Environmental-friendly biological stuffing and method of producing same

Abstract

The invention discloses environmental-friendly biological stuffing which is made of raw material of carbonized rice husks, thereby having low cost and wide source of raw material and being easy to process. The environmental-friendly biological stuffing has large specific surface area, high porosity, large biomass of per unit volume and high pollutant processing load; in addition, the environmental-friendly biological stuffing is similar to water in the specific gravity, thereby being easy to suspend by consuming less power; the environmental-friendly biological stuffing is suitable for the growth and the propagation of microorganisms and is easy to form film; and the environmental-friendly biological stuffing has small stacking density, thereby being hard to compact. Compared with the prior stuffing, the cost of the environmental-friendly biological stuffing is reduced by 60-80 percent, and the specific surface area is increased by over 2000m<2>/m<3>. The environmental-friendly biological stuffing can be widely used for treating waste water and gases.

Description

technical field [0001] The invention relates to a biological filler. Background technique [0002] Biological treatment plays an important role in today's various types of wastewater treatment. The filler as a microbial carrier is one of the key products of biological treatment technology, and its performance is directly related to the treatment effect, the length of service life, and the cost of the project. [0003] Biological fillers used in wastewater and waste gas treatment must have the following characteristics: [0004] 1) Appropriate specific gravity; 2) Sufficient mechanical strength; 3) Sufficient chemical stability; 4) Larger specific surface area; 5) Larger internal and external porosity; 6) Small bulk density, etc. [0005] The current biological fillers are generally made of polyethylene, polypropylene, polyvinyl chloride and other materials by injection molding or thermosynthesis. Although this type of polymer has good molding processability, it is easy to...

AI Technical Summary

Problems solved by technology

Although this type of polymer has good molding processability, it is easy to make fillers with complex shapes and large specific surface area, but these materials have no internal pore structure, which is no