Algal bloom inhibitor, and preparation method and application thereof

An inhibitor and algal bloom technology, applied in the field of algal bloom inhibitor and its preparation, can solve the problems of threats to growth and survival, invasion of alien species, difficult implementation, etc. Effect

Active Publication Date: 2019-11-08
CHENGDU ACADEMY OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The physical method mainly removes algae directly by salvage, isolation, cracking and other means, basically does not produce secondary pollution, and the operation is simple, but the cost is high, and it is only suitable for small-scale emergency treatment
The biological method mainly kills harmful algal blooms through the parasitism of microorganisms and the feeding of aquatic organisms. This method also does not produce secondary pollution, but it is difficult to implement, the cost is high, and it may cause the problem of alien species invasion. In

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  • Algal bloom inhibitor, and preparation method and application thereof

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Example Embodiment

[0032] Example 1

[0033] A method for preparing an algal bloom inhibitor provided by a preferred embodiment of the present invention, the specific steps are as follows:

[0034] Pass the shell powder through a 100-mesh sieve, and then immerse it in hydrochloric acid with a concentration of 2mol / L for 24 hours according to the volume ratio of shell powder and hydrochloric acid at 1:5, and conduct intermittent ultrasonic treatment. The continuous working time is 30s and the pulse interval is 10s; The ultrasonic frequency is 20KHz, the ultrasonic power is 200W, and it is dried at 80℃ to obtain modified shell powder;

[0035] According to the volume ratio of modified shell powder and sodium carbonate solution of 1:6, the modified shell powder was immersed in a 10mol / L sodium carbonate solution for 24 hours, and dried at 80°C to obtain treated shell powder;

[0036] Add sodium chloride to the beer fermentation waste liquid, the mass fraction of sodium chloride in the beer fermentation was...

Example Embodiment

[0039] Example 2

[0040] A method for preparing an algal bloom inhibitor provided by a preferred embodiment of the present invention, the specific steps are as follows:

[0041] Pass the shell powder through a 100-mesh sieve, and then immerse it in hydrochloric acid with a concentration of 3mol / L for 24h according to the volume ratio of shell powder and hydrochloric acid at 1:6, and perform intermittent ultrasonic treatment. The continuous working time is 60s and the pulse interval is 20s; The ultrasonic frequency is 30KHz, the ultrasonic power is 300W, and it is dried at 85℃ to obtain modified shell powder;

[0042] According to the volume ratio of modified shell powder and sodium carbonate solution of 1:67, the modified shell powder was immersed in a 12mol / L sodium carbonate solution for 24 hours and dried at 85°C to obtain treated shell powder;

[0043] Add sodium chloride to the beer fermentation waste liquid, the mass fraction of sodium chloride in the beer fermentation waste li...

Example Embodiment

[0046] Example 3

[0047] A method for preparing an algal bloom inhibitor provided by a preferred embodiment of the present invention, the specific steps are as follows:

[0048] Pass the shell powder through a 200-mesh sieve, and then immerse it in hydrochloric acid with a concentration of 3mol / L for 24h according to the volume ratio of shell powder and hydrochloric acid at 1:7, and perform intermittent ultrasonic treatment. The continuous working time is 60s and the pulse interval is 20s; The ultrasonic frequency is 40KHz, the ultrasonic power is 500W, and it is dried at 90℃ to obtain modified shell powder;

[0049] According to the volume ratio of modified shell powder and sodium carbonate solution of 1:8, the modified shell powder was immersed in a 10mol / L sodium carbonate solution for 24 hours and dried at 90°C to obtain treated shell powder;

[0050] Add sodium chloride to the beer fermentation waste liquid, the mass fraction of sodium chloride in the beer fermentation waste liq...

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Abstract

The invention discloses an algal bloom inhibitor, and a preparation method and application thereof. The preparation method comprises the following steps: successively subjecting shell powder to acid leaching for modification, ultrasonic treatment, alkali leaching and soaking in waste liquid of beer fermentation; and then performing drying and crushing into powder to obtain the algal bloom inhibitor. The algal bloom inhibitor is added into algal water, and then algal flocs are removed from a water body through filtration or salvage. The algal bloom inhibitor provided by the invention can effectively adsorb flocculated algae, thereby facilitating the removal of the algae flocs out of the water body by filtering or salvaging; and the algal bloom inhibitor has better suppression effect on algal growth, can realize both temporary and permanent treatment of algal blooms, effectively prevent algal blooms, relieves harm caused by the outbreak of algal blooms from the source, is low in cost andhas great application value.

Description

technical field [0001] The invention belongs to the field of ecological restoration of water body environment, and in particular relates to an algal bloom inhibitor and its preparation method and application. Background technique [0002] In recent decades, the outbreak of algal blooms in freshwater bodies has become one of the major water environmental problems in my country and even in the world. The outbreak of algae bloom not only seriously affects the normal operation of downstream waterworks, but also the resulting algae toxins will pose a threat to the ecosystem and human health. Therefore, research on the causes, outbreak mechanism and control methods of algae blooms has always been a hot spot in environmental science and ecology research at home and abroad. [0003] Harmful algal blooms are an abnormal ecological phenomenon in which aquatic algae produce algal toxins or increase biomass, affect the growth of other organisms and the normal food chain structure, and ...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/54C02F1/28
CPCC02F1/5236C02F1/54C02F1/281C02F1/286
Inventor 丁瑶欧阳莉莉韩迁杨坤红
Owner CHENGDU ACADEMY OF ENVIRONMENTAL SCI
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