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机械搅拌澄清池适于高浊度水型原水的处理,机械搅拌澄清池的运行状况直接影响后续水处理设备能否安全稳定经济运行。通过试验,分析机械搅拌澄清池容积利用系数偏低的原因,重点在运行管理上提出解决方案。为使机械搅拌澄清池适于低浊度原水处理的需要,从机械搅拌澄清池内部结构上,提出了合理改进意见。 相似文献
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分析了宝鸡第二发电厂原有600m3/h机械搅拌澄清池存在的问题,结合利用循环水排水,提出了澄清池的改造方案:(1)加装斜管;(2)改变助凝剂加药点;(3)加酸控制;(4)调整、修复集泥装置和取样点。改造后的运行试验表明,澄清池出水水质优良,改造获得成功。 相似文献
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前言凡使用地表水为锅炉补给水处理水源的电厂,都设有凝聚澄清设备。近年来使用最多的是机械搅拌加速澄清池。从省内的几个电厂看,虽然都进行了凝聚澄清处理,但终因被处理水水质有较大差异(污染及季节变化)而使澄清池出水水质常有恶化现象。对除盐系统的运行造成很大威胁,有的厂出现除盐讨备运行周期短,产水量低,甚至除盐设备达分几个小时就失效,造成除盐水水质不合格。现以壮热厂为例,说明凝聚澄清处理在水处理技术中的重要作用。l凝聚澄清效果该厂使用的水源为牡丹江水,其水质特点为:全固形物夏季在150mg/L,冬季在70mg/L… 相似文献
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在对华能丹东电厂化学水预处理设备--机械搅拌澄清池的考核调试中,发现设备运行方式存在问题,严重影响设备的稳定运行,导致2台机组蒸汽质量氢导超标.为确保澄清池稳定运行.必须消除原设备存在的缺陷.改变澄清池运行方式后,2台机组的蒸汽质量得到了改善,确保2台机组的安全运行. 相似文献
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本文结合越南海防电厂一期(2×3MW)工程实际,简述了海防电厂原水预处理及锅炉补给水处理流程,对机械加速澄清池搅拌刮泥机、重力式无阀滤池、活性碳过滤器和离子交换除盐等主要处理设备的结构和功能也一并做了简要介绍。 相似文献
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影响混凝效果的因素及提高澄清池处理水质的措施 总被引:1,自引:0,他引:1
水旋澄清池是连城电厂水质预处理系统中的主要设备,其处理水质的质量好坏,直接影响后序设备的运行及全厂生活用水,该文根据10余年以来该池运行的实际,提出了影响混凝效果的因素及澄清池处理水质的一些措施。 相似文献
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掌鸠河引水工程是一项承担昆明市城市供水的工程,是云南省城市供水规模最大的建设项目,亦是是云南省第一个利用日本国际协力银行贷款建设的为城市供水的工程。建设规模为日供水6×105 t的供水系统,掌鸠河引水供水工程主要包括:水源工程-云龙水库、输水工程、净配水工程,主要介绍首部枢纽工程闸门及启闭机等金属结构设计和布置情况,并对其特点进行了阐述。 相似文献
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基于GIS的潘家口水库面源污染负荷计算 总被引:30,自引:0,他引:30
潘家口水库是海河流域的重要水源地,在水资源匮乏的北方地区,水源地的保护有非常重要的意义。本文内容是海河流域重要水源地富营养化防治研究的一部分,利用SWAT模型研究了潘家口水库上游地区面源污染负荷和产出特征。SWAT模型是一个物理分布式的流域面源污染计算模型,AvSwat是ArcView软件的一个扩展模块,可以处理SWAT模型需要的GIS数据。文中利用实测数据对模型进行了参数率定,对不同水平年进行了面源污染负荷计算,并分析了施肥对于面源污染负荷的影响。 相似文献
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水电开发对天然河流的水文情势、水环境等势必会产生一定影响,尤其对于开发影响区内存在饮用水水源地此类敏感环境保护目标的情况,影响更是不容忽视.本文以汉江上游拟建旬阳水电站对其库区内安康马坡岭、许家台饮用水水源地水质的影响为研究实例,采用三维水动力学水质数学模型为研究手段,对电站水库兴建前后上述两水源地的COD、NH_3-N污染物浓度分布状况进行了计算,并对比分析了建库前后水源地水质的变化趋势,得出了电站开发对其影响区内饮用水水源地水质的影响结论,为水电开发影响区内饮用水水源地保护措施的提出提供了理论依据. 相似文献
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再生水作为可靠的水资源,已广泛用于我们的生产和生活中。但再生水水源复杂,其处理工艺根据其水源和用途也存在差异。本文就再生水在国内外电厂中的应用和系统设计做出简单介绍和比较。可以对类似再生水回用工程的设计具有一定的指导和借鉴意义。 相似文献
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Do-Hyun Kim Ilev I.K. Kang J.U. 《IEEE journal of selected topics in quantum electronics》2008,14(1):82-87
We have experimentally demonstrated a fiberoptic confocal microscope using a 1.55-mum laser source. A compact and efficient Er-doped fiber laser source and conventional single-mode fiber components were used to construct a near-infrared fiberoptic confocal microscope system with 3-D scanning capability. A broadband 1.55-mum light source was used to reduce fringe patterns and interferences that occur when a highly coherent source is used. Our system showed a lateral resolution as high as 1.1 mum with a 60times objective lens, which is close to the theoretical limit. The system can be used in various multimodal biophotonics platforms including precise 3D imaging, biosensing, and laser tissue ablation due to its high water absorption characteristics while maintaining low thermomechanical and self-focusing damage from high-power lasers. 相似文献
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Results from laboratory investigations and industrial tests of the coagulation of source water at the Pskov district power station are presented. It is shown that the source water may not be alkalified if it is treated with aluminum oxychlorides. As a result, the clarified water becomes less corrosive and a lower salt load is placed on water treatment plants as compared with the case when aluminum sulfate is used for coagulation. 相似文献
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The method for increasing the efficiency of thermal deaerators and calciners of a TPP is considered; it consists of the use of a turbulent mass transfer device with random small packing. Before entering the packed bed in water, air (decarbonization) or water vapor (deaeration) is supplied. Chaotic nozzle creates intense turbulent interaction mode of air (vapor) with water and splitting it into small bubbles; thus the specific surface area of the contact of phases significantly increases, and high efficiency of mass transfer (extraction of dissolved gases) is ensured. A turbulent mass transfer device is a circular channel with connections for connecting of the source water to a pipeline. Inzhekhim chaotic nozzle is used with large free volume (95%) and the specific surface area of 150–300 m2/m3. The nozzle is made of a thin metal strip that may have a rough surface and is retained in the channel by means of two grids. For the calculation of turbulent mixer, mathematical model of the flow structure is presented, which is built with the use of a one-parameter diffusion model and a semiempirical reverse mixing ratio. Accounting of interphase transfer of dissolved gases is carried out via volume source of weight. The equation to determine the weight source and calculation of its parameters is presented. In the particular case, transition to the cell model is made and an expression for calculating the profile of concentrations of dissolved gas is obtained along the channel with a nozzle. An example of calculating the efficiency of turbulent mixer upon removing dissolved carbon dioxide from water at a TPP is shown. Recommendations on the use of the considered technical device are given. 相似文献
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