Air cleaning
Biowasher
Objective
Control of residual gaseous emissions (polluted air, combustion gases, biogas, etc.) contaminated with NH3, H2S, VOCs, siloxanes, NOx, SO2, particles through systems consisting of two stages: 1. Washer and 2. Biological cultivation for the transformation of absorbed pollutants into non-volatile, harmless or higher added value products
Inlets
Gases with polluting compounds generated in processes of treatment/valuation of agro-industrial waste, droppings, etc. and in livestock activities (breeding sheds, storage of droppings, etc.)
Efficiency
NH3 and H2S removal efficiencies >95%. Lower efficiencies in the elimination of odors and VOCs.
Weaknesses
The possible accumulation of NH3 in the system can inhibit nitrification;
Products
Decontaminated gaseous effluents; Dilute sulfate and nitrate salts
Other outlets
Microbial biomass; biological sulfur
Consumption
Energy: Medium
Water: Medium
Reagents: Medium
Investment
Superior to percolating biofilters since two units are needed to carry out the gas biowashing process (a washer and a biological culture)
Operation
Similar to the operating costs of percolating biofilters
Observations
The main limitation is having a good scrubber design;
Two units are needed to carry out the process of absorption and treatment of the absorbed pollutants;
Two units are needed to carry out the process of absorption and treatment of the absorbed pollutants;
Combination with other technologies
1. Membrane technologies -> Biowasher;
2. Stripping technologies -> Biowasher;
2. Stripping technologies -> Biowasher;
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TRL - 9
Status Consolidated
Complexity Medium
Information made by:
BETA Tech Center