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Fluidized bed filler with reinforced denitrification function and preparation method thereof

A fluidized bed and functional technology, applied in the direction of chemical instruments and methods, sustainable biological treatment, water pollutants, etc., can solve the problems of inability to enhance the removal efficiency of total nitrogen in a targeted manner, and achieve enhanced removal efficiency of total nitrogen and enhanced contact and high mass transfer efficiency, total nitrogen removal efficiency

Inactive Publication Date: 2019-05-03
常功法
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The filler still increases the bioadhesion performance of the filler by improving the hydrophilicity and bio-affinity of the filler material, and cannot directionally enhance the removal efficiency of total nitrogen.

Method used

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  • Fluidized bed filler with reinforced denitrification function and preparation method thereof
  • Fluidized bed filler with reinforced denitrification function and preparation method thereof
  • Fluidized bed filler with reinforced denitrification function and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A fluidized bed filler with enhanced denitrification function, the components are as shown in Table 1, all in parts by weight:

[0049] Table 1

[0050]

[0051] The preparation method of the above-mentioned fluidized bed packing with enhanced denitrification function comprises the following steps:

[0052] (1) Place the above-mentioned raw materials in a mixer and fully mix them to obtain mixed raw materials;

[0053] (2) Put the mixed raw material prepared in step (1) into a 75-type single-screw extruder, heat it to 180-190° C., and extrude it through an extrusion die to obtain a cylindrical filler rod with a diameter of 25 mm;

[0054] (3) Cut the cylindrical filler rod prepared in step (2) into filler particles with a length of 8 mm.

Embodiment 2

[0056] The fluidized bed filler with enhanced denitrification function as described in Example 1, the difference is that the components are as shown in Table 2, all in parts by weight:

[0057] Table 2

[0058]

Embodiment 3

[0060] The fluidized bed filler with enhanced denitrification function as described in Example 1, the difference is that the components are as shown in Table 3, all in parts by weight:

[0061] table 3

[0062]

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Abstract

The invention relates to fluidized bed filler with a reinforced denitrification function and a preparation method thereof. The fluidized bed filler comprises the following components: a light framework, a hard slow-release carbon source, an ammonia nitrogen enriching agent, a phosphorus enrichment agent and a biological enzyme activity increasing agent. According to the invention, components of sewage to be treated is combined for the first time, and components of suspended filler is designed, so that suspended filler suitable for a moving bed biofilm reactor (MBBR) process is prepared. The hard slow-release carbon source is added into the components, so that supply capacity of a denitrification carbon source can be automatically matched under great fluctuation of the C / N ratio in wastewater, and total nitrogen removal efficiency can be ensured to be high and stable; and the ammonia nitrogen enriching agent is added, so that ammonia nitrogen in the wastewater is enriched around the filler, the contact and mass transfer efficiency of the ammonia nitrogen with a biological membrane are enhanced, and the total nitrogen removal efficiency is enhanced.

Description

technical field [0001] The invention relates to a fluidized bed filler with enhanced denitrification function and a preparation method thereof, belonging to the technical field of sewage treatment. Background technique [0002] Nitrogen is one of the main causes of eutrophication in water bodies, and denitrification treatment must be carried out before sewage is discharged. Sewage denitrification mainly relies on biological methods, the core of which is the two interrelated biological enzymatic reactions of nitrification and denitrification. In the nitrification reaction, oxygen oxidizes ammonia nitrogen to nitrate nitrogen under the catalysis of biological enzymes secreted by nitrifying bacteria; Escape from the water to achieve the purpose of sewage denitrification. [0003] If we can try to increase the number of microorganisms, and then increase the number of biological enzymes, the efficiency of nitrification and denitrification can be improved, and the degree of deni...

Claims

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Application Information

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IPC IPC(8): C02F3/10C02F3/12C02F101/16
CPCY02W10/10
Inventor 常功法
Owner 常功法
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