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A kind of algae control method and algae control agent

A technology for controlling algae and algae enzymes of cyanobacteria is applied in chemical instruments and methods, water treatment parameter control, water/sewage multi-stage treatment, etc., and can solve the problems of slow biological control of algae and easy recurrence of physical algae removal methods. Achieve the effect of being beneficial to growth, beneficial to photosynthesis, and low cost of treatment

Active Publication Date: 2020-11-03
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Physical algae removal methods are easy to relapse, chemical algae killing has ecological risks, and biological algae control is slow to take effect. This technical solution is proposed

Method used

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  • A kind of algae control method and algae control agent
  • A kind of algae control method and algae control agent
  • A kind of algae control method and algae control agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Algae killing experiment

[0073] First, add the algae density to approximately 1.5×10 into 6 1L reactors. 6 Pcs / L of algae solution, and then add the final concentration of BM algae control enzyme of 0mg / L, 1mg / L, 2mg / L, 3mg / L, 4mg / L, 5mg / L into the algae solution, and add 150r / Mim assisted stirring for 2 minutes to make it evenly mixed; then placed for 30 minutes to measure the turbidity of the water and the content of chlorophyll a, and calculate the turbidity and chlorophyll a removal rate. The results are shown in Table 1. It can be seen from Table 1 that BM algae control enzyme has a good algae killing effect. When its dosage is 3.0mg / L, its turbidity removal rate is 51.12%, and the removal rate of chlorophyll a reaches 93.67%. Increase its dosage , The removal rate of turbidity and chlorophyll has not been significantly improved, so from the perspective of economy and environmental protection, 3.0mg / L is selected as the dosage of BM algae control enzyme.

[0074] Ta...

Embodiment 2

[0077] Anti-algae experiment

[0078] Prepare the L-lysine stock solution with a concentration of 10 mg / mL for use.

[0079] The density of the algae loaded in the 1L reactor is about 1.5×10 6 Pcs / L of Microcystis aeruginosa algae solution, add 3.0mg / L of BM algae control enzyme, and add 0.1mL, 0.3mL, 0.5mL, 0.7mL, 1.0mL of L-lysine stock solution, add The amounts are 1.0 mg / L, 3.0 mg / L, 5.0 mg / L, 7.0 mg / L, and 10.0 mg / L. Among them, the algae liquid without the agent was used as the blank group, and BM algae control enzyme (dosing amount of 3.0 mg / L) and L-lysine (dosing amount of 5.0 mg / L) were added separately as the blank group. Control group. And with 150r / mim auxiliary stirring for 2min to make it evenly mixed; then placed 0.017d, 1d, 5d, 15d, 30d, 45d, 60d under the conditions of temperature 25℃, light intensity 2000lx, light-dark cycle 12h: 12h Measure the content of chlorophyll a in the water body, calculate the removal rate of chlorophyll a, and the results are as foll...

Embodiment 3

[0081] Algae precipitation experiment

[0082] Add 1L into the 6 reactors and the initial algae density is 1.5×10 6 A / L of Microcystis aeruginosa algae liquid, perform the operation of Example 2, wherein the dosage of BM algae control enzyme is 3.0 mg / L, and the dosage of L-lysine is 5.0 mg / L. Then add PAC flocculant with dosages of 5.0 mg / L, 10.0 mg / L, 20.0 mg / L, 30.0 mg / L, and 40.0 mg / L into the reactor. Among them, the algae liquid without added medicine was taken as the control group. And with 150r / mim auxiliary stirring for 2min to make it evenly mixed; then under the conditions of temperature 25℃, light intensity 2000lx, light-dark cycle 12h:12h, place for 30min and then measure the turbidity of the water body, calculate the turbidity removal rate, the result As shown in table 2. When the dosage of flocculant was 20.0mg / L, the turbidity removal rate reached 89.33%.

[0083] Table 2 The influence of different dosage of PAC flocculant on the removal rate of algae turbidity

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Abstract

The invention discloses an alga control method for blue-green algae and belongs to the technical field of environmental ecological engineering. The method comprises the steps of adding BM-alga controlenzyme and L-lysine into a microcystis aeruginosa liquid, conducting stirring and fully mixing the liquid uniformly; adding a flocculating agent into the mixed liquid and conducting stirring and thenstanding. The invention also provides an alga control agent used for the alga control method, and the alga control agent comprises BM-alga control enzyme and L-lysine. The provided method or the algacontrol agent can achieve large-scale treatment and have the advantages that an alga killing effect on the blue-green algae is achieved, the alga precipitation speed is high, the transparency of water body after treatment is high, the alga control time is long, the treatment cost is low and there is no secondary pollution.

Description

Technical field [0001] The invention relates to the technical field of environmental ecological engineering, in particular to a cyanobacteria algae control method and an algae control agent. Background technique [0002] In recent years, with the intensification of water eutrophication, the frequency of cyanobacteria blooms in China and the world has gradually increased. In addition to large lakes such as Taihu Lake, Chaohu Lake and Dianchi Lake, there are also urban landscape water bodies, such as landscape lakes (Wuhan East Lake). , Nanjing Xuanwu Lake); urban rivers (Beijing Changhe water system), all have been reported. [0003] The landscape water bodies mainly include small rivers and lakes artificially constructed or transformed, which have become an important part of optimizing, beautifying and purifying the urban environment. At present, because most of these water bodies are artificially constructed or modified, they are basically closed or semi-closed, with poor fluidit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34C02F1/52C02F9/14
CPCC02F1/5236C02F3/342C02F3/348C02F2103/007C02F2209/11C02F2303/20
Inventor 吴越刘丹妮任宁郭敏常江侯文华赵若楠
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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