Large biofilm culturing amount MBBR suspended biofilm carrier and preparing method thereof

Abstract

The invention discloses a large biofilm culturing amount MBBR suspended biofilm carrier and a preparing method thereof. The large biofilm culturing amount MBBR suspended biofilm carrier is prepared from, by weight, 65-75 parts of high density polyethylene, 5-15 parts of slaked lime, 5-20 parts of Dow powdered activated carbon, 6-10 parts of light calcium carbonate, 3-5 parts of maleic anhydride, 0.2-0.6 part of dicumyl peroxide, 1.5-3 parts of gelatin, 1-2 parts of chitin and 0.5-2 parts of magnetic powder; the density of the large-biofilm-culturing-amount MBBR suspended biofilm carrier is 0.96-0.98 g/cm<3>. The large-biofilm-culturing-amount MBBR suspended biofilm carrier is high in biofilm culturing speed, the biofilm does not easily shed, the treatment efficiency is high, and the biofilm carrier is applicable to treating low concentration organic matter, ammonia nitrogen and low concentration organic wastewater; the biofilm carrier has very high hydrophilicity and biocompatibility,the carrier itself has very high adsorption strength on biofilm and is beneficial to intercepting and accumulating biomass on the carrier.

Description

technical field [0001] The invention relates to a MBBR suspended biological filler with high film-hanging capacity, which belongs to the sewage treatment in the discipline of environmental engineering [0002] technology field. Background technique [0003] Biofilm sewage treatment is a technology that makes microorganisms such as nitrifying bacteria and denitrifying bacteria fix on the surface of the filler and grow in the form of a film to achieve sewage treatment. Generally, it can be divided into biological filter, biological turntable, biological contact oxidation method, etc. Although their structures are very different, their basic principles are the same, that is, through the contact between wastewater and biofilm, the mass transfer of solid-liquid two-phase is carried out. Biofilm biodegrades organic matter, enabling wastewater to be purified. The biofilm method has a high treatment efficiency and has obvious effects on water bodies slightly polluted by organic ma...

AI Technical Summary

Problems solved by technology

[0004] The main problems are as follows: On the one hand, problems such as clogging, agglomeration, and hardening are often encountered in the use of fillers, which affect the biological treatment effect

And the above-mentioned fillers all need to be installed on the auxiliary support, causing many inconveniences such as filler installation and replacement; There are deficiencies in the speed, the amount of film formation and the tightness between the film and the filler; secondly, due to the low pollution load, the growth of microorganisms is limited, and the growth rate is slow, which also makes it difficult for biofilm formation

Images