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Application of Modified Mussel Shell Packing Biological Aerated Filter for Sewage Treatment

A mussel shell modification technology, applied in sustainable biological treatment, biological water/sewage treatment, aerobic process treatment, etc., to achieve strong operability, convenient operation, and good environmental benefits

Active Publication Date: 2021-11-09
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few reports on the application of modified mussel shells as fillers in biological aerated filters to treat domestic sewage

Method used

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  • Application of Modified Mussel Shell Packing Biological Aerated Filter for Sewage Treatment
  • Application of Modified Mussel Shell Packing Biological Aerated Filter for Sewage Treatment
  • Application of Modified Mussel Shell Packing Biological Aerated Filter for Sewage Treatment

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A preparation method of modified mussel shell filler, comprising the following steps:

[0032] S1. Preparation of magnetic nanoparticles: In a nitrogen atmosphere, 1g of ferric chloride hexahydrate and 2g of ferrous chloride tetrahydrate were heated up to a reaction temperature of 50°C, and then 10mL of 20wt% ammonia water was added dropwise, and reacted at a constant temperature under nitrogen protection for 2h. to room temperature, the synthesized magnetic nanoparticles were washed three times with deionized water, separated by a magnet, and set aside;

[0033] S2. Pre-treatment of mussel shells: clean the mussel shells brought back from the farm, remove the remaining shell meat, silk, and moss on the surface, dry them at 100°C, and put them into a high-temperature resistance furnace for high-temperature carbonization under nitrogen protection. Raise the temperature by 50°C every 10 minutes, up to 800°C, cool down after carbonization for 30 minutes, grind finely, and ...

Embodiment 2

[0037] A preparation method of modified mussel shell filler, comprising the following steps:

[0038] S1. Preparation of magnetic nanoparticles: In a nitrogen atmosphere, 1g of ferric chloride hexahydrate and 3g of ferrous chloride tetrahydrate are heated to a reaction temperature of 60°C, and then 30mL of 24wt% ammonia water is added dropwise. to room temperature, the synthesized magnetic nanoparticles were washed three times with deionized water, separated by a magnet, and set aside;

[0039] S2. Pre-treatment of mussel shells: clean the mussel shells brought back from the farm, remove the remaining shell meat, silk, and moss on the surface, dry them at 100°C, and put them into a high-temperature resistance furnace for high-temperature carbonization under nitrogen protection. Raise the temperature by 50°C every 10 minutes, up to 800°C, cool down after carbonization for 30 minutes, grind finely, and set aside;

[0040] S3. Preparation of magnetic mussel shells: Add 2g of mag...

Embodiment 3

[0043] A preparation method of modified mussel shell filler, comprising the following steps:

[0044] S1. Preparation of magnetic nanoparticles: 1g of ferric chloride hexahydrate and 2.5g of ferrous chloride tetrahydrate were heated to a reaction temperature of 55°C in a nitrogen atmosphere, then 20mL of 22wt% ammonia water was added dropwise, and reacted at constant temperature for 3.5h under nitrogen protection , down to room temperature, the synthesized magnetic nanoparticles were washed three times with deionized water, separated by a magnet, and set aside;

[0045] S2. Pre-treatment of mussel shells: clean the mussel shells brought back from the farm, remove the remaining shell meat, silk, and moss on the surface, dry them at 100°C, and put them into a high-temperature resistance furnace for high-temperature carbonization under nitrogen protection. Raise the temperature by 50°C every 10 minutes, up to 800°C, cool down after carbonization for 30 minutes, grind finely, and ...

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Abstract

The present invention proposes a preparation method of a modified mussel shell filler, comprising the following steps: S1. preparation of magnetic nanoparticles; S2. pretreatment of mussel shells: cleaning the mussel shells, drying, carbonizing under nitrogen protection at high temperature, and researching Fine, spare; S3. Preparation of magnetic mussel shells: Add magnetic nanoparticles and ammonia water to water respectively, add dropwise silane coupling agent after heating up, nitrogen protection constant temperature reaction, add mussel shell powder, continue the reaction, drop to room temperature, the product Wash three times with deionized water, separate by magnet, and set aside; S4. Preparation of modified mussel shell filler: add magnetic mussel shell to water, stir evenly, add organic acid, after reaction, wash the product three times with water and ethanol, and magnetically separate , dried, and finely ground to prepare the modified mussel shell filler. The modified mussel shell filler of the invention has better purification performance for sewage in the biological aerated filter tank, simple modification conditions, convenient operation and strong operability.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a modified mussel shell filler, a preparation method thereof, and an application of an aerated biological filter for sewage treatment. Background technique [0002] With the development of science and technology, industrial and domestic water consumption is increasing day by day, but water resources are limited, so sewage recycling is an extremely necessary process, which can relieve water pressure to a certain extent. In the field of sewage treatment, in addition to traditional physical methods, including adsorption method, air flotation separation method, electromagnetic effect method, etc., there are also physical chemical methods and chemical oxidation methods. However, the above methods cannot achieve good results. Therefore, in order to improve the quality of water treatment, the biofilm method has been rapidly developed. The main principle is to form a film throug...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/06C02F3/10C02F101/10
CPCC02F3/06C02F3/107C02F2101/105C02F2101/16C02F2209/08Y02W10/10
Inventor 刘梅陈庆国郝焱刘雨薇
Owner ZHEJIANG OCEAN UNIV
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