Economic Development Mode and Countermeasure Research on the Nansi Lake Drainage Area Based on Circular Economy

Firstly,it is pointed out that circular economy should be vigorously developed in the Nansi Lake Drainage Area,and the connotation of circular economy is expounded.Then,problems in developing circular economy in Nansi Lake Drainage Area are analyzed from the aspects of agriculture,industrial enterprises,and waste utilization.Finally,combining with the four modes of peasant household,enterprise,region and society in the development of circular economy,corresponding countermeasures are put forward for the circular economy in Nansi Lake Drainage Area,such as establishing the government guidance mechanism for big agriculture circular economy in Nansi Lake Drainage Area,constructing incentive systems for industrial enterprises adopting circular economy in Nansi Lake Drainage Area,adjusting the industrial structure of Nansi Lake Drainage Area,and optimizing the energy consumption structure.

Emergy-analysis based approaches to develop circular economy in the Three Gorges Reservoir area

The eco-environment and the condition of economic development in the Three Gorges area were evaluated with emergy indices calculated with the statistic data of the years from 1997 to 2005. The rising environmental loading ratio indicates an increasing pressure of economic activities on the environment and the economic development achieved at the cost of over-exploitation of resources and environment deterioration. The net emergy yield ratio implies that the economic system of this area was a self-contained, resource-export-oriented type at a relatively low level of technology. The emergy sustainability index of about 6 implies the economy of this area was under developed but had a potential to grow. According to the results of the emergy analysis, circular economy should be taken as the economic model of this region's development. This economic system should be water-resource-oriented and more open, make combined use of local and extraneous resources, and have an updated systematic structure with emphasis on emergy recirculation.

Paths for the Coordinated Development of Rural Economy and Environment in Economically Underdeveloped Areas——A Case of Huaian,China

Taking Huaian as an example,the rural economic and environmental problems in economically underdeveloped areas are expounded.The results show that rural areas in economically underdeveloped areas confront with lagged economic development,serious environmental pollutionand scarce shortage of equipments for treating environmental pollution.The causes of problems are analyzed,including inadequate fiscal supportfrom the local government;unscientific system for assessing government officers' performances;backward ideas in environmental protection and im-perfect laws and regulations on environmental protection.Based on these causes,the strategy of employing the circular economy to promote the co-ordinated development of rural environment and economy in economically underdeveloped areas is put forward.The strategy covers transformingthe way of agricultural production;adjusting agricultural production structure;positively collecting funds and increasing the input on handling rural en-vironmental problems;strengthening the efforts on promotion and education,and forming the healthy habits of consumption;enforcing supervisionand establishing a professional administration team for protecting rural environment;laying stress on rural technological innovation and strengtheningthe force of expansion;accelerating the path of industrialization and promoting the industrialization of villages and towns vigorously.

Development Model of Ecotourism Circular Economy in Lakefront Scenic Areas——A Case Study of Luchong Scenic Area by Fuxian Lake,Yunnan Province

Strategies of "guidance to different types of areas,promotion step by step" were given to study the development model of ecotourism circular economy in different types of tourist sites.By taking Luchong Scenic Area by the Fuxian Lake,Yunnan Province for an example,the general model of ecotourism circular economy in lakefront scenic areas was summarized,it was stressed that ecological principles and "5R"(rethinking,reducing,reusing,recycling,repairing)should be followed in its construction.Characteristics of a lakefront scenic area and actual conditions of its location region should be taken into consideration,with sewage treatment and lakefront environment protection as the focus,green scenic area and green tourism community as the carrier,a development model of ecotourism circular economy was established by considering relevant elements such as clean production,green consumption,waste processing,ecological compensation and industrial coupling,effective measures were given to introduce theories into practices,which would be the only chance for the lakefront scenic area realizing its sustainable development.

Prospering Revolution of Resource Efficiency in Northeast Industrial Area in China

Despite its strong advantages in resource, technology and human resource, China's Northeast Industrial Area is also experiencing problems of unreasonable industrial structure, envi- ronmental pollution, and the degradation of ecological condition, etc., which prevent this area from achieving a sustainable devel- opment. Through analyzing the resource problem, the present paper proposed a strategy of circular economy for the prosperity of this are, discussed the theories of circular economy and re- source recycling, and finally concluded that improving resource productivity is at the core of circular economy.

