Aerobic biomineralization method of bromamine acid

An aerobic biological, bromo-amino acid technology, applied in chemical instruments and methods, sustainable biological treatment, biological water/sewage treatment, etc. The effect of shock load capacity, enhanced salt and poison resistance, and simple process operation

Inactive Publication Date: 2009-03-25
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main problem in the biological decolorization of bromine is that the COD removal rate only reaches about 50% after decolorization, and the main decolorization product is 2-amino-3-hydroxy-5-bromobenzenesulfonic acid, which will gradually form under aerobic conditions The yellow autoxidation product is difficult to further degrade, thus hindering the complete biomineralization of bromine

Method used

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  • Aerobic biomineralization method of bromamine acid
  • Aerobic biomineralization method of bromamine acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Enhanced aerobic biomineralization of bromine with activated carbon felt

[0029] [1] The high-efficiency adsorption material used is viscose-based activated carbon felt, each piece 3×3×3mm 3 , with a surface area of ​​800m2 / g, and its morphology features are as follows figure 1 shown. Rinse the activated carbon felt with water for 3 times, add water to boil for 0.5h, soak in water for 12h, rinse with water, dry the cleaned activated carbon felt at 120°C and take it out for use.

[0030] [2] Domestication of degrading microorganisms

[0031] In the aerobic bioreactor, add the above-mentioned activated carbon felt according to the dosage rate of 15% (v / v), and inoculate the microorganisms as activated sludge, and its concentration in the reactor is 3g / L.

[0032] The influent is bromic acid simulated wastewater, and its composition is bromic acid 300mg / L, (NH 4 ) 2 SO 4 、Na 2 HPO 4 、KH 2 PO 4 , trace CaCl 2 , MgSO 4 , FeCl 3 . COD:N:P=100:5:1, pH value is 7...

Embodiment 2

[0038] Granular activated carbon enhanced aerobic biomineralization of bromine

[0039] [1] Activated carbon chooses coconut shell granular activated carbon, its iodine adsorption value> 1000mg / g, humidity ≤ 10%, strength ≥ 96%, packing density 0.46-0.54g / mL, particle size 0.9-1.6mm, pH 6.5-8.5 . Rinse the activated carbon with water for 5 times, add water to boil for 1 hour, soak in water for 24 hours, then rinse with water, dry the cleaned activated carbon at 105°C and take it out for use.

[0040] [2] Domestication of degrading microorganisms

[0041] In the aerobic bioreactor, add the above-mentioned activated carbon according to the dosage rate of 20% (v / v), and inoculate the microorganisms as activated sludge, and its concentration in the reactor is 3g / L.

[0042] The influent is bromic acid simulated wastewater, and its composition is bromic acid 300mg / L, (NH 4 ) 2 SO 4 、Na 2 HPO 4 、KH 2 PO 4 , trace CaCl 2 , MgSO 4 , FeCl 3 . COD:N:P=100:5:1, pH value is 7...

Embodiment 3

[0048] Enhancement of aerobic biomineralization of bromine by decolorizing bacteria and activated carbon felt

[0049][1] Select and pretreat activated carbon felt according to Example 1

[0050] [2] Domestication of degrading microorganisms

[0051] In the aerobic bioreactor, add the above-mentioned activated carbon felt according to the dosage rate of 18% (v / v), and the inoculation microorganism is activated sludge+6% (w / w) bromamide decolorizing bacteria, and the concentration of the inoculation microorganism in the reactor is It is 3.5g / L.

[0052] The influent is bromic acid simulated wastewater, and its composition is bromic acid 400mg / L, (NH 4 ) 2 SO 4 、Na 2 HPO 4 、KH 2 PO 4 , trace CaCl 2 , MgSO 4 , FeCl 3 . COD:N:P=100:5:1, pH value is 7.0.

[0053] Sludge acclimatization is carried out in batch mode. Dilute the original influent 4 times as the initial influent. Whenever the COD removal rate in the influent reaches 85% or more, gradually increase the con...

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Abstract

The invention relates to a method of mineralization of aerobiont of bromamine acid, belonging to the technical field of water treatment of environmental engineering. The method is characterized in that high-efficiency absorbing material is added into an aerobiont reactor, and not only can be used as carrier fixed microorganism but also can be used as decolorizing products so as to lead the decolorizing products in liquid phase to keep lower concentration; and in the regeneration process of in-situ or of the absorbing material, the degradation rate of the decolorizing products is larger than the autooxidation rate thereof, thus effectively avoiding the autooxidation of the decolorizing products and leading the bromamine acid to be mineralized completely. The method of mineralization of aerobiont of bromamine acid has the effects and benefits that the used high-efficiency absorbing material has wide source and simple and convenient technological operation, effectively solves the problem that the complete biodegradation is blocked by autooxidation products hard to degrade formed in the decolorization of the aerobiont of the bromamine acid, provides an aerobic mineralization of the bromamine acid technology being economic and high efficiency and has wide application prospect in the treatment of the waste water of anthraquinone dye and intermediates thereof.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering water treatment and relates to a method for aerobic biomineralization of bromic acid. Background technique [0002] Bromonic acid, the scientific name is 1-amino-4-bromoanthraquinone-2-sulfonic acid, is an important intermediate of anthraquinone dyes, widely used in the synthesis of anthraquinone-type disperse dyes, reactive dyes and acid anthraquinone dyes Wait. Bromic acid is red, soluble in water, and is a refractory organic compound. Bromonic acid often exists in the wastewater of anthraquinone dyes and its intermediates, which can cause serious public health and environmental problems. [0003] The treatment methods of bromic acid wastewater mainly include physical method, chemical method, biological method and the combination of these methods. Because the biological method has the advantages of simple operation, low operating cost and no secondary pollution, it is the pr...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F1/68C02F3/12
CPCY02W10/10
Inventor 王竞张伟张禄艳周集体吕红金若菲
Owner DALIAN UNIV OF TECH
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