环保

生态住宅环保行业标准实施;河南省提高垃圾无害化处理率;垃圾处理市场迎来黄金时代;天津市启用生态型垃圾转运站;福建：加快推进城市污水垃圾处理产业化     

上海市第二轮"环保三年行动计划"启动确定六个主要目标和任务

●水环境治理 :完成苏州河环境综合整治二期工程 ,中心城区河道基本消除黑臭 ,郊区主要河道水质恶化趋势得到遏制 ,全市污水集中处理率提高 70 %以上●大气环境治理 :全面实施天然气等清洁能源替代 ,严格控制和治理机动车尾气和扬尘污染 ,2 0 0 5年空气质量指数二级和优于二级的天数占全年比例达到 85 % - 90 %●固体废物处置与利用 :贯测“减量化、资源化、无害化”原则 ,中心城区实现生活垃圾分类收集 ,郊区基本形成生活垃圾收集系统。●绿化建设 :建成国家园林城市 ,基本形成“环、楔、廊、园、林”相结合的绿化系统 ,城市绿化覆盖率达到…     

兴平市污水回用可行性分析

城市污水回用指的是,生活和工业污水经过处理后,作为工业,农业或市政用水的水源。城市污水中含有污染物质的水量仅占整个污水量的0．1％,而且城市污水就近可得。水量稳定、易于收集,污水处理技术也比较成熟,将城市污水经常规处理后回用于工业是完全可行的。由兴平市目前的水资源和水环境基本情况可以看出j兴平市地下水超采已经非常严重,市区范围内已经出现了地下漏斗区,而城市大量的污水基本还未被利用,在对城市用水各个部门污水回用优点分析及水质要求的基础上,提出将污水分别回用于工业、农业灌溉、市政杂用、地下水人工回灌、中水回用等的方案。     

最新拟建工程项目信息

白沙污水处理厂项目所属地区:广西所属行业:环保水务项目性质:新建项目简介:柳州市将利用世行贷款建成4座新的污水处理厂及相应配套的污水收集系统,工程建设完成后,柳州市将形成日处理污水59.5万吨的能力,全市污水处理率达到65%。所需关键设备:过滤池、沉淀池、泵、管道、格栅、刮泥机、浓缩机、曝气机等所需施工专业:环保工程、管道工程、自动化、防腐保温、安装等投资总额:1.83亿元建设年限:2004年-2005年进展阶段:规划设计阶段业主单位:柳州市城投公司电话:0772-2830681/2830683大辛垃圾场垃圾发电项目所属地区:辽宁所属行业:环保水务项…     

最新拟建工程项目信息

白沙污水处理厂项目所属地区:广西所属行业:环保水务项目性质:新建项目简介:柳州市将利用世行贷款建成4座新的污水处理厂及相应配套的污水收集系统,工程建设完成后,柳州市将形成日处理污水59.5万吨的能力,全市污水处理率达到65%。 所需关键设备:过滤池、沉淀池、泵、管道、格栅、刮泥机、浓缩机、曝气机等所需施工专业:环保工程、管道工程、自动化、防腐保温、安装等投资总额:1.83亿元建设年限:2004年-2005年进展阶段:规划设计阶段业主单位:柳州市城投公司电话:0772-2830681/2830683大辛垃圾场垃圾发电项目所属地区:辽宁所属行业:环保水务项…     

地下排水管道的非损伤检测及管道状态的评估方法

随着越来越重视环境问题,城市污水管道的建设不断增加,大量的污水管道慢慢老化,它们就需要修护和更新。本论文介绍了对污水管道不产生影响的管道检测和评价技术,污水管道防御性维护是非常必要的。     

岩溶地区垃圾填埋场的选址评价探讨

岩溶地区的垃圾填埋选址较为困难,现行的垃圾填埋场选址评价方法又存在较大局限。笔者等依据垃圾填埋场的建设宗旨和选址基本原则,结合岩溶地区的环境地质特点,探讨提出一套适用于岩溶地区的垃圾填埋场选址评价方法。通过实例应用表明,该方法可在现行较难选出垃圾填埋场的岩溶地区,优选出适宜性较好的未来垃圾填埋场,能够担当起解决岩溶地区的垃圾无害化、减量化填埋处置的难题和重任。     

城市垃圾处理方法初探

城市垃圾问题是影响城市环境的一个重要因素,已引起世界各国的普遍重视。垃圾包围城市的现状正困扰着许多城市。因此,城市垃圾 的综合处理已成为保护城市环境、保护城市发展和建设必须解决的问题之一,本文以哈尔滨市为例,探讨了各种垃圾处理方法的可行性,提出了实现垃圾减容化、无害化、资源化的措施。     

