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141.
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Ling Zhang Zengwei Yuan Jun Bi Bing Zhang Beibei Liu 《Journal of Cleaner Production》2010,18(5):504-509
China has rapidly developed a number of Eco-industrial parks (EIPs) in recent years. In order to promote and regulate their development, two government agencies, the Ministry of Environmental Protection and the National Development and Reform Commission are currently engaged in promoting national pilot EIP programs. Both agencies have developed their own management systems, and 60 industrial parks have been approved for construction of national pilot EIPs, among which six parks appear in both lists of the two agencies. This article introduces the practice of the national pilot EIPs. It first describes the management systems and achievements within the two programs, and then summarizes the problems encountered thus far in program implementation. Finally it proposes brief suggestions for future development of EIPs. 相似文献
143.
Jianfeng Liu Xiang Zhang Bi Wu Guoyan Pan Jing Xu Shaofei Wu 《Environmental science and pollution research international》2017,24(26):20995-21010
Land use pattern is an effective reflection of anthropic activities, which are primarily responsible for water quality deterioration. A detailed understanding of relationship between water quality and land use is critical for effective land use management to improve water quality. Linear mixed effects and multiple regression models were applied to water quality data collected from 2003 to 2010 from 36 stations in the Huai River basin together with topography and climate data, to characterize the land use impacts on water quality and their spatial scale and seasonal dependence. The results indicated that the influence of land use categories on specific water quality parameter was multiple and varied with spatial scales and seasons. Land use exhibited strongest association with dissolved oxygen (DO) and ammonia nitrogen (NH3-N) concentrations at entire watershed scale and with total phosphorus (TP) and fluoride concentrations at finer scales. However, the spatial scale, at which land use exerted strongest influence on instream chemical oxygen demand (COD) and biochemical oxygen demand (BOD) levels, varied with seasons. In addition, land use composition was responsible for the seasonal pattern observed in contaminant concentrations. COD, NH3-N, and fluoride generally peaked during dry seasons in highly urbanized regions and during rainy seasons in less urbanized regions. High proportion of agricultural and rural areas was associated with high nutrient contamination risk during spring. The results highlight the spatial scale and seasonal dependence of land use impacts on water quality and can provide scientific basis for scale-specific land management and seasonal contamination control. 相似文献
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塔河油田钻井废弃泥浆无害化处理技术研究 总被引:5,自引:0,他引:5
为了对新疆塔河油田钻井过程中产生的废弃泥浆的污染情况进行研究,提出了以多个井场废弃泥浆为试样,采用水泥、生石灰、粉煤灰等固化剂进行固化处理,对不同井场的废弃泥浆进行泥浆固化的药剂配比试验,经试验分析确定废弃泥浆浸出液主要污染指标为COD cr和pH值,固化剂中的水泥及生石灰对固化效果起着决定性的影响,结果表明以16%水泥+2%生石灰+8%粉煤灰+1%氯化钙+5%石膏的最佳配比方案,使固化后浸出液中各项环境指标达到排放标准,保证塔河油田的废泥浆固化处理能够有效施行。 相似文献
146.
Li Dan Bi Ran Chen Hongxing Mu Lei Zhang Lina Chen Qin Xie Haibo Luo Yongju Xie Lingtian 《Environmental science and pollution research international》2017,24(30):23872-23879
Environmental Science and Pollution Research - Risk assessing newly synthesized chemicals prior to their applications is extremely important, if we want to ensure substitution of risky chemicals... 相似文献
147.
文章对农村面源污染进行了简要介绍,综述了抚顺县农村面源污染现状、存在的主要问题及产生的原因。并对如何缓解目前农村面源污染提出了合理化建议与对策。 相似文献
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研究了粉状活性炭(PAC)和活性焦(AC)吸附对超滤膜(UF)去除再生水中有机物的效能及其对膜污染的影响。结果表明,PAC和AC吸附预处理可有效改善超滤膜出水水质,投量为40 mg/L时,PAC和AC单独吸附对DOC去除率分别为40.2%和32.6%,超滤出水DOC去除率则由直接膜滤时的21.4%提高至47.2%。UF对大于10 kDa的大分子有机物有较好的截留能力,PAC较AC对中小分子有机物的吸附效果更好。三维荧光(3D-EEM)分析显示,原水中溶解性微生物代谢产物和腐殖质类有机物所占比重较大;直接UF对溶解性微生物代谢产物的去除能力较好,投加PAC和AC促进了紫外腐殖酸和类腐殖酸类有机物去除,紫外腐殖酸EEM峰值分别下降51.7%和48.8%,类腐殖酸EEM峰值下降63.0%和59.9%。投加PAC和AC并经0.45 μm膜预过滤可提高超滤膜通量,其在过滤周期内的下降率由直接膜滤时的27.6%分别降至23.5%和24.4%。AC较PAC更为经济,AC-UF可替代PAC-UF作为经济可行的再生水深度净化工艺。 相似文献
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