Diethanolamine(DEA) and methyldiethanolamine(MDEA) for activated sludge


Dear all,

In the refinery process, the diethanolamine(DEA) and methyldiethanolamine(MDEA) is use for absorb the H2S or CO2. when the amine is dirty and blow down, the activated sludge in the wastewater treatment plant a good option? the concentration of amine could be 100~1000 ppm. the 100~1000 ppm amine toxic or metabolism for activated sludge ?