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581.
资源型城市的高质量发展具有重大的战略意义。为清晰认识中国资源型城市转型存在的问题以及高质量发展的路径,邀请来自不同领域的十位专家就当前资源型城市高质量发展的主要困境与突破路径等研究前沿进行访谈,访谈结果表明:中国资源型城市转型取得了巨大成绩,但距离高质量发展的要求仍有较大距离,突出表现在经济发展仍未能摆脱资源依赖的发展路径、推动高质量发展的新要素集聚偏弱和碳减排目标下资源型城市的内、外部均面临着巨大的压力;新时期需要重新认识资源型城市的作用和地位,提升资源型城市保障国家资源能源安全的能力;在深刻把握传统资源禀赋概念内涵基础上实现对新资源体系的再认知,注意挖掘新资源,充实资源型城市研究的新知识体系;要针对不同类型的资源型城市的发展条件,分类施策,因地制宜推动资源型城市的创新发展;要继续提高经济增长的就业弹性,增强经济发展拉动就业的能力,并充分重视就业机会的创造和培育;要加快探索绿色、高效的转型发展道路,同步实现“存量”的绿色化和“增量”的绿色性;要综合考虑资源型城市开发基础和要素资源条件,从传统的“增长和扩张型”转变为“高效增长与精明收缩结合型”发展模式;要整合新数据与新技术方法科学/智... 相似文献
582.
Lo Chen-Chen Liu Wen-Te Lu Yueh-Hsun Wu Dean Wu Chih-Da Chen Ting-Chieh Fang Yu-Ting Lo Yu-Chun Chen You-Yin Kang Lo Tsai Cheng-Yu Lee Yueh-Lun Chuang Kai-Jen Ho Kin-Fai Chang Ta-Yuan Chuang Hsiao-Chi 《Environmental science and pollution research international》2022,29(35):52355-52366
Environmental Science and Pollution Research - The effects of air pollution on sleep and dementia remain unclear. The objective of this study was to investigate the effects of air pollution on... 相似文献
583.
584.
加油站地下储罐系统渗漏污染物监测研究 总被引:1,自引:0,他引:1
加油站地下储罐系统渗漏污染已成为土壤和地下水有机污染的主要来源之一。本研究采用层次分析的方法,以国内研究现状为基础,参照国外加油站地下储罐渗漏污染监测的相关规范,以污染物危害性为主要筛选原则,综合参考渗漏污染物在环境介质中的迁移能力及与现有标准之间的衔接程度,初步筛选TPH、VOC、SVOC、BTEX、PAHs和MTBE为加油站渗漏污染的特征污染物。结合成本效益,拟定TPH、BTEX和PAHs为加油站地下储罐系统渗漏污染监测的首选特征污染物指标,建议在加油站地下储罐系统渗漏污染监测过程中,重视该类污染物定期跟踪监测;VOC与SVOS作为可选测定指标;在饮用水源地周边加油站渗漏污染监测过程中应选取MTBE为选测指标。 相似文献
585.
Organophosphate esters (OPEs), used as flame retardants and plasticizers, are widely present in environmental waters. Development of accurate determination methods for trace OPEs in water is urgent for understanding the fate and risk of this class of emerging pollutants. However, the wide use of OPEs in experimental materials results in blank interference, which influences the accuracy of analytical results. In the present work, blank contamination and recovery of pretreatment procedures for analysis of OPEs in water samples were systematically examined for the first time. Blank contaminations were observed in filtration membranes, glass bottles, solid phase extraction cartridges, and nitrogen blowing instruments. These contaminations could be as high as 6.4–64 ng/L per treatment. Different kinds of membranes were compared in terms of contamination levels left after common glassware cleaning, and a special wash procedure was proposed to eliminate the contamination from membranes. Meanwhile, adsorption of highly hydrophobic OPEs on the inside wall of glass bottles was found to be 42.4%–86.1%, which was the primary cause of low recoveries and was significantly reduced by an additional washing step with acetonitrile. This work is expected to provide guidelines for the establishment of analysis methods for OPEs in aqueous samples. 相似文献
586.