Ecology economic mode of mining area and its way to realize

Practice has proved that if the traditional economic development mode of isolating exploitation of resources from environmental protection was adopted, or the land reclaim mode of managing after having been destroyed was taken, it is unable to solve the serious environmental problem of mining area effectively. According to the thought of sustainable development, the ecology economic mode of mining area-regard mining area as one three-dimension compound ecological economic system was put forward, and the exploitation and reconstruction activities were arranged, according to the objective rule of the whole operation of ecological economy, so as to make ecology economic system’s whole function optimize, the regional ecology harmonious and the pollutant be controlled in the whole course. It was discussed that the way to realize the ecology economic mode of mining area; the ecological programming of mining area on the basis of the cleaner production and green products strategy; the whole course controlling of ecological disruption based on the ecological industrial technology; the land reclaiming on ecological agricultural technology and the integration craft of exploitation of resources and ecology reconstruction of mining area based on the two integrated new technologies; and the technological system about the programming, monitoring, and appraising on exploitation of resources and the ecological reconstruction of mining area based on “3S” technology.

Non-explosive mining and waste utilization for achieving green mining in underground hard rock mine in China

Innovations of mining technologies were proposed by beneficial utilizations of unfavorable factors such as high geostress,high geotemperature and high mining depth to achieve green mining as mining depth increases inevitably.Cuttability of deep hard rock was investigated by experimental and regressed analyses to find the reasonable stress adjustment method to improve non-explosive mechanized fragmentation for hard ore-rock.A non-explosive mechanized and intellectualized mining method was proposed to continuously and precisely exploit phosphate underground,which promoted the high-recovery,low-waste and high-efficiency exploitation of phosphate with recovery rate over 90%,dilution rate near 5%and cutting efficiency about 107.7 t/h.A circular economy model and the backfill system were proposed to conduct resource utilizations of solid waste,by which the utilization amount of waste increased year after year.In 2018,the utilization amounts of phosphogypsum,yellow phosphorus slag and waste rock increased to 1853.6×10^3 t/a,291.1×10^3 t/a and 1493.8×10^3 t/a,respectively.

抚顺矿区绿色低碳循环经济高质量发展的探索与实践

抚顺矿区随着开采年限的增加,煤炭资源逐渐减少,特别是国家“保城限采”后,大量城下压煤无法开采,煤炭可采储量锐减。为了克服企业困难,经过多年反复不断地探索与实践,逐渐形成一个围绕煤炭和油页岩综合开发利用为核心,具有科学性、循环性、增值性的循环经济模式,并不断发展壮大。抚顺这个百年老矿区发展循环经济具有重要意义,其发展历程以及取得的经验说明,循环经济是煤炭企业实现高质量可持续发展的必然选择。

循环经济视角下的工业遗产保护和利用——以保定乐凯老厂区为例

循环经济理论为工业遗产的保护和利用提供了有效途径。通过应用减量化、再利用和资源化的“3R”原则,可以建立一个工业遗产保护和利用的框架。文章以保定市乐凯老厂区为例,在分析了乐凯老区的历史沿革、地理区位、规划定位及存在问题以后,提出了减量化、再利用、资源化的工业遗产保护和利用的改造方案,阐述了循环经济理论在工业遗产保护和利用中的应用。

Comparing the costs and benefits of virgin and urban mining

Resource and environmental management are shaping our society and economy.Virgin mining is rapidly becoming unsustainable as primary resources are in increasingly short supply and energy consumption continues to increase.Urban mining through a circular economy has emerged as a promising option for securing copper and aluminum resources.However,the sustainability and viability of this circular economy industry are heavily dependent on its profitability.Here,we demonstrate the economic benefits of urban mining for anthropogenic minerals:e-waste,end-of-life vehicles,waste wiring and cables.The material and cost flows associated with urban mining are deeply examined.Through life cycle cost and cost-benefit analysis,the cost of obtaining one ton of copper or aluminum is found to be,on average,3,000 US$or 1,660 US$,which is significantly lower than the cost of virgin mining.Moreover,in terms of the costs and benefits,copper may differ tremendously from aluminum depending on the type of anthropogenic mineral.Some additional regulations or policies enactment need to reinforce the urban mining and circular economy.

