Method for degrading phenol through electric flocculation

A phenol and flocculation technology, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problem of low phenol efficiency, achieve the effect of improving removal efficiency, good application prospects, and reducing energy consumption

Inactive Publication Date: 2011-09-07
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Currently, the efficiency of electrokinetic degradation of phenol is low, about 50%

Method used

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  • Method for degrading phenol through electric flocculation
  • Method for degrading phenol through electric flocculation
  • Method for degrading phenol through electric flocculation

Examples

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Embodiment 1

[0034] Electric flocculation to degrade phenol, wherein the electrolysis voltage is 1V, the anode is 12×1cm aluminum plate, the cathode is 12×1cm copper sheet, the electrode distance is 1.5cm, the electrolytic electrode area is 4×1cm, the electrolyte contains 0.2g / L phenol, 0.1 M K 2 SO 4 .

Embodiment 2

[0036] Electric flocculation to degrade phenol, where the electrolysis voltage is 4V, the anode is a 12×1cm aluminum plate, the cathode is a 12×1cm copper sheet, the electrode distance is 1cm, the electrolysis electrode area is 4×1cm, the electrolyte contains 0.2g / L phenol, 0.1M K 2 SO 4 .

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Abstract

The present invention relates to a method for degrading phenol through electric flocculation and the method can effectively increase the removal efficiency of phenol. In the method of electric flocculation, anode is aluminum. The optimal solution is that the electrolyte is K2SO4 solution, the electrode gap is 1-1.5cm, the cathode is copper and the concentration of the electrolyte K2SO4 solution is 0.1M. The further optimal solution is that the anode is a 12*1cm aluminum plate, the cathode is a 12*1cm copper plate and the electrolytic voltage is 2-4V. The invention uses aluminum as anode to perform electric flocculation and degrade phenol, aluminum is dissolved in the electrolytic process at the anode to liberate aluminum ions; at the cathode water is reduced to liberate hydrogen and OH<-> is produced, and a hydrolysis and polymerization reaction is performed by using aluminum ions in the electrolyte so as to generate polyaluminum. The prepared polyaluminum is used as flocculant, the flocculant along with electric degradation of phenol can effectively improve the removal efficiency of phenol in polluted water body; in addition, almost 50% of energy consumption can be saved under the premise of ensuring that the removal efficiency is almost the same.

Description

technical field [0001] The invention relates to a method for degrading phenol by electrodynamic flocculation. Background technique [0002] At present, more than 50% of the groundwater in the world is undrinkable due to various degrees of pollution. my country is a country with a serious shortage of water resources, and the per capita water resources are less than 2200m 3 , and only 1 / 4 of the world's per capita water volume. With the rapid development of my country's economy, most of the large amount of sewage produced is directly discharged into rivers, lakes and reservoirs without treatment, resulting in serious deterioration of water quality and making the situation of insufficient water resources "worse". In my country, in addition to landfills and accidental leakage of toxic substances, urban and industrial sewage discharge, excessive use of pesticides and fertilizers are also important reasons for groundwater pollution. The survey of groundwater pollution in some c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D3/115C02F1/463C02F101/34A62D101/28
Inventor 毕树平章福平徐泉沈东旭宋平三
Owner NANJING UNIV
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