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Microbial filler for modifying waste lotus seedpod shells and preparation method thereof

A technology of lotus husks and microorganisms, applied in chemical instruments and methods, biological water/sewage treatment, water treatment parameter control, etc., can solve the problems such as failure to obtain resource utilization, good biodegradability, and small specific surface area, etc. Achieve the effect of realizing resource utilization, increasing specific surface area and long service life

Inactive Publication Date: 2020-07-28
湖南中车环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the lotus shells are discarded as waste and have not been utilized as resources, resulting in a waste of resources
As a natural organic filler, lotus shell has the characteristics of good hydrophilicity and biocompatibility, but it also has defects such as short service life due to good biodegradability, low strength, small specific surface area, and low porosity. Practical use of it as a biofiller for biofilm processes

Method used

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  • Microbial filler for modifying waste lotus seedpod shells and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Place the lotus shell in an ultrasonic cleaner filled with pure water, and ultrasonically clean it for 2 hours.

[0021] (2) Place the lotus shell after ultrasonic cleaning in a vacuum oven at 80°C, and dry it in vacuum for 48 hours.

[0022] (3) Put the vacuum-dried lotus shell into the tube furnace, 2 Heated to 600°C at a heating rate of 5°C / min in the atmosphere, then kept the temperature for 120 minutes, cooled to room temperature, and took out the product from the tube furnace, which was recorded as carbonized shower shell.

[0023] (4) Soak the carbonized lotus shells in NH 4 h 2 PO 4 solution in the beaker, NH 4 h 2 PO 4 The concentration is 0.2mol / L, after soaking for 2 hours, put the soaked carbonized shower shell into the tube furnace, 2 Heated to 600°C at a heating rate of 5°C / min in the atmosphere, then kept the temperature for 120 minutes, cooled to room temperature, and took out the product from the tube furnace, which was recorded as porous car...

Embodiment 2

[0026] (1) Place the lotus shell in an ultrasonic cleaner filled with pure water, and ultrasonically clean it for 2 hours.

[0027] (2) Place the lotus shell after ultrasonic cleaning in a vacuum oven at 80°C, and dry it in vacuum for 48 hours.

[0028] (3) Put the vacuum-dried lotus shell into the tube furnace, 2 Heated to 800°C at a heating rate of 10°C / min in the atmosphere, then kept the temperature for 120 minutes, cooled to room temperature, and took out the product from the tube furnace, which was recorded as carbonized shower shell.

[0029](4) Soak the carbonized lotus shell in NH 4 h 2 PO 4 solution in the beaker, NH 4 h 2 PO 4 The concentration is 0.4mol / L, after soaking for 2 hours, put the soaked carbonized shower shell into the tube furnace, 2 Heated to 800°C at a heating rate of 10°C / min in the atmosphere, then kept the temperature for 120 minutes, cooled to room temperature, took out the product from the tube furnace, and recorded it as porous carbonized...

Embodiment 3

[0032] (1) Place the lotus shell in an ultrasonic cleaner filled with pure water, and ultrasonically clean it for 2 hours.

[0033] (2) Place the lotus shell after ultrasonic cleaning in a vacuum oven at 60°C, and dry it in vacuum for 48 hours.

[0034] (3) Put the vacuum-dried lotus shell into the tube furnace, 2 In the atmosphere, heat up to 1000°C at a heating rate of 20°C / min, then hold the temperature for 120 minutes, cool to room temperature, take out the product from the tube furnace, and record it as carbonized shower shell.

[0035] (4) Soak the carbonized lotus shell in NH 4 h 2 PO 4 solution in the beaker, NH 4 h 2 PO 4 The concentration is 0.6mol / L, after soaking for 2 hours, put the soaked carbonized shower shell into the tube furnace, 2 In the atmosphere, heat up to 1000°C at a heating rate of 20°C / min, then hold the reaction for 120min, cool to room temperature, take out the product from the tube furnace, and record it as porous carbonized shower shell. ...

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Abstract

The invention provides a microbial filler for modifying waste lotus seedpod shells and a preparation method of the microbial filler. The modified waste lotus seedpod shell microbial filler is preparedby removing fruits of lotus seedpods and then performing modified processing. The preparation method of the modified waste lotus seedpod shell microbial filler comprises the following steps: cleaninglotus seedpod shells, drying the lotus seedpod shells, heating to form carbonized lotus seedpod shells, soaking in a NH4H2PO4 solution, heating again to form porous carbonized lotus seedpod shells, soaking in a Ti(SO4)2 solution, adding a Na2CO3 solution, carrying out ultrasonic reaction, and heating for the third time to form the microbial filler of the modified waste lotus seedpod shells. According to the microbial filler for modifying the waste lotus seedpod shells and the preparation method of the microbial filler, provided by the invention, the defects of good biodegradability, short service life, low strength, small specific surface area, low porosity and the like when the lotus seedpod shell is used as the filler are overcome.

Description

technical field [0001] The invention relates to the field of biological fillers, in particular to a microbial filler for modifying waste lotus shells and a preparation method thereof. Background technique [0002] Biofilm is a commonly used process in sewage treatment. Through the contact between the sewage and the biofilm, the microorganisms in the membrane are used to degrade the organic matter in the sewage, so that the sewage is purified, and the microorganisms in the biofilm continue to grow and reproduce. The key to the biofilm method is to form a biofilm with excellent performance, and as the core part of the biofilm method, the filler (or carrier) that provides the biofilm with a fixed growth and attachment is directly affected by its performance and restricts the treatment efficiency of the process. Biological characteristics are the main performance that the filler should have as the carrier of microorganisms in the biofilm reactor. [0003] At present, the fille...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00C02F3/34
CPCC02F3/00C02F3/34C02F2209/08C02F2209/14C02F2209/16
Inventor 王雨露陈小奇张玉红陈来福杨振兴
Owner 湖南中车环境工程有限公司
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