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A method for enriching heavy metals in eutrophic water by using the arrangement of submerged plants

A technology of submerged plants and eutrophication, applied in chemical instruments and methods, water pollutants, biological water/sewage treatment, etc.

Active Publication Date: 2021-06-29
武汉昌宝环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Current research on ecological restoration rarely involves the configuration of submerged plants

Method used

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  • A method for enriching heavy metals in eutrophic water by using the arrangement of submerged plants
  • A method for enriching heavy metals in eutrophic water by using the arrangement of submerged plants
  • A method for enriching heavy metals in eutrophic water by using the arrangement of submerged plants

Examples

Experimental program
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Effect test

Embodiment 1

[0020] A method for efficiently enriching heavy metals in eutrophic water bodies by utilizing the arrangement of submerged plants, the steps of which are as follows:

[0021] (1) Screen out dominant submerged plants from eutrophic water bodies: Three dominant submerged plants were screened out from eutrophic water bodies in the wild, namely hornwort (C.demersum), bitter grass (V.natans) and M. spicatum (M. spicatum);

[0022] (2) Propagate and amplify superior submerged plants using seed bank technology: take hornwort and chrysoprhiza spicosa tops at 10 or 12 or 14 or 15 cm, and cut grass with roots to a height of 10 or 11 or 13 or 15 cm, insert lake mud and Massive growth and expansion in the sediment mixed with sand and soil at a ratio of 2:1, the water depth is 60 or 70 or 80 or 90 or 100cm;

[0023] (3) Allocation of submerged plants with different advantages: the spatial configuration is canopy-type submerged plants hornwort and chrysostrum spicosa and rosette-type subme...

Embodiment 2-6

[0033] Its implementation steps are identical with embodiment 1.

[0034] From the results of Examples 2-6, it can be concluded that when hornwort: P. spicaculata: Erythrina fragrans = 1:2:2, the ability to enrich various heavy metals in eutrophic water bodies is the strongest. When the number of hornwort algae is large, the growth of chrysanthemum rosette is limited by light, so the ability to accumulate heavy metals is also weakened.

[0035]

[0036] The above examples show that arsenic, chromium, copper, lead and zinc in nutrient-rich water can be efficiently enriched by using the 1:2:2 quantity configuration of three different growth-type species of hornwort, chrysanthemum spikulatus, and Erytheria spica. This kind of heavy metal has played the role of not only economy and environmental protection, but also ecological beauty.

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Abstract

The invention discloses a method for enriching heavy metals in eutrophic water by using the configuration of submerged plants. The steps are: (1) screening submerged plants from eutrophic water; Aquatic plants: take hornwort and chrysoprhiza spicosa at the top, prune bitter grass with roots, insert lake mud and sand; (3) configuration of submerged water plants: space species configuration is hornwort: chrysoprhiza spikyflora: bitter grass; ( 5) Enrichment of heavy metals in submerged plants with different configurations: collect hornwort, chrysoprhiza spicosa and bitter grass, dry, pulverize, grind and sieve to determine the heavy metal content of arsenic, chromium, copper, lead and zinc in the plants; (6) Harvesting of heavy metal-enriched submerged plants. The method is simple, easy to operate, significantly and effectively repairs the heavy metal pollution of the eutrophic water body, fundamentally improves the water quality, improves the self-purification ability of the water body, and comprehensively improves the landscape effect of the water body.

Description

technical field [0001] The invention belongs to the technical field of environment and water treatment environment, and more specifically relates to an ecological restoration method for efficiently enriching heavy metals in eutrophic water bodies by using the configuration of submerged plants, which is suitable for eutrophic lakes, reservoirs, rivers, ditches, Water bodies such as ponds. Background technique [0002] The rapid development of human society has led to serious heavy metal pollution in my country's soil and water bodies, such as excessive mining and untreated sewage. A large amount of heavy metals contained in them are mixed with nitrogen, phosphorus, etc. along with surface runoff through rivers, ditches and pipe networks Nutrients flow into the water body together. Therefore, eutrophic water bodies, including lakes, reservoirs, streams, ditches, etc., not only have high concentrations of nitrogen and phosphorus nutrients, but also high concentrations of variou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32C02F11/02C02F101/10C02F101/20C02F101/22
CPCC02F3/32C02F3/322C02F11/02C02F2101/103C02F2101/20C02F2101/22
Inventor 邢伟吴昊平郝贝贝刘寒刘贵华
Owner 武汉昌宝环保工程有限公司
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