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Ecological restoration method for river sediment

A technology for ecological restoration and river sediment, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of enhanced absorption, no in-situ restoration of sediment, and inability to exert disease resistance Anti-heavy metal, anti-cold and other issues

Pending Publication Date: 2022-04-05
GUANGDONG ZHONGWEI ENVIRONMENTAL PROTECTION BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It cannot play its role in promoting plant disease resistance, salt resistance, heavy metal resistance, cold resistance, promoting plant growth and development, and enhancing plant absorption of nitrogen, phosphorus and heavy metals.
Therefore, it has not been applied to the in-situ restoration of sediment in water ecosystems

Method used

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  • Ecological restoration method for river sediment
  • Ecological restoration method for river sediment
  • Ecological restoration method for river sediment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) prepare the arbuscular mycorrhizal fungus inoculant, specifically comprising:

[0044] ①Sterile seedling cultivation: Select an appropriate amount of clover seeds, add sterile water to a 100ml beaker and soak for 4 hours, sterilize with 70% ethanol for 30-60 seconds, then pour the ethanol into the waste liquid tank, add sterile water, and shake gently , wash for 1 to 2 minutes. Then pour 10% sodium hypochlorite into the beaker, disinfect for 10 minutes, shake the beaker from time to time to make the seeds fully contact with the disinfectant, then pour the sodium hypochlorite solution into the waste liquid tank, add sterile water, shake gently, wash for 3 to 4 minutes, and repeat 3 to 4 times. Put the clover seeds in a petri dish lined with wet filter paper, put them into a constant temperature incubator at 25-28°C for light cultivation, and wait for germination for later use. During the period, add sterile water to keep the filter paper moist until germination.

...

Embodiment 2

[0061] 1. Finish the slope

[0062] The side slope of the river channel that has not been solidified is adjusted, and the aquatic mycorrhizal plants are directly cultivated on both sides of the river bank without the solidified river bank; for the solidified river bank, another suitable place can be selected for the cultivation of aquatic mycorrhizal plants.

[0063] 2. Cultivation of aquatic mycorrhizal plants

[0064] ① Preparation of arbuscular mycorrhizal fungal inoculum: refer to step (1) in Example 1 to prepare arbuscular mycorrhizal fungal inoculum.

[0065] ② Cultivate aseptic seedlings of each aquatic plant: refer to ① in step (2) in Example 1 to cultivate sterile seedlings of each aquatic plant. Aquatic plants are reeds, cannas, Zaili flowers, iris, chrysanthemums, calamus, foxtail, hornwort, bladderwort, eye vegetables, bitter herbs, black algae and Elodea.

[0066] ③Cultivation of aquatic mycorrhizal plants

[0067] First plow the soil of the embankment, dig a d...

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Abstract

The invention provides a method for ecologically restoring river sediment. The method comprises the following steps in sequence: (1) preparing an arbuscular mycorrhizal fungus inoculant; (2) inoculating an arbuscular mycorrhizal fungus inoculant to aquatic plants in a terrestrial environment to obtain aquatic mycorrhizal plants, wherein the aquatic plants comprise emergent aquatic plants and submerged plants; (3) aquatic mycorrhizal plants are transplanted into the river sediment, emergent aquatic plants are planted under the water depth of 0-0.5 m, and submerged plants are planted under the water depth of 0.5-1.2 m; and (4) managing the grown aquatic mycorrhizal plants, and regularly cleaning dry branches and fallen leaves. Aquatic plants are inoculated with arbuscular mycorrhizal fungi in a terrestrial environment, so that aquatic mycorrhizal plants with a relatively high infection rate can be formed, the adaptability of the plants is improved, the growth of the plants in a polluted environment is promoted, and the absorption of the plants to nitrogen, phosphorus and heavy metals is enhanced, thereby improving the restoration of phosphorus and heavy metals in river sediment.

Description

technical field [0001] The invention relates to the technical field of water environment treatment, and more particularly to a method for ecological restoration of river bottom mud. Background technique [0002] Sediment is an important part of the water ecosystem and the main storage pool for pollutants and nutrients. After a large number of pollutants enter the water body, they adhere to the sediment through physical and chemical effects such as adsorption, precipitation, and complexation, resulting in sediment pollution. Although measures such as strengthening interception and sewage treatment can reduce the pollution load entering the receiving water body, the endogenous release of sediment pollution has largely restricted the improvement of the polluted water body, and has become an important secondary factor that affects and restricts the improvement of water quality. source of pollution. A large amount of heavily polluted sediment will re-release pollutants into the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F3/34C02F101/10C02F101/16C02F101/20C02F101/38
CPCY02A20/402
Inventor 游义红张保安吕鸿运杨秋婵段磊谭永生
Owner GUANGDONG ZHONGWEI ENVIRONMENTAL PROTECTION BIOTECH CO LTD
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