Preparation method of zeolite-loaded potassium permanganate algicide and method for controlling and removing algae

A technology of potassium permanganate and algaecide, applied in herbicides and algaecides, botanical equipment and methods, chemical instruments and methods, etc., can solve the problem of not mentioning the removal effect of algal toxins, etc., and achieve significant economical benefits. and environmental benefits, small impact on the ecological environment, and the effect of inhibiting algal blooms

Inactive Publication Date: 2012-11-21
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Using clay as a raw material for preparing light-weight floating algae-removing materials, metal ions, the effective ingredients for algae removal, are obtained from clay with the help of sulfuric acid leaching method in mineral processing, and prepared into a new type of algae-removing agent, which has no secondary effects on water bodies. Pollution is a lake water algaecide with good research and development prospects, but the main component of the algaecide is still heavy metals, and there is no mention of the removal effect on algae toxins

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take the water sample of Microcystis aeruginosa grown in the laboratory, the chemical oxygen demand of the raw water is 6.03mg / L, the chlorophyll a (characterizing the algae biomass in water) is 95.2μg / L, and the microcystin MC-LR is 9.22μg / L , the microcystin MC-RR is 1.13μg / L, add 0.1g / L algaecide to the algae liquid, mix well, take regular samples every day to extract chlorophyll a, and monitor the microcystin after algaecide treatment changes. The results showed that the biomass of Microcystis aeruginosa decreased from the first day after adding the algaecide. With the prolongation of the reaction time, the biomass of Microcystis aeruginosa decreased day by day. The removal rates of chlorophyll a in 4 and 5 days were 34.7%, 62.8%, 78.9%, 81.7%, and 82.1%, respectively. After 5 days, the microcystin MC-LR in the water was 0.953 μg / L, and the removal rate was 89.7%. -RR is 0.932μg / L, the removal rate is 17.2%, and the residual microcystin content in water is lower th...

Embodiment 2

[0029]Take the water sample of Microcystis aeruginosa cultivated in the laboratory, the chemical oxygen demand of the raw water is 5.91mg / L, the chlorophyll a (characterizing the algae biomass in water) is 197.3μg / L, and the microcystin MC-LR is 5.91μg / L , MC-RR was 1.22 μg / L. Add 0.17g / L algaecide to the algae liquid, mix evenly, regularly sample and extract chlorophyll a every day to measure the biomass of Microcystis aeruginosa, and monitor the changes of microcystins after algaecide treatment. The results showed that the biomass of Microcystis aeruginosa decreased from the first day after adding the algaecide. With the prolongation of the reaction time, the biomass of Microcystis aeruginosa decreased day by day. The removal rates of chlorophyll a in 4 and 5 days were 26.4%, 76.9%, 80.3%, 87.2%, and 85.7%, respectively. After 5 days, the microcystin MC-LR in the water was 0.89 μg / L, and the removal rate was 84.9%. -RR is 0.76μg / L, the removal rate is 37.9%, and the residua...

Embodiment 3

[0031] Take the water sample of Microcystis aeruginosa cultivated in the laboratory, the chemical oxygen demand of the raw water is 7.38mg / L, the chlorophyll a (characterizing the algae biomass in water) is 879.5μg / L, and the microcystin MC-LR is 9.89μg / L , MC-RR was 1.21 μg / L. Add 0.28g / L algaecide to the algae liquid, mix well, regularly sample and extract chlorophyll a to measure the biomass of Microcystis aeruginosa, and monitor the changes of microcystins after algaecide treatment. The results showed that the biomass of Microcystis aeruginosa decreased from the first day after adding the algaecide. With the prolongation of the reaction time, the biomass of Microcystis aeruginosa decreased day by day. The removal rates of chlorophyll-a in the 4th and 5th days were 14.3%, 76.4%, 84.8%, 82.6%, 87.4%, respectively. After 5 days, the microcystin MC-LR in the water was 0.82 μg / L, the removal rate was 91.7%, the MC-RR was 1.06 μg / L, the removal rate was 12.1%, and the residual ...

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Abstract

The invention discloses a preparation method of zeolite-loaded potassium permanganate algicide. The preparation method uses potassium permanganate and 40-60 meshes of artificial zeolite as raw materials and comprises the following steps of: preparing the potassium permanganate into a water solution with the mass concentration of 0.5g / L; baking the artificial zeolite for 2 hours at 120 DEG C; placing the baked zeolite in the potassium permanganate solution, then oscillating and soaking for 1 hour under the constant temperature of 25 DEG C, standing for 1 hour, filtering by using a filter membrane with the aperture of 0.45 micrometer, and baking the filtered zeolite for 12 hours at 50 DEG C to obtain the zeolite-loaded potassium permanganate algicide. The invention also discloses a method for controlling and removing algae, wherein a direct casting and adding method is adopted according to water quality to be treated, i.e. directly adding the algicide into the water, and the large amount of algae in the water can be effectively removed after fully mixing the algicide with the water and the action of the algicide on algae cells.

Description

technical field [0001] The invention belongs to the field of environmental protection, and particularly relates to a preparation method of a chemical algaecide and a method for controlling algae and removing algae in lakes, reservoir water, and water treatment processes for algae (especially blue-green algae) outbreaks caused by water body eutrophication . Background technique [0002] Eutrophication is a water pollution phenomenon caused by excessive plant nutrients such as nitrogen and phosphorus. Under natural conditions, this is an extremely slow process. However, due to human activities, after a large amount of industrial wastewater, domestic sewage, and plant nutrients in farmland runoff are discharged into slow-flowing water bodies such as lakes, reservoirs, estuaries, and bays, aquatic organisms, especially algae, will multiply in large numbers, and the water in lakes and reservoirs will alternate. Slow, poor self-purification ability, exacerbated the eutrophicatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/16A01P13/00C02F1/00
Inventor 李星梁爽杨艳玲安东子王睿
Owner BEIJING UNIV OF TECH
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