污水源热泵技术在城市住宅供暖中的应用研究

随着城市的发展和能源需求的增长,污水的热能回收利用越来越受到关注,开发污水源热泵技术对建筑节能降耗具有重要意义。本文就污水源热泵系统的工作原理、特点等方面进行了介绍,阐述了国内外污水源热泵技术的开发利用历程与工程现状,分析了城市污水热能资源潜力以及污水源热泵技术的发展前景,指出利用污水与环境的温差获取热能具有十分巨大的能量资源前景,适宜的热源距离是污水源热泵开发利用的先决条件,开发污水源热泵系统,可以充分利用城市污水处理厂的二级出水或城市污水作为水源,通过合理利用出水的流量和温差为城市住宅供暖。基于我国能源与环境的现状,污水源热泵系统具有良好的市场前景,是一种值得推广的能源开发利用方式。     

垃圾焚烧发电厂的用地指标研究

垃圾焚烧发电是目前垃圾"资源化、无害化、减量化"的最好措施之一,也是解决垃圾围城、污染环境的最佳途径之一。但由于目前国内垃圾焚烧发电厂用地指标相关的研究不足,使得建设缺乏科学指导,这与垃圾焚烧发电行业蓬勃发展的形势极不适应。本文结合国家和广东省已出台的规定、标准,采用统计分析方法,建立焚烧发电厂建设用地定额指标,为规范其开发建设提供参考。     

Unity of the national and the international in the socio-cultural development of the peoples of the USSR

International unity is becoming ever stronger in this country owing to an increasing similarity in the development of the cultural environment. This comprises the provision of all the country's republics with a sufficient number of schools, theatres, and other institutions and cultural information media in accordance with the needs of the population. An important part is played by the rise in ‘the general educational level, as well as the level of professional qualifications and skills. Among all the Soviet nations and nationalities, this rise being more rapid among formerly backward peoples. Prominent among the factors of internationalization is the progressive development of the nationalities’ cultural resources, while professional culture is being increasingly brought within the reach of the masses.The implementation of the nationalities policy promotes the all-round development of all Soviet nations and nationalities, their drawing together, the upsurge of the individual capabilities of every Soviet citizen.     

Report of the restudy of the defined global stratotype of the base of the Silurian System

The Global Stratotype Section and Point （GSSP） for the base of the Silurian System was defined in 1985. Since that time, a number of researchers have suggested that this section has serious deficiencies for use as a GSSP. As a result, in 2000, the Subcommission on Silurian Stratigraphy （SSS） proposed undertaking a formal restu@ of this GSSP, which was subsequently approved by the International Commission of Stratigraphy （ICS）. The result of this restudy was the formal proposal that the current GSSP, at 1.6 m above the base of the Birkhill Shale, at Dob＇s Linn, Scotland, should be maintained as the same locality and stratigraphic level, but the bios- tratigraphical definition of the boundary should be revised. The previously defined, basal Silurian grapto- lite zone, the Parakidograptus acuminatus Zone, should be subdivided into a lower Akidograptus ascensus Zone and a higher E acuminatus Zone. The base of the A. ascensus Zone, marked by the first appearance of A. ascensus, should be regarded as the biostratigraphic mark for the base of the Silurian. This proposal has now been formally approved by the SSS and ICS, and ratified by International Union of Geological Sciences. This is the first GSSP to undergo formal restudy and redefini- tion, and the proposal also included a recommended procedure for restudy of GSSPs.     

Deviation of the major axis of the inertia ellipsoid of the Moon from the direction toward the Earth

It is known from observations that the center of mass of the Moon does not coincide with the geometric center of its figure, and the line connecting these two centers is not aligned with the direction toward the center of the Earth, instead deviating toward the Southeast. This stationary deviation of the axis of the inertia ellipsoid of the Moon to the South of the direction toward the Earth is analyzed. A system of five linear differential equations describing the physical libration of the Moon in latitude is considered, and these equations are derived using a new vector method taking into account perturbations from the Earth and partly from the Sun. The characteristic equation of this system is obtained, and all five oscillation frequencies are found. Special attention is paid to the fifth (zero) frequency, for which the solution of the latitude libration equations are stationary and represents a previously unknown additional motion of the rotational axis of theMoon in a cone with a small opening angle. In contrast to the astronomical precession of the Earth, the rotation of the angular-velocity vector is in the positive direction (counter-clockwise), with the period T ₃ = 27.32 days. On this basis, this phenomenon has been named “quasi-precession.” This quasi-precession leads to a stationary inclination of the major axis of the inertia ellipsoid of theMoon to the South (for an observer on Earth), making it possible to explain one component of the observed deviation of the center of mass of the Moon from the direction toward the Earth. The opening angle of the quasiprecession cone is approximately 0.834″.     

