水力

The hydraulic characteristicswas studied by the whole experimentation of the intake/outlet. Currently, the trashrack is not simulated because of the model reduced scale, and thought it couldn'teffect on the experimentation.

由于进/出水口的水力特性非常复杂，且国内外的参考实例较少，有必要对抽水蓄能电站进/出水口拦污栅的水力特性作深入分析和比较。

Undernatural ventilation and closed landfilling conditions, the removal efficiency of total dissolved organics is respectively 92% and 87% when hydraulic load is 40 L/(m3·d), and thatof total dissolved refractory organics is respectively 34% and 21% when the hydraulic load is 50 L/(m3·d).

当水力负荷为40 L/(m3·d)时，在自然通风和封闭填埋条件下总溶解性有机物的去除率分别为92%和87%；当水力负荷为50 L/(m3·d)时，总溶解性难降解有机物的去除率分别为34%和21%。

Design of drainage system discharges the way of draining water and the sureness of the system to include; calculation of the water force of the pipeline, mainly includes the design of the crosswise pipe slop and pipe diameter and the design of the vertical pipe diameter; the design of the way of ventilation and the calculation of the ventilative pipe; the design of the inspection shaft to choose the sewage waste water pump.

本建筑为河南省某管理局综合办公楼，对给水排水系统的要求较高。主要设计包括：给水方式的确定，竖向分区的合理划定，管材的确定，管道的水力计算，加压设备和贮水设备的选择计算。排水系统的设计主要包括：排水体制及其排水方式的确定；管道的水力计算（主要包括排水横管的坡度管径的确定，竖管管径的确定）；通气方式的确定以及通气管道的设计计算；集水坑的选择计算并由此选择潜污泵。

The ZZT03 runner has good hydraulic performances and is applicable to the working head of 9 m or less than 9 m. Tests have been made on the elbow draught tube and straight conical draught tube.

ZZT03型转轮具有良好的水力性能，它适用于水头为9 m及以下水头段，为研究其水力性能作了有肘形尾水管和直锥形尾水管的两种试验。

The results indicates, with the same level of other parameters, the TN removal can reach 80.0% and 70.9% with the control of dissolved oxygen under the levels of 0.3-0.6mg/l and 0.6-0.9mg/l, respectively; the TN removal upgrades from 80%, 83% to 84.1% with the decrease of sludge load in the system from 0.1, 0.07, to 0.05gCOD/gMLSS·d; the nitrogen removal only reaches 58% when C/N is 4, but can reach more than 80% when C/N is at or over 7, which indicates that the TN removal increases when higher C/N ratio; when HRT increases from 12h, 18h to 24h, the TN removal also increases from 78.6%, 82.0% to 83.0%; the TN removal average in the system increases from 75.6%, 78.5% to 83.0% with the increase of sludge age from 18d, 20d to 24d; the low oxygen conditions in the modified Orbal oxidation ditch model do not decrease the effect of COD removal, and the dissolved oxygen gradient with the distribution of 0-2-1mg/l in the system ensures the COD removal reaching the range of 80%-86%; and the phosphate removal, however, is not good enough, which varies from 40% to 50%, even lower than 35% in occasional situations, and the phosphate concentration in the outflow varies in the range of 1.28-2.38mg/l, which dissatisfies the discharge standard with the level of 1.0mg/l.

试验结果表明，在其它参数相同的情况下，将外沟道的溶解氧分别控制在0.3～0.6mg/l 和0.6～0.9mg/l 两个水平，外沟道中TN 去除率分别为80.0%和70.9%；系统中污泥负荷分别为0.1gCOD/gMLSS·d、0.07 gCOD/gMLSS·d、0.05 gCOD/gMLSS·d时，随着污泥负荷的降低，TN 的去除率却是上升的，分别为80%、83%、84.1%；本试验中，当C/N 为4时，仅能获得58%的脱氮率，当C/N 为7 或更高时脱氮率能达到80%以上，进水C/N 比值越高，总氮的去除率越高；在本试验中采取的水力停留分别为12h、18h、24h 时，外沟道中的总氮去除率随水力停留时间的增加而增加，分别为78.6%、82.0%和83.0%；当系统泥龄分别为18d、20d、24d 时，系统平均TN 去除率分别为75.6%、78.5%、83.0%，随着泥龄的增大TN 的去除率增加；改良型奥贝尔模型的低氧条件并没有降低COD 的去除效果，系统0-2-1mg/l的溶解氧梯度分布使得COD 去除率一般都在80%～86%之间；本试验中磷的去除效果不好，去除率基本在40%～50%之间，有的甚至低于35%，出水磷的浓度在1.28～2.38mg/l 之间，低于1.0mg/l 的出水排放标准。

It is important for fracturing design and operation to determine hydraulic fracturing initiation pressure and mode.

确定水力裂缝在井壁处起裂的压力和方式，对水力压裂设计和施工有重要的作用。

However, the biomass of nitrifying biofilm could only increase slightly.

水力负荷对脱氮效果有很大的影响，低水力负荷能提高脱氮率。

This paper investigates the favourable impact of the central dumping during high arch dam abutment excavation on river closure.

分析了高拱坝坝肩开挖施工过程中产生的集中堆渣对河道截流的有利影响，提出了坝肩附近集中堆渣能降低截流戗堤龙口水力参数需具备的水力控制条件。

ZWB222 series hydraulic balance valve for finishing hydraulic balance during all offshoot loop of one system.

ZWB222系列水力平衡阀用于完成一个系统中各分支回路间的水力平衡。

Hydraulic balance and application of balancing valve in air conditioning water system;2. After installation of balancing valve and balancing commissioning, the system operates correctly and efficiently.

本文介绍了水力平衡技术在重庆江北国际机场航站楼空调系统中的应用，通过安装平衡阀和进行水力平衡调试，系统实现了正确、高效运行。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。