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Method for controlling growth of scenic water algae by using emergent and submerged aquatic plants

A technology for submerged plants and water bodies, which is applied in the fields of chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., and can solve the problem of loss of landscape water bodies, rising operating costs, blackening and smelly and other issues, to achieve the effect of low processing cost, avoiding ecological risks, and easy harvesting

Inactive Publication Date: 2010-12-15
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the occupancy rate of the community is low and the reclaimed water discharge rate is low, in order to reduce operating costs, the aeration, extraction and driving devices of landscape water bodies in the form of rockery and fountains will be shut down, resulting in rapid deterioration of water quality and black hair. Smell, make the landscape water body lose its pleasant function
When the temperature is high, in order to prevent algal blooms, the aeration and fluidity of water must be enhanced, which will increase the operating cost

Method used

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  • Method for controlling growth of scenic water algae by using emergent and submerged aquatic plants
  • Method for controlling growth of scenic water algae by using emergent and submerged aquatic plants
  • Method for controlling growth of scenic water algae by using emergent and submerged aquatic plants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: Planting test of an artificial lake in a science and technology park in Shenzhen

[0018] A science and technology park in Shenzhen will be located in an artificial lake built by beautifying the pond in the park, with a water surface area of ​​about 150m 2 , with an average water depth of 60cm. Due to the high annual average temperature and abundant sunshine in Shenzhen, the eutrophication of the water body is serious, the algae multiply rapidly, and the algae cell density is relatively high. The checkerboard compound planting method is adopted and implemented through floating beds. Each floating bed is composed of a bottom plate and four baffles. Both the bottom plate and the baffles are made of foamed PVC plastic boards. 10cm, evenly distributed round holes on the bottom plate, the diameter of the round holes is 10cm, and the hole spacing is 20cm. Insert the dry umbrella grass and green feather grass with the roots wrapped in sponges in the round holes, and...

Embodiment 2

[0023] Embodiment 2: Planting test in a small pond in a residential area.

[0024] A small pond in a residential area, the water depth is less than 50cm, and the water surface area is about 30m 2 , pea-shaped, stagnant pond, the bottom is muddy, change the water once a week. Before planting, the water body is dark green, which is a typical eutrophic water body feature, and the water body is directly planted with Xanthograss - Feathergrass. The method adopted is to directly plant the dry umbrella grass and the green feather grass planted in the checkerboard compound planting mode in the bottom mud, the spacing of the green feather grass is 5cm, and then the three green feather grass and the green feather grass are separated by three plants of the dry umbrella grass and the green feather grass. Grass compound planting, that is, the spacing of the dry umbrella grass is 20cm, the thickness of the cultivation layer is 10cm, and the compound planting area is 30% of the water body a...

Embodiment 3

[0029] Example 3: The planting test of the landscape pond in the sunlight greenhouse of a resort.

[0030] The perennial temperature in the sunshine greenhouse of a resort is above 20°C. There are rockery and waterfalls inside. The water flow of the waterfall is small and falls into the lower landscape pond. The water surface of the landscape pond is about 50m 2 , the depth is 0.45m, and the bottom of the pond is artificially laid cement mortar hard bottom. Because there is no water exchange with the outside, and the temperature is high, the sun is shining all the year round, the water body is yellow-green, the turbidity is high, the water body is turbid, and the transparency is poor. The checkerboard compound planting method is adopted. The specific implementation method is: on the hard bottom, use gravel or sand with a particle size of 3 mm to 5 mm to lay a cultivation layer with a thickness of 10 cm. Plant in the cultivation layer, that is, first green feather grass is pla...

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Abstract

The invention discloses a method for controlling the growth of scenic water algae by using emergent and submerged aquatic plants. The emergent aquatic plant is cyperus alternifolius, and the submerged aquatic plant is green myriophyllum aquaticum. In the method, the cyperus alternifolius and the green myriophyllum aquaticum are planted in cultivated layers of the scenic water in a checkerboard type composite plantation mode, namely the green myriophyllum aquaticum is distributively planted in the cultivated layers in the checkerboard type, wherein the spacing of the green myriophyllum aquaticum is 5cm, the cyperus alternifolius is compositely planted with the green myriophyllum aquaticum every three plants of green myriophyllum aquaticum, wherein the spacing of the cyperus alternifolius is 20cm, the depth of the cultivated layers in the scenic water is less than 0.5m, and the composite plantation area is not less than 30 percent of the water area. The method has the advantages of simpleness, practicability, simple and convenient operation, and capacities of avoiding ecological risks, suppressing the overgrowth of the regenerated water algae and guaranteeing the safety and appreciation of an aquatic environment. The submerged and emergent aquatic plants are easily harvested and coact to produce allelochemicals capable of suppressing the algae. Therefore, the algae hardly grow in the scenic water, and the treatment cost is low.

Description

technical field [0001] The invention relates to a technology for maintaining and purifying water quality in a living ecological environment, in particular to a method for controlling the growth of algae in a landscape water body by using emergent-submerged plants. Background technique [0002] In recent years, landscape water has gradually entered residential quarters, providing a harmonious living environment between man and nature. But while people enjoy landscape water, artificial waterscape also brings certain problems. At present, many residential quarters use the purified reclaimed water as replenishment water for landscape water. Using reclaimed water instead of tap water as the water source of landscape water is a great saving of water resources; reclaimed water is more nutritious than tap water, which is conducive to the growth of fish and aquatic ornamental plants. However, due to the poor fluidity of landscape water and the lack of self-purification ability, the...

Claims

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Application Information

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IPC IPC(8): C02F3/32
CPCY02W10/10
Inventor 秦松岩周启星周金喜段雅琦
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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