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Method for treating aquaculture tail water by utilizing immobilized photosynthetic bacteria flora

A technology for photosynthetic bacteria and aquaculture, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc. Use cost and other issues to achieve the effect of avoiding secondary pollution, preventing leakage, and high use value

Pending Publication Date: 2022-04-29
湖南省环境保护科学研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when photosynthetic bacteria treat aquaculture wastewater, there are also many disadvantages: due to the small size of photosynthetic bacteria cells, it is difficult to recycle; in the process of photosynthetic bacteria treating aquaculture wastewater, it is necessary to add bacterial liquid intermittently and regularly, which increases the cost of use
In addition, when some colored photosynthetic bacteria treat wastewater, the wastewater effluent will change color, which seriously hinders the pace of practical application and promotion of photosynthetic bacteria treating wastewater.
In addition, in the actual research process of the inventors of the present application, it is also found that it is difficult to efficiently remove ammonia nitrogen, phosphorus and fouling organisms in the aquaculture wastewater when only the isolated Rhodopseudomonas is used to treat the actual aquaculture wastewater. of pollutants

Method used

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  • Method for treating aquaculture tail water by utilizing immobilized photosynthetic bacteria flora
  • Method for treating aquaculture tail water by utilizing immobilized photosynthetic bacteria flora
  • Method for treating aquaculture tail water by utilizing immobilized photosynthetic bacteria flora

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method utilizing immobilized photosynthetic bacteria flora (chitosan+sodium alginate composite immobilized pellets) to process aquaculture tail water, comprising the following steps:

[0033] Add the spheroid 40g that is fixed with photosynthetic bacterium flora according to the addition amount of the spheroid that is fixed with photosynthetic bacterium flora for every liter of aquaculture tail water, the spheroid that is fixed with photosynthetic bacterium flora and aquaculture tail water (this aquatic product Breeding tail water, the total nitrogen concentration is 3.07mg / L, the total phosphorus concentration is 0.49mg / L, the ammonia nitrogen concentration is 2.471mg / L) mixed, and the light-dark ratio is 12h: 12h (12h under the light condition every day, in the dark Under the conditions of 12h) for 6 days, the treatment of aquaculture tail water is completed, and the pellets with fixed photosynthetic bacteria flora used are based on the chitosan-sodium alginate complex...

Embodiment 2

[0049] Investigate the treatment effect of immobilized photosynthetic bacteria flora under different light conditions, basically the same as embodiment 1, difference only is: be 12h: 12h (12h under light conditions every day, 12h under dark conditions) condition at light-to-dark ratio Under light conditions (i.e. under light conditions for 24h every day) for 5 days, and under dark conditions (i.e. under dark conditions for 24h every day) for 5 days, the results are as follows: Figure 5 shown.

[0050] Figure 5 It is a comparison chart of the treatment effect of immobilized photosynthetic bacteria flora on aquaculture tail water under different light-to-dark ratio conditions in Example 2 of the present invention. Such as Figure 5 As shown, the illumination time is the illumination ratio of 12h:12h to NH 4 + -N, TP and TN have the best removal effects, and their treatment effects are 91.8%, 91.4% and 89.3%, respectively. NH in wastewater 4 + -N degradation process, the...

Embodiment 3

[0052] Investigate the processing effect of immobilized photosynthetic bacteria flora under the condition of different dosages, it is basically the same with embodiment 1, difference only is: according to the addition amount is 20g / L, 30g / L, 40g / L, 50g / L, 60g / L L, 70g / L, be 12h: 12h (every day under light condition 12h, under dark condition 12h) condition processing 5 days at light-dark ratio, the result is as follows Figure 6 shown.

[0053] Figure 6 It is a comparison chart of the treatment effect of different dosages of immobilized photosynthetic bacteria flora on aquaculture tail water in Example 3 of the present invention. Such as Figure 6 As shown, when the dosage is 40g / L, NH 4 + -N, TP and TN have the best removal efficiencies of 92.2%, 92.3% and 89.9%, respectively. When the dosage is in the range of 20-40g / L, the pollutant degradation efficiency increases with the dosage increasing. It may be because with the increase of the immobilized photosynthetic bacteri...

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Abstract

The invention discloses a method for treating aquaculture tail water by utilizing immobilized photosynthetic bacteria flora, which comprises the following steps: treating the aquaculture tail water by adopting spherulites immobilized with photosynthetic bacteria flora, the spherulites immobilized with photosynthetic bacteria flora are prepared by taking a chitosan-sodium alginate compound as a carrier, rhodopseudomonas, desulfurization vibrio, protein bacteria and bacteroides are embedded in the carrier. According to the method disclosed by the invention, the spherulites fixed with the photosynthetic bacteria flora are put into the aquaculture tail water, and organic pollutants including ammonia nitrogen, phosphorus and fouling organisms in the aquaculture tail water are jointly purified by utilizing the synergistic effect of the rhodopseudomonas, the desulfurization vibrio, the protein bacteria and the bacteroides and the adsorption effect of the embedding material; therefore, effective treatment of aquaculture wastewater is realized, and the method has the advantages of simple process, convenience in operation, low cost, high treatment efficiency, good treatment effect, environmental protection and the like, can be used for widely treating aquaculture tail water, and is high in use value and good in application prospect.

Description

technical field [0001] The invention belongs to the technical field of aquaculture tail water treatment, and relates to a method for treating aquaculture tail water by using immobilized photosynthetic bacteria flora. Background technique [0002] With the continuous increase of people's demand for food and aquatic products, the aquaculture industry is developing rapidly all over the world. At the same time, with the continuous growth of market demand, farmers implement high-density, high-input, and high-yield farming methods, causing a large amount of unconsumed feed and fish and shrimp manure to enter the aquaculture water body and become aquaculture. The main source of organic pollutants in water bodies. Among them, the concentrations of total phosphorus, non-ionic ammonia, and permanganate index in aquaculture water bodies are extremely increased, resulting in a significant decline in the water quality of aquaculture water bodies. The main pollutants in aquaculture tail ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F101/10C02F101/16C02F101/30
CPCC02F3/34C02F2101/105C02F2101/16C02F2101/30
Inventor 付广义郑颖钟宇刘雅妮赵媛媛田石强曾桂华陈韬施洋李耀宇周霜
Owner 湖南省环境保护科学研究院
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