矿区林下经济植物种植对根际土壤生物群落特征及理化性质的影响

这是一篇矿山环境工程领域的论文。为评价离子型稀土矿区林下经济植物种植对根际土壤生物群落特征及理化性质影响,选取何首乌、葛根等7种典型林药经济植物和黑麦草、狼尾草等7种典型林草经济植物为研究对象,开展林下经济植物种植盆栽实验。通过测定植物株高、叶面积、地上/地下部生物量和土壤全磷、全钾、全氮、速效氮、速效磷、有机质、阳离子交换量以及微生物群落组成、丰富度、多样性等指标,综合研究林下经济植物种植对根际土壤生物群落特征及理化性质的影响。结果表明:种植中草药类植物会增加微生物多样性,而种植牧草类会对微生物群落组成产生一定的影响;种植中草药类林下经济植物对土壤肥力有较明显的提高,粉防己最为明显较照对组全氮、碱解氮、有机质、分别提高300.0%、118.5%、825.3%;种植牧草类对土壤肥力影响不明显。通过本文研究表明,种植林下经济植物会对土壤生物群落产生一定的影响,并在一定程度上提高土壤肥力。

中国报废飞机的资源回收潜力评估

为厘清飞机的报废代谢机制及我国报废飞机的回收潜力,本研究考虑了五类典型飞机,首先利用保有量系数法,对飞机的报废量进行评估,然后估算了报废飞机中有价值资源(如黑色金属、有色金属和稀有金属)的产量.主要研究结果如下:报废飞机的潜在重量从2015年的472t迅速增长到2020年的1034t;报废飞机的回收经济潜力从2015年的约630万元增长到2020年的约1500万元,到2040年预计约1.3亿元;在所有机型中,波音737和空客A320报废量最大,且有色金属在飞机中占比最高.因此,相关回收企业在规划产能分配时,可重点关注这两种机型,并提高有色金属的回收技术.

循环经济视域下北方低碳农业发展策略研究

农业是巨大的碳汇系统,具有极大的减污降碳潜力,然而,乡村方面的减排问题常常被忽视。北方农村是我国重要的粮食生产基地,其碳排放量不容小觑。本文首先阐述了在北方农村发展低碳农业和循环经济的重要意义,然后阐述了北方农村低碳农业发展现状及问题,并针对问题提出相应的解决措施,最后阐述了北方农村庭院低碳农业装置的设计思路,提出低碳循环模式和生产运作模式。

环境脆弱区大型露天煤矿开发与生态环保协调发展研究

简要介绍了准能矿区地形地貌特征,研究了地处荒漠地区的准能矿区生态修复治理的难点和难题。阐述了国能准能集团坚持“边开采边修复”原则,建立露天煤矿水土保持宏观防御、“以蓄代排”、分散径流水蚀控制、坡面水土流失生态综合防护、人工防排水系统、生物防治技术等关键技术体系,形成与生产同步推进、规范排土作业、筛选适宜性植物、科学配置植被、标准化作业、土壤熟化改良等科学规范的矿区生态建设模式,以及取得的突出成效。立足准能集团绿色发展战略,研究了建设矿区生态经济的国家政策导向和准能集团自身具备的优势,结合准能集团目前已经取得的生态经济建设成果和良好的经济效益,认为,准能集团通过“生态+”方式构建的丰富多元产业业态,进一步提升了企业绿色品牌价值和核心竞争力,为能源企业绿色低碳转型发展做出了典型示范。

硬岩矿山开采方式变革与智能化绿色矿山构建——以开阳磷矿为例

在阐述矿山开采模式历程、非爆连续开采和智能化开采现状的基础上,探讨硬岩矿山开采方法变革与智能化矿山构建。基于深部开采矿岩受力特征、秉承"变害为利"的思想,构建了深地资源安全高效开采发展框架和矿山循环经济模式,并以开阳磷矿为例,初步实践了矿山深部硬岩开挖与灾害控制互换的非爆连续开采与资源开采无害化循环利用新模式;构建和完善了智能化矿山理论框架和方法体系,在资源与开采环境可视化、生产过程与设备智能化、生产信息与决策管理科学化的基础上,借助数字化建模软件、信息采集系统、光纤环网,人机交互系统和数据传输系统等,架构了开阳磷矿三维可视化集成平台,实现了设计智能化、监测可视化、设备自动化、生产系统无人化和管控一体化,为深部固体资源安全高效智能化开采与循环利用实践提供参考。

