Method for preparing composite biological stuffing on basis of modified shells

Abstract

The invention relates to a method for preparing composite biological stuffing on the basis of modified shells, and belongs to the technical field of biological stuffing. The method aims at solving the problems that existing fixed-type stuffing is small in specific surface area, low in biological film quantity and smooth in surface, biological films are prone to disengagement, and a stable and sustaining removing effect is difficult to maintain. The method comprises the steps that discarded shells are utilized, and the surfaces of the shells are modified through starch and ethylene glycol amine under the microwave action; then the shells are subjected to ball-milling activation, and the internal structure is modified through oscillation under ultrasound, the modified shells are loaded on loofah sponges, so that the microorganism biological film forming performance is improved, and disengagement is prevented; the loofah sponges loaded with the modified shells are mixed with auxiliaries, and the composite biological stuffing which has the advantages that the specific surface area is large, the biological films are not prone to disengagement, and the stable and sustaining removing effect can be maintained is prepared.

Description

technical field [0001] The invention relates to a method for preparing a composite biological filler based on modified shells, and belongs to the technical field of biological fillers. Background technique [0002] With the rapid growth of population and the advancement of industrialization, the pollution of water bodies is becoming more and more serious, and a new type of pollution has emerged that is composed of organic refractory substances, traditional ammonia nitrogen, and COD. The treatment effect of traditional sewage treatment methods on this type of sewage Generally bad. The use of microorganisms to treat polluted water bodies is a hot research direction in the field of water treatment today, and it is also a green, efficient, and non-secondary pollution treatment method. Among them, the biofilm method is to hang a film on the surface of the filler to degrade the pollutants in the sewage through the microbial group on the biofilm. [0003] The currently used biolo...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: in view of the current fixed filler with small specific surface area, less amount of biofilm, and smooth surface, the biofilm is easy to fall off, and it is difficult to maintain a stable and continuous removal effect. Starch and ethylene glycol amine, under the action of microwaves, modify the surface of the shell, then activate it by ball milling, and at the same time modify the internal structure by vibrating under ultrasonic waves, and then load it in the loofah to increase the microbial film-hanging ability and prevent it from falling off , and finally mix it with additives to prepare a compound biological seasoning with a large specific surface area, a biofilm that is not easy to fall off, and can maintain a stable and continuous removal effect