Method for enriching heavy metals in eutrophic water body by means of configuration of submerged plants

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

Active Publication Date: 2018-08-10
武汉昌宝环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Current research on ecological restoration rarel

Method used

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  • Method for enriching heavy metals in eutrophic water body by means of configuration of submerged plants
  • Method for enriching heavy metals in eutrophic water body by means of configuration of submerged plants
  • Method for enriching heavy metals in eutrophic water body by means of configuration of submerged plants

Examples

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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 a eutrophic water body by means of configuration of submerged plants. The method comprises the following steps: (1) screening submerged plants from a eutrophic water body; (2) using a seed bank to breed and multiply the submerged plants: taking the tips of ceratophyllum demersum and myriophyllum spicatum, and pruning vallisneria spiralis with roots, and then inserting into lake mud and sandy soil; (3) carrying out configuration of the submerged plants: configuring the species according to a spatial sequence of the ceratophyllum demersum, the myriophyllum spicatum and the vallisneria spiralis; (5) enriching the heavy metals by using the different configured submerged plants: collecting the configured ceratophyllum demersum, myriophyllum spicatum and vallisneria spiralis, drying, pulverizing, grinding and sieving, and then determining the contents of the heavy metals such as arsenic, chromium, copper, lead and zinc in plants;(6) harvesting the submerged plants enriched with the heavy metals. The method is simple and easy to implement and convenient to operate, obviously repairs the heavy metal pollution of the eutrophicwater body, fundamentally improves the water quality, improves the self cleaning capacity 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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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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