Biological filler bag and application thereof in sewage treatment

Abstract

The invention provides a biological filler bag for sewage treatment and application thereof. The biological filler bag is made by the following steps: filling a filler substrate in a fiber cloth bag made of fiber cloth, and sealing. The main raw material of the fiber cloth is a polyester fiber, a polypropylene fiber or a mixture thereof; and the diameter of the polyester fiber or polypropylene fiber is 2-8 dtex, and the length is 30-86mm. The biological filler bag provided by the invention has abundant pore sizes and large specific area, and thus, can provide a habitat for aquatic organisms and promote mass proliferation of microbes; and the biological filler bag can be used for growing aquatic plants, and is beneficial to the growth of aquatic animals. The biological filler bag also has the function of filtering impurities in a water body. The biological filler bag is applicable to sewage treatment, and has the characteristics of favorable film forming property, multiple biologic species and favorable pollutant removal effect (especially for N and P in a water body).

Description

(1) Technical field [0001] The invention belongs to the field of sewage biochemical treatment, and relates to a biological filler for water treatment. (2) Background technology [0002] According to the theory and application of immobilized microorganisms and biofilm methods, the water treatment industry has developed many types of biological fillers. These fillers have different functions and effects due to differences in materials, shapes, quality, and specific gravity. For example: ceramsite, quartz sand, and rare earth porcelain sand are all granular, with good filtration effect and easy fixation in water, but poor fixation effect on microorganisms; activated carbon and diatomite have abundant micropores, large surface area, and adsorption The performance is good, but the filtration effect is not ideal; manganese sand, magnetite, etc. have good performance in removing iron and manganese, and the filtration effect is good, but the biocompatibility is poor; humus, peat soi...

AI Technical Summary

Problems solved by technology

For example: ceramsite, quartz sand, and rare earth porcelain sand are all granular, with good filtration effect and easy fixation in water, but poor fixation effect on microorganisms; activated carbon and diatomite have abundant micropores, large surface area, and adsorption The performance is good, but the filtration effect is not ideal; manganese sand, magnetite, etc. have good performance in removing iron and manganese, and the filtration effect is good, but the biocompatibility is poor; humus, peat soil, etc. contain a lot of organic matter, and the biocompatibility is good , Can effectively immobilize a large number of microorganisms, but it is not easy to fix, easy to block, and poor filtration effect in water bodies; while synthetic material fillers have the advantages of strong chemical stability, corrosion resistance, variable pores and non-blocking, but poor biological affinity

And different fillers are not easy to use in combination. For example, quartz sand is granular and dense, and can stay in water, while humus is easily washed away by water. It is difficult to use the two together.

Images