存技术的先行条件。全程序的质控是保存技术的基础，温度、压力、光则是保存技术决定性的因素。通过三种保存技术的研究筛选出了既经济又简便的保存技术     

Assessing health consequences in an environmental impact assessment: The case of Amsterdam Airport Schiphol

In this article a comprehensive approach for the evaluation of possible health effects in an environmental impact assessment (EIA) is described, illustrated with the example of Amsterdam Airport Schiphol. Unlike many EIAs, we estimated quantitatively the impact of aircraft-related pollution in terms of the number of affected people for aircraft noise annoyance, odour annoyance and hypertension. In addition, an analysis of health registry data on cardiovascular and respiratory diseases and a short survey on annoyance and risk perception were carried out. The scope of a health impact assessment depends on the situation, available knowledge and data, concern in the population about the impact and the number of people concerned. It is important to pay attention to the perception of risks and concerns from all parties involved. Moreover, the results demonstrate that far more people outside the area for which standards apply were affected than inside.     

An inquiry into the concept of SEA effectiveness: Towards criteria for Chinese practice

The importance of improving the effectiveness of Plan EIA and SEA-type evaluations in China cannot be overstated: at a time when the country's economy is being boosted by a stimulus package worth over RMB 400 trillion – largely for infrastructure – the pressure on China's already strained environment and resource base is bound to increase. The aim is to propose the criteria for plan EIA's effectiveness to raise the awareness of the need to strengthen the performance of the assessment and maximize its potential benefits. The authors first review critically the discourse on the effectiveness of the impact assessment, identifying three dimensions: substantive, procedural and incremental. The resulting conceptual framework allows them to interpret the weaknesses of the Chinese discourse on the effectiveness and of the practice of the Plan EIA to date. The result is the identification of a clear gap, both in terms of the breadth of the concept, and in terms of the quality of the existing criteria, which tend to be very generic to the point of inapplicability. The analysis also reveals a need for transitioning from formal models of the Plan EIA to more strategic approaches, in a gradual manner that is consistent with context-specificities. The proposal of a set of preliminary criteria for effectiveness is therefore structured on three levels. This framework is meant to input into the ongoing debate on how to improve the practice of PEIA and the SEA-type evaluations in China, and provide ideas for a government strategy aimed at maximizing the positive impact of PEIAs on planning, as well as on the context of application.     

Assessment of Air Quality After the Implementation of Compressed Natural Gas (CNG) as Fuel in Public Transport in Delhi, India

Public transport in Delhi was amended by the Supreme Court of India to use Compressed Natural Gas (CNG) instead of diesel or petrol. After the implementation of CNG since April 2001, Delhi has the highest fraction of CNG-run public vehicles in the world and most of them were introduced within 20 months. In the present study, the concentrations of various criteria air pollutants (SPM, PM₁₀, CO, SO₂ and NO_x) and organic pollutants such as benzene, toluene, xylene (BTX) and polycyclic aromatic hydrocarbons (PAHs) were assessed before and after the implementation of CNG. A decreasing trend was found for PAHs, SO₂ and CO concentrations, while the NO_x level was increased in comparison to those before the implementation of CNG. Further, SPM, PM₁₀, and BTX concentrations showed no significant change after the implementation of CNG. However, the BTX concentration demonstrated a clear relation with the benzene content of gasoline. In addition to the impact of the introduction of CNG the daily variation in PAHs levels was also studied and the PAHs concentrations were observed to be relatively high between 10 pm to 6 am, which gives a proof of a relation with the limited day entry and movement of heavy vehicles in Delhi.     

