Production method of spherical iron-carbon micro-electrolysis filler

An iron-carbon micro-electrolysis and spherical technology, which is applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc. Interruption of the electrolysis process and other problems, to achieve the effect of being conducive to biofilm formation, fast processing reaction speed, and ensuring the agglomeration and passivation of fillers

Active Publication Date: 2015-04-08
刘达苏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the iron particles in the iron-carbon bed are not uniformly dispersed, the iron particles are prone to rust and harden, which makes it easy to cause hardening during use, which will not only cause the interruption of the micro-electrolysis process and affect the treatment effect, but also frequent The replacement of micro-electrolysis materials requires a large workload and high cost, which reduces the efficiency of wastewater treatment
At present, people mix and press crushed iron filings with activated carbon and binders or elongate into long-grained drying and then roast to make oblate micro-electrolytic filler

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1, the spherical iron-carbon micro-electrolytic filler of the present invention is made of 78wt% iron fine powder, 13wt% coal powder, 1.5wt% bentonite, 7wt% borax and 0.5%wt% platinum-titanium dioxide The meta-catalyst is a raw material, and is prepared by the following method:

[0023] A, 150 mesh and 65.5% ferric iron tetroxide content iron powder, 150 mesh coal powder, bentonite, borax and platinum-titanium binary catalyst are mixed and stirred in proportion to make a mixture,

[0024] B. Send the mixed material into the pelletizing trough, pass through the pelletizing machine and spray water with 9-10% of the weight of the above mixed material, and pelletize into pellets of φ3-15 mm.

[0025] C. Dry the pellets until the water content is less than 2%.

[0026] D. Then put the dried pellets into high temperature resistant steel bowls respectively, cover and seal the steel bowls,

[0027] E. Put the sealed steel bowl into the kiln, raise the temperature t...

Embodiment 2

[0031] Embodiment 2, the spherical iron-carbon micro-electrolytic filler of the present invention is made of 77wt% iron fine powder, 15wt% coal dust, 2wt% bentonite, 5wt% borax and 1%wt% copper-rhodium binary catalyst as raw material, and prepared as follows:

[0032] A, with 200 orders and iron ferric oxide content is 67.3% fine iron powder, 150 order coal dust, bentonite, borax and copper-rhodium binary catalyst mix and stir in proportion to make compound,

[0033] B. Send the mixed material into the pelletizing trough, pass through the pelletizing machine and spray water with 9-10% of the weight of the above mixed material, and pellet it into pellets of φ15-30 mm.

[0034] C. Dry the pellets until the water content is less than 2%.

[0035] D. Then put the dried pellets into the high temperature resistant steel bowl, cover and seal the steel bowl,

[0036] E. Put the sealed steel bowl into the kiln, raise the temperature to 1000-1080°C and keep it warm for 3-4 hours, then...

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PUM

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Abstract

The invention discloses a production method of spherical iron-carbon micro-electrolysis filler. With 75-80wt% of powered iron, 12-15wt% of pulverized coal, 1-2wt% of bentonite, 5-8wt% of borax and 0.1-1wt% of metal catalyst as raw materials, the method comprises the following steps: mixing the powered iron and pulverized coal with the bentonite, borax and metal catalyst and stirring into a mixture; feeding the mixture into a pelletizing machine and spraying in water accounting for 9-10% of the mixture by weight; pelletizing a spherical green body, drying and putting into a high temperature resistant steel bowl; putting the steel bowl into a kiln; heating to 1,000-1,080 DEG C and preserving heat for 2-4 hours; and cooling and discharging. In the invention, the spherical iron-carbon micro-electrolysis filler has a honeycomb-shaped hole structure inside, and the hardening and passivation of the filler can be effectively prevented; wastewater can be quickly absorbed through capillary pores inside, thereby improving the reaction efficiency; and micro-current is formed by use of the iron-carbon potential difference generated by micro-electrolysis to stimulate the generation of nascent hydrogen and oxygen in wastewater, so that strong redox reaction of the wastewater occurs, the hardly-degradable matters are converted into easily-degradable matters, and thus the aim of sewage treatment is achieved.

Description

technical field [0001] The invention relates to sewage treatment materials, in particular to a production method for iron-carbon micro-electrolytic fillers for sewage treatment. Background technique [0002] The wastewater produced by industries such as metallurgical coking, electroplating, power generation, papermaking, medicine and printing and dyeing is a typical industrial wastewater that is difficult to treat. It has the characteristics of complex components, a large amount of refractory substances, poor biodegradability and high toxicity. At present, most coking plants in China generally use the ordinary activated sludge method to treat the coking wastewater that has been pretreated by distilling ammonia and removing phenols. The removal rate is not high, and the existence of refractory substances makes the effluent water quality not meet the national discharge standards, and further advanced treatment is required. [0003] Iron-carbon micro-electrolysis technology is...

Claims

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Application Information

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IPC IPC(8): C02F1/461
CPCC02F1/461
Inventor 刘达苏刘海兵
Owner 刘达苏
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