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A biological sponge iron modified chitosan high-efficiency heavy metal wastewater treatment agent loaded with active bacteria and its preparation method

A wastewater treatment agent, chitosan technology, applied in the direction of adsorption water/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problems of chitosan is not easy to recycle, relatively small molecular weight, direct application limitations, etc., to improve Effect of duty ratio, improvement of adsorption capacity, improvement of activity and high efficiency

Active Publication Date: 2017-12-08
南通昆仑空调有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Chitosan will form a cationic polyelectrolyte with high charge density in acidic solution, which shows good flocculation performance and can be widely used in the field of water treatment. However, chitosan is not easy to recycle, its relative molecular weight is small, and its bridging ability is poor and other deficiencies, so that its direct application is limited, so the modification of chitosan has become a research hotspot in the field of high-efficiency water treatment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A biological sponge iron modified chitosan high-efficiency heavy metal wastewater treatment agent loaded with active bacteria, the composition includes the following raw materials by weight (kg): chitosan 5, biological sponge iron 40, polyvinyl alcohol nanofiber 30 , cationic polyacrylamide 4, large molecular weight pullulan 2, phenylalanine 6, yeast cell wall 2, active bacteria 1, sodium lignosulfonate 3, polyepoxysuccinic acid 3, appropriate amount of deionized water, appropriate amount of water.

[0017] A preparation method of a biological sponge iron modified chitosan high-efficiency heavy metal wastewater treatment agent loaded with active bacteria, comprising the following steps:

[0018] (1) Mix chitosan and polyepoxysuccinic acid, add 33 times the total weight of deionized water, mix and stir at 55°C for 2.5 hours until uniform, add biological sponge iron and yeast cell wall and stir evenly, and then use Vacuum centrifugal dehydration until the moisture conten...

Embodiment 2

[0023] A bio-sponge iron modified chitosan high-efficiency heavy metal wastewater treatment agent loaded with active bacteria, the composition includes the following raw materials by weight (kg): chitosan 5.5, bio-sponge iron 47.5, polyvinyl alcohol nanofibers 25 , cationic polyacrylamide 3.5, large molecular weight pullulan 2.5, phenylalanine 5.5, yeast cell wall 2.5, active bacteria 1.5, sodium lignosulfonate 2.5, polyepoxysuccinic acid 3.5, appropriate amount of deionized water, appropriate amount of water.

[0024] A preparation method of a biological sponge iron modified chitosan high-efficiency heavy metal wastewater treatment agent loaded with active bacteria, comprising the following steps:

[0025] (1) Mix chitosan and polyepoxysuccinic acid, add 38 times the total weight of deionized water, mix and stir at 55°C for 2.5 hours until uniform, add biological sponge iron and yeast cell wall and stir evenly, and then use Vacuum centrifugal dehydration until the moisture c...

Embodiment 3

[0030] A biological sponge iron modified chitosan high-efficiency heavy metal wastewater treatment agent loaded with active bacteria, the composition includes the following raw materials by weight (kg): chitosan 6, biological sponge iron 55, polyvinyl alcohol nanofiber 20 , cationic polyacrylamide 3, large molecular weight pullulan 3, phenylalanine 5, yeast cell wall 2, active bacteria 1-2, sodium lignosulfonate 2, polyepoxysuccinic acid 4, appropriate amount of deionized water , the right amount of water.

[0031] A preparation method of a biological sponge iron modified chitosan high-efficiency heavy metal wastewater treatment agent loaded with active bacteria, comprising the following steps:

[0032] (1) Mix chitosan and polyepoxysuccinic acid, add 44 times the total weight of deionized water, mix and stir at 55°C for 2.5 hours until uniform, add biological sponge iron and yeast cell wall and stir evenly, and then use Vacuum centrifugal dehydration until the moisture conte...

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PUM

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Abstract

The invention discloses a biological sponge iron modified chitosan high-efficiency heavy metal wastewater treatment agent loaded with active bacteria and a preparation method. The composition comprises the following raw materials in parts by weight: chitosan 5-6, biological sponge iron 40 ‑55, polyvinyl alcohol nanofiber 20‑30, cationic polyacrylamide 3‑4, large molecular weight pullulan 2‑3, phenylalanine 5‑6, yeast cell wall 2‑3, active bacteria 1‑2, Sodium lignosulfonate 2‑3, polyepoxysuccinic acid 3‑4, etc. The present invention adopts bio-sponge iron to modify chitosan, which improves the adsorption capacity on the one hand, provides a good living environment for active bacteria, improves the activity and high efficiency of active bacteria in the treatment of heavy metal wastewater, and at the same time, The yeast cell wall has the dual functions of providing nutrition for active bacteria and absorbing heavy metals in water. The polyvinyl alcohol nanofibers used can effectively increase the duty cycle of the granule preparation and improve the adsorption efficiency.

Description

technical field [0001] The invention relates to the technical field of water treatment agents, in particular to a biological sponge iron modified chitosan high-efficiency heavy metal wastewater treatment agent loaded with active bacteria and a preparation method. Background technique [0002] Chitosan will form a cationic polyelectrolyte with high charge density in acidic solution, which shows good flocculation performance and can be widely used in the field of water treatment. However, chitosan is not easy to recycle, its relative molecular weight is small, and its bridging ability is poor Such deficiencies limit its direct application, so the modification of chitosan has become a research hotspot in the field of high-efficiency water treatment. [0003] New functional groups can be grafted on the surface of chitosan to increase the density of adsorption active points, thereby improving its adsorption capacity. Chitosan can also be compounded with other substances to improv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52C02F1/28
Inventor 金林墨
Owner 南通昆仑空调有限公司