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Lake water ecological environment restoration method

A technology for ecological environment and lake water, applied in chemical instruments and methods, water pollutants, adsorbed water/sewage treatment, etc., can solve problems such as high cost of reagents and equipment, high difficulty in recovery, complicated and lengthy operation process, etc., to achieve guaranteed Effect of water quality, cost saving, good adsorption performance

Inactive Publication Date: 2019-06-21
皖建生态环境建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods all have problems such as complex and lengthy operation process, high cost of reagents and equipment, and high difficulty in recycling.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A lake water eco-environment restoration method comprises the steps of dividing the lake into several blocks with partitions, and then putting carbon aerogel A and nano film B into the blocks and reacting for 12 hours.

[0047] The mass-to-volume ratio of the dosage of carbon airgel A to the amount of treated water is 0.5 g / L. The mass-to-volume ratio of the dosage of the nano-film B to the amount of treated water is 0.5 g / L.

[0048] The preparation method of carbon airgel A:

[0049] (1) Mix 50 parts of formaldehyde and 25 parts of melamine, stir at 100 rpm, add triethanolamine dropwise until the pH value is 9.5, connect it to a reflux condenser and heat to 60°C, after heating for 30 minutes, a prepolymer solution is obtained.

[0050] (2) Dissolve 1 part of lignin in 20 parts of pure water and prepolymer solution, then add 37%wt ammonia water to adjust the pH of the solution to 11, stir at 50rpm for 10min, add 0.1mol / L hydrochloric acid dropwise to adjust the pH of ...

Embodiment 2

[0059] A lake water eco-environment restoration method comprises the steps of dividing the lake into several blocks with partitions, and then putting carbon aerogel A and nano film B into the blocks and reacting for 12 hours.

[0060] The mass-to-volume ratio of the dosage of carbon airgel A to the amount of treated water is 5g / L. The mass-to-volume ratio of the dosage of nano-film B to the amount of treated water is 5g / L.

[0061] The preparation method of carbon airgel A:

[0062] (1) Mix 50 parts of formaldehyde and 25 parts of melamine, stir at 100 rpm, add triethanolamine dropwise until the pH value is 9.5, connect it to a reflux condenser and heat to 60°C, after heating for 30 minutes, a prepolymer solution is obtained.

[0063] (2) Dissolve 1 part of lignin in 20 parts of pure water and prepolymer solution, then add 37%wt ammonia water to adjust the pH of the solution to 11, stir at 50rpm for 10min, add 0.1mol / L hydrochloric acid dropwise to adjust the pH of the soluti...

Embodiment 3

[0072] A lake water eco-environment restoration method comprises the steps of dividing the lake into several blocks with partitions, and then putting carbon airgel A and nano film B into the blocks for 24 hours of reaction.

[0073] The mass-to-volume ratio of the dosage of carbon airgel A to the amount of treated water is 0.5 g / L. The mass-to-volume ratio of the dosage of the nano-film B to the amount of treated water is 0.5 g / L.

[0074] The preparation method of carbon airgel A:

[0075] (1) Mix 100 parts of formaldehyde and 50 parts of melamine, stir at 100 rpm, add triethanolamine dropwise until the pH value is 9.5, connect to a reflux condenser and heat to 60°C, and after heating for 30 minutes, a prepolymer solution is obtained.

[0076] (2) Dissolve 10 parts of lignin in 20 parts of pure water and prepolymer solution, then add 37%wt ammonia water to adjust the pH of the solution to 11, stir at 50rpm for 10min, add 0.1mol / L hydrochloric acid dropwise to adjust the pH o...

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PUM

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Abstract

The invention provides a lake water ecological environment restoration method and belongs to the field of water ecological environment restoration. The lake water ecological environment restoration method overcomes the defects that traditional methods are complex to operate, the cost is high, recovery is difficult and the like. The lake water ecological environment restoration method comprises thesteps as follows: a lake is divided into several blocks by partition boards, and then, carbon aerogel A and a nano-film B are put in the blocks to react for 12-24 h, wherein the carbon aerogel A is prepared from lignin, formaldehyde, melamine, triethanolamine, toluene and purified water; the nano-film B is prepared from a titanate nanosheet and a fibroin solution. The lake water ecological environment restoration method can effectively adsorb organic solvents and heavy metal ions Pb<2+> and Hg<2+> in the lake. The nano-film B has good adsorption capacity and is safe and effective.

Description

technical field [0001] The invention belongs to the field of restoring the ecological environment of water, in particular to a method for restoring the ecological environment of lakes. Background technique [0002] As the world's population continues to increase, agricultural and industrial activities are increasingly frequent, resulting in a serious increase in environmental pollutants. [0003] Among the factors that destroy the ecological environment of lake water, heavy metals and organic matter are the most important. Heavy metals in lakes will affect the growth of aquatic organisms and accumulate in living organisms, affecting the ecological environment while affecting the food chain, thereby affecting human health. [0004] At present, the methods for removing heavy metal ions in polluted waters mainly include chemical precipitation, membrane filtration, reverse osmosis, biosorption, and electrowinning. The methods for removing organic solvents in polluted waters ma...

Claims

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Application Information

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IPC IPC(8): C02F1/28B01J20/20B01J20/24B01J20/28B01J20/30C02F101/20C02F101/30
Inventor 杨晨徐建文殷情李浩
Owner 皖建生态环境建设有限公司
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