Process for preparing porous catalytic filling for internal electrolysis

A catalytic packing and internal electrolysis technology, which is applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of insufficient treatment capacity of refractory organic wastewater, cumbersome replacement of iron-carbon fillers, Solve the problems of large amount of iron filings and carbon powder, etc., to achieve the effect of saving land occupation and infrastructure costs, improving removal rate, and reducing the amount of iron and carbon

Inactive Publication Date: 2005-01-26
SHANGHAI UNIV +1
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Problems solved by technology

However, there are still some disadvantages in the iron-carbon internal electrolysis process. ①For large-flow and high-concentration wastewater, the addition of iron filings and carbon powder is large, the reactor occupies a large area, and the replacement of iron-carbon fillers is cumbersome; ②For refractory wastewater The treatment capacity of organic wastewater is not high enough, generally only reaches 15-20%

Method used

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Experimental program
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Embodiment 1

[0018] Embodiment one: the composition (percentage by weight) of the porous catalytic packing of the present embodiment is as follows:

[0019] Iron powder 42%, Carbon powder 42%, UHMWPE 12%, Palladium 1.5%, Chromium 1.5%.

[0020] After mixing the above batch materials evenly, add them into the self-designed mold, put the mold into the programmed heating box for program-controlled heating, first raise the temperature to 100°C, and the heating rate is 1°C / min; keep warm for 60min; then rise to 160°C , the heating rate is 5°C / min; then rise to 220°C, the heating rate is 2°C / min; keep warm for 120min, and finally cool naturally. The finished product is obtained after the mold is released. The process takes about 320 minutes, and the temperature difference during the heating process is required to be less than 2%. The finished product is porous, with a shape of 470×430×280 (mm), square holes (aperture 50mm), and vertically staggered distribution.

[0021] The filler is placed i...

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Abstract

The invention relates to a process for preparing porous catalytic filling for internal electrolysis which consists of, adding by proportion multiple component noble metal including palladium, chromium into the conventional electrolyzation filler, press forming in die arrangement, elevating the temperature, obtaining porous inner electrolyzation filler with specific shapes through combustion, wherein porous catalytic material comprises the components (by weight percentage) of iron powder 30-40%, carbon powder 30-40%, super macromolecular polyethylene 10-15%, palladium 1-2.5%, chromium 1-2.5%.

Description

technical field [0001] The invention relates to a method for preparing a porous catalytic packing used in an internal electrolysis process, and belongs to the technical field of preparation process of a special packing material for an internal electrolysis process for wastewater treatment. Background technique [0002] The conventional internal electrolysis method is based on the principle of metal corrosion. Two metals with different electrode potentials, or metals and non-metals are directly immersed in the wastewater solution, and the conductivity of the wastewater is used to form a primary battery to treat the wastewater. . This process was applied to wastewater treatment in the 1970s. Since its birth, it has attracted widespread attention in the United States, the Soviet Union, Japan and other countries, and has achieved some practical results. Our country has started research in this field since the 1980s, and there have been many literature reports. Especially in re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00
Inventor 孙在柏姜星丞段晓东陈德成白明
Owner SHANGHAI UNIV
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