What are the characteristics of absorbent cotton filter element used in industrial wastewater purification treatment?

Absorbent cotton filter element is used to purify industrial wastewater. Its core features are high filtration accuracy, low cost and biodegradability, but at the same time it has the limitations of poor corrosion resistance and easy blockage.

First, the core advantages

Filtering accuracy and efficiency: Absorbent cotton fibers are loose in structure and slender, which can effectively intercept suspended solids, colloidal particles and some organic impurities in wastewater. The filtering accuracy can reach micron level, and the capturing efficiency of fine particles is high.

Friendly material characteristics: the raw material is natural cotton, which has no oil residue after degreasing treatment and will not release additional pollutants into wastewater; And can be biodegraded after being discarded, thereby causing little secondary pollution to the environment and meeting the requirements of environmental protection.

Cost and operating threshold: absorbent cotton is easy to obtain, and the manufacturing cost of filter element is much lower than that of metal, ceramic or polymer synthetic material filter element; At the same time, the installation and replacement process is simple without complicated equipment, which is suitable for small and medium-sized enterprises or temporary emergency treatment scenarios.

Second, the main limitations

Poor corrosion resistance: Absorbent cotton is essentially cellulose, which cannot tolerate strong acid, strong alkali or strong oxidizing industrial wastewater (such as electroplating wastewater and chemical wastewater), and it is easy to dissolve or decompose after contact, resulting in filtration failure.

Weak anti-clogging ability: the fiber gap is easily blocked by viscous impurities or high-concentration suspended solids in wastewater, so it is necessary to replace the filter element frequently, which not only increases the maintenance frequency, but also may affect the continuous operation efficiency of wastewater treatment.

Limited temperature resistance: it can only be used at normal temperature (usually not more than 60℃), and it cannot adapt to high-temperature industrial wastewater (such as high-temperature drainage in printing and dyeing and metallurgy industries). High temperature will lead to fiber structure damage and loss of filtration function.

III. Applicable and Unsuitable Scenarios

Specific description of scene type

Suitable for treating wastewater with neutral and low concentration of suspended solids, such as cooling wastewater from mechanical processing, food processing wastewater and conventional cleaning wastewater.

Not applicable scenario 1. Wastewater containing strong acid, strong alkali and strong oxidant;

2. Industrial wastewater with high temperature (> 60℃) or high viscosity;

3. Wastewater containing a large number of soluble pollutants (such as heavy metal ions and high-concentration organic matter).