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泵的揚程計算是選擇泵的重要依據，泵揚程與流量的關系可以參照下面這張圖。 泵揚程由管網系統的安裝和操作條件決定，計算前應首先繪制流程草圖，平、立面布置圖，計算出管線的長度、管徑及管件型式和數量。 一般管網如下圖所示 D——排出幾何高度，m； 取值：高于泵入口中心線：為正；低于泵入口中心線：為負； S——吸入幾何高度，m； 取值：高于泵入口中心線：為負；低于泵入口中心線：為正； Pd、Ps——容器內操作壓力，m液柱（表壓）； 取值：以表壓正負為準 Hf1——直管阻...

混凝？絮凝？助凝？ 在水處理藥劑中，應用最廣泛的是當屬混凝與絮凝、聚合氯化鋁與聚丙烯酰胺了。那么兩者在使用過程中具體有哪些注意事項？讓我們一來一探究竟。 凝聚：投加混凝劑后水中的膠體失去穩定性，膠體顆?；ハ嗄?，結果形成眾多的“小礬花”。 絮凝：凝聚過程中形成的“小礬花”通過吸附、卷帶、架橋等作用，形成顆粒較大絮凝體的過程。 混凝：是凝聚、絮凝兩個過程的總稱。是水中膠體粒子及微小懸浮物的聚集過程。 也就是說，“混凝”包含了從原水投藥到水混合、藥反應（脫穩、絮凝）再到形成大顆粒的絮凝物的整個過程。 而絮凝是指膠體...

1、 What is ultrafiltration membrane Ultrafiltration membrane is one of the earliest developed polymer membranes, and it is a microporous filter membrane with a rated pore size range of 0.001-0.02 μ M. The solvent in the solution and some of the solutes with low molecular weight penetrate the oth...

1、 What is ultrafiltration membrane Ultrafiltration membrane is one of the earliest developed polymer membranes, and it is a microporous filter membrane with a rated pore size range of 0.001-0.02 μ M. The solvent in the solution and some of the solutes with low molecular weight penetrate the oth...

1、 Introduction to water treatment resin Water treatment resin is divided into cationic resin and anionic resin. Cationic resin is subdivided into sodium type and hydrogen type. Sodium type resin exchanges calcium and magnesium ions in water into sodium ions to soften water. Hydrogen resin is to ex...

1、 Noun interpretation (this paper summarizes from eight aspects) 1. Raw water Raw water: refers to the natural water without any treatment or the tap water of the city, etc. is also called raw water 2. Clear water clear water: water that removes suspended impurities from raw water. 3. Desalted w...

1. Why do COD and BOD are often used in wastewater analysis? There are many organic substances in the wastewater, including more than ten, dozens, and even hundreds of organic substances, which can be often encountered. If the qualitative and quantitative analysis of organic substances in the waste...

How often should the RO system be cleaned Generally, when the standardized flux decreases by 10-15%, or the desalination rate of the system decreases by 10-15%, or the operating pressure and the pressure difference between sections increase by 10-15%, RO system should be cleaned. The cleaning frequ...

Wastewater treatment process 1. Technological process of sewage treatment plant picture 2. Wastewater treatment process of diversion biological aerated filter picture 3. Traditional activated sludge process for nitrogen removal picture 4. Two stage biological nitrogen removal process picture...

01 Introduction of application requirements of FRP membrane shell FRP membrane shell, also known as membrane pressure vessel, is a supporting product of reverse osmosis, sodium filtration, ultrafiltration and other devices. It is made of computer program-controlled winding unit and high-performanc...

Among them, there are three core subsystems 1、 Centralized water supply system in hospital The hospital centralized water supply system mainly includes medical pure water centralized supply system and acid oxidation potential water centralized supply system, which basically covers all kinds of med...

Water treatment professional terms, involving chemical water treatment, circulating water treatment, sewage treatment and other fields of water treatment, the author through many years of water treatment work experience summary, edited 180 water treatment professional name analysis, some names for t...