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Regulating method for fish culture using biogas slurry

A biogas slurry and fish pond technology, which is applied in fish farming, application, climate change adaptation, etc., can solve the problems of centralized discharge of aquaculture wastewater, utilization and consumption of difficult-to-arable land, and large amount of biogas slurry, and promote the purification of biogas slurry. , saving bait and realizing the effect of safe use

Active Publication Date: 2020-09-11
福建华创绿动再生资源回收利用有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the intensive and large-scale development of the livestock and poultry breeding industry, a large amount of aquaculture wastewater has been discharged in a concentrated manner, and the biogas slurry produced by its anaerobic fermentation is generally difficult to match with enough arable land for utilization and consumption in most parts of the south.
Due to the large amount of biogas slurry produced, the return to the field is limited for consumption. If the biogas slurry is not used effectively, it must be purified, otherwise direct discharge will cause environmental pollution.

Method used

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  • Regulating method for fish culture using biogas slurry
  • Regulating method for fish culture using biogas slurry

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Example 1 Reference figure 1 and figure 2

[0021] A control method for fish farming using biogas slurry, comprising the following steps:

[0022] 1) A fish pond 10 is prefabricated. The location of the fish pond needs to be located in a mild climate, good lighting conditions, and non-polluting area; the upper side of the fish pond is provided with a biogas slurry inlet pipe 11, and the other side of the upper part of the fish pond is provided with There is an outlet pipe 12 for controlling the water level, and the bottom of the fish pond is provided with a drain pipe 13; the area of ​​the fish pond is 1.5 mu, and the water storage capacity is 2000m 3 , install two multi-functional shallow aerobic aeration devices in the fish pond. After the fish pond is full of water, start to inject biogas slurry, and turn on the multi-functional shallow aerobic aeration device to cultivate plankton and aerobic microorganisms in the water .

[0023] 2) One week later, fish fry wi...

Embodiment 2

[0028] Example 2 Reference figure 1 and figure 2

[0029] A control method for fish farming using biogas slurry, comprising the following steps:

[0030] 1) A fish pond 10 is prefabricated. The location of the fish pond needs to be located in a mild climate, good lighting conditions, and non-polluting area; the upper side of the fish pond is provided with a biogas slurry inlet pipe 11, and the other side of the upper part of the fish pond is provided with There is an outlet pipe 12 for controlling the water level, and the bottom of the fish pond is provided with a drain pipe 13; the area of ​​the fish pond is 1.75 mu, and the water storage capacity is 2300m 3 , install two multi-functional shallow aerobic aeration devices in the fish pond. After the fish pond is full of water, start to inject biogas slurry, and turn on the multi-functional shallow aerobic aeration device to cultivate plankton and aerobic microorganisms in the water .

[0031] 2) One week later, fish fry w...

Embodiment 3

[0036] Example three reference figure 1 and figure 2

[0037] A control method for fish farming using biogas slurry, comprising the following steps:

[0038] 1) A fish pond 10 is prefabricated. The location of the fish pond needs to be located in a mild climate, good lighting conditions, and non-polluting area; the upper side of the fish pond is provided with a biogas slurry inlet pipe 11, and the other side of the upper part of the fish pond is provided with There is an outlet pipe 12 for controlling the water level, and the bottom of the fish pond is provided with a drain pipe 13; the area of ​​the fish pond is 2.0 mu, and the water storage capacity is 2600m 3 , install two multi-functional shallow aerobic aeration devices in the fish pond. After the fish pond is full of water, start to inject biogas slurry, and turn on the multi-functional shallow aerobic aeration device to cultivate plankton and aerobic microorganisms in the water .

[0039] 2) One week later, fish fr...

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PUM

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Abstract

The invention relates to a regulation method for utilizing biogas slurry for fish culture. The method includes step 1) a fish pond is prefabricated, a biogas slurry inlet pipe is arranged on one sideof the upper portion of the fish pond, a drain pipe for controlling the water level is disposed on the lower portion of the fish pond, and two multi-functional shallow aerobic aeration devices are mounted in the fish tank; step 2) in selected fishes, filter feeding type chub and bighead carp in the upper layer of the water are primary, combined with herbivorous grass carp in water the middle layerand carp and crucian in the water lower layer; step 3) the biogas slurry is led into the fish pond through the biogas slurry inlet pipe, and the biogas slurry is generated by anaerobic fermentation of fecal sewage generated by the livestock and poultry industry; step 4) the biogas slurry inlet pipe continuously injects the biogas slurry into the fish pond for 24 h every day, the daily inflow andoutflow amount of the biogas slurry in the fish pond is controlled, and the biogas slurry inlet amount is 1.5-2% of the effective water amount. Through the combined effects of physics, biochemistry and biology, the dissolved oxygen content in the water body is increased, and nutritive substances in the biogas slurry are quickly utilized in a variety of ways to be converted into bait capable of being used by fish.

Description

technical field [0001] The invention relates to a method for regulating and controlling fish by using biogas slurry. Background technique [0002] Biogas slurry is the waste water produced by anaerobic fermentation of feces and sewage from livestock and poultry breeding. Anaerobic fermentation can kill pathogenic bacteria and diseased insect eggs in feces, and the removal rate is as high as 98%. Livestock and poultry manure sewage is rich in feed nutrients that have not been digested and absorbed by livestock and poultry. After anaerobic fermentation, it is not only rich in bacterial protein, but also contains a variety of peptide proteins, amino acids, vitamins, undecomposed organic matter, trace elements and unknown Growth factors and other animal nutrients, these nutrients help to improve the immune function and disease resistance of fish, therefore, biogas slurry is nutrient-rich wastewater that can be safely used as fish bait; and biogas slurry also contains a large amo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/10
CPCA01K61/10Y02A40/81
Inventor 林代炎宋永康吴晓梅吴飞龙叶美锋
Owner 福建华创绿动再生资源回收利用有限公司
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