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Preparation method of iron-carbon micro-electrolysis ceramsite filler for water treatment

An iron-carbon micro-electrolysis and water treatment technology, applied in water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of occupying land resources, increasing production costs, and environmental hazards, etc. Achieve the effects of low preparation cost, resource saving and great social benefits

Inactive Publication Date: 2015-10-07
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the extraction and recovery technology of metals in waste printed circuit boards is relatively mature, but the development and utilization of a large number of non-metallic materials remaining after the extraction of metals, that is, waste circuit board powder, is progressing slowly, and there is a large amount of accumulation phenomenon
These non-metallic substances, that is, waste circuit board powder, account for 70% to 80% of the printed circuit board composition. They are mainly composed of inorganic materials such as epoxy resin and glass fiber, and there are also very small amounts of metallic copper and rare trace elements. If it is not developed and utilized, it will occupy land resources and cause harm to the surrounding environment
In addition, in order to improve the catalytic degradation effect of macromolecular organic matter in high-concentration and highly toxic organic wastewater and the reduction effect of heavy metals in heavy metal wastewater, existing fillers often add a small amount of copper and other rare and precious trace elements to the raw materials. The production cost of the filler is greatly increased

Method used

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  • Preparation method of iron-carbon micro-electrolysis ceramsite filler for water treatment
  • Preparation method of iron-carbon micro-electrolysis ceramsite filler for water treatment
  • Preparation method of iron-carbon micro-electrolysis ceramsite filler for water treatment

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Experimental program
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Effect test

Embodiment 1

[0021] Embodiment 1, concrete steps are:

[0022] Step 1) Prepare the mixture: mix scrap iron scraps, waste circuit board powder, river bottom mud powder and clay in the loess cliff section of Xiaofu River, Zibo City, Shandong Province, with a mass ratio of 15:60:10:15 to form a mixture; Among them, scrap iron scraps contain 98% iron, which is ground through a 100-mesh sieve; waste circuit board powder is ground through a 100-mesh sieve after being crushed from waste circuit boards, and then successively undergoes magnetic separation to remove iron and electric separation to remove copper. Waste circuit board powder contains 81% of epoxy resin, 13% of glass fiber and 2.15% of metal copper, and the others are a small amount of iron, aluminum, tin, gold, silver, platinum, etc.; the river bottom mud powder is from Zibo City, Shandong Province The bottom mud of the Huangtuya section of the river is ground and passed through a 120-mesh sieve. The mass percentage of clay in the rive...

Embodiment 2

[0027] Embodiment 2, concrete steps are:

[0028] Step 1) Prepare the mixture: mix scrap iron scraps, waste circuit board powder, river bottom mud powder and clay in the loess cliff section of Xiaofu River, Zibo City, Shandong Province, with a mass ratio of 15:55:15:15 to form a mixture; Others are with embodiment 1.

[0029] Step 2) Add the mixture into the disc granulator, and add 25% binder diluent to granulate the mixture to obtain Spherical particles; the preparation of the binder diluent is as follows: first heat 0.5wt% polyvinyl alcohol until the polyvinyl alcohol melts, and then add 80°C hot water to dilute 6 times to prepare the binder diluent, which is ready-to-use .

[0030] Step 3) The spherical particles are first dried in a drying oven at 100°C, and then calcined in an oxygen-free atmosphere in a box-type atmosphere furnace protected by nitrogen. The calcination system is 0°C to 600°C, and the heating rate is controlled at 10°C / min , when the temperature reac...

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Abstract

The invention provides a preparation method of iron-carbon micro-electrolysis ceramsite filler for water treatment, which is characterized by comprising the following steps: 1, mixing iron scrap, waste circuit board powder, river sediment powder of loess cliff section of Xiaofu river in Zibo city of Shandong province and clay, the mass ratio is (15 to 20) to (55 to 60) to (10 to 15) to (10 to 15), and the mixture is formed; 2, adding the mixture into a granulating disc, additionally adding binder diluent for granulating, and the mass of the binder diluent is 25 to 30 percent, the spheroidal particles with each diameter of Phi 3 to 5 mm are prepared; 3, calcining and cooling under oxygen-free atmosphere after the spheroidal particles are dried, and obtaining the iron-carbon micro-electrolysis ceramsite filler. The iron-carbon micro-electrolysis ceramsite filler is prepared by solid waste such as waste iron scrap and waste circuit board powder as the main raw materials, the resources and energy are saved, using waste to treat waste and energy conservation and emission reduction are realized. The wastewater treatment effect is obviously superior to the existing ceramsite, especially for the iron-carbon micro-electrolysis reduction treatment effect of highly toxic wastewater containing hexavalent chromium; and the iron-carbon micro-electrolysis ceramsite filler is long in service life, simple in maintaining, and easy in utilization of regenerative cycle.

Description

technical field [0001] The invention provides a preparation method of iron-carbon micro-electrolytic ceramsite filler for water treatment, which belongs to the technical field of waste water purification treatment materials and environmental material preparation, especially the purification treatment technical materials of highly toxic waste water and high concentration, refractory biodegradable organic waste water field. Background technique [0002] Ceramic anti-hardening iron-carbon micro-electrolysis ceramsite can use iron-carbon micro-electrolysis technology to treat organic wastewater and heavy metal wastewater with high concentration, high chroma, high toxicity and refractory biodegradation. When the iron-carbon micro-electrolytic ceramsite is immersed in wastewater, due to the potential difference between iron and carbon, countless primary batteries will be formed in the wastewater. These tiny batteries use iron with a low potential as the cathode and carbon with a ...

Claims

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Application Information

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IPC IPC(8): C02F1/461
Inventor 潘嘉芬
Owner SHANDONG UNIV OF TECH
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