资源与环境协调(绿色)开采

分析了研究煤炭资源绿色开采的必要性和意义,对煤炭资源绿色开采的内涵作了进一步的阐述,介绍了绿色开采技术体系框架及其研究进展.从煤炭经济与管理角度,分析了实现绿色开采存在的困难,并提出了相应的政策建议.

蚌、鱼混养在池塘养殖循环经济模式中的净化效能

以TP、TN、PO4^3--P、NO3^--N、NO2^--N、NH4^＋-N、CODMn、Chla等为主要水质指标研究了在池塘养殖循环经济模式中蚌、鱼混养对主养区养殖废水的净化效能。结果表明：在7月30日到12月2日的5次测定中，除Chla外，其他指标的去除率表现为先升高后降低的趋势。其中NH4^＋N在各测定时间的去除率在25．58％-50．82％之间变化，平均去除率为38．05％，8月28日去除率最大，12月2日去除率最小；NO2^--N、NO3^--N、PO4^3--P、TN、TP和CODMn去除率分别在16．95％-45．45％、25．23％～48．48％、18．37％-52．43％、19．47％-49．39％、12．24％-50．00％和31．88％～49．63％之间，平均去除率分别为26．93％、34．75％、36．50％、29．66％、32．49％和41．21％。且均在9月29日去除率达到最大，12月2日降低为最小。蚌、鱼混养对Chla的去除效果明显，平均去除率达83．49％。各测定时间的出水水质综合营养状态指数均明显低于进水。认为蚌、鱼混养对主养区养殖废水具有很好的净化效能。

煤矿矸石处理与利用的合理途径探讨

提出了煤矸石处理与利用应遵循减量化排放、再利用、再循环,适宜性、经济高效和环境效益最佳的原则;煤矸石的分类以及物理化学与矿物组分分析是矸石得到合理利用的基础工作,矸石的岩石类型、有机碳含量、全硫含量、Al2O3/SiO2比值、Fe2O3含量及CaO和MgO含量等指标是矸石分类的基础,煤矸石的不同用途对矸石的成分有一定的要求,煤矸石的不同处理与利用方式消耗的资源量（或环境容量）不同,利用处理单位数量的矸石占用的生态足迹及处理利用矸石产生的万元经济效益占用的生态足迹两个指标综合确定徐州矿区煤矸石的合理利用途径,得出徐州矿区发热量达到2100-4200 kJ/kg的矸石发电优于制砖.

资源与环境协调(绿色)开采及其技术体系

煤炭资源开采对环境的影响问题,是国际上广泛关注的焦点问题,更是影响中国社会与经济发展战略的重要问题之一.从国家对煤炭工业发展要求出发,阐述了研究煤炭资源绿色开采的必要性和意义,对煤炭资源绿色开采的内涵作了进一步的阐述.在论述煤炭资源绿色开采技术体系框架的同时,对保水开采、煤与瓦斯共采、条带开采与充填开采、井下矸石处理、煤炭地下气化等主要的关键问题与研究现状作了深入的分析,提出了进一步研究与发展的建议.

矿区循环经济评价指标体系的构建及评价方法研究

基于循环经济理论与评价指标体系建立的一般原则,结合我国煤炭矿区的特点,本文首先构建了矿区循环经济评价的指标体系。其指标体系由资源产出、资源消耗、资源综合利用、废物排放四个一级指标组成,每个一级指标又包括相应的二级指标;然后,确定了基于熵和AHP的矿区循环经济评价方法,把利用AHP得到的主观权重与评价对象固有信息计算出的熵权相结合,得到综合权重;最后,计算出矿区循环经济发展水平总指数。本评价方法在淮北矿区得到了具体应用,效果较好。