Processing of the liquid fraction
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);
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;
Download the file here
TRL - 4
Status Consolidated
Complexity High
Information made by:
BETA Tech Center