Filter cloth for wastewater treatment

The filter cloth material of the sewage treatment filter press can withstand any dust at high temperature and contains a large number of corrosive substances such as sulfur dioxide, nitrogen oxides, carbon dioxide, acid, etc. When using the filter press equipment, it is necessary to use the filter press filter cloth to achieve good filtration effect. Characteristics of customized sewage treatment filter cloth for filter press;

1. Acid and alkali resistant, with tensile strength.

2. After shape correction, it becomes smooth and flat, with good air permeability and water permeability.

3. The characteristics of strength and durability, easy peeling and easy regeneration of filter cake.

4. The interface is sewn with acid and alkali resistant strong thread, which is durable.

Application of wastewater treatment filter cloth: It is widely used in the fields of chemical, metallurgy, petrochemical, pharmaceutical, food, mineral, ceramic and so on, suitable for various types of filter press, such as frame filter press, box filter press and membrane filter press. We can provide free samples if needed.

Product Characteristics and Applications

1. Polyester filter cloth for wastewater treatment is divided into long fiber polyester filter cloth and short fiber polyester filter cloth. The material characteristics of polyester short fiber filter cloth are acid resistance and weak alkali resistance. Good wear resistance, corrosion resistance, recovery, but poor conductivity.

Polyester fibers generally have a heat resistance of 130-150 degrees Celsius. In addition to the advantages of ordinary felt filter cloths, this product also has good cost-effectiveness and wear resistance, making it a widely used kind of felt filter material.

Polyester filter cloth is used in: pharmaceutical, sugar production, food, chemical, metallurgy, industrial filter press, centrifuge, etc.

Parameters of polyester filter cloth

Heat resistance: 120°C,

Relative elongation (%): 20-50,

Tensile strength (g / day): 438,

Melting point (°C): 238-240,

Melting point (°C): 255-260.

Specific gravity: 1.38.

Filtration efficiency: The raw structure of polyester short fiber filter cloth for wastewater treatment is short and woolen, and the woven fabric is dense, with good particle retention but poor peeling and air permeability. The strength, wear resistance and water leakage are not as good as those of long fiber polyester filters.

2. Nylon wastewater treatment filter cloth has high strength, ranging from 4-5.3cN/dtex. The elongation is from 18% to 45%. At an elongation of 10%, the elastic recovery rate is greater than 90%. Nylon has relatively strong strength among fibers. According to measurements, the wear resistance of nylon fibers is 10 times that of cotton fibers and 50 times that of viscose. Due to its excellent wear resistance compared with various fibers, it is an ideal material for making automobile tires when pressing with rubber. Nylon fibers are resistant to strong alkalis and weak acids. After treatment with NaoH(10%) at 95°C for 16 hours, the strength loss may be small, but nylon is not lightfast and is prone to discoloration and brittleness. Therefore, nylon fabrics should not be exposed to sunlight for a long time.

Application: Rubber, ceramics, pharmaceuticals, metallurgy, etc.

3. Classification of polypropylene filter fabric for wastewater treatment: polypropylene short fiber filter fabric; polypropylene long fiber filter fabric.

Filtration performance: polypropylene short fiber, short fiber, yarn spun with wool; Polypropylene fiber is a long fiber that forms a smooth yarn. Therefore, polypropylene short fiber industrial fabrics are more effective in surface fuzzing, powder filtration and pressure filtration than long fibers. Industrial polypropylene long fiber fabrics have a smooth surface and good air permeability.

4. The chemical name of the vinylon wastewater treatment filter fabric is polyvinyl alcohol, and its strength is lower than that of polyester, with a strength of only 3.52-5.72 Cndtex. The relative elongation at break is 12% to 25%. Poor elasticity, poor shape retention of the fabric, good wear resistance, 1-2 times higher durability than pure cotton. But one of the advantages is that it can withstand strong alkalis and has good moisture absorption, which makes it easy to combine with rubber. It is a good material used in the rubber industry. Its disadvantage is that it has low heat resistance, shrinkage when the temperature reaches 100 ° C, and is not resistant to acidity. Purpose: For manufacturers with strong alkalinity and the rubber industry.