阅读说明：本技术 一种新型抑藻剂及其制备工艺 (Novel algistat and preparation process thereof ) 是由 李林 刘小昌 廖海荣 翟家豪 陈文洪 于 2020-06-24 设计创作，主要内容包括：本发明公开了一种新型抑藻剂,包含枸杞-樟树叶-山楂提取液和焦磷酸钠,所述枸杞-橡树叶-山楂提取液为枸杞干、干樟树叶和山楂果干的混合水提取溶液。本发明制备的抑藻剂对水体中的藻类有很好的抑制作用,且抑藻剂原料大多为环境友好型,且用量较少,不会对水体产生二次污染。(The invention discloses a novel algicide, which comprises a medlar-camphor leaf-hawthorn extracting solution and sodium pyrophosphate, wherein the medlar-oak leaf-hawthorn extracting solution is a mixed water extracting solution of dried medlar, dried camphor leaves and dried hawthorn fruits. The algistat prepared by the invention has good inhibiting effect on algae in water, and most of the raw materials of the algistat are environment-friendly, and the algistat has less consumption, and does not cause secondary pollution to the water.)

1. The novel algicide is characterized by comprising a medlar-camphor leaf-hawthorn extracting solution and sodium pyrophosphate, wherein the medlar-oak leaf-hawthorn extracting solution is a mixed water extracting solution of dried medlar, dried camphor leaf and dried hawthorn.

2. The novel algistat according to claim 1, wherein the preparation method of the wolfberry-camphor leaf-hawthorn extract comprises:

(1) mixing the raw materials according to the mass ratio of dried medlar to dried camphor tree leaves to dried hawthorn fruit =1: 0.6-1.0: 0.2-0.3, chopping, and soaking the chopped mixture in a container filled with deionized water;

(2) sealing the container and exhausting air to enable the air pressure in the container to be lower than 0.2 standard atmospheric pressure, heating deionized water in the container to 50-60 ℃, keeping the temperature for 10 days, cooling the deionized water with the container to room temperature after the temperature is kept constant, balancing the air pressure inside and outside the container, taking out the extraction product in the container, filtering, and concentrating the liquid phase under reduced pressure to obtain the medlar-camphor tree leaf-hawthorn extracting solution.

3. The novel algistat according to claim 2, wherein in step (2), the filtered residue is again soaked in an aqueous solution of sodium citrate, heated, boiled and extracted, condensed and refluxed, the boiling time is 30-40 min, air-cooled to room temperature after extraction is completed, the extracted liquid phase is filtered and collected, a boiled extract is obtained by concentration under reduced pressure, and the boiled extract is mixed with the concentrated solution under reduced pressure in step (2), so that the medlar-camphor leaf-hawthorn extract is obtained.

4. The novel algistat according to claim 2, wherein in step (1), the mixture is soaked in deionized water at a ratio of mixture/deionized water =1g: 60-100 mL, and in step (2), the liquid phase is concentrated under reduced pressure to 1/4 in an unconcentrated volume.

5. The novel algae inhibitor as claimed in claim 3, wherein the concentration of sodium citrate in the sodium citrate aqueous solution is 6-10 g/L, the proportion of filter residue soaked in the sodium citrate aqueous solution is that the filter residue/the sodium citrate aqueous solution =1g: 40-50 mL, and the liquid phase after leaching is decompressed and concentrated to 1/2 of the volume before concentration, so as to obtain a boiled leaching solution.

6. The novel algistat according to claim 2, wherein a mass ratio of the wolfberry-camphor leaf-hawthorn extract to the sodium pyrophosphate is wolfberry-camphor leaf-hawthorn extract/sodium pyrophosphate =500g: 2-6 g.

7. A method for preparing a novel algistat according to any one of claims 1 to 6, comprising the steps of:

(1) mixing the raw materials according to the mass ratio of dried medlar to dried camphor tree leaves to dried hawthorn fruit =1: 0.6-1.0: 0.2-0.3, chopping, and soaking the chopped mixture in a container filled with deionized water;

(2) sealing the container and exhausting air to ensure that the air pressure in the container is lower than 0.2 standard atmospheric pressure, heating the deionized water in the container to 50-60 ℃, keeping the temperature for 10 days, cooling the deionized water with the container to room temperature after the temperature is kept constant, balancing the air pressure inside and outside the container, taking out the extraction product in the container, filtering, and concentrating the liquid phase under reduced pressure to obtain the medlar-camphor tree leaves-hawthorn extracting solution;

(3) adding sodium pyrophosphate into the medlar-camphor leaf-hawthorn extract according to the mass ratio of medlar-camphor leaf-hawthorn extract/sodium pyrophosphate =500g: 2-6 g, and obtaining the novel algicide.

Technical Field

The invention belongs to the technical field of environmental protection, and particularly relates to a novel algistat and a preparation process thereof.

