Micro-electrolysis filling material and preparation method thereof

A micro-electrolysis, raw material technology, applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of easy passivation and hardening, high investment cost per ton of water, and inability to use micro-electrolysis for a long time Filling and other issues, to achieve the effect of facilitating shipment, reducing specific gravity, and stable treatment effect

Active Publication Date: 2012-07-11
SHANGHAI EMPEROR OF CLEANING HI TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects that the existing micro-electrolytic fillers are easy to passivate and harden during use, and cannot be used for a long time, so the micro-electrolytic fillers need to be replaced frequently, which leads to high investment costs per ton of water. A novel micro-electrolytic filler and its preparation method

Method used

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  • Micro-electrolysis filling material and preparation method thereof
  • Micro-electrolysis filling material and preparation method thereof
  • Micro-electrolysis filling material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Get iron scraps and dry them at 200°C for 1 hour and then cool them through a 200-mesh sieve. Raw materials: scrap iron scraps 68%, activated carbon 22% and aluminum oxide 10% are mixed in cans (percentages are percentages of raw material mass), Enter the high-temperature furnace for reduction, heat up for 4 hours to 1080°C under anaerobic conditions, keep warm for 10 hours, cool down for 8 hours, and then come out of the furnace. After crushing, pass through a 200-mesh sieve to obtain micro-electrolytic fillers. Among them, iron content is 64%, activated carbon is 22%, alumina is 10%, and the balance is impurities. Performance indicators of micro-electrolytic filler: specific gravity: 0.9 tons / cubic meter, specific surface area: 1.2 square meters / gram, porosity: 52%, physical strength 1550Kg / cm 2 .

Embodiment 2

[0028] Take scrap iron scraps and dry them at 180°C for 1.5 hours, then cool them through a 200-mesh sieve, mix 70% scrap iron scraps, 21% activated carbon, and 9% sodium tetraborate into cans (the percentage is the percentage of the raw material mass), and enter Reduction in a high-temperature furnace, heating up to 1080°C for 4 hours under anaerobic conditions, holding the temperature for 10 hours, cooling down for 8 hours, cooling out of the furnace, crushing and passing through a 200-mesh sieve to obtain micro-electrolytic fillers. Wherein the iron content is 70%, activated carbon is 21%, sodium tetraborate is 8%, and the balance is impurities. Performance indicators of micro-electrolytic filler: specific gravity: 0.99 tons / cubic meter, specific surface area: 1.1 square meters / gram, porosity: 51%, physical strength: 1600Kg / cm 2 .

Embodiment 3

[0030] Take scrap iron chips and dry them at 180°C for 1.5 hours, then cool them through a 200-mesh sieve, and mix the raw materials: 60% scrap iron chips, 30% activated carbon and 10% silicon dioxide (the percentage is the percentage of the raw material mass) , enter the high temperature furnace for reduction, raise the temperature for 3 hours to 1180°C for 9 hours, keep the temperature for 9 hours, cool down for 10 hours, and then come out of the furnace. After crushing, pass through a 200-mesh sieve to obtain micro-electrolytic fillers. Wherein the content of iron is 59%, activated carbon is 30%, silicon dioxide is 10%, and the balance is impurities. Performance indicators of micro-electrolytic filler: specific gravity: 0.8 tons / cubic meter, specific surface area: 1.25 square meters / gram, porosity: 56%, physical strength: 1510Kg / cm 2 .

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Abstract

The invention discloses a preparation method of a micro-electrolysis filling material. The method comprises the steps of mixing the raw materials including scrap iron, activated carbon and dispersant, calcinating the mixture at the temperature ranging from 1080 DEG C to 1180 DEG C and under oxygen-free conditions; cooling, crushing and screening, wherein the consumed scrap iron accounts for 60 to 70% of the total mass of the raw material, the consumed activated carbon accounts for 20 to 30% of the total mass of the raw material, and the consumed dispersant accounts for 5 to 10% of the total mass of the raw material. The micro-electrolysis filling material has remarkable effects on removing wastewater COD (Chemical Oxygen Demand) and lowering the chromaticness, can improve the biodegradability of wastewater well, avoids inactivation and hardening during treatment process, and is stable and effective during long-term operation, so that the reaction rate is high and only 30 to 60 minutes is required to treat industrial wastewater; the micro-electrolysis filling material is relatively lower in iron content, so that the specific weight is greatly reduced and convenience is provided for load, transportation and use; the application range of the activated carbon is expanded, so that convenience is provided for purchase and production; and a wide variety of dispersants can be used in the method and can be adjusted according to different kinds of wastewater, thereby having a better treatment effect on all kinds of wastewater.

Description

technical field [0001] The invention relates to a micro-electrolytic filler and a preparation method thereof. Background technique [0002] Micro-electrolysis technology is currently an ideal process for treating high-concentration organic wastewater, also known as internal electrolysis. It uses the micro-electrolytic material filled in the wastewater to generate a 1.2V potential difference to electrolyze the wastewater to degrade organic pollutants without electricity. When the system is filled with water, countless micro-battery systems will be formed in the device, forming an electric field in its action space. The new ecological [H], Fe produced during the process 2+ It can undergo oxidation-reduction reactions with many components in wastewater, such as chromophoric groups or auxochromic groups that can destroy colored substances in colored wastewater, and even break chains to achieve degradation and decolorization; the generated Fe 2+ further oxidized to Fe 3+ , th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461
Inventor 王炜
Owner SHANGHAI EMPEROR OF CLEANING HI TECH
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