The types of membrane are divided into many categories according to different functions and structures. MBR membrane is mainly divided into four types according to structure: hollow fiber membrane, flat membrane, ceramic membrane and tubular membrane. Today, Sida can give you a specific introduction.
Hollow fiber membrane (also known as curtain membrane) and flat plate membrane are called "organic membrane", and the main material is PVDF (polyvinylidene fluoride). Now there is a new PTFE (polytetrafluoroethylene) material. When pulling the membrane, the pore size distribution will be more uniform, known as the "king of plastics".
Ceramic membrane and organic flat membrane are called "flat membrane". The chemical stability of ceramic membrane is very good, which can resist acid, alkali, organic solvent and high temperature; It has the advantages of narrow pore size distribution and high separation efficiency. The main materials of ceramic film are alumina, titanium oxide and silicon oxide. The prospect is very good.
As a form of membrane element, organic tubular membrane is suitable for membrane separation technologies such as ultrafiltration, microfiltration and even nanofiltration. Its advantages are wide flow channel, turbulent flow of feed liquid in the pipe and low requirements for pretreatment accuracy of feed liquid. The tubular membrane is easy to clean. In addition to chemical reagent cleaning, it can also be cleaned by mechanical and physical scrubbing. The pressure loss of tubular membrane module is small, so its flow channel is long (up to 48 meters in series) and its filtration efficiency is high.
Flat membrane is a membrane formed by a plate (generally ABS) with a guide channel on it, with lining cloth and PVDF membrane pasted on both sides, and after seamless welding. There are also two kinds of diaphragm, also known as flat film, one is film film, the other is flexible film.
If you want to know more about membrane, please continue to pay attention to Sichuan sidaneng Environmental Protection Technology Co., Ltd.
