共查询到20条相似文献,搜索用时 125 毫秒
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饮水机市场快速发展品牌格局面临调整 总被引:1,自引:0,他引:1
1994年,国内生产企业成功开发出中国第一台饮水机,历经十三年的发展,水家电市场上活跃着净水器、水处理器、饮水机等产品,而随着人们生活水平的不断提高,消费者关注的焦点逐步集中在健康、节能、环保的饮水机产品上,各大生产企业也纷纷调整经营策略,饮水机产业的竞争日趋激烈。 相似文献
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正目前大量的淡水资源被人为污染,哪怕是经过自来水公司处理,用起来还是难以放心,所以生活中很多家庭会购买净水器来净化水中杂质。那么净水器的滤芯可以清洗吗?净水器滤芯可以使用多久?该怎样更换净水器滤芯呢?这些问题一直困扰着诸多用户。1净水器滤芯如何清洗(1)净水器首次使用应进行冲洗,以冲掉净水器内的保护液。方法如下:将自来水龙头、自来水进水球阀、净化 相似文献
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游泳池和喷水池通常是人可以进入的水域,当其中安装有灯具等电气装置时,忽略建筑物电气装置和灯具的相关安全要求会导致严重的人畜伤害事故。通过提示相关国家标准的相关要求,以及安全特低电压值的理论依据,本文系统阐述了游泳池和类似场所用灯具的防护要求。 相似文献
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ABSTRACTWater quality monitoring is the main basis for water quality assessment and water pollution control. According to Standard Test Method for sanitary standard of drinking water (GB/T5750-2006), we monitor COD, nitrate, ammonia nitrogen, arsenic, TDS and pH of 20 samples in Poyang Lake area rural drinking water. Results show that pass rate of ammonia nitrogen, arsenic and TDS were 100%, pass rates of nitrate was 78.95%, pass rates of pH was 68.42%, and COD indicators pass rate was only 26.32%. Based on the analysis of the main pollutants in drinking water in the area, the nanofiltration membrane technology was applied to the deep treatment of drinking water in the centralized water supply department. 相似文献
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大多数火电厂汽包水位的测量都是采用差压水位计作为主要监测手段,为此介绍了引起差压水位计测量误差的几种常见因素,及针对这些常见因素所采取的方法。 相似文献
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V. A. Malakhov 《Thermal Engineering》2012,59(3):250-257
An aggregative analysis of the economic effect from the main measures for making heat supply a less energy consuming process
is presented. The economic indicators of a heat supply company obtained after putting in use energy-saving technologies are
analyzed. The sensitivity of these indicators to measures stimulating the use of energy-saving technologies is investigated. 相似文献
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The modern state of production and use of geothermal resources of the region is evaluated and the low efficiency of their development is shown. Promising developmental technologies of hydrogeothermal resources of various energy potentials with attachment to concrete geothermal deposits are presented. Technologies on the complex development of hydrogeothermal resources with the use of water for drinking or industrial water supply, the thermal potential for various energy needs, and the extraction of the gas and mineral components dissolved in water are highly efficient technologies, which make it possible to solve important environmental, economical, and social problems of the region. 相似文献
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The environmental indicators of ash and slag removal systems used at Russian thermal power stations are briefly estimated.
The drawbacks inherent in the traditional hydraulic ash removal systems used at thermal power stations are discussed. Main
barriers hindering the use of ashes and slags from thermal power stations are considered, and the possibilities of increasing
the extent of their useful application are analyzed. 相似文献
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