共查询到17条相似文献,搜索用时 733 毫秒
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华能玉环电厂4X1000MW燃煤机组生产用水全部采用经“膜法”海水淡化技术处理的淡化海水,该淡水海水具有较强的腐蚀性,对电厂脱硫系统产生一定影响,探讨了淡化海水对脱硫系统的腐蚀及应对措施。 相似文献
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介绍了海水淡化技术现状及浓海水综合利用的意义,分析了低温多效蒸馏和反渗透两种海水淡化工艺在浓海水综合利用时的不同之处,并以1.56万t/d海水淡化工程为例对两种海水淡化工艺进行了综合比较。基于资源综合利用的海水淡化工艺比较为海水淡化工艺的选择提供了一种新的思路,为沿海电厂海水淡化工程在两种海水淡化工艺选择时提供一定的借鉴。 相似文献
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海水淡化技术及其应用 总被引:1,自引:0,他引:1
海水淡化技术是指利用海水脱盐生产淡水的技术过程。目前,海水淡化技术已是解决全球淡水资源危机的重要途径之一。介绍了几种海水淡化方法,对多级闪蒸、低温多效和反渗透三种海水淡化技术的原理、工艺、优缺点及其应用实例行了详细的阐述和比较。 相似文献
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李晓琼 《再生资源与循环经济》2012,5(10):37-40
水资源短缺是全球关注的重大环境问题,而中国是全球最为缺水的国家之一。选取天津北疆发电厂海水淡化项目进行成本实证评估与分析,进行全成本的构成分析和综合核算评估,进而与其他新型水资源利用方法(南水北调、中水回用与污水资源化、雨水利用)进行成本比较与分析,探讨其海水淡化模式应对京津地区水资源危机的可行性。 相似文献
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浓海水利用的生态工业体系 总被引:2,自引:0,他引:2
针对海水淡化后浓缩海水的利用,分析了现有卤水综合利用体系存在的问题,论述了海水化学资源提取技术和综合利用技术的发展,提出了适合海洋化工发展和生态环境需要的浓海水综合利用生态工业体系.在该体系中,以电化学提镁为核心,改变了产品结构和盐类提出次序,充分利用太阳能,降低过程能耗,并与纯碱、氯碱工业相结合,形成全新的生态工业群落. 相似文献
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“十一五”期间,随着节能减排的需要,海水法烟气脱硫工艺(海水脱硫)在我国沿海电厂得到了迅猛发展.针对火电厂海水脱硫检修的管理实践及研究,创造性提出火电厂海水脱硫检修管理的整体设计方案,并对检修周期、检修项目、主要设备的检修工艺及质量标准要求等做出了相应说明.海水脱硫系统检修标准化管理,对提高我国“十二五”期间及以后海水脱硫设备安全、稳定、经济运行具有一定指导借鉴意义. 相似文献
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海水脱硫技术在日照电厂一期工程中的应用 总被引:1,自引:1,他引:0
随着国家节能减排政策的落实,我国沿海地区的很多大型燃煤电厂将选择烟气海水脱硫技术来改善大气环境质量。介绍了烟气海水脱硫技术在山东日照电厂一期工程中的应用情况,并对海水脱硫技术应用中出现的一些问题提出了建议。 相似文献
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总结了深圳西部电厂5、6号机组烟气海水脱硫工程特种防腐及其施工的实践经验,重点介绍了混凝土基体表面特种防腐施工的工艺技术。 相似文献
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针对电容吸附除盐法的缺点,通过对电极进行绝缘处理,开发了一种新型高电压电容吸附除盐技术。实验结果表明:增大外加电压,有利于除盐效率的提高;外加电压为60V时,NaCl去除率可达90%以上;增大废水流速对吸附效果不利;反应温度对处理效果的影响不大;在NaCl质量浓度为80mg/L、外加电压为60V、反应温度为25℃、废水流速为36m/s、反应时间为30min的条件下,经一级处理和二级处理后出水的NaCl质量浓度分别为39mg/L和16mg/L,NaCl去除率分别为51.3%和80.0%。 相似文献
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Masazumi Yamashita Mina Dozono Tomofumi Takahashi Katsuhisa Honda 《Journal of Material Cycles and Waste Management》2012,14(2):146-151
We examined the removal and degradation efficiencies of regenerated amorphous iron oxide on tributyltin (TBT) and triphenyltin (TPT) in seawater. It was confirmed that following contact with iron oxide at 20 and 60?°C, the half-lives of TBT and TPT were shortened. These half-lives were from one-thousandth to one-tenth for natural environment conditions. Dibutyltin and benzene were identified as the reaction products from TBT and TPT, respectively, indicating that the degradation pathways were mainly dealkylation and dephenylation. These results indicate that the treatment method by natural energy will enable the economical and rapid reduction of organotin compounds (OTCs). For OTCs in seawater will be adsorbed on the iron oxide by the ebb and flow of the tide and solar energy will be heat source for degradation when iron oxide is prepared in coastal locations. 相似文献
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In this study, we followed the chemical changes occurring in coal ash exposed to prolonged (300 days), large scale, contact with running seawater. Four major components (Al, Ca, Mg, Fe) and seven minor and trace elements (Cd, Cr, Cu, Mn, Zn, Pb, Hg) were measured in four coal ash types: fly and bottom ash freshly obtained from coal-fired power plant, and old ash (crushed and blocks) recovered from the sea after 3-5 years contact with seawater. Changes occurred in the chemical composition of the coal ash along the experiment: Fe increased in fresh ash, Al increased in old ash and Ca increased in all ash types except old ash blocks. Cu and Hg decreased in fresh fly ash while Cr increased, Cd decreased in all ash types except bottom ash, and Mn decreased in bottom ash. Most of the changes occurred in the fresh fly ash, and not in the old ash, indicating equilibrium after prior exposure to seawater. In addition, more changes occurred in fresh fly ash than in bottom ash, emphasizing the differences between the two ash types. While the changes in the concentrations of the major elements may be an indication of the integrity of the ash matrix, the only elements of environmental significance released to the environment were Hg and Cd. However, calculated seawater concentrations were much lower than seawater quality criteria and therefore the coal ash was considered suitable for marine applications concerning seawater quality. 相似文献