Yang Zhao Kang Xiaoyue Chen Ben Qiu Guanglei Wei Jingyue Li Fusheng Wei Chaohai 《Environmental science and pollution research international》2021,28(11):13151-13161
Environmental Science and Pollution Research - Pretreatment of activated sludge is an important step in increasing the reaction speed during anaerobic digestion by accelerating the hydrolysis... 相似文献
587.
Deng Zhongci Kang Ping Wang Zhen Zhang Xiaoling Li Weijie Ou Yihan Lei Yu Dang Ying Deng Zhongren 《Environmental science and pollution research international》2021,28(3):2914-2922
Environmental Science and Pollution Research - Urbanization in China has dramatically increased from 39.10 in 2002 to 58.52% in 2017. Studies have discussed the impacts of urbanization and its... 相似文献
588.
Novel Al-doped carbon nanotubes with adsorption and coagulation promotion for organic pollutant removal 总被引:1,自引:0,他引:1
Al-doped carbon nanotubes (Al-doped CNTs) were prepared as a multifunctional integrated material of adsorbent and coagulant aid for organic pollutant removal from aqueous solution. It was observed that aluminum species were dispersed homogeneously on the surface of CNTs, and mainly anchored onto defect structures of the CNTs. The introduction of aluminium efficiently improved adsorption ability for methyl orange (MO) onto the CNTs, and maximum adsorption capacity calculated from the Langmuir isotherm model can reach 69.7 mg/g. The MO adsorption kinetics can be better described by the pseudo-second-order and pore diffusion kinetic models, and the diffusion of MO anions into pores of the Al-doped CNT adsorbent should be the rate-determining step. Thermodynamic analyses indicated that the adsorption of MO onto Al-CNTs-2.0 was endothermic and spontaneous. Moreover, adsorption capacity for MO on the Al-doped CNTs was evidently dependent on the CNT dose, solution pH and adsorbent dose. From the perspective of low-cost and multifunctional, suspension obtained during the Al-doped CNT adsorbent preparation, was tested as coagulant to remove humic acid (HA). A significant observation is that the suspension exhibited an excellent coagulation performance for HA, because abundant aluminous polymer and Al-doped CNTs existed in the suspension. 相似文献
589.
590.
Moonkyung Chung Min Woo Seo Kang Suk Kim Jun Boum Park 《Waste management & research》2006,24(3):250-259
Geosynthetic liner systems are generally installed in landfill sites to prevent toxic leachate from escaping into the adjoining environment by utilizing their impervious characteristics. Therefore, it is important to protect the geomembrane from being damaged or destroyed during all phases of landfilling, namely landfill construction, waste tipping and landfill closure. This paper presents firstly the observed performance of a geomembrane liner from a landfill site where the geomembrane liner was installed on the slopes of a Korean landfill; and secondly the results of an inclined board laboratory test. Two types of experiments were conducted to identify the protecting effect of the overlaying geosynthetic on the geomembrane liners. At a testing landfill site, the slope consisted of three different sub-inclines and two 2-m-wide intermediate levels. The sub-inclines were each 8 m in vertical height and their angle of inclination was 1: 1.5 (vertical: horizontal). The reported observations were made for a time period of approximately 1 year, until the landfill was filled with wastes to the top of the uppermost slope. In addition, inclined board laboratory tests were carried out. During the inclined board test, a base table is inclined slowly and steadily until the block located on the base table starts to slide, when the tension and displacements of two geosynthetics, namely the geomembrane liner and protecting geotextile, are measured. In conclusion, test results showed that the down-drag force generated by waste accumulation and sliding of upper material was to a large extent dissipated through the elongation of the protecting geosynthetic overlying the geomembrane and thus was not transferred to the geomembrane. Unless the protecting geosynthetic undergoes structural failure, this stress relaxation phenomenon continues to occur so that the magnitude of tensile force to be applied on the geomembrane remains marginal. 相似文献