Cultivation method for realizing symbiosis of fish and grass by utilizing biogas slurry

A breeding method and biogas slurry technology, applied in the direction of chemical instruments and methods, botany equipment and methods, applications, etc., can solve the problems of polluting the surrounding environment, complex operation, high cost, etc., and achieve low operating cost, low infrastructure investment, and management convenient effect

Pending Publication Date: 2022-03-18
INST OF AGRI ENG TECH FUJIAN ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is discharged directly without treatment, it will pollute the surrounding environment. However, most of the current treatment method

Method used

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  • Cultivation method for realizing symbiosis of fish and grass by utilizing biogas slurry
  • Cultivation method for realizing symbiosis of fish and grass by utilizing biogas slurry
  • Cultivation method for realizing symbiosis of fish and grass by utilizing biogas slurry

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Experimental program
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Effect test

Embodiment 1

[0022] Please refer to figure 1 , a terminal purification and utilization technology of foxtail fish pond tail water, comprising the following steps:

[0023] 1) A fish pond is prefabricated. The location of the fish pond needs to be located in a mild climate, good lighting conditions, and no pollution; the fish pond 1 has a ridge height of 1.2 meters and an effective water storage depth of 0.8 to 1.0 meters. The upper part of one end is provided with a tail water inlet pipe of the fish pond, and the other end of the upper part of the fish pond is provided with a water outlet for controlling the water level. In order to shade in summer and keep warm in winter, the water temperature is controlled at 18-32°C to ensure the normal growth of foxtail algae;

[0024] 2) After the completion of the fish pond, plant foxtail algae on the bottom of the pond. After the foxtail algae survive, gradually add water as the foxtail algae grows to a water level of 1.0 meters. In summer, install...

Embodiment 2

[0028] The difference between this embodiment and the above-mentioned embodiment is: the fish pond 1 tail water that passes into the foxtail algae fish pond 1 continuously through the fish pond 1 tail water inlet 20 every day 24 hours is less than 80 meters 3 , The water quality of fish pond 1 tail water is: suspended solids: 150~300mg / L, total nitrogen: 40~80mg / L, CODcr: 120~300mg / L, ammonia nitrogen: 3~5mg / L, total phosphorus: 12.0~25.0mg / L, after the suspended solids, organic matter, total N, CODcr, ammonia nitrogen and total phosphorus of the tail water of fish pond 1 that are fed into each day are absorbed and absorbed by the roots of Foxtail algae, they are discharged through the water outlet 20 that controls the water level, and the discharged The water quality is suspended solids: 10mg / L, total nitrogen: 1.3mg / L, CODcr: 18mg / L, ammonia nitrogen: 1.2mg / L, and total phosphorus: 0.26mg / L, meeting the Class IV standard for surface water discharge.

[0029] In the present ...

Embodiment 3

[0032] The difference between this embodiment and the foregoing embodiment is that it includes the following steps:

[0033] The tail water of fish pond 1 that is continuously fed into the foxtail algae fish pond 1 through the tail water inlet of fish pond 1 is less than 120 m3, and the water quality of fish pond 1 tail water is: suspended solids: 100-280mg / L , Total nitrogen: 35~80mg / L, CODcr: 100~280mg / L, ammonia nitrogen: 3~4.5mg / L, total phosphorus: 10.0~22.0mg / L, and suspended matter in the tail water of 1 fish pond fed daily , organic matter, total N, CODcr, ammonia nitrogen and total phosphorus are absorbed and utilized by the roots of Foxtail Algae, and then discharged through the water outlet that controls the water level. The water quality of the discharged water is suspended solids: 10mg / L, total nitrogen: 1.1mg / L , CODcr: 15mg / L, ammonia nitrogen: 1.0mg / L, total phosphorus: 0.21mg / L, meeting Class IV standards for surface water discharge.

[0034] In the present e...

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Abstract

The invention discloses a culture method for realizing symbiosis of fish and grass by using biogas slurry, and belongs to the field of fishpond planting. The culture method comprises the following steps: S1, a rectangular pond ridge is defined along the periphery of a fishpond, and a fishpond tail water inlet pipe and a water level adjusting and discharging pipe are sequentially arranged in the fishpond from the high position to the low position of the water level; s2, planting myriophyllum elatinoides on the water surface of the fishpond, and then erecting a sunshade above the planting range of the myriophyllum elatinoides; and S3, a dripping hole is formed in the fishpond tail water inlet pipe every 50cm, the outer surface of the biogas slurry inlet drip irrigation pipe is wrapped with slow humidity cloth, plankton is raised through biogas slurry, and the number of floating oil organisms is controlled through fishes so that the purpose of purifying water discharged through the water outlet pipe can be achieved. The content of organic matters in the water body is reduced through the combined action of biological physical, chemical and biological effects, and meanwhile, the content of dissolved oxygen is increased, so that the purpose of purifying sewage is achieved.

Description

technical field [0001] The invention belongs to the field of fish pond planting, in particular to a breeding method for realizing symbiosis of fish and grass by using biogas slurry. Background technique [0002] The fish pond tail water is the biogas slurry produced by anaerobic fermentation of feces and sewage from the livestock and poultry breeding industry, and then the fish pond tail water produced after the fish farming in the oxidation pond. This kind of fish pond tail water does not meet the discharge standard. Further treatment is required before discharge. If it is discharged directly without treatment, it will pollute the surrounding environment. However, most of the current treatment methods for this low-concentration wastewater use flocculation and sedimentation purification, which is complicated to operate and high in cost. Livestock and poultry feces and sewage are rich in feed nutrients that have not been digested and absorbed by livestock and poultry. After ...

Claims

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Application Information

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IPC IPC(8): A01K61/10A01G22/00C02F3/32
CPCA01K61/10A01G22/00C02F3/32C02F2103/20Y02A40/81
Inventor 叶美锋林代炎吴晓梅吴飞龙
Owner INST OF AGRI ENG TECH FUJIAN ACAD OF AGRI SCI
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