Background

The eutrophication phenomenon is mainly treated by inhibiting harmful algae, even killing the harmful algae, wherein the blue algae is taken as a main object. The blue algae is not selected to the temperature firstly, and plants which like pollution are planted secondly, so that the blue algae has strong competitiveness, can expel other organisms and dominate water and soil of one party. In nature, the blue algae has strong competitiveness and is in an advantage state, and when the water body is seriously polluted, the algae in the water are the blue algae. The inhibition of the growth of algae is an important aspect for eutrophication control and is deeply concerned by various countries, and the current methods for inhibiting algae mainly comprise the following aspects: 1. the physical method comprises the following steps: mainly comprises an ultrasonic wave method, an isolation method, an electromagnetic wave method, a sediment drying method, an ultraviolet radiation method, a circulating water flow method, a dilution method, a micro-filter for removing algae, an air floatation method, clay or activated carbon adsorption and the like. 2. The biological method comprises the following steps: mainly comprises an algae inhibiting nutrition competition method, an animal catching method and the like for microorganisms and other large aquatic or terrestrial plants. 3. The chemical method comprises the following steps: harmful algae are directly killed by using chemicals.

Disclosure of Invention

The invention provides a novel algicide, which comprises a medlar-camphor leaf-hawthorn extracting solution and sodium pyrophosphate, wherein the medlar-oak leaf-hawthorn extracting solution is a mixed water extracting solution of dried medlar, dried camphor leaves and dried hawthorn fruits.

Further, the preparation method of the medlar-camphor leaf-hawthorn extracting solution comprises the following steps:

(1) mixing the raw materials according to the mass ratio of dried medlar to dried camphor tree leaves to dried hawthorn fruit =1: 0.6-1.0: 0.2-0.3, chopping, and soaking the chopped mixture in a container filled with deionized water;

(2) sealing the container and exhausting air to enable the air pressure in the container to be lower than 0.2 standard atmospheric pressure, heating deionized water in the container to 50-60 ℃, keeping the temperature for 10 days, cooling the deionized water with the container to room temperature after the temperature is kept constant, balancing the air pressure inside and outside the container, taking out the extraction product in the container, filtering, and concentrating the liquid phase under reduced pressure to obtain the medlar-camphor tree leaf-hawthorn extracting solution.

Further, in the step (2), soaking the filtered filter residue in an aqueous solution of sodium citrate again, heating, boiling, leaching, condensing, refluxing, boiling for 30-40 min, air cooling to room temperature after leaching is completed, filtering, collecting a leached liquid phase, concentrating under reduced pressure to obtain a boiled leaching solution, and mixing the boiled leaching solution with the reduced-pressure concentrated solution in the step (2) to obtain the medlar-camphor leaf-hawthorn extracting solution.

Further, in the step (1), the mixture is soaked in deionized water at a ratio of mixture/deionized water =1g: 60-100 mL, and in the step (2), the liquid phase is concentrated under reduced pressure to 1/4 in volume before concentration.

Further, in the sodium citrate aqueous solution, the concentration of sodium citrate is 6-10 g/L, the proportion of the filter residue soaked in the sodium citrate aqueous solution is that the filter residue/sodium citrate aqueous solution =1g: 40-50 mL, and after leaching, the liquid phase is decompressed and concentrated to 1/2 of the volume before concentration, so that boiling leaching liquor is obtained.

Further, in the algistat, the mass ratio of the medlar-camphor leaf-hawthorn extract to the sodium pyrophosphate is that the medlar-camphor leaf-hawthorn extract/sodium pyrophosphate =500g: 2-6 g.

A preparation method of a novel algistat comprises the following steps:

(1) mixing the raw materials according to the mass ratio of dried medlar to dried camphor tree leaves to dried hawthorn fruit =1: 0.6-1.0: 0.2-0.3, chopping, and soaking the chopped mixture in a container filled with deionized water;

(2) sealing the container and exhausting air to ensure that the air pressure in the container is lower than 0.2 standard atmospheric pressure, heating the deionized water in the container to 50-60 ℃, keeping the temperature for 10 days, cooling the deionized water with the container to room temperature after the temperature is kept constant, balancing the air pressure inside and outside the container, taking out the extraction product in the container, filtering, and concentrating the liquid phase under reduced pressure to obtain the medlar-camphor tree leaves-hawthorn extracting solution;

(3) adding sodium pyrophosphate into the medlar-camphor leaf-hawthorn extract according to the mass ratio of medlar-camphor leaf-hawthorn extract/sodium pyrophosphate =500g: 2-6 g, and obtaining the novel algicide.

Therefore, the beneficial effects of the invention are as follows: the algistat prepared by the invention has good inhibiting effect on algae in water, and most of the raw materials of the algistat are environment-friendly, and the algistat has less consumption, and does not cause secondary pollution to the water.

Drawings

FIG. 1 is a graph showing the effect of the algistat prepared in each example and comparative example on the inhibition of Microcystis aeruginosa.

Detailed Description

The following is a detailed description with reference to examples: