Diaphragm Filter Press is a equipment commonly used in the field of sewage treatment. It can effectively remove suspended matter and solid particles in sewage through special filter media and pressure, and realize the purification and treatment of sewage. The working principle of the diaphragm filter press is simple and efficient, with advantages such as large processing capacity, low operating cost and convenient operation, and is widely used in industrial and urban sewage treatment fields.

The design and structure of the diaphragm filter press enables it to efficiently handle different types and concentrations of wastewater. The sewage is added to the feed system of the diaphragm filter press, and after preliminary pretreatment, large particulate impurities and precipitates are removed. The sewage then enters the filter chamber of the diaphragm filter press, a space composed of multiple diaphragms and filter media. The purpose of the diaphragm is to divide the filter chamber into separate units to ensure that sewage can flow evenly in each unit and no mixing occurs.

In the filter chamber, the diaphragm filter press applies a certain pressure to allow sewage to pass through the filter media, suspended solid particles are trapped on the surface of the filter media, and the clean liquid enters the liquid discharge system through the diaphragm. Filtration media is usually a microporous material, and different materials and precisions can be selected according to actual needs. This filtration method can effectively remove suspended substances, colloids and tiny particles, so that the sewage reaches the discharge standard, or can be used as a pretreatment for subsequent treatment processes.

When the surface of the filter media is covered with a certain number of solid particles, the diaphragm filter pressing machine will automatically switch to the cleaning state. The cleaning process is divided into three stages: pre-flushing, backblowing and defiltration. The solid particles on the surface of the filter media are dissociated and rinsed away by pre-flushing; then, the back-blowing gas or back-blowing liquid is sprayed into the filter from the reverse direction of the filter material to further clean the filter media; the cleaned solid particles are removed from the surface of the filter media by defiltration to ensure the normal operation of the filter chamber.

The operation of the diaphragm filter press is usually automated, and the equipment will be equipped with liquid level sensors, pressure sensors and automatic control systems, which can monitor and adjust the working status of the filter press. During the entire processing process, the diaphragm filter press can achieve continuous and stable operation without manual intervention. The diaphragm filter press can also be linked with other sewage treatment equipment to form a complete sewage treatment system to improve the treatment efficiency and water quality stability.

Diaphragm filter press is an efficient, energy-saving and environmentally friendly sewage treatment equipment. Through special filter media and pressure, it can remove suspended matter and solid particles in sewage and realize the purification and treatment of sewage. The diaphragm filter press not only has the advantages of large processing capabilities, low operating costs, and easy operation, but also can be linked with other sewage treatment equipment to form a complete treatment system. With the advancement of technology and the expansion of application scope, diaphragm filter presses will play an increasingly important role in the field of sewage treatment and create a cleaner and healthier living environment for people.