Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for removing Microcystin-LR in water body by using bromides

A technology of microcystin and bromide, applied in the field of water treatment, can solve problems affecting people's health, ecological water system hazards, water pollution and odor, etc., and achieve the effect of small investment, high removal rate and strong removal effect

Inactive Publication Date: 2010-09-01
WUXI MEIHUA CHEM
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The massive reproduction of algae in the eutrophic water body eventually causes the outbreak of algae bloom, which has brought serious harm to the ecological water system; the water quality is dirty and smelly, and the transparency is reduced. Very toxic microcystins seriously affect the health of the people

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Prepare dibromohydantoin solution with a concentration of 100mg / L, and use a sprayer to spray the dibromohydantoin solution to the microcystin-polluted waters, and the spraying amount of the dibromohydantoin solution is 100ml / m 2 . After the dibromohydantoin solution was sprayed into the waters for 1min, the content of available bromine in the waters was 100mg / L.

[0019] Before spraying, collect water samples from the surface to a depth of 10 cm, and detect that the density of microcystins in them is 0.3 μg / L. After 10 minutes, collect water samples from the surface to a depth of 10 cm, and detect that the density of microcystins in them is less than 0.001μg / L.

[0020] Dibromohydantoin continuously releases Br-ions in water to form hypobromous acid (HOBr), and the reaction formula is: C 5 h 6 N 2 o 2 Br 2 +2H 2 O→C 5 h 8 N 2 o 2 +2HOBr. Hypobromous acid can oxidize and decompose the microcystins produced after the death of algae to lose effect, and play a ...

Embodiment 2

[0022] Prepare dibromohydantoin solution with a concentration of 10000mg / L, and use a sprayer to spray the dibromohydantoin solution to the waters polluted by microcystin. The spraying amount of the dibromohydantoin solution is 300ml / m 2 . After the dibromohydantoin solution was sprayed into the waters for 60 minutes, the content of available bromine in the waters was 0.1 mg / L.

[0023] Before spraying, collect water samples from the surface to a depth of 10 cm, and detect that the density of microcystins in them is 0.3 μg / L. After 10 minutes, collect water samples from the surface to a depth of 10 cm, and detect that the density of microcystins in them is less than 0.001μg / L. Dibromohydantoin can continuously release Br-ions in water to form hypobromous acid (HOBr), and the reaction formula is: C 5 h 6 N 2 o 2 Br 2 +2H 2 O→C 5 h 8 N 2 o 2 +2HOBr. Hypobromous acid can oxidize and decompose the microcystins produced after the death of algae to lose effect, and play ...

Embodiment 3

[0025] Prepare dibromohydantoin solution with a concentration of 5000mg / L, and use a sprayer to spray the dibromohydantoin solution to the waters polluted by microcystin. The spraying amount of the dibromohydantoin solution is 200ml / m 2 . After the dibromohydantoin solution was sprayed into the waters for 30 minutes, the content of available bromine in the waters was 50 mg / L.

[0026] Before spraying, collect water samples from the surface to a depth of 10 cm, and detect that the density of microcystins in them is 0.3 μg / L. After 10 minutes, collect water samples from the surface to a depth of 10 cm, and detect that the density of microcystins in them is less than 0.001μg / L. Dibromohydantoin can continuously release Br-ions in water to form hypobromous acid (HOBr), and the reaction formula is: C 5 h 6 N 2 o 2 Br 2 +2H 2 O→C 5 h 8 N 2 o 2 +2HOBr. Hypobromous acid can oxidize and decompose the microcystins produced after the death of algae to lose effect, and play a ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for removing Microcystin-LR in water body by using bromides, which is characterized by comprising the following steps: preparing a 1,3-Dibromo-5,5-dimethylhydantoin solution with the concentration of 100-10000 mg / L, and spraying the 1,3-Dibromo-5,5-dimethylhydantoin solution to a Microcystin-LR polluted water area by using a spraying machine, wherein the spray amount of the 1,3-Dibromo-5,5-dimethylhydantoin solution is 100-300 ml / m<2>; and 1-60 minutes after spraying the 1,3-Dibromo-5,5-dimethylhydantoin solution to the water area, the content of effective bromine in the water area is 0.1-100 mg / L. The invention has strong effect on removing the Microcystin-LR by utilizing the reaction activity of 1,3-Dibromo-5,5-dimethylhydantoin, and can not produce secondary pollution, or teratogenetic, cancerigenic and mutagenic products. The method has the advantages of high removal rate, high toxicological safety, low investment and strong operability, and can be used for removing the Microcystin-LR in the water body.

Description

technical field [0001] The invention relates to a method for removing microcystin in water by bromide, and belongs to the technical field of water treatment. Background technique [0002] The pollution of water environment in China is becoming more and more serious. Due to the discharge of many industrial waste water and domestic sewage all the year round, a large amount of chemical fertilizers are used in agricultural production, and large-scale seine and dams are used for multiple breeding, which reduces the self-purification ability of water bodies and serious eutrophication of water bodies. , greatly promoting the growth and reproduction of algae. The massive reproduction of algae in the eutrophic water body eventually causes the outbreak of algae bloom, which has brought serious harm to the ecological water system; the water quality is dirty and smelly, and the transparency is reduced. The highly toxic microcystins have seriously affected the health of the people. The...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C02F1/50
Inventor 马玉林严振坤
Owner WUXI MEIHUA CHEM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com