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Comprehensive treatment method of aquaculture sewage

A technology for aquaculture and comprehensive treatment, applied in biological water/sewage treatment, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc. Regardless of issues such as resource recovery and utilization, achieve important health care and medicinal value, reduce load and cost, and enrich nutritional value

Active Publication Date: 2017-01-11
TANGSHAN HAIDU SEAFOOD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The field return mode refers to the direct application of wastewater to the land. This mode has the advantages of simplicity and economy, but it occupies a large area and has low resource recovery efficiency, which cannot meet the wastewater treatment requirements of the modern intensive farming industry.
Industrialized treatment mode refers to a kind of method that adopts anaerobic, aerobic, anaerobic-aerobic and other processes to treat aquaculture sewage for the purpose of discharge. It is the main treatment method in European and American countries. Its main disadvantages are high energy consumption and treatment cost In addition, the treatment cost of excess sludge is equivalent to that of wastewater treatment, and this model uses biochemical treatment alone without considering the recycling of resources, which does not meet the development needs of my country's current aquaculture industry
The natural treatment mode refers to the treatment of aquaculture sewage by means of natural treatment methods such as oxidation ponds, land treatment or artificial wetland systems. However, the effect of using this mode to treat organic matter is not ideal

Method used

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  • Comprehensive treatment method of aquaculture sewage

Examples

Experimental program
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Effect test

Embodiment 1

[0024] A comprehensive treatment method for aquaculture sewage, comprising the following steps:

[0025] (1) Aquaculture sewage is collected and flowed into the sewage collection tank, and a grid is provided in the sewage collection tank, and the culture sewage produced by the cultivation tank enters the sedimentation filter tank from the water outlet of the sewage collection tank through the pipeline after passing through the grid;

[0026] (2) Under sterile conditions, transfer Spirulina to Zarrouk medium for cultivation, the cultivation conditions are: growth temperature 28±2°C, pH value 8-9, light intensity 3000lx, light-dark ratio 12h:12h; Centrifuge the spirulina cultured to the stable stage at 5000-6000rpm for 20-30min, remove the algae, and keep the supernatant for later use;

[0027] (3) Weigh the following components by mass: 27 parts of Enteromorpha powder, 25 parts of corn stalks, 20 parts of loquat leaves, 12 parts of sawdust, 7 parts of aloe vera, 7 parts of Hout...

Embodiment 2

[0033] A comprehensive treatment method for aquaculture sewage, comprising the following steps:

[0034] (1) Aquaculture sewage is collected and flowed into the sewage collection tank, and a grid is provided in the sewage collection tank, and the culture sewage produced by the cultivation tank enters the sedimentation filter tank from the water outlet of the sewage collection tank through the pipeline after passing through the grid;

[0035] (2) Under sterile conditions, transfer Spirulina to Zarrouk medium for cultivation, the cultivation conditions are: growth temperature 28±2°C, pH value 8-9, light intensity 3000lx, light-dark ratio 12h:12h; Centrifuge the spirulina cultured to the stable stage at 5000-6000rpm for 20-30min, remove the algae, and keep the supernatant for later use;

[0036] (3) Weigh the following components by mass: 25 parts of Enteromorpha powder, 25 parts of corn stalks, 15 parts of loquat leaves, 9 parts of sawdust, 9 parts of aloe vera, 8 parts of Houtt...

Embodiment 3

[0042] A comprehensive treatment method for aquaculture sewage, comprising the following steps:

[0043] (1) Aquaculture sewage is collected and flowed into the sewage collection tank, and a grid is provided in the sewage collection tank, and the culture sewage produced by the cultivation tank enters the sedimentation filter tank from the water outlet of the sewage collection tank through the pipeline after passing through the grid;

[0044] (2) Under sterile conditions, transfer Spirulina to Zarrouk medium for cultivation, the cultivation conditions are: growth temperature 28±2°C, pH value 8-9, light intensity 3000lx, light-dark ratio 12h:12h; Centrifuge the spirulina cultured to the stable stage at 5000-6000rpm for 20-30min, remove the algae, and keep the supernatant for later use;

[0045] (3) Weigh the following components by mass: 30 parts of Enteromorpha powder, 22 parts of corn stalks, 12 parts of loquat leaves, 10 parts of sawdust, 8 parts of aloe vera, 5 parts of Hout...

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Abstract

The invention relates to a comprehensive treatment method of aquaculture sewage. The comprehensive treatment method includes: allowing the aquaculture sewage generated by an aquaculture pond to pass a grille and then enter a precipitation and filtration tank from the water outlet of a sewage collecting tank through a pipeline; evenly mixing the fermentation liquor of spirulina metabolite, enteromorpha prolifera powder and the like and sweet potato powder according to the mass ratio of (12-15):(2-3):(5-6) to obtain a mixture; adding the mixture into the precipitation and filtration tank, stirring, standing for 2-3 hours, filtering the upper-layer seawater in the precipitation and filtration tank through a filtering screen, and pumping the filtered seawater into the aquaculture pond for aquaculture, wherein the mass ratio of the mixture to the aquaculture sewage is 1:(100-150); allowing sludge precipitated to the bottom of the precipitation and filtration tank to enter sludge drying equipment through a sludge pump, dewatering the sludge, and using the dewatered sludge as fertilizer for a seawater pond or as farmland fertilizer after being desalted. The comprehensive treatment method is capable of effectively degrading aquaculture pollution, low in cost and capable of reasonably utilizing the aquaculture sewage.

Description

technical field [0001] The invention belongs to the field of aquaculture pond sewage treatment, and in particular relates to a comprehensive treatment method for aquaculture sewage. Background technique [0002] At present, the rapid development of aquaculture has solved the food problem to a certain extent, met people's demand for aquatic products, and solved the problem of relative shortage of natural fishery resources. However, the rapid development of the aquaculture industry has brought serious pollution to the marine ecological environment, which has become a bottleneck that is difficult to break through in my country's aquaculture industry and seriously restricts the sustainable development of my country's aquaculture industry. In marine fish farming, its metabolites account for 20% to 35% of the feeding amount, and the residual bait is 10% to 40% of the feeding amount, which are directly discharged into the water body, thereby reducing dissolved oxygen in the water, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F11/00C02F11/12C05F7/00
CPCC02F1/001C02F1/52C02F1/56C02F3/322C02F3/325C02F9/00C02F11/00C02F11/12C05F7/00Y02A40/20
Inventor 李卫东潘澎陈义陈崎冲李步先代伊铭姚兴锐姚荣才李俊福
Owner TANGSHAN HAIDU SEAFOOD CO LTD
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