Method for preparing composite biological stuffing on basis of modified shells

A technology of biological fillers and shells, which is applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc. and other problems, to achieve the effects of good biocompatibility, rough surface and large amount of microbial film hanging.

Inactive Publication Date: 2016-06-08
TRUSYN CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: in view of the current fixed filler with small specific surface area, less amount of biofilm, and smooth surface, the biofilm is easy to fall off, and it is difficult to maintain a stable and continuous removal effect. Starch and ethylene glycol amine, under the action of microwaves, modify the surface of the shell, then activate it by ball mil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] Take discarded shells from seafood processing plants, remove the remaining meat and attachments on the shells, rinse them with water, and then put them in a muffle furnace at 300°C for 30 minutes. After the end, take out the shells and put them into a crushed Pulverize in the machine, sieve to obtain 40 mesh shell powder, then mix the shell powder, starch and 15% diethanolamine aqueous solution in a container according to the mass ratio of 3:2:1; after the above mixing is completed, , move the container to a microwave reactor at 45°C for microwave-assisted reaction, perform vacuum filtration after overnight, rinse the filter cake 3 times with absolute ethanol, then put it and lignite with 10% shell mass in a ball mill, and grind the medium Grind 5 zirconia pellets for 12 hours with a rotating speed of 60r / min, then put the powder obtained after grinding into a container, add a 10% mass fraction of sodium hydroxide solution to soak the powder; move the mixture in the abov...

example 2

[0020] Take discarded shells from the seafood processing factory, remove the meat and attachments remaining on the shells, rinse them with water, and then put them in a muffle furnace at 400°C for 40 minutes. After the end, take out the shells and put them into a crushed Pulverize in the machine, sieve to obtain 40 mesh shell powder, then mix the shell powder, starch and diethanolamine aqueous solution with a mass fraction of 15-18% in a container according to the mass ratio of 3:2:1; After the end, move the container to microwave-assisted reaction in a microwave reactor at 45°C, carry out vacuum filtration after overnight, use absolute ethanol to rinse the filter cake 5 times, and then put it and lignite with shell quality 12% into a ball mill, The grinding medium is 5 small zirconia balls, grind at a speed of 60r / min for 15h, then put the powder obtained after grinding into a container, add a 10% mass fraction of sodium hydroxide solution to soak the powder; put the mixture i...

example 3

[0023]Take discarded shells from seafood processing plants, remove the remaining meat and attachments on the shells, rinse them with water, and then put them in a muffle furnace at 350°C for 35 minutes. After the end, take out the shells and put them into a crushed Pulverize in the machine, sieve to obtain 40 mesh shell powder, then mix the shell powder, starch and 17% diethanolamine aqueous solution in a container according to the mass ratio of 3:2:1; after the above mixing is completed, , move the container to a microwave reactor at 45°C for microwave-assisted reaction, perform vacuum filtration after overnight, rinse the filter cake 4 times with absolute ethanol, and then put it and lignite with 11% shell mass in a ball mill, and grind the medium Grind 5 zirconia pellets for 13 hours with a rotating speed of 60r / min, then put the powder obtained after grinding into a container, add a 10% mass fraction of sodium hydroxide solution to soak the powder; move the mixture in the a...

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PUM

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Abstract

The invention relates to a method for preparing composite biological stuffing on the basis of modified shells, and belongs to the technical field of biological stuffing. The method aims at solving the problems that existing fixed-type stuffing is small in specific surface area, low in biological film quantity and smooth in surface, biological films are prone to disengagement, and a stable and sustaining removing effect is difficult to maintain. The method comprises the steps that discarded shells are utilized, and the surfaces of the shells are modified through starch and ethylene glycol amine under the microwave action; then the shells are subjected to ball-milling activation, and the internal structure is modified through oscillation under ultrasound, the modified shells are loaded on loofah sponges, so that the microorganism biological film forming performance is improved, and disengagement is prevented; the loofah sponges loaded with the modified shells are mixed with auxiliaries, and the composite biological stuffing which has the advantages that the specific surface area is large, the biological films are not prone to disengagement, and the stable and sustaining removing effect can be maintained is prepared.

Description

technical field [0001] The invention relates to a method for preparing a composite biological filler based on modified shells, and belongs to the technical field of biological fillers. Background technique [0002] With the rapid growth of population and the advancement of industrialization, the pollution of water bodies is becoming more and more serious, and a new type of pollution has emerged that is composed of organic refractory substances, traditional ammonia nitrogen, and COD. The treatment effect of traditional sewage treatment methods on this type of sewage Generally bad. The use of microorganisms to treat polluted water bodies is a hot research direction in the field of water treatment today, and it is also a green, efficient, and non-secondary pollution treatment method. Among them, the biofilm method is to hang a film on the surface of the filler to degrade the pollutants in the sewage through the microbial group on the biofilm. [0003] The currently used biolo...

Claims

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Application Information

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IPC IPC(8): C02F3/00
CPCC02F3/00
Inventor 孙春辉宋国
Owner TRUSYN CHEM TECH
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