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Method for treating algae breeding wastewater

A technology for breeding wastewater and algae, applied in chemical instruments and methods, animal husbandry wastewater treatment, biological water/sewage treatment, etc.

Inactive Publication Date: 2020-04-17
青岛卓越海洋集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Judging from the current situation of freshwater aquaculture, traditional high-density and intensive aquaculture will lead to excessive accumulation of feces and residual bait in the water body, exceeding the self-purification capacity of the water body, causing a serious imbalance in the water environment, and bringing total nitrogen and total phosphorus generally exceeding the standard , the eutrophication of the water body is serious; the harmful substances such as ammonia nitrogen and nitrite exceed the standard, which have a direct poisonous effect on the fish body and increase the number of fish diseases

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for utilizing algae to treat aquaculture wastewater provided in this embodiment specifically includes the following steps:

[0022] (1) cultivating algae cells;

[0023] (2) prepare fixative;

[0024] (3) Algae cells are mixed with a fixative;

[0025] (4) Immobilizing the algae cells to make algae balls;

[0026] (5) The algae bulbs bred in the liquid culture medium are connected to the aquatic product breeding wastewater for wastewater treatment.

[0027] Step (1) is specifically as follows: microalgae are enriched and cultured in seawater F / 2 medium, and the initial inoculation density is 1×10 5 pcs mL -1 , the light intensity is 1300lux, the temperature is 18-25°C, and the relative humidity is 70%-80% in an artificial climate box for 1-3 weeks, and the algae liquid is centrifuged.

[0028] Step (2) specifically includes: preparing a sodium alginate solution with a concentration of 1-2%, and fully dissolving it by autoclaving at 121° C. for 20 minutes. ...

Embodiment 2

[0033] The method of Example 1 was applied to fish pond culture water, and the change and removal rate of total nitrogen and total phosphorus content were measured after adding immobilized algae cell balls.

[0034] It can be seen that the immobilized algae cell balls prepared by the method of the present invention can quickly and effectively remove the total N and total P in the fish pond water, the removal rate of TN can reach more than 80%, and the removal rate of TP can reach 90% above.

[0035] Before adding (mg / L) After adding (mg / L) Removal rate% Total N 8.93 1.45 83.8 Total P 1.21 0.11 90.1

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PUM

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Abstract

The invention discloses a method for treating algae breeding wastewater. The method specifically comprises the following steps: (1) culturing algae cells; (2) preparing a fixing agent; (3) mixing thealgae cells and the fixing agent; (4) immobilizing the algae cells to prepare algae balls; and (5) inoculating the algae balls propagated in a liquid culture medium into aquatic product culture wastewater, and carrying out wastewater treatment. Compared with the method in the prior art, the method of the invention has the following characteristics that free algae cells are fixed or embedded to form algae balls so as to recovery in time, avoid secondary pollution, effectively reduce the content of total nitrogen and total phosphorus in an aquatic product culture water body and purify water, andthe algae balls can be repeatedly utilized so as to improve the utilization rate, and can be used as an animal bait, or can be separated and processed into other downstream products so as to achieveeconomic value.

Description

technical field [0001] The present invention relates to the field of wastewater treatment, in particular to a method for treating aquatic product breeding wastewater with immobilized algae cells. Background technique [0002] With the improvement of people's living standards, the demand for aquatic products continues to increase, resulting in the rapid development of my country's aquaculture industry. Judging from the current situation of freshwater aquaculture, traditional high-density and intensive aquaculture will lead to excessive accumulation of feces and residual bait in the water body, exceeding the self-purification capacity of the water body, causing a serious imbalance in the water environment, and bringing total nitrogen and total phosphorus generally exceeding the standard , the eutrophication of the water body is serious; the harmful substances such as ammonia nitrogen and nitrite exceed the standard, which have a direct toxic effect on the fish body and increas...

Claims

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Application Information

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IPC IPC(8): C02F3/32C02F103/20
CPCC02F3/322C02F2103/20
Inventor 陈世波刘云锋丁风强闫勇
Owner 青岛卓越海洋集团有限公司
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