专业英语(给排水与环境工程李田)Unit9.pptVIP

新浪微博：南昌工程学院臾凉先森 Unit 9Sedimentation —p59 新浪微博：南昌工程学院臾凉先森 New words and expressions potable adj. 可饮用的， potable water Clarification n. 澄清，净化 clarifier n. 澄清池，澄清器开. apparatus n. 器械, 设备, 仪器 prechlorination n. 预氯化 inlet? n. 进口 turbulent ? adj. 紊流的，湍流的 Turbulence n. 紊流，紊乱 perimeter ? n. 周长 圆周 weir ? n. 堰，溢流堰 layout n. 规划, 设计, (书刊等)编排, 版面, (工厂的)布局图 rectangular adj. 矩形的，成直角的 * 新浪微博：南昌工程学院臾凉先森 New words and expressions Inclined tube n. 斜管 effluent adj. 流出的 n.流出物, 出水 Spherical n. 球形的 球的 deposit n. 沉淀物 堆积物 ；储蓄 存款 Reinforced concrete n. 钢筋混凝土 controversial ? n. 争论的 争议的 Innovation n. 改革 创新 inclination adj. 倾斜, 弯曲, 倾度, 倾向, 爱好 hexagonal adj. 六角形的 六边形的 backwash n. v. 反洗 反冲洗 module n. 模数，模块，组件 * 新浪微博：南昌工程学院臾凉先森 Sedimentation or clarification is the removal of particulate matter, chemical floc, and precipitates from suspension through gravity settling. 沉淀和澄清是从悬浮物中通过重力沉降去除颗粒物、化学絮凝产物和凝结沉淀物。 This makes water clarification a vitally important step in the treatment of surface waters for potable supply and in most cases the main factor in determining the overall cost of treatment. 这使得水的澄清是饮用水供应中地表水处理的至关重要一步，在很多情况下，它也是决定全部水处理费用中主要的因素。 Poor design of the sedimentation basin will result in reduced treatment efficiency that may subsequently upset other operations. 糟糕的沉淀池设计将会导致降低处理效率，接下来这也许会影响到其它（水处理工艺）的运行。 * 新浪微博：南昌工程学院臾凉先森 Surface water containing high turbidity may require sedimentation prior to chemical treatment. 地表水（包含）在高浊度下就要求在化学处理工艺之前沉淀。 Presedimentation basins are constructed in excavated ground or out of steel or concrete. 预沉淀池建在被挖坑的地下或用钢筋混凝土建造。 Steel and concrete tanks are often equipped with a continuous mechanical sludge removal apparatus. 钢筋混凝土池通常装配有持续的机械除泥设施。 * 新浪微博：南昌工程学院臾凉先森 The minimum recommended detention time for presedimentation is 3h, although at many times of the year, this may not be adequate to remove fine suspensions. 在预沉池，（被建议）规定的最短停留时间是3小