The Tendencies of the Development of the Mineral-Resources Sector at the Turn of the Century

Important tendencies in development of the world mineral-resources sector at the beginning of the 21st century were an increase in production and consumption of mineral materials differentiated by types of metals and nonmetallic mineral raw materials, by countries and regions, as well as the concentration of the production of mineral raw materials in a small number of countries, and a reduction in industrial reserves of minerals in the world economy, even at the current stage of their extraction. These tendencies should be taken into account in working out a strategy for development of the Russian mineral raw-material base.     

Causes of the famine among the rural population of the Sahelian zone of the Sudan

Taking the example of W Sudan, an analysis of the climatic incidents leading to the two recent famine disasters is made. On this natural background, the human side is investigated. Focus is directed towards the fragile economic structure of the famine-prone population groups. An early-warning system for famine in the Sahelian Zone is proposed taking grain production and storage, livestock development and the relationship between the prices of livestock and grain as major indicators.     

东濮凹陷北部沙河街组三段中亚段沉积环境分析

东濮凹陷北部沙三中亚段广泛发育盐岩和烃源岩,这两个看似不能共存的物质却在这里互层共生。该时期研究区沉积特征为多盐韵律与多层烃源岩互层共生、连续沉积,单个盐韵律厚度从几米到十几米,烃源岩有机质丰度高、类型好。平面上,两者在湖盆沉积沉降中心共生;垂向上,高有机质丰度、好干酪根类型与高盐度地层具有较好的对应关系。因而成为恢复古气候和古环境的重要研究对象。通过岩石学、古生物学以及Sr/Ba、B/Ga、(V+Ni+Mn)、Fe/Mn、Sr/Cu、Mg/Ca、V/(V+Ni)、稀土元素含量和氯同位素等方法对凹陷北部沙三中亚段的沉积环境进行研究。结果表明,凹陷北部沙三中亚段为深水沉积的还原环境,古盐度较高,达到半咸水-咸水沉积;微量元素和孢粉化石特征表明研究区沙三中亚段为温暖潮湿的环境。     

On the consistency of proposed models for the Pyrenees with the structure of the eastern parts of the belt

The structure of the eastern Pyrenees consists mainly of south-directed thrusts involving basement and cover rocks. An antiformal stack developed by the piling up of basement thrust sheets which outcrop in the Axial zone. These structures account for a thin-skinned thrust model rather than a vertical fault model in which the Axial zone would be essentially autochthonous, and the North-Pyrenean fault the axial plane of a fan thrust system. New data from the Eastern Pyrenees and the thin-skinned model suggest that(1) the structure east of the Pedraforca nappe is similar to that of the Central Pyrenees; (2) the cover rocks of the South-Pyrenean units and of the Axial zone-after restoration—built up a northwards-thickening prism consistent with the existence of a unique Pyrenean sedimentary basin during Mesozoic time; (3) the Axial zone is only a complex antiformal stack developed as a part of South-Pyrenean system related to the Paleogene thrusting-tectonics. The Axial zone palaeogeographic area had no special meaning during Mesozoic time.     

The Importance of the Precipitation and the Susceptibility of the Slopes for the Triggering of Landslides Along the Roads

In order to characterise the influence of the heavyrains on the observed landslides during the 1996–1997hydrological cycle, rainfall records for the last 100years are analysed from 104 stations in easternAndalusia. Regarding the amounts of rain recordedbetween October 1996 and March 1997 in the 104stations studied, 31 presented new all-time records;15 presented values that were 80–100% of thepre-1995 record; 49 stations, 80–50%; and 9stations, < 50%. A map has been devised of thesusceptibility of the materials through which thesouth-eastern Andalusian road network crosses,together with an inventory of the damage caused byinstability phenomena on banks and cuttings of theroad network during the winter of 1996–1997. Therelationships between the rainfall during the studyperiod, the damage caused to the road network and thesusceptibility of the materials affected are analysed.The results indicate that there is a clearcorrespondence between the rainfall recorded and thesusceptibility of the materials with the inventorieddamage. It is concluded that the widespread seriousdamage caused in early 1997 to the roads andsurrounding areas in the Alpujarra region and thecoast of the Province of Granada was mainly caused bythe extraordinarily heavy rains. However, considerablyless damage was observed where the susceptibility ofthe terrain is low, thus highlighting the extremeusefulness of terrain-susceptibility maps for riskprevention and territorial planning.