Monitoring Inter-Annual Variability Reveals Sources of Mercury Contamination in Clear Lake, California

Mercury (Hg) in the aquatic ecosystem of Clear Lake has been documented since the 1970s when fishes were found to have elevated levels of toxic methyl mercury (meHg). Mining practices at the Sulphur Bank Mercury Mine (active intermittently from 1872–1957) along the shoreline of Clear Lake included the bulldozing of waste rock and overburden ore into the shallow nearshore regions of the lake and the creation of steeply sloped piles of waste rock at the water's edge. This process, plus erosion of the waste rock piles, resulted in the accumulation of an estimated 100 metric tons of Hg in Clear Lake. A monitoring program to assess Hg in Clear Lake was established in 1992, and conducted continuously from 1994. Drought conditions in California had persisted for ca. 6 yrs prior to 1992, when the U.S. Environmental Protection Agency (USEPA) remediated the steeply sloped eroding waste rock piles, which appeared to reduce sediment Hg concentrations significantly. In April 1995, a white flocculent material was observed in Clear Lake adjacent to the mine and has been observed every year since, leading to the discovery of ongoing acid mine drainage (AMD), low pH fluids high in Hg and extremely high in sulfate. AMD is now believed to be the most likely cause of elevated meHg in Clear Lake. The discovery of this source of meHg production in Clear Lake, which will significantly influence remedial options, was only made possible by implementation of a diligent monitoring program.     

Agricultural land-use change and ash (<Emphasis Type="Italic">Fraxinus excelsior</Emphasis> L.) colonization in Pyrenean landscapes: an interdisciplinary case study

Changes in agricultural land use are responsible for significant modifications in mountain landscapes. This study is part of an interdisciplinary research on the processes and consequences of spontaneous afforestation of Pyrenean landscapes by ash, and the possibilities for its management. We address the relationships between vegetation dynamics and land-use change from the combination of an agricultural study of change in farm management and an ecological study of grassland colonization by ash. In the framework of a village case study, we characterized parcels management and land-use histories, and analyzed the dynamics of the composition of grassland vegetation communities. From a joint analysis of the results obtained in each discipline, we discuss the limitations and complementarities of the two approaches for the interdisciplinary assessment of the afforestation process.     

Modeling the Hydroclimatic Disturbance of Soil Landscapes in the Southern Canadian Plains: The Problems of Scale and Place

The sensitivity of soil landscapes to climatic variability andhydroclimatic events can be expressed as a landscape change safety factor, the ratio of potential disturbance to resistance to change. The use of a geographic information system (GIS) enables the spatially-explicit modeling of landscape sensitivity, but also raises the risk of violating the characteristic scales of disturbance and resistance, because the GIS technically simplifies the extrapolation of models, and associated concepts, to landscapes and scales notrepresented by the digital data base. Embedding landscape sensitivity into hierarchy theory, the formal analysis of the hierarchical structure of complex systems, provides a conceptual framework for the transfer of models and variablesamong landscape scales. In the subhumid southern Canadian plains, major hydroclimatic events (strong winds, intense rain,rapid snow melt) cause much of the physical disturbance of soillandscapes and terrestrial ecosystems. Prolonged dry or wet weather influences the resistance of soil and vegetation to these events. The potential disturbance of soil landscapes therefore can be derived from the probabilities of extreme events and seasonal conditions, as recorded in instrumental and proxy climate records. This time series analysis can belinked to the modeling of landscape sensitivity by establishingthe probabilities of hydroclimatic events and climatic conditions which may exceed or lower the resistance of individual soil landscapes.     

河北省近岸海域氮磷变化及其影响因素分析

根据2011—2018年河北省近岸海域海水、入海河流、降水中氮和磷的监测数据,分析了海水中氮和磷的变化趋势及其影响因素。结果表明：2011—2018年,河北省近岸海域海水中无机氮（DIN）和无机磷（DIP）的平均浓度均低于第二类海水水质标准,海域富营养化状况以贫营养和轻度富营养为主,超标（第二类海水水质标准限值）点位和中度、重富营养区域主要集中在沧州市近岸海域。河北省近岸海域海水中DIN的平均浓度在2011—2014年、2015—2017年呈现阶段性上升趋势,2018年大幅下降;DIP的平均浓度在2011—2013年无明显波动,2014年陡增后开始逐年下降;N/P在2011—2014年无明显变化,2015—2018年呈逐年上升趋势。自2016年起,入海河流中氨氮和总磷的平均浓度、降水中氨氮的平均浓度均呈逐年下降趋势。近岸海域海水、入海河流、降水中的氮和磷表现出一定的相关性和协同性,陆源污染输入总量降低是海水中氮磷浓度降低的主要原因。应警惕污染物控制力度的不同所导致的海水中生源要素结构的改变,及其引发的潜在海洋生态风险。     

