Spherical catalytic microelectrolytic environment-friendly material and preparation method therefor
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
An environmentally friendly material, micro-electrolysis technology, applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc.
Inactive Publication Date: 2015-11-25
GUANGZHOU S SUNNY ENVIRONMENTAL PROTECTION TECH CO LTD
View PDF15 Cites 12 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0012] The purpose of the present invention is to provide a spherical catalytic micro-electrolysis environmental protection material and its preparation method, which mainly solves the technical defects in the prior art. Electrolytic environmental protection materials, the catalyst can greatly improve the reaction speed and COD removal rate of micro-electrolysis materials in wastewater, especially in the treatment of various high-concentration and toxic wastewater such as pharmaceutical wastewater, coking wastewater, and petrochemical wastewater. The removal rate is 20-30% higher than that of ordinary iron-carbon micro-electrolytic materials, and at the same time completely solve the problems of passivation, hardening and clogging
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0024] Embodiment 1 130-147 parts of fine iron powder, 25-29 parts of coal, 1-5 parts of catalyst, 1-3 parts of sintering agent
[0025] Example 1 Grind dry iron concentrate (grade 60), coal (grade 5000 cal or more), specially made cerium dioxide, and sodium tetraborate to 200 mesh respectively, and sieve them for later use; weigh the prepared raw materials by weight Mix 130 parts of fine iron powder, 29 parts of coal, 5 parts of catalyst, and 3 parts of sintering agent; granulate the uniformly mixed fine material into small balls with a diameter of 12 to 16 mm, dry and dehydrate, pack into cans, and heat up in a reducing atmosphere Sinter at 1000-1050 degrees Celsius for 4 hours, then cool out of the tank and serve. The product composition is: zero-valent active iron (78wt.%), carbon (14wt.%), catalyst (5wt.%).
Embodiment 2
[0026] Example 2 Grind dry iron concentrate (grade 60), coal (grade 5000 cal or more), specially made cerium dioxide, and sodium tetraborate to 200 mesh respectively, and sieve them for later use; weigh the prepared raw materials by weight Mix 140 parts of fine iron powder, 27 parts of coal, 3 parts of catalyst, and 2 parts of sintering agent; granulate the uniformly mixed fine material into small balls with a diameter of 12 to 16 mm, dry and dehydrate, pack into cans, and heat up in a reducing atmosphere Sinter at 1000-1050 degrees Celsius for 4 hours, then cool out of the tank and serve. The product composition is: zero-valent active iron (84wt.%), carbon (12wt.%), catalyst (3wt.%).
Embodiment 3
[0027] Example 3 Grind dry iron concentrate (grade 60), coal (grade 5000 cal or more), specially made cerium dioxide, and sodium tetraborate to 200 mesh respectively, and sieve them for later use; weigh the prepared raw materials by weight Mix 147 parts of fine iron powder, 25 parts of coal, 1 part of catalyst, and 1 part of sintering agent; granulate the uniformly mixed fine material into small balls with a diameter of 12 to 16 mm, dry and dehydrate, pack into cans, and heat up in a reducing atmosphere Sinter at 1000-1050 degrees Celsius for 4 hours, then cool out of the tank and serve. The product composition is: zero-valent active iron (88wt.%), carbon (10wt.%), catalyst (1wt.%).
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention relates to a spherical catalytic microelectrolytic environment-friendly material and a preparation method therefor. Aiming at the defects such as low reaction speed, low COD (Chemical Oxygen Demand) removal ratio, easiness in passivating and the like of the existing iron-carbon microelectrolytic materials, a special catalyst is added during the production of the spherical catalytic microelectrolytic environment-friendly material disclosed by the invention, the spherical catalytic microelectrolytic environment-friendly material is mainly prepared from 78-88wt.% of zero-valence active iron, 10-14wt.% of carbon, 1-5wt.% of catalyst and 1-3wt.% of auxiliary materials, is an iron, carbon and catalyst integrated composite spherical material and is prepared from fine iron powder, coal, the catalyst and a sintering agent through carrying out grinding and sieving, carrying out mixing and pelletizing, carrying out drying and canning, carrying out high-temperature reduction sintering and carrying out cooling and can discharging, wherein the catalyst is special compounded ceria, and the sintering agent is sodium tetraborate. During the treatment of a variety of high-concentration and toxic wastewater such as pharmaceutical wastewater, coking wastewater, petrochemical wastewater and the like, the reaction speed and COD removal ratio of the spherical catalytic microelectrolytic environment-friendly material are increased by 20-30% through the catalyst compared with those of the ordinary iron-carbon microelectrolytic materials.
Description
technical field [0001] The invention relates to a micro-electrolysis iron-carbon material used for sewage treatment, in particular to a spherical catalytic micro-electrolysis iron-carbon environmental protection material and a preparation method thereof. technical background [0002] In the micro-electrolysis process in sewage treatment, iron filings (or reduced iron particles) are often used as fillers, and the redox (electrochemical corrosion) effect of iron in water is used to remove pollutants in sewage and purify water quality. The basic principle is that iron particles form countless tiny primary batteries in sewage, in which iron is the anode that loses electrons, and coal is added as the cathode to make the cations in the water gain electrons. The electrode process is as follows: [0003] Anode reaction: [0004] Fe-2e→Fe 2+ E. 0 (Fe 2+ / Fe)=-0.44V [0005] Further oxidation of Fe 2+ -e → Fe 3+ [0006] Cathode reaction: [0007] h + +e→H [0008] Further ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/463
Inventor 李小琴
Owner GUANGZHOU S SUNNY ENVIRONMENTAL PROTECTION TECH CO LTD
Login to view more 
Login to view more