A kind of immobilized biological reaction filter plate and its preparation method and application

Abstract

The invention discloses an immobilized biological reaction filter plate and its preparation method and application. The immobilized biological reaction filter plate includes a deposition glass plate and microorganisms, and adopts a porous deposition glass plate formed after glass droplet cooling and deposition as a supporting carrier. The specific surface area under the same volume is large, and the contact area with the substrate liquid after loading the PVA film is also large. The microorganisms are fixed in the PVA film layer, the bioavailability is greatly improved, and the treatment efficiency is improved. The pore size of the deposition glass plate is moderate, taking into account the fluidity and hydraulic retention time of permeation filtration, and reducing the processing time per unit volume of substrate while ensuring the elimination rate of ammonia nitrogen. The modified PVA membrane has a stable effect of microorganism immobilization, and has little influence on the activity of microorganisms. When the immobilized biological reaction filter plate is applied to sewage treatment, the number of filter plate layers can be flexibly adjusted according to the ammonia nitrogen level of the sewage, the treatment intensity can be changed, unnecessary waste can be reduced, high-ammonia nitrogen sewage can be treated efficiently, and treatment costs can be reduced.

Description

technical field [0001] The invention relates to the field of immobilized microorganisms, in particular to an immobilized biological reaction filter plate and its preparation method and application. Background technique [0002] Microbial immobilization technology refers to the biological immobilization technology that uses physical or chemical methods to immobilize dominant microorganisms on a specific carrier at high density and maintain activity for a certain period of time, and can also meet specified requirements under suitable growth conditions. The basic starting point of microbial immobilization technology is to improve the efficiency and stability of the treatment process based on the dominant microbial population, increase the microbial density per unit volume, and eliminate the problem of microbial loss. Compared with the traditional activated sludge method, which has low microbial biomass, prone to sludge swelling and loss, and poor adaptability to wastewater qual...

AI Technical Summary

Problems solved by technology

Compared with natural polymer gel carrier, the mechanical strength of immobilized particles made of organic polymer gel carrier is larger than that of natural polymer gel carrier, but its mass transfer performance is not as good as that of natural polymer gel Immobilized particles made of carriers, and after embedding, they are more active against microorganisms, which can easily cause the inactivation of immobilized microorganisms

[0006] In addition, most of the traditional embedded and immobilized microorganisms are porous pellet preparations with small specific surface area and small contact area with the substrate, and most of the microorganisms are embedded and immobilized inside the polymer carrier, and the treatment effect is strongly dependent on or Limited by the mass transfer performance of the carrier, the mass transfer performance of the embedding sphere formed by solidification and crosslinking of the polymer carrier is poor, and the microbial treatment efficiency cannot be maximized

At the same time, the continuous treatment of substrate solution per unit volume requires a large amount of immobilized microbial preparations as fillers, resulting in a large hydraulic retention time, slow treatment effect and low efficiency.

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