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Application of chrysopogon zizanioides in eutrophic water

A technology of eutrophication and vetiver grass, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of secondary environmental pollution, poor effect, and difficult operation. , to achieve the effect of improving water quality

Inactive Publication Date: 2011-09-21
蔡秋童
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Traditional algae removal methods such as chemical, physical and biological manipulation often have the disadvantages of secondary environmental pollution, difficult operation and poor effect.

Method used

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  • Application of chrysopogon zizanioides in eutrophic water
  • Application of chrysopogon zizanioides in eutrophic water
  • Application of chrysopogon zizanioides in eutrophic water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: The algal inhibitory effect of Vetiver

[0018] 1.1 Test material

[0019] Vetiver (Vetiveria zizanioides (L.) Nash.) was collected from the Vetiver Planting Base in Shuifan Village, Changpu Town, Yuexi County, Anhui Province.

[0020] The test algal seed toxicity Microcystis aeruginosa (Microcystis aeruginosa) was provided by the School of Life Sciences, Anhui Normal University, and BG-11 medium was used for algal seed culture.

[0021] The composition of BG-11 medium is: NaNO 3 , 1.5g / L, K 2 HPO 4 ·3H 2 O, 0.04g / L, MgSO 4 ·7H 2 O, 0.075g / L, CaCl 2 ·2H 2 O, 0.036g / L, Citric Acid, 0.006g / L, Ferric Ammonium Citrate, 0.006g / L, EDTA, 0.001g / L, Na 2 CO 3 , 0.02g / L, distilled water, 919mL / L.

[0022] Cultivation of algal seeds: Under sterile conditions, add 100 mL of culture medium to each of the washed and sterilized triangular conical flasks, insert the algal seeds, shake well, and place in a light incubator for cultivation. Culture conditions: illum...

Embodiment 2

[0062] Example 2: Removal of algal toxins by vetiver.

[0063] 2.1 Test material

[0064] Vetiver (Vetiveria zizanioides (L.) Nash. was derived from Example 1 .

[0065] 2.2 Reagents

[0066] The cyanobacterial toxin MC-LR is provided by the Department of Biochemistry of An Normal University, and is a product of the Wuhan Institute of Hydrobiology, Chinese Academy of Sciences.

[0067] 2.3 Absorption experiment of MC-LR by roots and leaves of vetiver

[0068] Select the newly grown roots and the newly grown young leaves from the roots from the vetiver grass after culturing for 10 days, wash and rinse with distilled water 3 times, and then absorb the water with filter paper (the operation is carried out on the ultra-clean workbench) Carry out algal toxin absorption experiments.

[0069] Sterilized MC-LR was added to the BG11 medium, and the concentrations of MC-LR were 1, 5 and 10 μg / L, respectively. Immerse the roots or leaves of 2g fresh weight in 100mL of MC-LR solution...

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Abstract

The invention discloses application of chrysopogon zizanioides in eutrophic water. Compared with the prior art, the invention has the advantages that: chrysopogon zizanioides root, stem and leaf extracting solution and chrysopogon zizanioides culture water have effect of inhibiting growth of Microcystis aeruginosa and mixed algae in Chaohu Lake water; and chrysopogon zizanioides roots and leaves have absorption and degradation effects on microcystin MC-LR. Due to the developed root system of the chrysopogon zizanioides and capacity of the chrysopogon zizanioides of growing in the eutrophic water, the chrysopogon zizanioides planted on shores of lakes or in floating beds can absorb nitrogen and phosphorus in water, improve water quality and protect dikes, also can effectively inhibit the algae and absorb cyanobacterial toxins, and has important application significance for protecting water environment.

Description

technical field [0001] The present invention belongs to the technical field of the use of vetiver grass. Background technique [0002] Vetiver (Vetiveria zizanioides (L.) Nash, English name vetiver) is a perennial plant of the Poaceae family, named for its root fragrance. Now it has been promoted, propagated, developed and utilized in most provinces of our country. [0003] The root system of vetiver is 5 meters long, and it is known as "the herb with the longest root system in the world". Erosion resistance, the average tensile strength of the root system can reach 75 MPa, which is equivalent to 1 / 6 of the ultimate strength of low carbon steel of the same diameter. Therefore, the root system of vetiver grass is called "reinforcing steel mesh", and it is an excellent material for fixing slope and berm. [0004] Vetiver can grow normally under complete flooding, and can also grow on very compact, strong acid (pH=4) or strong alkali (pH=11), salt water and heavy metal conta...

Claims

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Application Information

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IPC IPC(8): C02F3/32
Inventor 蔡秋童毛宣海王飞
Owner 蔡秋童
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