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In-situ regulation and control method for lake algae

An algae and in-situ technology, applied in the direction of chemical instruments and methods, botany equipment and methods, applications, etc., can solve the problems of poor continuous effect, secondary environmental pollution, high cost, etc., achieve long-lasting effect, low implementation cost, and low cost bottom effect

Pending Publication Date: 2022-07-22
WUHAN ZHONGKE HYDROBOLOGY ENVIRONMENTAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the conventional methods for removing the source of algae in the sediment include dredging treatment, spraying microbial agents and chemical agents, etc., but there are problems such as high cost, poor sustainable effect, and easy to cause secondary environmental pollution.

Method used

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  • In-situ regulation and control method for lake algae
  • In-situ regulation and control method for lake algae
  • In-situ regulation and control method for lake algae

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The invention provides an in-situ regulation method for algae in a lake. In the downwind direction of the lake, in the area where algae easily gather, an algae capture facility 1 is set up, and in different areas of the algae capture facility 1, the shading treatment of polyethylene sunshade nets 2, Planting of submerged plants 3, laying polyethylene film 4 at the bottom for physical covering, etc., respectively deal with the value-added control of algae in the water body and the control of the release of algae sources in the sediment. The specific implementation process includes the following steps:

[0033] Step 1. Lay the steel pipe piles 13 according to the shape of the algae capture facility 1. The steel pipe piles 13 are fixed in place according to the given coordinate points and spacing. It is about 30cm to 50cm higher than the lake water level;

[0034] Step 2. Put the plastic ropes 18 on the upper and lower sides of the impermeable enclosure 15 on the upper an...

Embodiment 2

[0053] This embodiment is a method for in-situ regulation of lake algae. In the process of in-situ regulation of algae in high-latitude lakes, in step 4, the primary shading area of ​​Area A 11 of the algae capture facility accounts for 40% of the area of ​​Area 11 of the algae capture facility. The initial shading time is maintained at 5d, and the initial shading rate is 75%; in step 5, the secondary shading area of ​​the algae capture facility A area 11 accounts for 60% of the area of ​​the algae capture facility A area 11, and the algae capture facility B area 12 secondary shading area The shading area accounts for 60% of the area of ​​the algae capture facility B area 12, the shading time is 2d, and the shading rate is 90%. Others are the same as in Example 1.

Embodiment 3

[0055] The present embodiment is a method for in-situ regulation of algae in lakes. In the process of in-situ regulation of algae in mid-latitude lakes, in step 4, the primary shading area of ​​Area A of the algae capture facility accounts for 50% of the area of ​​Area A of the algae capture facility. The initial shading time is maintained at 5d, and the initial shading rate is 80%; in step 5, the secondary shading area of ​​the algae capture facility A area 11 accounts for 80% of the area of ​​the algae capture facility A area 11, and the secondary shading area of ​​the algae capture facility B area 12 The shading area accounts for 80% of the area of ​​the algae capture facility B area 12, the shading time is 2d, and the shading rate is 95%. Others are the same as in Example 1. Others are the same as in Example 1.

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Abstract

The invention relates to an in-situ regulation and control method for lake algae. Steel pipe piles are arranged according to the appearance of an algae capturing facility; fishing the blue-green algae; a single-layer black polyethylene sunshade net is fixed to the upper portion of the algae capturing facility area A, and a polyethylene film is fixed to the bottom of the algae capturing facility area B; fishing the blue-green algae after shading; a double-layer black polyethylene sunshade net is laid above the water surface of the alga capturing facility B area, and a black polyethylene sunshade net is additionally laid in the alga capturing facility A area; fishing the blue-green algae, and planting the submerged plants. The illumination intensity of the water body is reduced through shading treatment, the algae can obtain the illuminance which cannot meet the requirement of photosynthesis of the algae, the purpose of inhibiting the growth of the algae is achieved, meanwhile, through combination of submerged plants and polyethylene film covering, the algae flux released to the water body in the recovery process of a sediment algae seed source is reduced, and the recovery rate of the algae is increased. The method has the advantages of being simple, easy to implement, low in implementation cost, free of secondary pollution and better in sustainability.

Description

technical field [0001] The invention relates to the field of water body restoration, in particular to an in-situ regulation method of lake algae. Background technique [0002] At present, the governance situation of cyanobacteria in my country is still severe. Although certain effects have been achieved in many lakes, the goal of eliminating cyanobacteria is still far away. Many new technologies have been developed for in situ treatment of cyanobacteria at home and abroad, such as photocatalysis, electrochemistry, electromagnetic field, hydrodynamic cavitation coagulation, flocculation, air flotation algae removal, floating algae removal, algae lysis, ultrasonic wave, allelopathy , fishing and controlling algae and other methods, but most of them are in the laboratory development stage. Although the algae removal efficiency is high, it is limited by the limitations of control conditions, and it is difficult to achieve large-scale application in the case of in-situ treatment....

Claims

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Application Information

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IPC IPC(8): C02F1/00A01G22/00
CPCE02B15/00E02B15/04C02F1/00A01G22/00C02F2103/007
Inventor 周林叶晶雷玉新赵剑肖磊万斌段昌兵彭香玉
Owner WUHAN ZHONGKE HYDROBOLOGY ENVIRONMENTAL ENG
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