Suspended filler used for sewage treatment and preparation method thereof

Abstract

The invention provides suspended filler used for sewage treatment and a preparation method thereof. The preparation method comprises the following steps: (1) uniformly mixing the following componentsin parts by mass: 4-10 parts of activated carbon powder, 8-11 parts of reclaimed rubber powder, 1-3 parts of purified diatomite, 1-7 parts of maleic anhydride, 0.3-0.9 part of dicumyl peroxide and 0.5-2 parts of biological enzyme, then adding 75-80 parts of high-density polyethylene, and stirring at a high speed; (2) adding the mixed materials into a suspended filler mold, and molding; (3) settingthe molded suspended filler, cooling, carrying out mechanical perforation, and cutting by virtue of a gear; and (4) finally adding a silk-like fiber carrier at the center. The suspended filler provided by the invention has the advantages that enhancement ingredients are added for biological enzyme, hydrophilic modification is carried out, catalytic action of the biological enzyme and nitrification of nitrifying bacteria are promoted, and hydrophilic performance of the filler and nitrification ability of the nitrifying bacteria are improved, so that microorganisms can be adsorbed on the fillereasily, and capabilities of the microorganisms in decomposition on pollutants in water and removal of ammonia nitrogen are obviously improved.

Description

technical field [0001] The invention belongs to the field of domestic sewage treatment, and in particular relates to a suspended filler for sewage treatment and a preparation method thereof. Background technique [0002] In the biofilm method, the filler is one of the key technologies for wastewater treatment as a habitat for microorganisms, and its performance directly affects the treatment effect and investment cost. Since the 1970s, scientific researchers have continuously promoted the development of the biofilm method by improving the filler as a breakthrough. At present, the commonly used fillers in China are fixed fillers such as honeycomb fillers, soft fillers, semi-soft fillers and suspension fillers. However, these fillers often encounter problems such as blockage, agglomeration, and uneven air and water distribution during use, which affects effect of biological treatment. And the above-mentioned fillers all need to be installed on the auxiliary bracket, which ca...

AI Technical Summary

Problems solved by technology

There are many filler products on the market at present, but there are certain problems in practical applications, such as small specific surface area, poor hydrophilicity, long film-hanging and start-up cycle, and easy biofilm falling off, etc.

Many companies try to increase the specific surface area of ​​the filler and improve the treatment effect from the improvement and complexity of the structure. The main problem is that the more complex the filler structure, the higher the cost and the lower the production efficiency.

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