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Method for degrading antibiotic-containing wastewater by using geopolymer particle three-dimensional electrode

A geopolymer and antibiotic wastewater technology, which is applied in special compound water treatment, chemical instruments and methods, water pollutants, etc., can solve problems such as low utilization rate, secondary pollution, and low treatment efficiency

Pending Publication Date: 2021-05-18
黑晶科技(嘉兴)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention introduces geopolymer as a three-dimensional electrode of geopolymer particles, on the one hand, it can effectively solve the problems of low treatment efficiency and secondary pollution in traditional physical, chemical and biological methods, and provides a new idea for utilizing geopolymer; On the other hand, the ferrous ions provided by the geopolymer particle three-dimensional electrode can synergistically activate PS and produce a large amount of OH and SO 4 - , realize SO by electrolysis 4 2- to S 2 o 8 2- Regeneration and Fe 2+ / Fe 3+ Recycling of electron pairs, solving Fe 2+ / S 2 o 8 2- Fe in the system 2+ Low utilization rate, easy to produce iron sludge and SO in the reaction residual liquid 4 2- Excessively cause secondary pollution and other problems, effectively degrade antibiotic wastewater

Method used

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  • Method for degrading antibiotic-containing wastewater by using geopolymer particle three-dimensional electrode
  • Method for degrading antibiotic-containing wastewater by using geopolymer particle three-dimensional electrode
  • Method for degrading antibiotic-containing wastewater by using geopolymer particle three-dimensional electrode

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preparation example Construction

[0067] The present invention also provides a method for preparing a geopolymer particle three-dimensional electrode, comprising the following steps:

[0068] 1) mixing sodium hydroxide, sodium silicate and water to prepare an alkaline activator, and pre-mixing pretreated steel slag and fly ash;

[0069] 2) Add the alkaline activator, steel slag and fly ash to the cement slurry mixer and stir for 1±0.5min to form a slurry, then pour the slurry into a mold and vibrate on a vibrating table 1±0.5min;

[0070] 3) Place the vibrated mold in a curing box at 60±2°C for 10±2 hours, and then place it under normal temperature for curing for more than 7 days to obtain a geopolymer;

[0071] 4) The geopolymer is first crushed by a hammer, then crushed into particles, and sieved to obtain a geopolymer particle three-dimensional electrode with a required particle size.

[0072] Preferably, in step 1), the mass ratio of the steel slag, fly ash, sodium hydroxide, sodium silicate and water is...

Embodiment 1

[0083] A preparation method of a geopolymer particle three-dimensional electrode for degrading antibiotic wastewater in this embodiment, exploring the influence of an alkaline activator on degrading antibiotic wastewater, includes the following steps:

[0084] First, steel slag and fly ash are crushed and ground, and then passed through a 200-mesh sieve to obtain pretreated raw materials. Secondly, change the consumption of alkaline activator, steel slag 75g, fly ash 75g, water 18g, and three groups of sodium hydroxide, sodium silicate (modulus 1.3) (respectively 6g, 36g, 7g, 42g, 8g , 48g) mix. Next, add the mixed slurry of the alkaline activator, steel slag and fly ash powder into the cement paste mixer and stir for one minute to form a slurry, then pour the slurry into the mold, and Vibrate for 1 min, and put the vibrated mold in a curing oven at 60°C for 10 h. Finally, the prepared geopolymer is crushed into particles and sieved to obtain a three-dimensional electrode of...

Embodiment 2

[0087] A preparation method of a geopolymer particle three-dimensional electrode for degrading antibiotic wastewater according to this embodiment is to explore the influence of the raw material ratio of the geopolymer particle three-dimensional electrode on the degradation of antibiotic wastewater, including the following steps:

[0088] First, steel slag and fly ash are crushed and ground, and then passed through a 200-mesh sieve to obtain pretreated raw materials. Secondly, change the ratio of steel slag and fly ash, sodium hydroxide 6g, sodium silicate (modulus 1.3) 36g, water 18g and four groups of different steel slag, fly ash ratio (respectively 100g, 50g, 50g, 100g , 30g, 120g, 75g, 75g) mixed. Next, add the mixed slurry of the alkaline activator, steel slag and fly ash powder into the cement paste mixer and stir for one minute to form a slurry, then pour the slurry into the mold, and Vibrate for 1 min, and put the vibrated mold in a curing oven at 60°C for 10 h. Fina...

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Abstract

The invention discloses a method for degrading antibiotic-containing wastewater by using a geopolymer particle three-dimensional electrode. The method comprises the following steps of: injecting antibiotic-containing wastewater into a three-dimensional electrochemical device containing a geopolymer particle three-dimensional electrode, and electrifying to carry out degradation treatment, wherein the three-dimensional electrochemical device comprises a direct-current power supply, a cathode, an anode, a geopolymer particle three-dimensional electrode, a rotor and an electrolytic cell. According to the invention, the problems of low utilization rate of Fe<2+> in a Fe<2+> / S2O8<2-> system, easy generation of iron sludge, secondary pollution caused by excessive SO4<2-> in reaction residual liquid and the like are solved, and a more economic and effective degradation scheme is provided while the antibiotic wastewater is effectively degraded; and a new way is provided for application of the geopolymer, can be carried out at ambient temperature, and the method is simple and convenient to operate and lower in energy consumption.

Description

technical field [0001] The invention relates to the technical field of solid waste recycling and antibiotic wastewater degradation, in particular to a method for degrading antibiotic-containing wastewater by using a three-dimensional electrode of geopolymer particles. Background technique [0002] In recent decades, antibiotic compounds have been widely used in the prevention and treatment of bacterial infections and related diseases, and some products are also used in the animal breeding industry as growth promoters. Sulfonamide antibiotics have become one of the most widely used antibiotics in my country because of their broad-spectrum antibacterial properties, low cost, and high stability. Antibiotic residues in sewage will produce resistance genes and antibiotic-resistant bacteria, leading to antibiotic resistance problems, and a large amount of antibiotics are excreted from human and animal bodies into the natural environment in an active state, destroying the self-puri...

Claims

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Application Information

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IPC IPC(8): C02F9/06C02F1/461C02F1/72C04B28/00C04B12/00C04B111/94C02F101/30C02F101/34C02F101/38
CPCC02F1/46114C02F1/725C02F1/72C04B28/006C04B12/005C02F2001/46133C02F2101/30C02F2101/34C02F2101/38C02F2101/40C02F2201/461C02F2305/023C04B2111/94C04B22/062C04B12/04C04B18/142C04B18/08Y02P40/10
Inventor 张玲玲黄长猛
Owner 黑晶科技(嘉兴)有限公司
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