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Method for repairing organotin polluted water by submerged plant

A submerged plant and organotin technology, applied in water pollutants, biological water/sewage treatment, water/sludge/sewage treatment, etc., to achieve no secondary pollution, fast growth and reproduction, and strong stress resistance Effect

Inactive Publication Date: 2017-02-22
JINGGANGSHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research on higher phytoremediation of organotin-polluted water bodies has not been reported. The screening of organotin hyperaccumulative plants is the basic premise and key step for phytoremediation of organotin sewage water bodies, which requires the screening of organotin-accumulating plants

Method used

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  • Method for repairing organotin polluted water by submerged plant
  • Method for repairing organotin polluted water by submerged plant
  • Method for repairing organotin polluted water by submerged plant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Put 5g, 8g, and 12g of hornwort into three groups of 2L sewage containing 5 µg / L tributyltin (TBT) (controlling pH = 6). figure 1 . After 5 days, the tin content of hornwort was 0.6mg / kg. The greater the number of hornwort algae, the better the removal effect, but the density should not be too large, 12g in 2L of water is the best. After 5 days, the salvaged hornwort was transferred to a safe place for drying, crushing, incineration, and finally a safe landfill.

Embodiment 2

[0031] Put 5g, 8g, and 12g of hornwort into 3 groups of 2L water bodies containing 10µg / L tributyltin (TBT) (controlling pH = 8), respectively. The relationship diagram of the removal effect of tributyltin (TBT) over time is shown in the appendix figure 2 . After 5 days, the tin content of hornwort was 1.1 mg / kg. The greater the number of hornwort algae, the better the removal effect, but the density should not be too large, 12g in 2L of water is the best. After 7 days, the salvaged hornwort was transferred to a safe place for drying, crushing, incineration, and finally a safe landfill.

Embodiment 3

[0033] Put 5g, 8g, and 12g of hornwort into 3 groups of 2L water bodies containing 20µg / L tributyltin (TBT) (controlling pH = 10), respectively, and see the relationship diagram of the removal effect of tributyltin (TBT) with time. image 3 . After 5 days, the tin content of hornwort was 2.1 mg / kg. The greater the number of hornwort algae, the better the removal effect, but the density should not be too large, 12g in 2L of water is the best. Ten days after the hornwort was planted, the salvaged hornwort was transferred to a safe place for drying, crushing, incineration, and finally a safe landfill.

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Abstract

The invention discloses a method for repairing organotin polluted water by a submerged plant. An angiosperm submerged macrophyte, namely Ceratophyllum demersum L. is taken as a material for repairing organotin polluted water. The method particularly comprises the following steps: (1) planting 5.1 to 12.5g of Ceratophyllum demersum L. per liter of wastewater containing 5 to 20 mug / L of TBT; (2) controlling the pH of wastewater within 6 to 10; (3) salving Ceratophyllum demersum L. after planting for 5 to 10 days; (4) transferring the salvaged Ceratophyllum demersum L. to a safe place to be dried, ground and incinerated and finally subjected to safe landfill. By adopting the method for repairing organotin polluted water by the submerged plant, the treatment efficiency of polluted water with 5 to 20 mug / L of organotin can be more than 98%, and finally organotin is removed; the technology of purifying organotin pollutants by using the submerged plant has the advantages of simple operation and management, high treatment efficiency, low cost, no secondary pollution and the like, and further has the characteristic of beautifying landscapes.

Description

technical field [0001] The invention relates to the technical field of remediation of organotin-polluted water bodies, in particular to a method for remediating organotin-polluted water bodies by using submerged plants, which rapidly removes organotin pollution in water bodies by planting submerged angiosperm hornwort algae. Background technique [0002] Organotin compounds are widely used as stabilizers for polyvinyl chloride (PVC) materials, biocides in industry and agriculture, catalysts for various chemical reactions, and ship antifouling coatings, etc. , fresh water, sea water and various aquatic organisms are polluted by organotin. Organotin pollutants have the characteristics of both heavy metals and persistent organic pollutants. Tributyltin with a concentration of nanograms can cause poisoning or even death of fish, shellfish, crabs and other larvae in water bodies, and produce endocrine disrupting effects. In addition, it also has a high bioaccumulation capacity. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F101/30
CPCC02F3/322C02F2101/30C02F2305/06Y02W10/10
Inventor 肖小雨尹丽邹海燕冯爽
Owner JINGGANGSHAN UNIVERSITY
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