Algae removal and control method for low-speed small watershed

A technology for small watersheds and water areas, which is applied in chemical instruments and methods, multi-stage treatment of water/sewage, water pollutants, etc.

Active Publication Date: 2019-06-07
SICHUAN QINGHE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a method for algae control in slow-flow small wate

Method used

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  • Algae removal and control method for low-speed small watershed
  • Algae removal and control method for low-speed small watershed
  • Algae removal and control method for low-speed small watershed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] In the No. 1 simulated lake, a method of algae control in a slow-flow small watershed is adopted, including the following steps:

[0041] (1) Salvage 60% of the algae in the simulated lake;

[0042] (2) Arrange the gabion nets equipped with iron-carbon micro-electrolysis filler, 0.05m wide and 0.5m high, along the bank of the simulated lake to remove phosphorus in the water;

[0043] (3) Lay a sunshade net at 0.5m above the water surface, shade it for 10 days, and inhibit the growth of algae;

[0044] (4) Install an aeration device, start aeration after the shading is over, and increase the dissolved oxygen in the water;

[0045] (5) Add 30g / m to the water in the simulated lake 3 The amount of nitrifying bacteria is evenly sprinkled, and a total of 47.1g of nitrifying bacteria are sprinkled in a simulated lake. Under aerobic conditions, nitrifying bacteria degrade ammonia nitrogen in water;

[0046] (6) Add 40g / m to the water in the simulated lake 3 62.8g of phospho...

Embodiment 2

[0049] In the No. 2 simulated lake, a method of algae control in a slow-flow small watershed is adopted, including the following steps:

[0050] (1) Salvage 70% of the algae in the simulated lake;

[0051] (2) Arranging gabion nets equipped with iron-carbon micro-electrolysis fillers with a width of 0.2m and a height of 0.5m along the shore of the simulated lake to remove phosphorus in the water;

[0052] (3) Lay a sunshade net at 0.5m above the water surface, shade it for 10 days, and inhibit the growth of algae;

[0053] (4) Install an aeration device, start aeration after the shading is over, and increase the dissolved oxygen in the water;

[0054] (5) Add 50g / m to the water in the simulated lake 3 The amount of nitrifying bacteria is evenly sprinkled, and a total of 78.5g of nitrifying bacteria are sprinkled in a simulated lake. Under aerobic conditions, nitrifying bacteria degrade ammonia nitrogen in water;

[0055] (6) Add 60g / m to the water in the simulated lake 3 T...

Embodiment 3

[0058]In the No. 3 simulated lake, a method of algae control in a slow-flow small watershed is adopted, including the following steps:

[0059] (1) Salvage 75% of the algae in the simulated lake;

[0060] (2) Arrange the gabion nets equipped with iron-carbon micro-electrolysis filler, 0.15m wide and 0.5m high, along the bank of the simulated lake to remove phosphorus in the water;

[0061] (3) Lay a sunshade net at 0.5m above the water surface, shade it for 10 days, and inhibit the growth of algae;

[0062] (4) Install an aeration device, start aeration after the shading is over, and increase the dissolved oxygen in the water;

[0063] (5) Add 40g / m to the water in the simulated lake 3 The amount of nitrifying bacteria is evenly sprinkled, and a total of 62.8g of nitrifying bacteria are sprinkled in a simulated lake. Under aerobic conditions, nitrifying bacteria degrade ammonia nitrogen in water;

[0064] (6) Add 50g / m to the water in the simulated lake 3 The amount of pho...

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Abstract

The invention discloses an algae removal and control method for a low-speed small watershed. The method comprises the following steps: fishing at least 60% of algae in water; arranging a plurality ofgabion boxes filled with iron-carbon micro-electrolysis fillers along the periphery of the bank of the fished water area to remove phosphorus in the water; laying a sunshade net at 0.5 m above the water surface, and carrying out shading treatment for 10 days to inhibit growth of algae; mounting an aeration device so that aeration is started after shading is finished, and dissolved oxygen in wateris increased; uniformly throwing nitrifying bacteria into the water area for degrading ammonia nitrogen in the water by the nitrifying bacteria under an aerobic condition; uniformly spreading a phosphorus-accumulating bacterial agent to the water area for sucking phosphorus in the water into the body by the phosphorus-accumulating bacterium agent under the aerobic condition; by avoiding aeration positions, adding daphnia magna into a water area. Physical algae removal and biological algae removal methods are combined, so that the method is simple and easy to operate, takes effect quickly, doesnot bring secondary pollution to the environment and has few remaining problems.

Description

technical field [0001] The invention belongs to the technical field of water body eutrophication control, and in particular relates to a method for removing algae and controlling algae in a small slow-flow watershed. Background technique [0002] Water is the most widely distributed resource in the world, and it is also an indispensable substance for the survival and development of living things. However, there are very few water resources available for us to use in the world. With the rapid development of my country's industry and agriculture and the continuous improvement of people's living standards, urban sewage and industrial wastewater have increased rapidly, but the sewage treatment rate is very low. Most of the untreated sewage is discharged into natural lakes and rivers, causing biological pollution. The required nutrients such as nitrogen and phosphorus enter the water body in large quantities, causing algae and other plankton to multiply rapidly, resulting in eutro...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/10C02F101/16
Inventor 任洁李建黄东方向文良宋菲菲
Owner SICHUAN QINGHE TECH
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