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Sewage treatment agent, and preparation method and application thereof

A technology of sewage treatment agent and auxiliary agent, which is applied in water/sewage treatment, adsorbed water/sewage treatment, water/sludge/sewage treatment, etc. The effect of large amount and improving adsorption rate

Inactive Publication Date: 2014-06-18
西安泽源湿地科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Although biological enzymes usually have the advantages of harmlessness, stability, and high efficiency, they have high requirements on pH, temperature, solvents, etc., and are not easy to store, which greatly limits their wide application in wastewater treatment.

Method used

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  • Sewage treatment agent, and preparation method and application thereof
  • Sewage treatment agent, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0049] Coated nano-Fe 3 O 4 Granule preparation

[0050] (1) Weigh 2.0 g FeCl 2 4H 2 O and 6 g FeCl 3 ·6H 2 O was placed in a three-necked flask, added 400 g of diethylene glycol, stirred to dissolve the two, then 2.5 g of NaOH was dissolved in 120 g of diethylene glycol, slowly added dropwise to the above-mentioned three-necked flask, stirred at room temperature for 2 h, and then The temperature was raised to 230°C within 1.5 h, and the reaction was carried out at this temperature for 2 h, and then cooled to room temperature. A black solid was obtained by centrifugation, and the black solid was washed successively with a mixed solution of ethanol / ethyl acetate at a volume ratio of 1:1, ethanol and deionized water, and the obtained black solid was dried in a vacuum oven at 50 °C for 6 h , to obtain the base core nano-Fe 3 o 4 Particles, observed by electron microscope, have an average particle size of about 10 nm.

[0051] (2) 50 mg base-core nano-Fe 3 o 4 ...

preparation example 2

[0055] Laccase coated nano Fe 3 O 4 immobilization on particles

[0056] SiO obtained above 2 Coated nano-Fe 3 o 4 50 mg of particles were dispersed in 60 mL of deionized water under ultrasonic conditions, then 30 mg of laccase (E.C.1.10.3.2) and 4 mL of 50 mmol / L succinic acid buffer solution were added, and after stirring for 3 hours, 5 mL of 2.5% succinic acid was added dropwise. Aqueous glutaraldehyde solution was used as a cross-linking agent, stirred at room temperature for 8 h in an argon atmosphere, then placed on a magnet, poured out the supernatant, and separated to obtain a black solid, which was washed with deionized water until the washing liquid had no UV absorption , and the resulting solid was vacuum-dried at room temperature for 12 h to obtain laccase-immobilized SiO 2 Coated nano-Fe 3 o 4 particles.

[0057] In addition to the above "SiO 2 Coated nano-Fe 3 o 4 particles" replaced with "TiO 2 Coated nano-Fe 3 o 4 Particles”, obtained lac...

Embodiment 1

[0061] Weigh out laccase-immobilized SiO 2 Coated nano-Fe 3 o 4 Mix 100 mg of particles, 10 mg of copper particles with a particle size of 100 nm, and 5 mg of additives evenly. The additives include 4 mg of calcium carbonate and 1 mg of magnesium carbonate to obtain a sewage treatment agent. The sample number is 1.

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Abstract

The invention relates to a sewage treatment agent, and a preparation method and application thereof. The sewage treatment agent comprises nanoscale Fe3O4 particles coated by SiO2 or TiO2, aids and additives, wherein biological enzymes are immobilized on the surfaces of the nanoscale Fe3O4 particles. The sewage treatment agent has excellent purification and treatment performance on heavy metals, organic pollutants and arsenic-containing polluted wastewater, and has a good social value and environment-friendly application potential.

Description

technical field [0001] The invention relates to a sewage treatment agent, in particular to a 3 o 4 The invention relates to a sewage treatment agent of particles, auxiliary agents and additives, and also relates to the application of said treatment agent in the treatment of waste water containing heavy metal ions, phenolic pollutants or arsenic, belonging to the field of environmental protection and treatment. Background technique [0002] With the improvement of people's living standards in our country and the rapid acceleration of the urbanization process, the growth rate of various wastewater such as industrial wastewater and domestic sewage is astonishing, and the amount is huge. According to incomplete statistics, the industrial wastewater with high heavy metal content produced in my country every year amounts to hundreds of millions of tons. The organic pollutants and heavy metals in these industrial wastewater, such as phenols, dyes, cadmium, chromium, mercury, etc.,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/00C02F1/28C02F1/58
Inventor 张文鸽章方军
Owner 西安泽源湿地科技股份有限公司
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