Technological method for treating carbolic acid waste water by electrochemical oxidation

An oxidation treatment and electrochemical technology, applied in electrochemical water/sewage treatment, electrode, electrolysis process, etc., can solve the problems of poor electrode stability and low treatment efficiency, and achieve fast reaction rate, high current efficiency and long service life. Effect

Inactive Publication Date: 2008-08-20
YANGZHOU UNIV
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Problems solved by technology

At present, the main problems in the treatment of refractory biodegradable organics by electrocatalytic oxidation are low treatment efficiency and poor electrode stability, both of which are related to the composition, structure and preparation method of electrode materials. Electrochemical Reactor Related

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  • Technological method for treating carbolic acid waste water by electrochemical oxidation
  • Technological method for treating carbolic acid waste water by electrochemical oxidation

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Embodiment Construction

[0016] The titanium substrate was first polished with sandpaper, and then the titanium plate was boiled for a certain period of time with 5% NaOH solution, rinsed with distilled water after taking it out; and then the titanium plate was etched with 10% oxalic acid solution.

[0017] The tin-antimony metal oxide layer is prepared by a thermal decomposition method using a polymeric precursor. At 60°C, add 0.2 mol of citric acid to 1.0 mol of ethylene glycol, and after the citric acid is completely dissolved, add 0.065 mol of SnCl 4 ·5H 2 O and 7.1×10 -3 mol of SbCl 3 , fully stirred and heated to 90° C., and kept at a constant temperature for 30 minutes to prepare a tin-antimony-containing polymer precursor. The precursor was coated on the titanium substrate, kept in an oven at 130°C for 10 minutes, then transferred to a muffle furnace at 500°C for 10 minutes, and repeated 10 times, with the last firing for 30 minutes.

[0018] The concentration of phenol in wastewater is 20...

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Abstract

The invention discloses a process and method of electrolyzing and oxidizing phenol-containing waste water using Ti-base Sn-Sb metal oxide electrode as anode, belonging to water processing field. And the process uses Ti-base Sn-Sb metal oxide electrode as anode and Cu (or stainless steel) as cathode to electrolyze and oxidize the phenol-containing waste water, where the Ti-base Sn-Sb metal oxide anode is made from polymeric precursor by thermolysis. And it can fast degrade the phenol and the degradation intermediate product of the phenol-benzoquinone into aliphatic organic matters to be biochemically processed, thus able to largely raise follow-up biochemical processing efficiency. And it has simple process flow, strong operability, high current efficiency, and stable and reliable processing effect, easy to implement industrialized application.

Description

technical field [0001] The invention relates to waste water treatment technology, in particular to a treatment method for difficult biodegradable phenol-containing waste water, and belongs to the technical field of water treatment. Background technique [0002] With the rapid economic growth, the scope and degree of water pollution are increasing, and water pollution has become an important factor restricting the sustainable development of social economy. At present, the wastewater with simple components and easy biodegradation has been well treated, but there is still a lack of effective treatment methods for wastewater that is difficult to biodegrade. Refractory biodegradable pollutants mainly come from organic compounds discharged from industrial sectors such as pesticides, dyes, coking and coal gas, pharmaceuticals, chemical fibers, textile printing and dyeing, such as: organic chlorides, polychlorinated biphenyls, some dyes, polymers, phenols , polycyclic aromatic hydr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/04C02F1/46
Inventor 王雅琼许文林顾彬
Owner YANGZHOU UNIV
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