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袋式除尘器在燃油电厂的应用 总被引:2,自引:0,他引:2
阐述了袋式除尘技术及其在我国电厂烟气除尘中的应用,结合北京第二热电厂的应用实例,对其系统的设计,除尘工艺,滤料的选择,清灰方式,安全措施等进行了综述和分析,并就需要进一步考虑的问题进行了探讨。 相似文献
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结合天津第一热电厂给水处理技改工程,对利用河水处理后用于锅炉补给水除盐工艺中混床的原理和操作运行作了具体分析,对混床设计中需注意的事项进行了探讨,为电厂除盐水处理设计运行提供参考. 相似文献
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深度处理设施在太原第二热电厂废水回用中的应用 总被引:1,自引:1,他引:0
结合大唐太原第二热电厂废水回用工程的实例,分析了深度处理设施在电厂废水处理中的应用和应注意的事项,为电厂废水处理方案设计提供参考. 相似文献
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结合天津第一热电厂给水处理技改工程实例,针对海河水质具有的微污染、低温低浊、富营养化特点,对采用反渗透预脱盐系统的预处理工艺进行分析探讨,并对目前预处理设施改造方案的可行性方案提出建议,为类似工程工艺设计提供参考。 相似文献
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对神东公司热电厂水务管理现状进行了分析,并对已经实施和正在实施的节水方案进行总结。神东热电厂对补给水系统、循环水系统和热网水系统采取不同的节水措施,不同水质水各尽其用,大幅度提高了水的重复利用率,经济效益显著。 相似文献
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针对金竹山电厂水力除灰系统采用闭路循环,溢流灰水再利用的方案,设计了模拟试验台,对灰水闭路循环后水质变化进行了探讨,取得了较为满意的结果. 相似文献
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提出一种居民家庭自动蓄水循环系统和二次循环水利用及新型概念房的构想。通过错过夏天用水高峰时段,合理利用夜晚水压进行水箱日常用水的自动补给。中水回用和雨水收集使得在概念房的有限面积内达到最大的水循环利用效率。 相似文献
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国内外研究表明,除了水质,生态用水也是维持生态系统健康发展的重要因素。因此,在水资源配置中保证一定量的生态用水是保护生态环境的重要措施。生态用水具有时空尺度和阈值范围,而人类大规模的水电开发则会造成其时空尺度的改变,甚至生态阈限难以被满足。统计数字表明,近5年来我国新建水电站下泄生态流量的不满足率达到57%。我国目前急需考虑的生态用水政策是:尽快建立河流最小生态流量的相关标准,制定河流生态用水配套法律法规;同时,通过跨流域调水等水段,加强生态环境需水的宏观调控。建议最小生态用水量不应小于工程所在河流控制断面多年平均流量的10%,当多年平均流量大于80m^3/s时不小于5%;同时根据河流的不同生态环境功能,应积极开展多方法、多方案比选。 相似文献
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介绍了脱硫废水引入渣溢水系统的综合处理效果,对处理后水质指标及影响因素进行了长期跟踪分析,结果表明:处理后各水质指标均符合废水回用或排放标准,脱硫废水引入渣溢水系统处理是可行的。 相似文献
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Two enhanced-photodegradable polyethylenes were studied to determine the effect of photooxidative degradation upon transport properties. Water vapor permeability of LDPE films containing metal compound prooxidants, weathered to different extents under outdoor exposure was studied. A film made of LDPE blended with 20 wt% of polycaprolactone was also examined to determine if biodegradation over a 40-day period resulted in a measurable change in its water vapor transport characteristics. A gravimetric technique was used to study the effects of outdoor and weather-ometer exposures on the permeability of carbon dioxide of both the LDPE film and (ethylene-carbon monoxide) copolymer films. Generally, photooxidative degradation was seen to be accompanied by a change in transport characteristics of the polymer films. 相似文献
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应用等标污染负荷法对大庆三十万吨乙烯装置污水处理场的外排水进行了评价,得知外排水中的主要污染因子为COD、BOD、酚和油,并对影响其合格率的因素进行了分析,同时对如何控制污染物的流失及提高外排水中污染物的合格率提出了的建议。 相似文献
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T. Yamada T. Inoue H. Fukuhara O. Nakahara T. Izuta R. Suda M. Takahashi H. Sase A. Takahashi H. Kobayashi T. Ohizumi T. Hakamata 《Water, Air, & Soil Pollution: Focus》2007,7(1-3):259-266
Since 1983, the Ministry of the Environment of Japan has conducted nation-wide acid deposition surveys. To investigate the
effects of acid deposition on surface water, we used the nonparametric Mann–Kendall test to find temporal trends in pH, alkalinity,
and electrical conductivity (EC) in more than 10 years of data collected from five lakes and their catchments (Lake Kuttara:
northernmost; Lake Kamakita: near Tokyo; Lake Ijira: central; Lake Banryu: western; and Lake Unagiike: southernmost). The
pH of Lake Ijira water has declined slightly since the mid-1990s, corresponding with the downward trends seen in the pH and
alkalinity of the river water flowing into the lake. There were significant upward trends in the EC of both the lake and stream
water; the same trends were also found for concentrations. These trends show evidence of acidification due to atmospheric deposition, and this is the first such finding
in Japan based on significant long-term trends. Lake Ijira is located about 40 km north of the Chukyo industrial area near
Nagoya. The annual depositions of H+, nss-, and in Lake Ijira were among the highest of all deposition monitoring sites, suggesting that this is the main cause of the significant
acidification observed in Lake Ijira. No significant trends suggesting acidification were observed in any of the other lake
catchments in spite of the significant upward trends in EC. Upward trends in pH and alkalinity at Lake Banryu and upward trends
in alkalinity at Lake Kamakita were detected, but no change in pH or alkalinity at Lake Kuttara and Lake Unagiike was observed. 相似文献
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