Biodegradable foaming material and preparation method thereof

Abstract

The invention provides a biodegradable foaming material and a preparation method thereof. The biodegradable foaming material is prepared from, by weight, 100 parts of biodegradable polymer A and a10-40 parts of biodegradable polymer B, the opening percentage of the foaming material is 50%-90%, and the specific surface area is 100-900 m<2> / g. The preparation method of the biodegradable foaming material is simple, and the biodegradable foaming material is stable in structure, high in porosity, large in specific surface area, high in mechanical strength and good in impact resistance property andcan serve as a carrier for water treatment. In addition, the biodegradable foaming material provides a solid carbon source for microbes, especially for denitrifying bacteria, the growth and nitrogen removal effects of the denitrifying bacteria are improved, and meanwhile secondary pollution due to increase of the organic content in water is not caused.

Description

technical field

[0001] The invention belongs to the field of polymer materials, and more specifically relates to a biodegradable foaming material and a preparation method thereof. Background technique

[0002] In recent years, with the acceleration of industrialization and the increase and expansion of the population and the scope of population activities, human demand for water resources is increasing; on the other hand, industrialization and human activities will cause serious pollution to scarce water resources, so , how to effectively control water pollution has become an important issue in the 21st century.

[0003] Wastewater treatment technology can be divided into physical method, chemical method and biological method according to its principle of action. The physical method is to use physical action to separate the pollutants that are mainly in the state of suspended solids in the wastewater; the chemical method is to use chemical reactions to separate and recover ...

Images