Micro-electrolytic filler for realizing the resource utilization of iron mud, preparation method and use thereof

A resourceful, micro-electrolysis technology, applied in chemical instruments and methods, water/sludge/sewage treatment, water pollutants, etc., can solve problems such as micro-electrolysis fillers that have not been found, and achieve improved biodegradability, content removal, The effect of saving drug costs

Inactive Publication Date: 2019-06-07
SHAANXI COAL & CHEM TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, no relevant technology has been found to use iron mud as an iron source to prepare micro-electrolytic fillers

Method used

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  • Micro-electrolytic filler for realizing the resource utilization of iron mud, preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] First mix semi-coke, iron slime and binder evenly according to the proportion, wherein 25 parts of semi-coke, 75 parts of iron mud, 12 parts of binder, 12 parts of binder are composed of 5 parts of bentonite, 5 parts of sodium silicate and A mixture formed by 2 parts of phenolic resin, the materials are mixed evenly and aged for 4 hours; then, the aged materials are mechanically extruded to obtain a green body, and the green body is dried naturally at 120°C for 2 hours; After drying the green body at 1200 °C in N 2 Sintering under the atmosphere for 2 hours, and after cooling, the micro-electrolytic filler that realizes the resource utilization of iron slime can be obtained.

[0035] The effect of treating semi-coke wastewater with the prepared micro-electrolytic filler is as follows:

[0036] The semi-coke wastewater with a COD concentration of 6500mg / L is subjected to micro-electrolysis treatment after acid adjustment. The hydraulic retention time is 6h, the temperat...

Embodiment 2

[0038] First, mix coke, iron slime and binder evenly according to the proportion, including 45 parts of coke, 50 parts of iron slime, and 5 parts of binder, and 5 parts of binder are composed of 3 parts of sodium silicate, 1 part of phenolic resin and 1 The mixture formed by 100% tar was mixed uniformly and aged for 2 hours; then, the aged material was mechanically extruded to form a green body, and the green body was dried naturally at 90°C for 4 hours; the dried The green body is sintered in an Ar atmosphere at 850°C for 6 hours, and after cooling, the micro-electrolytic filler that realizes the recycling of iron slime can be obtained.

[0039] The effect of treating gasification wastewater with the prepared micro-electrolytic filler is as follows:

[0040] The gasification wastewater with a COD concentration of 5000mg / L is treated with micro-electrolysis after acid adjustment. The hydraulic retention time is 4h, the temperature is 40°C, and the COD removal rate reaches 38%....

Embodiment 3

[0042] First, mix the activated carbon, iron slime and binder evenly according to the proportion, including 30 parts of activated carbon, 60 parts of iron slime, 15 parts of binder, and 15 parts of binder are composed of 10 parts of bentonite, 2 parts of phenolic resin and 3 parts of starch The formed mixture was mixed uniformly and aged for 3 hours; then, the aged material was mechanically extruded to form a green body, and the green body was dried naturally at 70°C for 6 hours; the dried green body Water vapor containing N at 1100°C 2 Sintering under the atmosphere for 4 hours, and after cooling, the micro-electrolytic filler that realizes the resource utilization of iron slime can be obtained.

[0043] The effect of treating coking wastewater with the prepared micro-electrolytic filler is as follows:

[0044] The coking wastewater with a COD concentration of 3500mg / L was treated by micro-electrolysis after acid adjustment. The hydraulic retention time was 3h, the temperatu...

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Abstract

The invention relates to the technical field of waste water treatment, in particular to a micro-electrolytic filler for realizing the resource utilization of iron mud, a preparation method and a use thereof. The micro-electrolytic filler comprises the following raw materials in parts by weight: 25-45 parts of carbon, 50-80 parts of iron and 5-15 parts of binder, wherein that iron is from iron mud.When the micro-electrolytic filler of the invention is prepared, carbon, iron and binder are uniformly mixed according to the proportion and aged; then the obtained mixture is made into a green body,and the green body is dried; and then the dried green body is sintered at 600-1200 DEG C for 2-8 hours under the oxygen-free condition, and after cooling, the micro-electrolytic filler for realizingthe resource utilization of the iron mud is obtained. The microelectrolytic filler of the present invention can be used for treating organic wastewater. The invention aims at the iron mud generated inthe process of production and waste water treatment, and utilizes the principle of carbothermal reduction to carry out the resource utilization of the iron mud.

Description

technical field [0001] The invention relates to the technical field of waste water treatment, in particular to a micro-electrolytic filler for realizing resource utilization of iron slime, a preparation method and application thereof. Background technique [0002] As an important wastewater treatment technology, the iron-carbon micro-electrolysis process has been successfully applied in wastewater treatment fields such as coal chemical industry, printing and dyeing, electroplating, pharmaceuticals, papermaking, and petroleum refining. Among all the process influencing factors, the filler is the core part of the iron-carbon micro-electrolysis treatment process, which has a direct impact on the effect and efficiency of the iron-carbon micro-electrolysis treatment process. At present, most of the iron used in iron-carbon micro-electrolytic fillers is iron filings, steel slag and other elemental iron. As a substitute for iron resources, iron slime can be utilized as a resource ...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F101/30
Inventor 李克伦张生军田士东张红星谭晓婷王奕晨杜秉霖岳婷婷
Owner SHAANXI COAL & CHEM TECH INST
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