Processing of the solid fraction
Wet oxidation
Objective
Oxidation of dissolved and suspended organic components using oxygen at high temperatures and under pressure. The objective is to eliminate organic compounds that are too diluted to apply incineration or too concentrated to undergo biological treatment
Inlets
Municipal solid waste, slurry from different types of livestock activity (pigs, cattle and poultry), sludge from waste water treatment plants, products from other processes such as anaerobic digestion
Efficiency
COD removal 75-90%; Conversion of organic nitrogen to ammoniacal nitrogen 78-86%.
Weaknesses
Potential risk of gaseous emissions (NOx, SOx, H2S, HCl, dioxins, etc.), although lower than with other oxidative processes due to the liquid condition of the environment;
Products
Carbon dioxide and water
Other outlets
Short-chain carboxylic acids and ammonium (in the case of nitrogenous waste), sulfates (in the case of waste with a high sulfur content)
Consumption
Energy: High
Water: No data
Reagents: Medium
Investment
Not available
Operation
Not available
Observations
-
Combination with other technologies
1. Wet oxidation -> Anaerobic digestion (for other co-substrates other than manure);
2. Anaerobic digestion -> Wet oxidation
2. Anaerobic digestion -> Wet oxidation
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TRL - 4
Status Consolidated
Complexity High
Information made by:
BETA Tech Center