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Method for resourceful treatment of aquaculture wastewater by using photosynthetic bacteria

A technology of photosynthetic bacteria and aquaculture, which is applied in animal husbandry wastewater treatment, water/sewage multi-stage treatment, biological water/sewage treatment, etc., can solve the problem of high energy consumption of microwave flocculation unit, difficulty in wide application, and complex preparation of catalysts and other problems, to achieve the effect of simple and feasible operation, fast reproduction speed and small footprint

Inactive Publication Date: 2021-08-27
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problems of this method are: large floor area, long construction period, high operating cost
The problem of this method is that the process equipment is complicated, the energy consumption of the microwave flocculation unit is high, and the residual sludge generated after sedimentation needs to be treated twice, and the cost is high, which limits the further application of this method
The problems of this method are: complex treatment process, high energy consumption, complex preparation of catalyst used in ozone catalytic oxidation, and difficulty in wide application

Method used

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  • Method for resourceful treatment of aquaculture wastewater by using photosynthetic bacteria

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Embodiment 1

[0035] The invention discloses a method for resourceful treatment of aquaculture wastewater by using photosynthetic bacteria, the process flow chart is as follows figure 1 As shown, after the aquaculture wastewater is intercepted and separated by precipitation through the grid and the sedimentation tank, the obtained waste residue is returned to the field for utilization after anaerobic composting. Filtration and separation are carried out, and the effluent is discharged after online testing. The retained photosynthetic bacteria cells are first subjected to high-pressure homogenization and crushing to obtain cell disruption liquids, and then extracted with different organic solvents, and the obtained extracts are then distilled to obtain coenzyme Q10, cytochrome, 5-aminoacetyl Alanine and protein, and the remaining waste liquid is discharged up to standard after aerobic biological treatment.

[0036] Specific steps are as follows:

[0037] (1) Pretreatment: The aquaculture w...

Embodiment 2

[0047] The invention discloses a method for resourceful treatment of aquaculture wastewater by using photosynthetic bacteria, specifically as follows:

[0048] (1) Pretreatment: The aquaculture wastewater discharged from the aquaculture farm passes through the grid and the sedimentation tank in turn to remove the residual bait, fish and shrimp feces, scales and other large suspended particles in the wastewater.

[0049] (2) Photosynthetic bacteria wastewater treatment: the effluent from the sedimentation tank flows into the photosynthetic bacteria pool for treatment, the light intensity is set to 5500lux, the water temperature is 32°C, the pH is 7.0, the dissolved oxygen is 4mg / L, and the hydraulic retention time is 5 days.

[0050] (3) Membrane separation: After the wastewater is treated by photosynthetic bacteria, it flows into the membrane bioreactor for separation, and the effluent is discharged after being tested to meet the standard, and the separated photosynthetic bacte...

Embodiment 3

[0058] The invention discloses a method for resourceful treatment of aquaculture wastewater by using photosynthetic bacteria, specifically as follows:

[0059] (1) Pretreatment: The aquaculture wastewater discharged from the aquaculture farm passes through the grid and the sedimentation tank in turn to remove the residual bait, fish and shrimp feces, scales and other large suspended particles in the wastewater.

[0060] (2) Photosynthetic bacteria wastewater treatment: the effluent from the sedimentation tank flows into the photosynthetic bacteria pool for treatment, the light intensity is set to 5000lux, the water temperature is 35°C, the pH is 6.5, the dissolved oxygen is 5mg / L, and the hydraulic retention time is 5 days.

[0061] (3) Membrane separation: After the wastewater is treated by photosynthetic bacteria, it flows into the membrane bioreactor for separation, and the effluent is discharged after being tested to meet the standard, and the separated photosynthetic bacte...

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Abstract

The invention discloses a method for resourceful treatment of aquaculture wastewater by using photosynthetic bacteria. The method comprises the following steps: pretreating wastewater, filtering and separating the wastewater through a photosynthetic bacteria pool and a membrane bioreactor, and discharging the effluent after the effluent is detected online and reaches the standard; carrying out high-pressure homogenization crushing on the intercepted photosynthetic bacteria to obtain cell crushing liquid, making the cell crushing liquid extracted through different organic solvents and distilled to obtain coenzyme Q10, cytochrome, 5-aminoacetylalanine or protein in sequence; and finally, making residual waste liquid subjected to aerobic biological treatment and then discharged after reaching the standard. According to the method, resource treatment and reutilization of the aquaculture wastewater can be realized, the aquaculture wastewater can be efficiently treated, and meanwhile, high-value resource substances can be obtained.

Description

technical field [0001] The invention belongs to the technical field of water treatment technology, and in particular relates to a method for treating aquaculture wastewater by using photosynthetic bacteria and realizing reuse of material resources. Background technique [0002] In recent years, with the development of large-scale and intensive aquaculture technology, my country's aquaculture industry has developed rapidly and has become the largest aquatic country in the world in terms of aquaculture output. However, due to the need to put a large amount of bait in intensive aquaculture, the aquaculture wastewater has the characteristics of high nitrogen and phosphorus content. If it is discharged without proper treatment, it will cause serious harm to the natural water environment. [0003] At present, there are few treatment methods for aquaculture wastewater in my country, and most of them still focus on the use of traditional physical, chemical and biological treatment p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C07K14/80C07K1/14C07C50/28C07C46/10C07C227/40C07C229/22C02F103/20C02F101/16C02F101/10
CPCC02F9/00C07K14/80C07K1/145C07C46/10C07C227/40C02F1/001C02F2001/007C02F3/34C02F3/1268C02F2103/20C02F2101/105C02F2101/16C07C50/28C07C229/22
Inventor 黄津辉赵维鑫
Owner NANKAI UNIV