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A kind of defluoridation material based on bacteria residue and its regeneration method

A technology of fluorine material and fungus residue, which is applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., to achieve the effect of reducing the cost of defluorination, fast defluorination, and increasing defluorination capacity.

Active Publication Date: 2021-09-07
湖南烯富环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, there has been no relevant technical report on the use of fungal residue as a defluoridation material

Method used

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  • A kind of defluoridation material based on bacteria residue and its regeneration method

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Embodiment 1

[0048] 1. A defluoridation material based on oxytetracycline slag and lanthanum nitrate and its regeneration

[0049] (1) The preparation steps of the defluoridation material based on oxytetracycline slag are as follows

[0050] The first step: dry and grind oxytetracycline

[0051] Bake the oxytetracycline residue in an oven at 100°C for 12 hours to obtain dry residue, and then place the dried residue in a ball mill for ball milling for 6 hours to obtain powder with an average particle size of 10 μm;

[0052]The second step: preparation of slurry containing finely ground oxytetracycline slag powder and soluble rare earth salt

[0053] Take respectively ground oxytetracycline slag powder and lanthanum nitrate by mass ratio 1:0.1, mix the two together to obtain mixed powder;

[0054] Add the mixed powder into deionized water according to the solid-to-liquid ratio of 1:5, and then stir at 50°C for 2 hours to obtain a slurry;

[0055] Step 3: Add NaOH and evaporate to dryness ...

Embodiment 2

[0068] A kind of defluoridation material based on mixed bacteria residue / lanthanum nitrate / cerium chloride and its regeneration

[0069] (1) Preparation of defluoridation material based on mixed bacteria residue / lanthanum nitrate / cerium chloride, comprising the following steps:

[0070] The first step: dry and grind the mixed bacteria residue

[0071] Put the oxytetracycline residues, penicillin residues and cephalosporin residues taken from antibiotic production enterprises with no fixed ratio in an oven at 80°C for 36 hours to obtain dry mixed residues, and then put the dried residues in a ball mill Medium ball milling for 12 hours to obtain fungal residue powder with an average particle size of about 20um;

[0072] Step 2: Prepare a slurry containing finely ground mixed bacterial slag powder and soluble rare earth salt

[0073] First, weigh lanthanum nitrate and cerium chloride according to the mass ratio of 1:2 to obtain mixed rare earth; At 5:1; followed by stirring at...

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Abstract

The invention discloses a fungus residue-based defluoridation material and a regeneration method thereof. The optimized preparation method of the defluoridation material includes the steps of drying and grinding the bacterial slag, preparing the slurry containing the ground bacterial slag powder and soluble rare earth salt, adding inorganic alkali and evaporating to dryness, high-temperature calcination, washing and drying; The regeneration method includes the steps of rinsing the defluorinated material in dilute acid, and hydrothermally treating the fluoride-removed slag after rinsing in a solution prepared by alkali metal carbonate and inorganic alkali. The composite fluorine removal material provided by the present invention can efficiently remove fluorine in general industrial wastewater, especially for the removal of fluorine in zinc sulfate electrolyte in zinc hydrometallurgy. Low and recyclable features.

Description

technical field [0001] The present invention relates to a fluorine removal material based on bacterial residue and its regeneration method; in particular, it relates to a fluoride removal material based on antibiotic slag and its regeneration method. The fluorine removal material can efficiently remove fluorine in general industrial wastewater, especially for The removal effect of fluorine in zinc sulfate electrolyte in zinc hydrometallurgy is obvious. It belongs to the technical field of water treatment. Background technique [0002] my country's fluorine chemical industry, iron and steel production, aluminum electrolysis and aluminum processing, acid production and sulfide-containing fertilizer production, glass product manufacturing and processing, non-ferrous metal smelting and other industries produce a large amount of fluorine-containing wastewater every year. The fluorine content in water and groundwater also seriously exceeds the standard. The existence of high fluo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F101/14
CPCB01J20/06B01J20/20C02F1/281C02F1/283C02F2101/14
Inventor 王辉周向阳周向清葛金月周进辉
Owner 湖南烯富环保科技有限公司
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