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Composite type micro-electrolysis filler and preparation method thereof

A micro-electrolysis and composite technology, applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of easy passivation, hardening, low mechanical strength, etc., and achieve improved mechanical strength , enhanced efficiency, and high mechanical strength

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The filler is suitable for fluidized bed operation process, overcomes the shortcomings of conventional fillers such as easy passivation, hardening, and low mechanical strength, and the treatment effect is significantly higher than that of iron and carbon phase separation fluidization technology

Method used

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  • Composite type micro-electrolysis filler and preparation method thereof
  • Composite type micro-electrolysis filler and preparation method thereof
  • Composite type micro-electrolysis filler and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Example 1: Mix organic fiber: iron filings: aluminum powder: binder: clay according to the mass ratio (45%): (45%): (5%): (2.5%): (2.5%), and press it into 10nm particles, dry the particles at 80°C, pre-oxidize at 200°C, carbonize at 1000°C for 1-2 hours under the protection of argon, crush the carbonized filler into 40-60 mesh particles, put them in hydrochloric acid to expand the pores, and dry to obtain the composite type Fluidized micro-electrolytic filler. The specific surface area of ​​the prepared filler was measured to be 1.4m 2 / g, the mechanical strength is 1400kg / cm 2 , the density is 1600kg / m 3 .

[0033] The effect of treating printing and dyeing wastewater with the prepared fluidized micro-electrolytic filler is as follows:

[0034] Take a batch of printing and dyeing wastewater from a certain factory area, and measure its water quality indicators: CODcr, BOD 5 . Adjust the pH to 3. After continuous treatment by the micro-electrolysis fluidized bed, ...

Embodiment 2

[0038] Example 2: Mix organic fiber: iron filings: aluminum powder: binder: clay according to the mass ratio (40%): (40%): (10%): (5%): (5%), and press it into 20nm particles, dry the particles at 80°C, pre-oxidize at 200°C, carbonize at 1000°C for 1-2 hours under the protection of argon, crush the carbonized filler into 40-60 mesh particles, put them in hydrochloric acid to expand the pores, and dry to obtain the composite type Fluidized micro-electrolytic filler. The specific surface area of ​​the prepared filler was measured to be 1.3m 2 / g, the mechanical strength is 1500kg / cm 2 , the density is 1400kg / m 3 .

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

[0040] Take a batch of coking wastewater from a certain factory area and measure its water quality indicators: CODcr, BOD 5 , Chroma. Adjust the pH to 3. After continuous treatment by the micro-electrolysis fluidized bed, the hydraulic retention...

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Abstract

The invention provides a composite type micro-electrolysis filler and a preparation method thereof; compared with an ordinary micro-electrolysis filler, the relative density of the filler with an organic fiber as a substrate is reduced because the organic fiber is light in weight after being carbonized, and the relative density of the filler is further reduced because a certain ratio of an aluminum powder is added, so that the filler is strong in fluidization and low in operation energy consumption.

Description

technical field [0001] The invention relates to the field of environmental protection and water pollution control, in particular to a preparation method and application of a micro-electrolytic filler for pretreatment of industrial wastewater or domestic sewage. Background technique [0002] Micro-electrolysis technology uses metal corrosion to form a primary battery, and electrochemically degrades organic matter in wastewater through a series of reactions including corrosion, redox, coagulation, flocculation, and electric field action. The key to micro-electrolysis technology lies in the formation of primary batteries. The fixed-bed micro-electrolysis process is a common reaction type. Various raw materials such as iron filings, coke, and activated carbon are directly mixed and filled to form a fixed bed. However, due to the basic mechanism of the micro-electrolysis reaction and the operating characteristics of the fixed bed itself, the filler layer is prone to passivation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461
CPCC02F1/461
Inventor 王哲明沈树宝王桂林黄勇陈英文罗翔章继龙邱玉韩哓磊郭玉旗
Owner CHINA PETROLEUM & CHEM CORP