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Aquaculture tail water treatment system and treatment method

An aquaculture and treatment system technology, applied in biological water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problems of ecological environment destruction, nitrogen and phosphorus pollutants, etc. good effect

Pending Publication Date: 2022-01-07
NINGBO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aquaculture tailwater contains a large amount of pollutants. If it is discharged without treatment, it will cause great damage to the ecological environment. Therefore, the development and optimization of green and efficient aquaculture tailwater treatment technology is a major research hotspot at present. However, the biological treatment of aquaculture tailwater is currently Fado focuses on the use of a single filter-feeding animal to absorb excess nutrients in the tail water of the aquaculture, but the filter-feeding animal itself is an aquaculture organism, which will also produce a certain amount of nitrogen and phosphorus pollutants during the treatment process

Method used

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  • Aquaculture tail water treatment system and treatment method
  • Aquaculture tail water treatment system and treatment method
  • Aquaculture tail water treatment system and treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: Constructing a marine photosynthetic complex microbial system with optimal ratios

[0026] Six strains of photosynthetic bacteria and one strain of marine yeast were selected through preliminary experiments, namely Pseudomonas putida, Chlorobium limicola, Chromatiumminus, Rhodospirillum rubrum), Rhodobacter capsulatus, Rhodopseudomonas palustris and Rhodotorulamucilaginosa, Rhodospirilla rubrum, Capsulatus capsulatus and Rhodotorula mucilaginosa were screened out through pretreatment experiments Match the ratio of Monascus and Rhodotorula japonicus.

[0027] 1. Single bacteria experiment

[0028] Centrifuge the bacteria sample at 8000RPM for 10 minutes, dilute it with sterilized water sample, adjust to OD600 value 0.5, set the input amount of each bacteria 1‰, 2‰, 3‰, 4‰, 5‰, five concentration gradients , according to the amount of input into 500ml of sewage, each group set up 2 parallel, with the tail water without bacteria solution for comparison.

[00...

Embodiment 2

[0043] Embodiment 2: Preparation of composite flora

[0044] First, activate the bacteria, the specific steps are as follows:

[0045] ①Prepare a test tube containing 5-10mL liquid medium and 2 plates for each type of bacteria, see Table 4 for the preparation method;

[0046] ② Open the freeze-dried tubes containing 5 kinds of bacteria powder in the safety cabinet, burn the neck with an alcohol lamp, then quickly drop sterile water to break it, and then smash it with tweezers;

[0047] ③Pipe 0.5mL of liquid culture medium into the freeze-drying tube, dissolve it fully, put it back into the liquid test tube, and mix well;

[0048] ④Pipe 0.2mL of the bacterial suspension into the plate, spread it evenly, repeat twice to obtain two plates; culture the plate according to the following culture conditions, culture Rhodotorula glucosa according to the medium described in Table 4, and rhodopseudomonas palustris Bacteria, Rhodobacter capsulata and Rhodospirillum rubrum were cultured ...

Embodiment 3

[0054] Example 3: Application of composite bacterial agent to aquaculture tail water treatment under pilot test conditions

[0055] The optimal ratio compound bacterial agent screened out in the laboratory experiment was put into the pilot test to simulate the comprehensive bioremediation system for the experiment, and the water quality indicators were measured in the early stage, middle and late stage of the experiment. figure 2 It is the experimental flow chart of the bioremediation system. The whole system has four treatment steps, namely, the sedimentation area, the brush area (filter area), the filter-feeding shellfish area and the artificial wet area. In the present invention, the compound bacterial agent is added to the filter-feeding shellfish area, and the input amount of the compound bacterial agent is 3‰ as the experimental group, and the system without adding the bacterial liquid is used for comparison.

[0056] image 3 It is a comparison of the water quality tr...

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Abstract

The invention provides an aquaculture tail water treatment system and treatment method. The treatment system comprises a settling zone, a filtering zone and a filter-feeding animal treatment zone. A composite flora consisting of rhodospirillum rubrum, rhodobacter capsulatus, rhodopseudomonas palustris and rhodotorula mucilaginosa is added into the filter-feeding animal treatment zone. According to the method, the culture tail water is treated by screening the microorganisms with the optimal proportion and combining the microorganisms with the filter-feeding animals. The composite microbial inoculant is combined with filter-feeding animals, and the pilot plant test proves that the effect is good. According to the invention, a composite microecological preparation based on photosynthetic bacteria is developed and combined with filter feeding shellfish to treat aquaculture tail water, so that a very good effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to an aquaculture tail water treatment system and a treatment method, that is, an aquaculture tail water treatment method combining filter-feeding animals and microorganisms. Background technique [0002] In recent years, with the rapid development of the aquaculture industry, the pollution of the aquaculture tail water cannot be ignored. Aquaculture tailwater contains a large amount of pollutants. If it is discharged without treatment, it will cause great damage to the ecological environment. Therefore, the development and optimization of green and efficient aquaculture tailwater treatment technology is a major research hotspot at present. However, the biological treatment of aquaculture tailwater is currently Fado focuses on the use of a single filter-feeding animal to absorb excess nutrients in the tail water of aquaculture, but the filter-feeding animal itself is...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F9/14C02F103/20
CPCC02F3/34C02F3/347C02F9/00C02F2103/20C02F3/32C02F1/001C02F2001/007
Inventor 许娇娇郑忠明杨文沈鼎
Owner NINGBO UNIV
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