Identification of Residues of Sulfosulfuron and its Metabolites in Subsoil-dissipation Kinetics and Factors Influencing the Stability and Degradation of Residues from Topsoil to Subsoil Under Predominant Cropping Conditions

Long term stability of sulfosulfuron was investigated in subsoil under the natural wheat cropping conditions. Experiments were conducted by applying a commercial formulation of sulfosulfuron on soil at 50 g/ha and 100 g/ha. To understand the factors influencing the persistence of residues two different experiments were conducted. In one experiment wheat crop was cultivated once at the beginning of the two years study period and subsequently the plots were kept undisturbed for the remaining period. In another experiment cultivation of subsequent crops were continued during the study period. In both the cases sulfosulfuron was applied only once at the beginning of the study. Representative soil samples were collected from the depths viz., 0–5, 15, 30, 45, 60 and 90 cm on different pre determined sampling occasions 50, 100, 200, 300, 400, 500 and 600 days after the application of the herbicide. The collected soil samples were analyzed for the residues of sulfosulfuron. Under the influence of continuous cropping conditions residues of sulfosulfuron were found to be relatively low when compared with the soil samples collected from the agriculture plots maintained without any cultivation. The residues detected are in the range 0.001 to 0.017 μg/g. Samples collected from the depth, at 30 to 45 cm showed higher residual concentrations. Soil samples were also showed the presence of break down products. The data has been confirmed by LC–MS/MS. The relation between residue content of sulfosulfuron and the factors contributing the stability of herbicide concentration were also studied.     

A quantitative methodology for indexing environmental sensitivity and pollution potential

A methodology for rating the suitability of sites forthe location of industrial facilities is formulated and appliedto the case of a coal-fired power plant location. The methodologycomprises two major interlinked components: the environmentalplant location indexing component, which involves theidentification, scaling and weighting of environmentalsensitivity factors; and the impact analysis component, whichinvolves the superimposition of the pollution generation impactsof an industrial facility on spatially gridded zones of variousenvironmental sensitivities. For each rectangular areal unitdefined by a square grid, the Unit Pollution Potential Index isdetermined by the severity and distribution of key environmentalsensitivity factors and the coverage of superimposed pollutanteffects as determined by contaminant fate and transport models.For any alternative site of a planned facility, the summation ofthe unit indices over the area of influence of the facilityprovides the quantitative Pollution Index, which can be used as abasis for comparison of alternative sites for planned facilities.For this paper, this methodology is applied to the hypotheticalcase of the siting of a coal-fired power plant in thenortheastern region of the United States, in which threealternative sites are considered. The three sites: A, B and Cyielded indices of 47.83, 47.91 and 47.6, respectively, indicatingthat site C is the most suitable for siting the power plant.     

Topsoil and Housedust Metal Concentrations in the Vicinity of a Lead Battery Manufacturing Plant

The aim of the study was to determine the extent of heavy metal pollution in the vicinity of a lead battery manufacturing plant in the Czech Republic, both in the general environment and within homes. Topsoils (0–5 cm) were sampled from 100 sites along 4 transects which crossed the battery factory, the town centre and outlying rural areas. Housedust samples were collected from 15 plant-workers' homes and 15 non plant-workers' homes located at various distances from the factory. Samples were analysed for levels of Pb, Zn, Cd, Cu, As and Sb, using ICP-AES. Soil concentrations of Pb, Cd, As and Sb peaked at the perimeter fence of the battery factory with Pb levels of up to 12 650 g g> ^-1. Concentrations of these metals decreased exponentially within 500 m of the plant. Whilst the battery factory does appear to be a source of all the metals with the exception of Zn, emissions do not appear to be transported to any great extent over distances of more than 0.5 km. Topsoil and housedust concentrations of Pb, Zn, Cd, Cu, As and Sb in the general Mlada Boleslav area do not appear to be significantly different from those recorded in a large scale survey of urban soils in the United Kingdom. A comparison of housedust Pb concentrations in homes of plant workers and non-plant workers suggests that there may be a small input of Pb into the home environment by battery plant employees.