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Preparation method and application of biological microcapsule

A microcapsule and biological technology, applied in the field of water treatment, can solve problems such as insufficient utilization, and achieve the effects of improving load and stability, simple preparation process and high production efficiency

Pending Publication Date: 2022-03-01
广东鹏凯智能装备制造有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, artificial polymers and agricultural wastes each have their own advantages, and there are very few technical solutions for the combination of the two in the prior art
not taking full advantage of its strengths

Method used

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  • Preparation method and application of biological microcapsule
  • Preparation method and application of biological microcapsule
  • Preparation method and application of biological microcapsule

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043](1) Heat and dissolve 2 g of polyvinyl alcohol (polymerization degree 1700, alcoholysis degree 99%) and 2 g of sodium alginate powder in 50 mL of deionized water at 95°C, and stir until there are no bubbles. Dry, pulverize and sieve 2g of corncobs (0.075-0.180mm) into the polyvinyl alcohol-sodium alginate mixture, put the mixture into a sterilizer, sterilize at 125°C for 20min, and cool to room temperature. Add 20mL microbial growth promoter (containing amino acid solution 10mL, vitamin solution 10mL), add 30mL compound denitrifying bacteria suspension (the volume ratio of nitrifying bacteria and aerobic denitrifying bacteria is 1:1.5) and stir well to mix Evenly, the mixed solution of polyvinyl alcohol, sodium alginate, corn cob, microbial growth-promoting agent and compound denitrification bacteria suspension (corn cob: microbial growth-promoting agent: composite bacteria suspension=2%:20% :30%).

[0044] (2) Add the mixed solution prepared above dropwise into 2% calc...

Embodiment 2

[0046] A kind of biological microcapsule that embeds composite denitrification bacteria, microbial growth-promoting agent and corncob is basically the same as the biological microcapsule prepared in Example 1, the difference is only: the quality of corncob in the biological microcapsule of Example 2 The content is 1g.

[0047] (1) Heat and dissolve 2g of polyvinyl alcohol 1799 type and 2g of sodium alginate powder in 50mL of deionized water at 95°C, and stir evenly. Dry, crush and sieve 1g of corncob (0.075-0.180mm) into the polyvinyl alcohol-sodium alginate mixture, put the mixture into a sterilizer, sterilize at 125°C for 20min, and cool to room temperature. Add 20mL microbial growth promoter (containing amino acid solution 10mL, vitamin solution 10mL), add 30mL compound denitrifying bacteria suspension (the volume ratio of nitrifying bacteria and aerobic denitrifying bacteria is 1:1) and stir well to mix Evenly, the mixed solution of polyvinyl alcohol, sodium alginate, cor...

Embodiment 3

[0050] A kind of biological microcapsule embedded with compound denitrification bacteria, microbial growth promoter and corn cob is basically the same as the biological microcapsule prepared in Example 1, the difference is only: the microbial growth promotion in the preparation method of Comparative Example 1 The dose volume is 10 mL.

[0051] (1) Heat and dissolve 2g of polyvinyl alcohol 1799 type and 2g of sodium alginate powder in 50mL of deionized water at 95°C, and stir evenly. Dry, pulverize and sieve 2g of corn cobs (0.075-0.180mm in particle size) into the polyvinyl alcohol-sodium alginate mixture, then add 10mL of the microbial growth promoter in Example 1, put the mixture into a sterilizer, Sterilize at 125°C for 20 minutes. After cooling to room temperature, add 30mL of the compound denitrification bacteria suspension in Example 1 and stir well to make it evenly mixed to prepare polyvinyl alcohol, sodium alginate, corn cob, microbial growth promoter and compound de...

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Abstract

The invention discloses a preparation method and application of a biological microcapsule. The biological microcapsule adopts polyvinyl alcohol and sodium alginate to form a microcapsule wall material, and corncobs, composite denitrifying bacteria and a microbial growth promoting agent are embedded in the microcapsule wall material. The preparation method comprises the following steps: under a sterile condition, mixing a bacterial suspension of the composite denitrifying bacteria with a sterilized compound which comprises polyvinyl alcohol and sodium alginate which are dissolved by heating, corncob and a microbial growth promoting agent, and carrying out a cross-linking reaction on the obtained mixed solution and a 1-3% calcium chloride solution to obtain the composite denitrifying bacteria. The biological microcapsule with an efficient biological nitrogen removal function and with a slow-release carbon source and a growth promoting agent is prepared through an embedding method in an immobilized microorganism technology. The biological microcapsule disclosed by the invention has the advantages of low cost, simple preparation process, high production efficiency, short production period, high product yield and the like. The biological microcapsule disclosed by the invention can be used for quickly starting a low-carbon-source sewage reactor and improving the load and the stability of a system, and has a relatively good application prospect.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a preparation method and application of biological microcapsules. Background technique [0002] Nitrogen (N) is one of the main factors causing eutrophication of water bodies, and nitrogen pollution of surface water is still the focus of attention all over the world. It is worth noting that the carbon-nitrogen ratio of most urban domestic sewage is very low, and the carbon-nitrogen ratio of urban sewage in most parts of China, especially in the south, is often lower than 4.0. The amount of biodegradable organic carbon was low, which was not enough to sustain the denitrification process, resulting in low total nitrogen removal efficiency. It is often necessary to supplement carbon sources to achieve denitrification and denitrification, which brings new problems such as difficulty in control, risk of effluent carbon exceeding the standard, and increased costs. ...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F3/30B01J13/14C02F101/16
CPCC02F3/348C02F3/303C02F3/305B01J13/14C02F2305/06C02F2101/16
Inventor 胡勇有石韵琪王国彬谢洁云朱枭强
Owner 广东鹏凯智能装备制造有限公司
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