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A kind of manganese-carbon catalytic inner electrolytic filler and its preparation method and application

A technology of internal electrolysis and manganese carbon, which is applied in the direction of chemical instruments and methods, water treatment parameter control, multi-stage water treatment, etc., can solve the problems of difficulty in increasing the removal rate, packing compaction, and affecting the treatment effect, so as to improve the chemical reaction rate , high COD removal rate, rapid and thorough response

Inactive Publication Date: 2016-01-06
深圳武汉理工大研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the uneven mixing of iron and carbon, the traditional internal electrolysis method has the problems of hardening and passivation of the filler. Process interruption, affecting treatment effect
On the other hand, it is difficult to achieve 60% removal rate of COD by using electrolytic packing in iron-carbon, which does not achieve the expected effect for high-concentration organic wastewater. The reason may be in the electrolytic reaction in iron-carbon , Fe at the anode loses electrons and generates Fe 2+ , the potential potential of the anode is 0.44v, and the potential difference with the cathode is small, making it difficult for electrons to move rapidly, which eventually leads to difficulty in increasing the removal rate

Method used

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  • A kind of manganese-carbon catalytic inner electrolytic filler and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Mix 75g of manganese ore waste and 75g of activated carbon, grind them, and pass through a 100-130 mesh sieve. Then add kaolin 40g, coal powder 15g, mix and stir evenly. Slowly shake it after adding a certain amount of water to form spherical particles with a particle size of 1-2 mm. Then put it into a muffle furnace and gradually raise the temperature to 70-80°C at a rate of 3-5°C / min, continue drying for 20 minutes, steam the water out, and finally sinter the above-mentioned manganese-carbon material at 1100°C under the condition of nitrogen filling for 2 hours, and roast After the completion, the packing is taken out and cooled to obtain the manganese-carbon catalytic inner electrolytic packing with a specific surface area of ​​1.30m 2 / g, the porosity is 66%. 200ml solution with COD concentration of 3000mg / L, adjust the pH to 3, put 200g of manganese carbon electrolytic material into it, after aeration for 2 hours, adjust the pH to 8, remove the supernatant to mea...

Embodiment 2

[0042]Mix 75g of manganese ore waste and 75g of activated carbon, grind them, and pass through a 100-130 mesh sieve. Then add kaolin 40g, coal powder 15g, mix and stir evenly. Slowly shake it after adding a certain amount of water to form spherical particles with a particle size of 3-5 mm. Then put it into a muffle furnace and gradually raise the temperature to 70-80°C at a rate of 3-5°C / min, continue drying for 20 minutes, steam the water out, and finally sinter the above-mentioned manganese-carbon material at 1100°C under the condition of nitrogen filling for 2 hours, and roast After the completion, the packing is taken out and cooled to obtain the manganese-carbon catalytic inner electrolytic packing with a specific surface area of ​​1.13m 2 / g, the porosity is 65%. 200ml solution with COD concentration of 3000mg / L, adjust the pH to 3, put 200g of manganese carbon electrolytic material into it, after aeration for 2 hours, adjust the pH to 8, remove the supernatant to meas...

Embodiment 3

[0044] Mix 75g of manganese ore waste and 60g of activated carbon, grind them, and pass through a 100-130 mesh sieve. Then add kaolin 40g, coal powder 15g, mix and stir evenly. Slowly shake it after adding a certain amount of water to form spherical particles with a particle size of 1-2 mm. Then put it into a muffle furnace and gradually raise the temperature to 70-80°C at a rate of 3-5°C / min, continue drying for 20 minutes, steam the water out, and finally sinter the above-mentioned manganese-carbon material at 1100°C under the condition of nitrogen filling for 2 hours, and roast After the completion, the packing is taken out and cooled to obtain the manganese-carbon catalytic inner electrolytic packing with a specific surface area of ​​1.28m 2 / g, the porosity is 65%. 200ml solution with COD concentration of 3000mg / L, adjust the pH to 3, put 200g of manganese carbon electrolytic material into it, after aeration for 2 hours, adjust the pH to 8, remove the supernatant to mea...

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Abstract

The invention relates to manganese charcoal catalytic internal electrolysis filler as well as a preparation method and an application thereof. The internal electrolysis filler is prepared from manganese ore wastes, activated charcoal, an adhesive and a pore-foaming agent, wherein the mass percent of the manganese ore wastes is 40-65%, the mass percent of the activated charcoal is 35-60% and the sum of mass percents of the manganese ore wastes and the activated charcoal is 100%. The method comprises the following steps: grinding the manganese ore wastes; adding the activated charcoal, the adhesive and the pore-foaming agent; putting into a muffle furnace after balling to be roasted for 2-3 hours at 1100 DEG C; and preparing a final product. Meanwhile, the application comprises the following steps: using the final product in high concentration organic wastewater; aerating for 2 hours; and removing organic matters. The filler provided by the invention has the beneficial effects that a novel catalytic internal electrolysis filler is prepared by applying the manganese ore waste, so that the method is convenient to operate, treats wastes by wastes, and is energy-saving, good in removal effect of organic matters, strong in practicality and wide in prospect.

Description

technical field [0001] The invention relates to a manganese-carbon catalyzed internal electrolytic filler and its preparation method and application, belonging to the field of sewage treatment control, especially the field of high-concentration organic waste water pretreatment. Background technique [0002] Industrial wastewater, especially high-concentration organic wastewater, is an important source of pollution that endangers my country's ecological environment. Its COD is generally above 2000mg / L, and some even reach tens of thousands or even hundreds of thousands. Its biodegradability is poor, its components are complex, its emission is large, and its treatment is difficult, so it needs to be solved urgently. [0003] For refractory organic wastewater, currently the combination of physical, chemical pretreatment and biochemical treatment is mainly adopted, including coagulation sedimentation, adsorption, air flotation, extraction, membrane technology, etc., and there ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461C02F9/14
CPCC02F1/461C02F1/66C02F9/00C02F2101/30C02F2209/06C02F2301/08
Inventor 李孟闫爱萍张斌
Owner 深圳武汉理工大研究院有限公司
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