Filter Press Introduction
Filter press consist of frame, filter plate, pressing system and electric control cabinet. Frame consist of base, push plate and girder and supports the pressing device and filter plate. Filter plates are installed on girder between tail plate and push plate, with filter cloth sandwiched in them. In operation, the pressing device drives the push plate to press the filter plates and filter cloth between push plate and tail plate. The function of electric control cabinet is to control the process of the sludge dewatering, such as set the dewatering time, the pump pressure, the treating capacity, and so on.

A small hole is opened in the middle of the upper end of the plate and the frame. After being pressed, it becomes a channel. The sludge pressurized to 0.2~0.4MPa enters the filter chamber through this channel. The surface of the filter plate is carved with a groove, and the lower end is drilled with a hole for the filtrate discharge. Under pressure, the filtrate is discharged from the filter through the filter cloth, along the groove and the hole, so that the sludge can be dehydrated. The water content of sludge cake after the sludge passes through filter press should be determined according to the characteristics of sludge. Generally, the water content of sludge cake can reach 75%~80%.

Advantages
1. High dehydration rate. The moisture content of mud cake can reach 70% - 85%
2. Simple structure, easy operation, less land occupation and easy maintenance
3. Stable operation, optional filtering area
4. Strong adaptability to materials, suitable for dewatering treatment of various small and medium-sized sludge
5. Fully closed operation mode, very environmentally friendly, no material loss

Application of Filter Press
1. Food industry: fruit juice drinks, various alcohol and sugar foods, starch, soy sauce, etc
2. Chemical industry: fuel pigment, caustic soda, soda ash, chlor-alkali salt, bleaching powder, phosphor, potassium chlorate, potassium sulfate, ferrous sulfate, iron hydroxide, water purification agent, aluminum sulfate, polyaluminum chloride
3. Pharmaceutical industry: erythromycin, spiramycin, tetracycline, oxytetracycline, inositol, organophosphorus, saccharifying alcohol, etc
4. Metal industry: molybdenum, iron, zinc, copper, silver, gold, etc
5. Sewage treatment industry: liquid-solid separation of papermaking sewage, chemical sewage, smelting sewage, printing and dyeing sewage, pharmaceutical sewage, etc