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Purification treatment method and purification treatment system for marine fish culture tail water

A technology for purification treatment and seawater fish, which is applied in the field of multi-combination step-by-step purification seawater fish breeding tail water purification treatment method and treatment system, can solve the problems of inability to be popularized and applied on a large scale, input and output are not directly proportional, and reach the industrial level The prospect of globalization is broad, the economic benefit is considerable, and the effect of efficient utilization

Inactive Publication Date: 2021-07-13
深圳市蓝汀鼎执生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems in the prior art that the input and output are not directly proportional and cannot be popularized and applied on a large scale, the present invention provides a method and system for purifying seawater fish farming tail water

Method used

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  • Purification treatment method and purification treatment system for marine fish culture tail water
  • Purification treatment method and purification treatment system for marine fish culture tail water
  • Purification treatment method and purification treatment system for marine fish culture tail water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1—A single algae absorbs and purifies mild eutrophication and low-suspended particle grouper culture tail water

[0032] Such as Figure 1-Figure 3 As shown, due to the low content of suspended particulate matter in this type of aquaculture tail water, it does not need to undergo free sedimentation and shellfish filtration, and is directly processed by macroalgae absorption. The specific implementation steps are as follows:

[0033] 1) Inject the culture tail water into the sea grape culture pond, the sea grape stocking density is 20g / L culture tail water, and set the control pond without adding sea grape, carry out the treatment by a definite date for 5 days, and aerate at the bottom of the culture pond;

[0034] 2) Take water samples at 0h, 0.5h, 2h, 4h, 8h, 24h, 48h, 72h and 120h of treatment respectively, and carry out the basic water quality parameters of the aquaculture tail water according to the standard method of national sea water quality determinatio...

Embodiment 2

[0041] Example 2—A single algae absorbs and purifies severe eutrophication and high-suspended particle gold pomfret culture tail water

[0042] Due to the high content of suspended particles, nitrogen and phosphorus and other nutrients in this type of aquaculture tail water, it is considered to optimize the treatment of adding biomass to different sea grapes, the same as in Example 1, and directly carry out sea grape absorption and purification treatment according to the treatment process of plan 1 .

[0043] 1) The rearing water of golden pomfret was directly injected into the sea grape culture pond, and three groups of different sea grape additions were set: 10g / L, 20g / L, and 50g / L of culture wastewater, and the purification treatment was carried out for 5 days. Three treatments were set up in parallel, and aeration was carried out at the bottom of the culture pond, and water samples were taken at 0h, 0.5h, 2h, 4h, 8h, 24h, 48h, 72h and 120h.

[0044] 2) According to the me...

Embodiment 3

[0049] Example 3 - A variety of combination schemes to deal with severe eutrophication and high suspended particles golden pomfret culture tail water

[0050] according to figure 1 In the shown treatment process, the combination scheme 2, scheme 3 and scheme 4 are respectively used to purify the tail water of golden pomfret culture. The specific operation steps are as follows:

[0051] 1) Scheme 2 is a two-stage series treatment process of free sedimentation-sea grape culture. First, the tail water from the culture is injected into the sedimentation tank for free sedimentation for 24 hours, and then the floating water is directly injected into the sea grape culture tank. Add sea grapes with a density of 20g / L, and continue the treatment for 120 hours, and the treated wastewater is poured into the clear water storage tank for recycling. Take water samples at 0h, 24h, 48h, 48.5h, 50h, 56h, 72h, 96h, 120h, and 168h of treatment to measure various water quality parameters, and co...

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Abstract

The invention provides a purification treatment method and a purification treatment system for marine fish culture tail water, which belong to the technical field of wastewater treatment. The method comprises the following steps of S1, injecting culture tail water into a caulerpa lentillifera culture pond, S2, putting caulerpa lentillifera with a certain density according to the eutrophication process and the content of suspended particulate matters, S3, aerating at the bottom of the culture pond, and S4, after purification is carried out for a set time, acquiring the content of each water quality parameter of the caulerpa lentillifera culture pond, and when the water quality discharge standard is met, discharging the purified culture tail water. The method has the beneficial effects that nutrient substances such as N and P in seawater can be efficiently utilized, greenhouse gas carbon dioxide is absorbed in a large capacity, sufficient oxygen is released, pollutants are efficiently removed, and meanwhile, the environment of a culture water body is remarkably improved; the culture wastewater is continuously used for culturing the sea grapes, so that the yield of the sea grapes can be further increased, and economic benefits are improved.

Description

technical field [0001] The invention relates to a wastewater treatment technology, in particular to a multi-combination step-by-step purification treatment method and treatment system for seawater fish breeding tail water. Background technique [0002] my country is the world's largest aquaculture country. The aquaculture industry has developed rapidly in the past 30 years and has become an important pillar industry for the development of the country's agricultural economy. The vigorous marine aquaculture operations have also caused serious eutrophication and acidification in some aquaculture sea areas. Biodiversity The reduction of fishery resources and the decline of fishery resources seriously threaten the ecological security of the offshore environment. The large and continuous discharge of aquaculture tail water has caused serious pollution of the water environment, which has led to the continuous spread of aquaculture diseases. Frequent ecological disasters such as red t...

Claims

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Application Information

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IPC IPC(8): C02F3/32A01G33/00A01K61/50A01K61/54C02F103/08C02F103/20
CPCC02F3/322C02F3/32C02F3/327A01G33/00A01K61/50A01K61/54C02F2103/08C02F2103/20C02F2001/007Y02P60/20Y02A40/80Y02A40/81
Inventor 龙元薷王文雄翁南燕陈一璇石书江
Owner 深圳市蓝汀鼎执生物科技有限公司
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