Processing of the liquid fraction

Electrooxidation

Electrooxidation

Objective

Oxidation of organic components, metals, etc., in the anode of an electrochemical reactor through the application of an external electric current

Inlets

Water flow from other processes (separation by pressing -> electrocoagulation -> Electrooxidation

Efficiency

Electrooxidation combined with electrocoagulation: Reduction of total nitrogen by 99.9%; Reduction of ammoniacal nitrogen by 99.9%; 99.3% COD reduction

Weaknesses

Potential risk of ammonia emissions due to conversion to organic nitrogen;
Possible formation of chlorinated organic compounds in those indirect oxidation processes, and contamination by added metals;
The presence of colloidal organic matter can produce interference in the oxidation (a previous filtration would be necessary);

Products

Treated water

Other outlets

-

Consumption

Energy: High
Water: Not applicable
Reagents: High

Investment

Not available

Operation

Waste water from mills: €0.22-1.12/kg COD; Minimal Wastewater SL: €1.9/m3 (pork slurry)

Observations

The material used for the anode is important. Mainly, the most typical materials include glassy carbon, Tu/RuO2, Ti/Pt-Ir, carbon fiber, MnO2, Pt-carbon black, porous carbon with stainless steel filter and cross-linked glassy carbon

Combination with other technologies

1. Separation by pressing -> Electrocoagulation -> Electrooxidation;
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TRL - 4
Status Consolidated
Complexity High

Information made by:

BETA Tech Center