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Preparation method of heavy metal sewage treatment agent

A sewage treatment agent and heavy metal technology, which is applied in water/sewage treatment, adsorption water/sewage treatment, light water/sewage treatment, etc. It can solve the problems of difficulty in the cultivation of microbial strains, large amount of sediment, and small treatment capacity in biological methods , to achieve good sewage treatment effect, good adsorption capacity and strong adsorption effect

Inactive Publication Date: 2017-05-31
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the treatment methods of heavy metal sewage at home and abroad mainly include chemical precipitation method, ion exchange method, biological method, electrolysis method, membrane separation technology, adsorption method, etc. Chemical precipitation method is one of the relatively mature heavy metal sewage treatment methods. The speed is fast, but the concentration of heavy metal ions in sewage is high, the amount of sediment is large, the water content is high, the cost is high, and it is easy to cause secondary pollution. The activated carbon adsorption method and ion exchange method have high material costs and complicated processes. The electrolytic method requires heavy metal ions to ion concentration. High, high cost, high energy consumption and small processing capacity, but it meets the requirements of low-carbon society. The biological method is difficult to cultivate microbial strains, takes a long time to process, and is easy to cause biological pollution. In the current stage of heavy metal treatment methods, each has its own advantages and disadvantages. Therefore, on this basis, it is of great significance to improve the production method of wastewater treatment agents and develop sewage treatment agents with low environmental pollution, low cost and good sewage treatment effect.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation method for a heavy metal sewage treatment agent, comprising the steps of:

[0023] (1) Preparation of microfluidic chip: the chip adopts a three-plate structure, the thickness of the three plates is 1mm, the width of the main channel of the substrate is 3mm, the width of the focusing channel is 500μm, and the diameter of the upper cover plate and the lower bottom plate is 3mm;

[0024] (2) Water-in-oil (O / W) system is adopted in conjunction with the inverse emulsification method, and the water phase system is that the bagasse cellulose with a mass fraction of 2% is dissolved in the ratio of bagasse cellulose to sodium hydroxide per 1 g of bagasse cellulose Dissolve in 10ml of sodium hydroxide solution in 0.3mol / L sodium hydroxide solution and stir for 2 hours, let stand, remove excess sodium hydroxide solution, and mix bagasse cellulose after sodium hydroxide treatment with bagasse cellulose and The mass ratio of carbon disulfide is 1:4. Add carbon disulfi...

Embodiment 2

[0030] A preparation method for a heavy metal sewage treatment agent, comprising the steps of:

[0031] (1) Preparation of microfluidic chip: the chip adopts a three-plate structure, the thickness of the three plates is 1mm, the width of the main channel of the substrate is 3mm, the width of the focusing channel is 500μm, and the diameter of the upper cover plate and the lower bottom plate is 3mm;

[0032] (2) Water-in-oil (O / W) system is adopted in conjunction with the inverse emulsification method, and the water phase system is that the bagasse cellulose with a mass fraction of 2% is dissolved in the ratio of bagasse cellulose to sodium hydroxide per 1 g of bagasse cellulose Dissolve in 0.1mol / L sodium hydroxide solution in a ratio of 10ml sodium hydroxide solution, stir for 3 hours, let stand, remove excess sodium hydroxide solution, and mix bagasse cellulose after sodium hydroxide treatment with bagasse cellulose and The mass ratio of carbon disulfide is 1:1. Add carbon di...

Embodiment 3

[0038] A preparation method for a heavy metal sewage treatment agent, comprising the steps of:

[0039] (1) Preparation of microfluidic chip: the chip adopts a three-plate structure, the thickness of the three plates is 1mm, the width of the main channel of the substrate is 3mm, the width of the focusing channel is 500μm, and the diameter of the upper cover plate and the lower bottom plate is 3mm;

[0040] (2) Water-in-oil (O / W) system is adopted in conjunction with the inverse emulsification method, and the water phase system is that the bagasse cellulose with a mass fraction of 2% is dissolved in the ratio of bagasse cellulose to sodium hydroxide per 1 g of bagasse cellulose Dissolve in 0.5mol / L sodium hydroxide solution in a ratio of 10ml sodium hydroxide solution, stir for 1 hour, let stand, remove excess sodium hydroxide solution, and mix bagasse cellulose after sodium hydroxide treatment with bagasse cellulose and The mass ratio of carbon disulfide is 1:5. Add carbon dis...

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Abstract

The invention discloses a preparation method of a heavy metal sewage treatment agent. A microfluidic technology is used; emulsification and crosslinking reactions are combined; nanometer titanium dioxide and gamma-ferric oxide are added for preparing a bagasse cellulose xanthic acid vinegar microsphere adsorbent. The bagasse cellulose is used as a raw material of the adsorbent; the cost is low; the secondary pollution cannot be caused on the environment. The contained nanometer titanium dioxide and gamma-ferric oxide have strong adsorption effects on heavy metal ions in heavy metal sewage; meanwhile, organic matters in the sewage can be decomposed; the adsorption performance and the photocatalysis performance are realized at the same time. The adsorbent prepared by the method provided by the invention has the advantages that the dispersibility is high; the adsorption volume is good; the sewage treatment effect is good.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a preparation method of a heavy metal sewage treatment agent. Background technique [0002] At present, the treatment methods of heavy metal sewage at home and abroad mainly include chemical precipitation method, ion exchange method, biological method, electrolysis method, membrane separation technology, adsorption method, etc. Chemical precipitation method is one of the relatively mature heavy metal sewage treatment methods. The speed is fast, but the concentration of heavy metal ions in sewage is high, the amount of sediment is large, the water content is high, the cost is high, and it is easy to cause secondary pollution. The activated carbon adsorption method and ion exchange method have high material costs and complicated processes. The electrolytic method requires heavy metal ions to ion concentration. High, high cost, high energy consumption and small processi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F13/00B01J20/24B01J23/745C02F1/28C02F1/30B01J20/30C08J3/24C08L1/22C02F101/20C02F101/30
CPCB01J20/06B01J20/24C02F1/288C02F1/30C08J3/24B01J23/745C02F2101/20C02F2101/30C08J2301/22B01F33/3012B01J35/39
Inventor 张玉华
Owner GUANGXI UNIV