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Electro-catalytic oxidation material for wastewater treatment, preparation method and application

A technology for electrocatalytic oxidation and wastewater treatment, applied in water/sewage treatment, chemical instruments and methods, oxidized water/sewage treatment, etc. High productivity, fast mold release and good ventilation

Active Publication Date: 2013-08-28
深圳市地大东江环境研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above organic industrial wastewater is characterized by many types of pollutants, high toxicity, high COD value, strong acidity and alkalinity, and most of them are biodegradable pollutants, which are very harmful to the ecological environment and human health.
If biochemical methods or other individual treatment technologies are used to treat such wastewater, it is not only economically uneconomical, but also difficult to achieve good treatment results

Method used

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  • Electro-catalytic oxidation material for wastewater treatment, preparation method and application
  • Electro-catalytic oxidation material for wastewater treatment, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] a. Ingredients: 30 kg of iron powder with a particle size of 250-400 mesh, 2 kg of alumina with a particle size of ≤100 nm, 2 kg of nickel oxide with a particle size of ≤100 nm, 4 kg of titanium oxide with a particle size of ≤100 nm, and aluminum silicate 4 kg, water glass 5 kg, activated carbon powder 30 kg, polyvinyl alcohol 3 kg, graphite powder 20 kg;

[0046] b. Grind 30kg of activated carbon powder and 20kg of graphite powder and pass through a 250-300 mesh screen;

[0047] c. Mix 30 kg of activated carbon powder, 20 kg of graphite powder, 30 kg of iron powder, 2 kg of aluminum oxide, 2 kg of nickel oxide, 4 kg of titanium oxide, and 4 kg of aluminum silicate in the reaction kettle, and then add water glass 5kg, 3kg of polyvinyl alcohol and a certain amount of water, adjusted to a thick substance with a moisture content of 10-20%;

[0048] d. The thick material obtained in step c is granulated into granules by a granulator or pressed into a block or disc in a mol...

Embodiment 2

[0050] a. Ingredients: 60 kg of iron powder with a particle size of 250-400 mesh, 1 kg of alumina with a particle size of ≤100 nm, 1 kg of nickel oxide with a particle size of ≤100 nm, 2 kg of titanium oxide with a particle size of ≤100 nm, and aluminum silicate 2 kg, water glass 3 kg, activated carbon powder 20 kg, polyvinyl alcohol 1 kg, graphite powder 10 kg;

[0051] b. Grind 20kg of activated carbon powder and 10kg of graphite powder and pass through a 250-300 mesh screen;

[0052] c. Put 20kg of milled activated carbon powder, 10kg of graphite powder, 60kg of iron powder, 1kg of aluminum oxide, 1kg of nickel oxide, 2kg of titanium oxide, and 2kg of aluminum silicate into the reaction kettle and mix well, then add 3kg of water glass, poly Vinyl alcohol 1kg and a certain amount of water, adjusted to a thick substance with a moisture content of 10-20%;

[0053] d. The thick material obtained in step c is granulated into granules by a granulator or pressed into a block or d...

Embodiment 3

[0055] a. Ingredients: 45 kg of iron powder with a particle size of 250-400 mesh, 1.5 kg of alumina with a particle size of ≤100 nm, 1.5 kg of nickel oxide with a particle size of ≤100 nm, 3 kg of titanium oxide with a particle size of ≤100 nm, silicon Acid aluminum 3kg, water glass 4kg, activated carbon powder 30kg, polyvinyl alcohol 2kg, graphite powder 10kg;

[0056] b. Grind 30kg of activated carbon powder and 10kg of graphite powder and pass through a 250-300 mesh screen;

[0057] c. Put 30kg of milled activated carbon powder, 10 kg of graphite powder, 45kg of iron powder, 1.5kg of aluminum oxide, 1.5kg of nickel oxide, 3kg of titanium oxide, and 3kg of aluminum silicate into the reaction kettle and mix well, then add water 4kg of glass, 2kg of polyvinyl alcohol and a certain amount of water, adjusted to a thick substance with a moisture content of 10-20%;

[0058] d. Use the granulator to granulate the thick product obtained in step c to form granules or press it into a...

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Abstract

The invention discloses an electro-catalytic oxidation material for wastewater treatment. The material comprises 30 to 60 percent of iron powder, 1 to 2 percent of aluminum oxide, 1 to 2 percent of nickel oxide, 2 to 4 percent of titanium oxide, 2 to 4 percent of aluminum silicate, 3 to 5 percent of water glass, 20 to 30 percent of active carbon powder, 1 to 3 percent of polyvinyl alcohol, and 10to 20 percent of graphite powder. The material is prepared by the following steps of: adding water into raw materials to form a thick material, pressing the thick material into granules, blocks or discs through a forming machine, demoulding, drying in an oven, and calcining in a high-temperature furnace to obtain a porous carbon electrode material of which the yield reaches 95 percent. The porouscarbon electrode material is put into a reactor; the pH value of the wastewater is regulated and aeration is performed when the water is added, and Fenton reaction is produced when hydrogen peroxide is added for cooperative work; in high-concentration organic wastewater treatment indexes of nano-filtration (NF) or reverse osmosis (RO) membrane concentrate of purified garbage leachate and the like, good technical effects on chemical oxygen demand (COD), ammonia nitrogen concentration and chromaticity are achieved; and the aim of discharging the industrial wastewater with standards is fulfilled.

Description

technical field [0001] The invention relates to the field of new materials, in particular to an electrocatalytic oxidation material capable of purifying and treating difficult-to-biochemical wastewater, electroplating wastewater, concentrated liquid produced by nanofiltration or RO membrane, printing and dyeing wastewater, and its preparation method and application. Background technique [0002] With the rapid development of social economy, the industrialization and urbanization of human society are increasing day by day, and the phenomenon of water pollution is becoming more and more serious. The waste water produced by the chemical industry alone reaches tens of billions of tons every year. Among them, the waste water from the production of dyes, medicines and intermediates has become a recognized problem in the world because of its high concentration, high toxicity and difficulty in degrading. How to improve treatment efficiency and reduce investment is very critical for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461C02F1/72C02F1/78
Inventor 彭云龙刘娟陈兆勇何双连刘宪武曾新玲
Owner 深圳市地大东江环境研究院
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