Heat-resistant flexible composite filter material prepared by blending melt-blown polypropylene with modified caustic-burned magnesium powder and used for sewage treatment and preparation method thereof

Abstract

The invention relates to a filter material used in sewage treatment and particularly relates to a heat-resistant flexible composite filter material prepared by blending melt-blown polypropylene with modified caustic-burned magnesium powder and used for sewage treatment and a preparation method thereof. The filter material is prepared from following raw materials, by weight: 5-8 parts of soft silica gel, 1-2 parts of nano clay, 2-3 parts of nano-hydroxyapatite, 12-15 parts of carbonized crop straw powder in 300-400 meshes, 30-40 parts of polypropylene, 15-20 parts of the caustic-burned magnesium powder in 200-300 meshes, 0.3-0.4 parts of sodium citrate, 0.5-0.8 parts of sodium carbonate, 2-3 parts of rosin and 1-2 parts of a silane coupling agent KH-550. In the invention, the modified conventional filter material composite body is supported onto the modified polypropylene master batch melt-blown fiber thin filaments to prepare the high-efficient filter material in a stereoscopic network structure. The filter material is convenient to use, is heat-resistant and fold-resistant, is stable in performance and is high-efficient and durable.

Description

technical field [0001] The invention relates to a filter material for sewage treatment, in particular to a tough composite filter material for sewage treatment which is melt-blown polypropylene mixed with modified dregs and a preparation method thereof. Background technique [0002] With the development of society and economy, water pollution is becoming more and more serious, the composition and content of pollutants are more difficult to control, and the requirements for water treatment technology are getting higher and higher. The original conventional treatment materials can no longer meet the needs of production. Therefore, it is necessary to improve the water quality treatment effect from the source, and improving the performance of the filter material is undoubtedly the most direct and efficient method. At present, the widely used filter materials mainly include quartz sand filter material, anthracite filter material, volcanic rock filter material and Plant fiber filt...

AI Technical Summary

Problems solved by technology

[0002] With the development of society and economy, water pollution is becoming more and more serious, the composition and content of pollutants are more difficult to control, and the requirements for water treatment technology are getting higher and higher. The original conventional treatment materials can no longer meet the needs of production. Therefore, it is necessary to improve the water quality treatment effect from the source, and improving the performance of the filter material is undoubtedly the most direct and efficient method. At present, the widely used filter materials mainly include quartz sand filter material, anthracite filter material, volcanic rock filter material and Plant fiber filter materials, etc. These filter materials have their own advantages and disadvantages when used. Generally speaking, improving the use efficiency of these filter materials and reducing production costs are still problems that need to be solved

[0003] Polypropylene melt-blown material is a new type of filter material, its fibers are entangled with each other, the structural gap is small, and it has a three-dimensional network structure, and the product is flexible and can be made into various shapes according to needs. It has low filter resistance, It has the advantages of high filtration efficiency, high output, low cost, and not easily damaged. Existing studies have shown that it has great potential in the field of sewage treatment. However, the filter material formed by pure polypropylene melt-blown has poor strength and durability, and the adsorption of dirt is poor. Ability to be improved