Wet process with and without water discharge

The wet process involves gas scrubbing which leads to the saturation temperature and to the absorption of acid gases. Dust and pollutants are collected in the scrubbing water which is then treated and neutralized before being discharged. Heavy metals are precipitated and suspended solids filtered to produce a cake containing stabilized heavy metals and clear water which can be discharged to the environment.

This process gives excellent results, irrespective of the fluctuations or quantity of pollutants entering the system ; the amount of reagent used is close to the stoichiometric ideal.

The quantity of residues to be disposed of is lower than for other processes and additional treatment is relatively simple.

LAB has developed a unique range of unmatched wet gas cleaning systems of modular design, easily adaptable to comply with ever-changing regulations. The systems consist of spray towers combined with filtering and/or electrofiltering venturi modules. They include a number of technological innovations which allow the systems to meet even the most stringent air quality control requirements and remain outstandingly reliable.

Pictures :


Schematic of a wet treatment system



Ivry plant (France)

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